WorldWideScience

Sample records for cultured bluefin tuna

  1. Trophic impact of Atlantic bluefin tuna migrations in the North Sea

    DEFF Research Database (Denmark)

    Mariani, Patrizio; Andersen, Ken Haste; Lindegren, Martin

    2017-01-01

    and the stability of the fish community. The impact of a migrating top-predator is investigated here for Atlantic bluefin tuna in the North Sea. Bluefin tuna has been absent from the region for half-century, but recent years have seen recovery of migrations and a return of bluefin tuna in the area. We use a size...

  2. Mercury in fish products: what's the best for consumers between bluefin tuna and yellowfin tuna?

    Science.gov (United States)

    Cammilleri, Gaetano; Vazzana, Mirella; Arizza, Vincenzo; Giunta, Francesca; Vella, Antonio; Lo Dico, Gianluigi; Giaccone, Vita; Giofrè, Salvatore V; Giangrosso, Giuseppe; Cicero, Nicola; Ferrantelli, Vincenzo

    2018-02-01

    A total of 205 bluefin and yellowfin tuna samples were examined for mercury detection in order to verify possible differences and have a detailed risk assessment of the two tuna species. The results showed significant higher mercury concentration in muscle tissue of bluefin tuna respect yellowfin tuna (p < 0.001) with mean concentration of 0.84 mg/kg and maximum value of 1.94 mg/kg. These differences can be due the different biological and ecological aspects of the two tuna species and to different oceanographic aspects between Atlantic Ocean and Mediterranean sea. The results obtained in this study suggest an advisable containment of the sources of pollution and further studies on the closed-loop farming of bluefin tuna, in order to ensure the product safety.

  3. Modelling retention and dispersion mechanisms of bluefin tuna eggs and larvae in the northwest Mediterranean Sea

    Science.gov (United States)

    Mariani, Patrizio; MacKenzie, Brian R.; Iudicone, Daniele; Bozec, Alexandra

    2010-07-01

    Knowledge of early life history of most fish species in the Mediterranean Sea is sparse and processes affecting their recruitment are poorly understood. This is particularly true for bluefin tuna, Thunnus thynnus, even though this species is one of the world’s most valued fish species. Here we develop, apply and validate an individually based coupled biological-physical oceanographic model of fish early life history in the Mediterranean Sea. We first validate the general structure of the coupled model with a 12-day Lagrangian drift study of anchovy ( Engraulis encrasicolus) larvae in the Catalan Sea. The model reproduced the drift and growth of anchovy larvae as they drifted along the Catalan coast and yielded similar patterns as those observed in the field. We then applied the model to investigate transport and retention processes affecting the spatial distribution of bluefin tuna eggs and larvae during 1999-2003, and we compared modelled distributions with available field data collected in 2001 and 2003. Modelled and field distributions generally coincided and were patchy at mesoscales (10s-100s km); larvae were most abundant in eddies and along frontal zones. We also identified probable locations of spawning bluefin tuna using hydrographic backtracking procedures; these locations were situated in a major salinity frontal zone and coincided with distributions of an electronically tagged bluefin tuna and commercial bluefin tuna fishing vessels. Moreover, we hypothesized that mesoscale processes are responsible for the aggregation and dispersion mechanisms in the area and showed that these processes were significantly correlated to atmospheric forcing processes over the NW Mediterranean Sea. Interannual variations in average summer air temperature can reduce the intensity of ocean mesoscale processes in the Balearic area and thus potentially affect bluefin tuna larvae. These modelling approaches can increase understanding of bluefin tuna recruitment processes and

  4. Modelling retention and dispersion mechanisms of bluefin tuna eggs and larvae in the Northwest Mediterranean Sea

    DEFF Research Database (Denmark)

    Mariani, Patrizio; MacKenzie, Brian; Iudicone, D.

    2010-01-01

    Knowledge of early life history of most fish species in the Mediterranean Sea is sparse and processes affecting their recruitment are poorly understood. This is particularly true for bluefin tuna, Thunnus thynnus, even though this species is one of the world's most valued fish species. Here we...... develop, apply and validate an individually based coupled biological-physical oceanographic model of fish early life history in the Mediterranean Sea. We first validate the general structure of the coupled model with a 12-day Lagrangian drift study of anchovy (Engraulis encrasicolus) larvae in the Catalan...... mesoscale processes in the Balearic area and thus potentially affect bluefin tuna larvae. These modelling approaches can increase understanding of bluefin tuna recruitment processes and eventually contribute to management of bluefin tuna fisheries....

  5. Evolutionary changes of multiple visual pigment genes in the complete genome of Pacific bluefin tuna.

    Science.gov (United States)

    Nakamura, Yoji; Mori, Kazuki; Saitoh, Kenji; Oshima, Kenshiro; Mekuchi, Miyuki; Sugaya, Takuma; Shigenobu, Yuya; Ojima, Nobuhiko; Muta, Shigeru; Fujiwara, Atushi; Yasuike, Motoshige; Oohara, Ichiro; Hirakawa, Hideki; Chowdhury, Vishwajit Sur; Kobayashi, Takanori; Nakajima, Kazuhiro; Sano, Motohiko; Wada, Tokio; Tashiro, Kosuke; Ikeo, Kazuho; Hattori, Masahira; Kuhara, Satoru; Gojobori, Takashi; Inouye, Kiyoshi

    2013-07-02

    Tunas are migratory fishes in offshore habitats and top predators with unique features. Despite their ecological importance and high market values, the open-ocean lifestyle of tuna, in which effective sensing systems such as color vision are required for capture of prey, has been poorly understood. To elucidate the genetic and evolutionary basis of optic adaptation of tuna, we determined the genome sequence of the Pacific bluefin tuna (Thunnus orientalis), using next-generation sequencing technology. A total of 26,433 protein-coding genes were predicted from 16,802 assembled scaffolds. From these, we identified five common fish visual pigment genes: red-sensitive (middle/long-wavelength sensitive; M/LWS), UV-sensitive (short-wavelength sensitive 1; SWS1), blue-sensitive (SWS2), rhodopsin (RH1), and green-sensitive (RH2) opsin genes. Sequence comparison revealed that tuna's RH1 gene has an amino acid substitution that causes a short-wave shift in the absorption spectrum (i.e., blue shift). Pacific bluefin tuna has at least five RH2 paralogs, the most among studied fishes; four of the proteins encoded may be tuned to blue light at the amino acid level. Moreover, phylogenetic analysis suggested that gene conversions have occurred in each of the SWS2 and RH2 loci in a short period. Thus, Pacific bluefin tuna has undergone evolutionary changes in three genes (RH1, RH2, and SWS2), which may have contributed to detecting blue-green contrast and measuring the distance to prey in the blue-pelagic ocean. These findings provide basic information on behavioral traits of predatory fish and, thereby, could help to improve the technology to culture such fish in captivity for resource management.

  6. A full lifecycle bioenergetic model for bluefin tuna.

    Directory of Open Access Journals (Sweden)

    Marko Jusup

    Full Text Available We formulated a full lifecycle bioenergetic model for bluefin tuna relying on the principles of Dynamic Energy Budget theory. Traditional bioenergetic models in fish research deduce energy input and utilization from observed growth and reproduction. In contrast, our model predicts growth and reproduction from food availability and temperature in the environment. We calibrated the model to emulate physiological characteristics of Pacific bluefin tuna (Thunnus orientalis, hereafter PBT, a species which has received considerable scientific attention due to its high economic value. Computer simulations suggest that (i the main cause of different growth rates between cultivated and wild PBT is the difference in average body temperature of approximately 6.5°C, (ii a well-fed PBT individual can spawn an average number of 9 batches per spawning season, (iii food abundance experienced by wild PBT is rather constant and sufficiently high to provide energy for yearly reproductive cycle, (iv energy in reserve is exceptionally small, causing the weight-length relationship of cultivated and wild PBT to be practically indistinguishable and suggesting that these fish are poorly equipped to deal with starvation, (v accelerated growth rate of PBT larvae is connected to morphological changes prior to metamorphosis, while (vi deceleration of growth rate in the early juvenile stage is related to efficiency of internal heat production. Based on these results, we discuss a number of physiological and ecological traits of PBT, including the reasons for high Feed Conversion Ratio recorded in bluefin tuna aquaculture.

  7. Spawning of bluefin tuna in the black sea: historical evidence, environmental constraints and population plasticity

    DEFF Research Database (Denmark)

    Mackenzie, Brian R; Mariani, Patrizio

    2012-01-01

    The lucrative and highly migratory Atlantic bluefin tuna, Thunnus thynnus (Linnaeus 1758; Scombridae), used to be distributed widely throughout the north Atlantic Ocean, Mediterranean Sea and Black Sea. Its migrations have supported sustainable fisheries and impacted local cultures since antiquity...

  8. A full lifecycle bioenergetic model for bluefin tuna.

    NARCIS (Netherlands)

    Jusup, M.; Klanjscek, T.; Matsuda, H.; Kooijman, S.A.L.M.

    2011-01-01

    We formulated a full lifecycle bioenergetic model for bluefin tuna relying on the principles of Dynamic Energy Budget theory. Traditional bioenergetic models in fish research deduce energy input and utilization from observed growth and reproduction. In contrast, our model predicts growth and

  9. Polychlorinated biphenyls and organochlorine pesticides as intrinsic tracer tags of foraging grounds of bluefin tuna in the northwest Atlantic Ocean

    International Nuclear Information System (INIS)

    Deshpande, Ashok D.; Dickhut, Rebecca M.; Dockum, Bruce W.; Brill, Richard W.; Farrington, Cameron

    2016-01-01

    Researchers have utilized chemical fingerprints in the determination of habitat utilization and movements of the aquatic animals. In the present effort, we analyzed polychlorinated biphenyl (PCB) congeners and organochlorine pesticides in the samples of juvenile bluefin tuna caught offshore of Virginia, and in larger bluefin tuna from the Gulf of Maine and near Nova Scotia. For a given specimen, or a given location, PCB concentrations were highest, followed by DDTs, and chlordanes. Average contaminant concentrations from fish captured from the three locations were not significantly different; and PCBs, DDTs, and chlordanes correlated well with each other. Trans-nonachlor/PCB 153 ratios in bluefin tuna of eastern Atlantic (i.e., Mediterranean) origin are low compared to the corresponding ratios in fish in the western Atlantic. As the former migrate to the western Atlantic, these ratios gradually turnover due to the accumulation of biomass from forage contaminated with higher trans-nonachlor/PCB 153 ratio reflecting dissimilar use of chlordane pesticides on two sides of the Atlantic Ocean. The trans-nonachlor/PCB 153 ratio indicated that one juvenile bluefin tuna from offshore of Virginia and one large bluefin tuna from Gulf of Maine in the present study originated from foraging grounds in the Mediterranean Sea, and that they have made the trans-Atlantic migrations. The remaining individuals were determined to be either spawned in the Gulf of Mexico or the trans-nonachlor/PCB 153 ratio for the putative Mediterranean bluefin tuna was completely turned over to resemble the ratio characteristic to the western Atlantic. Based on the turnover time for trans-nonachlor/PCB 153 ratio previously determined, the residence time of juvenile bluefin tuna offshore Virginia was estimated to be at least 0.8 to 1.6 years. A discriminant function analysis (DFA) plot of total PCB normalized signatures of PCB congeners showed three separate clusters, which suggested that bluefin tuna

  10. Characterization of the Boundary Layer on Full-Scale Bluefin Tuna

    Science.gov (United States)

    Amaral, Brian; Cipolla, Kimberly; Henoch, Charles

    2014-11-01

    The physics that enable tuna to cross large expanses of ocean while feeding and avoiding predators is not presently understood, and could involve complex control of turbulent boundary layer transition and drag reduction. Typical swimming speeds of Bluefin tuna are 1-2 m/s, but can be higher during strong accelerations. The goal of this work is to experimentally determine the approximate lateral location at which transition to turbulence occurs on the tuna for various speeds. The question is whether laminar flow or an advanced propulsion mechanism (or both) allows them to swim at high speeds. Uncertainties include the surface roughness of the skin, local favorable and adverse pressure gradients, and discontinuities such as the open mouth or juncture at the fins. Historically, much of the fluid mechanics work in the area of fish locomotion has focused on vortex shedding issues rather than the boundary layer. Here, the focus is obtaining information on the boundary layer characteristics of a rigid tuna model. A full scale model of a Pacific Bluefin tuna was fabricated using a mold made from an actual deceased tuna, preserving the surface features and details of the appendages. The model was instrumented with 32 wall pressure sensors and experiments performed in a tow tank. Results from flow visualization, drag and wall pressure measurements over a range of speeds and varying angles of attack will be presented.

  11. Canned bluefin tuna, an in vitro cardioprotective functional food potentially safer than commercial fish oil based pharmaceutical formulations.

    Science.gov (United States)

    Tenore, Gian Carlo; Calabrese, Giorgio; Ritieni, Alberto; Campiglia, Pietro; Giannetti, Daniela; Novellino, Ettore

    2014-09-01

    Commercial canned fish species typical in the Italian market were evaluated for their lipid profile. Bluefin tuna samples showed the highest content in omega-3 fatty acids (n-3 PUFA) among the canned fish samples analyzed. Tests on H9C2 cardiomyocytes revealed that bluefin tuna n-3 PUFA may responsible for a significant cell protection against both physiological and doxorubicin-induced oxidative stress. Analogous tests performed by incubating cardiac cells with n-3 PUFA ethyl esters, of which most of fish oil pharmaceutical formulations (FOPF) are based, showed cytotoxicity at high doses. Our results highlighted that n-3 PUFA contents in a 50 g canned bluefin tuna portion would be almost equivalent to and potentially safer than those of 1 FOPF capsule (1000 mg)/die usually suggested for hyperlipidaemic subjects. Thus, Italian commercial canned bluefin tuna could be indicated as a functional food with potential health benefits for the prevention and care of cardiovascular disorders. Copyright © 2014 Elsevier Ltd. All rights reserved.

  12. Polychlorinated biphenyls and organochlorine pesticides as intrinsic tracer tags of foraging grounds of bluefin tuna in the northwest Atlantic Ocean.

    Science.gov (United States)

    Deshpande, Ashok D; Dickhut, Rebecca M; Dockum, Bruce W; Brill, Richard W; Farrington, Cameron

    2016-04-15

    Researchers have utilized chemical fingerprints in the determination of habitat utilization and movements of the aquatic animals. In the present effort, we analyzed polychlorinated biphenyl (PCB) congeners and organochlorine pesticides in the samples of juvenile bluefin tuna caught offshore of Virginia, and in larger bluefin tuna from the Gulf of Maine and near Nova Scotia. For a given specimen, or a given location, PCB concentrations were highest, followed by DDTs, and chlordanes. Average contaminant concentrations from fish captured from the three locations were not significantly different; and PCBs, DDTs, and chlordanes correlated well with each other. Trans-nonachlor/PCB 153 ratios in bluefin tuna of eastern Atlantic (i.e., Mediterranean) origin are low compared to the corresponding ratios in fish in the western Atlantic. As the former migrate to the western Atlantic, these ratios gradually turnover due to the accumulation of biomass from forage contaminated with higher trans-nonachlor/PCB 153 ratio reflecting dissimilar use of chlordane pesticides on two sides of the Atlantic Ocean. The trans-nonachlor/PCB 153 ratio indicated that one juvenile bluefin tuna from offshore of Virginia and one large bluefin tuna from Gulf of Maine in the present study originated from foraging grounds in the Mediterranean Sea, and that they have made the trans-Atlantic migrations. The remaining individuals were determined to be either spawned in the Gulf of Mexico or the trans-nonachlor/PCB 153 ratio for the putative Mediterranean bluefin tuna was completely turned over to resemble the ratio characteristic to the western Atlantic. Based on the turnover time for trans-nonachlor/PCB 153 ratio previously determined, the residence time of juvenile bluefin tuna offshore Virginia was estimated to be at least 0.8 to 1.6years. A discriminant function analysis (DFA) plot of total PCB normalized signatures of PCB congeners showed three separate clusters, which suggested that bluefin tuna

  13. Atlantic Bluefin Tuna (Thunnus thynnus) Biometrics and Condition.

    Science.gov (United States)

    Rodriguez-Marin, Enrique; Ortiz, Mauricio; Ortiz de Urbina, José María; Quelle, Pablo; Walter, John; Abid, Noureddine; Addis, Piero; Alot, Enrique; Andrushchenko, Irene; Deguara, Simeon; Di Natale, Antonio; Gatt, Mark; Golet, Walter; Karakulak, Saadet; Kimoto, Ai; Macias, David; Saber, Samar; Santos, Miguel Neves; Zarrad, Rafik

    2015-01-01

    The compiled data for this study represents the first Atlantic and Mediterranean-wide effort to pool all available biometric data for Atlantic bluefin tuna (Thunnus thynnus) with the collaboration of many countries and scientific groups. Biometric relationships were based on an extensive sampling (over 140,000 fish sampled), covering most of the fishing areas for this species in the North Atlantic Ocean and Mediterranean Sea. Sensitivity analyses were carried out to evaluate the representativeness of sampling and explore the most adequate procedure to fit the weight-length relationship (WLR). The selected model for the WLRs by stock included standardized data series (common measurement types) weighted by the inverse variability. There was little difference between annual stock-specific round weight-straight fork length relationships, with an overall difference of 6% in weight. The predicted weight by month was estimated as an additional component in the exponent of the weight-length function. The analyses of monthly variations of fish condition by stock, maturity state and geographic area reflect annual cycles of spawning and feeding behavior. We update and improve upon the biometric relationships for bluefin currently used by the International Commission for the Conservation of Atlantic Tunas, by incorporating substantially larger datasets than ever previously compiled, providing complete documentation of sources and employing robust statistical fitting. WLRs and other conversion factors estimated in this study differ from the ones used in previous bluefin stock assessments.

  14. Bluefin tuna fishing and ranching: a difficult management problem

    NARCIS (Netherlands)

    Stefano, de V.; Heijden, van der P.G.M.

    2007-01-01

    The fish processing industry and consumers in Japan are willing to pay high (and sometimes outrageous) prices for fresh bluefin tuna with fat content and flesh colour just right to be served raw as sashimi or sushi. This willingness was and still is the economic incentive for a high fishing pressure

  15. 75 FR 33531 - Atlantic Highly Migratory Species; Atlantic Bluefin Tuna Fisheries

    Science.gov (United States)

    2010-06-14

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration 50 CFR Part 635 RIN 0648-XW79 Atlantic Highly Migratory Species; Atlantic Bluefin Tuna Fisheries AGENCY: National Marine..., recent Large Pelagics Survey estimates indicate that charter/headboat BFT landings constitute...

  16. Trace elements in the kidney tissue of Bluefin Tuna ( Thunnus ...

    African Journals Online (AJOL)

    Trace elements, namely lead (Pb), copper (Cu), manganese (Mn), nickel (Ni), zinc (Zn), and iron (Fe), found in kidney tissues were analyzed and compared between wild/fattened and female/male bluefin tuna (BFT) in the Eastern Mediterranean region of Turkey. One hundred (that is, 50 female and 50 male) individual ...

  17. 77 FR 21015 - Atlantic Highly Migratory Species; Atlantic Bluefin Tuna Fisheries

    Science.gov (United States)

    2012-04-09

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration 50 CFR Part 635 [Docket No. 110210132-1275-02] RIN 0648-XB116 Atlantic Highly Migratory Species; Atlantic Bluefin Tuna Fisheries AGENCY... to their ability to attract customers. In addition, 2011 Large Pelagics Survey estimates indicate...

  18. 76 FR 18416 - Atlantic Highly Migratory Species; Atlantic Bluefin Tuna Fisheries

    Science.gov (United States)

    2011-04-04

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration 50 CFR Part 635 [Docket No. 100317152-0176-01] RIN 0648-XA327 Atlantic Highly Migratory Species; Atlantic Bluefin Tuna Fisheries AGENCY... ability to attract customers. In addition, recent Large Pelagics Survey estimates indicate that charter...

  19. Evolutionary changes of multiple visual pigment genes in the complete genome of Pacific bluefin tuna

    OpenAIRE

    Nakamura, Yoji; Mori, Kazuki; Saitoh, Kenji; Oshima, Kenshiro; Mekuchi, Miyuki; Sugaya, Takuma; Shigenobu, Yuya; Ojima, Nobuhiko; Muta, Shigeru; Fujiwara, Atushi; Yasuike, Motoshige; Oohara, Ichiro; Hirakawa, Hideki; Chowdhury, Vishwajit Sur; Kobayashi, Takanori

    2013-01-01

    Tunas are migratory fishes in offshore habitats and top predators with unique features. Despite their ecological importance and high market values, the open-ocean lifestyle of tuna, in which effective sensing systems such as color vision are required for capture of prey, has been poorly understood. To elucidate the genetic and evolutionary basis of optic adaptation of tuna, we determined the genome sequence of the Pacific bluefin tuna (Thunnus orientalis), using next-generation sequencing tec...

  20. 78 FR 20258 - Atlantic Highly Migratory Species; Atlantic Bluefin Tuna Fisheries

    Science.gov (United States)

    2013-04-04

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration 50 CFR Part 635 [Docket No. 120306154-2241-02] RIN 0648-XC593 Atlantic Highly Migratory Species; Atlantic Bluefin Tuna Fisheries AGENCY... retention limit is vital to their ability to attract customers. In addition, 2012 Large Pelagics Survey...

  1. The imprint of anthropogenic CO2 emissions on Atlantic bluefin tuna otoliths

    Science.gov (United States)

    Fraile, Igaratza; Arrizabalaga, Haritz; Groeneveld, Jeroen; Kölling, Martin; Santos, Miguel Neves; Macías, David; Addis, Piero; Dettman, David L.; Karakulak, Saadet; Deguara, Simeon; Rooker, Jay R.

    2016-06-01

    Otoliths of Atlantic bluefin tuna (Thunnus thynnus) collected from the Mediterranean Sea and North Atlantic Ocean were analyzed to evaluate changes in the seawater isotopic composition over time. We report an annual otolith δ13C record that documents the magnitude of the δ13C depletion in the Mediterranean Sea between 1989 and 2010. Atlantic bluefin tuna in our sample (n = 632) ranged from 1 to 22 years, and otolith material corresponding to the first year of life (back-calculated birth year) was used to reconstruct seawater isotopic composition. Otolith δ18O remained relatively stable between 1989 and 2010, whereas a statistically significant decrease in δ13C was detected across the time interval investigated, with a rate of decline of 0.05‰ yr- 1 (- 0.94‰ depletion throughout the recorded period). The depletion in otolith δ13C over time was associated with the oceanic uptake of anthropogenically derived CO2.

  2. First data on growth and nucleic acid and protein content of field-captured Mediterranean bluefin (Thunnus thynnus and albacore (Thunnus alalunga tuna larvae: a comparative study

    Directory of Open Access Journals (Sweden)

    Alberto García

    2006-10-01

    Full Text Available The waters surrounding the Balearic archipelago are considered to be prime spawning habitats of the bluefin tuna (Thunnus thynnus and other tuna species such as albacore (T. alalunga in the Mediterranean. During the 2003 bluefin and albacore spawning season, a tuna larval survey (TUNIBAL 0703 was carried out to assess the distribution of bluefin larvae in relation to hydrographic mesoscale features. Tuna larvae were collected by means of surface plankton tows with a bongo gear with a quadrangular mouth measuring 1 m diagonally. The otolith microstructure of 157 and 71 field-captured larvae of Mediterranean bluefin and albacore, respectively, were analyzed to estimate the daily growth pattern. Furthermore, biochemical analysis to estimate DNA, RNA and protein content was done on another batch of 114 bluefin and 132 albacore larvae. The size range included pre-flexion to post-flexion larvae, from 2.8 to 8.6 mm in body length. bluefin and albacore larvae grew linearly in standard length (0.35 and 0.33 mm/day, respectively and potentially with respect to dry weight. No significant differences between species were observed in the size-weight relationship, or in the allometric relationship of body size and weight to otolith radius. However, the relationship of DNA and RNA to body size and weight showed a significant difference between species. Bluefin tuna larvae showed a greater nucleic acid content than albacore larvae. Protein content showed no significant differences with respect to body length.

  3. Levels of dioxin (PCDD/F) and PCBs in a random sample of Australian aquaculture-produced Southern Bluefin Tuna (Thunnus maccoyii)

    Energy Technology Data Exchange (ETDEWEB)

    Padula, D.; Madigan, T.; Kiermeier, A.; Daughtry, B.; Pointon, A. [South Australian Research and Development Inst. (Australia)

    2004-09-15

    To date there has been no published information available on the levels of dioxin (PCDD/F) and PCBs in Australian aquaculture-produced Southern Bluefin Tuna (Thunnus maccoyii). Southern Bluefin Tuna are commercially farmed off the coast of Port Lincoln in the state of South Australia, Australia. This paper reports the levels of dioxin (PCDD/F) and PCBs in muscle tissue samples from 11 randomly sampled aquaculture-produced Southern Bluefin Tuna collected in 2003. Little published data exists on the levels of dioxin (PCDD/F) and PCBs in Australian aquacultureproduced seafood. Wild tuna are first caught in the Great Australian Bight in South Australian waters, and are then brought back to Port Lincoln where they are ranched in sea-cages before being harvested and exported to Japan. The aim of the study was to identify pathways whereby contaminants such as dioxin (PCDD/F) and PCBs may enter the aquaculture production system. This involved undertaking a through chain analysis of the levels of dioxin (PCDD/F) and PCBs in wild caught tuna, seafloor sediment samples from the marine environment, levels in feeds and final harvested exported product. Detailed study was also undertaken on the variation of dioxin (PCDD/F) and PCBs across individual tuna carcases. This paper addresses the levels found in final harvested product. Details on levels found in other studies will be published elsewhere shortly.

  4. First attempt to assess the viability of bluefin tuna spawning events in offshore cages located in an a priori favourable larval habitat

    Directory of Open Access Journals (Sweden)

    Patricia Reglero

    2013-10-01

    Full Text Available Most of the Atlantic bluefin tuna caught by the purse-seine fleet in the Mediterranean Sea are transferred alive into transport cages and towed to coastal facilities where they are fattened. This major fishery is targeting aggregations of reproductive bluefin tuna that continue spawning within the transport cages. Our study is the first attempt to assess the viability of the spawning events within transport cages placed offshore in a priori favourable locations for larval survival. The study was conducted in June 2010 in the Balearic Sea, a main spawning area for bluefin tuna in the Mediterranean. The location of two transport cages, one with wild and one with captive tuna, coincide with the situation of the chlorophyll front using satellite imagery as a proxy for the salinity front between resident surface waters and those of recent Atlantic origin. The results showed that bluefin tuna eggs were spawned almost every day within the two cages but few or no larvae were found. The expected larval densities estimated after applying mortality curves to the daily egg densities observed in the cages were higher than the sampled larval densities. The trajectories of the eggs after hatching estimated from a particle tracking model based on observed geostrophic currents and a drifter deployed adjacent to the cage suggest that larvae were likely to be caught close to the cages within the sampling dates. Spawning events in captive tuna in transport cages may hatch into larvae though they may experience higher mortality rates than expected in natural populations. The causes of the larval mortality are further discussed in the text. Such studies should be repeated in other spawning areas in the Mediterranean if spawning in cages located offshore in areas favourable a priori for larval survival is likely to be considered a management measurement to minimize the impact of purse-seine fishing on tuna.

  5. A reconstructed database of historic bluefin tuna captures in the Gibraltar Strait and Western Mediterranean

    Directory of Open Access Journals (Sweden)

    Josué M. Polanco-Martínez

    2018-02-01

    Full Text Available This data paper presents a reconstruction of a compilation of a small but consistent database of historical capture records of bluefin tuna (Thunnus thynnus; BFT hereafter from the Gibraltar Strait and Western Mediterranean (Portugal, Spain and Italy. The compilation come from diverse historical and documentary sources and span the time interval from 1525 to 1936 covering a period of 412 years. There is a total of 3074 datum, which reach up to 67.83% of the total implying a 32.17% of missing data. However, we have only reconstructed the captures for the time interval 1700–1936 and we provide these reconstructions only for this time interval and for 9 out of 11 series due to the scarcity and inhomogeneity of the two oldest capture time series. This reconstructed database provides an invaluable opportunity for fisheries and marine research as well as for multidisciplinary research in climate change. Keywords: Data reconstructions, DINEOF, Missing data, Historic Bluefin tuna captures, Gibraltar Strait and Western Mediterranean

  6. Preliminary approach on early post mortem stress and quality indexes changes in large size bluefin tuna (Thunnus thynnus

    Directory of Open Access Journals (Sweden)

    R. Ugolini

    2010-01-01

    Full Text Available Bluefin tuna (Thunnus thynnus is very appreciated on Japan and USA market for the preparation of sushi and sahimi. The market price of the fresh product can vary from 8 to 33 Euro/kg (gate farm/producers prices according to size, shape, fat level, meat colour, consistency and freshness (absence of “hyake”, all parameters strictly connected to feeding quality and quantity, rearing and killing stress factors and refrigeration times and conditions after death. Excessive levels of stress during the slaughtering can affect meat quality, contributing to significantly decrease of tuna’s price. The present trial was carried out to evaluate the possible harvesting/slaughtering stress effect on reared bluefin tuna meat quality, starting from the examination of the most important stress and quality parameters changes during the early post mortem period.

  7. A cascade of warming impacts brings bluefin tuna to Greenland waters

    DEFF Research Database (Denmark)

    MacKenzie, Brian; Payne, Mark; Boje, Jesper

    Rising ocean temperatures are causing marine fish species to shift spatial distributions and ranges, and are altering predator-prey dynamics in food-webs. Most documented cases of species shifts so far involve relatively small species at lower trophic levels, and consider individual species...... since 1985, when temperatures began to rise. The presence of bluefin tuna in this region is likely due to a combination of warm temperatures that are physiologically more tolerable and immigration of an important prey species into the region. We conclude that a cascade of climate change impacts...

  8. Keterpaduan Pasar Tuna Segar Benoa/Bali, Indonesia Dan Pasar Sentral Tuna Tokyo, Jepang

    OpenAIRE

    SITORUS, EDYANTO

    2007-01-01

    Tuna fish is which forming life and horde in tropical territorial water until subtropics. Tuna type which important in commerce is Yellowfin, Bigeye, Poor Southern Bluefin, Northern Bluefin, Albacore and of Skipjack (Cakalang). Objective of this research is analyze integrity of market that happened between local market (Market of Benoa, Bali) with reference market (Tuna Central Market of Tokyo, Japan), It is seen from the research that in Benoa there are 3 system of selling fresh tu...

  9. Global habitat preferences of commercially valuable tuna

    KAUST Repository

    Arrizabalaga, Haritz; Dufour, Florence; Kell, Laurence T.; Merino, Gorka; Ibaibarriaga, Leire; Chust, Guillem; Irigoien, Xabier; Santiago, Josu; Murua, Hilario; Fraile, Igaratza; Chifflet, Marina; Goikoetxea, Nerea; Sagarminaga, Yolanda; Aumont, Olivier; Bopp, Laurent; Herrera, Miguel Angel; Marc Fromentin, Jean; Bonhomeau, Sylvain

    2015-01-01

    In spite of its pivotal role in future implementations of the Ecosystem Approach to Fisheries Management, current knowledge about tuna habitat preferences remains fragmented and heterogeneous, because it relies mainly on regional or local studies that have used a variety of approaches making them difficult to combine. Therefore in this study we analyse data from six tuna species in the Pacific, Atlantic and Indian Oceans in order to provide a global, comparative perspective of habitat preferences. These data are longline catch per unit effort from 1958 to 2007 for albacore, Atlantic bluefin, southern bluefin, bigeye, yellowfin and skipjack tunas. Both quotient analysis and Generalised Additive Models were used to determine habitat preference with respect to eight biotic and abiotic variables. Results confirmed that, compared to temperate tunas, tropical tunas prefer warm, anoxic, stratified waters. Atlantic and southern bluefin tuna prefer higher concentrations of chlorophyll than the rest. The two species also tolerate most extreme sea surface height anomalies and highest mixed layer depths. In general, Atlantic bluefin tuna tolerates the widest range of environmental conditions. An assessment of the most important variables determining fish habitat is also provided. © 2014 Elsevier Ltd.

  10. Global habitat preferences of commercially valuable tuna

    KAUST Repository

    Arrizabalaga, Haritz

    2015-03-01

    In spite of its pivotal role in future implementations of the Ecosystem Approach to Fisheries Management, current knowledge about tuna habitat preferences remains fragmented and heterogeneous, because it relies mainly on regional or local studies that have used a variety of approaches making them difficult to combine. Therefore in this study we analyse data from six tuna species in the Pacific, Atlantic and Indian Oceans in order to provide a global, comparative perspective of habitat preferences. These data are longline catch per unit effort from 1958 to 2007 for albacore, Atlantic bluefin, southern bluefin, bigeye, yellowfin and skipjack tunas. Both quotient analysis and Generalised Additive Models were used to determine habitat preference with respect to eight biotic and abiotic variables. Results confirmed that, compared to temperate tunas, tropical tunas prefer warm, anoxic, stratified waters. Atlantic and southern bluefin tuna prefer higher concentrations of chlorophyll than the rest. The two species also tolerate most extreme sea surface height anomalies and highest mixed layer depths. In general, Atlantic bluefin tuna tolerates the widest range of environmental conditions. An assessment of the most important variables determining fish habitat is also provided. © 2014 Elsevier Ltd.

  11. Trade-Based Estimation of Bluefin Tuna Catches in the Eastern Atlantic and Mediterranean, 2005–2011

    Science.gov (United States)

    Gagern, Antonius; van den Bergh, Jeroen; Sumaila, Ussif Rashid

    2013-01-01

    The Eastern Atlantic and Mediterranean stock of Bluefin tuna Thunnus thynnus (BFTE) has long been considered overfished and at risk of collapse. Although ICCAT quotas for this stock have decreased considerably over the past years, uncertainty exists about the degree of catch beyond this quota. The extent of such catch is an important piece of information in stock assessment models as well as being an indicator of the effectiveness of fisheries management. We present a model using Bluefin tuna trade data to infer actual catches. Basing our calculations on 25 countries involved in BFTE trade, we estimate that between 2005 and 2011, allowable quotas were exceeded by 44 percent. This gap between catch and quotas has slightly increased over past years, leading to estimated excess catches of 57 percent for the period between 2008 and 2011. To improve assessments, preparation and design of BFTE management, we suggest that the estimated total removals reported in this paper be included in stock assessment models for BFTE. An implication of our findings is that ICCAT member states should take stronger measures to monitor and enforce compliance with quotas. PMID:23922870

  12. Molecular and morphological identification of Cardicola (Trematoda: Aporocotylidae) eggs in hatchery-reared and migratory Atlantic bluefin tuna (Thunnus thynnus L.)

    Czech Academy of Sciences Publication Activity Database

    Forte-Gil, D.; Holzer, Astrid S.; Pecková, Hana; Bartošová-Sojková, Pavla; Peñalver, J.; Dolores, E.M.; Muñoz, P.

    2016-01-01

    Roč. 450, JAN 1 (2016), s. 58-66 ISSN 0044-8486 R&D Projects: GA ČR GBP505/12/G112 Institutional support: RVO:60077344 Keywords : Aquaculture * Atlantic bluefin tuna * Blood fluke * Cardicola * Migration * Thunnus thynnus Subject RIV: EG - Zoology Impact factor: 2.570, year: 2016

  13. Relative growth pattern and hard tissue of vertebral centra by microradiography of bluefin tuna

    International Nuclear Information System (INIS)

    Kubo, Y.; Asano, H.

    1989-01-01

    To clarify the growth feature and the structure of hard tissue, we studied the vertebral centrum of three species, bluefin tuna Thunnus thynnus, bigeye tuna T. obesus and skipjack Katsuwonus pelamis (BL: 44.2, 39.5 and 40.0cm respectively). We examined the ratio of cetrum length to diameter in each vertebral centrum and obtained the value of 0.9-1.3 in most centra among three species. This indicates that the examined species belong to the equivalent type of the relative growth pattern of vertebral centra. The hard tissue was observed by microradiography, with the longitudinal and cross sections (about 100 μm) cut through the center of notochordal pore. The major centra of the vertebral column were composed of characteristic simple structure like a cross, when seen in the microradiographs of cross sections. Microradiographs indicated that the bone has complicated canals with minute spaces like the bone cavities

  14. A Satellite Imagery, Ecosystem-Based GIS Study of Bluefin Tuna and Right Whale Distribution and Movements in the Gulf of Marine and NW Atlantic

    National Research Council Canada - National Science Library

    Lutcavage, Molly

    2002-01-01

    The goals of this research were to develop a GIS workstation to examine the distribution, relative abundance, and behavior of Atlantic bluefin tuna and the Northern right whale in relation to their environment and prey...

  15. Discovering where bluefin tuna, Thunnus thynnus, might go: using environmental and fishery data to map potential tuna habitat in the eastern Mediterranean Sea

    OpenAIRE

    Dimitrios Damalas; Persefoni Megalofonou

    2012-01-01

    Based on a dataset derived from commercial fisheries in the eastern Mediterranean Sea in 1998-2005, we applied generalized additive models (GAMs) to investigate the relative influence of a range of environmental factors on catch rates of Atlantic bluefin tuna (Thunnus thynnus Linnaeus, 1785). GAM analyses were conducted by separately modelling (1) the probability of making a catch (encountering a school), and (2) the positive catch rates (school size). Results suggested intra-annual variation...

  16. Developmental stages of fish blood flukes, Cardicola forsteri and Cardicola opisthorchis (Trematoda: Aporocotylidae), in their polychaete intermediate hosts collected at Pacific bluefin tuna culture sites in Japan.

    Science.gov (United States)

    Ogawa, Kazuo; Shirakashi, Sho; Tani, Kazuki; Shin, Sang Phil; Ishimaru, Katsuya; Honryo, Tomoki; Sugihara, Yukitaka; Uchida, Hiro'omi

    2017-02-01

    Farming of Pacific bluefin tuna (PBT), Thunnus orientalis, is a rapidly growing industry in Japan. Aporocotylid blood flukes of the genus Cardicola comprising C. orientalis, C. opisthorchis and C. forsteri are parasites of economic importance for PBT farming. Recently, terebellid polychaetes have been identified as the intermediate hosts for all these parasites. We collected infected polychaetes, Terebella sp., the intermediate host of C. opisthorchis, from ropes and floats attached to tuna cages in Tsushima, Nagasaki Prefecture, Japan. Also, Neoamphitrite vigintipes (formerly as Amphitrite sp. sensu Shirakashi et al., 2016), the intermediate host of C. forsteri, were collected from culture cages in Kushimoto, Wakayama Prefecture, Japan. The terebellid intermediate hosts harbored the sporocysts and cercariae in their body cavity. Developmental stages of these blood flukes were molecularly identified using species specific PCR primers. In this paper, we describe the cercaria and sporocyst stages of C. opisthorchis and C. forsteri and compare their morphological characteristics among three Cardicola blood flukes infecting PBT. We also discuss phylogenetic relations of the six genera of the terebellid intermediate hosts (Artacama, Lanassa, Longicarpus, Terebella, Nicolea and Neoamphitrite) of blood flukes infecting marine fishes, based on their morphological characters. Copyright © 2016 Elsevier Ireland Ltd. All rights reserved.

  17. The development of the northern European fishery for north Atlantic bluefin tuna Thunnus thynnus during 1900-1950

    DEFF Research Database (Denmark)

    MacKenzie, Brian; Myers, R.A.

    2007-01-01

    North Atlantic bluefin tuna, Thunnus thynnus, used to migrate to northern European waters (Norwegian Sea, North Sea, Skagerrak, Kattegat, and Øresund) where it supported important commercial and sportfisheries. The species disappeared from the region in the early 1960s and the species is now still...... increasing. The species was frequently sighted while fishermen were targeting other species (herring, mackerel) and occasionally was caught as bycatch with these and other species. Information from scientifically trained observers demonstrate that tuna schools were common in the North Sea for 2–3 months...... during the summers of 1923–1931. As fishermen realized that the species had market value, new catch methods were developed and employed. These included harpoon-rifle, improved hook and line methods, and hydraulically operated purse seines. Landings rose sharply as did the number of vessels...

  18. Depressed resilience of bluefin tuna in the western atlantic and age truncation.

    Science.gov (United States)

    Secor, D H; Rooker, J R; Gahagan, B I; Siskey, M R; Wingate, R W

    2015-04-01

    Following intense overfishing in the 1970s, the western stock of Atlantic bluefin tuna (Thunnus thynnus) experienced a long period of depressed abundance, which has been attributed to failure of the population to periodically produce large numbers of juveniles, the western stock mixing with the more highly exploited eastern stock (fisheries in the Northeast Atlantic Ocean and Mediterranean Sea), and regime shift in the population's ecosystem resulting in lower replacement rates. To evaluate the presence of relatively strong years of juvenile production, we analyzed age structure from a recent sample of otoliths (ear stones) collected from the western stock (2011-2013, North Carolina, U.S.A., winter fishery). Mixing levels for the recent sample were analyzed using otolith stable isotopes to test whether age structure might be biased through immigration of eastern stock bluefin tuna. Age structure from historical samples collected from United States and Canadian fisheries (1975-1981) was compared with more recent samples (1996-2007) to examine whether demographic changes had occurred to the western stock that might have disrupted juvenile production. Relatively high juvenile production occurred in 2003, 2005, and 2006. Otolith stable isotope analysis showed that these recruitments were mostly of western stock origin. However, these high recruitments were >2-fold less than historical recruitment. We found substantial age truncation in the sampled fisheries. Half the historical sample was >20 years old (mean age = 20.1 [SD 3.7]; skewness = -0.3), whereas 20 years old (mean age = 13.4 [SD 3.8]; skewness = 1.3). Loss of age structure is consistent with changes in fishing selectivity and trends in the stock assessment used for management. We propose that fishing, as a forcing variable, brought about a threshold shift in the western stock toward lower biomass and production, a shift that emulates the regime shift hypothesis. An abbreviated reproductive life span

  19. 77 FR 73969 - International Fisheries; Pacific Tuna Fisheries; Fishing Restrictions in the Eastern Pacific Ocean

    Science.gov (United States)

    2012-12-12

    ... overfishing of the stock. DATES: Comments must be submitted in writing by January 11, 2013. A public hearing... effort quotas are an important step for reducing the overfishing of bluefin tuna. In 2011, NMFS determined overfishing is occurring on Pacific bluefin tuna based on stock assessment results of the...

  20. Tuna Species Substitution in the Spanish Commercial Chain: A Knock-On Effect.

    Directory of Open Access Journals (Sweden)

    Ana Gordoa

    Full Text Available Intentional mislabelling of seafood is a widespread problem, particularly with high-value species like tuna. In this study we examine tuna mislabelling, deliberate species substitution, types of substitution and its impact on prices. The survey covered the commercial chain, from Merca-Barna to fishmongers and restaurants in the Spanish Autonomous Community of Catalonia. To understand the geographic extent of the problem we also sampled Merca-Madrid, Europe's biggest fish market, and Merca-Málaga for its proximity to the bluefin tuna migratory route and trap fishery. Monthly surveys were carried out over one year. The results showed a high deficiency in labelling: 75% of points of sale and 83% of restaurants did not specify the species, and in those cases the name of the species had to be asked. A total of 375 samples were analysed genetically, the largest dataset gathered in Europe so far. The identified species were Thunnus albacares, Thunnus thynnus and Thunnus obesus. Species substitution began at suppliers, with 40% of observed cases, increasing to 58% at fishmongers and 62% at restaurants. The substitution was mainly on bluefin tuna (T. thynnus, 73% of cases. At restaurants, only during the bluefin fishing season, we observed a decrease of Bluefin tuna substitution and an increase of reverse substitution revealing some illegal fishing. The effect of species substitution on species prices was relevant: T. obesus increased its price by around €12 kg-1 when it was sold as bluefin. In view of the deficiency of labelling, the abuse of generic names and the lack of the bluefin catch document, we conclude that the Spanish regulations are ineffective, highlighting the need for policy execution, and the urgent need for information campaigns to Spanish consumers.

  1. Muscular system in the pacific bluefin tuna Thunnus orientalis (Teleostei: Scombridae).

    Science.gov (United States)

    Nakae, Masanori; Sasaki, Kunio; Shinohara, Gento; Okada, Tokihiko; Matsuura, Keiichi

    2014-02-01

    The muscular system in the Pacific bluefin tuna Thunnus orientalis is studied in detail. For the first time, a complete description of the muscular anatomy of a thunnid is provided here. Eighty-two elements including subdivisions of components of the muscular system are identified. This is less than found in a basal perciform and two other investigated scombrid species, owing mainly to the absence or fusion of pectoral, pelvic and caudal fin muscles. The absence of elements of the basal perciform pattern was most prominent in the caudal fin, which includes only the flexor dorsalis, flexor ventralis, hypochordal longitudinalis, and interradialis. In the caudal fin, the medial fan-shaped ray was identified as the first dorsal ray, judging from myological and neuroanatomical characters. The highly developed gill filament muscles in Thunnus orientalis and sheet-like rectus communis control gill ventilation. Long body muscle tendons reduce the metabolic energy needed during rapid and continuous swimming. These characters are interpreted as adaptations in the context of the oceanic life style of the species. Copyright © 2013 Wiley Periodicals, Inc.

  2. Brain morphology and immunohistochemical localization of the gonadotropin-releasing hormone in the bluefin tuna, Thunnus thynnus

    Directory of Open Access Journals (Sweden)

    G Palmieri

    2009-08-01

    Full Text Available The present study was focused on the morphology of the diencephalic nuclei (likely involved in reproductive functions as well as on the distribution of GnRH (gonadotropin-releasing hormone in the rhinencephalon, telencephalon and the diencephalon of the brain of bluefin tuna (Thunnus thynnus by means of immunohistochemistry. Bluefin tuna has an encephalization quotient (QE similar to that of other large pelagic fish. Its brain exhibits well-developed optic tecta and corpus cerebelli. The diencephalic neuron cell bodies involved in reproductive functions are grouped in two main nuclei: the nucleus preopticus-periventricularis and the nucleus lateralis tuberis. The nucleus preopticus-periventricularis consists of the nucleus periventricularis and the nucleus preopticus consisting of a few sparse multipolar neurons in the rostral part and numerous cells closely packed and arranged in several layers in its aboral part. The nucleus lateralis tuberis is located in the ventral-lateral area of the diencephalon and is made up of a number of large multipolar neurones. Four different polyclonal primary antibodies against salmon (sGnRH, chicken (cGnRH-II (cGnRH-II 675, cGnRH-II 6 and sea bream (sbGnRH were employed in the immunohistochemical experiments. No immunoreactive structures were found with anti sbGnRH serum. sGnRH and cGnRH-II antisera revealed immunoreactivity in the perikarya of the olfactory bulbs, preopticus-periventricular nucleus, oculomotor nucleus and midbrain tegmentum. The nucleus lateralis tuberis showed immunostaining only with anti-sGnRH serum. Nerve fibres immunoreactive to cGnRH and sGnRH sera were found in the olfactory bulbs, olfactory nerve and neurohypophysis. The significance of the distribution of the GnRHimmunoreactive neuronal structures is discussed.

  3. Isotopic discrimination factors and nitrogen turnover rates in reared Atlantic bluefin tuna larvae (Thunnus thynnus: effects of maternal transmission

    Directory of Open Access Journals (Sweden)

    Amaya Uriarte

    2016-11-01

    Full Text Available The use of stable isotope analysis to study animal diets requires estimates of isotopic turnover rates (half time, t50 and discrimination factors (Δ for an accurate interpretation of trophic patterns. The stable isotopes of carbon and nitrogen were analysed for eggs and reared larvae of Thunnus thynnus, as well as for the different diets supplied during the experiment. The results showed high values of δ15N in eggs and larvae (n=646 until 4 DAH. After this time lapse, the stable isotope values declined progressively until 12 DAH, when notochord flexion began. The δ13C showed an inverse trend, suggesting that maternal inheritance of the stable isotopes is evident until pre-flexion stages. This study proposes a model for estimating maternal isotopic signatures of bluefin broodstock. After notochord flexion, larvae were fed with aquaculture-bred gilthead seabream, which resulted in a rapid increase of bluefin larvae δ15N values together with a rapid decrease in δ13C values. The estimated nitrogen half-time to reach the steady state from the diet was 2.5±0.3 days and the discrimination factor was 0.4±0.3(‰. These results represent the first data set that has allowed isotopic nitrogen turnover rates and discrimination factors of the larval stages of bluefin tuna to be estimated.

  4. Molecular Identification of Atlantic Bluefin Tuna (Thunnus thynnus, Scombridae Larvae and Development of a DNA Character-Based Identification Key for Mediterranean Scombrids.

    Directory of Open Access Journals (Sweden)

    Gregory Neils Puncher

    Full Text Available The Atlantic bluefin tuna, Thunnus thynnus, is a commercially important species that has been severely over-exploited in the recent past. Although the eastern Atlantic and Mediterranean stock is now showing signs of recovery, its current status remains very uncertain and as a consequence their recovery is dependent upon severe management informed by rigorous scientific research. Monitoring of early life history stages can inform decision makers about the health of the species based upon recruitment and survival rates. Misidentification of fish larvae and eggs can lead to inaccurate estimates of stock biomass and productivity which can trigger demands for increased quotas and unsound management conclusions. Herein we used a molecular approach employing mitochondrial and nuclear genes (CO1 and ITS1, respectively to identify larvae (n = 188 collected from three spawning areas in the Mediterranean Sea by different institutions working with a regional fisheries management organization. Several techniques were used to analyze the genetic sequences (sequence alignments using search algorithms, neighbour joining trees, and a genetic character-based identification key and an extensive comparison of the results is presented. During this process various inaccuracies in related publications and online databases were uncovered. Our results reveal important differences in the accuracy of the taxonomic identifications carried out by different ichthyoplanktologists following morphology-based methods. While less than half of larvae provided were bluefin tuna, other dominant taxa were bullet tuna (Auxis rochei, albacore (Thunnus alalunga and little tunny (Euthynnus alletteratus. We advocate an expansion of expertise for a new generation of morphology-based taxonomists, increased dialogue between morphology-based and molecular taxonomists and increased scrutiny of public sequence databases.

  5. Morphological, nutritional and safety traits of bluefin tuna (Thunnus thynnus reared in floating cages

    Directory of Open Access Journals (Sweden)

    B. M. Poli

    2010-04-01

    Full Text Available To evaluate the influence of fattening on morphological, nutritional and safety characteristics, two lots of bluefin tuna were sampled before (November: 2 C, 4 ? and after 5 months of fattening (April: 5 C, 5 ?. The specimens, after death, were refrigerated and analysed at different times over the period of a week for morphological and flesh physico-chemical parameters in six muscle sites. Tuna sampled in April had greater body weight (44.04 vs 36.41kg, trunk length (52.21 vs 48.22cm and minimum and maximum circumferences (13.74 vs 12.77 and 94.90 vs 89.10cm. No differences in other linear measures or body components were found. Fattening did not influence flesh colour or total lipid content, producing small differences in its chemical composition: greater C18:0, C18:1n9 and PUFAn6 percentages; higher putrescine and histamine (0.489 vs 0.335 and 0.666 vs 0.370mg/kg but lower spermine and spermidine (10.598 vs 17.387 and 2.420 vs 3.928mg/kg levels. Large differences in physico-chemical parameters were found between muscle sites and a significant interaction between sampling date and muscle site indicated non homogeneous changes in chemical composition of dorsal, ventral and red muscle after fattening. Sex only influenced fat content in viscera (C 12.84 vs ? 9.84%.

  6. Projections of climate-driven changes in tuna vertical habitat based on species-specific differences in blood oxygen affinity.

    Science.gov (United States)

    Mislan, K A S; Deutsch, Curtis A; Brill, Richard W; Dunne, John P; Sarmiento, Jorge L

    2017-10-01

    Oxygen concentrations are hypothesized to decrease in many areas of the ocean as a result of anthropogenically driven climate change, resulting in habitat compression for pelagic animals. The oxygen partial pressure, pO 2 , at which blood is 50% saturated (P 50 ) is a measure of blood oxygen affinity and a gauge of the tolerance of animals for low ambient oxygen. Tuna species display a wide range of blood oxygen affinities (i.e., P 50 values) and therefore may be differentially impacted by habitat compression as they make extensive vertical movements to forage on subdaily time scales. To project the effects of end-of-the-century climate change on tuna habitat, we calculate tuna P 50 depths (i.e., the vertical position in the water column at which ambient pO 2 is equal to species-specific blood P 50 values) from 21st century Earth System Model (ESM) projections included in the fifth phase of the Climate Model Intercomparison Project (CMIP5). Overall, we project P 50 depths to shoal, indicating likely habitat compression for tuna species due to climate change. Tunas that will be most impacted by shoaling are Pacific and southern bluefin tunas-habitat compression is projected for the entire geographic range of Pacific bluefin tuna and for the spawning region of southern bluefin tuna. Vertical shifts in P 50 depths will potentially influence resource partitioning among Pacific bluefin, bigeye, yellowfin, and skipjack tunas in the northern subtropical and eastern tropical Pacific Ocean, the Arabian Sea, and the Bay of Bengal. By establishing linkages between tuna physiology and environmental conditions, we provide a mechanistic basis to project the effects of anthropogenic climate change on tuna habitats. Published 2017. This article is a U.S. Government work and is in the public domain in the USA.

  7. Thawing of Frozen Tuna Meat

    Science.gov (United States)

    Tanaka, Takeo; Nishiwaki, Kôji; Kakuda, Kitonari; Tomimatsu, Takao

    Frozen southern bluefin tuna meat discolors easily and sometimes contracts when thawed caused by thaw rigor. These phenomenon often become problematic in the transaction or handling of this kind of frozen tuna. Frozen meat blocks of southern Bluefin tuna were thawed separately by air thawing, running water thawing and microwave thawing. Changes occurring during thawing were checked for meat color by met-myoglobin ratio determination and for contract by microscopic observation. Results are as follows : (1) Discoloration scarcely occurred in the process of running water thawing (at 10°C for 50 min, or at 0°C for 6 hr). (2) No contraction was observed during thawing with running water described above and air thawing (at 18-20°C for 6 hr). (3) Discoloration and contraction seemed to be minimized, as to latently contractile blocks, when meat temperature passed through rapidly between -10°C and -5°C, and slowly (for 5-6 hr) between -5°C and -1°C. When the block was originally not contractile, discloration was minimized by rising meat temperature rapidly from -10°C to -l°C.

  8. Genetic Structure of Bluefin Tuna in the Mediterranean Sea Correlates with Environmental Variables

    Science.gov (United States)

    Riccioni, Giulia; Stagioni, Marco; Landi, Monica; Ferrara, Giorgia; Barbujani, Guido; Tinti, Fausto

    2013-01-01

    Background Atlantic Bluefin Tuna (ABFT) shows complex demography and ecological variation in the Mediterranean Sea. Genetic surveys have detected significant, although weak, signals of population structuring; catch series analyses and tagging programs identified complex ABFT spatial dynamics and migration patterns. Here, we tested the hypothesis that the genetic structure of the ABFT in the Mediterranean is correlated with mean surface temperature and salinity. Methodology We used six samples collected from Western and Central Mediterranean integrated with a new sample collected from the recently identified easternmost reproductive area of Levantine Sea. To assess population structure in the Mediterranean we used a multidisciplinary framework combining classical population genetics, spatial and Bayesian clustering methods and a multivariate approach based on factor analysis. Conclusions FST analysis and Bayesian clustering methods detected several subpopulations in the Mediterranean, a result also supported by multivariate analyses. In addition, we identified significant correlations of genetic diversity with mean salinity and surface temperature values revealing that ABFT is genetically structured along two environmental gradients. These results suggest that a preference for some spawning habitat conditions could contribute to shape ABFT genetic structuring in the Mediterranean. However, further studies should be performed to assess to what extent ABFT spawning behaviour in the Mediterranean Sea can be affected by environmental variation. PMID:24260341

  9. Amino Acid Isotope Incorporation and Enrichment Factors in Pacific Bluefin Tuna, Thunnus orientalis

    Science.gov (United States)

    Bradley, Christina J.; Madigan, Daniel J.; Block, Barbara A.; Popp, Brian N.

    2014-01-01

    Compound specific isotopic analysis (CSIA) of amino acids has received increasing attention in ecological studies in recent years due to its ability to evaluate trophic positions and elucidate baseline nutrient sources. However, the incorporation rates of individual amino acids into protein and specific trophic discrimination factors (TDFs) are largely unknown, limiting the application of CSIA to trophic studies. We determined nitrogen turnover rates of individual amino acids from a long-term (up to 1054 days) laboratory experiment using captive Pacific bluefin tuna, Thunnus orientalis (PBFT), a large endothermic pelagic fish fed a controlled diet. Small PBFT (white muscle δ15N∼11.5‰) were collected in San Diego, CA and transported to the Tuna Research and Conservation Center (TRCC) where they were fed a controlled diet with high δ15N values relative to PBFT white muscle (diet δ15N∼13.9‰). Half-lives of trophic and source amino acids ranged from 28.6 to 305.4 days and 67.5 to 136.2 days, respectively. The TDF for the weighted mean values of amino acids was 3.0 ‰, ranging from 2.2 to 15.8 ‰ for individual combinations of 6 trophic and 5 source amino acids. Changes in the δ15N values of amino acids across trophic levels are the underlying drivers of the trophic 15N enrichment. Nearly all amino acid δ15N values in this experiment changed exponentially and could be described by a single compartment model. Significant differences in the rate of 15N incorporation were found for source and trophic amino acids both within and between these groups. Varying half-lives of individual amino acids can be applied to migratory organisms as isotopic clocks, determining the length of time an individual has spent in a new environment. These results greatly enhance the ability to interpret compound specific isotope analyses in trophic studies. PMID:24465724

  10. Into the deep blue sea: Commons theory and international governance of Atlantic Bluefin Tuna

    Directory of Open Access Journals (Sweden)

    Graham Epstein

    2014-08-01

    Full Text Available The need to understand how to sustainably govern oceanic fisheries has become increasingly urgent as their contribution to global food security and livelihoods are threatened by declining stocks. Atlantic Bluefin Tuna (ABFT is a prominent example of the complexities associated with widely distributed oceanic resources, extending in this case to include much of the North-Atlantic and Mediterranean Sea. This distribution has led to limited attention from commons theorists that tend to focus on small-scale social ecological systems. Therefore in order to explore the fit between theories of the commons developed in small-scale systems, we apply the Social-Ecological Systems Meta-Analysis Database (SESMAD to systematically analyze ABFT governance over a 22 year period. The results, which focus on the effects of resource characteristics, broadly correspond to the expectations of commons theory. Interestingly, however, the addition of resource storage in the form of ABFT ranches appears to be contributing to unsustainable harvests. This stands in contrast to previous findings in the commons literature that storage tends to enhance prospects for sustainable governance. Therefore several alternative hypotheses are developed by comparing and contrasting attributes of ABFT and canal irrigation storage. These hypotheses may be used in future research to evaluate the conditions in which storage enhances prospects for sustainable governance.

  11. The Real maccoyii: Identifying Tuna Sushi with DNA Barcodes – Contrasting Characteristic Attributes and Genetic Distances

    Science.gov (United States)

    Lowenstein, Jacob H.; Amato, George; Kolokotronis, Sergios-Orestis

    2009-01-01

    Background The use of DNA barcodes for the identification of described species is one of the least controversial and most promising applications of barcoding. There is no consensus, however, as to what constitutes an appropriate identification standard and most barcoding efforts simply attempt to pair a query sequence with reference sequences and deem identification successful if it falls within the bounds of some pre-established cutoffs using genetic distance. Since the Renaissance, however, most biological classification schemes have relied on the use of diagnostic characters to identify and place species. Methodology/Principal Findings Here we developed a cytochrome c oxidase subunit I character-based key for the identification of all tuna species of the genus Thunnus, and compared its performance with distance-based measures for identification of 68 samples of tuna sushi purchased from 31 restaurants in Manhattan (New York City) and Denver, Colorado. Both the character-based key and GenBank BLAST successfully identified 100% of the tuna samples, while the Barcode of Life Database (BOLD) as well as genetic distance thresholds, and neighbor-joining phylogenetic tree building performed poorly in terms of species identification. A piece of tuna sushi has the potential to be an endangered species, a fraud, or a health hazard. All three of these cases were uncovered in this study. Nineteen restaurant establishments were unable to clarify or misrepresented what species they sold. Five out of nine samples sold as a variant of “white tuna” were not albacore (T. alalunga), but escolar (Lepidocybium flavorunneum), a gempylid species banned for sale in Italy and Japan due to health concerns. Nineteen samples were northern bluefin tuna (T. thynnus) or the critically endangered southern bluefin tuna (T. maccoyii), though nine restaurants that sold these species did not state these species on their menus. Conclusions/Significance The Convention on International Trade

  12. Quantifying mercury isotope dynamics in captive Pacific bluefin tuna (Thunnus orientalis

    Directory of Open Access Journals (Sweden)

    Sae Yun Kwon

    2016-02-01

    Full Text Available Abstract Analyses of mercury (Hg isotope ratios in fish tissues are used increasingly to infer sources and biogeochemical processes of Hg in natural aquatic ecosystems. Controlled experiments that can couple internal Hg isotope behavior with traditional isotope tracers (δ13C, δ15N can improve the applicability of Hg isotopes as natural ecological tracers. In this study, we investigated changes in Hg isotope ratios (δ202Hg, Δ199Hg during bioaccumulation of natural diets in the pelagic Pacific bluefin tuna (Thunnus orientalis; PBFT. Juvenile PBFT were fed a mixture of natural prey and a dietary supplement (60% Loligo opalescens, 31% Sardinops sagax, 9% gel supplement in captivity for 2914 days, and white muscle tissues were analyzed for Hg isotope ratios and compared to time in captivity and internal turnover of δ13C and δ15N. PBFT muscle tissues equilibrated to Hg isotope ratios of the dietary mixture within ∼700 days, after which we observed a cessation in further shifts in Δ199Hg, and small but significant negative δ202Hg shifts from the dietary mixture. The internal behavior of Δ199Hg is consistent with previous fish studies, which showed an absence of Δ199Hg fractionation during Hg bioaccumulation. The negative δ202Hg shifts can be attributed to either preferential excretion of Hg with higher δ202Hg values or individual variability in captive PBFT feeding preferences and/or consumption rates. The overall internal behavior of Hg isotopes is similar to that described for δ13C and δ15N, though observed Hg turnover was slower compared to carbon and nitrogen. This improved understanding of internal dynamics of Hg isotopes in relation to δ13C and δ15N enhances the applicability of Hg isotope ratios in fish tissues for tracing Hg sources in natural ecosystems.

  13. [Otolith microchemistry of tuna species: research progress].

    Science.gov (United States)

    Zhu, Guo-ping

    2011-08-01

    Microchemistry analysis of trace elements and isotopes in fishes' calcified substances is an emerging approach to analyze the population structure, life history, and migration environmental history of fishes. With the increasing improvement of the researches and applications of otolith microchemistry, this approach has been a good tool for studying the ecology of tuna species. Currently, the research contents of tuna species' otolith microchemistry mainly include trace elements and isotopes, and the former is the emphasis and hotspot in applied research, playing a vital role in the researches of population partitioning, natal origin, migration environmental history, and life history of tuna species, especially bluefin tuna. However, most of the researches are focusing on the variation of otolith's Sr/Ca ratio, and there is no final conclusion on the relationships between the fractionation of isotopes C and O in otolith and the temperature. For the sake of exploiting the huge value of otolith microchemistry, it would be necessary to strengthen the researches on the deposition mechanisms of trace elements in otolith, and to analyze the spatio-temporal variations of various trace elements in otolith by comprehensive research methods.

  14. Dietary evidence of mesopelagic and pelagic foraging by Atlantic bluefin tuna (Thunnus thynnus L.) during autumn migrations to the Iceland Basin

    DEFF Research Database (Denmark)

    Olafsdottir, Droplaug; MacKenzie, Brian; Chosson-P, Valérie

    2016-01-01

    Atlantic bluefin tuna (ABFT; Thunnus thynnus) is a large highly mobile predator fish species in the North Atlantic Ocean and Mediterranean Sea. Knowledge of its trophic role in marine food webs in summer feeding areas is presently based on recent (1980–2010s) sampling in the Bay of Biscay, Gulfs...... of Maine and St. Lawrence, and from historical (1950–1960s) sampling in the Norwegian-North Sea-Kattegat. No study has yet investigated the diets of ABFT in Icelandic waters, where it supported an experimental fishery during 1996–2005, nor in any region north of the Bay of Biscay since the 1960s. However......, north Atlantic temperatures and fish species distributions, including some ABFT prey species (e.g., mackerel) have been changing in the 2000s. New knowledge of ABFT diets in previously understudied parts of the species range will be useful for understanding factors affecting the trophic role, migration...

  15. Bioenergetics, Trophic Ecology, and Niche Separation of Tunas.

    Science.gov (United States)

    Olson, R J; Young, J W; Ménard, F; Potier, M; Allain, V; Goñi, N; Logan, J M; Galván-Magaña, F

    Tunas are highly specialized predators that have evolved numerous adaptations for a lifestyle that requires large amounts of energy consumption. Here we review our understanding of the bioenergetics and feeding dynamics of tunas on a global scale, with an emphasis on yellowfin, bigeye, skipjack, albacore, and Atlantic bluefin tunas. Food consumption balances bioenergetics expenditures for respiration, growth (including gonad production), specific dynamic action, egestion, and excretion. Tunas feed across the micronekton and some large zooplankton. Some tunas appear to time their life history to take advantage of ephemeral aggregations of crustacean, fish, and molluscan prey. Ontogenetic and spatial diet differences are substantial, and significant interdecadal changes in prey composition have been observed. Diet shifts from larger to smaller prey taxa highlight ecosystem-wide changes in prey availability and diversity and provide implications for changing bioenergetics requirements into the future. Where tunas overlap, we show evidence of niche separation between them; resources are divided largely by differences in diet percentages and size ranges of prey taxa. The lack of long-term data limits the ability to predict impacts of climate change on tuna feeding behaviour. We note the need for systematic collection of feeding data as part of routine monitoring of these species, and we highlight the advantages of using biochemical techniques for broad-scale analyses of trophic relations. We support the continued development of ecosystem models, which all too often lack the regional-specific trophic data needed to adequately investigate climate and fishing impacts. © 2016 Elsevier Ltd. All rights reserved.

  16. Spawning Dynamics and Size Related Trends in Reproductive Parameters of Southern Bluefin Tuna, Thunnus maccoyii.

    Directory of Open Access Journals (Sweden)

    Jessica H Farley

    Full Text Available Knowledge of spawning behaviour and fecundity of fish is important for estimating the reproductive potential of a stock and for constructing appropriate statistical models for assessing sustainable catch levels. Estimates of length-based reproductive parameters are particularly important for determining potential annual fecundity as a function of fish size, but they are often difficult to estimate reliably. Here we provide new information on the reproductive dynamics of southern bluefin tuna (SBT Thunnus maccoyii through the analysis of fish size and ovary histology collected on the spawning ground in 1993-1995 and 1999-2002. These are used to refine previous parameter estimates of spawning dynamics and investigate size related trends in these parameters. Our results suggest that the small SBT tend to arrive on the spawning ground slightly later and depart earlier in the spawning season relative to large fish. All females were mature and the majority were classed as spawning capable (actively spawning or non-spawning with a very small proportion classed as regressing. The fraction of females spawning per day decreased with fish size, but once females start a spawning episode, they spawned daily irrespective of size. Mean batch fecundity was estimated directly at 6.5 million oocytes. Analysis of ovary histology and ovary weight data indicated that relative batch fecundity, and the duration of spawning and non-spawning episodes, increased with fish size. These reproductive parameter estimates could be used with estimates of residency time on the spawning ground as a function of fish size (if known and demographic data for the spawning population to provide a time series of relative annual fecundity for SBT.

  17. 76 FR 13583 - Atlantic Highly Migratory Species; Atlantic Bluefin Tuna Quotas and Atlantic Tuna Fisheries...

    Science.gov (United States)

    2011-03-14

    ... address concerns raised in a recent decision by a NOAA Administrative Law Judge (see Atlantic Tunas Transfer at Sea section for case reference). NMFS has prepared a draft Environmental Assessment (EA... subtraction of these allocations directly from the TAC, the recommendation allocates the remainder to the UK...

  18. Spatial and temporal variability in the trans-Pacific migration of Pacific bluefin tuna (Thunnus orientalis) revealed by archival tags

    Science.gov (United States)

    Fujioka, Ko; Fukuda, Hiromu; Tei, Yaoki; Okamoto, Suguru; Kiyofuji, Hidetada; Furukawa, Seishiro; Takagi, Junichi; Estess, Ethan; Farwell, Charles J.; Fuller, Daniel W.; Suzuki, Nobuaki; Ohshimo, Seiji; Kitagawa, Takashi

    2018-03-01

    Archival electronic tags were internally implanted in 713 age-0 Pacific bluefin tuna (PBF) caught in their nursery waters off the southern coast of Japan and in the East China Sea over an extended study period (1995-2015) to clarify the spatial and temporal variability of their trans-Pacific migration. Two hundred twenty-five of these tagged tuna were recaptured by fisheries (31.6%), and we successfully retrieved tag data from 14 of 21 individuals recovered in the Eastern pacific. Furthermore, one archival tag recovered in the Western Pacific revealed that the individual had performed a trans-Pacific migration, so in total 21 tagged PBF were shown to have migrated to the Eastern Pacific (2.9% of the total tags released). We successfully downloaded data from 15 of these 21 archival tags, which revealed that some age-1 PBF migrate rapidly (123.9 ± 82.8 km day-1) and directly from waters offshore of Japan to the eastern Pacific (160.0°E to 130.0°W), a journey that takes an average of 2.5 months (ranging from 1.2 to 5.5 months) through relatively cool waters (14.7 ± 2.0 °C). All juvenile PBF began their trans-Pacific migration shortly after exposure to cooler water temperatures (physiological challenge for this age class. Three patterns were identified in the timing of the departure of juvenile PBF from the western Pacific: departing 12-14 months post-hatch (N = 7) in early summer (May-July), departing 17-19 months post-hatch (N = 7) in late autumn (October-December), and departing 21 months post-hatch (N = 1) in late winter (February). The PBF tagged along the southern coast of Japan (SCJ) arrived in the eastern Pacific earlier than those tagged in the East China Sea (ECS), most likely due to the shorter travel distance. Additionally, the PBF that began their trans-Pacific migration in the earlier period remained in an offshore foraging zone (the Kuroshio-Oyashio transition region) for shorter periods (2.8 months on average) and at lower latitudes (35.0

  19. CULTURAL MEMORY OF VICTORY OF LAS TUNAS CITY' LODGES FROM 1930 TO 1945 / MEMORIA CULTURAL DE LAS LOGIAS DE VICTORIA DE LAS TUNAS 1930-1945

    Directory of Open Access Journals (Sweden)

    Milena Medina Pérez

    2012-09-01

    Full Text Available The cultural memory of the lodges of Victoria de Las Tunas (1930-1945, it constitutes the topic of the present investigation. The thematic of the lodges has been approached for studious and investigating, not alone of the town but of several parts of the world. Still when these studies exist, the related with the cultural memory of the lodges of the territory, is in the pages of the documents of the time that which leaves to the light starting from this investigation, to show yesterday's Tunas, rich in histories and anecdotes. In the town during the investigated period the lodges Masonic Children of Hiram existed, Vicente García No. 27, the young AJEF, the lodge Teosófica Esperanza, the Children of East No. 54 of the Odd Independent Fellows, the lodge Cucalambé of the Odd United Fellows and the lodge Victoria de Las Tunas No. 78 of the Luz's Order Gentlemen.

  20. A validated methodology for genetic identification of tuna species (genus Thunnus.

    Directory of Open Access Journals (Sweden)

    Jordi Viñas

    2009-10-01

    Full Text Available Tuna species of the genus Thunnus, such as the bluefin tunas, are some of the most important and yet most endangered trade fish in the world. Identification of these species in traded forms, however, may be difficult depending on the presentation of the products, which may hamper conservation efforts on trade control. In this paper, we validated a genetic methodology that can fully distinguish between the eight Thunnus species from any kind of processed tissue.After testing several genetic markers, a complete discrimination of the eight tuna species was achieved using Forensically Informative Nucleotide Sequencing based primarily on the sequence variability of the hypervariable genetic marker mitochondrial DNA control region (mtDNA CR, followed, in some specific cases, by a second validation by a nuclear marker rDNA first internal transcribed spacer (ITS1. This methodology was able to distinguish all tuna species, including those belonging to the subgenus Neothunnus that are very closely related, and in consequence can not be differentiated with other genetic markers of lower variability. This methodology also took into consideration the presence of introgression that has been reported in past studies between T. thynnus, T. orientalis and T. alalunga. Finally, we applied the methodology to cross-check the species identity of 26 processed tuna samples.Using the combination of two genetic markers, one mitochondrial and another nuclear, allows a full discrimination between all eight tuna species. Unexpectedly, the genetic marker traditionally used for DNA barcoding, cytochrome oxidase 1, could not differentiate all species, thus its use as a genetic marker for tuna species identification is questioned.

  1. Incorporation of habitat information in the development of indices of larval bluefin tuna (Thunnus thynnus) in the Western Mediterranean Sea (2001-2005 and 2012-2013)

    Science.gov (United States)

    Ingram, G. Walter; Alvarez-Berastegui, Diego; Reglero, Patricia; Balbín, Rosa; García, Alberto; Alemany, Francisco

    2017-06-01

    Fishery independent indices of bluefin tuna larvae in the Western Mediterranean Sea are presented utilizing ichthyoplankton survey data collected from 2001 through 2005 and 2012 through 2013. Indices were developed using larval catch rates collected using two different types of bongo sampling, by first standardizing catch rates by gear/fishing-style and then employing a delta-lognormal modeling approach. The delta-lognormal models were developed three ways: 1) a basic larval index including the following covariates: time of day, a systematic geographic area variable, month and year; 2) a standard environmental larval index including the following covariates: mean water temperature over the mixed layer depth, mean salinity over the mixed layer depth, geostrophic velocity, time of day, a systematic geographic area variable, month and year; and 3) a habitat-adjusted larval index including the following covariates: a potential habitat variable, time of day, a systematic geographic area variable, month and year. Results indicated that all three model-types had similar precision in index values. However, the habitat-adjusted larval index demonstrated a high correlation with estimates of spawning stock biomass from the previous stock assessment model, and, therefore, is recommended as a tuning index in future stock assessment models.

  2. Data reconstruction can improve abundance index estimation: An example using Taiwanese longline data for Pacific bluefin tuna.

    Directory of Open Access Journals (Sweden)

    Shui-Kai Chang

    Full Text Available Catch-per-unit-effort (CPUE is often the main piece of information used in fisheries stock assessment; however, the catch and effort data that are traditionally compiled from commercial logbooks can be incomplete or unreliable due to many reasons. Pacific bluefin tuna (PBF is a seasonal target species in the Taiwanese longline fishery. Since 2010, detailed catch information for each PBF has been made available through a catch documentation scheme. However, previously, only market landing data with a low coverage of logbooks were available. Therefore, several nontraditional procedures were performed to reconstruct catch and effort data from many alternative data sources not directly obtained from fishers for 2001-2015: (1 Estimating the catch number from the landing weight for 2001-2003, for which the catch number information was incomplete, based on Monte Carlo simulation; (2 deriving fishing days for 2007-2009 from voyage data recorder data, based on a newly developed algorithm; and (3 deriving fishing days for 2001-2006 from vessel trip information, based on linear relationships between fishing and at-sea days. Subsequently, generalized linear mixed models were developed with the delta-lognormal assumption for standardizing the CPUE calculated from the reconstructed data, and three-stage model evaluation was performed using (1 Akaike and Bayesian information criteria to determine the most favorable variable composition of standardization models, (2 overall R2 via cross-validation to compare fitting performance between area-separated and area-combined standardizations, and (3 system-based testing to explore the consistency of the standardized CPUEs with auxiliary data in the PBF stock assessment model. The last stage of evaluation revealed high consistency among the data, thus demonstrating improvements in data reconstruction for estimating the abundance index, and consequently the stock assessment.

  3. Proactive Conservation Program: Species of Concern :: NOAA Fisheries

    Science.gov (United States)

    Invertebrates & Plants Species of Concern Threatened & Endangered Health & Stranding Marine Mammals : Species of Concern Species of Concern List | Grants and Technical Resources/Links bluefin tuna Bluefin Tuna (Thunnus thynnus) Photo: NOAA Species of Concern are those species about which we have some

  4. 77 FR 19175 - Atlantic Highly Migratory Species; 2012 Atlantic Bluefin Tuna Quota Specifications

    Science.gov (United States)

    2012-03-30

    ...). Attachments to electronic comments will be accepted in Microsoft Word or Excel, WordPerfect, or Adobe PDF file... active member of the International Commission for the Conservation of Atlantic Tunas (ICCAT), the United States implements binding ICCAT recommendations to comply with this international treaty. ATCA authorizes...

  5. 76 FR 31556 - Endangered and Threatened Wildlife and Plants; Endangered Species Act Listing Determination for...

    Science.gov (United States)

    2011-06-01

    ... Atlantic bluefin tuna (Thunnus thynnus) as threatened or endangered under the Endangered Species Act (ESA... Species Act Listing Determination for Atlantic Bluefin Tuna AGENCY: National Marine Fisheries Service... endangered species within the foreseeable future throughout all or a significant portion of its range.'' The...

  6. Trophic ecology of Atlantic Bluefin Tuna (Thunnus thynnus [corrected] larvae from the Gulf of Mexico and NW Mediterranean spawning grounds: A Comparative Stable Isotope Study.

    Directory of Open Access Journals (Sweden)

    Raúl Laiz-Carrión

    Full Text Available The present study uses stable isotopes of nitrogen and carbon (δ15Nandδ13C as trophic indicators for Atlantic bluefin tuna larvae (BFT (6-10 mm standard length in the highly contrasting environmental conditions of the Gulf of Mexico (GOM and the Balearic Sea (MED. These regions are differentiated by their temperature regime and relative productivity, with the GOM being significantly warmer and more productive. MED BFT larvae showed the highest δ15N signatures, implying an elevated trophic position above the underlying microzooplankton baseline. Ontogenetic dietary shifts were observed in the BFT larvae from the GOM and MED which indicates early life trophodynamics differences between these spawning habitats. Significant trophic differences between the GOM and MED larvae were observed in relation to δ15N signatures in favour of the MED larvae, which may have important implications in their growth during their early life stages.These low δ15N levels in the zooplankton from the GOM may be an indication of a shifting isotopic baseline in pelagic food webs due to diatrophic inputs by cyanobacteria. Lack of enrichment for δ15N in BFT larvae compared to zooplankton implies an alternative grazing pathway from the traditional food chain of phytoplankton-zooplankton-larval fish. Results provide insight for a comparative characterization of the trophic pathways variability of the two main spawning grounds for BFT larvae.

  7. CPUE TRENDS OF THE INDONESIA’S TUNA LONGLINE FISHERY: LESSONS LEARNED FROM A TRIAL OBSERVER PROGRAM

    Directory of Open Access Journals (Sweden)

    Lilis Sadiyah

    2014-06-01

    Full Text Available In an effort to address a shortage of reliable CPUE information, and as a preliminary step to a broader observer program, Indonesia established a Trial Observer Program (TOP for the industrial tuna long line fishery based at Benoa Fishing Port, Bali, in mid 2005. The objectives of this paper are i to describe spatial and temporal catch and effort trends from the Indonesian Indian Ocean industrial tuna long line fishery based at Benoa Fishing Port, and ii to provide an understanding of the fishing strategies used by different companies and of the environmental conditions that may influence catch trends. The observed effort covered areas both north and south of 20°S, with a concentration within 10°-20°S; 105°-120°E which overlaps with the only known spawning grounds of southern bluefin tuna (SBT. This data set showed that SBT comprised the lowest catch proportion, relative to the other three tuna species caught, bigeye tuna (BET, yellowfin tuna (YFT and albacore (ALB. BET and ALB had been suggested as the main target species for the fishery, but this varied by region. The TOP data set suggests that different tuna fishing companies targeted different species and used different fishing practices, including differences in bait used, areas fished, start time of setting, and the number of hooks between floats (HBF. It is a priority to improve the spatial and temporal coverage of the observer program before the data can be considered to be representative of the fleet, particularly given the high degree of variability in fishing practices between companies.

  8. Direct quantification of energy intake in an apex marine predator suggests physiology is a key driver of migrations.

    Science.gov (United States)

    Whitlock, Rebecca E; Hazen, Elliott L; Walli, Andreas; Farwell, Charles; Bograd, Steven J; Foley, David G; Castleton, Michael; Block, Barbara A

    2015-09-01

    Pacific bluefin tuna (Thunnus orientalis) are highly migratory apex marine predators that inhabit a broad thermal niche. The energy needed for migration must be garnered by foraging, but measuring energy intake in the marine environment is challenging. We quantified the energy intake of Pacific bluefin tuna in the California Current using a laboratory-validated model, the first such measurement in a wild marine predator. Mean daily energy intake was highest off the coast of Baja California, Mexico in summer (mean ± SD, 1034 ± 669 kcal), followed by autumn when Pacific bluefin achieve their northernmost range in waters off northern California (944 ± 579 kcal). Movements were not always consistent with maximizing energy intake: the Pacific bluefin move out of energy rich waters both in late summer and winter, coincident with rising and falling water temperatures, respectively. We hypothesize that temperature-related physiological constraints drive migration and that Pacific bluefin tuna optimize energy intake within a range of optimal aerobic performance.

  9. CULTURAL MEMORY OF VICTORY OF LAS TUNAS CITY' LODGES FROM 1930 TO 1945 / MEMORIA CULTURAL DE LAS LOGIAS DE VICTORIA DE LAS TUNAS 1930-1945

    OpenAIRE

    Milena Medina Pérez

    2012-01-01

    The cultural memory of the lodges of Victoria de Las Tunas (1930-1945), it constitutes the topic of the present investigation. The thematic of the lodges has been approached for studious and investigating, not alone of the town but of several parts of the world. Still when these studies exist, the related with the cultural memory of the lodges of the territory, is in the pages of the documents of the time that which leaves to the light starting from this investigation, to show yesterday's Tun...

  10. Ecological role of bluefin tuna (Thunnus thynnus) fish farms for associated wild fish assemblages in the Mediterranean Sea.

    Science.gov (United States)

    Stagličić, Nika; Šegvić-Bubić, Tanja; Ugarković, Pero; Talijančić, Igor; Žužul, Iva; Tičina, Vjekoslav; Grubišić, Leon

    2017-12-01

    The ecological effects of tuna fish farms are largely undocumented. This study confirmed their high capacity to attract surrounding wild fish. The aggregation effect persisted year round, without detectable seasonal differences. Farm impact was restricted to close proximity of the sea cages, and was more prominent over the bottom than in the water column strata. Tuna fish farms proved to be high energy trophic resources, as indicated by the enhanced fitness status of two focal species, bogue and seabream. Under abundant food supply, seabream appear to allocate the majority of energy reserves to gonad development. Farm associated bogue had greater parasite loads, with no detrimental effect on fitness status. Overall, tuna fish farms can be regarded as population sources for aggregated wild fish, and under the no fishing conditions within the leasehold areas, can serve as functional marine protected areas. Copyright © 2017 Elsevier Ltd. All rights reserved.

  11. Animal Telemetry Network Data Assembly Center: Phase 2

    Science.gov (United States)

    2015-09-30

    sampling of the Pacific bluefin tuna data and no white shark data from TOPP, as well as a small sample of the Atlantic bluefin tuna data from TAG and...Satellite Relay Data Logger, Fastloc GPS), Wildlife Computers (SPOT and SPLASH) 2) Acoustic data ( white sharks ) via automated Iridium satellite...Computers MK10, MiniPAT) that report throughout the year (e.g. blue marlin from the IGFA Great Marlin Race), and then take approximately 20 days to

  12. UTILITY OF FISHERY HIGH SCHOOL DATA IN EXAMINING SPATIAL AND TEMPORAL CATCH AND EFFORT TRENDS IN THE INDONESIAN LONGLINE TUNA FISHERY

    Directory of Open Access Journals (Sweden)

    Lilis Sadiyah

    2015-12-01

    Full Text Available One of the endeavours to address the shortage of catch per unit effort (CPUE information from the Indonesian Indian Ocean tuna fishery is the collation of a large amount of catch and effort data collected by Indonesian Fisheries High School students (“FHS data”. This paper attempts to investigate spatial-temporal patterns of catch and effort of the FHS data for the main tuna species caught by the fishery: bigeye tuna (Thunnus obesus - BET, yellowfin tuna (T. albacares - YFT, albacore (T. alalunga - ALB and southern bluefin tuna (T.maccoyii - SBT. Reported sets occurred in the Eastern Indian Ocean, north and south of 20°S. Recorded effort from the FHS data set was concentrated within the only known SBT spawning ground. However, within this data set, SBT were recorded in the lowest catch proportion relative to BET, YFT and ALB. The catch composition data suggested that YFT and ALB were predominantly targeted by the fishery, with ALB and SBT most predominantly recorded south of 20°S, whereas BET and YFT were mostly recorded north of 20°S. Unfortunately, there was no strong information on targeting practices reported by this data set, limiting any attempts to understand the factors that influenced those results. As the sampling predominantly occurred in between July and December, the data are not representative of fishing activities throughout the entire year, and any seasonal patterns from the FHS data set are biased. In addition, the FHS data set is prone to observation error and uncertainty in terms of fish identification and fishing location. Therefore, the FHS data set needs to be interpreted with caution.

  13. Value Chain Model Development of Tuna and Tuna Alike In Indonesia

    Directory of Open Access Journals (Sweden)

    Ateng Supriatna

    2014-11-01

    Full Text Available Sustainability of tuna and tuna alike fisheries depend on chain value system formed by stakeholders ranging from product fishing, processing/diversification, distribution, and marketing. The objective of this research was to create chain value system model of tuna and tuna alike fisheries, to predict the interaction pattern of stakeholders and to formulate the precise strategy to minimize the synergy resistance of chain value system development strategy of tuna and tuna alike fisheries. Structural Equation Modelling (SEM was applied to analyze the chain value model. The stakeholders/the players of tuna and tuna alike fisheries basically have positive interaction (CE>0.The negative interaction occured on retailers and consumers. Interaction of retailers with consumers is significant (p<0.05 0.01. Interaction pattern of fishermen, retailers, collectors, and exporters affected significantlly by pricing and the level of role played by the stakeholders. The strategy to minimize the sinergy resistance of chain value system development are respectivelly the strategy of involving the group of fishermen on products pricing (CE= 1,176 and P= 0,000, the strategy of involving the seller groups on products pricing (CE-PE=1,08, CE-PB= 0,766, CE EKS= 2,028 AND P= 0,000, and the strategy on guaranteeing flexible interaction between retailer and consumers (CE= 0,179 and p = 0,01.Keywords: tuna and tuna alike, interaction, tuna and tuna alike stakeholders, and value chain

  14. Development of a qPCR Method for the Identification and Quantification of Two Closely Related Tuna Species, Bigeye Tuna (Thunnus obesus) and Yellowfin Tuna (Thunnus albacares), in Canned Tuna.

    Science.gov (United States)

    Bojolly, Daline; Doyen, Périne; Le Fur, Bruno; Christaki, Urania; Verrez-Bagnis, Véronique; Grard, Thierry

    2017-02-01

    Bigeye tuna (Thunnus obesus) and yellowfin tuna (Thunnus albacares) are among the most widely used tuna species for canning purposes. Not only substitution but also mixing of tuna species is prohibited by the European regulation for canned tuna products. However, as juveniles of bigeye and yellowfin tunas are very difficult to distinguish, unintentional substitutions may occur during the canning process. In this study, two mitochondrial markers from NADH dehydrogenase subunit 2 and cytochrome c oxidase subunit II genes were used to identify bigeye tuna and yellowfin tuna, respectively, utilizing TaqMan qPCR methodology. Two different qPCR-based methods were developed to quantify the percentage of flesh of each species used for can processing. The first one was based on absolute quantification using standard curves realized with these two markers; the second one was founded on relative quantification with the universal 12S rRNA gene as the endogenous gene. On the basis of our results, we conclude that our methodology could be applied to authenticate these two closely related tuna species when used in a binary mix in tuna cans.

  15. The oxidative stability of chilled and frozen pilchards used as feed for captive southern bluefin tuna

    DEFF Research Database (Denmark)

    Fitz-Gerald, C.H.; Bremner, Allan

    1998-01-01

    . Vacuum packaging in a film of low permeability to oxygen was less effective than glazing and is not recommended due to cost. Pilchards in which oxidation had commenced before freezing continued to oxidise in frozen storage irrespective of whether they were glazed or vacuum packed. It was thus thoroughly...... demonstrated that the oil in the pilchards is very readily oxidised and careful handling, chilling, freezing and storage procedures need to be adopted to provide a product which is a nutritionally sound feed material for captive tuna. The demerit point scoring system was found to be a rapid evaluative...

  16. THE CRAFT LIKE A CULTURAL PRACTICE THAT CONFIGURES SOCIOCULTURAL PROCESSES: THE BASKETWORK IN THE TUNAS AT THE PRESENT TIME / LA ARTESANÍA COMO UNA PRÁCTICA CULTURAL CONFIGURADORA DE PROCESOS SOCIOCULTURALES: LA CESTERÍA EN LAS TUNAS EN LA ACTUALIDAD

    Directory of Open Access Journals (Sweden)

    Yumairys Diamela Candó Gámez

    2012-09-01

    Full Text Available The presence of the handmade movement in The Tunas is an important cultural fact in which has left condensing the conserved information and renovated in the cultural memoirs of the tunero, as long as it is identity that reflective characteristic that distinguish it and very authentic revealing knowledge and specific creation of a societal group. The years ninety represented a stagnation in the popular craft, it altered and it confused the true sense of the handmade production. The market entered as an element of deregulation of the qualities. He fell in the temptation of the commercialization without control. The art is confused with something easy, the legitimate and necessary commercialization of the productions with the marketing of the candongas, the artisan with the worker self-employed, the promoter with the merolico. The institucionalization of the culture starting from the revolutionary victory with the cultural politics's application in Cuba, together to the economic crisis in the decade of the 90 are sociocultural factors that condition to the craft as that it configures of sociocultural processes that are evidenced in the inherited cultural practices or institutionalized, remunerated (professionals or not remunerated (fans, as approaches that it configures of groups. The types of craft, the techniques, the ethnic composition of the representative groups, the professional formation, the origin (field, city, periphery, and composition of the groups for gender and number (grupal or singular they are indicative that allow to conceptualize the characteristics and types of the craft as cultural practice in The Tunas.

  17. Spatially explicit estimates of stock sizes, structure and biomass of herring and blue whiting, and catch data of bluefin tuna

    DEFF Research Database (Denmark)

    Huse, G.; MacKenzie, B. R.; Trenkel, V.

    2015-01-01

    The North Atlantic is a productive marine region which has supported important commercial fisheries for centuries. Many of these fisheries have exploited the pelagic species, including herring, blue whiting and tuna. Here we present data on the distribution of herring and blue whiting based on th...

  18. Habitat use, vertical and horizontal behaviour of Atlantic bluefin tuna (Thunnus thynnus) in the Northwestern Mediterranean Sea in relation to oceanographic conditions

    Science.gov (United States)

    Bauer, Robert Klaus; Fromentin, Jean-Marc; Demarcq, Hervé; Bonhommeau, Sylvain

    2017-07-01

    We investigated the habitat utilization, vertical and horizontal behaviour of Atlantic bluefin tuna Thunnus thynnus (ABFT) in relation to oceanographic conditions in the northwestern Mediterranean Sea, based on 36 pop-up archival tags and different environmental data sets. Tags were deployed on early mature ABFT (127-255 cm) between July and November in 2007-2014, on the shelf area off Marseille, France. The data obtained from these tags provided 1643 daily summaries of ABFT vertical behaviour over 8 years of tag deployment. Based on a hierarchical clustering of this data, we could identify four principle daily vertical behaviour types, representing surface (≦ 10 m) and subsurface (10-100 m) orientation, moderate (50-200 m) and deep (≧ 200 m) diving behaviour. These vertical behaviour types showed seasonal variations with partly opposing trends in their frequencies. Accordingly, ABFT were more surface orientated during summer, while moderate diving behaviour was more common during winter. Depth time series data further revealed inverted day-night patterns for both of these periods. Tagged ABFT frequented the surface waters more regularly during daytime and deeper waters during the night in summer, while the opposite pattern was found in winter. Seasonal changes in the vertical behaviour of ABFT were accompanied by simultaneous changes in environmental conditions (SST, chla, thermal stratification). Accordingly, surface orientation and moderate diving behaviour appeared to be triggered by the thermal stratification of the water column, though less pronounced than previously reported for ABFT in the North Atlantic, probably indicating adaptive vertical behaviour related to the availability of epipelagic food resources (anchovies and sardines). Deep diving behaviour was particularly frequent during months of high biological productivity (February-May), although one recovered tag showed periodic and unusual long spike dives during summer-autumn, in relation to

  19. Mapping Risks of Indonesian Tuna Supply Chain

    Science.gov (United States)

    Karningsih, P. D.; Anggrahini, D.; Kurniati, N.; Suef, M.; Fachrur, A. R.; Syahroni, N.

    2018-04-01

    Due to its high economic value and is produced by many countries, Tuna is considered as one of the world’s popular fish. Demand for Tuna species are very high and it usually sells in three form: fresh, frozen or canned. Competition in Tuna trading is challengin with the potential risk of price and supply fluctuations. With recent focus of Indonesia government that see the future of Indonesia civilization depend on the oceans and as the three biggest Tuna producing country, Ministry of Marine Affairs and Fisheries should ensure sustainability and competitiveness of Indonesian tuna. Therefore, there is a great need to develop a proper and effective strategy to manage potential risks in Indonesian Tuna supply chain. This paper is aimed at identifying and mapping potential Tuna supply chain risks and its interrelationships that would assist government in determining proper strategies to manage Indonesian Tuna. A framework for identifying Tuna supply chain risks is proposed. Generic risk structure of Supply Chain Risk Identification System is adopted and modified to match with particular object, which is Indonesian Tuna. The proposed model consists of hierarchical and causal structure that encompass potential risks of Tuna supply chain operations from fishing, trading, processing and distribution. The causal structure consist of risk events and its risk agents which is the cause of risk events. To ensure the root cause of risk events are identified properly, five why’s analysis is utilized to obtain risk agents. This proposed model also captures risk interrelationship between internal and external environment of Tuna supply chain. Preliminary result of this study identifies 15 risk events and 13 risk factors on fishing and trading operations and maps their interrelationships.

  20. Governance innovation networks for sustainable tuna

    NARCIS (Netherlands)

    Miller, A.M.M.

    2014-01-01

    Governance Innovation Networks for Sustainable Tuna

    Alice M.M. Miller

    Tuna fisheries are among the most highly capitalised and valuable fisheries in the world and their exploitation will continue for the foreseeable future. This means the sustainability of tuna

  1. Production of aspartic peptidases by Aspergillus spp. using tuna ...

    African Journals Online (AJOL)

    The production of extracellular aspartic peptidase by the fungi Aspergillus niger and Aspergillus awamori was carried out in a shake flask and in stirred tank submerged fermentations using tuna cooked wastewater, an industrial effluent, as nitrogen source for culture medium. In stirred tank fermentation, biomass production ...

  2. Karakteristik Ikan Tuna sirip biru selatan (Thunnus maccoyii Hasil Tangkapan Kapal Rawai Tuna yang didaratkan di Pelabuhan Benoa

    Directory of Open Access Journals (Sweden)

    I Gede Adi Swastana

    2016-07-01

    Full Text Available Southern bluefin tuna (SBT is scientifically known Thunnus maccoyii, and just live in the southern hemisphere. SBT fish classified as the most exploited tuna fish in the southeastern part of the Indian Ocean, so it is protected by the International Union for the Conservation of Nature (IUCN. The aim of this study is too collected of SBT fish caught during January which is the peak of SBT landing in Benoa port. The study was conducted base on data sampling, observation and interviews on 33 ships were landing SBT fish during January 2016. Based on observations from 33 vessels, we found that the total of SBT fish that landed in Benoa port during January 2016 is 251 fresh fish and 366 frozen fish. However just 251 SBT fresh fish were sampled, and the result indicated the fresh SBT fish is dominated by weigh between 61-70 kg with number 61 fish with a total weight of 19.28 tonne. The SBT were caught dominated by fish that has FL (fork lenght ranging between 151-160 cm with number 69 fish. While the smallest SBT range between 131-140 cm with the number of 5 fish. These results indicate that SBT fish caught in the Souetheast Indian Ocean during January 2016 is generaly relative small fish (130–160 cm FL with a number of 163 fish and mature SBT fish (FL > 162 cm with a number of 88 and young SBT (FL < 130 cm with a number of 5 fish. Based on morphometric analysis, eyeball diameter of SBT range 6-8 cm, the length lateral head from the tip of the mouth to behind the gill cover ranging 46-54 cm, the length of body from the early dorsal or in front of the first dorsal fin ranging between 38-47 cm, the height of fish at the end of the anal or at the end ranging between 34-39 cm, the high of caudal peduncle ranging between 4-5 cm, th length of the dorsal base of the tail fish ranging between 53-63 cm, and the length of the base of tail anal from anal to tail ranging between 41-51 cm. Base on size and age composition, it is shown that the growth of SBT

  3. Karakteristik Ikan Tuna sirip biru selatan (Thunnus maccoyii Hasil Tangkapan Kapal Rawai Tuna yang didaratkan di Pelabuhan Benoa

    Directory of Open Access Journals (Sweden)

    I Gede Adi Swastana

    2016-12-01

    Full Text Available Southern bluefin tuna (SBT is scientifically known Thunnus maccoyii, and just live in the southern hemisphere. SBT fish classified as the most exploited tuna fish in the southeastern part of the Indian Ocean, so it is protected by the International Union for the Conservation of Nature (IUCN. The aim of this study is too collected of SBT fish caught during January which is the peak of SBT landing in Benoa port. The study was conducted base on data sampling, observation and interviews on 33 ships were landing SBT fish during January 2016. Based on observations from 33 vessels, we found that the total of SBT fish that landed in Benoa port during January 2016 is 251 fresh fish and 366 frozen fish. However just 251 SBT fresh fish were sampled, and the result indicated the fresh SBT fish is dominated by weigh between 61-70 kg with number 61 fish with a total weight of 19.28 tonne. The SBT were caught dominated by fish that has FL (fork lenght ranging between 151-160 cm with number 69 fish. While the smallest SBT range between 131-140 cm with the number of 5 fish. These results indicate that SBT fish caught in the Souetheast Indian Ocean during January 2016 is generaly relative small fish (130–160 cm FL with a number of 163 fish and mature SBT fish (FL > 162 cm with a number of 88 and young SBT (FL < 130 cm with a number of 5 fish. Based on morphometric analysis, eyeball diameter of SBT range 6-8 cm, the length lateral head from the tip of the mouth to behind the gill cover ranging 46-54 cm, the length of body from the early dorsal or in front of the first dorsal fin ranging between 38-47 cm, the height of fish at the end of the anal or at the end ranging between 34-39 cm, the high of caudal peduncle ranging between 4-5 cm, th length of the dorsal base of the tail fish ranging between 53-63 cm, and the length of the base of tail anal from anal to tail ranging between 41-51 cm. Base on size and age composition, it is shown that the growth of SBT

  4. A spatial ecosystem and populations dynamics model (SEAPODYM) Modeling of tuna and tuna-like populations

    Science.gov (United States)

    Lehodey, Patrick; Senina, Inna; Murtugudde, Raghu

    2008-09-01

    An enhanced version of the spatial ecosystem and population dynamics model SEAPODYM is presented to describe spatial dynamics of tuna and tuna-like species in the Pacific Ocean at monthly resolution over 1° grid-boxes. The simulations are driven by a bio-physical environment predicted from a coupled ocean physical-biogeochemical model. This new version of SEAPODYM includes expanded definitions of habitat indices, movements, and natural mortality based on empirical evidences. A thermal habitat of tuna species is derived from an individual heat budget model. The feeding habitat is computed according to the accessibility of tuna predator cohorts to different vertically migrating and non-migrating micronekton (mid-trophic) functional groups. The spawning habitat is based on temperature and the coincidence of spawning fish with presence or absence of predators and food for larvae. The successful larval recruitment is linked to spawning stock biomass. Larvae drift with currents, while immature and adult tuna can move of their own volition, in addition to being advected by currents. A food requirement index is computed to adjust locally the natural mortality of cohorts based on food demand and accessibility to available forage components. Together these mechanisms induce bottom-up and top-down effects, and intra- (i.e. between cohorts) and inter-species interactions. The model is now fully operational for running multi-species, multi-fisheries simulations, and the structure of the model allows a validation from multiple data sources. An application with two tuna species showing different biological characteristics, skipjack ( Katsuwonus pelamis) and bigeye ( Thunnus obesus), is presented to illustrate the capacity of the model to capture many important features of spatial dynamics of these two different tuna species in the Pacific Ocean. The actual validation is presented in a companion paper describing the approach to have a rigorous mathematical parameter optimization

  5. pisces: Sparidae

    African Journals Online (AJOL)

    items, which combines the modified points method and the frequency of occurrence ... Studies on the feeding and breeding biology of D. sargus capensis to date refer to ...... habits of albacore, bluefin tuna, and bonito in California water. Calif.

  6. Potential impacts of the Deepwater Horizon oil spill on large pelagic fishes

    Science.gov (United States)

    Frias-Torres, Sarrah; Bostater, Charles R., Jr.

    2011-11-01

    Biogeographical analyses provide insights on how the Deepwater Horizon oil spill impacted large pelagic fishes. We georeferenced historical ichthyoplankton surveys and published literature to map the spawning and larval areas of bluefin tuna, swordfish, blue marlin and whale shark sightings in the Gulf of Mexico with daily satellite-derived images detecting surface oil. The oil spill covered critical areas used by large pelagic fishes. Surface oil was detected in 100% of the northernmost whale shark sightings, in 32.8 % of the bluefin tuna spawning area and 38 % of the blue marlin larval area. No surface oil was detected in the swordfish spawning and larval area. Our study likely underestimates the extend of the oil spill due to satellite sensors detecting only the upper euphotic zone and the use of dispersants altering crude oil density, but provides a previously unknown spatio-temporal analysis.

  7. Global integration of European tuna markets

    Science.gov (United States)

    Jiménez-Toribio, Ramòn; Guillotreau, Patrice; Mongruel, Rémi

    2010-07-01

    This paper evaluates the degree of integration between the world market and the major European marketplaces of frozen and canned tuna through both vertical and horizontal price relationships. Spatial linkages are investigated horizontally in order to estimate the connection between the European market and the world-wide market on the primary stage of the value chain. One of the key results is the high level of market integration at the ex-vessel stage, and the price leadership of yellowfin tuna over skipjack tuna. The same approach is applied at the ex-factory level. Basically, the European market for final goods appears to be segmented between the Northern countries consuming low-priced canned skipjack tuna imported from Asia (mainly Thailand) and the Southern countries (Italy, Spain) processing and importing yellowfin-based products sold at higher prices. France appears to be an intermediate market where both products are consumed. The former market is found to be well integrated to the world market and can be considered to be competitive, but there is a suspicion of market power being exercised on the latter. Price relationships are therefore tested vertically between the price of frozen tuna paid by the canneries and the price of canned fish in both Italy and France. The two species show an opposite pattern in prices transmission along the value chain: price changes along the chain are far better transmitted for the “global” skipjack tuna than for the more “European” yellowfin tuna. The results are discussed, along with their implications for the fishing industry.

  8. UNIVERSITAS: A PROJECT WITH A HUMANIST AND INTEGRAL CULTURE APPROACH IN LAS TUNAS UNIVERSITY CENTER / UNIVERSITAS: PROYECTO POR UN PERFIL HUMANISTA Y DE CULTURA INTEGRAL EN EL CENTRO UNIVERSITARIO DE LAS TUNAS

    Directory of Open Access Journals (Sweden)

    Rafaela Macías Reyes

    2010-10-01

    Full Text Available UNIVERSITAS is a project of sociocultural transformation in Las Tunas university center, with the aim to impel the development of the integral culture in the university community. The knowledge and deepening in the needs, interests, hoping, ways of thinking and acting; in an analysis of the reality, ease the elaboration of the project; which enriches the cultural spectrum of the university community. It is supported by a body of theoretical and methodological budget. Its system of actions is based on newness ideas bind to mechanism of supervisory as: the coordinator group of the project, the orientation bureau, and at the same time the functioning of fixed spaces as: the university theater, the room for exhibitions, Univideo, student’ house, ropes, voices, university and creators, a date with craftsman, dance and music.

  9. Addition of different tuna meal levels to pizza dough

    Directory of Open Access Journals (Sweden)

    Daniel Abreu Vasconcelos Campelo

    Full Text Available Abstract The aim of this study was to develop pizza dough with different levels of tuna meal (Tunnus spp.. In order to produce tuna meal, tuna torsos without fins were used, cooked for 1 hour, pressed, milled and dehydrated for 24 hours at 60 °C. Pizza dough was produced without (0% or with the addition of 5, 10, 15 and 20% of tuna meal, calculated based on the quantity of wheat flour. The tuna meal and different pizza pastries were analyzed for moisture content, crude protein, total lipids, ash, carbohydrates, caloric value and fatty acid profiles. Microbiological and sensory analyses were also carried out on the pizza pastries. The increasing addition of tuna meal resulted in gains in the crude protein (10.89 to 18.94%, total lipid (4.63 to 5.89% and ash (2.54 to 3.54% contents of the pizza pastries, not influencing the moisture content or caloric value. The inclusion of tuna meal linearly increased the quantity of n-3 series fatty acids in the pizza pastry, from 1.56 to 5.93 g/kg with the addition of 20% tuna meal. The ratio between the polyunsaturated and saturated fatty acids in the tuna meal and pizza pastries varied from 1.21 to 1.85. The microbiological analyses showed that the pizza pastries were produced under proper hygiene conditions. It was also observed that the addition of 5 to 20% of tuna meal to the pizza pastry did not significantly (p>0.05 alter the parameters of aroma, flavor, overall impression and purchase intention. It was therefore concluded that the addition of 5 to 20% tuna meal is effective in improving the nutritional value and fatty acid profile of pizza pastry.

  10. STOMACH CONTENT OF THREE TUNA SPECIES IN THE EASTERN INDIAN OCEAN

    Directory of Open Access Journals (Sweden)

    Bram Setyadji

    2012-12-01

    Full Text Available Feeding habit of tuna in Indian Ocean has been described around Sri Lanka, Indian Waters, Andaman Sea, western Indian Ocean (Seychelles Islands, western equatorial Indian Ocean whereas the tunas feeding habit study in Eastern Indian Oceanis merely in existence. The purpose of this study is to investigate the stomach content of three tuna species (bigeye tuna, yellowfin tuna, and skipjack tuna, apex predator in the southern part of Eastern Indian Ocean. The study was conducted in March – April, 2010 on the basis of catches of commercial tuna longline vessel based in Port of Benoa. A total of 53 individual fishes were collected, consisting of bigeye tuna (Thunnus obesus, yellowfin tuna (Thunnus albacores, and skipjack tuna (Katsuwonus pelamis. Stomach specimens were collected and analyzed.Analysis was conducted on the basis of index of preponderance method. The diet of the three tuna species showed fishes as the main diet (56–82%, followed by cephalopods (squids as the complementary diet (0–8%, and crustaceans (shrimps as the additional diet (2–4%. Fish prey composed of 6 families i.e. Alepisauridae, Bramidae, Carangidae, Clupeidae, Engraulidae, and Scombridae.

  11. KEBIJAKAN PENGELOLAAN HASIL TANGKAPAN SAMPINGAN TUNA LONGLINE DI SAMUDERA HINDIA

    Directory of Open Access Journals (Sweden)

    Budi Nugraha

    2013-11-01

    Full Text Available Tuna longline atau rawai tuna merupakan salah satu alat tangkap yang sangat efektif untuk menangkap tuna. Selain efektif alat tangkap ini juga merupakan alat tangkap yang selektif terhadap hasil tangkapannya. Namun demikian, alat tangkap ini masih menimbulkan suatu masalah dimana ikan hasil tangkapan yang diperoleh tidak semuanya merupakan hasil tangkapan utama (target species, ada sebagian yang merupakan hasil tangkapan sampingan (by-catch. Sebagian besar hasil tangkapan sampingan tuna longline memiliki nilai ekonomis, hanya jenis pari lumpur dan ikan naga yang tidak memiliki nilai ekonomis. Namun demikian, justru yang tidak memiliki nilai ekonomis mendominasi hasil tangkapan sampingan pada perikanan tuna longline. Oleh karena itu perlu adanya tindak lanjut dengan menyusun peraturan atau regulasi yang terkait dengan pengelolaan ikan hasil tangkapan sampingan dan pengelolaan yang benar terhadap hasil tangkapan tersebut beserta habitatnya agar terjaga kelestarian sumberdayanya dan juga tetap menjadi sumber pendapatan masyarakat.Tulisan ini membahas secara ringkas tentang isu hasil tangkapan sampingan pada perikanan tuna longline, komposisi jenisnya, pemanfaatannya dan kebijakannya. Tuna longline is one of the most effective fishing gears to catch tuna. In addition, this fishing gear is selective to catch tuna. However, this gear is still causing a problem where some species other than their target species were caught as by-catch. Most of by-catch species from the tuna longliners have an economic value, except pelagic stingrays and lancetfish. In fact, these by-catch species (non economical-valued species dominated the longline catch. Therefore, it is needed to develop rules or regulations related to the management of the fish by-products, and properly manage the fishing activities on these by-catch species and habitat preservation to preserve its resources and also remain as a source of income. This paper briefly discusses the issue of by

  12. Mercury in canned tuna: white versus light and temporal variation

    International Nuclear Information System (INIS)

    Burger, Joanna; Gochfeld, Michael

    2004-01-01

    There are abundant data and advisories for mercury levels in wild fish, but far fewer for commercial fish that compose a large majority of the fish most people eat. Until recently, relatively little attention has been devoted to examining mercury in canned tuna, despite its great importance in human diets. There is substantial media coverage of the benefits and risk from fish consumption, but few peer-reviewed data on canned tuna, the most commonly consumed fish in the United States. In this paper, we examine the levels of total mercury in canned tuna obtained from a New Jersey grocery store from 1998 to 2003, looking for temporal consistency within this data set and particularly for comparison with the Food and Drug Administration's 1991 study. We analyzed 168 cans individually for total mercury. All values are reported as parts per million (=μg/g) on a wet weight basis. In a subset of samples analyzed for total and inorganic mercury, the inorganic mercury was below detection levels; hence at least 89% of the mercury can be considered methylmercury. We found that white-style tuna had significantly more total mercury (mean 0.407 ppm) than light-style tuna (mean 0.118 ppm), presumably reflecting that 'white' tuna is albacore, a species relatively larger than the skipjack tuna, which is commonly available as 'light' or 'chunk light'. The maximum mercury in a can was 0.997 ppm, but 25% of white tuna samples exceeded 0.5 ppm. Data suggest a slight increase in levels since 1991, and mercury levels were significantly higher in 2001 than in other years. The mean level of mercury in white tuna (mean 0.407 ppm) was significantly higher than the mean value of 0.17 ppm currently used by the U.S. Food and Drug Administration (FDA) in its risk assessment and public information. There were no significant differences in mercury levels in tuna packed in oil compared to water. Draining contents had no effect on mercury levels, and the fluid, both oil and water, contained little

  13. Feeding Partitioning among Tuna Taken in Surface and Mid-water ...

    African Journals Online (AJOL)

    Crustaceans were the almost exclusive food source of surface-swimming bigeye tuna, with the stomatopod (Natosquilla investigatoris) being the sole prey item recorded in this category. The diet of deep-swimming yellowfin tuna was balanced between epipelagic fish, crustaceans and cephalopods. Bigeye tuna fed ...

  14. Exploring future scenarios for the global supply chain of tuna

    Science.gov (United States)

    Mullon, C.; Guillotreau, P.; Galbraith, E. D.; Fortilus, J.; Chaboud, C.; Bopp, L.; Aumont, O.; Kaplan, D.

    2017-06-01

    The abundance of tuna, an important top predator that ranges throughout tropical and subtropical oceans, is now largely determined by fishing activity. Fishing activity, in turn, is determined by the interaction of fish availability, fishing capacity, fishing costs and global markets for tuna products. In the face of overfishing, the continued sustainable supply of tuna is likely to require improved global governance, that would benefit from modeling frameworks capable of integrating market forces with the availability of fish in order to consider alternative future projections. Here we describe such a modeling framework, in which we develop several simple, contrasting scenarios for the development of the tuna supply chain in order to illustrate the utility of the approach for global evaluation of management strategies for tuna and other complex, stock-structured fisheries. The model includes multiple national and multi-national fishing fleets, canneries and fresh/frozen markets, and connects these to global consumers using a network of flows. The model is calibrated using recent data on fish catch, cannery and fresh/frozen production, and consumption. Scenarios explore the control on future outcomes in the global tuna fishery by representing, in a simple way, the effects of (1) climate change, (2) changes in the global demand for tuna, and (3) changes in the access to fishing grounds (marine reserves). The results emphasize the potential importance of increasing demand in provoking a global collapse, and suggest that controlling tuna production by limiting technical efficiency is a potential countermeasure. Finally we discuss the outcomes in terms of potential extensions of the scenario approach allowed by this global network model of the tuna supply chain.

  15. Development of functional canned and pouched tuna products added inulin for commercial production.

    Science.gov (United States)

    Rueangwatcharin, U; Wichienchot, S

    2015-08-01

    Four formulas of canned tuna in spring water and tuna in mayonnaise and pouched tuna in salad cream and tuna in thousand island cream with added inulin were developed for commercial production. The effects of the addition of a prebiotic (inulin, Orafti®-HP) on the color and sensory properties of these products were studied. For inulin concentrations studied (3, 5, 7 and 10 %, w/w) caused more intensed yellow and red colors. Hedonic sensory values of tuna packed in spring water and in mayonnaise showed no significant differences (p > 0.05) among products with different inulin addition levels (3, 5, 7 and 10 %, w/w) in terms of color, flavor, sweetness and overall characteristics. However, when packed in thousand island cream, significant differences (p < 0.05) in color and overall characteristics were found when inulin was added higher than 7 %. Tuna in salad cream showed significant differences (p < 0.05) in color, flavor, sweetness and overall characteristics at higher than 7 % inulin. The panelists showed acceptable overall liking scores at upto 7 % inulin of all tuna products. The thermal sterilization process resulted in approximately 20 % decrease in final inulin content. The calculated residual fructans of finished products at shelf life of 3 years were 3.01, 2.78, 2.90 and 2.84 % for tuna in spring water, tuna in mayonnaise, tuna in thousand island and tuna in salad cream, respectively. Considering formula cost in a commercial production and the recommended daily intake (RDI) of inulin in the finished product at end of shelf life (≥3 g/d), an addition of 5 % inulin for tuna in spring water and 7 % inulin for tuna in mayonnaise, tuna in thousand island and tuna in salad cream are recommended.

  16. Bluefin Tuna Life History (1972-1979)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Catch and size data for animals from which a collection of fish parts were done for life history studies. These samples will be used in comparison studies with more...

  17. GENETIC IDENTIFICATION FOR TUNA AND RAINBOW RUNNER CAPTURE IN NORTH BALI WATERS

    Directory of Open Access Journals (Sweden)

    Gusti Ngurah Permana

    2006-06-01

    Full Text Available Gondol Research Institute for Mariculture identification of tuna and rainbow runner was an objective in this current study. Samples of five species were collected from territorial water of North Bali. The method used in this study was allozyme electrophoresis. The results showed that buffer of CAPM-6 (citric acid aminoprophylmorpholine resulted in a sharp and clear banding pattern. The species could be differentiated in six diagnostic isozyme patterns Idh* (isocitrate dehydrogenase, 6Pgd* (6 phosphogluconate dehydrogenase, Gpi* (glucose phosphate isomerase, Mdh* (malate dehydrogenase, Est* (esterase, and Sp* (sarcoplasmic protein. All species were in Hardy-weinberg equilibrium. Heterozygosities of species were ranged from 0.00 to 0.099. Yellowfin tuna has the highest heterozigosity compared with the other species. Clustering samples according to pairs revealed that genetic distance of Bullet tuna (A. rochei and Eastern little tuna (E. affinis had small value (0.001. By contrast, the largest value was observed between yellowfin tuna, T. albacares and rainbow runner, E. bipunnulata (0.007. This value indicated that Bullet tuna (A. rochei and Eastern little tuna (E. affinis closed relation, while among yellowfin tuna, skipjack tuna, and rainbow runner, were separated phylogenically.

  18. Massive consumption of gelatinous plankton by Mediterranean apex predators.

    Directory of Open Access Journals (Sweden)

    Luis Cardona

    Full Text Available Stable isotopes of carbon and nitrogen were used to test the hypothesis that stomach content analysis has systematically overlooked the consumption of gelatinous zooplankton by pelagic mesopredators and apex predators. The results strongly supported a major role of gelatinous plankton in the diet of bluefin tuna (Thunnus thynnus, little tunny (Euthynnus alletteratus, spearfish (Tetrapturus belone and swordfish (Xiphias gladius. Loggerhead sea turtles (Caretta caretta in the oceanic stage and ocean sunfish (Mola mola also primarily relied on gelatinous zooplankton. In contrast, stable isotope ratios ruled out any relevant consumption of gelatinous plankton by bluefish (Pomatomus saltatrix, blue shark (Prionace glauca, leerfish (Lichia amia, bonito (Sarda sarda, striped dolphin (Stenella caerueloalba and loggerhead sea turtles (Caretta caretta in the neritic stage, all of which primarily relied on fish and squid. Fin whales (Balaenoptera physalus were confirmed as crustacean consumers. The ratios of stable isotopes in albacore (Thunnus alalunga, amberjack (Seriola dumerili, blue butterfish (Stromaeus fiatola, bullet tuna (Auxis rochei, dolphinfish (Coryphaena hyppurus, horse mackerel (Trachurus trachurus, mackerel (Scomber scombrus and pompano (Trachinotus ovatus were consistent with mixed diets revealed by stomach content analysis, including nekton and crustaceans, but the consumption of gelatinous plankton could not be ruled out completely. In conclusion, the jellyvorous guild in the Mediterranean integrates two specialists (ocean sunfish and loggerhead sea turtles in the oceanic stage and several opportunists (bluefin tuna, little tunny, spearfish, swordfish and, perhaps, blue butterfish, most of them with shrinking populations due to overfishing.

  19. Global pollution monitoring of butyltin compounds using skipjack tuna as a bioindicator

    International Nuclear Information System (INIS)

    Ueno, D.; Inoue, S.; Takahashi, S.; Ikeda, K.; Tanaka, H.; Subramanian, A.N.; Fillmann, G.; Lam, P.K.S.; Zheng, J.; Muchtar, M.; Prudente, M.; Chung, K.; Tanabe, S.

    2004-01-01

    Global pollution monitoring of butyltin in offshore water and open sea were conducted using skipjack tuna as a bioindicator. - Butyltin compounds (BTs) including mono- (MBT), di- (DBT), tri-butyltin (TBT) and total tin (ΣSn), were determined in the liver of skipjack tuna (Katsuwonus pelamis) collected from Asian offshore waters (off-Japan, the Japan Sea, off-Taiwan, the East China Sea, the South China Sea, off-Philippines, off-Indonesia, the Bay of Bengal), off-Seychelles, off-Brazil and open seas (the North Pacific). BTs were detected in all the skipjack tuna collected, suggesting widespread contamination of BTs even in offshore waters and open seas on a global scale. Considering specific accumulation, Sex-, body length- differences and migration of skipjack tuna did not seem to affect BT concentrations, indicating rapid reflection of the pollution levels in seawater where and when they were collected. Skipjack tuna is a suitable bioindicator for monitoring the global distribution of BTs in offshore waters and open seas. High concentrations of BTs were observed in skipjack tuna from offshore waters around Japan, a highly developed and industrialized region (up to 400 ng/g wet weight). Moreover skipjack tuna collected from offshore waters around Asian developing countries also revealed the levels comparable to those in Japan (up to 270 ng/g wet weight) which may be due to the recent improvement in economic status in Asian developing countries. High percentages (almost 90%) of BTs in total tin (ΣSn: sum of inorganic tin+organic tin) were found in the liver of skipjack tuna from offshore waters around Asian developing countries. This finding suggests that the anthropogenic BTs represent the major source of Sn accumulation in skipjack tuna from these regions

  20. Global pollution monitoring of butyltin compounds using skipjack tuna as a bioindicator

    Energy Technology Data Exchange (ETDEWEB)

    Ueno, D.; Inoue, S.; Takahashi, S.; Ikeda, K.; Tanaka, H.; Subramanian, A.N.; Fillmann, G.; Lam, P.K.S.; Zheng, J.; Muchtar, M.; Prudente, M.; Chung, K.; Tanabe, S

    2004-01-01

    Global pollution monitoring of butyltin in offshore water and open sea were conducted using skipjack tuna as a bioindicator. - Butyltin compounds (BTs) including mono- (MBT), di- (DBT), tri-butyltin (TBT) and total tin ({sigma}Sn), were determined in the liver of skipjack tuna (Katsuwonus pelamis) collected from Asian offshore waters (off-Japan, the Japan Sea, off-Taiwan, the East China Sea, the South China Sea, off-Philippines, off-Indonesia, the Bay of Bengal), off-Seychelles, off-Brazil and open seas (the North Pacific). BTs were detected in all the skipjack tuna collected, suggesting widespread contamination of BTs even in offshore waters and open seas on a global scale. Considering specific accumulation, Sex-, body length- differences and migration of skipjack tuna did not seem to affect BT concentrations, indicating rapid reflection of the pollution levels in seawater where and when they were collected. Skipjack tuna is a suitable bioindicator for monitoring the global distribution of BTs in offshore waters and open seas. High concentrations of BTs were observed in skipjack tuna from offshore waters around Japan, a highly developed and industrialized region (up to 400 ng/g wet weight). Moreover skipjack tuna collected from offshore waters around Asian developing countries also revealed the levels comparable to those in Japan (up to 270 ng/g wet weight) which may be due to the recent improvement in economic status in Asian developing countries. High percentages (almost 90%) of BTs in total tin ({sigma}Sn: sum of inorganic tin+organic tin) were found in the liver of skipjack tuna from offshore waters around Asian developing countries. This finding suggests that the anthropogenic BTs represent the major source of Sn accumulation in skipjack tuna from these regions.

  1. DISTRIBUSI SPASIAL DAN TEMPORAL IKAN TUNA MATA BESAR (Thunnus obesus DI SAMUDERA HINDIA BAGIAN TIMUR

    Directory of Open Access Journals (Sweden)

    Irwan Jatmiko

    2016-03-01

    Full Text Available Ikan tuna mata besar (Thunnus obesus merupakan salah satu hasil tangkapan yang penting bagi industri perikanan di Indonesia. Penelitian ini bertujuan untuk mengetahui distribusi spasial dan temporal ikan tuna mata besar di Samudera Hindia Bagian Timur. Pengumpulan data dilakukan oleh pemantau ilmiah (scientific observers pada kapal rawai tuna yang berbasis di Pelabuhan Benoa Bali, mulai Agustus 2005 hingga November 2013. Ikan tuna mata besar yang tertangkap sebanyak 5.340 ekor dan dari jumlah tersebut sebanyak 5.253 ekor diukur panjangnya. Distribusi spasial ikan tuna mata besar yang tertangkap rawai tuna Indonesia membentang dari 0°-33° LS dan 76°-128° BT. Persentase tertinggi ikan tuna mata besar dengan panjang >110 cm (Lm terdapat di sebelah barat Sumatera Barat dan di sebelah selatan Jawa Timur. Laju pancing menurut bulan penagkapan menunjukkan perbedaan yang nyata dengan laju pancing tertinggi terjadi pada Agustus sebesar 0,54 ekor/100 mata pancing. Nelayan direkomendasikan untuk melakukan operasi penangkapan di daerah dengan persentase ukuran panjang ikan tuna mata besar >110 cm (Lm tertinggi, sehingga species tersebut mempunyai kesempatan untuk melakukan pemijahan minimal sekali sepanjang hidupnya. Hal ini dimaksudkan untuk menjaga kelestarian sumberdaya ikan tuna mata besar di Samudera Hindia. Big eye tuna (Thunnus obesus is one of the important catch of the fishing industry in Indonesia. The study is aimed to investigate the spatial and temporal distribution of big eye tuna in the Eastern Indian Ocean. Data were collected by scientific observers on tuna long line vessels which were mainly based in Port of Benoa Bali from August 2005 to November 2013. Total number of big eye tuna caught were 5,340 individuals and as many as 5,253 of them were measured in length. The spatial distribution of  big eye tuna caught by Indonesia tuna long line are in the area between 0°-33° S and 76°-128° E. The highest percentage of big eye tuna with

  2. 50 CFR 216.95 - Official mark for “Dolphin-safe” tuna products.

    Science.gov (United States)

    2010-10-01

    ... 50 Wildlife and Fisheries 7 2010-10-01 2010-10-01 false Official mark for âDolphin-safeâ tuna... AND IMPORTING OF MARINE MAMMALS Dolphin Safe Tuna Labeling § 216.95 Official mark for “Dolphin-safe... Department of Commerce that may be used to label tuna products that meet the “dolphin-safe” standards set...

  3. Skoulekia erythrini n. sp (Digenea: Aporocotylidae): a parasite of Pagellus erythrinus (L.) (Perciformes: Sparidae) from the western Mediterranean with an amendment of the generic diagnosis

    Czech Academy of Sciences Publication Activity Database

    Palacios-Abella, J. F.; Georgieva, Simona; Mele, S.; Raga, J. A.; Isbert, W.; Kostadinova, Aneta; Montero, F. E.

    2017-01-01

    Roč. 94, č. 6 (2017), s. 669-688 ISSN 0165-5752 R&D Projects: GA ČR(CZ) GBP505/12/G112 Institutional support: RVO:60077344 Keywords : southern bluefin tuna * blood flukes digenea * trematoda aporocotylidae * life-cycle * maximum-likelihood * sequence alignment * seriola-dumerili * cardicola * paradeontacylix Subject RIV: GJ - Animal Vermins ; Diseases, Veterinary Medicine OBOR OECD: Veterinary science Impact factor: 1.181, year: 2016

  4. Skipjack tuna as a bioindicator of contamination by perfluorinated compounds in the oceans.

    Science.gov (United States)

    Hart, Kimberly; Kannan, Kurunthachalam; Tao, Lin; Takahashi, Shin; Tanabe, Shinsuke

    2008-09-15

    Perfluorinated chemicals (PFCs) have emerged as global environmental contaminants. Studies have reported the widespread occurrence of PFCs in biota from marine coastal waters and in remote polar regions. However, few studies have reported the distribution of PFCs in biota from offshore waters and open oceans. In this study, concentrations of nine PFCs were determined in the livers of 60 skipjack tuna (Katsuwonus pelamis) collected from offshore waters and the open ocean along the Pacific Rim, including the Sea of Japan, the East China Sea, the Indian Ocean, and the Western North Pacific Ocean, during 1997-1999. At least one of the nine PFCs was found in every tuna sample analyzed. Overall, perfluorooctanesulfonate (PFOS) and perfluoroundecanoic acid (PFUnDA) were the predominant compounds found in livers of tuna at concentrations of ocean locations, concentrations of PFUnDA were greater than the concentrations of PFOS. The profiles and concentrations of PFCs in tuna livers suggest that the sources in East Asia are dominated by long-chain perfluorocarboxylates, especially PFUnDA. High concentrations of PFUnDA in tuna may indicate a shift in sources of PFCs in East Asia. The spatial distribution of PFOS in skipjack tuna reflected the concentrations previously reported in seawater samples from the Pacific and Indian Oceans, suggesting that tuna are good bioindicators of pollution by PFOS. Despite its predominance in ocean waters, PFOA was rarely found in tuna livers, indicative of the low bioaccumulation potential of this compound. Our study establishes baseline concentrations of PFCs in skipjack tuna from the oceans of the Asia-Pacific region, enabling future temporal trend studies of PFCs in oceans.

  5. Perilaku Tuna Fungsi Auditor: Pengujian atas Karakteristik Personal dan Penilai Kinerja Auditor

    Directory of Open Access Journals (Sweden)

    Aprina Nugrahesthy Sulistya Hapsari

    2016-12-01

      Fenomena perilaku tuna fungsi yang dilakukan oleh auditor makin dianggap lazim di lingkup audit. Hubungan antara karakteristik personal, karakteristik non personal dan perilaku tuna fungsi menjadi sesuatu hal yang menarik untuk diteliti. Penelitian ini menguji hubungan antara karakteristik personal berupa locus of control, tingkat kinerja pribadi karyawan, komitmen organisasi dan turnover intention dan penilai kinerja auditor sebagai faktor diluar karakteristik personal terhadap penerimaan perilaku tuna fungsi dalam lingkup audit. Pengumpulan data dilakukan melalui kuisioner dari responden yaitu auditor di KAP Kota Semarang dan Surakarta dengan metode convenience sampling karena populasi auditor yang bekerja tidak diketahui dengan pasti. Analisis data dengan menggunakan Model Persamaan Struktural. Hasil dari pengujian hipotesis mengindikasikan bahwa tidak ada hubungan antara karakteristik personal dengan penerimaan perilaku tuna fungsi dalam ruang lingkup audit. Sementara itu di lain sisi terdapat hubungan antara penilai kinerja auditor dengan penerimaan perilaku tuna fungsi dalam ruang lingkup audit.

  6. Keragaman Spesies Ikan Tuna di Pasar Ikan Kedonganan Bali dengan Analisis Sekuen Kontrol Daerah Mitokondria DNA (SPECIES DIVERSITY OF TUNA FISH USING MITOCHONDRIAL DNA CONTROL REGION SEQUENCE ANALYSIS AT KEDONGANAN FISH MARKET

    Directory of Open Access Journals (Sweden)

    Daud Steven Triyomi Hariyanto

    2015-10-01

    Full Text Available Tuna is an export commodity which has very high economic value. However, some tuna speciesare threatened with extinction. The purpose of this study was to identify the tuna species that aresold in Kedonganan Fish Market. The research method was polymerase chain reaction technique(PCR using the marker sequence mitochondrial DNA control region. Samples were obtained fromthe Fish Market tuna Kedonganan, Kuta, Badung, Bali. The total number of samples are 28specimens. Sequence from each sample was obtained through sequencing techniques. Sequencesobtained were run in BLAST (Basic Local Alignment Search Tool and subsequently analyzed withMEGA 5 for species confirmation. Three species of tuna that are identified in the Kedonganan FishMarket is: Thunnus albacares, T. obesus, and Katsuwonus pelamis. All three species have highgenetic variation HD = 1. This study needed to be continued with more number of samples todetermine the species of tuna sold in Kedonganan Fish Market.

  7. Application of the Oxidation-Reduction Potential (ORP) for Pre-grading Tuna Freshness On-board

    Science.gov (United States)

    Cheevaporanapivat, Mongkol; Sakai, Hisaharu; Mine, Yuuji; Watanabe, Manabu; Suzuki, Toru

    Application of ORP as a rapid indicator for grading tuna's freshness on the ship was studied. The long line trawling process was used for catching the sample tuna in the South Pacific Ocean. All captured sample tuna were weighed, gender identified and investigated for their mortality, then measured ORP and K value. Three species of tuna were caught: blue marlin (Makaira mazara), yellow fin tuna (Thunnus albacares), and swordfish (Xiphia gladius). Most of the fish captured were male and they had been dead after picking onboard. The measured ORP values of blue marlin varied in the range of 0.295-0.362 Volt, with pH between 5.35-5.84. Both ORP and pH of swordfish was similar to that of blue marlin. But for yellow fin tuna, the ORP value was about the same as blue marlin while its pH was significantly higher. ORP value in all species tended to increase with pH of the fish meat decrease. It is interesting that ORP value of tuna increased in correlation with K value. These results suggested that ORP and pH change, which are measured in the short time, are the effective indicators for grading tuna's freshness on-board.

  8. Comparison of Mitochondrial Reactive Oxygen Species Production of Ectothermic and Endothermic Fish Muscle

    Directory of Open Access Journals (Sweden)

    Lilian Wiens

    2017-09-01

    Full Text Available Recently we demonstrated that the capacity of isolated muscle mitochondria to produce reactive oxygen species, measured as H2O2 efflux, is temperature-sensitive in isolated muscle mitochondria of ectothermic fish and the rat, a representative endothermic mammal. However, at physiological temperatures (15° and 37°C for the fish and rat, respectively, the fraction of total mitochondrial electron flux that generated H2O2, the fractional electron leak (FEL, was far lower in the rat than in fish. Those results suggested that the elevated body temperatures associated with endothermy may lead to a compensatory decrease in mitochondrial ROS production relative to respiratory capacity. To test this hypothesis we compare slow twitch (red muscle mitochondria from the endothermic Pacific bluefin tuna (Thunnus orientalis with mitochondria from three ectothermic fishes [rainbow trout (Oncorhynchus mykiss, common carp (Cyprinus carpio, and the lake sturgeon (Acipenser fulvescens] and the rat. At a common assay temperature (25°C rates of mitochondrial respiration and H2O2 efflux were similar in tuna and the other fishes. The thermal sensitivity of fish mitochondria was similar irrespective of ectothermy or endothermy. Comparing tuna to the rat at a common temperature, respiration rates were similar, or lower depending on mitochondrial substrates. FEL was not different across fish species at a common assay temperature (25°C but was markedly higher in fishes than in rat. Overall, endothermy and warming of Pacific Bluefin tuna red muscle may increase the potential for ROS production by muscle mitochondria but the evolution of endothermy in this species is not necessarily associated with a compensatory reduction of ROS production relative to the respiratory capacity of mitochondria.

  9. Penanganan penyu yang tertangkap rawai tuna di Samudera Hindia

    Directory of Open Access Journals (Sweden)

    Budi Nugraha

    2017-03-01

    Full Text Available Turtle is one of the vulnerable of megafauna and as a by-catch in tuna longline fisheries, however, management practices have not been done yet. This paper described the efforts to avoid the capture of turtles on the tuna longline fishery and its handling recommendation. It has been written based on the research results and observer programs of activities that have been implemented since 2005. It’s also including a literature review rules and regulations regarding the management of sea turtles. The record results during 2005 - 2014 conducted by an independent scientific board on tuna longline in the Indian Ocean with 72 times number of setting and 89,441number of hooks. There are 105 turtles caught, which are leatherback, olive ridley turtles, hawksbill, loggerhead sea turtles as well as the unknown green turtle where the current status of turtles in the Indian Ocean is in a state of vulnerable, endangered, critically even endangered. The olive ridley turtle, loggerhead and leatherback turtles are in a vulnerable status. While, the green turtles are in a state endangered and even hawksbill in a state extremely endangered. Policy measures for handling of turtles in tuna longline fishery needs to be taken in order to be implemented include the socialization of the use of intensified circle hooks and if necessary the government issued regulations regarding the use of circle hooks, the implementation of the placement of fishing monitoring (observer aboard the tuna longline in order to assist the skippers monitoring the catch of turtles and turtle handling training for the skippers and crew in order to hold the caught turtles can be handled directly on the boat to reduce the mortality turtles which can be released back into the sea alive. Penyu merupakan salah satu biota yang rawan punah dan sebagai hasil tangkapan sampingan pada perikanan rawai tuna dimana pengelolaannya belum banyak dilakukan. Makalah ini membahas tentang upaya bagaimana

  10. Hubungan Antara Body Image Dan Self-esteem Pada Dewasa Awal Tuna Daksa

    OpenAIRE

    Sari, Dahlia Nur Permata

    2012-01-01

    Penelitian ini meneliti mengenai pengaruh body image terhadap selfesteem pada dewasa awal tuna daksa. Hipotesis pada penelitian ini adalah adanya hubungan positif antara body image dan self-esteem pada dewasa awal tuna daksa. Semakin positif body image maka semakin tinggi self-esteem yang dimiliki, begitu juga sebaliknya, semakin negatif body image maka semakin rendah self-esteem yang dimiliki. Sampel penelitian sebanyak 30 dewasa awal tuna daksa yang memiliki cacat tubuh seteleh kelahiran. D...

  11. Estimating animal behaviour and residency from movement data

    DEFF Research Database (Denmark)

    Pedersen, Martin Wæver; Patterson, Toby Alexander; Thygesen, Uffe Høgsbro

    2011-01-01

    probability distribution of location and behavior at each point in time. With this, the behavioral state of the animal can be associated to regions in space, thus revealing migration corridors and residence areas. We demonstrate the inferential potential of the method by analyzing satellite-linked archival...... tag data from a southern bluefin tuna Thunnus maccoyii where longitudinal coordinates inferred from daylight are supplemented by latitudinal information in recorded sea surface temperatures....

  12. Effect of tuna skin gelatin-based coating enriched with seaweed extracts on the quality of tuna fillets during storage at 4 °C

    Directory of Open Access Journals (Sweden)

    Milene Vala

    2017-10-01

    Full Text Available Nowadays, consumers demand high quality food products with an extended shelf-life without chemical additives. Edible coatings (EC containing natural compounds are a promising preservation technology for raw seafood without compromising fresh-like appeal and nutritional content.The aim of this work was to evaluate the effect of Thunnus obesus skin gelatin-based EC containing Codium spp. or Fucus vesiculosus extracts on raw tuna preservation. Three gelatin-based EC (gelatin (5 % + glycerol (25 %; gelatin (5 % + Codium spp. (1 % + glycerol (25 %; gelatin (5 % + Fucus vesiculosus (1 % + glycerol (25 % were applied directly on the surface of tuna fillets. Functional properties of gelatin and gelatin-based EC containing seaweed extracts were also studied. The gelatin was extracted by an acid-swelling process in the presence/absence of pepsin, followed by subsequent heating/refrigeration, after a pre-treatment with NaOH. The type of acid, temperature and concentration of NaOH greatly influence the process yield. The higher extraction yield was achieved using acetic acid in the presence of pepsin by subsequent refrigeration, especially when skins were previously treated with NaOH (0.2 M. Tuna quality was assessed over 12 days of storage at 4 ± 1 °C in terms of chemical and microbial indices. Results showed that tuna skin gelatin-based EC avoids tuna deterioration. Microbial growth, assessed by total viable counts, and total volatile basic nitrogen were maintained below the maximum limits recommended, contrarily to the control. Additionally, the use of EC increased the stability of red colour during storage. 

  13. Shark predation on migrating adult american eels (Anguilla rostrata) in the Gulf of St. Lawrence

    DEFF Research Database (Denmark)

    Béguer-Pon, Mélanie; Benchetrit, José; Castonguay, Martin

    2012-01-01

    to identify the eel predators, we compared their vertical migratory behavior with those of satellite-tagged porbeagle shark and bluefin tuna, the only endothermic fishes occurring non-marginally in the Gulf of St. Lawrence. We accurately distinguished between tuna and shark by using the behavioral criteria....... Surprisingly, of the seven tags that successfully transmitted archived data, six were ingested by warm-gutted predators, as observed by a sudden increase in water temperature. Gut temperatures were in the range of 20 to 25°C--too cold for marine mammals but within the range of endothermic fish. In order...... generated by comparing the diving behavior of these two species with those of our unknown predators. Depth profile characteristics of most eel predators more closely resembled those of sharks than those of tuna. During the first days following tagging, all eels remained in surface waters and did not exhibit...

  14. Modelling the spatial behaviour of a tropical tuna purse seine fleet.

    Directory of Open Access Journals (Sweden)

    Tim K Davies

    Full Text Available Industrial tuna fisheries operate in the Indian, Atlantic and Pacific Oceans, but concerns over sustainability and environmental impacts of these fisheries have resulted in increased scrutiny of how they are managed. An important but often overlooked factor in the success or failure of tuna fisheries management is the behaviour of fishers and fishing fleets. Uncertainty in how a fishing fleet will respond to management or other influences can be reduced by anticipating fleet behaviour, although to date there has been little research directed at understanding and anticipating the human dimension of tuna fisheries. The aim of this study was to address gaps in knowledge of the behaviour of tuna fleets, using the Indian Ocean tropical tuna purse seine fishery as a case study. We use statistical modelling to examine the factors that influence the spatial behaviour of the purse seine fleet at broad spatiotemporal scales. This analysis reveals very high consistency between years in the use of seasonal fishing grounds by the fleet, as well as a forcing influence of biophysical ocean conditions on the distribution of fishing effort. These findings suggest strong inertia in the spatial behaviour of the fleet, which has important implications for predicting the response of the fleet to natural events or management measures (e.g., spatial closures.

  15. DAYA SAING EKSPOR TUNA KALENG INDONESIA DI UNI EROPA TAHUN 2003-2013

    Directory of Open Access Journals (Sweden)

    Umar Wahono

    2017-06-01

    Full Text Available Perbedaan tarif yang diberikan antara Indonesia yang lebih tinggi sebesar 20.5% dibandingkan dengan negara pesaing utamanya yang tergabung dalang Africa, Caribbean, Pasific (ACP Countries dengan pelayanan tarif impor hingga 0% ke pasar Uni Eropa (UE. Keadaan ini mampu menyebabkan menghilangnya distorsi perbedaan harga sesungguhnya yang seharusnya menjadi keuntungan lebih atas keunggulan komparatif yang dimiliki. Hal ini mampu melemahkan daya saing komoditi ekspor akibat dampak kenaikan harga terhadap tarif. Penelitian ini bertujuan untuk gambaran daya saing komoditas tuna kaleng Indonesia terhadap negara pesaingnya dipasar UE pada periode 2003-2013. Metode yang digunakan dalam penelitin ini adalah metode Revealed Comparative Advantage (RCA yang kemudian nilai RCA dikomparasikan tiap-tiap negara pengekspor utama tuna kaleng di pasar UE untuk melihat posisi daya saing relatifnya. Sedangkan untuk mendekomposisikan determinan pertumbuhan ekspor tuna kaleng Indonesia ke UE digunankan metode Constant Market Share (CMS. Hasil perhitungan nilai RCA tuna kaleng Indonesia periode 2003-2013 di pasar UE memiliki daya saing dengan rata-rata nilai RCA 4.27. Namun masih dibawah rata-rata nilai RCA negara ACP Countries. Perbedaan pelayanan tarif impor oleh UE untuk komoditas tuna kaleng Indonesia tidak berdampak terhadap penurunan daya saing. The difference between the rates given Indonesia which is higher by 20.5% compared to its main competitor countries that joined the mastermind Africa, Caribbean, Pacific (ACP Countries with service import tariffs to 0% to the European Union (EU. This situation is capable of causing the disappearance of the distortion of the true price difference should be more advantages over comparative advantage. It is capable of undermining the competitiveness of export commodities due to the impact of price increases on tariffs. This study aims to illustrate the competitiveness of commodities Indonesian canned tuna to the EU market of

  16. Radiation hydrolysate of tuna cooking juice with enhanced antioxidant properties

    International Nuclear Information System (INIS)

    Choi, Jong-il; Sung, Nak-Yun; Lee, Ju-Woon

    2012-01-01

    Tuna protein hydrolysates are of increasing interest because of their potential application as a source of bioactive peptides. Large amounts of tuna cooking juice with proteins and extracts are produced during the process of tuna canning, and these cooking juice wastes cause environmental problems. Therefore, in this study, cooking juice proteins were hydrolyzed by irradiation for their utilization as functional additives. The degree of hydrolysis of tuna cooking juice protein increased from 0% to 15.1% at the absorbed doses of 50 kGy. To investigate the antioxidant activity of the hydrolysate, it was performed the ferric reducing antioxidant power (FRAP) assay, and the lipid peroxidation inhibitory and superoxide radical scavenging activities were measured. The FRAP values increased from 1470 μM to 1930 μM and IC 50 on superoxide anion was decreased from 3.91 μg/mL to 1.29 μg/mL at 50 kGy. All of the antioxidant activities were increased in the hydrolysate, suggesting that radiation hydrolysis, which is a simple process that does not require an additive catalysts or an inactivation step, is a promising method for food and environmental industries. - Highlights: ► Radiation was applied for the hydrolysis of tuna cooking juice protein. ► The degree of hydrolysis were increased by irradiation and the antioxidant activity of hydrolysate was higher than protein. ► This result suggest that radiation is useful method for the hydrolysis of protein.

  17. 78 FR 33240 - International Fisheries; Pacific Tuna Fisheries; Fishing Restrictions in the Eastern Pacific Ocean

    Science.gov (United States)

    2013-06-04

    ... States, Vanuatu, and Venezuela. Bolivia and the Cook Islands are cooperating non-members. International... Pacific bluefin mortality. In addition, the Department of the Interior, Office of Environmental Policy and...

  18. Radiation hydrolysate of tuna cooking juice with enhanced antioxidant properties

    Science.gov (United States)

    Choi, Jong-il; Sung, Nak-Yun; Lee, Ju-Woon

    2012-08-01

    Tuna protein hydrolysates are of increasing interest because of their potential application as a source of bioactive peptides. Large amounts of tuna cooking juice with proteins and extracts are produced during the process of tuna canning, and these cooking juice wastes cause environmental problems. Therefore, in this study, cooking juice proteins were hydrolyzed by irradiation for their utilization as functional additives. The degree of hydrolysis of tuna cooking juice protein increased from 0% to 15.1% at the absorbed doses of 50 kGy. To investigate the antioxidant activity of the hydrolysate, it was performed the ferric reducing antioxidant power (FRAP) assay, and the lipid peroxidation inhibitory and superoxide radical scavenging activities were measured. The FRAP values increased from 1470 μM to 1930 μM and IC50 on superoxide anion was decreased from 3.91 μg/mL to 1.29 μg/mL at 50 kGy. All of the antioxidant activities were increased in the hydrolysate, suggesting that radiation hydrolysis, which is a simple process that does not require an additive catalysts or an inactivation step, is a promising method for food and environmental industries.

  19. /sup 137/Cs and /sup 40/K in the flesh of fish of the Indian Ocean and the Straits of Malacca

    Energy Technology Data Exchange (ETDEWEB)

    Lowe, B G [Link Systems Ltd., High Wycombe (UK)

    1979-06-01

    The flesh of fish obtained from fishing industries based in Penang was dried and analyses for /sup 137/Cs and /sup 40/K concentration by gamma-ray spectrometry. Results for tuna, bluefin, round scad, prawns and anchovy are listed. Values of /sup 137/Cs concentration in the larger fish were very similar, about 9pCi/wet kg. /sup 40/K values varied between 0.6 and 3.9 nCi/wet kg with an average of 3.1 +- 0.3 nCi/wet kg for tuna. Results are compared with those reported for fish caught in other areas. The highest value of /sup 137/Cs activity found represents less than 0.4% of the value determined for natural /sup 40/K.

  20. Vocalisation Repertoire of Female Bluefin Gurnard (Chelidonichthys kumu in Captivity: Sound Structure, Context and Vocal Activity.

    Directory of Open Access Journals (Sweden)

    Craig A Radford

    Full Text Available Fish vocalisation is often a major component of underwater soundscapes. Therefore, interpretation of these soundscapes requires an understanding of the vocalisation characteristics of common soniferous fish species. This study of captive female bluefin gurnard, Chelidonichthys kumu, aims to formally characterise their vocalisation sounds and daily pattern of sound production. Four types of sound were produced and characterised, twice as many as previously reported in this species. These sounds fit two aural categories; grunt and growl, the mean peak frequencies for which ranged between 129 to 215 Hz. This species vocalized throughout the 24 hour period at an average rate of (18.5 ± 2.0 sounds fish-1 h-1 with an increase in vocalization rate at dawn and dusk. Competitive feeding did not elevate vocalisation as has been found in other gurnard species. Bluefin gurnard are common in coastal waters of New Zealand, Australia and Japan and, given their vocalization rate, are likely to be significant contributors to ambient underwater soundscape in these areas.

  1. Discrimination of juvenile yellowfin (Thunnus albacares and bigeye (T. obesus Tunas using mitochondrial DNA control region and liver morphology.

    Directory of Open Access Journals (Sweden)

    Ivane R Pedrosa-Gerasmio

    Full Text Available Yellowfin tuna, Thunnus albacares (Bonnaterre, 1788 and bigeye tuna, Thunnus obesus (Lowe, 1839 are two of the most economically important tuna species in the world. However, identification of their juveniles, especially at sizes less than 40 cm, is very difficult, often leading to misidentification and miscalculation of their catch estimates. Here, we applied the mitochondrial DNA control region D-loop, a recently validated genetic marker used for identifying tuna species (Genus Thunnus, to discriminate juvenile tunas caught by purse seine and ringnet sets around fish aggregating devices (FADs off the Southern Iloilo Peninsula in Central Philippines. We checked individual identifications using the Neighbor-Joining Method and compared results with morphometric analyses and the liver phenotype. We tested 48 specimens ranging from 13 to 31 cm fork length. Morpho-meristic analyses suggested that 12 specimens (25% were bigeye tuna and 36 specimens (75% were yellowfin tuna. In contrast, the genetic and liver analyses both showed that 5 specimens (10% were bigeye tuna and 43 (90% yellowfin tuna. This suggests that misidentification can occur even with highly stringent morpho-meristic characters and that the mtDNA control region and liver phenotype are excellent markers to discriminate juveniles of yellowfin and bigeye tunas.

  2. Quality Changes of Light Flesh Tuna at Water of Tomini Bay, Gorontalo Province

    Directory of Open Access Journals (Sweden)

    Wila Rumina Nento

    2015-01-01

    Full Text Available Tuna is one of the mainstay fisheries commodities that involve many of the ordinary fishermen. The handling usually still not follows the principles of good handling that causing the poor quality as the result.The aims of this research were to analyze and to determine the quality of tuna meat (the abdominal wall, dorsal fin, and caudal fin. Raw material yellowfin tuna meat prepared for the light, the meat section of the abdominal wall, dorsal fin, and caudal fin. The result of organoleptic analysis showed that the tuna meat was above the minimum value for the criteria of fresh fish. The result of TVB analysis showed that the meat on the caudal fin had the highest value and significantly different with the other, but still exist on the safe limits and on the fresh category. For the result of analysis in histamine, it shown that at the fourth hour the meat at the dorsal fin had the histamine content which were above the minimum that have been recommended. For the result of analysis in peroxide number, it shown that the tuna meat did not sustain the fat damage until the fourth hour after the catching process. And for the result of analysis in TPC, it showed that at the fourth hour the tuna meat on the pectoral fin had the highest number of total colony and significantly different with the other.Keywords: handling, histamine, light flesh, microbiology, yellowfin

  3. Mercury in canned tuna marketed in Cartagena, Colombia, and estimation of human exposure.

    Science.gov (United States)

    Alcala-Orozco, Maria; Morillo-Garcia, Yenifer; Caballero-Gallardo, Karina; Olivero-Verbel, Jesus

    2017-12-01

    The presence of mercury in tuna is ubiquitous, so national authorities should guarantee food safety of canned tuna available on the market, according to legal regulations. The objective of this survey was to assess total mercury (T-Hg) levels in brands of canned tuna marketed in Cartagena, Colombia, and determine fish consumption-based risks after ingestion. For that purpose, 252 cans of tuna were collected, representing 6 brands (A-F), in 2 mediums (water and oil). Mean T-Hg levels were 0.66 ± 0.05 and 0.61 ± 0.05 µg g -1 wet weight, for water and oil, respectively. High T-Hg concentrations were measured in brands B and D. Only brands E and F guaranteed low risk for Hg-related health problems. According to Colombia's legislation, 15.5% of the samples exceeded the maximum level of 1.0 µg g -1 for mercury and 18.3% was higher than limits as recommended by Food and Agriculture Organization/World Health Organisation (0.5 µg g -1 ). It was concluded that consumption of canned tuna could represent a high risk for the Colombian population, particularly to vulnerable groups.

  4. Etiologi Penyebab Malformasi Tunas Ranting Kakao di Kulonprogo, DIY dan Segayung, Jawa Tengah

    Directory of Open Access Journals (Sweden)

    Susamto Somowiyarjo

    2014-12-01

    insektisida hasilnya tunas muda yang tumbuh berikutnya tidak menunjukan adanya gejala malformasi. Diduga bahwa malformasi pada tunas dan ranting tersebut disebabkan oleh racun yang ditularkan oleh serangga. Penelitian lebih lanjut untuk karakterisasi penyebab penyakit secara molekuler saat ini sedang dilakukan.

  5. Distinct Yellowfin Tuna (Thunnus albacares Stocks Detected in Western and Central Pacific Ocean (WCPO Using DNA Microsatellites.

    Directory of Open Access Journals (Sweden)

    Roselyn D Aguila

    Full Text Available The yellowfin tuna, Thunnus albacares (Bonnaterre, 1788, covers majority of the Philippines' tuna catch, one of the major fisheries commodities in the country. Due to its high economic importance sustainable management of these tunas has become an imperative measure to prevent stock depletion. Currently, the Philippine yellowfin tuna is believed to be part of a single stock of the greater WCPO though some reports suggest otherwise. This study therefore aims to establish the genetic stock structure of the said species in the Philippines as compared to Bismarck Sea, Papua New Guinea using nine (9 DNA microsatellite markers. DNA microsatellite data revealed significant genetic differentiation between the Philippine and Bismarck Sea, Papua New Guinea yellowfin tuna samples. (FST = 0.034, P = 0.016, which is further supported by multilocus distance matrix testing (PCoA and model-based clustering (STRUCTURE 2.2.With these findings, this study posits that the yellowfin tuna population in the Philippines is a separate stock from the Bismarck Sea population. These findings add evidence to the alternative hypothesis of having at least 2 subpopulations of yellowfin tuna in the WCPO and calls for additional scientific studies using other parameters to investigate this. Accurate population information is necessary in formulating a more appropriate management strategy for the sustainability of the yellowfin tuna not only in the Philippines but also in the WCPO.

  6. FLUKTUASI DAN KOMPOSISI HASIL TANGKAPAN TUNA NERITIK TERTANGKAP JARING INSANG DI PERAIRAN LAUT CINA SELATAN

    Directory of Open Access Journals (Sweden)

    Arief Wujdi

    2016-03-01

    Full Text Available Saat ini tuna neritik merupakan komoditas penting perikanan di Indonesia, namun ketersediaan data dan informasi hasil tangkapan jenis tuna ini masih tergolong kurang. Penelitian ini bertujuan untuk memperoleh informasi mengenai sebaran daerah penangkapan, fluktuasi hasil tangkapan tuna neritik yang tertangkap jaring insang yang beroperasi di Laut Cina Selatan. Pengumpulan data dilakukan melalui program enumerasi monitoring hasil tangkapan harian di Pemangkat pada tahun 2011-2012. Hasil menunjukkan daerah penangkapan tersebar di perairan Laut Cina Selatan pada koordinat 01°03’ LS-04°57’ LU; dan 104°65’-110°00’ BT. Hasil tangkapan jenis tuna neritik menunjukan variasi yang cenderung sama dimana puncak hasil tangkapan terjadi pada bulan Oktober dan November. Pola CPUE berfluktuasi dan cenderung mengalami peningkatan dan puncaknya terjadi pada bulan November 2011 dan 2012, yaitu 402,85 dan 444,57 kg/hari/trip. Secara statistik hasil tangkapan pada periode 2011-2012 tidak berbeda nyata (p<0,05. Komposisi hasil tangkapan bulanan jenis tuna neritik bervariasi berdasarkan atas spesies yang didominasi oleh Euthynnus affinis (49,7% diikuti dengan Thunnus tonggol (33,4%; Scomberomorus commerson (15,9%; dan Scomberomorus guttatus (1%. Kelimpahan Euthynnus affinis terjadi pada musim timur hingga musim peralihan 2 (Juni- November, sedangkan kelimpahan Thunnus tonggol terjadi pada musim barat (Januari-Februari. Nowadays, neritic tuna just become an important commodity Indonesia. However, the information about catch of tuna neritic species in Indonesia still quite lacks. This This study aims to obtain information about catch fluctuation, monthly catch per unit of effort, and catch composition of neritic tuna species caught by gill net operated in the South China Sea. Data was collected by daily catch monitoring program by enumerator in Pemangkat during period 2011-2012. The result showed that gillnetter fishing ground is scattered between 01°03

  7. CONCENTRATION AND RECOVERY OF PROTEIN FROM TUNA COOKING JUICE BY FORWARD OSMOSIS

    Directory of Open Access Journals (Sweden)

    KHONGNAKORN W.

    2016-07-01

    Full Text Available Tuna cooking processing plants generate large amount of cooking juice containing a significant content of protein. Recovery and concentrating process of this valuable compound together with a low energy consumption process are of interest regarding full utilization concept and green process approach. Forward osmosis (FO was employed in this work to recover and concentrate tuna cooking juice. FO process could increase the protein concentration up to 9% with an average permeate flux of 2.54 L/m2h. The permeate flux however tended to decrease as protein concentration increased due to the impact of osmotic pressure of the feed and fouling on the membrane surface. Since tuna cooking juice consists of protein and minerals, membrane analyses indicated that fouling was more severe compared to the fouling caused by standard bovine serum albumin pure protein. However, the presence of minerals rendered it a quicker and lower energy process by comparison. These results indicated that FO is a promising technique in the recovery and concentration of tuna cooking juice protein.

  8. Global trophic ecology of yellowfin, bigeye, and albacore tunas: Understanding predation on micronekton communities at ocean-basin scales

    Science.gov (United States)

    Duffy, Leanne M.; Kuhnert, Petra M.; Pethybridge, Heidi R.; Young, Jock W.; Olson, Robert J.; Logan, John M.; Goñi, Nicolas; Romanov, Evgeny; Allain, Valerie; Staudinger, Michelle D.; Abecassis, Melanie; Choy, C. Anela; Hobday, Alistair J.; Simier, Monique; Galván-Magaña, Felipe; Potier, Michel; Ménard, Frederic

    2017-06-01

    Predator-prey interactions for three commercially valuable tuna species: yellowfin (Thunnus albacares), bigeye (T. obesus), and albacore (T. alalunga), collected over a 40-year period from the Pacific, Indian, and Atlantic Oceans, were used to quantitatively assess broad, macro-scale trophic patterns in pelagic ecosystems. Analysis of over 14,000 tuna stomachs, using a modified classification tree approach, revealed for the first time the global expanse of pelagic predatory fish diet and global patterns of micronekton diversity. Ommastrephid squids were consistently one of the top prey groups by weight across all tuna species and in most ocean bodies. Interspecific differences in prey were apparent, with epipelagic scombrid and mesopelagic paralepidid fishes globally important for yellowfin and bigeye tunas, respectively, while vertically-migrating euphausiid crustaceans were important for albacore tuna in the Atlantic and Pacific Oceans. Diet diversity showed global and regional patterns among tuna species. In the central and western Pacific Ocean, characterized by low productivity, a high diversity of micronekton prey was detected while low prey diversity was evident in highly productive coastal waters where upwelling occurs. Spatial patterns of diet diversity were most variable in yellowfin and bigeye tunas while a latitudinal diversity gradient was observed with lower diversity in temperate regions for albacore tuna. Sea-surface temperature was a reasonable predictor of the diets of yellowfin and bigeye tunas, whereas chlorophyll-a was the best environmental predictor of albacore diet. These results suggest that the ongoing expansion of warmer, less productive waters in the world's oceans may alter foraging opportunities for tunas due to regional changes in prey abundances and compositions.

  9. JENIS, UKURAN DAN DAERAH PENANGKAPAN HIU THRESHER (FAMILI ALOPIIDAE YANG TERTANGKAP RAWAI TUNA DI SAMUDERA HINDIA

    Directory of Open Access Journals (Sweden)

    Agustinus Anung Widodo

    2016-03-01

    Full Text Available Sebagai anggota Indian Ocean Tuna Commision (IOTC Indonesia wajib mengadopsi isi Resolusi IOTC 10/12 yang mengatur pengelolaan sumberdaya ikan hiu thresher (famili Alopiidae. Secara spesifik Indonesia belum melaksanakan pengelolaan sumberdaya hiu thresher karena spesies tersebut belum mendapatkan perhatian serius. Tulisan ini bermaksud menyampaikan hasil penelitian tentang ikan hiu thresher (Famili Alopiidae yang tertangkap rawai tuna di Samudera Hindia berbasis di Cilacap. Data diperoleh dari kegiatan pengambilan contoh di pelabuhan tahun 2010, kegiatan observasi di atas kapal rawai tuna bulan Januari 2010 dan laporan statistik PPS Cilacap tahun 2006-2010. Hasil kajian menunjukkan bahwa: (a di perairan Indonesia ada dua spesies dari tiga spesies hiu thresher yang ada di dunia, yaitu hiu monyet atau pelagic thresher (Alopias pelagicus Nakamura 1935 dan hiu paitan atau bigeye thresher (A. superciliosus Lowe 1840. Satu spesies lainnya yang belum pernah ditemukan adalah thinfin thresher (A.vulpinus Bonnaterre1788.  Dilihat dari teknologi rawai tuna yang digunakan, daerah sebaran hiu thresher sama dengan tuna di Samudera Hindia, sehingga sulit untuk menghindari tidak tertangkapnya hiu thresher oleh rawai tuna. Jumlah dari jenis hiu monyet yang tertangkap rawai tuna di Samudera Hindia berkisar 0,1-0,6 % dan hiu paitan berkisar 0,1-1,3 % dari total tangkapan. Ukuran hiu thresher yang tertangkap rawai tuna umumnya ikan yang telah dewasa (berkisar 54-74% dan diduga telah mengalami pemijahan. Hampir semua bagian hiu thresher dimanfaatkan sebagai bahan pangan dan farmasi. Selain dipasarkan di dalam negeri, ikan hiu thresher juga diekspor terutama siripnya ke manca negara dan terbanyak ke China.   As a member of IOTC, Indonesia is obliged to implement all IOTC’s resolutions including resolution 10/12 on the conservation of thresher sharks (Family Alopiidae caught in association with fisheries in the IOTC area of competence. Indonsia has not

  10. Validation of the method spectrophotometer in the histamine determination in fresh tuna (Thunnus Tunna)

    International Nuclear Information System (INIS)

    Chacon Silva, F.

    1998-01-01

    The objective of this study was to validate the spectrophotometer method described by Bateman et al. (1994) for the histamine determination in fresh tuna (Thunnus Tunna) and to evaluate the histamine concentration in samples of fresh tuna. To fulfill the recently exposed objectives, the figures of merit were determined like they are it: recovery limits of detection, sensibility and repetitive of the method spectrophotometry and applied the analysis at twenty samples of fresh tuna for copy of the Metropolitan area and three sample like reference of fresh tuna stored 4 degree centigrade by 15 days. The histamine recovery you determines enriching seven ours of fresh tuna with histamine to two levels different 0.613 mg/L and 2.21 mg/L. three samples were left without enriching and you subtract the average to the native histamine. You determines the one it limits of detection using the standard deviation to three levels of concentration of histamine 1.37 mg/L, 2.22 mg/L and 3.22 mg/L, the minimum quantity of hi stamina that you can determine for the method spectrophotometry settling down. The repetitive you determines using the standard deviation for 100 among the average of the histamine values, in seven you replies independent of the same sample. You determines the histamine content, in the fresh tuna Thunnus Tunna of the expends of the Metropolitan Area and in samples of reference stored 4 degrees centigrade by 15 days [es

  11. Evaluation of the proximate quality of the combination of Tuna (Thunnus albacares) and white oyster mushroom (Pleurotus ostreatus) nuggets

    Science.gov (United States)

    Yufidasari, H. S.; Prihanto, A. A.; Nurdiani, R.; Jaziri, A. A.

    2018-04-01

    Nugget is a processed meat product which has great market demand but need variations to increase its nutritional content. Tuna is rich in omega-3 protein, vitamins, and minerals. White oyster mushrooms have high nutritional content which are about 23-33% protein, 36-68 % carbohydrates and 12-22 % amino acids. The purpose of this research is to evaluate the chemical quality of Tuna nugget (Thunnus albacores) with combination of white oyster mushroom (Pleurotus ostreatus). Complete Randomized Design (RAL) with parameters of Tuna and white oyster mushroom formulation, TJ1 (70 % Tuna: 30 % white oyster mushroom), TJ2 (50 % Tuna: 50 % white oyster mushroom), TJ3 (30 % Tuna: 70 % white oyster mushroom), and Control or K Treatment (100 % Tuna) is used. Results of Tuna nuggets with white oyster mushroom combination showed the highest value of water content in TJ3 50.14 %, protein K 19.6 %, fat TJ3 22.98 %, ash K 3.99 % and 2.47 % crude fiber. From these results, there is a need for further research on fat, ash and coarse fiber content that is used in the manufacture of fish nuggets combined with oyster mushrooms because it failed to meet Indonesian National Standard (SNI).

  12. Mercury in tunas and blue marlin in the North Pacific Ocean.

    Science.gov (United States)

    Drevnick, Paul E; Brooks, Barbara A

    2017-05-01

    Models and data from the North Pacific Ocean indicate that mercury concentrations in water and biota are increasing in response to (global or hemispheric) anthropogenic mercury releases. In the present study, we provide an updated record of mercury in yellowfin tuna (Thunnus albacares) caught near Hawaii that confirms an earlier conclusion that mercury concentrations in these fish are increasing at a rate similar to that observed in waters shallower than 1000 m. We also compiled and reanalyzed data from bigeye tuna (Thunnus obesus) and blue marlin (Makaira nigricans) caught near Hawaii in the 1970s and 2000s. Increases in mercury concentrations in bigeye tuna are consistent with the trend found in yellowfin tuna, in both timing and magnitude. The data available for blue marlin do not allow for a fair comparison among years, because mercury concentrations differ between sexes for this species, and sex was identified (or reported) in only 3 of 7 studies. Also, mercury concentrations in blue marlin may be insensitive to modest changes in mercury exposure, because this species appears to have the ability to detoxify mercury. The North Pacific Ocean is a region of both relatively high rates of atmospheric mercury deposition and capture fisheries production. Other data sets that allow temporal comparisons in mercury concentrations, such as pacific cod (Gadus macrocephalus) in Alaskan waters and albacore tuna (Thunnus alalunga) off the US Pacific coast, should be explored further, to aid in understanding human health and ecological risks and to develop additional baseline knowledge for assessing changes in a region expected to respond strongly to reductions in anthropogenic mercury emissions. Environ Toxicol Chem 2017;36:1365-1374. © 2017 SETAC. © 2017 SETAC.

  13. EL FENÓMENO SOCIO RELIGIOSO EN LAS TUNAS. EL PENTECOSTALISMO Y SU INFLUENCIA PARA UNA CONCEPCIÓN IDENTITARIA

    Directory of Open Access Journals (Sweden)

    Enrique Antonio Lalana Torres

    2015-01-01

    Full Text Available Resumen El pentecostalismo como componente del campo religioso del territorio de Victoria de Las Tunas, los aportes a la identidad cultural son los hilos conductores de este trabajo. Comprende además un análisis del proceso de asentamiento y desarrollo del mismo a partir del análisis de las fuentes históricas y socioculturales. Su génesis primaria responde a condicionantes propias de las transformaciones de Europa Occidental durante el siglo XVI y, consciente o no sus fundadores promulgaron las bases para el correlato religioso del nuevo orden socio económico que se gestaba: el capitalismo. Las implicaciones a la identidad cultural en las regiones donde se asentaron y desarrollaron este tipo de denominaciones generaron comportamientos interesantes que constituyen un importante objeto de estudio para su mejor comprensión. ABSTRACT Pentecostalism as a component of the religious field of the territory of Victoria de Las Tunas, contributions to cultural identity are the threads of this work. It includes an analysis of the process of settlement and development of the same from the analysis of historical and sociocultural sources. Its primary genesis responds to own conditions of transformations of Western Europe during the sixteenth century and, consciously or not its founders enacted the basis for the religious correlate the new socioeconomic order that was brewing: capitalism. The implications for cultural identity in the regions where they settled and developed this kind of names generated interesting behaviors that constitute an important object of study for better understanding.

  14. Tuna Park Shopping Centre A comparative study of marketing communication tools

    OpenAIRE

    Wongrattanavichit, Teewin; Wang, Haiyan

    2008-01-01

    Date: 2008 June 08 Course: Master thesis Authors: Haiyan Wang, Teewin Wongrattanavichit Tutor: Jan Löwstedt Title: The study of marketing communication effectiveness and customer perception of Tuna Park shopping centre Introduction: The research about the effectiveness of marketing communication tool and customer perception was studied in Tuna Park shopping center, Eskilstuna. The marketing strategy and objective was to compare with the results from the questionnaire in order to measure the e...

  15. Precooking as a Control for Histamine Formation during the Processing of Tuna: An Industrial Process Validation.

    Science.gov (United States)

    Adams, Farzana; Nolte, Fred; Colton, James; De Beer, John; Weddig, Lisa

    2018-02-23

    An experiment to validate the precooking of tuna as a control for histamine formation was carried out at a commercial tuna factory in Fiji. Albacore tuna ( Thunnus alalunga) were brought on board long-line catcher vessels alive, immediately chilled but never frozen, and delivered to an on-shore facility within 3 to 13 days. These fish were then allowed to spoil at 25 to 30°C for 21 to 25 h to induce high levels of histamine (>50 ppm), as a simulation of "worst-case" postharvest conditions, and subsequently frozen. These spoiled fish later were thawed normally and then precooked at a commercial tuna processing facility to a target maximum core temperature of 60°C. These tuna were then held at ambient temperatures of 19 to 37°C for up to 30 h, and samples were collected every 6 h for histamine analysis. After precooking, no further histamine formation was observed for 12 to 18 h, indicating that a conservative minimum core temperature of 60°C pauses subsequent histamine formation for 12 to 18 h. Using the maximum core temperature of 60°C provided a challenge study to validate a recommended minimum core temperature of 60°C, and 12 to 18 h was sufficient to convert precooked tuna into frozen loins or canned tuna. This industrial-scale process validation study provides support at a high confidence level for the preventive histamine control associated with precooking. This study was conducted with tuna deliberately allowed to spoil to induce high concentrations of histamine and histamine-forming capacity and to fail standard organoleptic evaluations, and the critical limits for precooking were validated. Thus, these limits can be used in a hazard analysis critical control point plan in which precooking is identified as a critical control point.

  16. 77 FR 24669 - Atlantic Highly Migratory Species; Public Conference Call Regarding Recreational Yellowfin Tuna...

    Science.gov (United States)

    2012-04-25

    ... collection in the U.S. recreational yellowfin tuna fishery and the relationship to international yellowfin...-XB162 Atlantic Highly Migratory Species; Public Conference Call Regarding Recreational Yellowfin Tuna... Administration (NOAA), Commerce. ACTION: Notice of public conference call. SUMMARY: In order to better inform the...

  17. Are Consumers Willing to Pay More for Sustainable Products? A Study of Eco-Labeled Tuna Steak

    Directory of Open Access Journals (Sweden)

    Guzhen Zhou

    2016-05-01

    Full Text Available A high demand for seafood leads to overfishing, harms the long-term health of seafood stocks, and threatens environmental sustainability in oceans. Sustainability certification is one of the major sustainability movements and is known as eco-labeling. For instance, in the tuna industry, leading tuna brands have committed to protecting sea turtles by allowing the tracing of the source of their tuna “from catch to can.” This paper relies on an Internet survey on consumers from Kentucky conducted in July 2010. The survey investigates household-level tuna steak (sashimi grade consumption and examines consumer preferences for eco-labeling (“Certified Turtle Safe” (CTS in this study while mimicking individuals’ seafood procurement processes. A random parameter logit model is utilized, and willingness-to-pay measures are calculated based on model estimation results. It was found that respondents on average preferred turtle-safe-labeled tuna steak and were likely to pay more for it; however, they were less likely to purchase wild-caught species, and insignificant results were found for pre-frozen. Moreover, significant heterogeneities were found across individuals regarding tuna steak purchases. The findings indicate evidence of public support for environmental friendliness, particularly with regard to eco-labeling.

  18. 50 CFR 216.92 - Dolphin-safe requirements for tuna harvested in the ETP by large purse seine vessels.

    Science.gov (United States)

    2010-10-01

    ... 50 Wildlife and Fisheries 7 2010-10-01 2010-10-01 false Dolphin-safe requirements for tuna... MAMMALS REGULATIONS GOVERNING THE TAKING AND IMPORTING OF MARINE MAMMALS Dolphin Safe Tuna Labeling § 216.92 Dolphin-safe requirements for tuna harvested in the ETP by large purse seine vessels. (a) U.S...

  19. Aplikasi Sistem Informasi Geografis (SIG dan Penginderaan Jauh untuk Pemetaan Daerah Penangkapan Ikan Tuna Mata Besar di Selatan Jawa dan Bali

    Directory of Open Access Journals (Sweden)

    Kadek Bagus Padmaningrat

    2017-02-01

    Full Text Available Bigeye tuna is the dominant species of tuna caught in the territorial waters of the Indian Ocean and a productive tropical species which accounts for more than 10% of the total catch in the whole world. Distribution of bigeye tuna can be predicted through optimum temperature associated with the presence of bigeye tuna and distribution of chlorophyll-a is associated with the presence of small pelagic fish. The distribution of sea surface temperature and chlorophyll-a can be detected through remote sensing systems. The purpose of this study was to determine the relationship between sea surface temperature and chlorophyll-a by the number of bigeye tuna catches in the waters south of Java and Bali, and mapped the area catching bigeye tuna in the waters south of Java and Bali. The method used is a second order polynomial regression analysis to determine the effect of sea surface temperature and chlorophyll-a by the number of bigeye tuna catches as well as correlation analysis to determine the relationship of sea surface temperature and chlorophyll-a by the number of bigeye tuna catches. Sea surface temperature and chlorophyll-a is related to the number of bigeye tuna catches.  The results of the analysis showed a strong relationship between sea surface temperature and chlorophyll-a by the number of bigeye tuna catches. Bigeye tuna fishing grounds in the waters south of Java and Bali are in a position 12oS-15oS and 106°E-118°E.

  20. HASIL TANGKAP SAMPINGAN (HTS KAPAL RAWAI TUNA DI SAMUDERA HINDIA YANG BERBASIS DI BENOA

    Directory of Open Access Journals (Sweden)

    Bram Setyadji

    2016-05-01

    Full Text Available Hasil tangkap sampingan (HTS hampir terdapat pada semua jenis perikanan tangkap di Indonesia, termasuk pada perikanan rawai tuna di Samudera Hindia. Kebanyakan jenis HTS merupakan spesies yang tidak diinginkan atau jenis ikan target tapi ukurannya di bawah standar yang diinginkan (yuwana atau ikan muda dan pada kasus tertentu merupakan jenis ikan yang terancam keberadaannya (Endangered species. Penelitian ini bertujuan untuk memberikan informasi tentang komposisi hasil tangkap sampingan, laju pancing dan hubungan antara tuna dengan ikan yang berasosiasi dengannya pada area penangkapan yang sama. Pengamatan dilakukan pada bulan Maret – Juli 2010 dengan mengikuti kegiatan operasi penangkapan 2 kapal rawai tuna komersial yang berbasis di Pelabuhan Benoa. Hasil penelitian menunjukkan terdapat 18 jenis hasil tangkap sampingan yang  didominasi dari family Alepisauridae; ikan naga (Alepisaurus sp.; Gempylidae; ikan gindara (oilfish, dan Dasyatidae; pari lumpur (Dasyatis spp.. Jenis ikan lain adalah ikan paruh panjang (billfish, berbagai jenis cucut dan pari, ikan teleostei, serta penyu lekang. Kebanyakan dari hasil tangkap sampingan merupakan by-product yang mempunyai nilai ekonomis tinggi kecuali jenis ikan naga dan pari lumpur yang merupakan discard/buangan.   By-catch products are mostly available in every kind of capture fisheries in Indonesia including tuna longline fisheries in Indian Ocean. Most of these are unwanted species or juvenile target fish, sometimes endangered species. The research intended to reveal the by-catch from tuna fisheries and its relationship between tuna and its associate in the same fishing ground. Surveillance was conducted on March – July, 2010 by following two commercial tuna longliners vessel based in Port of Benoa. The result showed that there were 18 by-catch species that managed to be retrieved and indentified, family Alepisauridae; lancetfish (Alepisaurus sp.; Gempylidae; oilfish (Ruvettus pretiosus, and

  1. Cytochrome Oxidase I (COI) sequence conservation and variation patterns in the yellowfin and longtail tunas

    Digital Repository Service at National Institute of Oceanography (India)

    Kunal, S.P.; GirishKumar

    within and between tuna Thunnus species and its application to species identification. J Fish Biol. 58, 1646–1657. 8 Terol, J., Mascarell, R., Fernandez-Pedrosa, V., Perez-Alonso, M. (2002) Statistical validation of the identification of tuna...

  2. Otolith chemistry discriminates natal signatures of yellowfin tuna (Thunnus albacares) in the Atlantic Ocean

    Science.gov (United States)

    Kitchens, L. L.; Rooker, J. R.

    2016-02-01

    In this study, the otolith chemistry of young-of-the-year (YOY) yellowfin tuna (Thunnus albacares) was examined to determine whether chemical signatures are distinct across different putative spawning areas in the Atlantic Ocean. Yellowfin tuna is a highly migratory species that is currently managed as a single panmictic stock in the Atlantic Ocean; however, uncertainty remains regarding the population structure of yellowfin in this region, particularly concerning the degree of mixing between spawning populations. Analysis of naturally occurring chemical tracers in otoliths provides a valuable means to reconstruct a fish's environmental history and is thus a promising approach for delineating stock structure of Atlantic yellowfin tuna. YOY yellowfin tuna otoliths were collected from 5 locations in the Atlantic Ocean (Gulf of Mexico, SE Caribbean, Brazil, Cape Verde, and Gulf of Guinea) from 2013-2015 and trace element (Li, Mg, Mn, Co, Cu, Sr, Zn, and Ba) and stable isotope (δ13C and δ18O) analyses were conducted to investigate regional variation in otolith chemical composition. Results show significant differences among nursery areas in both trace element (MANOVA, p<0.001) and δ13C and δ18O signatures (ANOVA, p=0.017 and p=0.001, respectively). Particularly high spatial separation was observed based on eastern Atlantic (Gulf of Guinea + Cape Verde) and western Atlantic (Gulf of Mexico + Brazil + Martinique) nursery areas, indicating the approach has promise for distinguishing migrants displaying trans-ocean movement. These chemical signatures will be used to assign adult yellowfin tuna to their nursery of origin, ultimately providing an improved understanding of the stock structure and movement of yellowfin tuna in the Atlantic Ocean.

  3. Isolation of 137-Cs in tuna fish by ammonium phosphomolybdate (AMP)

    International Nuclear Information System (INIS)

    Yumiarti; Surtipanti, S.

    1988-01-01

    The isolation of 137-Cs in tuna fish (Neithunnus macroptenus) has been carried out using AMP. The energy of 137-Cs was measure using NaI(T1) detector connected to a Multi Channel Analyzer (MCA). In standard solution of 137-Cs with activity 160.74 and 80.37 pCi, the addition of 120 mg AMP and 7 hours of absorption time, caused 97% of 137-Cs in the solution was absorbed. The destruction of tuna fish was carried out using two methods namely by wet destruction with sulfuric acid, nitrit acid and hydrogen peroxid mixture and by wet destruction with hydrogen peroxide. The applications of this technique of tuna fish was carried out by spiking 137-Cs standard into the fish before being destructed. The recovery obtained from wet destruction with H2O2 was about 80%, while from destruction with acid mixtures and H2O2 was only about 47%. (authors). 3 refs, 3 tabs

  4. Effects of frozen storage on survival of Staphylococcus aureus and enterotoxin production in precooked tuna meat.

    Science.gov (United States)

    Wu, Xulei; Su, Yi-Cheng

    2014-08-01

    This study investigated the survival of Staphylococcus aureus in precooked tuna meat for producing canned products during frozen storage (-20 ± 2 °C) as well as its growth and enterotoxin production at 35 to 37 °C after the storage. Samples (50 ± 5 g) of precooked albacore (loin, chunk, and flake) and skipjack (chunk and flake) tuna were inoculated with 5 enterotoxin-producing strains of S. aureus at a level of approximately 3.5 log CFU/g and individually packed in a vacuum bag after 3 h incubation at 35 to 37 °C. Vacuum-packed samples were stored in a freezer (-20 ± 2 °C) for 4 wk. The frozen samples were then thawed in 37 °C circulating water for 2 h and incubated at 35 to 37 °C for 22 h. Populations of S. aureus in all precooked tuna samples decreased slightly (canned tuna within 6 to 8 h of thawing to avoid product spoilage and potential enterotoxin production by S. aureus in contaminated precooked tuna meat. © 2014 Institute of Food Technologists®

  5. Influence of physical damage and freezing on histamine concentration and microbiological quality of yellowfin tuna during processing

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    Gonzalo García-Tapia

    2013-09-01

    Full Text Available Yellowfin tuna has a high level of free histidine in their muscle, which can lead to histamine formation by microorganisms if temperature abuse occurs during handling and further processing. The objective of this study was to measure levels of histamine in damaged and undamaged thawed muscle to determine the effect of physical damage on the microbial count and histamine formation during the initial steps of canning processing and to isolate and identify the main histamine-forming microorganisms present in the flesh of yellowfin tuna. Total mesophilic and psicrophilic microorganisms were determined using the standard plate method. The presence of histamine-forming microorganisms was determined in a modified Niven's agar. Strains were further identified using the API 20E kit for enterobacteriaceae and Gram-negative bacilli. Physically damaged tuna did not show higher microbiological contamination than that of undamaged muscle tuna. The most active histamine-forming microorganism present in tuna flesh was Morganella morganii. Other decarboxylating microorganisms present were Enterobacter agglomerans and Enterobacter cloacae. Physical damage of tune during catching and handling did not increase the level of histamine or the amount of microorganisms present in tuna meat during frozen transportation, but they showed a higher risk of histamine-forming microorganism growth during processing.

  6. Autolytic degradation of skipjack tuna during heating as affected by initial quality and processing conditions.

    Science.gov (United States)

    Stagg, Nicola J; Amato, Penny M; Giesbrecht, Francis; Lanier, Tyre C

    2012-02-01

    Several factors were studied as affecting protein degradation and texture of skipjack tuna muscle following ambient pressure thermal processing (precooking). These included degree of mushy tuna syndrome (MTS) evidenced in the raw meat, raw meat pH, abusive thawing/holding, and precooking temperature/time. Slurries and intact pieces from frozen skipjack tuna, either tempered for 2 h or thawed and held at 25 °C for 22 h (abusive treatment) were heated at temperatures ranging from 40 to 80 °C for up to 2 h, and also at 90 °C for 1 h, with or without prior adjustment of pH to 5 or 7 to favor cathepsin or calpain activity, respectively. Proteolysis of precooked samples was monitored by Lowry assay and SDS-PAGE; cooked texture of intact meat was measured using a Kramer shear press and by sensory profile analysis. Proteolysis maximally occurred in slurries of skipjack tuna muscle that had been abusively stored (22 h at 25 °C) and adjusted to pH 5 prior to heating at 55 °C. Intact pieces of tuna abusively thawed/held for 22 h with subsequent heating at 55 °C also evidenced the most proteolysis and were the least firm in texture. Raw fish that evidenced higher severity of MTS when raw displayed higher levels of proteolysis prior to cooking, which were further increased after cooking at 55 °C. The kinetic data presented here can be used to optimize processing conditions for skipjack tuna canning to minimize textural degradation and optimize quality. © 2012 Institute of Food Technologists®

  7. Microbiological quality and safety of Skipjack tuna loins (Katsuwonus Pelamis intented for canning

    Directory of Open Access Journals (Sweden)

    Francesco Casalinuovo

    2018-03-01

    Full Text Available Tuna is a food widely consumed fresh and canned as well. After catching and filleting, a pre-cooking step is normally followed by freezing and shipping to canning industry as loins. The aim of this paper was to assess the microbiological quality and safety of tuna loins (50 samples imported by an Italian canned tuna producer from two different FAO fishing areas. Total bacterial count (TBC, Coliforms, Enterobacteriaceae, Escherichia coli, Listeria monocytogenes, Salmonella, Staphylococcus aureus, Vibrio parahaemolyticus, Vibrio cholera, pH measurement, S. aureus enterotoxin and histamine levels were evaluated. Significant differences were evidenced for TBC, Enterobacteriaceae, E. coli, Coliforms and pH between fishing areas. Staphylococcus aureus was detected in all the samples tested at 1 to 3 Log cfu/g; Staphylococcus warneri, S. saprophyticus, S. epidermidis, S. hominis, S. intermedius, S. vitulinus and S. sciuri were also identified. Listeria monocytogenes, Salmonella, Vibrio parahaemolyticus, Vibrio cholera and Staphylococcus aureus enterotoxin were not detected. Histamine ranged between 0 to 5 mg/kg. The tuna loins analysed in this paper have to be considered safe; staphylococci presence represents a possible concern and has to been taken in account when risk analysis is carried out.

  8. THE FORMATION OF THE LOCAL MUSICAL IDENTITY OF THE CITIZEN FROM LAS TUNAS / LA FORMACIÓN DE LA IDENTIDAD MUSICAL LOCAL DEL TUNERO

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    Elemnia Álvarez Merino

    2012-09-01

    Full Text Available The local music identity, part of the system of identity values, encourages contributing to training in the art instructors of the Bachelor of Education Art Instructor specialty. This paper aims to demonstrate how you can promote the teaching and learning of music from the study of the contents of the musical works of the town, musicians, composers, groups of small and large format and repertoire, Web Site by: Music and musicians from Las Tunas, made for this purpose and offers detailed information on major music events occurred in the town of Las Tunas, since the 40's to today where we find also images and sound with processed information form of hypertext, standard format for you to view information, also offers a proposal made by the authors in order to treat this content in the classroom and beyond, to achieve success in social and cultural transformations that allow to transmit their knowledge maintain its historical and cultural identity, improve the quality of their educational work taking into account the technical scientific advances, in the student to the historical and musical knowledge, experiences, experiential and cultural contributions they receive will contribute to the formation of the identity in the process of forming intentional, organized and systematic.

  9. Visualizing the Food-Web Effects of Fishing for Tunas in the Pacific Ocean

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    Jefferson T. Hinke

    2004-06-01

    Full Text Available We use food-web models to develop visualizations to compare and evaluate the interactions of tuna fisheries with their supporting food webs in the eastern tropical Pacific (ETP and the central north Pacific (CNP Oceans. In the ETP and CNP models, individual fisheries use slightly different food webs that are defined by the assemblage of targeted tuna species. Distinct energy pathways are required to support different tuna species and, consequently, the specific fisheries that target different tuna assemblages. These simulations suggest that catches of tunas, sharks, and billfishes have lowered the biomass of the upper trophic levels in both systems, whereas increases in intermediate and lower trophic level animals have accompanied the decline of top predators. Trade-offs between fishing and predation mortality rates that occur when multiple fisheries interact with their respective food webs may lead to smaller changes in biomass than if only the effect of a single fishery is considered. Historical simulations and hypothetical management scenarios further demonstrate that the effects of longline and purse seine fisheries have been strongest in upper trophic levels, but that lower trophic levels may respond more strongly to purse-seine fisheries. The apex predator guild has responded most strongly to longlining. Simulations of alternative management strategies that attempt to rebuild shark and billfish populations in each ecosystem reveal that (1 changes in longlining more effectively recover top predator populations than do changes in purse seining and (2 restrictions on both shallow-set longline gear and shark finning may do more to recover top predators than do simple reductions in fishing effort.

  10. 21 CFR 161.190 - Canned tuna.

    Science.gov (United States)

    2010-04-01

    .... (a) Identity. (1) Canned tuna is the food consisting of processed flesh of fish of the species... deemed to be safe if it is not a food additive as defined in section 201(s) of the Federal Food, Drug, and Cosmetic Act (the act), or if it is a food additive as so defined, it is used in conformity with...

  11. Convergent evolution in mechanical design of lamnid sharks and tunas.

    Science.gov (United States)

    Donley, Jeanine M; Sepulveda, Chugey A; Konstantinidis, Peter; Gemballa, Sven; Shadwick, Robert E

    2004-05-06

    The evolution of 'thunniform' body shapes in several different groups of vertebrates, including whales, ichthyosaurs and several species of large pelagic fishes supports the view that physical and hydromechanical demands provided important selection pressures to optimize body design for locomotion during vertebrate evolution. Recognition of morphological similarities between lamnid sharks (the most well known being the great white and the mako) and tunas has led to a general expectation that they also have converged in their functional design; however, no quantitative data exist on the mechanical performance of the locomotor system in lamnid sharks. Here we examine the swimming kinematics, in vivo muscle dynamics and functional morphology of the force-transmission system in a lamnid shark, and show that the evolutionary convergence in body shape and mechanical design between the distantly related lamnids and tunas is much more than skin deep; it extends to the depths of the myotendinous architecture and the mechanical basis for propulsive movements. We demonstrate that not only have lamnids and tunas converged to a much greater extent than previously known, but they have also developed morphological and functional adaptations in their locomotor systems that are unlike virtually all other fishes.

  12. Screening of biodiesel production from waste tuna oil (Thunnus sp.), seaweed Kappaphycus alvarezii and Gracilaria sp.

    Science.gov (United States)

    Alamsjah, Mochammad Amin; Abdillah, Annur Ahadi; Mustikawati, Hutami; Atari, Suci Dwi Purnawa

    2017-09-01

    Biodiesel has several advantages over solar. Compared to solar, biodiesel has more eco-friendly characteristic and produces lower greenhouse gas emissions. Biodiesel that is made from animal fats can be produced from fish oil, while other alternative sources from vegetable oils are seaweed Kappaphycus alvarezii and Gracilaria sp. Waste tuna oil (Thunnus sp.) in Indonesia is commonly a side product of tuna canning industries known as tuna precook oil; on the other hand, seaweed Gracilaria sp. and Kappaphycus alvarezii are commonly found in Indonesia's seas. Seaweed waste that was used in the present study was 100 kg and in wet condition, and the waste oil was 10 liter. The seaweed was extracted with soxhletation method that used n-hexane as the solvent. To produce biodiesel, trans esterification was performed on the seaweed oil that was obtained from the soxhletation process and waste tuna oil. Biodiesel manufactured from seaweed K. alvarezii obtained the best score in flash point, freezing point, and viscosity test. However, according to level of manufacturing efficiency, biodiesel from waste tuna oil is more efficient and relatively easier compared to biodiesel from waste K. alvarezii and Gracilaria sp.

  13. Detection of pelagic habitat hotspots for skipjack tuna in the Gulf of Bone-Flores Sea, southwestern Coral Triangle tuna, Indonesia.

    Science.gov (United States)

    Zainuddin, Mukti; Farhum, Aisjah; Safruddin, Safruddin; Selamat, Muhammad Banda; Sudirman, Sudirman; Nurdin, Nurjannah; Syamsuddin, Mega; Ridwan, Muhammad; Saitoh, Sei-Ichi

    2017-01-01

    Using remote sensing of sea surface temperature (SST), sea surface height anomaly (SSHA) and chlorophyll-a (Chl-a) together with catch data, we investigated the detection and persistence of important pelagic habitat hotspots for skipjack tuna in the Gulf of Bone-Flores Sea, Indonesia. We analyzed the data for the period between the northwest and southeast monsoon 2007-2011. A pelagic hotspot index was constructed from a model of multi-spectrum satellite-based oceanographic data in relation to skipjack fishing performance. Results showed that skipjack catch per unit efforts (CPUEs) increased significantly in areas of highest pelagic hotspot indices. The distribution and dynamics of habitat hotspots were detected by the synoptic measurements of SST, SSHA and Chl-a ranging from 29.5° to 31.5°C, from 2.5 to 12.5 cm and from 0.15 to 0.35 mg m-3, respectively. Total area of hotspots consistently peaked in May. Validation of skipjack CPUE predicted by our model against observed data from 2012 was highly significant. The key pelagic habitat corresponded with the Chl-a front, which could be related to the areas of relatively high prey abundance (enhanced feeding opportunity) for skipjack. We found that the area and persistence of the potential skipjack habitat hotspots for the 5 years were clearly identified by the 0.2 mg m-3 Chl-a isopleth, suggesting that the Chl-a front provides a key oceanographic indicator for global understanding on skipjack tuna habitat hotspots in the western tropical Pacific Ocean, especially within Coral Triangle tuna.

  14. Can Cooperative Management of Tuna Fisheries in the Western Pacific Solve the Growth Overfishing Problem?

    NARCIS (Netherlands)

    Bailey, M.L.; Rashid Sumaila, U.; Martell, S.J.D.

    2013-01-01

    Tuna fisheries in the western and central Pacific Ocean are important globally for both food and economic security. Yellowfin and bigeye tuna stocks in this region are declining, in part due to the juvenile bycatch of these species by the purse seine fishery using floating objects and fish

  15. 76 FR 283 - International Fisheries; Pacific Tuna Fisheries; Vessel Capacity Limit in the Purse Seine Fishery...

    Science.gov (United States)

    2011-01-04

    ... of implementing a capacity management regime, the United States chose to further limit its fleet... Inter-American Tropical Tuna Commission (IATTC) Resolution on the Capacity of the Tuna Fleet Operating.... industry consistent with the IATTC management framework. DATES: These regulations become effective on...

  16. MARICULTURE ON CROATIAN ISLANDS

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    Gordana Šarušić

    2000-09-01

    Full Text Available The first attempts of intensive mariculture in Croatia commenced at the very beginning of 1980’s. The mid-eighties brought an expansion of mariculture production, which has been continuously increasing. A few different marine organisms are intensively cultured - both fish and shellfish. Among them commercially most important and highly valued species are sea bass Dicentrarchus labrax and sea bream Sparus aurata. Mussel Mytilus galloprovincialis and oyster Ostrea edulis are the most important shellfish. Fish species such as dentex Dentex dentex, red sea bream Pagrus major and sheepshead bream Puntazzo puntazzo are reared too, but in a rather small quantities. Only recently the rearing, on-growing- of bluefin tuna Thunnus thynnus started in Croatia. The juveniles (70% are reared in a Croatian hatcheries, and 30% has to be imported mainly from Italy and France, due to a higher demand for this kind of culture among the small growers. Croatian part of Adriatic sea possesses a number of geomorfologicaly suitable sites and meteorological conditions which determined the choice - type - of intensive culture. All fish species are reared in a floating cages. The choice of cages i. e. semi off-shore or floating frames, size, rearing volume and design depend on the investors personal preference. The annual turnouf of a market size bass was about 600t and 300t bream in 1996., by 10 island farms which is 70% of total production in Croatia. Including other cultured fish species last year production was up to 1000t, and it™s being estimated to be about 1300t in the following year. The shellfish production on the islands is usually individual attempt of farmers, producing minor quantities mostly in polyculture. This production has bigger potential but it’s limited owing to the EU quality control regulations which do not allow the export, and by domestic market which has drastically decreased due to the collapse of tourism during the recent war. Almost 80

  17. Influences of oceanographic features on the distribution and abundance of yellowfin tuna, Thunnus albacares, larvae in the Gulf of Mexico

    Science.gov (United States)

    Cornic, M.; Rooker, J. R.

    2016-02-01

    Summer ichthyoplankton surveys were conducted in the northern Gulf of Mexico (NGoM) from 2007-2010 to characterize patterns of distribution and abundance of yellowfin tuna (Thunnus albacares) larvae in this region. Yellowfin tuna larvae were moderately abundant representing 9% of the overall Thunnus larvae collected (18765) and had a percent occurrence ranging from 13 to 57% among surveys. Interannual variations were detected with highest mean densities observed in 2009 (2.2 larvae per 1000m3) and the lowest mean densities observed in 2008 (0.7 larvae per 1000 m3). Generalized additive models were used to investigate the influence of oceanographic conditions on abundance of yellowfin tuna larvae. Increased densities were associated with high sea surface temperatures, positive sea surface heights, and intermediate salinities, revealing that these physicochemical conditions may be favorable for yellowfin tuna larvae. These results indicate that the NGoM is an important spawning and/or nursery habitat for yellowfin tuna and suggest that mesoscale features and physicochemical characteristics of water masses may impact distribution and abundance of yellowfin tuna larvae in the NGoM.

  18. Characterization of Fish Skin Gelatin Yellowfin Tuna

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    Mala Nurilmala

    2017-08-01

    Full Text Available Gelatin is one of the products which become a necessity for various industries, i.e. food and non-food industries. The application of gelatin has been increasing year by year in Indonesia. However, there is nogelatin industry in Indonesia so far. Thus, it is necessary to find an alternative source of gelatin, especially from fishery by products.Thus, the purpose of this research was to extract fish skin gelatin of yellowfin tuna with temperature treatments (55, 65 and 75oC. In addition, the properties of resulted gelatin were determined including yield, pH, gel strength, viscosity, functional groups, molecular weight profiles, and amino acid composition. The extraction at 75oC was chosen as the best result. The yield was 17%; pH 5.3; gel strength 1789.55 gf, viscosity 104.2 Cp, respectively. There was functional group amide A, I, II, dan III. SDS-PAGE showed β, α1 dan α2 bands for tuna skin gelatin. In addition, the main amino acids were glycine and proline.

  19. Genomic differentiation and demographic histories of Atlantic and Indo-Pacific yellowfin tuna (Thunnus albacares) populations.

    Science.gov (United States)

    Barth, J M I; Damerau, M; Matschiner, M; Jentoft, S; Hanel, R

    2017-04-13

    Recent developments in the field of genomics have provided new and powerful insights into population structure and dynamics that are essential for the conservation of biological diversity. As a commercially highly valuable species, the yellowfin tuna (Thunnus albacares) is intensely exploited throughout its distribution in tropical oceans around the world, and is currently classified as near threatened. However, conservation efforts for this species have so far been hampered by limited knowledge of its population structure, due to incongruent results of previous investigations. Here, we use whole-genome sequencing in concert with a draft genome assembly to decipher the global population structure of the yellowfin tuna, and to investigate its demographic history. We detect significant differentiation of Atlantic and Indo-Pacific yellowfin tuna populations as well as the possibility of a third diverged yellowfin tuna group in the Arabian Sea. We further observe evidence for past population expansion as well as asymmetric gene flow from the Indo-Pacific to the Atlantic. © The Author(s) 2017. Published by Oxford University Press on behalf of the Society for Molecular Biology and Evolution.

  20. Utilization of tuna roe and using inulin as oil replacer for producing value added omega-3 mayonnaise product

    Directory of Open Access Journals (Sweden)

    Kanrawee Hunsakul

    2016-03-01

    Full Text Available Background: The fishery industry has been important for Thailand’s economy for more than 30 years. For example, Thailand isthe world’s largest canned tuna producer and exporter. However, onlyordinary meat or white meatis usedfor raw materialin canned tuna products. Whileroe, viscera, head and dark meataresold at cheap prices,with theseby-products being usedto feed plant or local human food,its nutritive values withfat,protein and minerals arestill high. It is well known that tuna is a good source of polyunsaturated fatty acid (PUFA, including Eicosapentaenoicacid (EPA and Docosahexanoic acid (DHA.People around the world pay more attention to eatingsaladsconsisting of fruits and vegetables, in addition todressing. Generally, mayonnaise, a kind of salad dressing, consists of chicken egg yolk(12-15% and soybean oil (30-65%. Both of these ingredients contain very high saturated fatty acid contents. Therefore, because normal mayonnaise is high in fat content and low in polyunsaturated fatty acid, this product is not ideal for people on a diet or those who are trying to control their weight. Objective: To increase omega-3 through tuna roe substitution and to replace fat content using inulin gel. Methods: Tuna roe was prepared by soaking in galangalsolutionextracted with 95% ethanol for removal fishy/rancidity odor. Inulin powder 45 g was suspended in 55 ml of water before being brought to heat at temperature 80oC for 30min to form a gel and stored at 4oC. Treatment ofmakingomega-3 mayonnaise product was started using 100% tuna roe substitution for egg yolk. Thereafter, inulin gel was added to replace vegetable oil at 0, 25, 50, 75 and 100%. Basic mayonnaise containing egg yolk and 0% inulin gel (100% soy bean oil was used asthecontrol sample. Color and emulsion stability testswere monitored for physical quality. pH value, peroxide value (PV and thiobarbituric acid reactive substances (TBARS were used for chemical qualityanalyses. Total viable

  1. Leaching of Oil from Tuna Fish Liver by Using Solvent of Methyl-Ethyl Ketone

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    Mirna Rahmah Lubis

    2013-12-01

    Full Text Available Research of oil leaching from Tuna Fish Liver has been carried out by extracting of tuna fish liver in soxhlet by using methyl-ethyl ketone as solvent. Liver of fresh tuna fish is blended, put into soxhlet, and extracted at temperatures of 60oC, 65oC, 70oC, 75oC, and 80oC. After obtaining the oil, separation between solvent and oil is carried out by distillation. Oil obtained is analyzed by testing the yield, acid number, Iodine value, viscosity, and its impurities content. Yield obtained is influenced by temperature and time of leaching. Both variables indicates that the higher the variables, the more fish liver oil obtained. Maximum yield obtained is 25.552% at operating condition of leaching temperature 80oC, and leaching duration of 5 hours.

  2. Optimization of Processing Conditions of Traditional Cured Tuna Loins–Muxama

    Directory of Open Access Journals (Sweden)

    Eduardo Esteves

    2018-01-01

    Full Text Available Muxama is a traditional highly-valued food product prepared from dry-cured tuna loins in southern Portugal and Spain. The production procedure has seen little change over the last centuries. The muxama’s stability is due to reduced water activity. In addition, the drying method has secondary effects on characteristics of flavor, color, and the nutritional value of the product. Our objectives were to describe the dynamics of important physicochemical parameters such as moisture content, water activity (aW, NaCl concentration (as water–phase salt, ZNaCl, pH and color, during the salting and drying stages of muxama production, and to test the effect(s of changes in the traditional processing conditions followed in southern Portugal, aiming at optimizing the production procedure. The lowest values of moisture and aW and highest ZNaCl obtained after drying tuna loins for seven days at 20 °C exceeded the values reported for commercial products and have impact on the appearance (color of the product. Therefore, drying tuna loins at lower temperatures (ca. 14 °C is probably more appropriate. The results obtained in this study could be used in the design of future experiments at other conditions and to assess other quality parameters, e.g., total volatile base nitrogen (TVB-N, thiobarbituric acid reactive substances (TBA-RS, microorganism abundance and sensory attributes, and subsequent validation trials.

  3. Reducing the Bitterness of Tuna (Euthynnus pelamis Dark Meat with Lactobacillus casei subsp. casei ATCC 393

    Directory of Open Access Journals (Sweden)

    Ernani S. Sant’Anna

    2004-01-01

    Full Text Available During the process of canning tuna fish, considerable amounts of dark tuna meat are left over because of its bitterness, which are then used in the production of animal food. Fermentation with Lactobacillus casei subsp. casei ATCC 393 was used as an alternative to reduce this bitter taste. Samples of meat were prepared, vacuum packed and then stored at –18 °C. The frozen dark meat was used immediately after defrosting and the experiment was carried out with 2 and 4 % of NaCl with the addition of 2 and 4 % of glucose, respectively. The dark tuna meat was inoculated with lactic acid bacteria (LAB and fermented at 10 °C for 30 days. The fermentation process was monitored through bacteriological and chemical analyses, when an increase of acidity and the corresponding decrease of pH were observed due to the prevalence of LAB. Sensorial analysis, using a test of multiple comparison, was carried out with pastes of fermented dark tuna meat and presented a significant difference when compared to the paste control, indicating the reduction of bitter taste.

  4. Predicting the Distribution of Yellowfin Tuna in Philippine Waters

    Science.gov (United States)

    Perez, G. J. P.; Leonardo, E. M.

    2015-12-01

    The Philippines is considered as a major tuna producer in the Western and Central Pacific Ocean, both for domestic consumption and on industrial scale. However, with the ever-increasing demand of growing population, it has always been a challenge to achieve sustainable fishing. The creation of satellite-derived potential fishing zone maps is a technology that has been adopted by advanced countries for almost three decades already and has led to reduction in search times by up to 40%. In this study, a Generalized Additive Model (GAM) is developed to predict the distribution of the Yellowfin tuna species in seas surrounding the Philippines based on the Catch-Per-Unit-Effort (CPUE) index. Level 3 gridded chlorophyll-a and sea surface temperature from the Moderate Resolution Imaging Spectroradiometer (MODIS) aboard the Aqua satellite of the National Aeronautics and Space Administration (NASA) are the main input parameters of the model. Chlorophyll-a is linked with the presence of phytoplankton, which indicates primary productivity and suggests potential regions of fish aggregation. Fish also prefers to stay in regions where the temperature is stable, thus the sea surface temperature fronts serve as a guide to locate concentrations of fish school. Historical monthly tuna catch data from Western and Central Pacific Commissions (WCPFC) is used to train the model. The resulting predictions are converted to potential fishing zone maps and are evaluated within and beyond the historical time range of the training data used. Diagnostic tests involving adjusted R2 value, GAM residual plots and root mean square error value are used to assess the accuracy of the model. The generated maps were able to confirm locations of known tuna fishing grounds in Mindanao and other parts of the country, as well us detect their seasonality and interannual variability. To improve the performance of the model, ancillary data such as surface winds reanalysis from National Centers for

  5. Differential loggerhead by-catch and direct mortality due to surface longlines according to boat strata and gear type

    Directory of Open Access Journals (Sweden)

    Juan A. Camiñas

    2006-12-01

    Full Text Available Surface longline gears are used to fish different species, mainly albacore Thunnus alalunga (Bonnaterre, 1788, bluefin tuna Thunnus thynnus (Linnaeus, 1758, and swordfish Xiphias gladius Linnaeus, 1758, and are considered highly dangerous for threatened marine turtles. Loggerheads Caretta caretta (Linnaeus, 1758 can be incidentally captured by surface longlines. A number of captured individuals die during the fishing operation, which we consider direct mortality due to fishing. We analysed the relative loggerhead by-catch and direct mortality associated with each type of boat and gear from April to December during the period 1999-2004 in the Spanish surface longline fleet that fishes in the western Mediterranean Sea, an important fishing area for this fleet. We used different indices to compute the catch per unit effort (CPUE according to the number of hooks and to the number of fishing operations for each type of boat and gear. Both by-catch and direct mortality differed significantly according to the type of boat and gear. With respect to the number of hooks, boats longer than 12 m not using a roller and targeting bluefin tuna captured the highest number of loggerheads, whereas boats longer than 12 m with a roller that targeted swordfish caused the highest direct mortality. With respect to the number of fishing operations, boats longer than 12 m without a roller that targeted albacore captured the highest number of loggerheads; the highest direct mortality was caused by this type of boat and by boats longer than 12 m using a roller and targeting swordfish.

  6. Preliminary forecasts of Pacific bigeye tuna population trends under the A2 IPCC scenario

    Science.gov (United States)

    Lehodey, P.; Senina, I.; Sibert, J.; Bopp, L.; Calmettes, B.; Hampton, J.; Murtugudde, R.

    2010-07-01

    An improved version of the spatial ecosystem and population dynamics model SEAPODYM was used to investigate the potential impacts of global warming on tuna populations. The model included an enhanced definition of habitat indices, movements, and accessibility of tuna predators to different vertically migrant and non-migrant micronekton functional groups. The simulations covered the Pacific basin (model domain) at a 2° × 2° geographic resolution. The structure of the model allows an evaluation from multiple data sources, and parameterization can be optimized by adjoint techniques and maximum likelihood using fishing data. A first such optimized parameterization was obtained for bigeye tuna ( Thunnus obesus) in the Pacific Ocean using historical catch data for the last 50 years and a hindcast from a coupled physical-biogeochemical model driven by the NCEP atmospheric reanalysis. The parameterization provided very plausible biological parameter values and a good fit to fishing data from the different fisheries, both within and outside the time period used for optimization. We then employed this model to forecast the future of bigeye tuna populations in the Pacific Ocean. The simulation was driven by the physical-biogeochemical fields predicted from a global marine biogeochemistry - climate simulation. This global simulation was performed with the IPSL climate model version 4 (IPSL-CM4) coupled to the oceanic biogeochemical model PISCES and forced by atmospheric CO 2, from historical records over 1860-2000, and under the SRES A2 IPCC scenario for the 21st century (i.e. atmospheric CO 2 concentration reaching 850 ppm in the year 2100). Potential future changes in distribution and abundance under the IPCC scenario are presented but without taking into account any fishing effort. The simulation showed an improvement in bigeye tuna spawning habitat both in subtropical latitudes and in the eastern tropical Pacific (ETP) where the surface temperature becomes optimal for

  7. Tuna Cannery Points, Tutuila AS, 2007, US EPA Region 9

    Data.gov (United States)

    U.S. Environmental Protection Agency — American Samoa's primary industry is tuna processing by the Samoa Packing Co., user of the "Chicken of the Sea" label, and StarKist Samoa. Canneries thrive in this...

  8. An evaluation of management strategies for Atlantic tuna stocks

    Directory of Open Access Journals (Sweden)

    L. T. Kell

    2003-04-01

    Full Text Available International agreements for the International Commission for the Conservation of Atlantic Tunas (ICCAT convention area imply that Atlantic tuna stocks should be managed by strategies based on maximum sustainable yield (MSY; however, there is concern whether this will actually ensure sustainability with sufficiently high probability consistent with the principals of the precautionary approach. Therefore, the performance of MSY management strategies based on current assessment procedures was evaluated using a computer simulation framework. The framework includes the data collection, assessment, prediction, and management processes, as well as the implementation of management regulations. It therefore provides an integrated way to evaluate the relative importance of and the interactions between each component of the system with regard to the overall success of the management strategy. The study elucidates guidelines about assessment and management that are general enough to be applied to all tunas in the Atlantic Ocean. It does so by comparing different hypotheses about management and assessment for three stocks (North Atlantic albacore, Atlantic bigeye and East Atlantic skipjack, which are representative of the variety encountered (i.e. from data rich to poor and tropical to temperate waters in ICCAT stocks. Management performance was especially sensitive to the carrying capacity of the stock. The type of proxy used for MSY was more important to the success of the procedure than the frequency of assessment or the number of indices used in the assessment. Whilst the procedure was successful at achieving the management objectives for albacore, it was only partially successful for bigeye and was too conservative for skipjack.

  9. Quantitative analysis on dose to humans as a result of consuming tuna fish contaminated by cesium radionuclides

    International Nuclear Information System (INIS)

    Khani, J.; Donev, J.M.K.C.

    2014-01-01

    Quantitative empirical data is presented on the dose exposure to North Americans consuming tuna fish that have accumulated concentrations of radioactive isotopes. The two particular radioactive isotopes of interest are cesium-137 and cesium-134. Though biological effects of radiation are a widely debatable topic, the consumption of tuna fish does not support significant increased risk of cancer to humans. An important comparison is made between the elevated levels of radioactive cesium concentrations to naturally occurring radionuclides, namely potassium-40 and polonium-210. It is calculated that naturally occurring radioactive isotopes are in the orders of magnitude greater than the cesium radionuclides in tuna fish. (author)

  10. Quantitative analysis on dose to humans as a result of consuming tuna fish contaminated by cesium radionuclides

    Energy Technology Data Exchange (ETDEWEB)

    Khani, J.; Donev, J.M.K.C., E-mail: jykhani@ucalgary.ca, E-mail: jason.donev@ucalgary.ca [Univ. of Calgary, Calgary, AB (Canada)

    2014-07-01

    Quantitative empirical data is presented on the dose exposure to North Americans consuming tuna fish that have accumulated concentrations of radioactive isotopes. The two particular radioactive isotopes of interest are cesium-137 and cesium-134. Though biological effects of radiation are a widely debatable topic, the consumption of tuna fish does not support significant increased risk of cancer to humans. An important comparison is made between the elevated levels of radioactive cesium concentrations to naturally occurring radionuclides, namely potassium-40 and polonium-210. It is calculated that naturally occurring radioactive isotopes are in the orders of magnitude greater than the cesium radionuclides in tuna fish. (author)

  11. SWFSC/MMTD/ETP: Dolphin-Tuna Tracking Studies (DTTS) 1992-1993

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This research was designed to better understand the nature of the dolphin-tuna bond in the eastern tropical Pacific Ocean. In this study, researchers attempted to...

  12. 76 FR 39019 - Atlantic Highly Migratory Species; Atlantic Bluefin Tuna Quotas and Atlantic Tuna Fisheries...

    Science.gov (United States)

    2011-07-05

    ... for the more selective, directed fishing categories, and be a de facto reallocation of quota shares... of post-release mortality received substantial attention at the 2010 ICCAT meeting and NMFS... would not help for giant BFT that may not fit in the hold. NMFS should allow the tail to be cut but...

  13. [Association of the abundance and vertical distribution of tuna and beakfish in the southeast of the Caribbean sea].

    Science.gov (United States)

    Eslava, Nora; González, Leo W; Gaertner, Daniel

    2003-03-01

    The longline hooks suspension depth was estimated using the Mechanic Imitation of Flexible Systems method. The vertical distribution of tunas and billfish was determined by the relative abundance index, obtained from the catch by 11 to 25 m -long longline vessels, -based at Cumaná, Venezuela, South-eastern Caribbean Sea in depths of 65 to 142 m. The CPUE was evaluated per species, according to depth. High values were found for most of the captured species in the layer from 105 to 125 m. Yellowfin tuna (Thunnus albacares) showed the highest yield (3.37 fish/100 hooks) and blue marlin (Makaira nigricans) the lowest (0.04 fish/100 hooks). However, the statistical comparison did not allow to reject the hypothesis of lack of depth efect (Kruskal-Wallis p > .05), and demonstrated a homogeneous distribution of yellowfin tuna (Thunnus albacares), albacore (Thunnus alalunga), bigeye tuna (Thunnus obesus), sailfish (Istiophorus albicans), white marlin (Tetrapturus albidus) and blue marlin (Makaira nigricans) in the water column. The conclusion is that fish concentration in the Southern border of the Caribbean Sea is possibly due to several hydroclimatic factors--which affect tuna and billfish catching--such as water temperature and dissolved oxygen concentration which limit the distribution according to depth.

  14. Effect of electron irradiation and bayberry polyphenols on the quality change of yellowfin tuna fillets during refrigerated storage

    International Nuclear Information System (INIS)

    Bu, Tingting; Jin, Yang; Li, Xiaohui; Zhang, Jinjie; Xu, Dalun; Yang, Wenge; Lou, Qiaoming

    2017-01-01

    This study evaluated the synergistic effect of bayberry polyphenols and electron irradiation in controlling the chemical, microbiological and sensory changes of raw yellowfin tuna fillets at 4 °C for 7 days. The results indicated that the initial values of each index were dose-dependent. The dose of 5 kGy notably accelerated adenosine triphosphate degradation and lipid oxidation, while the doses of 1 and 3 kGy had acceptable sensory quality and yielded a shelf-life of 5 days. The addition of bayberry polyphenols had evident effect in inhibiting freshness breakdown, bacteria growth, histamine formation, and discoloration of tuna fillets. Bayberry polyphenols, as an antioxidant, could inhibit lipid oxidation and sensory side-effects made by irradiation up to 3 kGy. The dose of 1–3 kGy coupled with bayberry polyphenols was optimum to preserve tuna fillets which prolonged the shelf-life to 7 days. - Highlights: • Electron irradiation inhibited bacteria growth and histamine formation. • Electron irradiation increased the red color of tuna fillets. • 5 kGy irradiation decreased the sensory quality of raw tuna fillets. • Bayberry polyphenols combined with irradiation could retard the quality change. • Bayberry polyphenols could be used as natural antioxidant and color fixative.

  15. Food-web inferences of stable isotope spatial patterns in copepods and yellowfin tuna in the pelagic eastern Pacific Ocean

    Science.gov (United States)

    Olson, Robert J.; Popp, Brian N.; Graham, Brittany S.; López-Ibarra, Gladis A.; Galván-Magaña, Felipe; Lennert-Cody, Cleridy E.; Bocanegra-Castillo, Noemi; Wallsgrove, Natalie J.; Gier, Elizabeth; Alatorre-Ramírez, Vanessa; Ballance, Lisa T.; Fry, Brian

    2010-07-01

    Evaluating the impacts of climate and fishing on oceanic ecosystems requires an improved understanding of the trophodynamics of pelagic food webs. Our approach was to examine broad-scale spatial relationships among the stable N isotope values of copepods and yellowfin tuna ( Thunnus albacares), and to quantify yellowfin tuna trophic status in the food web based on stable-isotope and stomach-contents analyses. Using a generalized additive model fitted to abundance-weighted-average δ 15N values of several omnivorous copepod species, we examined isotopic spatial relationships among yellowfin tuna and copepods. We found a broad-scale, uniform gradient in δ 15N values of copepods increasing from south to north in a region encompassing the eastern Pacific warm pool and parts of several current systems. Over the same region, a similar trend was observed for the δ 15N values in the white muscle of yellowfin tuna caught by the purse-seine fishery, implying limited movement behavior. Assuming the omnivorous copepods represent a proxy for the δ 15N values at the base of the food web, the isotopic difference between these two taxa, “ ΔYFT-COP,” was interpreted as a trophic-position offset. Yellowfin tuna trophic-position estimates based on their bulk δ 15N values were not significantly different than independent estimates based on stomach contents, but are sensitive to errors in the trophic enrichment factor and the trophic position of copepods. An apparent inshore-offshore, east to west gradient in yellowfin tuna trophic position was corroborated using compound-specific isotope analysis of amino acids conducted on a subset of samples. The gradient was not explained by the distribution of yellowfin tuna of different sizes, by seasonal variability at the base of the food web, or by known ambit distances (i.e. movements). Yellowfin tuna stomach contents did not show a regular inshore-offshore gradient in trophic position during 2003-2005, but the trophic

  16. THE SEASONAL VARIABILITY OF CPUE AND CATCH-AT-SIZE DISTRIBUTION OF TROLL AND HANDLINE TUNA FISHERIES LANDED IN LABUHAN LOMBOK

    Directory of Open Access Journals (Sweden)

    Bram Setyadji

    2016-12-01

    Full Text Available Troll and hand line tuna fisheries is one of the major fishing gears landed in Labuhan Lombok coastal fishing port (PPP Labuhan Lombok west Nusa Tenggara Barat province.  Both fisheries are strongly associated with fish aggregating devices (FAD’s. The main fishing ground is Indian Ocean southern part of this province.  Several source of data has been collected regularly. Data analysis comprised of monthlycatch and effort data samples based onport monitoring program during 2012 to 2015. The result showed the diclining of CPUE of yellow fin and skipjack tuna presumably related to fishing intensity of fleets and its variability that landed in PPP Labuhan Lombok.  The increasing CPUE of skipjack tuna in 2014 was predicted due to increasing aggregation around the FADs. Constrasting seasonal fishing index pattern between yellowfin and skipjack tuna foundin 4-month cycles, started in January.A length-weight relationship suggested that yellowfin tuna caught bysmall-scale fisheries were performing allometric growth pattern (b=2.963, r2=0.9737.

  17. Evolution of movement rate increases the effectiveness of marine reserves for the conservation of pelagic fishes.

    Science.gov (United States)

    Mee, Jonathan A; Otto, Sarah P; Pauly, Daniel

    2017-06-01

    Current debates about the efficacy of no-take marine reserves (MR) in protecting large pelagic fish such as tuna and sharks have usually not considered the evolutionary dimension of this issue, which emerges because the propensity to swim away from a given place, like any other biological trait, will probably vary in a heritable fashion among individuals. Here, based on spatially explicit simulations, we investigated whether selection to remain in MRs to avoid higher fishing mortality can lead to the evolution of more philopatric fish. Our simulations, which covered a range of life histories among tuna species (skipjack tuna vs. Atlantic bluefin tuna) and shark species (great white sharks vs. spiny dogfish), suggested that MRs were most effective at maintaining viable population sizes when movement distances were lowest. Decreased movement rate evolved following the establishment of marine reserves, and this evolution occurred more rapidly with higher fishing pressure. Evolutionary reductions in movement rate led to increases in within-reserve population sizes over the course of the 50 years following MR establishment, although this varied among life histories, with skipjack responding fastest and great white sharks slowest. Our results suggest the evolution of decreased movement can augment the efficacy of marine reserves, especially for species, such as skipjack tuna, with relatively short generation times. Even when movement rates did not evolve substantially over 50 years (e.g., given long generation times or little heritable variation), marine reserves were an effective tool for the conservation of fish populations when mean movement rates were low or MRs were large.

  18. Prediction of Potential Fishing Zones for Skipjack Tuna During the Northwest Monsoon Using Remotely Sensed Satellite Data

    Directory of Open Access Journals (Sweden)

    Mukti Zainuddin

    2017-06-01

    Full Text Available One of economically important fish in the Bay of Bone is Skipjack tuna which their distribution and migration are influenced by surrounding environment.  This study aims to investigate the relationship between skipjack tuna and their environments, and to predict potential fishing zones (PFZs for the fish in the Bone Bay-Flores Sea using satellite-based oceanography and catch data. Generalized additive models (GAMs were used to assess the relationship. A generalized linear model(GLM constructed from GAMs was used for prediction. Monthly mean sea surface temperature (SST and chlorophyll-a during the northwest monsoon (December-January together with catch data were used for the year 2012-2013. We used the GAMs to assess the effect of the environment variables on skipjack tuna CPUE (catch per unit effort. The best GLM was selected to predict skipjack tuna abundance.  Results indicated that the highest CPUEs (fish/trip occurred in areas where SST and chlorophyll-a ranged from 29.5°-31.5°C and 0.15 - 0.25 mg m-3, respectively. The PFZs for skipjack were closely related to the spatial distribution of the optimum oceanographic conditions and these mainly developed in three locations, northern area of Bone Bay in December, in the middle area of the bay (4°-5.5°S and 120.5°-121.5°E during January and moved to the Flores Sea in February. The movement of skipjack concentration was consistent with the fishery data.  This suggests that the dynamics of the optimum oceanographic signatures provided a good indicator for predicting feeding grounds as hotspot areas for skipjack tuna in Bone Bay-Flores Sea during northwest monsoon.   Keywords:  skipjack tuna, potential fishing zones, satellite based-oceanographic data, Northwest monsoon

  19. [Fatty acid variation in yellowfin tuna, spotted weakfish and Florida pompano when submitted to six cooking techniques].

    Science.gov (United States)

    Castro-González, María Isabel; Maafs-Rodríguez, Ana Gabriela; Romo Pérez-Gil, Fernando

    2013-03-01

    The aim of the present study was to analyze the effect of six cooking techniques (steamed, foiled, foiled with banana leaf, baked, microwave-cooked and light frying) in the fatty acid content of Thunnus albacore (yellowfin tuna), Cynoscionnebulosus (spotted weakfish) and Trachinotuscarolinus (Florida pompano). After cooking the fish fillets, fatty acid analyses were performed using gas chromatography. Total lipids increased in all cooking techniques in tunaand spotted weakfish. Saturated fatty acids of tuna and spotted weakfish increased in three cooking techniques, while in Florida pompano only gas oven raised their content. Lightly frying generated the highest content of n-3 in tuna and spotted weakfish, and the lowest in Florida pompano, specie that presented less variation. In tuna fish, the most recommended cooking techniques are foiled with aluminum and microwave oven; for spotted weakfish, foiled with banana leaf; while Florida pompano can be prepared using all cooking methods except gas oven. This information is useful to enrich data from chemical composition tables, in which concentrations are usually presented in raw food.

  20. Gamma Irradiation Effects On Thiamin And Riboflavin On Fresh Tuna (Thunnus thynnus) And Salmon (Onchorhynchus gorbuscha)

    International Nuclear Information System (INIS)

    Tanhindarto, Rindy P.; Fox, J.B.; Lakritz, L.; Thayer, D.W.

    2002-01-01

    An experiment have been conducted on the effect of gamma irradiation on thiamine and riboflavin in fresh tuna and salmon. Samples were irradiated at (20 ± 0,5) oC by gamma rays with doses of 0; 2,5 and 5 kGy. The purpose of the present experiment was to study on changes of thiamine and riboflavin contents on extraction of fresh tuna and salmon after and before irradiation. The results showed that irradiation up to 2,5 kGy changed the thiamine and riboflavin contents on fresh tuna as well as their destruction which was significantly increasing caused by irradiated treatment with the dose of 5 kGy. The fresh salmon did not significantly change of the thiamine and riboflavin contents treated by irradiation up to 5 kGy

  1. PENGARUH PERENDAMAN TULANG IKAN TUNA (Thunnus albacares DALAM LARUTAN NaOH TERHADAP KUALITAS GELATIN HASIL OLAHANNYA

    Directory of Open Access Journals (Sweden)

    Tazwir Tazwir

    2009-06-01

    Full Text Available Gelatin tulang ikan tuna (Thunnus albaceres dengan kualitas baik seringkali sulit diperoleh, karena kebanyakan produk ini mengandung lemak dan protein non kolagen yang cukup tinggi. Dalam memproduksi gelatin tulang tuna, lemak, dan protein non kolagen tersebut harus direduksi hingga batas minimum. Dalam penelitian ini dipelajari pengaruh perendaman tulang ikan tuna dalam larutan NaOH sebelum ekstraksi terhadap kualitas gelatin yang dihasilkan. Tahapan yang dilakukan adalah degreasing, pencucian, perendaman dalam NaOH dengan variasi konsentrasi 0; 0,4; dan 0,8%, kemudian perendaman dalam HCl, ekstraksi, filtrasi, evaporasi, dan pengeringan. Hasil penelitian menunjukkan bahwa karakteristik gelatin yang terbaik diperoleh dari perendaman tulang dalam NaOH 0,4%, yaitu dengan nilai rendemen 8,37%; viskositas 3,27-3,37 cPs; pH 5,03; dan kekuatan gel 157,8 g Bloom gel strength.

  2. Oligonucleotide indexing of DNA barcodes: identification of tuna and other scombrid species in food products

    Directory of Open Access Journals (Sweden)

    Botti Sara

    2010-08-01

    Full Text Available Abstract Background DNA barcodes are a global standard for species identification and have countless applications in the medical, forensic and alimentary fields, but few barcoding methods work efficiently in samples in which DNA is degraded, e.g. foods and archival specimens. This limits the choice of target regions harbouring a sufficient number of diagnostic polymorphisms. The method described here uses existing PCR and sequencing methodologies to detect mitochondrial DNA polymorphisms in complex matrices such as foods. The reported application allowed the discrimination among 17 fish species of the Scombridae family with high commercial interest such as mackerels, bonitos and tunas which are often present in processed seafood. The approach can be easily upgraded with the release of new genetic diversity information to increase the range of detected species. Results Cocktail of primers are designed for PCR using publicly available sequences of the target sequence. They are composed of a fixed 5' region and of variable 3' cocktail portions that allow amplification of any member of a group of species of interest. The population of short amplicons is directly sequenced and indexed using primers containing a longer 5' region and the non polymorphic portion of the cocktail portion. A 226 bp region of CytB was selected as target after collection and screening of 148 online sequences; 85 SNPs were found, of which 75 were present in at least two sequences. Primers were also designed for two shorter sub-fragments that could be amplified from highly degraded samples. The test was used on 103 samples of seafood (canned tuna and scomber, tuna salad, tuna sauce and could successfully detect the presence of different or additional species that were not identified on the labelling of canned tuna, tuna salad and sauce samples. Conclusions The described method is largely independent of the degree of degradation of DNA source and can thus be applied to

  3. Oligonucleotide indexing of DNA barcodes: identification of tuna and other scombrid species in food products.

    Science.gov (United States)

    Botti, Sara; Giuffra, Elisabetta

    2010-08-23

    DNA barcodes are a global standard for species identification and have countless applications in the medical, forensic and alimentary fields, but few barcoding methods work efficiently in samples in which DNA is degraded, e.g. foods and archival specimens. This limits the choice of target regions harbouring a sufficient number of diagnostic polymorphisms. The method described here uses existing PCR and sequencing methodologies to detect mitochondrial DNA polymorphisms in complex matrices such as foods. The reported application allowed the discrimination among 17 fish species of the Scombridae family with high commercial interest such as mackerels, bonitos and tunas which are often present in processed seafood. The approach can be easily upgraded with the release of new genetic diversity information to increase the range of detected species. Cocktail of primers are designed for PCR using publicly available sequences of the target sequence. They are composed of a fixed 5' region and of variable 3' cocktail portions that allow amplification of any member of a group of species of interest. The population of short amplicons is directly sequenced and indexed using primers containing a longer 5' region and the non polymorphic portion of the cocktail portion. A 226 bp region of CytB was selected as target after collection and screening of 148 online sequences; 85 SNPs were found, of which 75 were present in at least two sequences. Primers were also designed for two shorter sub-fragments that could be amplified from highly degraded samples. The test was used on 103 samples of seafood (canned tuna and scomber, tuna salad, tuna sauce) and could successfully detect the presence of different or additional species that were not identified on the labelling of canned tuna, tuna salad and sauce samples. The described method is largely independent of the degree of degradation of DNA source and can thus be applied to processed seafood. Moreover, the method is highly flexible

  4. Efecto del proceso de esterilización en conservas de atún al natural | Effect of the sterilization process canned tuna in water

    Directory of Open Access Journals (Sweden)

    Enrique Pino Hernández

    2017-11-01

    Full Text Available The goal of this study was to evaluate the effect of the sterilization process in natural canned tuna (Katsuwonus pelamis. Three treatments were carried out: A1: precooked tuna at 110°C x 110 min, A2: tuna sterilized at 117.77°C x 55 min and A3: tuna sterilized at 117.77°C x 70 min. The canned tuna samples were analyzed microbiologically, the parameters pH, color, texture, in addition to the proximal composition were determined and a sensory difference test was performed paired with a trained panel. All results were compared through ANOVA and Duncan test. The results of the microbiological tests show that there were no risks to the health of consumers. pH had a significant difference between the treatments studied. The color of the tuna tablet presented significant differences in L* and a* coordinates, resulting in A2 with a tendency towards light reds. As for b*, there were no significant differences. The treatments had no significant difference in texture (TPA. The moisture content and proteins had a significant difference, due to the thermal process, but not for fats, ashes and total carbohydrates. There were no significant differences in the sensory test. The A2 treatment is proposed as a production alternative because it minimizes the adverse effects on the characteristics evaluated in canned tuna.

  5. The concentration and variability of selenium and mercury measured in vacuum-packed tuna fish

    International Nuclear Information System (INIS)

    Brockman, J.D.; Sharp, N.; Ngwenyama, R.A.; Shelnutt, L.D.; McElroy, J.A.

    2009-01-01

    Methylmercury (meHg) is a known toxin commonly found in fish. Fish is also a rich source of the trace nutrient selenium which has been hypothesized to modify the toxicity of meHg. We analyzed 28 samples of commercially packaged albacore and light tuna fish for selenium and mercury using standard comparator instrumental neutron activation analysis. Significant differences in the concentration of mercury and selenium were associated with the type of fish, brand and batch. Fish consumers should vary the brand of tuna fish to avoid routine consumption of a brand high in mercury. (author)

  6. Management actions and initiatives for bluefin tuna over the past ...

    African Journals Online (AJOL)

    spamer

    structure, and (3) autocorrelation in recruitment processes is considered within the likelihood framework of the model. .... The inclusion ... Cpue values for Age 4 for two recent years of the as- .... reflects the amount of change (over time period.

  7. Economic Impacts of Climate Change on Tuna Fisheries in Fiji Islands and Kiribati

    Energy Technology Data Exchange (ETDEWEB)

    Aaheim, Asbjoern; Sygna, Linda

    2000-06-01

    This paper discusses the possible economic consequences of a change in the tuna fisheries in the Pacific Ocean resulting from climate change. On the background of Lehodey's (2000) study of potential changes in the tuna fisheries, we survey possible economic impacts in terms of quantities and values and give examples of macroeconomic impacts. The two main effects of climate change on tuna fishing are likely to be a decline in the total stock and a migration of the stock westwards. This will lead to various changes in the catch in different countries. The price of the fish in the export market may also change as a result. The Pacific islands are generally dependent on fisheries, and may therefore be vulnerable to these changes, although some will probably gain while others will lose. Based on a very simple macroeconomic model, it is shown that the resulting effects for the national economy in general may diverge substantially from the expected. This applies, in particular, if the national economies are inflexible and a large part of the population relies on subsistence production, which is the case for many developing countries. (author)

  8. Thermal characterisation of gelatin extracted from yellowfin tuna skin and commercial mammalian gelatin.

    Science.gov (United States)

    Rahman, Mohammad Shafiur; Al-Saidi, Ghalib Said; Guizani, Nejib

    2008-05-15

    Glass transition and other thermal characteristics of gelatin from different sources were studied by differential scanning calorimetry (DSC) and modulated DSC (MDSC). The initial glass transition temperatures of equilibrated gelatin samples at 11.3% relative humidity, determined from reversible heat flow thermogram of MDSC, were 23, 75 and 59°C, respectively, for tuna skin, bovine and porcine gelatin. When gelatin samples were equilibrated at higher relative humidity of 52.9%, glass transition temperature of fish skin and bovine gelatin decreased to -3 and 57°C, respectively. Further increase of equilibration relative humidity to 75.3% showed increased value in the case of tuna skin, whereas bovine and porcine did not show any significant change. DSC and MDSC results indicated that tuna gelatin showed lower glass transition compared to mammalian source gelatin equilibrated at the same constant relative humidity. In general glass transition measured by DSC was found lower than the values measured by MDSC. The results in this study showed that the degree of plasticization varied with the source of gelatin as well as their extraction methods. Copyright © 2007 Elsevier Ltd. All rights reserved.

  9. KAPASITAS PENANGKAPAN PANCING ULUR TUNA DI KEPULAUAN BANDA NEIRA

    Directory of Open Access Journals (Sweden)

    Baihaqi Baihaqi

    2016-04-01

    Fishing capacity is an approach to fishery management relating to restrictions on fishing effort capacity. The effort capacity is determined by several variables such as vessel  and engine sizes, the size of the nets, and fishing tool technology. Study of fishing capacity based fisheries management is an alternative approach to control the input factors that are not efficiently used in fishing effort. Through the research capacity, it is expected to know the level of technical efficiency of fishing tuna fishing fleet in the Banda Sea. Fishing capacity was examined using analysis technique Data Envelopment Analysis (DEA using a linear programming. The results show that the tuna line fisheries in the Banda Neira with single output approach (catch weight, was generally at the level of efficiency that is far under from the optimal level with the current input has exceeded the optimal capacity. To achieve the production potential of the third fishing grounds, reductions of the capacity of 33%, 42% and 45% for Hatta Island, Manukang Island and Rhum Island, respectively should be done.

  10. Effects of the North Atlantic Oscillation on Spanish catches of albacore, Thunnus alalunga, and yellowfin tuna, Thunnus albacares, in the North–east Atlantic Ocean

    Energy Technology Data Exchange (ETDEWEB)

    Rubio, C.J.; MacIas, D.; Camiñas, J.A.; Fernandez, I.L.; Baez, J.C.

    2016-07-01

    Tuna are highly migratory pelagic species (HMPS) with great importance in commercial fishing. Several authors have highlighted the effect of climatic oscillations such as the NAO (North Atlantic Oscillation) on HMPS. This paper analyzes the effects of the NAO on two HMPS: albacore, Thunnus alalunga, and yellowfin tuna, Thunnus albacares. Fishing data from the Spanish fleet operating in the North Atlantic area were obtained from the International Commission for the Conservation of Atlantic Tunas (ICCAT) database. The results show a positive correlation between the NAO index and the Catch per Unit Effort (CPUE) for both albacore and yellowfin tuna, depicting a potential effect on their capturability. (Author)

  11. Proteomic analysis of processing by-products from canned and fresh tuna: identification of potentially functional food proteins.

    Science.gov (United States)

    Sanmartín, Esther; Arboleya, Juan Carlos; Iloro, Ibon; Escuredo, Kepa; Elortza, Felix; Moreno, F Javier

    2012-09-15

    Proteomic approaches have been used to identify the main proteins present in processing by-products generated by the canning tuna-industry, as well as in by-products derived from filleting of skeletal red muscle of fresh tuna. Following fractionation by using an ammonium sulphate precipitation method, three proteins (tropomyosin, haemoglobin and the stress-shock protein ubiquitin) were identified in the highly heterogeneous and heat-treated material discarded by the canning-industry. Additionally, this fractionation method was successful to obtain tropomyosin of high purity from the heterogeneous starting material. By-products from skeletal red muscle of fresh tuna were efficiently fractionated to sarcoplasmic and myofibrillar fractions, prior to the identification based mainly on the combined searching of the peptide mass fingerprint (MALDI-TOF) and peptide fragment fingerprinting (MALDI LIFT-TOF/TOF) spectra of fifteen bands separated by 1D SDS-PAGE. Thus, the sarcoplasmic fraction contained myoglobin and several enzymes that are essential for efficient energy production, whereas the myofibrillar fraction had important contractile proteins, such as actin, tropomyosin, myosin or an isoform of the enzyme creatine kinase. Application of proteomic technologies has revealed new knowledge on the composition of important by-products from tuna species, enabling a better evaluation of their potential applications. Copyright © 2012 Elsevier Ltd. All rights reserved.

  12. Substitutions in the Glycogenin-1 Gene Are Associated with the Evolution of Endothermy in Sharks and Tunas.

    Science.gov (United States)

    Ciezarek, Adam G; Dunning, Luke T; Jones, Catherine S; Noble, Leslie R; Humble, Emily; Stefanni, Sergio S; Savolainen, Vincent

    2016-10-05

    Despite 400-450 million years of independent evolution, a strong phenotypic convergence has occurred between two groups of fish: tunas and lamnid sharks. This convergence is characterized by centralization of red muscle, a distinctive swimming style (stiffened body powered through tail movements) and elevated body temperature (endothermy). Furthermore, both groups demonstrate elevated white muscle metabolic capacities. All these traits are unusual in fish and more likely evolved to support their fast-swimming, pelagic, predatory behavior. Here, we tested the hypothesis that their convergent evolution was driven by selection on a set of metabolic genes. We sequenced white muscle transcriptomes of six tuna, one mackerel, and three shark species, and supplemented this data set with previously published RNA-seq data. Using 26 species in total (including 7,032 tuna genes plus 1,719 shark genes), we constructed phylogenetic trees and carried out maximum-likelihood analyses of gene selection. We inferred several genes relating to metabolism to be under selection. We also found that the same one gene, glycogenin-1, evolved under positive selection independently in tunas and lamnid sharks, providing evidence of convergent selective pressures at gene level possibly underlying shared physiology. © The Author(s) 2016. Published by Oxford University Press on behalf of the Society for Molecular Biology and Evolution.

  13. Extracting of yellowfin tuna (Thunnus albacares) fish skin gelatin as influenced by alkaline concentration and extraction times

    Science.gov (United States)

    Mafazah, E. M.; Pranoto, Y.; Rohman, A.

    2018-03-01

    Yellowfin tuna (Thunnus albacares) skin is a by-product of the fish processing industry. Yellowfin tuna skin was used as materials for gelatin because it contains collagen. This study was conducted to determine the characteristics of yellowfin tuna skin gelatin (YSG). In this study, YSG was obtained by the extraction process in 0.01 M NaOH solution for 12 h. The results show that the yield of YSG was 12.49 % dry basis, with the gel strength of 291.73 g Bloom, viscosity of 8.6 cPs and melting point of 35 °C. The gel strength and melting point of YSG were lower than commercial bovine gelatin (CBG), which was 309.7401 g Bloom and 36.33 °C, respectively. However, the viscosity of YSG was higher than the CBG which was 5.6 cPs.

  14. Nisin Migration in Shelf Stable, Tuna-Filled Tortillas During Storage

    Science.gov (United States)

    2014-09-22

    INGREDIENTS AND PROCESSING ..........................................................................4 2.4 TUNA WRAP STORAGE...Leung, 1986 and Taub, 2003), meat (Pavey, 1972; Powers, 1981; Yang, 1997 and Richardson, 1995), seafood (Dymsza, 1979), eggs (Richardson, 2008 and...Incorporation of Preservatives, such as nitrites and antioxidants. (4) Thermal pasteurization by baking. (5) Appropriate Packaging, such as the

  15. Treatment of tuna cooking juices by nano filtration

    International Nuclear Information System (INIS)

    Walha, K. a.; Ben Amar, R.; Bourseau, P.; Jaouen, P.

    2009-01-01

    Canned tuna is among the largest commercial canned fishery product in Tunisia. This industry rejects many aqueous effluents (washing, thawing, rinsing and cooking waters). Cooking juice represents 50 pour cent of the total effluent volume. It has a high organic load and a very high salt content. For consequence, discarding directly the effluent in the environment is not possible and need further treatment. However, the juice seems to contain interesting flavour compounds. In this work, a membrane process system consisting in nano filtration was used to reduce the pollution load and to concentrate flavour compounds of tuna cooking juice. The NF membrane tested in this work concentrate the organic matter since the retentions are high, starting at 74 pour cent for total circulation and increasing up to 85 pour cent for volume reduction factor (VRF) of 5. The membrane undergoes severe fouling, it can be effectively cleaned through a complete basic-acid washing cycle. The effect of three chemical reagents was studied for the regeneration of the fouled membrane. In the future, we will focus on the concentrates obtained by NF: sensory analysis with a panel of trained tasters and analysis of aromatic molecules should allow to value the quality of the flavouring concentrates.

  16. Cadmium, lead, tin, total mercury, and methylmercury in canned tuna commercialised in São Paulo, Brazil.

    Science.gov (United States)

    de Paiva, Esther Lima; Morgano, Marcelo Antonio; Milani, Raquel Fernanda

    2017-09-01

    The objective of this work was to determine levels of inorganic contaminants in 30 samples of five commercial brands of canned tuna, acquired on the local market in Campinas, São Paulo, Brazil, in the year of 2015. Total mercury and methylmercury (MeHg+) were determined by atomic absorption with thermal decomposition and amalgamation; and cadmium, lead, and tin were determined by inductively coupled plasma optical emission spectrometry. Results indicated that 20% of the tuna samples surpassed limits determined by the Brazilian and European Commission legislation for cadmium; for lead, the maximum value found was 59 µg kg -1 and tin was not detected in any samples. The maximum values found for total Hg and MeHg+ were 261 and 258 µg kg -1 , respectively. As from the results obtained, it was estimated that the consumption of four cans per week (540 g) of tuna canned in water could surpass the provisional tolerable monthly intake for MeHg + by 100%.

  17. Tuna and dolphin associations in the North-east Atlantic: Evidence of different ecological niches from stable isotope and heavy metal measurements

    International Nuclear Information System (INIS)

    Das, K.; Lepoint, G.; Loizeau, V.; Debacker, V.; Dauby, P.; Bouquegneau, J.M.

    2000-01-01

    Associations of tunas and dolphins in the wild are quite frequent events and the question arises how predators requiring similar diet in the same habitat share their environmental resources. As isotopic composition of an animal is related to that of its preys, stable isotope ( 13 C/ 12 C and 15 N/ 14 N) analyses were performed in three predator species from the North-east Atlantic: the striped dolphin, Stenella coeruleoalba, the common dolphin Delphinus delphis and the albacore tuna, Thunnus alalunga, and compared to their previously described stomach content. Heavy metals (Cd, Zn, Cu and Fe) are mainly transferred through the diet and so, have been determined in the tissues of the animals. Tuna muscles display higher δ 15 N than in common and striped dolphins (mean: 11.4 vs. 10.3%o and 10.4%o, respectively) which reflects their higher trophic level nutrition. Higher δ 13 C are found in common (-18.4%o) and striped dolphin (-18.1%o) muscles than in albacore tuna (-19.3%o) probably in relation with its migratory pattern. The most striking feature is the presence of two levels of cadmium concentrations in the livers of the tunas (32 mg kg -1 dry weight (DW) vs. 5 mg kg -1 DW). These two groups also differ by their iron concentrations and their δ 15 N and δ 13 C liver values. These results suggest that in the Biscay Bay, tunas occupy two different ecological niches probably based on different squid inputs in their diet

  18. Effects Of Using Fermented Tuna Innards In Fish Feed Formula To Pangasius Pangasius Sp. Growth

    Directory of Open Access Journals (Sweden)

    Alexander KorinusMarantika

    2015-08-01

    Full Text Available The purposes of this research were to determine the best dosage of the tuna innards fermentation powder substitution based on its survival rate specific growth rate and the conversion ratio of pangasius fish Pangasius sp. fish feed. The fish feed test formula contained 30 of raw protein. The tested fish feed consisted of fish powder mixed with substitution powder from fermented tuna innards. The substitution in fish feed A0 B10 C20 and D30. The number of pangasius fish thrown into 50x30x30 cm aquarium was 20 fish with average weight 3.120.03g. Fish feeding frequency was 5 5 three times a day at 0800 1300 and 1900 for 40 days. The results showed that with the added fermented tuna innards protein powder substitution dosage until 20 of the fish feed the survival rate improved reaching 100 the best specific growth rate was at 3.36 BB and the fish feed conversion ratio declined at the lowest 1.55 gg.

  19. Significant histamine formation in tuna ( Thunnus albacares ) at 2 degrees C - effect of vacuum- and modified atmosphere-packaging on psychrotolerant bacteria

    DEFF Research Database (Denmark)

    Emborg, Jette; Laursen, B. G.; Dalgaard, Paw

    2005-01-01

    Occurrence and importance of psychrotolerant histamine producing bacteria in chilled fresh tuna were demonstrated in the present study. The objective was to evaluate microbial formation of histamine and biogenic amines in chilled fresh tuna from the Indian Ocean and stored either vacuum-packed (VP...

  20. Synthesis of Monoacylglycerol Rich in Polyunsaturated Fatty Acids from Tuna Oil with Immobilized Lipase AK

    DEFF Research Database (Denmark)

    Pawongrat, Ratchapol; Xu, Xuebing; H-Kittikun, Aran

    2007-01-01

    The aim of this study was to produce monoacylglycerols (MAG) rich in polyunsaturated fatty acids (PUFA), especially eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), by glycerolysis of tuna oil with lipase AK from Pseudomonas fluorescence immobilized on Accurel EP-100 (IM-AK). tert...... on tuna oil. The temperature was controlled at 45 degrees C. Under these conditions, with a 24 h reaction, the yield of MAG was 24.6%, but containing 56.0 wt% PUFA (EPA and DHA). Stability of the IM-AK was also studied. The hydrolytic activity of the enzyme remained at 88% and 80% of initial activity...

  1. Pelagic shark bycatch in the tuna- and swordfish-directed longline ...

    African Journals Online (AJOL)

    The capture of pelagic sharks as bycatch of the South African pelagic longline fleet targeting tuna Thunnus spp. and swordfish Xiphias gladius was investigated during the period 1998–2005. In all, 26 species were caught, of which six are listed by the International Union for Conservation of Nature (IUCN) as Vulnerable and ...

  2. Reducing the Bitterness of Tuna (Euthynnus pelamis) Dark Meat with Lactobacillus casei subsp. casei ATCC 393

    OpenAIRE

    Ernani S. Sant’Anna; Luiz H. Beirão; Fabiano Cleber Bertoldi

    2004-01-01

    During the process of canning tuna fish, considerable amounts of dark tuna meat are left over because of its bitterness, which are then used in the production of animal food. Fermentation with Lactobacillus casei subsp. casei ATCC 393 was used as an alternative to reduce this bitter taste. Samples of meat were prepared, vacuum packed and then stored at –18 °C. The frozen dark meat was used immediately after defrosting and the experiment was carried out with 2 and 4 % of NaCl with the addition...

  3. Determination of multi-element composition of Vietnamese marine sediment and tuna fish by k0-standardized neutron activation analysis

    International Nuclear Information System (INIS)

    Manh-Dung Ho; Quang-Thien Tran; Van-Doanh Ho; Thi-Sy Nguyen

    2016-01-01

    The k 0 -standardized neutron activation analysis (k 0 -NAA) has been applied for determination of multiple elements (25 elements: Al, As, Ba, Br, Ca, Cl, Co, Cr, Cs, Cu, Eu, Fe, Hg, K, La, Mg, Na, Rb, Sc, Se, Sm, Th, Ti, V and Zn) in marine sediment and tuna fish. About 50 marine sediment and 9 tuna fish samples were collected in two coastal areas of Vietnam. The health risk index (HRI) values of As and Br were higher than 1.0 for the tuna fish. Also, HRI value of Hg was 8.92 × 10 -1 indicating a relatively high potential health risk, whiles Co and Mn with HRIs = 1.56 × 10 -4 and 8.56 × 10 -4 , respectively, have the lowest potential health risks. Average enrichment factors using Al as a reference element (EF Al ) were higher than 1.5 for Eu, La, Zn, Th, Cs and As in which the highest EF Al value for As was higher than 10. This study showed that the HRI value of As in the tuna fish correlated positively with the EF Al value for the element in the marine sediment. (author)

  4. Low-temperature transitions in cod and tuna determined by differential scanning calorimetry

    DEFF Research Database (Denmark)

    Jensen, Kristina Nedenskov; Jørgensen, Bo; Nielsen, Jette

    2003-01-01

    Differential scanning calorimetry measurements have revealed different thermal transitions in cod and tuna samples. Transition temperatures detected Lit -11degreesC, -15degreesC and -21degreesC were highly dependent on the annealing temperature. In tuna muscle an additional transition was observed...... at -72degreesC. This transition appeared differently than the thermal events observed at higher temperatures, as it spanned a broad temperature interval of 25degreesC. The transition was comparable to low-temperature glass transitions reported in protein-rich systems. No transition at this low...... temperature was detected in cod samples. The transitions observed at higher temperatures (-11degreesC to -21degreesC) may possibly stein from a glassy matrix containing muscle proteins. However, the presence of a glass transition at - 11degreesC was in disagreement with the low storage stability at -18degrees...

  5. Potential toxicological hazard due to endocrine-disrupting chemicals on Mediterranean top predators: State of art, gender differences and methodological tools

    International Nuclear Information System (INIS)

    Fossi, M.C.; Casini, S.; Marsili, L.

    2007-01-01

    Man-made endocrine-disrupting chemicals (EDCs) range across all continents and oceans. Some geographic areas are potentially more threatened than others: one of these is the Mediterranean Sea. Levels of some xenobiotics are much higher here than in other seas and oceans. In this paper we review the final results of a project supported by the Italian Ministry of the Environment, in which the hypothesis that Mediterranean top predator species (such as large pelagic fish and marine mammals) are potentially at risk due to EDCs was investigated. We illustrate the need to develop and apply sensitive methodological tools, such as biomarkers (Vitellogenin, Zona Radiata proteins and CYP1A activities) for evaluation of toxicological risk in large pelagic fish top predators (Swordfish (Xiphias gladius), Bluefin Tuna (Thunnus thynnus thynnus)) and nondestructive biomarkers (CYP1A activities and fibroblast cell culture in skin biopsy), for the hazard assessment of threatened marine mammals species (Striped Dolphin, (Stenella coeruleoalba), Bottlenose Dolphin (Tursiops truncatus), Common Dolphin (Delphinus delphis) and Fin Whale (Balaenoptera physalus))exposed to EDCs. Differential gender susceptibility to EDCs is also explored both in large pelagic fish and in cetaceans. In cetaceans, male specimens showed higher cytochrome P450 induction (BPMO in skyn biopsies, CYP2B in fibroblasts cell cultures) by xenobiotics with respect to females

  6. Baja visión en la población pediátrica de Las Tunas Low vision of the pediatric population in Las Tunas province

    Directory of Open Access Journals (Sweden)

    Yunia Herbania Labrada Rodríguez

    2006-12-01

    Full Text Available Se presentan los resultados de un estudio descriptivo en 35 pacientes ciegos y débiles visuales matriculados en la Escuela de Ciegos de la provincia Las Tunas. Los pacientes fueron agrupados según categoría visual, sexo, y etiología de baja visión. El sexo masculino fue el más afectado, el mayor número de pacientes eran débiles visuales y las etiologías más frecuentes de baja visión fueron la catarata congénita y la retinopatía de la prematuridadThe results of a descriptive study of 35 blind and impaired vision patients, who study at the School for Blind People in Las Tunas province were presented in this paper. The patients were grouped according to their visual category, sex and etiology of low vision. Males were the most affected, the highest number of patients had impaired vision and the most common causes of low vision were congenital cataract and prematurity retinopathy

  7. Seasonal Variations of Oceanographic Variables and Eastern Little Tuna (Euthynnus affinis) Catches in the North Indramayu Waters Java Sea

    Science.gov (United States)

    Syamsuddin, Mega; Sunarto; Yuliadi, Lintang

    2018-02-01

    The remotely derived oceanographic variables included sea surface temperature (SST), chlorophyll-a (Chl-a) and Eastern Little Tuna (Euthynnus affinis) catches are used as a combined dataset to understand the seasonal variation of oceanographic variables and Eastern Little Tuna catches in the north Indramayu waters, Java Sea. The fish catches and remotely sensed data were analysed for the 5 years datasets from 2010-2014. This study has shown the effect of monsoon inducing oceanographic condition in the study area. Seasonal change features were dominant for all the selected oceanographic parameters of SST and Chl-a, and also Eastern Little Tuna catches, respectively. The Eastern Little Tuna catch rates have the peak season from September to December (700 to 1000) ton that corresponded with the value of SST ranging from 29 °C to 30 °C following the decreasing of Chl-a concentrations in September to November (0.4 to 0.5) mg m-3. The monsoonal system plays a great role in determining the variability of oceanographic conditions and catch in the north Indramayu waters, Java Sea. The catches seemed higher during the northwest monsoon than in the southeast monsoon for all year observations except in 2010. The wavelet spectrum analysis results confirmed that Eastern Little Tuna catches had seasonal and inter-annual variations during 2012-2014. The SST had seasonal variations during 2010-2014. The Chl-a also showed seasonal variations during 2010-2011 and interannual variations during 2011-2014. Our results would benefit the fishermen and policy makers to have better management for sustainable catch in the study area.

  8. Transectional heat transfer in thermoregulating bigeye tuna (Thunnus obesus) - a 2D heat flux model.

    Science.gov (United States)

    Boye, Jess; Musyl, Michael; Brill, Richard; Malte, Hans

    2009-11-01

    We developed a 2D heat flux model to elucidate routes and rates of heat transfer within bigeye tuna Thunnus obesus Lowe 1839 in both steady-state and time-dependent settings. In modeling the former situation, we adjusted the efficiencies of heat conservation in the red and the white muscle so as to make the output of the model agree as closely as possible with observed cross-sectional isotherms. In modeling the latter situation, we applied the heat exchanger efficiencies from the steady-state model to predict the distribution of temperature and heat fluxes in bigeye tuna during their extensive daily vertical excursions. The simulations yielded a close match to the data recorded in free-swimming fish and strongly point to the importance of the heat-producing and heat-conserving properties of the white muscle. The best correspondence between model output and observed data was obtained when the countercurrent heat exchangers in the blood flow pathways to the red and white muscle retained 99% and 96% (respectively) of the heat produced in these tissues. Our model confirms that the ability of bigeye tuna to maintain elevated muscle temperatures during their extensive daily vertical movements depends on their ability to rapidly modulate heating and cooling rates. This study shows that the differential cooling and heating rates could be fully accounted for by a mechanism where blood flow to the swimming muscles is either exclusively through the heat exchangers or completely shunted around them, depending on the ambient temperature relative to the body temperature. Our results therefore strongly suggest that such a mechanism is involved in the extensive physiological thermoregulatory abilities of endothermic bigeye tuna.

  9. EVALUASI IMPLEMENTASI MANAJEMEN BERBASIS SEKOLAH (MBSDI SMK TELEKOMUNIKASI TUNAS HARAPAN KABUPATEN SEMARANG (STUDI TENTANG PEMBELAJARAN PAKEM

    Directory of Open Access Journals (Sweden)

    Prima Widyatmoko

    2015-06-01

    Full Text Available This study aims at evaluating (a the design of implementation of PAKEM learning in SMK Telekomunikasi Tunas Harapan, (b the installation of implementation of PAKEM learning in SMK Telekomunikasi Tunas Harapan, (c the process of implementation of PAKEM learning in SMK Telekomunikasi Tunas Harapan, and (d the product evaluation of implementation of PAKEM learning in SMK Telekomunikasi Tunas Harapan. This is a evaluative research employing Discrepency Evaluation Model. Techniques of collecting data used are interview, queationaires, documentations study, and observation. Triangulation technique is used to support data validity. The results of this study are (a the design of implementation of PAKEM learning has been formulated with regard to educators criteria including input, process, and output aspects, (b there is still 2% discrepency in teachers’ certificates. Qualifications of teachers’ academic and teachers’ competencies in PAKEM learning are in line with the standards determined, (c criteria of succesful PAKEM learning program have not been fulfiled entirely. Syllabus and lesson plan preparation reach 85%. Active learning process goes to low discrepency (13%. Creative learning process goes to moderate discrepency (31%. Effective learning process goes to low discrepency (18%. Fun learning process goes to low discrepency (15%. In learning achievement assessment, teachers have done their responsibilities well, (d the products in PAKEM learning include achievement in affective aspect where 90% students gain predicate “good”, cognitive aspect where 80% students gain B-, and psychomotoric aspect where 79% students gain B-.

  10. Effect of electron irradiation and bayberry polyphenols on the quality change of yellowfin tuna fillets during refrigerated storage

    Science.gov (United States)

    Bu, Tingting; Jin, Yang; Li, Xiaohui; Zhang, Jinjie; Xu, Dalun; Yang, Wenge; Lou, Qiaoming

    2017-09-01

    This study evaluated the synergistic effect of bayberry polyphenols and electron irradiation in controlling the chemical, microbiological and sensory changes of raw yellowfin tuna fillets at 4 °C for 7 days. The results indicated that the initial values of each index were dose-dependent. The dose of 5 kGy notably accelerated adenosine triphosphate degradation and lipid oxidation, while the doses of 1 and 3 kGy had acceptable sensory quality and yielded a shelf-life of 5 days. The addition of bayberry polyphenols had evident effect in inhibiting freshness breakdown, bacteria growth, histamine formation, and discoloration of tuna fillets. Bayberry polyphenols, as an antioxidant, could inhibit lipid oxidation and sensory side-effects made by irradiation up to 3 kGy. The dose of 1-3 kGy coupled with bayberry polyphenols was optimum to preserve tuna fillets which prolonged the shelf-life to 7 days.

  11. Mercury levels of yellowfin tuna (Thunnus albacares) are associated with capture location.

    Science.gov (United States)

    Nicklisch, Sascha C T; Bonito, Lindsay T; Sandin, Stuart; Hamdoun, Amro

    2017-10-01

    Mercury is a toxic compound to which humans are exposed by consumption of fish. Current fish consumption advisories focus on minimizing the risk posed by the species that are most likely to have high levels of mercury. Less accounted for is the variation within species, and the potential role of the geographic origin of a fish in determining its mercury level. Here we surveyed the mercury levels in 117 yellowfin tuna caught from 12 different locations worldwide. Our results indicated significant variation in yellowfin tuna methylmercury load, with levels that ranged from 0.03 to 0.82 μg/g wet weight across individual fish. Mean mercury levels were only weakly associated with fish size (R 2  mercury load, and argue for better traceability of fish to improve the accuracy of exposure risk predictions. Copyright © 2017 Elsevier Ltd. All rights reserved.

  12. Gender Transformations and Colonial Displacements in Laura Antillano's "Tuna de mar"

    Science.gov (United States)

    Reid, Alana

    2015-01-01

    This paper examines the trajectories of two characters in Laura Antillano's short story, "Tuna de mar" (1991), as they navigate interrelated systems of power and attempt to position themselves closer to, or further away from, the margins. Set in the late eighteenth century, the tale features a female protagonist who escapes prostitution…

  13. V ITER chrání zimu tuna stříbra

    Czech Academy of Sciences Publication Activity Database

    Řípa, Milan

    Říjen (2016) ISSN 2464-7888 Institutional support: RVO:61389021 Keywords : fusion * tokamak * ITER * thermal shield * silver * superconductivity Subject RIV: BL - Plasma and Gas Discharge Physics http://www.3pol.cz/cz/rubriky/jaderna-fyzika-a-energetika/1922-v-iter-chrani-zimu-tuna-stribra

  14. A cascade of warming impacts brings bluefin tuna to Greenland waters

    DEFF Research Database (Denmark)

    MacKenzie, Brian R.; Payne, Mark R.; Boje, Jesper

    2014-01-01

    Rising ocean temperatures are causing marine fish species to shift spatial distributions and ranges, and are altering predator-prey dynamics in food webs. Most documented cases of species shifts so far involve relatively small species at lower trophic levels, and consider individual species in ec...... impacts is restructuring the food web in east Greenland waters.......Rising ocean temperatures are causing marine fish species to shift spatial distributions and ranges, and are altering predator-prey dynamics in food webs. Most documented cases of species shifts so far involve relatively small species at lower trophic levels, and consider individual species...

  15. Readiness Assessment Towards Smart Manufacturing System for Tuna Processing Industry in Indonesia

    Science.gov (United States)

    Anggrahini, D.; Kurniati, N.; Karningsih, P. D.; Parenreng, S. M.; Syahroni, N.

    2018-04-01

    Marine product processing is one of the top priority clusters in the national development. Tuna, as a kind of deep ocean fishes, has the highest number of production that significantly increased throughout the years. Indonesia government encourages tuna processing industry, which are mostly dominated by small to medium enterprises, to grow continuously. Nowadays, manufacturers are facing substantial challenges in adopting modern system and technology that will lead a significant improvement through the internet of things (IoT). A smart factory transform integrated manufacturing process, in a high speed processing to respond customer needs. It has some positive impacts, such as increasing productivity, reducing set up time, shortening marketing and other support activities, hence the process is being more flexible and efficient. To implement smart manufacturing system, factories should know the readiness at any level of them, technology capability and strategy appropriateness. This exploratory study aims to identify the criterias, and develop an assessment tools to measure the level towards smart factory.

  16. Distribution and transportability of hexabromocyclododecane (HBCD) in the Asia-Pacific region using skipjack tuna as a bioindicator

    Energy Technology Data Exchange (ETDEWEB)

    Ueno, Daisuke [National Water Research Institute, Environment Canada, 867 Lakeshore Road, P.O. Box 5050, Burlington ON L7R 4A6 (Canada) and Center for Marine Environmental Studies (CMES), Ehime University, Ehime (Japan)]. E-mail: ueno@qg8.so-net.ne.jp; Alaee, Mehran [National Water Research Institute, Environment Canada, 867 Lakeshore Road, P.O. Box 5050, Burlington ON L7R 4A6 (Canada); Marvin, Chris [National Water Research Institute, Environment Canada, 867 Lakeshore Road, P.O. Box 5050, Burlington ON L7R 4A6 (Canada); Muir, Derek C.G. [National Water Research Institute, Environment Canada, 867 Lakeshore Road, P.O. Box 5050, Burlington ON L7R 4A6 (Canada); Macinnis, Gordia [National Water Research Institute, Environment Canada, 867 Lakeshore Road, P.O. Box 5050, Burlington ON L7R 4A6 (Canada); Reiner, Eric [Ontario Ministry of the Environment, Toronto, ON (Canada); Crozier, Patrick [Ontario Ministry of the Environment, Toronto, ON (Canada); Furdui, Vasile I. [Ontario Ministry of the Environment, Toronto, ON (Canada); Subramanian, Annamalai [Center for Marine Environmental Studies (CMES), Ehime University, Ehime (Japan); Fillmann, Gilberto [Department of Oceanography, Fundacao Universidade Federal do Rio Grande, Rio Grande (Brazil); Lam, Paul K.S. [Department of Biology and Chemistry, City University of Hong Kong (Hong Kong); Zheng, Gene J. [Department of Biology and Chemistry, City University of Hong Kong (Hong Kong); Muchtar, Muswerry [Research and Development Center for Oceanology, Indonesian Institute of Sciences, Jakarta (Indonesia); Razak, Hamidah [Research and Development Center for Oceanology, Indonesian Institute of Sciences, Jakarta (Indonesia); Prudente, Maricar [Science Education Department, De La Salle University, Manila (Philippines); Chung, Kyu-hyuck [College of Pharmacy, Sungkyunkwan University, Seoul, South Korea (Korea); Tanabe, Shinsuke [Center for Marine Environmental Studies (CMES), Ehime University, Ehime (Japan)

    2006-11-15

    The geographical distribution of hexabromocyclododecane (HBCD) was investigated through analysis of muscle tissue of skipjack tuna (Katsuwonus pelamis) collected from offshore waters of Asia-Pacific region (Japan, Taiwan, Philippines, Indonesia, Seychelles, Brazil, Japan Sea, East China Sea, South China Sea, Indian Ocean and North Pacific Ocean). HBCD was detected in almost all samples analyzed (<0.1 to 45 ng/g lipid weight basis), indicating widespread presence of this compound in the marine environment. Elevated concentrations of HBCD were found in skipjack tuna from areas around Japan, which have the larger modern industrial/urban societies, and implicated these areas as primary regional sources. All three individual HBCD isomers ({alpha}-, {gamma}- and {beta}-HBCD) were detected in almost all samples; the percentage contribution of the {alpha}-isomer to total HBCD increased with increasing latitude. The estimated empirical 1/2 distance for {alpha}-HBCD was 8500 km, which is one of the highest atmospheric transportability among various halogenated persistent organic pollutants (POPs). - Geographical distribution of hexabromocyclododecane (HBCD) in offshore water of Asia-Pacific region was investigated using skipjack tuna as a bioindicator.

  17. Distribution and transportability of hexabromocyclododecane (HBCD) in the Asia-Pacific region using skipjack tuna as a bioindicator

    International Nuclear Information System (INIS)

    Ueno, Daisuke; Alaee, Mehran; Marvin, Chris; Muir, Derek C.G.; Macinnis, Gordia; Reiner, Eric; Crozier, Patrick; Furdui, Vasile I.; Subramanian, Annamalai; Fillmann, Gilberto; Lam, Paul K.S.; Zheng, Gene J.; Muchtar, Muswerry; Razak, Hamidah; Prudente, Maricar; Chung, Kyu-hyuck; Tanabe, Shinsuke

    2006-01-01

    The geographical distribution of hexabromocyclododecane (HBCD) was investigated through analysis of muscle tissue of skipjack tuna (Katsuwonus pelamis) collected from offshore waters of Asia-Pacific region (Japan, Taiwan, Philippines, Indonesia, Seychelles, Brazil, Japan Sea, East China Sea, South China Sea, Indian Ocean and North Pacific Ocean). HBCD was detected in almost all samples analyzed (<0.1 to 45 ng/g lipid weight basis), indicating widespread presence of this compound in the marine environment. Elevated concentrations of HBCD were found in skipjack tuna from areas around Japan, which have the larger modern industrial/urban societies, and implicated these areas as primary regional sources. All three individual HBCD isomers (α-, γ- and β-HBCD) were detected in almost all samples; the percentage contribution of the α-isomer to total HBCD increased with increasing latitude. The estimated empirical 1/2 distance for α-HBCD was 8500 km, which is one of the highest atmospheric transportability among various halogenated persistent organic pollutants (POPs). - Geographical distribution of hexabromocyclododecane (HBCD) in offshore water of Asia-Pacific region was investigated using skipjack tuna as a bioindicator

  18. Trophic niches of sympatric tropical tuna in the Western Indian Ocean inferred by stable isotopes and neutral fatty acids

    Science.gov (United States)

    Sardenne, Fany; Bodin, Nathalie; Chassot, Emmanuel; Amiel, Aurélien; Fouché, Edwin; Degroote, Maxime; Hollanda, Stéphanie; Pethybridge, Heidi; Lebreton, Benoit; Guillou, Gaël; Ménard, Frédéric

    2016-08-01

    This study examined the trophic ecology of three sympatric tropical tuna species (bigeye BET, skipjack SKJ, and yellowfin YFT) sampled in the Western Indian Ocean throughout 2013. Specifically we explored inter-specific resource partitioning and ontogenetic variability using neutral fatty acids and stable isotope analysis of liver and muscle from small (⩽100 cm fork length, FL) and large (>100 cm FL) tuna collected in mixed schools at the surface by purse-seine. Both biochemical tracers were used to calculate trophic niche indices that collectively revealed high potential for resource overlap, especially among small tuna. Resource overlap appeared strongest between BET and YFT, with SKJ tissues having high carbon isotope (δ13C) values (-17 ± 0.3‰), lower nitrogen isotope (δ15N) values (11.4 ± 0.6‰), and higher relative proportion of poly-unsaturated fatty acids (PUFA) than the two other species, indicating a different diet. Size was found to be a strong predictor for most biochemical tracers in the three species with δ13C, δ15N and total lipid content in the liver. In the larger species (YFT and BET), proportions of mono-unsaturated fatty acids typically increased with size, while quantities of PUFA decreased. In addition to ontogenetic variability, trophic markers were shown to vary between sampling area and season: higher lipid reserves and δ15N values, and lower δ13C values occurred during monsoon periods around Seychelles than in the Mozambique Channel (parted from about 1500 km). Our multi-tracer approach reveals the magnitude of potential competitive interactions in mixed tropical tuna schools at both small and large sizes and demonstrates that ontogenetic niche differentiation acts as a major factor of coexistence in tropical tuna.

  19. DISKRIMINASI KELAMIN PADA IKAN TUNA SIRIP KUNING, Yellowfin tuna MENGGUNAKAN ANALISIS DOT BLOT DAN ELISA

    Directory of Open Access Journals (Sweden)

    Gusti Ngurah Permana

    2014-08-01

    Full Text Available Pemahaman tentang penentuan jenis kelamin dalam populasi induk merupakan hal yang sangat penting bagi keberhasilan program pembenihan. Pengukuran reaksi antibodi dan aktivitas hormon testosterone, serta estradiol adalah metode dengan potensi yang secara akurat dapat menentukan jenis kelamin ikan tanpa mematikan ikan. Tujuan penelitian ini adalah untuk mengetahui akurasi metode dot blot dan ELISA dengan 11-ketotestorsterone (11-KT yang tersedia secara komersial EIA-kit untuk membedakan jenis kelamin ikan tuna sirip kuning. Hasil analisis menunjukkan bahwa metode dot blot menghasilkan ekspresi vitelogenin tampak jelas pada individu betina dan efek plasma terlihat transparan, jika dibandingkan dengan individu jantan. Interpretasi dari metode ini memerlukan pengalaman dan keahlian dalam akurasi pembacaan hasil. Aktivitas hormon 11-KT dengan sampel klip sirip dan plasma memberikan hasil yang baik dengan aktivitas hormon terlihat jelas.

  20. Comportamiento de la retinopatía de la prematuridad en la provincia Las Tunas Performance of retinopathy of prematurity in Las Tunas province

    Directory of Open Access Journals (Sweden)

    Yunia Herbania Labrada Rodríguez

    2006-06-01

    Full Text Available Se realizó un estudio observacional de tipo transversal en la provincia de Las Tunas en el período comprendido desde enero de 2002 a diciembre de 2004. El universo estuvo constituido por 14 503 nacidos vivos, la muestra la integraron 227 recién nacidos prematuros a los cuales se les realizó oftalmoscopia indirecta. La tasa de incidencia de retinopatía de la prematuridad fue de 0,10. Los factores de riesgo más relevantes fueron la prematuridad y el bajo peso al nacer. La retinopatía de la prematuridad fue más frecuente en recién nacidos de peso menor o igual a 1 500 g y la edad gestacional entre 30 y 34 semanas. La retinopatía de la prematuridad estadio I predominó en la serieAn observational cross-sectional study was conducted in Las Tunas province from January 2002 to December 2004. The universe of study was made up of 14 503 live births and the sample was composed by 227 premature newborns, who were performed indirect ophtalmoscopy. The incidence rate was 0,10. The most relevant risk factors were prematurity and low birthweight. Retinopathy of prematurity was more frequent in newborns weighing 1 500 g or less at birth and in gestational age of 30-34 weeks. Retinopathy of prematurity stage 1 predominated

  1. Tuna cannery energy conservation interventions: Technical/economic feasibility study

    Energy Technology Data Exchange (ETDEWEB)

    Florio, G. (Calabria Univ. Arcavacata di Rende (Italy). Dipt. di Meccanica)

    An energy audit was conducted on a 230,000 can (x 80 g)/day tuna cannery to determine where technically and economically feasible energy savings interventions could be made. The plant is equipped with an oil fired boiler which supplies steam for cooking and sterilization purposes. In the energy/cost analysis, it was found that the most significant and cost effective energy savings could be obtained by the substitution of the four sterilization chambers with three sets of twin sterilization/heat exchange chambers.

  2. El Niño revisited: the influence of El Niño Southern Oscillation on the world's largest tuna fisheries.

    Science.gov (United States)

    Receveur, A.; Simon, N.; Menkes, C.; Tremblay-Boyer, L.; Senina, I.; Lehodey, P.

    2016-12-01

    El Niño Southern Oscillation (ENSO) drives global climate on inter-annual scales and impacts the ecosystem structure in the warm-pool and cold-tongue of the Pacific Ocean. During the El Niño phase of ENSO, the warm-pool can stretch from the western equatorial Pacific to the eastern Pacific allowing species associated with the warm-pool to correspondingly spread eastwards. Conversely, during the la Niña phase the warm-pool is pushed to the far western equatorial Pacific by the cold-tongue allowing species associated with this ecosystem to spread westwards. Consequently, ENSO dynamics are likely to be critical for understanding the ecological processes supporting fisheries in the equatorial Pacific Ocean. Surface inhabiting tuna, such as skipjack, are thought to track the convergence of the warm-pool and cold-tongue with fishing vessels tracking this tuna behavior. Given the reliance of Pacific Island economies on tuna fisheries, knowing when tunas are more likely to be present in high density in their territorial waters is beneficial for harvest control policies such as effort trading between nations. We use the SEAPODYM model to investigate the response of bigeye and skipjack tuna species to the phases of ENSO. SEAPODYM is an age structured model that integrates fisheries dependent and independent data with environmental data. We analyze the outputs of SEAPODYM using wavelets to assess the impact of environmental and biotic variables on the abundance and distribution of adult and juvenile age classes and to study time series cycle and temporal lags to ENSO. The main result for skipjack is the eastward or westward movement of the biomass pattern which is significantly lagged with the warm pool ENSO displacement. That lag ranges from 8 months for juvenile up to 18 months for adults. Such delayed response, can be traced in the model. Higher temperature in the central Pacific during El Niño leads to better recruitment which leads to lagged increase of juvenile

  3. The age of the Tunas formation in the Sauce Grande basin-Ventana foldbelt (Argentina): Implications for the Permian evolution of the southwestern margin of Gondwana

    Science.gov (United States)

    López-Gamundí, Oscar; Fildani, Andrea; Weislogel, Amy; Rossello, Eduardo

    2013-08-01

    New SHRIMP radiogenic isotope dating on zircons in tuffs (280.8 ± 1.9 Ma) confirms the Early Permian (Artinskian) age of the uppermost section of the Tunas Formation. Tuff-rich levels in the Tunas Formation are exposed in the Ventana foldbelt of central Argentina; they are part of a deltaic to fluvial section corresponding to the late overfilled stage of the Late Paleozoic Sauce Grande foreland basin. Recent SHRIMP dating of zircons from the basal Choiyoi volcanics exposed in western Argentina yielded an age of 281.4 ± 2.5 Ma (Rocha-Campos et al., 2011). The new data for the Tunas tuffs suggest that the volcanism present in the Sauce Grande basin can be considered as the distal equivalent of the earliest episodes of the Choiyoi volcanism of western Argentina. From the palaeoclimatic viewpoint the new Tunas SHRIMP age confirms that by early Artinskian glacial conditions ceased in the Sauce Grande basin and, probably, in adajacent basins in western Gondwana.

  4. ESTIMATION OF YELLOWFIN TUNA PRODUCTION LANDED IN BENOA PORT WITH WEIGHT-WEIGHT, LENGTH-WEIGHT RELATIONSHIPS AND CONDITION FACTOR APPROACHES

    Directory of Open Access Journals (Sweden)

    Irwan Jatmiko

    2017-01-01

    Full Text Available Yellowfin tuna (Thunnus albacares is one of the important catch for the fishing industry in Indonesia. Length-weight relationship study is one of important tools to support fisheries management. However it could not be done to yellowfin tuna landed in Benoa port since they are in the form of gilled-gutted condition. The objectives of this study are to determine the relationship between gilled-gutted weight (GW and whole weight (WW, to calculate length weight relationship between fork length (FL and estimated whole weight (WW and to assess the relative condition factor (Kn of yellowfin tuna in Eastern Indian Ocean. Data were collected from three landing sites i.e. Malang, East Java; Benoa, Bali and Kupang, East Nusa Tenggara from January 2013 to February 2014. Linear regression analysis applied to test the significance baseline between weight-weight relationships and log transformed length weight relationship. Relative condition factor (Kn used to identify fish condition among length groups and months. The results showed a significant positive linear relationships between whole weight (WW and gilled-gutted weight (GW of T. albacares (p<0.001. There was a significant positive linier relationships between log transformed fork length and log transformed whole weight of T. albacares (p<0.001. Relative condition factor (Kn showed declining pattern along with length increase and varied among months. The findings from this study provide data for management of yellowfin tuna stock and population.

  5. Projecting the impacts of climate change on skipjack tuna abundance and spatial distribution.

    Science.gov (United States)

    Dueri, Sibylle; Bopp, Laurent; Maury, Olivier

    2014-03-01

    Climate-induced changes in the physical, chemical, and biological environment are expected to increasingly stress marine ecosystems, with important consequences for fisheries exploitation. Here, we use the APECOSM-E numerical model (Apex Predator ECOSystem Model - Estimation) to evaluate the future impacts of climate change on the physiology, spatial distribution, and abundance of skipjack tuna, the worldwide most fished species of tropical tuna. The main novelties of our approach lie in the mechanistic link between environmental factors, metabolic rates, and behavioral responses and in the fully three dimensional representation of habitat and population abundance. Physical and biogeochemical fields used to force the model are provided by the last generation of the IPSL-CM5 Earth System Model run from 1990 to 2100 under a 'business-as-usual' scenario (RCP8.5). Our simulations show significant changes in the spatial distribution of skipjack tuna suitable habitat, as well as in their population abundance. The model projects deterioration of skipjack habitat in most tropical waters and an improvement of habitat at higher latitudes. The primary driver of habitat changes is ocean warming, followed by food density changes. Our projections show an increase of global skipjack biomass between 2010 and 2050 followed by a marked decrease between 2050 and 2095. Spawning rates are consistent with population trends, showing that spawning depends primarily on the adult biomass. On the other hand, growth rates display very smooth temporal changes, suggesting that the ability of skipjack to keep high metabolic rates in the changing environment is generally effective. Uncertainties related to our model spatial resolution, to the lack or simplification of key processes and to the climate forcings are discussed. © 2013 John Wiley & Sons Ltd.

  6. Dynamic optimal foraging theory explains vertical migrations of bigeye tuna

    DEFF Research Database (Denmark)

    Thygesen, Uffe Høgsbro; Sommer, Lene; Evans, Karen

    2016-01-01

    Bigeye tuna are known for remarkable daytime vertical migrations between deep water, where food is abundant but the water is cold, and the surface, where water is warm but food is relatively scarce. Here we investigate if these dive patterns can be explained by dynamic optimal foraging theory...... behaves such as to maximize its energy gains. The model therefore provides insight into the processes underlying observed behavioral patterns and allows generating predictions of foraging behavior in unobserved environments...

  7. Some epidemiological and clinical characteristics of solid malignant tumors in children from Las Tunas

    Directory of Open Access Journals (Sweden)

    Silvio Laffita Estévez

    2015-11-01

    Full Text Available Background: cancer has kept up as the second cause of death in Las Tunas pediatric population.Objective: to characterize clinical and epidemiological variables of the cases diagnosed with solid malignant tumors in children seen and treated in the onco-pediatric consultation of “Mártires de Las Tunas” Pediatric Hospital from 2010 to 2014.Methods: a descriptive and retrospective study was carried out in 62 patients with solid malignant tumors in the pediatric population of Las Tunas province, from January, 2010 to December, 2014. The variables considered were: presumptive diagnosis, age, family history of tumors, clinical signs of alarm related to the tumor at the moment of diagnosis and investigations to confirm the diagnosis.  Results: non-Hodgkin lymphoma was the most frequently diagnosed tumor, with a 19, 35% of the patients. The most affected age group was between 11 and 14 years old, with a 33, 87%. The 16, 13% of the patients had family history of solid malignant tumors. The most frequent form of presentation was the abdominal tumor, with 29, 03 %. Abdominal ultrasound and computerized axial tomography were the most used complementary diagnostic means, both in the 17, 74% of the patients. Biopsy was used to confirm the 96, 77% of the cases.Conclusions: the clinical and epidemiological variables were characterized in pediatric patients diagnosed with solid malignant tumors in Las Tunas. Children between 11 and 14 years old and family history of malignant tumors were the most significant findings.

  8. Revisiting the vulnerability of juvenile bigeye (Thunnus obesus) and yellowfin (T. albacares) tuna caught by purse-seine fisheries while associating with surface waters and floating objects.

    Science.gov (United States)

    Scutt Phillips, Joe; Pilling, Graham M; Leroy, Bruno; Evans, Karen; Usu, Thomas; Lam, Chi Hin; Schaefer, Kurt M; Nicol, Simon

    2017-01-01

    Tuna fisheries catch over three million tonnes of skipjack tuna (Katsuwonus pelamis) each year, the majority of which come from purse-seine vessels targeting fish associated with man-made fish aggregating devices (FADs). A significant challenge for fisheries management is to maximize the efficiency of skipjack tuna catches whilst minimizing the bycatch of small and immature bigeye (Thunnus obesus) and yellowfin (T. albacares) tuna, for which long-term sustainability is uncertain in 75% of the world's stocks. To better manage the issues common with this fishing method, an improved understanding of tuna behaviour around FADs is necessary. We probabilistically classified the vertical behavioural patterns of 50 bigeye and 35 yellowfin tuna (mean fork length 72cm and 70cm, respectively) electronically tagged throughout the western and central Pacific Ocean into shallow and deep states, using a state-space modelling approach. The occurrence of surface-association behaviours, defined as an individual remaining in a shallow state for 24-hours, was examined in relation to known capture events and FAD density. In general, surface-association events for both species were short and lasted on average less than three days, although events as long as 28 days were observed, and were more common in yellowfin when in archipelagic waters. Events were longest immediately following tagging in 62% and 17% of bigeye and yellowfin, respectively. Surface-association behaviour was not generally estimated just prior to recapture, being either non-existent or shorter than two days for 85% of bigeye and 74% of yellowfin. Current management measures in purse-seine tuna fisheries involve periodic or spatial closures for FAD use. If the chief benefit to purse-seine fishers of surface-association around floating objects is in locating schools in horizontal space at short-term time-scales, rather than holding fish near the surface for extended periods, controlling the number of sets made on FADs

  9. Revisiting the vulnerability of juvenile bigeye (Thunnus obesus and yellowfin (T. albacares tuna caught by purse-seine fisheries while associating with surface waters and floating objects.

    Directory of Open Access Journals (Sweden)

    Joe Scutt Phillips

    Full Text Available Tuna fisheries catch over three million tonnes of skipjack tuna (Katsuwonus pelamis each year, the majority of which come from purse-seine vessels targeting fish associated with man-made fish aggregating devices (FADs. A significant challenge for fisheries management is to maximize the efficiency of skipjack tuna catches whilst minimizing the bycatch of small and immature bigeye (Thunnus obesus and yellowfin (T. albacares tuna, for which long-term sustainability is uncertain in 75% of the world's stocks. To better manage the issues common with this fishing method, an improved understanding of tuna behaviour around FADs is necessary. We probabilistically classified the vertical behavioural patterns of 50 bigeye and 35 yellowfin tuna (mean fork length 72cm and 70cm, respectively electronically tagged throughout the western and central Pacific Ocean into shallow and deep states, using a state-space modelling approach. The occurrence of surface-association behaviours, defined as an individual remaining in a shallow state for 24-hours, was examined in relation to known capture events and FAD density. In general, surface-association events for both species were short and lasted on average less than three days, although events as long as 28 days were observed, and were more common in yellowfin when in archipelagic waters. Events were longest immediately following tagging in 62% and 17% of bigeye and yellowfin, respectively. Surface-association behaviour was not generally estimated just prior to recapture, being either non-existent or shorter than two days for 85% of bigeye and 74% of yellowfin. Current management measures in purse-seine tuna fisheries involve periodic or spatial closures for FAD use. If the chief benefit to purse-seine fishers of surface-association around floating objects is in locating schools in horizontal space at short-term time-scales, rather than holding fish near the surface for extended periods, controlling the number of sets

  10. Historia del Boxeo en la provincia de las Tunas hasta 1990

    Directory of Open Access Journals (Sweden)

    Etián Jiménez Espinosa

    2009-09-01

    Full Text Available La presente investigación hace un estudio sobre los antecedentes, génesis, evolución y desarrollo del boxeo en la provincia en Las Tunas, el cual se realiza a partir de una periodización hasta nuestros días. El estudio responde a una de las problemáticas más complejas y necesarias del territorio, que responde a la carencia de información bibliográfica para impartir con la calidad pertinente la asignatura Historia del Deporte, en todos sus ámbitos – internacional, nacional y local- y con un enfoque de análisis totalizador. Se rescata la memoria histórica en su expresión deportiva como parte de la identidad cultural de la región. Las fuentes de la información fueron obtenidas de una acuciosa búsqueda en todos los medios de prensa local, antes y después del Triunfo de la Revolución, de una veintena de especialistas y conocedores del hecho histórico deportivo objeto de estudio. Además, se consultaron numerosas fuentes bibliográficas sobre la historia de este deporte en su manifestación a nivel nacional e internacional.

  11. Population genetic structure of skipjack tuna Katsuwonus pelamis from the Indian coast using sequence analysis of the mitochondrial DNA D-loop region

    Digital Repository Service at National Institute of Oceanography (India)

    Menezes, M.R.; Kumar, G.; Kunal, S.P.

    Biology (2012) 80, 2198–2212 doi:10.1111/j.1095-8649.2012.03270.x, available online at wileyonlinelibrary.com Population genetic structure of skipjack tuna Katsuwonus pelamis from the Indian coast using sequence analysis of the mitochondrial DNA D...-loop region M. R. Menezes*, G. Kumar and S. P. Kunal Biological Oceanography Division, National Institute of Oceanography (CSIR), Dona Paula, Goa 403 004, India (Received 26 May 2011, Accepted 14 February 2012) Genetic structure of skipjack tuna Katsuwonus...

  12. OPTIMASI JUMLAH RUMPON, UNIT ARMADA DAN MUSIM PENANGKAPAN PERIKANAN TUNA DI PERAIRAN PRIGI, JAWA TIMUR

    Directory of Open Access Journals (Sweden)

    Erfind Nurdin

    2016-05-01

    Full Text Available Sebagai alat bantu penangkapan ikan, rumpon berfungsi untuk menarik kelompok ikan agar berkumpul di sekitarnya. Dalam jangka pendek rumpon dapat meningkatkan produksi hasil tangkapan, efisiensi dan efektivitas operasi penangkapan ikan. Namun rumpon juga dapat berdampak negatif terhadap keberlajutan stok sumberdaya. Penelitian ini dilakukan di PPN Prigi, Jawa Timur, dengan tujuan untuk mengkaji status pemanfaatan perikanan tuna, optimasi jumlah unit armada dan rumpon serta musim penangkapan ikan.  Beberapa analisis yang digunakan antara lain linear goal programming (LGP, fishing power indeks (FPI, catch per unit of effort (CPUE, maximum sustainable yield (MSY, dan untuk mengetahui pola musim tangkap menggunakan Metode Persentase Rata-rata. Hasil penelitian menunjukkan terdapat indikasi pemanfaatan perikanan tuna yang berlebih pada tingkat pengupayaan yang melampaui batas maksimum (MSY = 2334,9 ton/tahun.  Jumlah optimum untuk armada jaring insang sebanyak 43 unit, pancing tonda 63 unit dan rumpon 33 unit pada luasan area penelitian 8.940 km². Musim tangkap berlangsung pada Bulan Juni sampai Desember dengan puncak musim di bulan Juli.    Fish Aggregating Device (FADs has a function to attract and aggregate fish schooling. In short term, the advantage of FADs used is to increase the efficiency and effectiveness of fishing operations and the fish caught by the fishers; however FADs might also result a negative impact on the sustainability of fish stock.This study was conducted in fishing area of Prigi National Fishing Port, East Java. The objective of this study is to investigate the tuna fisheries status, optimization number of fishing units and number of FADs. Some analysis methods applied in this study were linear goal programming (LGP, fishing power index (FPI, catch per unit of effort (CPUE, maximum sustainable yield (MSY, and analysis of fishing season using the Average Percentage Methods. The results showed that the tuna fisheries in

  13. The Southern Oscillation, Hypoxia, and the Eastern Pacific Tuna Fishery

    Science.gov (United States)

    Webster, D.; Kiefer, D.; Lam, C. H.; Harrison, D. P.; Armstrong, E. M.; Hinton, M.; Luo, L.

    2012-12-01

    The Eastern Pacific tuna fishery, which is one of the world's major fisheries, covers thousands of square kilometers. The vessels of this fishery are registered in more than 30 nations and largely target bigeye (Thunnus obesus), skipjack (Katsuwonus pelamis), and yellowfin (T. albacores) tuna. In both the Pelagic Habitat Analysis Module project, which is sponsored by NASA, and the Fishscape project, which is sponsored by NSF, we have attempted to define the habitat of the three species by matching a 50 year time series on fish catch and effort with oceanographic information obtained from satellite imagery and from a global circulation model. The fishery time series, which was provided by the Inter-American Tropical Tuna Commission, provided spatial maps of catch and effort at monthly time steps; the satellite imagery of the region consisted of sea surface temperature, chlorophyll, and height from GHRSST, SEAWiFS, and AVISO products, and the modeled flow field at selected depths was output from ECCO-92 simulations from 1992 to present. All information was integrated and analyzed within the EASy marine geographic information system. This GIS will also provides a home for the Fishscape spatial simulation model of the coupled dynamics of the ocean, fish, fleets, and markets. This model will then be applied to an assessment of the potential ecological and economic impacts of climate change, technological advances in fleet operations, and increases in fuel costs. We have determined by application of EOF analysis that the ECCO-2 simulation of sea surface height fits well with that of AVISO imagery; thus, if driven properly by predictions of future air-sea exchange, the model should provide good estimates of circulation patterns. We have also found that strong El Nino events lead to strong recruitment of all three species and strong La Nina events lead to weak recruitment. Finally, we have found that the general spatial distribution of the Eastern Pacific fishing grounds

  14. Biogenic amine content, histamine-forming bacteria, and adulteration of pork in tuna sausage products.

    Science.gov (United States)

    Kung, Hsien-Feng; Tsai, Yung-Hsiang; Chang, Shih-Chih; Hong, Tang-Yao

    2012-10-01

    Twenty-five tuna sausage products were purchased from retail markets in Taiwan. The rates of occurrence of biogenic amines, histamine-forming bacteria, and adulteration by pork and poultry were determined. The average content of various biogenic amines in all tested samples was less than 2.0 mg/100 g (Makaira nigricans (blue marlin).

  15. 78 FR 2273 - Canned Tuna Deviating From Identity Standard; Temporary Permit for Market Testing

    Science.gov (United States)

    2013-01-10

    ... introduces or causes the introduction of one or more of the test products into interstate commerce, but not... permit covers limited interstate marketing tests of products identified as ``no drain canned tuna... permit provides for the temporary marketing of a total 533,333 cases of 12 x 4 ounce cans (totaling 6.4...

  16. Improving the safety and quality of raw tuna fillets by x-ray irradiation

    Science.gov (United States)

    In this study, raw tuna fillet (25 g) samples were inoculated by immersing in 0.1% peptone water that contained 108-9 CFU ml-1 of a three-strain mixture of Salmonella enterica for 1 min. The samples were then air dried at 22 oC for 30 min and were packaged separately in sterilized bags prior to X-ra...

  17. Optimisation of the microencapsulation of tuna oil in gelatin-sodium hexametaphosphate using complex coacervation.

    Science.gov (United States)

    Wang, Bo; Adhikari, Benu; Barrow, Colin J

    2014-09-01

    The microencapsulation of tuna oil in gelatin-sodium hexametaphosphate (SHMP) using complex coacervation was optimised for the stabilisation of omega-3 oils, for use as a functional food ingredient. Firstly, oil stability was optimised by comparing the accelerated stability of tuna oil in the presence of various commercial antioxidants, using a Rancimat™. Then zeta-potential (mV), turbidity and coacervate yield (%) were measured and optimised for complex coacervation. The highest yield of complex coacervate was obtained at pH 4.7 and at a gelatin to SHMP ratio of 15:1. Multi-core microcapsules were formed when the mixed microencapsulation system was cooled to 5 °C at a rate of 12 °C/h. Crosslinking with transglutaminase followed by freeze drying resulted in a dried powder with an encapsulation efficiency of 99.82% and a payload of 52.56%. Some 98.56% of the oil was successfully microencapsulated and accelerated stability using a Rancimat™ showed stability more than double that of non-encapsulated oil. Copyright © 2014 Elsevier Ltd. All rights reserved.

  18. Pengaruh Penggunaan Formalin terhadap Kerusakan Protein Daging Ikan Tuna (Thunus sp)

    OpenAIRE

    Apituley, Daniel A. N.

    2012-01-01

    Formaldehyde is used on handling and processing of fishery product by some fisher at some coastal region of Indonesia was one that promotes protein oxidation and modification of protein structure of fish meat which give direct impact on nutritional quality of fish primarily the amino acids. This experiment was done in vitro experiment by using model of protein preparat of red and white meat of tuna. The purpose of this research was to study the effect of formaldehyde concentration and impact ...

  19. The Tunas Formation (Permian) in the Sierras Australes foldbelt, east central Argentina: evidence for syntectonic sedimentation in a foreland basin

    Science.gov (United States)

    Lopez-Gamundi, O. R.; Conaghan, P. J.; Rossello, E. A.; Cobbold, P. R.

    1995-04-01

    The Tunas Formation, extensively exposed in the Sierras Australes foldbelt of eastern central Argentina, completes the sedimentation of the Gondwanan (Late Carboniferous-Permian) sequence, locally known as the Pillahuincó Group. The underlying units of the Group show an integrated depositional history which can be explained in terms of glaciomarine sedimentation (Sauce Grande Formation) and postglacial transgression (Piedra Azul and Bonete Formations). This succession also has a rather uniform quartz-rich, sand-sized composition indicative of a cratonic provenance from the Tandilia Massif to the northeast. Early to Late Permian deformation folded and thrusted the southwestern basin margin (Sierras Australes) and triggered the deposition of a 1,500 m — thick, synorogenic prograding wedge, the Tunas Formation, in the adjacent foreland basin (Sauce Grande or Claromecó Basin). Sandstone detrital modes for the Tunas deposits show moderate to low contents of quartz and abundant lithics, mostly of volcanic and metasedimentary origin. Paleocurrents are consistently from the SW. Tuffs interbedded with sandstones in the upper half of Tunas Formation (Early — early Late? Permian) are interpreted as being derived from volcanic glass-rich tuffs settled in a body of water. Extensive rhyolitic ignimbrites and consanguineous airborne tuffaceous material erupted in the northern Patagonian region during that period. The age constraints and similarities in composition between these volcanics and the tuffaceous horizons present in the Sauce Grande, Parana and Karoo Basins suggest a genetic linkage between these two episodes. The intimate relationship between volcanic activity inboard of the paleo-Pacific margin, deformation in the adjacent orogenic belt and subsidence and sedimentation in the contiguous foreland basin constitutes a common motif in the Sauce Grande and Karoo Basins of southwestern Gondwana.

  20. IMPACT OF CLIMATE ANOMALY ON CATCH COMPOSITION OF NERITIC TUNA IN SUNDA STRAIT

    Directory of Open Access Journals (Sweden)

    Khairul Amri

    2013-12-01

    Full Text Available Tongkol komo/kawakawa (Euthynnus affinis and tenggiri (Scomberomerus guttatus are commonly caught by mini purseiners operated in Sunda Straits and landed in Labuan, West Java. This species inhabits coastal water and has preference staying in relatively warm water. Oceanography parameters commonly influencing the distribution of Euthynnus affinis are temperature, current, and salinity. The oceanography of Sunda Strait is influenced by water masses coming from the north that mainly originated from the Java Sea and water masses from the south mainly originated from Indian Ocean. The internal oceanography of Sunda Strait is also influenced by upwelling and monsoon as regional climate anomaly (ENSO and Indian Ocean Dipole Mode. This paper describes the influence of Dipole Mode (positive and negative event and ENSO (El- Nino/La-Nina to the catch dynamics of neritic tuna particularly in Sunda Straits waters. The results shown that regional climate anomaly influenced neritic tuna catch and its composition. The catches Euthynnus affinis in phase negative dipole mode or La-Nina were higher and dominated the catch composition of pelagic fishes of Sunda Strait. Similar situation also is showen by Scomberomorus commerson.

  1. Closing the Incentive Gap: The Role of Public and Private Actors in Governing Indonesia's Tuna Fisheries

    NARCIS (Netherlands)

    Bailey, M.L.; Miller, A.M.M.; Bush, S.R.; Zwieten, van P.A.M.; Wiryawan, B.

    2016-01-01

    Indonesia is one of the world's largest tuna producing countries, yet regulatory oversight remains weak and management is poor. Incentive-based approaches are a way to improve state-based resource management, but they often require strong government regulation. In this paper, we use principal–agent

  2. Kinetics of heat-induced color change of a tuna-vegetable mixture

    OpenAIRE

    Scherer, Erika; Sandoval, Aleida J; Barreiro, José A

    2009-01-01

    Heat induced color change kinetics in a tuna-vegetable mixture was evaluated by measuring color parameter "L" (Hunter-Lab) and 5-hydroxi-methyl-furfural (5-HMF) accumulation. For this purpose small reusable stainless steel TDT cans were used and the kinetic studies performed in a temperature range characteristic of thermal processing of low acid canned foods (110-125°C). The color parameter L was better described by a pseudo zero order while a pseudo first order reaction was found for 5-HMF a...

  3. EMBRYO DEVELOPMENT OF YELLOWFIN TUNA (Thunnus albacares AT DIFFERENT INCUBATION TEMPERATURE

    Directory of Open Access Journals (Sweden)

    Jhon Harianto Hutapea

    2007-12-01

    Full Text Available The experiment was conducted in order to figure out the effect of incubation temperature on embryonic development of yellowfin tuna, Thunnus albacares eggs. Five different incubation temperatures were applied as treatments, i.e.: 24°C, 26°C, 28°C, 30°C, and 32°C with 3 replicate each. Ten micro plates with lid (IWAKI, Japan were used; each has 6 well and 10 mL volumes. Five micro plates were used for experiment and five for balance on shaker. Three well of each micro plate were filled with 8 mL ultra violet sterilized sea water and 50 fertilized eggs. Temperature was set using Multi Thermo Incubator which has 5 level racks. Temperatures were set from the lowest to the highest on bottom to upper rack order. To maintain eggs dispersed in the medium, shaker on each rack was operated at 150 RPM. The embryo was monitored every 30-60 minutes depends on embryonic stage development using Microscope which was connected to Digital Camera DXM 1200F. Image analyses by Image Analyzer Program. The results showed, incubation temperature was significantly affect (P<0.05 embryonic development and hatching time of yellowfin tuna (Thunnus albacares eggs. Optimum incubation temperature for embryo development and hatching was 28°C. Decreased on incubation temperature slows down embryo development at all stages, and vice versa, increased on incubation temperature accelerates embryo development.

  4. Genetic structuring and migration patterns of Atlantic bigeye tuna, Thunnus obesus (Lowe, 1839)

    OpenAIRE

    Gonzalez, Elena G; Beerli, Peter; Zardoya, Rafael

    2008-01-01

    Abstract Background Large pelagic fishes are generally thought to have little population genetic structuring based on their cosmopolitan distribution, large population sizes and high dispersal capacities. However, gene flow can be influenced by ecological (e.g. homing behaviour) and physical (e.g. present-day ocean currents, past changes in sea temperature and levels) factors. In this regard, Atlantic bigeye tuna shows an interesting genetic structuring pattern with two highly divergent mitoc...

  5. Rasgos epidemiológicos de ciegos y débiles visuales por retinosis pigmentaria en la provincia Las Tunas Epidemiologic traits of the blind and visually handicapped due to retinitis pigmantosa in the province of Las Tunas

    Directory of Open Access Journals (Sweden)

    Luisa González Hess

    2003-06-01

    Full Text Available Se estudiaron 325 pacientes con el diagnóstico retinosis pigmentaria en la provincia Las Tunas. De ellos, se encontró que el 24,9 y el 10 % eran ciegos y débiles visuales respectivamente, donde se obtuvo una tasa de ciegos por retinosis pigmentaria de 1,45 x 10 000 habitantes y de débiles visuales de 0,6 x 10 000 habitantes. El tipo de herencia que predominó en ambos grupos fue la autosómica recesiva.325 patients with the diagnosis of retinitis pigmentosa were studied in the province of Las Tunas. Of them, it was found that 24.9 % and 10 % were blind and visually handicapped, respectively. A rate of blind patients caused by retinitis pigmentosa of 1.45 x 10 000 inhabitants and of visually handicapped of 0.6 x 10 000 inhabitants was obtained. The type of inheritance predominating in both groups was the autosomal recessive inheritance.

  6. Fisher-Level Decision Making to Participate in Fisheries Improvement Projects (FIPs) for Yellowfin Tuna in the Philippines

    NARCIS (Netherlands)

    Tolentino-Zondervan, F.; Berentsen, P.B.M.; Bush, S.R.; Oude Lansink, A.G.J.M.

    2016-01-01

    This study identifies the capabilities needed by small-scale fishers to participate in Fishery Improvement Projects (FIPs) for yellowfin tuna in the Philippines. The current literature provides little empirical evidence on how different models, or types of FIPs, influence the participation of

  7. Microbiological stability of canned tuna produced in Italy and in non-European countries

    Directory of Open Access Journals (Sweden)

    Francesco Casalinuovo

    2015-03-01

    Full Text Available The results of a study on the microbiological stability of canned tuna produced by Italian companies and similar canned products manufactured in countries outside Europe are reported herein. The study involved 38 samples of canned tuna of various brands, of which 14 were produced by companies outside Europe and 24 by Italian companies. Qualitative and quantitative microbiological tests were conducted for the following parameters: bacterial colony counts at 30°C, total coliforms, total Enterobacteriaceae, sulphite-reducing anaerobes, Salmonella spp., Bacillus cereus, Escherichia coli, Staphylococcus aureus, yeasts and molds. Bacterial loads and mold contamination were respectivelyin found in 8/14 (57% samples from outside EU and 7/24 (29% Italian samples. The bacterial flora was represented by Gram-positive bacteria (Staphylococcus warneri, Staphylococcus lentus, Streptococcus mitis, Enterococcus faecalis, Leuconostoc mesenteroides, Gram-negative bacteria (Sphingomonas paucimobilis, Acinetobacter iwoffii, Rhizobium radiobacter, spore-forming bacteria (Bacillus vallismortis, while the fungal species was represented by Penicillium spp., Rhizopus spp., Rhodotorula spp. and Alternaria spp. Excluding anomalies in the thermal treatment process of products and any contamination after treatment, the contaminations encountered in both cases were most likely due to insufficient production quality standards and the quality of the raw material used. These results may require a redefinition of the concept of commercial stability as hitherto stated.

  8. Physicochemical evaluation of the effects of irradiation and evisceration on the conservation of refrigerated blackfin tuna (Thunnus atlanticus)

    Energy Technology Data Exchange (ETDEWEB)

    Monteiro, Maria L.G.; Marsico, Eliane T. [Universidade Federal Fluminense (UFF), Niteroi, RJ (Brazil). Faculdade de Veterinaria. Dept. de Tecnologia de Alimentos], e-mail: marialuciaguerra@yahoo.com.br, e-mail: elianee@vm.uff.br; Vital, Helio C. [Centro Tecnologico do Exercito (CTEx), Rio de Janeiro, RJ (Brazil). Secao de Defesa Nuclear], e-mail: vital@ctex.eb.br

    2009-07-01

    Tuna is among the most traded fishes in Brazil, however efficiently delaying its fast deterioration is still a major practical challenge. Irradiation has been proposed as a safe and powerful alternative tool for conservation of seafood. This work investigated the effects of irradiation on the physicochemical quality of refrigerated blackfin tuna (Thunnus atlanticus). Analyses of pH, total volatile bases (TVB-N), ammonia and biogenic amines (histamine, cadaverine and putrescine) were performed in order to determine the degree of conservation. The samples were subjected to four different treatments aiming at evaluating the efficiency of irradiation, evisceration and both combined. The figures measured for those parameters, all of them related to the degree of conservation, were found to increase with time regardless of the treatment. In addition, data for irradiated samples remained consistently lower than for unirradiated ones, indicating a better level of preservation that led to an extended shelf life of 14 days. In contrast, excessive levels of those indicators of degradation were found in unirradiated samples after 7 to 10 days of storage. In addition, some evidence was found that evisceration slightly increased quality, consequently promoting a small extension in shelf life of unirradiated samples. Finally, it can be concluded with basis on the results of the physicochemical parameters studied that treatment of fresh refrigerated blackfin tuna by irradiation with 2.5 kGy efficiently preserved freshness and extended the shelf life of the product from 7 to 14 days. (author)

  9. Physicochemical evaluation of the effects of irradiation and evisceration on the conservation of refrigerated blackfin tuna (Thunnus atlanticus)

    International Nuclear Information System (INIS)

    Monteiro, Maria L.G.; Marsico, Eliane T.; Vital, Helio C.

    2009-01-01

    Tuna is among the most traded fishes in Brazil, however efficiently delaying its fast deterioration is still a major practical challenge. Irradiation has been proposed as a safe and powerful alternative tool for conservation of seafood. This work investigated the effects of irradiation on the physicochemical quality of refrigerated blackfin tuna (Thunnus atlanticus). Analyses of pH, total volatile bases (TVB-N), ammonia and biogenic amines (histamine, cadaverine and putrescine) were performed in order to determine the degree of conservation. The samples were subjected to four different treatments aiming at evaluating the efficiency of irradiation, evisceration and both combined. The figures measured for those parameters, all of them related to the degree of conservation, were found to increase with time regardless of the treatment. In addition, data for irradiated samples remained consistently lower than for unirradiated ones, indicating a better level of preservation that led to an extended shelf life of 14 days. In contrast, excessive levels of those indicators of degradation were found in unirradiated samples after 7 to 10 days of storage. In addition, some evidence was found that evisceration slightly increased quality, consequently promoting a small extension in shelf life of unirradiated samples. Finally, it can be concluded with basis on the results of the physicochemical parameters studied that treatment of fresh refrigerated blackfin tuna by irradiation with 2.5 kGy efficiently preserved freshness and extended the shelf life of the product from 7 to 14 days. (author)

  10. 77 FR 44161 - Atlantic Highly Migratory Species; 2012 Atlantic Bluefin Tuna Quota Specifications

    Science.gov (United States)

    2012-07-27

    ... order to stay within the ICCAT-recommended U.S. quota, close directed BFT fisheries in the event that... 5, 2011) to consider information about the Deepwater Horizon/BP oil spill and alleged illegal... and use the best available science on the effects of the Deepwater Horizon/BP oil spill and the...

  11. 77 FR 15712 - Atlantic Highly Migratory Species; 2012 Atlantic Bluefin Tuna Quota Specifications

    Science.gov (United States)

    2012-03-16

    ... annual meeting, ICCAT recommended a TAC of 1,750 mt annually for 2011 and for 2012, inclusive of dead... 868.6 mt, which is 175 mt less than the amount of quota (inclusive of dead discards) allowed under... 182.0 SUBQUOTAS: SUBQUOTAS: School 94.9 School 94.9 Reserve 17.6 Reserve 17.6 North 36.5 North 36.5...

  12. 78 FR 21584 - Atlantic Highly Migratory Species; 2013 Atlantic Bluefin Tuna Quota Specifications

    Science.gov (United States)

    2013-04-11

    ... and for 2012, inclusive of dead discards (ICCAT Recommendation 10-03--Supplemental Recommendation by... 858.4 mt, which is 185.2 mt less than the amount of quota (inclusive of dead discards) allowed under... locations will be physically accessible to people with disabilities. Requests for sign language...

  13. 75 FR 30732 - Atlantic Highly Migratory Species; 2010 Atlantic Bluefin Tuna Quota Specifications

    Science.gov (United States)

    2010-06-02

    ... Specifications AGENCY: National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration.... Response: To monitor the recreational BFT fishery, NMFS depends primarily on the Large Pelagics Survey (LPS... RFA requires the Agency to state the objective of and need for the rule. The objective of this rule is...

  14. Global pollution monitoring of polychlorinated dibenzo-p-dioxins (PCDDs), furans (PCDFs) and coplanar polychlorinated biphenyls (coplanar PCBs) using skipjack tuna as bioindicator

    Energy Technology Data Exchange (ETDEWEB)

    Ueno, D.; Watanabe, M.; Subraminian, A.N.; Tanabe, S. [Ehime Univ. (Japan); Tanaka, H. [National Research Inst. of Fisheries and Environment of Inland Sea (Japan); Fillmann, G. [Fundacao Univ. Federal do Rio Grande (Brazil); Lam, P.K.S.; Zheng, G.J. [City Univ. of Hong Kong (Hong Kong); Muchtar, M.; Razak, H. [Indonesian Inst. of Sciences (Indonesia); Prudente, M. [De La Salle Univ. (Philippines); Chung, K. [Sungkyunkwan Univ. (Korea)

    2004-09-15

    Worldwide contamination by dioxins and related compounds, such as polychlorinated dibenzop- dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs) and coplanar polychlorinated biphenyls (coplanar PCBs) representing persistent organic pollutants (POPs) have been of great concern due to their persistency in the environment, highly bioaccumulative nature and adverse effects on wildlife and humans. Several studies on air samples and marine organisms from open seas suggested a long range transport of these compounds through atomosphere. Although several investigators have monitored dioxins pollution in localized areas, information on the global distribution of dioxins which can explain their atomospheric transport, behavior and fate are still limited. Skipjack tuna is primarily distributed from offshore waters to open seas in tropical and temperate regions almost all over the world such as the Pacific, Atlantic and Indian Oceans6. This species is an important commercial fish and its ecology and biology has been well studied. Moreover, suitability of skipjack tuna for global monitoring of organic pollutants (DDTs, HCHs PBDEs, organotins, etc.) has been established in our previous report, indicating that migration pattern, growth stage and sex of these animals have no or little effect on the variations of POPs residue levels in their bodies. Hence this species reflected POPs pollution levels in seawater when and where they were collected, caused by the rapid equilibrium partitioning between seawater and body lipid. These facts made skipjack tuna a suitable bioindicator for monitoring the contamination status of dioxins and related compounds. The objectives of this study are to elucidate the global distribution of dioxins (PCDD/Fs and coplanar PCBs) in offshore waters and open seas, and to understand the transport and behaviour of these chemicals using skipjack tuna as bioindicator.

  15. Genetic structuring and migration patterns of Atlantic bigeye tuna, Thunnus obesus (Lowe, 1839

    Directory of Open Access Journals (Sweden)

    Beerli Peter

    2008-09-01

    Full Text Available Abstract Background Large pelagic fishes are generally thought to have little population genetic structuring based on their cosmopolitan distribution, large population sizes and high dispersal capacities. However, gene flow can be influenced by ecological (e.g. homing behaviour and physical (e.g. present-day ocean currents, past changes in sea temperature and levels factors. In this regard, Atlantic bigeye tuna shows an interesting genetic structuring pattern with two highly divergent mitochondrial clades (Clades I and II, which are assumed to have been originated during the last Pleistocene glacial maxima. We assess genetic structure patterns of Atlantic bigeye tuna at the nuclear level, and compare them with mitochondrial evidence. Results We examined allele size variation of nine microsatellite loci in 380 individuals from the Gulf of Guinea, Canary, Azores, Canada, Indian Ocean, and Pacific Ocean. To investigate temporal stability of genetic structure, three Atlantic Ocean sites were re-sampled a second year. Hierarchical AMOVA tests, RST pairwise comparisons, isolation by distance (Mantel tests, Bayesian clustering analyses, and coalescence-based migration rate inferences supported unrestricted gene flow within the Atlantic Ocean at the nuclear level, and therefore interbreeding between individuals belonging to both mitochondrial clades. Moreover, departures from HWE in several loci were inferred for the samples of Guinea, and attributed to a Wahlund effect supporting the role of this region as a spawning and nursery area. Our microsatellite data supported a single worldwide panmictic unit for bigeye tunas. Despite the strong Agulhas Current, immigration rates seem to be higher from the Atlantic Ocean into the Indo-Pacific Ocean, but the actual number of individuals moving per generation is relatively low compared to the large population sizes inhabiting each ocean basin. Conclusion Lack of congruence between mt and nuclear evidences, which

  16. Genetic structuring and migration patterns of Atlantic bigeye tuna, Thunnus obesus (Lowe, 1839).

    Science.gov (United States)

    Gonzalez, Elena G; Beerli, Peter; Zardoya, Rafael

    2008-09-17

    Large pelagic fishes are generally thought to have little population genetic structuring based on their cosmopolitan distribution, large population sizes and high dispersal capacities. However, gene flow can be influenced by ecological (e.g. homing behaviour) and physical (e.g. present-day ocean currents, past changes in sea temperature and levels) factors. In this regard, Atlantic bigeye tuna shows an interesting genetic structuring pattern with two highly divergent mitochondrial clades (Clades I and II), which are assumed to have been originated during the last Pleistocene glacial maxima. We assess genetic structure patterns of Atlantic bigeye tuna at the nuclear level, and compare them with mitochondrial evidence. We examined allele size variation of nine microsatellite loci in 380 individuals from the Gulf of Guinea, Canary, Azores, Canada, Indian Ocean, and Pacific Ocean. To investigate temporal stability of genetic structure, three Atlantic Ocean sites were re-sampled a second year. Hierarchical AMOVA tests, RST pairwise comparisons, isolation by distance (Mantel) tests, Bayesian clustering analyses, and coalescence-based migration rate inferences supported unrestricted gene flow within the Atlantic Ocean at the nuclear level, and therefore interbreeding between individuals belonging to both mitochondrial clades. Moreover, departures from HWE in several loci were inferred for the samples of Guinea, and attributed to a Wahlund effect supporting the role of this region as a spawning and nursery area. Our microsatellite data supported a single worldwide panmictic unit for bigeye tunas. Despite the strong Agulhas Current, immigration rates seem to be higher from the Atlantic Ocean into the Indo-Pacific Ocean, but the actual number of individuals moving per generation is relatively low compared to the large population sizes inhabiting each ocean basin. Lack of congruence between mt and nuclear evidences, which is also found in other species, most likely reflects

  17. Historia del Boxeo en la provincia de las Tunas hasta 1990

    OpenAIRE

    Etián Jiménez Espinosa; Guillermo Montero Quesada; Luís Fidel Velásquez Ortega

    2009-01-01

    La presente investigación hace un estudio sobre los antecedentes, génesis, evolución y desarrollo del boxeo en la provincia en Las Tunas, el cual se realiza a partir de una periodización hasta nuestros días. El estudio responde a una de las problemáticas más complejas y necesarias del territorio, que responde a la carencia de información bibliográfica para impartir con la calidad pertinente la asignatura Historia del Deporte, en todos sus ámbitos – internacional, nacional y local- y con un en...

  18. Certification of total arsenic, dimethylarsinic acid and arsenobetaine contents in a tuna fish powder (BCR-CRM 627)

    DEFF Research Database (Denmark)

    Lagarde, F.; Amran, M. B.; Leroy, M. J. F.

    1999-01-01

    Tuna fishes were collected in the Straits of Messina (Italy), were dissected and dorsal muscles minced, freeze-dried, ground and sieved. The obtained powder was stabilised by gamma-irradiation and filled into brown glass bottles. The homogeneity and stability at +20 degrees C and +40 degrees C we...

  19. Heavy metal content and molecular species identification in canned tuna: Insights into human food safety.

    Science.gov (United States)

    Pappalardo, Anna Maria; Copat, Chiara; Ferrito, Venera; Grasso, Alfina; Ferrante, Margherita

    2017-05-01

    Canned tuna in olive oil and in brine of the most popular brands sold in Italian markets were analyzed to verify the authentication of transformed products, with the aim to unveil commercial frauds due to the substitutions of high value species with species of low commercial value, and to assess the health risk of consumers related to cadmium (Cd), lead (Pb) and mercury (Hg) contents. Species authentication was evaluated with amplification of COI DNA barcode and confirmed the declared species. Among tested metals, Hg had the highest concentrations, followed by Cd and Pb. None of the tested samples surpassed the European regulatory limits no. 1881/2006 fixed for Hg and Pb, whereas one batch of canned tuna in olive oil exceeded standard for Cd. Risk for human health was evaluated by the metals daily intake and target hazard quotient (THQ). As a result, Cd and Pb did not exceed the toxicological reference values established by World Health Organization (WHO) and the Environmental Protection Agency (EPA). Conversely, Hg content suggests a consumption no more than once a week and a continuous surveillance of this fishery products for consumer protection.

  20. Genetic variation in skipjack tuna Katsuwonus pelamis (L.) using PCR-RFLP analysis of the mitochondrial DNA D-loop region

    Digital Repository Service at National Institute of Oceanography (India)

    Menezes, M.R.; Ikeda, M.; Taniguchi, N.

    Journal of Marine and Freshwater Research 34, 231–251. Sharp, G. D. & Pirages, S. W. (1978). The distribution of enzymes of red, white and heart muscle: distributional characteristics in selected scombrid fishes. In The Physiological Ecology of Tunas...

  1. Assessment of health risk of exposure to mercury through intake under canned tuna in health registration process period January 2010-December 2011

    International Nuclear Information System (INIS)

    Carrillo, M.; Tovar, M.; Alvarez, J.; Arraez, M.; Hordziejewicz, I.; Loreto, I.

    2013-01-01

    The power point presentation is about: Assessing the health risk due to exposure to mercury through ingestion canned tuna under sanitary registration process in the country, using the risk assessment tool recommended by the Codex Alimentarius establishing safety according to the use of local diets. The analytical method appied was Atomic Absorption Spectrophotometry Amalgamation (SS TDA AS). As a recommendation was important to maintain an ongoing program of monitoring of mercury in tuna as being a highly recommended food as being excellent source of protein and fatty acids beneficial to health can also be a source of mercury poisoning in cases of people who have a high consumption thereof in the diet

  2. Physicochemical and sensory characterization of refined and deodorized tuna (Thunnus albacares) by-product oil obtained by enzymatic hydrolysis.

    Science.gov (United States)

    de Oliveira, Dayse A S B; Minozzo, Marcelo G; Licodiedoff, Silvana; Waszczynskyj, Nina

    2016-09-15

    In this study, the effects of chemical refining and deodorization on fatty acid profiles and physicochemical and sensory characteristics of the tuna by-product oil obtained by enzymatic hydrolysis were evaluated. Enzymatic extraction was conducted for 120 min at 60 °C and pH 6.5 using Alcalase at an enzyme-substrate ratio of 1:200 w/w. The chemical refining of crude oil consisted of degumming, neutralization, washing, drying, bleaching, and deodorization; deodorization was conducted at different temperatures and processing times. Although chemical refining was successful, temperature and chemical reagents favored the removal of polyunsaturated fatty acids (PUFA) from the oil. Aroma attributes of fishy odor, frying odor, and rancid odor predominantly contributed to the sensory evaluation of the product. Deodorization conditions of 160 °C for 1h and 200 °C for 1h were recommended for the tuna by-product oil, which is rich in PUFA. Copyright © 2016 Elsevier Ltd. All rights reserved.

  3. Incidencia prenatal de los defectos congénitos en Las Tunas

    Directory of Open Access Journals (Sweden)

    Juana Lupe Muñoz Callol

    2015-04-01

    Full Text Available Los defectos congénitos son la principal causa de morbilidad y mortalidad neonatal en casi todo el mundo. La introducción del diagnóstico prenatal y el establecimiento de estrategias preventivas en la atención primaria de salud han logrado la disminución de la prevalencia al nacimiento de defectos congénitos y de la mortalidad infantil en nuestro país. Se realizó un estudio descriptivo de corte transversal de los casos diagnosticados o confirmados prenatalmente en la consulta de genética provincial, con el objetivo de describir la incidencia prenatal de los defectos congénitos en la provincia Las Tunas, durante el período de enero 2013 a mayo 2014. De un universo de 9462 embarazadas de la provincia, en el periodo de estudio; se escogió una muestra de 110 gestantes que presentaron defectos fetales en diferentes órganos y sistemas. La información se obtuvo del registro provincial, donde se analizaron las variables: comportamiento de defectos congénitos por áreas de salud, edad de las madres por defectos congénitos, defectos congénitos por programas prenatales y los defectos congénitos por sistemas. El mayor número de casos se diagnosticó en el segundo trimestre del embarazo, siendo el sistema cardiovascular donde se encontró un número mayor de defectos congénitos, seguido del sistema digestivo, genitourinarias y del sistema nervioso central. Las edades maternas estuvieron comprendidas entre 21 y 30 años, siendo el municipio Tunas el que aportó un número significativo de afectados

  4. Human exposure to lead, cadmium and mercury through fish and seafood product consumption in Italy: a pilot evaluation.

    Science.gov (United States)

    Pastorelli, A A; Baldini, M; Stacchini, P; Baldini, G; Morelli, S; Sagratella, E; Zaza, S; Ciardullo, S

    2012-01-01

    The presence of selected toxic heavy metals, such as cadmium (Cd), lead (Pb) and mercury (Hg), was investigated in fish and seafood products, namely, blue mussel, carpet shell clam, European squid, veined squid, deep-water rose shrimp, red mullet, European seabass, gilthead seabream, Atlantic cod, European hake, Atlantic bluefin tuna and swordfish so as to assess their human exposure through diet. Metals were detected by quadrupole inductively coupled plasma mass spectrometry (Q-ICP-MS) and hydride generation atomic absorption spectrometry (Hg-AAS). Measurements of Cd, Pb and Hg were performed by means of analytical methods validated in compliance with UNI CEI EN ISO/IEC 17025 [2005. General requirements for the competence of testing and calibration laboratories. Milano (Italy): UNI Ente Nazionale Italiano di Unificazione]. The exposure assessment was undertaken matching the levels of Cd, Pb and total Hg with consumption data related to fish and seafood products selected for this purpose. In order to establish human health implications, the estimated weekly intakes (EWIs) for Cd, Pb and Hg were compared with the standard tolerable weekly intakes (TWI) for Cd and provisional tolerable weekly intakes (PTWIs) for Pb and Hg stipulated by the European Food Safety Authority (EFSA) and the Food and Agriculture Organization/World Health Organization (FAO/WHO) Joint Expert Committee on Food Additives (JECFA). The found metal concentrations were largely below the maximum levels (MLs) established at the European Union level with the exception of Cd. This metal exceeded the MLs in squid, red mullet, European hake and Atlantic cod. Squid and blue mussel showed the highest Pb concentrations which accounted for 60% and 10% of the MLs, respectively. Highest Hg levels were found in predatory fish. The concentrations of Hg in swordfish, Atlantic bluefin tuna and red mullet accounted for 50%, 30% and 30% of the MLs, respectively. The EWIs for Cd, Pb and Hg related to the consumption

  5. Report on the intercomparison run IAEA-352 radionuclides in tuna fish flesh

    International Nuclear Information System (INIS)

    Ballestra, S.; Vas, D.; Lopez, J.J.; Noshkin, V.

    1990-08-01

    The results of an intercomparison exercise on a sample of tuna fish flesh from the Mediterranean Sea, IAEA-352, designed for the determination of artificial and natural radionuclides levels, are reported. The data from 63 laboratories from 31 countries have been evaluated. The following are the recommended values, with confidence intervals, for the most frequently measured radionuclides (Reference data: 1 January 1989): 137 Cs 2.7 Bq kg -1 , 90 Sr 0.2 Bq Kg -1 , 40 K 391 Bq Kg -1 , 210 Pb 0.6 Bq Kg -1 , 210 Po 2.2 Bq Kg -1 . Tabs

  6. Characterization of tuna cooking effluents generated in seafood canning industries; Caracterizacion de los efluentes de coccion de atum generados en la industrias conserveras de productos marinos

    Energy Technology Data Exchange (ETDEWEB)

    Mendez Paz, D.; Torres Ayaso, A. B.; Vieites Baptista de Sousa, J. M.

    2006-07-01

    Tuna cooking effluents from different factories were analyzed, in this work. It has been analyzed effluents form water cooking and steam cooking processes. Steam cooking effluents are more appropriate for protein recovery due to the higher protein concentrations (up to 10 g/l, in some cases) and lower volume. Besides, steam cooking effluents, chemical oxygen demand (COD) and total Kjeldahl nitrogen (TKN) were up to 50 and 5 g/l, respectively. Different correlations between the main parameters the main parameters have been found, for example protein and TKN concentrations of a tuna cooking effluent can be estimated from COD concentrations. (Author) 9 refs.

  7. Polimorfisme Enzim Glucose-6-Phosphate Isomerase pada Tiga Populasi Tuna Sirip Kuning (Thunnus albacares)

    OpenAIRE

    Permana, Gusti Ngurah; Hutapea, Jhon H.; Moria, Sari Budi; Haryanti, Haryanti

    2006-01-01

    Samples of yellowfin tuna (Thunnus albacares) were taken from three locations Bali, North Sulawesi and North Maluku. The glucose-6-phosphate isomerase (GPI) was analyzed from liver using allozyme electrophoresis method. Polymorphism of GPI enzyme was observed and four alleles (A, B ,C, D) were found in Bali population, three alleles (A,B,C) were found in North Maluku and North Sulawesi populations. Heterozygosity values, from Bali, North Maluku and North Sulawesi were 0.419; 0.417; 0.143 resp...

  8. Towards sustainable mobile systems configurations: Application to a tuna purse seiner.

    Science.gov (United States)

    García Rellán, A; Vázquez Brea, C; Bello Bugallo, P M

    2018-08-01

    Fishing is one of the most important marine activities. It contributes to both overfishing and marine pollution, the two main threats to the ocean environment. In this context, the aim of this work is to investigate and validate methodologies for the identification of more sustainable operating configurations for a tuna purse seiner. The proposed methodology is based on a previous one applied to secondary industrial systems, taking into account the Integrated Pollution Prevention and Control focus, developed for the most potentially industrial polluting sources. The idea is to apply the same type of methodologies and concepts used for secondary industrial punctual sources, to a primary industrial mobile activity. This methodology combines two tools: "Material and Energy Flow Analysis" (a tool from industrial metabolism), and "Best Available Techniques Analysis". The first provides a way to detect "Improvable Flows" into de system, and the second provides a way to define sustainable options to improve them. Five main Improvable Flows have been identified in the selected case study, the activity of a purse seiner, most of them related with energy consumption and air emission, in different stages of the fishing activity. Thirty-one Best Available Techniques candidates for the system have been inventoried, that potentially could improve the sustainability of the activity. Seven of them are not implemented yet to the case study. The potential improvements of the system proposed by this work are related to energy efficiency, waste management, prevention and control of air emissions. This methodology demonstrates to be a good tool towards sustainable punctual systems, but also towards sustainable mobile systems such as the fishing activity in oceans, as the tuna purse seiner validated here. The practical application of the identified technologies to fishing systems will contribute to prevent and reduce marine pollution, one of the greatest threats of today's oceans

  9. Shark predation on migrating adult American eels (Anguilla rostrata in the Gulf of St. Lawrence.

    Directory of Open Access Journals (Sweden)

    Mélanie Béguer-Pon

    Full Text Available In an attempt to document the migratory pathways and the environmental conditions encountered by American eels during their oceanic migration to the Sargasso Sea, we tagged eight silver eels with miniature satellite pop-up tags during their migration from the St. Lawrence River in Québec, Canada. Surprisingly, of the seven tags that successfully transmitted archived data, six were ingested by warm-gutted predators, as observed by a sudden increase in water temperature. Gut temperatures were in the range of 20 to 25°C-too cold for marine mammals but within the range of endothermic fish. In order to identify the eel predators, we compared their vertical migratory behavior with those of satellite-tagged porbeagle shark and bluefin tuna, the only endothermic fishes occurring non-marginally in the Gulf of St. Lawrence. We accurately distinguished between tuna and shark by using the behavioral criteria generated by comparing the diving behavior of these two species with those of our unknown predators. Depth profile characteristics of most eel predators more closely resembled those of sharks than those of tuna. During the first days following tagging, all eels remained in surface waters and did not exhibit diel vertical migrations. Three eels were eaten at this time. Two eels exhibited inverse diel vertical migrations (at surface during the day during several days prior to predation. Four eels were eaten during daytime, whereas the two night-predation events occurred at full moon. Although tagging itself may contribute to increasing the eel's susceptibility to predation, we discuss evidence suggesting that predation of silver-stage American eels by porbeagle sharks may represent a significant source of mortality inside the Gulf of St. Lawrence and raises the possibility that eels may represent a reliable, predictable food resource for porbeagle sharks.

  10. Formulación de una mermelada a partir de pulpa y cáscara de tunas (Opuntia spp. elaborada a nivel planta piloto Formulación de una mermelada a partir de pulpa y cáscara de tunas (Opuntia spp. elaborada a nivel planta piloto

    Directory of Open Access Journals (Sweden)

    José Luis Magaña Ramírez

    2012-02-01

    Full Text Available After a series of experimental tests of jam pulp-based and peel of prickly pear fruit at a laboratory level, generated from previous research projects, and based on results of sensory evaluation, microbiological and physicochemical analysis, it was selected a formulation for a jam from a mixture of pulp and peel of prickly pear fruit “reyna” variety, and “xoconostle” prickly pear fruit pulp for processing at the pilot platform. The jam produced was characterized by physicochemical analysis and microbiological. In the physicochemical analysis, it was included the determination of dietetic fiber (4.35 g dietetic fiber/15 g jam, being one of the most important evaluation, which value comes mainly from the skin of prickly pear fruit. From the physicochemical analysis, it was designed a label for the jam produced. Based on the specifications required by the “Norma Oficial Mexicana”, the product can be considered suitable for consumption and marketing purposes. Después de una serie de pruebas experimentales de mermeladas a base de pulpa y cás­cara de tunas a nivel laboratorio, generados de proyectos de investigación anteriores, y con base en resultados de evaluación sensorial, análisis microbiológico y fisicoquímico, se seleccionó una formulación de mermelada a partir de una mezcla de pulpa y cáscara de tuna variedad reyna, y pulpa de tuna variedad xoconostle para su procesamiento a nivel planta piloto. La mermelada elaborada fue caracterizada mediante análisis fisicoquímico y microbiológico. Dentro de los análisis fisicoquímicos se incluyó la determinación de Fibra Dietética (4.35 g de fibra dietética/15 g de mermelada, siendo éste uno de los análisis más importantes, cuyo valor procede principalmente de la cáscara de las tunas. Basados en las especificaciones exigidas por la Norma Oficial Mexicana, el producto puede considerarse apto para su consumo y para propósitos de comercialización.

  11. Anaerobic co-digestion of animal waste: swine manure and tuna fish waste

    Energy Technology Data Exchange (ETDEWEB)

    Otero, L.; Alvarez, J. A.; Lema, J. M.

    2009-07-01

    Anaerobic digestion has become an established and proven technology for the treatment of solid wastes. Co-digestion offers several possible ecological, technology and economical advantages. Anaerobic co-digestion can increase CH{sub 4} production of manure diesters in a 50-200% according to the operation conditions and the co-substrates used. Last September 2007, PROBIOGAS project started up with the objective of improving the production and use of biogas from co-digestion of farming, agricultural and industrial waste. Our research group takes part in the study of co-digestion of swine manure firstly with tuna fish waste and secondly with glycerine (bio diesel production waste). (Author)

  12. Mercury accumulation in Yellowfin tuna (Thunnus albacares) with regards to muscle type, muscle position and fish size.

    Science.gov (United States)

    Bosch, Adina C; O'Neill, Bernadette; Sigge, Gunnar O; Kerwath, Sven E; Hoffman, Louwrens C

    2016-01-01

    The concentrations and relationships between individual mercury species and total mercury were investigated in different muscle parts and sizes of Yellowfin tuna (Thunnus albacares). Fourteen Yellowfin tuna caught in the South Atlantic off the coast of South Africa had an average total Hg (tHg) concentration of 0.77 mg/kg wet weight. No differences were detected (p > 0.05) in tHg, MethylHg (MeHg) or inorganic Hg (iHg) accumulation among the four white muscle portions across the carcass, but both tHg and iHg were found in higher concentrations (p < 0.001) in dark muscle than white muscle. Positive linear correlations with fish weight were found for both tHg (r = 0.79, p < 0.001) and MeHg (r = 0.75, p < 0.001) concentrations. A prediction model was formulated to calculate toxic MeHg concentrations from measured tHg concentrations and fish weight (cMeHg = 0.073 + 1.365 · tHg-0.008 · w). As sampling sites and subsampling methods could affect toxicity measurements, we provide recommendations for sampling guidelines. Copyright © 2015 Elsevier Ltd. All rights reserved.

  13. PENYULUHAN METODE PAP SMEAR TERHADAP TINGKAT PENGETAHUAN DAN SIKAP WANITA TUNA SUSILA DALAM PENDETEKSIAN KANKER SERVIKS

    Directory of Open Access Journals (Sweden)

    Ismi Wulandari AS

    2015-03-01

    Full Text Available Abstract: The Effectiveness Of Pap smear Test’s Counseling Regarding To The Level Of Knowledge And Behaviour In Prostitution Worker For Detection Of Cervical Cancer In Bintang Mas Kubu Raya 2014. The aim of this study is to evaluate the effectivity of counseling toward knowledge and behavior. in prostitution worker about pap smear and cervical cancer. This research was quasi-experimental with one group pretest-postest design. There are 38 respondents. McNemar test showed there are significant. improvement of knowledge (p<0.05, and significance behavior change (p<0.05 in all respondents before and after counseling. Keyword : knowledge, behaviour, cervical cancer, pap smear Abstrak : Penyuluhan Metode Pap smear Terhadap Tingkat Pengetahuan Dan Sikap Wanita Tuna Susila Dalam Pendeteksian Kanker Serviks. Tujuan penelitian ini yaitu untuk melihat efektivitas terhadap pengetahuan dan sikap melalui penyuluhan mengenai pap smear kepada para wanita tuna susila. Rancangan penelitian yang digunakan dalam penelitian ini adalah quasi eksperimental dengan rancangan one group pretest-postest design. Besar sampel berjumlah 38 orang. Hasil menunjukkan uji McNemar menunjukkan terdapat signifikansi yang bermakna untuk pengetahuan (p < 0,05 dan signifikansi untuk perubahan sikap (p<0.05 pada responden sebelum dan setelah penyuluhan. Kata kunci : pengetahuan, sikap, kanker serviks, pap smear

  14. BIOSORCIÓN DE Cd, Pb y Zn POR BIOMASA PRETRATADA DE ALGAS ROJAS, CÁSCARA DE NARANJA Y TUNA

    Directory of Open Access Journals (Sweden)

    Lissette Vizcaíno Mendoza

    2015-01-01

    Full Text Available Debido a su movilidad en los ecosistemas y a su toxicidad para las formas superiores de vida,los metales pesados Cd, Pb y Zn son priorizados como unos de los contaminantes inorgánicosmás importantes debido al alto riesgo que representan para el medio ambiente. Con el objeto dedisminuir su concentración se diseñó un sistema para evaluar su remoción empleando biomasade algas rojas, cáscaras de naranja (Citrus sp. y tuna guajira (Opuntia sp.. Se estudió la influenciadel pretratamiento y el empaquetamiento mediante ensayos tipo batch, en los que se emplearonsoluciones de sodio y calcio. Se obtuvo como resultado una mayor capacidad de sorción de lasalgas modificadas con NaOH 0.1 N y de la naranja y la tuna con modificación sucesiva con NaOH yCaCl20.2 M, y una afección poco significativa (≤1% del proceso de sorción al empacar la biomasael placas planas de tul poliéster. La eficiencia de remoción se determinó mediante un reactor deflujo continuo de columna fija con un volumen líquido de 400 mL, 75 g de biomasa y tiemposde retención promedio de 1 y 2 h. Los resultados mostraron una eficiencia similar de las tresbiomasas para remover Cd y Pb, con promedios superiores al 95%, mientras que el Zn se removiócon mejor eficiencia (62% al emplear tuna modificada como sorbente. Finalmente, el materialse calcinó a 700 °C con lo que se obtuvo una ceniza estable frente a soluciones ácidas, lo cualgarantiza la captura de los metales removidos.

  15. Major and c-series gangliosides in lenticular tissues: mammals to molluscs.

    Science.gov (United States)

    Saito, M; Sugiyama, K

    2001-10-01

    Gangliosides of eye lenses were examined in mammals (rat, rabbits, pig, cow), bird (chicken), reptile (terrapin), amphibian (bullfrog), bony fish (red sea bream, bluefin tuna, bonito, Pacific mackerel) and molluscs (common squid, Pacific octopus). Besides the fact that GM3 was the common ganglioside species, the composition of major gangliosides in mammalian eye lenses significantly differed from each other. While gangliotetraose gangliosides were abundant in rat eye lens, they did not constitute major components in porcine and bovine tissues. The c-series ganglioside GT3 was expressed in rat eye lenses but were practically absent in other mammalian tissues. The composition of major gangliosides in eye lenses of lower animals varied from species to species, whereas c-series gangliosides were consistently expressed, showing similar compositional profiles. Our results demonstrate the species-specific compositions of lenticular gangliosides. Evidence was also provided suggesting that eye lenses of common squid (Todarodes pacificus) and Pacific octopus (Octopus vulgaris) express gangliosides including gangliotetraose species and c-series gangliosides.

  16. FISHING GROUND, CACTH COMPOSITION, HOOK RATE AND LENGTH DISTRIBUTION OF BILLFISHES CAUGHT BY TUNA LONG LINE IN INDIAN OCEAN

    Directory of Open Access Journals (Sweden)

    Fathur Rochman

    2013-12-01

    Full Text Available Billfishes area by cacth of tuna long line vessels in Indian Ocean. Billfish are consist of swordfish Xiphias gladius, black marlin Makaira indica, indo facific blue marlin Makaira mazara, stripe marlin Tetrapturus audax, indo facific sailfish Istiophorus platypterus and shortbill spearfish Tetrapturus angustirostris. Besides that, billfishes also have important economic value compared with tuna as an exsported species such as swordfish and marlin. To optimize the catch of billfishes in Indian Ocean, data and information of potential fishing ground, size and catch composition of this species are needed. The billfishes cacth composition collected in 2011 were dominated by 45% swordfish, 20% black marlin, 19% blue marlin,9% short bill spearfish, 6% sailfish and 1%stripe marlin. The billfishes size range which were caught between 60 - 280 cm LJFL (Lower Jaw Fork Length. The sword fish average length was 150 cm, blue marlin 197 cm, black Marlin 189 cm, sailfish 150cm ,short bill spearfish 144 cm and stripe marlin159 cm. From this observation, it was found that most of billfishes caught were in mature.

  17. Colagenosis con afectación dermatológica en edades pediátricas en Las Tunas, 2010 - 2012

    Directory of Open Access Journals (Sweden)

    Katiuska Tamayo Mariño

    2014-08-01

    Full Text Available El estudio de las enfermedades del colágeno en edades pediátricas es relativamente joven y no se cuenta en Las Tunas con archivos que permitan evaluar su comportamiento, por ello se realizó un estudio descriptivo, transversal y prospectivo en el período comprendido entre los años 2010 al 2012, para caracterizar a los pacientes ingresados con estas enfermedades en el hospital pediátrico Mártires de Las Tunas. Inicialmente se determinaron las conectivopatias diagnosticadas con más frecuencia y luego se estudiaron las variables: sexo, edad, color de la piel, procedencia geográfica y antecedentes patológicos familiares de colagenosis, Los resultados fueron expuestos en tablas y expresados en porcientos. Predominaron la artritis idiopática juvenil, seguido de la fiebre reumática y la morfea. El sexo más frecuente fue el femenino, el grupo de edad más afectado fueron los adolescentes mayores de 13 años, el color de la piel que prevaleció fue el blanco y predominaron los pacientes sin antecedentes patológicos familiares de colagenosis

  18. Genetic stock structure of frigate tuna (Auxis thazard) along Indian coast based on PCR-RFLP analyses of mtDNA D-Loop region

    Digital Repository Service at National Institute of Oceanography (India)

    GirishKumar; Kunal, S.P.; Menezes, M.R.

    : 547-572. Pillai, N.G.K. and Mallia, J.V. 2007. Bibliography on Tunas. CMFRI Special Publication No. 92: 325 pp Pillai, P.P. and Gopakumar, G. 2003. In: M. Mohan Joseph, A.A. Jayaprakash, (Eds.), Status of exploited marine fishery resources...

  19. Fish and robot dancing together: bluefin killifish females respond differently to the courtship of a robot with varying color morphs.

    Science.gov (United States)

    Phamduy, P; Polverino, G; Fuller, R C; Porfiri, M

    2014-09-01

    The experimental integration of bioinspired robots in groups of social animals has become a valuable tool to understand the basis of social behavior and uncover the fundamental determinants of animal communication. In this study, we measured the preference of fertile female bluefin killifish (Lucania goodei) for robotic replicas whose aspect ratio, body size, motion pattern, and color morph were inspired by adult male killifish. The motion of the fish replica was controlled via a robotic platform, which simulated the typical courtship behavior observed in killifish males. The positional preferences of females were measured for three different color morphs (red, yellow, and blue). While variation in preference was high among females, females tend to spend more time in the vicinity of the yellow painted robot replicas. This preference may have emerged because the yellow robot replicas were very bright, particularly in the longer wavelengths (550–700 nm) compared to the red and blue replicas. These findings are in agreement with previous observations in mosquitofish and zebrafish on fish preference for artificially enhanced yellow pigmentation.

  20. Fish and robot dancing together: bluefin killifish females respond differently to the courtship of a robot with varying color morphs

    International Nuclear Information System (INIS)

    Phamduy, P; Polverino, G; Porfiri, M; Fuller, R C

    2014-01-01

    The experimental integration of bioinspired robots in groups of social animals has become a valuable tool to understand the basis of social behavior and uncover the fundamental determinants of animal communication. In this study, we measured the preference of fertile female bluefin killifish (Lucania goodei) for robotic replicas whose aspect ratio, body size, motion pattern, and color morph were inspired by adult male killifish. The motion of the fish replica was controlled via a robotic platform, which simulated the typical courtship behavior observed in killifish males. The positional preferences of females were measured for three different color morphs (red, yellow, and blue). While variation in preference was high among females, females tend to spend more time in the vicinity of the yellow painted robot replicas. This preference may have emerged because the yellow robot replicas were very bright, particularly in the longer wavelengths (550–700 nm) compared to the red and blue replicas. These findings are in agreement with previous observations in mosquitofish and zebrafish on fish preference for artificially enhanced yellow pigmentation. (paper)

  1. Evaluation of Antioxidant Activity of Extracts of Marine Algae Halimeda tuna Collected from the Chabahar Bay

    Directory of Open Access Journals (Sweden)

    Ali Taheri

    2017-07-01

    Full Text Available Background and Objectives: Seaweeds are one of the richest sources of natural antioxidants. Antioxidants are main factors of free radical scavenging, which prevent from chronic diseases and food deterioration. These compounds can also be extracted from seaweeds. In this study, the antioxidant activity of the extracts from marine algae Halimeda tuna collected from the coast of Chabahar, was evaluated. Methods: This is an in vitro study. The antioxidant activity of methanol, chloroform, ethyl acetate, and n-hexanic extracts of the algae, were evaluated using three methods of DPPH, ferrous ion chelating activity, and reduction power methods. Data were analyzed by one-way ANOVA and Tukey test at the probability level of 95%. Results: In this study, the highest antioxidant capacity according to DPPH, was related to the chloroform extract (72.85% inhibition at the concentration of 1mg/ml. In the ferrous ion chelating activity, the highest percentage of chelating was allocated to the methanol extract (81.46%. Based on the data from the reduction power test, the highest reduction activity was related to the methanol extract with absorption of 0.553 (concentration, 1mg/ml. Conclusion: Based on the results of this research, the extracts of Halimeda tuna have the potential for application in medicine and pharmaceutical industry and must be confirmed by preclinical and clinical studies.

  2. Global pollution monitoring of polychlorinated dibenzo-p-dioxins (PCDDs), furans (PCDFs) and coplanar polychlorinated biphenyls (coplanar PCBs) using skipjack tuna as bioindicator

    Energy Technology Data Exchange (ETDEWEB)

    Ueno, Daisuke [Center for Marine Environmental Studies (CMES), Ehime University, Bunkyo-cho 2-5, Matsuyama 790-8577 (Japan); Watanabe, Mafumi [Center for Marine Environmental Studies (CMES), Ehime University, Bunkyo-cho 2-5, Matsuyama 790-8577 (Japan); Subramanian, Annamalai [Center for Marine Environmental Studies (CMES), Ehime University, Bunkyo-cho 2-5, Matsuyama 790-8577 (Japan); Tanaka, Hiroyuki [National Research Institute of Fisheries and Environment of Inland Sea (Japan); Fillmann, Gilberto [Fundacao Universidade Federal do Rio Grande (Brazil); Lam, Paul K.S. [Department of Biology and Chemistry, City University of Hong Kong, Hong Kong (China); Zheng, Gene J. [Department of Biology and Chemistry, City University of Hong Kong, Hong Kong (China); Muchtar, Muswerry [Research and Development Center for Oceanology, Indonesian Institute of Sciences (Indonesia); Razak, Hamidah [Research and Development Center for Oceanology, Indonesian Institute of Sciences (Indonesia); Prudente, Maricar [Science Education Department, De La Salle University (Philippines); Chung, Kyu-Hyuck [College of Pharmacy, Sungkyunkwan University (Korea, Republic of); Tanabe, Shinsuke [Center for Marine Environmental Studies (CMES), Ehime University, Bunkyo-cho 2-5, Matsuyama 790-8577 (Japan)]. E-mail: shinsuke@agr.ehime-u.ac.jp

    2005-07-15

    In order to elucidate the global distribution of dioxins and related compounds, such as PCDDs, PCDFs and coplanar PCBs, levels of these compounds were determined in the muscle of skipjack tuna (Katsuwonus pelamis) collected from the offshore waters and open seas near Japan, Taiwan, Philippines, Indonesia, Seychelles and Brazil, and the Japan Sea, the East China Sea, the South China Sea, the Indian Ocean and the North Pacific Ocean. PCDDs, PCDFs and coplanar PCBs were detected in almost all the specimens collected from all the locations surveyed, indicating widespread contamination by these compounds in the marine environment. Higher concentrations of dioxins and coplanar PCBs were detected in the samples from temperate Asian regions, plausibly due to larger usage and anthropogenic generation in highly industrialized countries around the East China Sea and the South China Sea, such as Japan, Korea, Taiwan, Hong Kong and coastal China. - Global pollution monitoring of PCDD/Fs and coplanar PCBs in offshore water and open sea were conducted using skipjack tuna as bioindicator.

  3. Global pollution monitoring of polychlorinated dibenzo-p-dioxins (PCDDs), furans (PCDFs) and coplanar polychlorinated biphenyls (coplanar PCBs) using skipjack tuna as bioindicator

    International Nuclear Information System (INIS)

    Ueno, Daisuke; Watanabe, Mafumi; Subramanian, Annamalai; Tanaka, Hiroyuki; Fillmann, Gilberto; Lam, Paul K.S.; Zheng, Gene J.; Muchtar, Muswerry; Razak, Hamidah; Prudente, Maricar; Chung, Kyu-Hyuck; Tanabe, Shinsuke

    2005-01-01

    In order to elucidate the global distribution of dioxins and related compounds, such as PCDDs, PCDFs and coplanar PCBs, levels of these compounds were determined in the muscle of skipjack tuna (Katsuwonus pelamis) collected from the offshore waters and open seas near Japan, Taiwan, Philippines, Indonesia, Seychelles and Brazil, and the Japan Sea, the East China Sea, the South China Sea, the Indian Ocean and the North Pacific Ocean. PCDDs, PCDFs and coplanar PCBs were detected in almost all the specimens collected from all the locations surveyed, indicating widespread contamination by these compounds in the marine environment. Higher concentrations of dioxins and coplanar PCBs were detected in the samples from temperate Asian regions, plausibly due to larger usage and anthropogenic generation in highly industrialized countries around the East China Sea and the South China Sea, such as Japan, Korea, Taiwan, Hong Kong and coastal China. - Global pollution monitoring of PCDD/Fs and coplanar PCBs in offshore water and open sea were conducted using skipjack tuna as bioindicator

  4. RAD-seq derived genome-wide nuclear markers resolve the phylogeny of tunas

    KAUST Repository

    Díaz-Arce, Natalia

    2016-06-07

    Although species from the genus Thunnus include some of the most commercially important and most severely overexploited fishes, the phylogeny of this genus is still unresolved, hampering evolutionary and traceability studies that could help improve conservation and management strategies for these species. Previous attempts based on mitochondrial and nuclear markers were unsuccessful in inferring a congruent and reliable phylogeny, probably due to mitochondrial introgression events and lack of enough phylogenetically informative markers. Here we infer the first genome-wide nuclear marker-based phylogeny of tunas using restriction site associated DNA sequencing (RAD-seq) data. Our results, derived from phylogenomic inferences obtained from 128 nucleotide matrices constructed using alternative data assembly procedures, support a single Thunnus evolutionary history that challenges previous assumptions based on morphological and molecular data.

  5. Arte, cultura y lucha contra el cáncer en Las Tunas

    Directory of Open Access Journals (Sweden)

    Juan Ernesto Pérez Reyes

    2014-08-01

    Full Text Available Los avances científicos de hoy están permitiendo que el cáncer no se convierta en una sentencia inexorable de muerte. La cronificación del tratamiento plantea retos a los sistemas sanitarios, en su compromiso por ofrecer al enfermo el apoyo para enfrentar su nueva situación y devolverlo a la vida normal. Las complicaciones producto de los tratamientos, los efectos físicos secundarios, la modificación de las rutinas y el sentir que se vive bajo una amenaza, desestabilizan el balance emocional de muchos enfermos. El arte puede captar los más personales aspectos en la experiencia del cáncer. La creación artística puede unir a pacientes, familiares, amigos, al equipo sanitario y a la comunidad en su conjunto, aportando nuevos caminos para ayudar al paciente. La labor artística puede proveer de otros modos de expresión que no se encuentran en las formas tradicionales de tratamiento, permitiendo explorar temas intrínsecos del enfermo de forma creativa y personal. El arte puede comunicar con los aspectos más silenciados de la enfermedad, ayudando a las personas con escasas posibilidades para confesar sus experiencias. Bajo esta premisa el recientemente fundado capítulo provincial de la Sociedad cubana de oncología, radioterapia y medicina nuclear ha efectuado en Las Tunas varias actividades a partir del día tres de febrero del actual año, comenzando con la inauguración de la Jornada provincial de lucha contra el cáncer. La estrategia divulgativa contó con la colaboración del Grupo provincial para el control del cáncer, el Centro provincial del cine y el proyecto FILOARTMED de la Universidad médica de Las Tunas, quienes se han interesado en elevar la producción científica de los profesionales de la salud, que luchan por controlar el cáncer en el territorio. En la sala cinematográfica Titón del Teatro Tunas, se dieron cita los miembros del capítulo provincial de la Sociedad cubana de oncología, radioterapia y medicina

  6. Using stable isotopes of albacore tuna and predictive models to characterize bioregions and examine ecological change in the SW Pacific Ocean

    Science.gov (United States)

    Pethybridge, Heidi R.; Young, Jock W.; Kuhnert, Petra M.; Farley, Jessica H.

    2015-05-01

    Broad-scale food web inferences of 534 albacore tuna, Thunnus alalunga, in the south-west Pacific Ocean in 2009 and 2010 were made using bulk nitrogen (δ15N) and carbon (δ13C) stable isotopes. Condition was also examined for the same fish using C:N ratios. A Generalized Additive Modeling (GAM) approach was used to analyze spatio-temporal, biological and environmental drivers that impact the distribution of tuna isotopes and to create oceanographic maps. Based on model formulations, five bioregions with distinct isotopic signatures were identified and were related to known biological, nutrient cycling and oceanographic (temperature, primary productivity and eddy) features associated with the East Australian Current. δ15N values showed a large-scale, uniform latitudinal gradient decreasing from the south to north, in a region encompassing oligotrophic waters in the Coral Sea. In contrast, δ13C values were lower in the nutrient rich Tasman Sea waters and offshore East Australia. C:N ratios suggested that albacore occupying southern and offshore waters were in better condition. Ontogenetic trends in all three biochemical parameters were identified and related to differences in size distribution. Regional-specific temporal variations were detected including similar monthly changes for both isotopes and significantly less enriched δ13C (by 1.9‰) than in previous work undertaken in 2006, potentially signifying a substantial shift in the carbon cycle that supports food webs off central east Australia. Our results showed that isotopic measurements in tuna and the GAM framework provide powerful tools to assess ecosystem functioning and change by linking sources of nutrients and organic matter to local food web assembly. Such knowledge is vital to support an ecosystem based approach to fisheries management including biogeochemical whole-of-ecosystem models and monitoring programs at regional and landscape-scales.

  7. Chemical composition of protein concentrate prepared from Yellowfin tuna Thunnus albacares roe by cook-dried process

    Directory of Open Access Journals (Sweden)

    Hyun Ji Lee

    2016-05-01

    Full Text Available Abstract Roe is the term used to describe fish eggs (oocytes gathered in skeins and is one of the most valuable food products from fishery sources. Thus, means of processing are required to convert the underutilized yellowfin tuna roes (YTR into more marketable and acceptable forms as protein concentrate. Roe protein concentrates (RPCs were prepared by cooking condition (boil-dried concentrate, BDC and steam-dried concentrate, SDC, respectively and un-cooking condition (freeze-dried concentrate, FDC from yellowfin tuna roe. The yield of RPCs was in the range from 22.2 to 25.3 g/100 g of roe. RPCs contained protein (72.3–77.3 %, moisture (4.3–5.6 %, lipid (10.6–11.3 % and ash (4.3–5.7 % as the major constituents. The prominent amino acids of RPCs were aspartic acid, 8.7–9.2, glutamic acid, 13.1–13.2, and leucine, 8.5–8.6 g/100 g of protein. Major differences were not observed in each of the amino acid. K, S, Na, and P as minerals were the major elements in RPCs. No difference noted in sodium dodecyl sulfate polyacrylamide gel electrophoresis protein band (15–100 K possibly representing partial hydrolysis of myosin. Therefore, RPCs from YTR could be use potential protein ingredient for human food and animal feeds.

  8. Reconstruction of spatiotemporal capture data by means of orthogonal functions: the case of skipjack tuna (Katsuwonus pelamis in the central-east Atlantic

    Directory of Open Access Journals (Sweden)

    Unai Ganzedo

    2013-10-01

    Full Text Available The information provided by the International Commission for the Conservation of Atlantic Tunas (ICCAT on captures of skipjack tuna (Katsuwonus pelamis in the central-east Atlantic has a number of limitations, such as gaps in the statistics for certain fleets and the level of spatiotemporal detail at which catches are reported. As a result, the quality of these data and their effectiveness for providing management advice is limited. In order to reconstruct missing spatiotemporal data of catches, the present study uses Data INterpolating Empirical Orthogonal Functions (DINEOF, a technique for missing data reconstruction, applied here for the first time to fisheries data. DINEOF is based on an Empirical Orthogonal Functions decomposition performed with a Lanczos method. DINEOF was tested with different amounts of missing data, intentionally removing values from 3.4% to 95.2% of data loss, and then compared with the same data set with no missing data. These validation analyses show that DINEOF is a reliable methodological approach of data reconstruction for the purposes of fishery management advice, even when the amount of missing data is very high.

  9. Benitez Bustamante, Carmen MatildeEstudio de factibilidad para la creación de una empresa dedicada a la producción y comercialización de mermelada y jugo de tuna para el mercado exterior.

    OpenAIRE

    Benitez Bustamante, Carmen Matilde

    2010-01-01

    El presente proyecto consiste en la realización de un estudio de prefactibilidad para verificar la viabilidad de la creación de una empresa dedicada a la producción y comercialización de mermelada y jugo de tuna para el mercado exterior. Se desarrollaron los estudios de mercado, técnico, organizacional y financiero. La empresa llevará el nombre de ECUATUNA Cía. Ltda., y producirá mermelada y jugo de tuna; cuyos nombres comunes serán: cactus jam y juice jam, respectivamente. Y el nombre com...

  10. Génesis de la medicina familiar en Las Tunas

    Directory of Open Access Journals (Sweden)

    Maritza Rodríguez Peña

    2014-08-01

    Full Text Available Se realizó una investigación desde los presupuestos de la historia social integral, con el objetivo de analizar momentos importantes de la historia de la medicina familiar en la localidad de Las Tunas. Para la investigación se consultaron diversas fuentes documentales, orales, iconográficas, patrimoniales y bibliográficas, entre ellas la obra de los historiadores de la ciudad y del Ministerio de Salud Pública, así como resultados científicos de proyectos de investigación. Los métodos empleados partieron de la observación, el análisis histórico-lógico, la síntesis, la inducción y la deducción de la información, que permitieron la sistematización y determinación de los momentos más importantes de este proceso desde su origen en la comunidad primitiva, transitando por diferentes etapas hasta 1984, con la puesta en práctica del Programa del Médico y la Enfermera de la Familia, para el fortalecimiento de la atención primaria de salud, con marcado acento preventivo

  11. Relationships between tuna catch and variable frequency oceanographic conditions

    Directory of Open Access Journals (Sweden)

    F. I. Ormaza-González

    2016-08-01

    Full Text Available Skipjack (Katsuwunus pelamis, yellow fin (Thunnus albacares and albacore (Thunnus alulunga tunas landed in the Eastern Pacific Ocean (EPO countries and Ecuador were correlated to the Indexes Oceanic El Niño (ONI and Multivariate Enso Index (MEI. The temporal series 1983–2012, and 1977–1999 (warm Pacific Decadal Oscillation, PDO, and 2000–2012 (cold PDO were analyzed. Linear correlation showed that at least 11 % of the total landings were associated with the MEI, with a slightly negative gradient from cold to warm conditions. When non-linear regression (n  =  6, the R2 was higher up to 0.304 (MEI, r =  0.551. The correlation shows high spread from −0.5 to +0.5 for both MEI/ONI; the highest landings occurred at 0.34–0.45; both indexes suggested that at extreme values < −1.0 and > 1.1 total landings tend to decrease. Landings were associated up to 21.9 % (MEI in 2000–2012, 1983–1999 rendered lower R2 (< 0.09; i.e., during cold PDO periods there was a higher association between landings and oceanographic conditions. For the non-linear regression (n  =  6 a R2 of 0.374 (MEI and 0.408 (ONI were registered, for the 2000–2012, a higher R2 was observed in 1983–1999, 0.443 and 0.711 for MEI and ONI respectively, suggesting that is better to analyze split series (1983–1999, 2000–2012 than as a whole (1983–2012, due to noise produced by the transition from hot to cold PDOs. The highest landings were in the range −0.2 to 0.5 for MEI/ONI. The linear regression of skipjack landings in Ecuador gave an R2 of 0.140 (MEI and 0.066 (ONI and the non-linear were 0.440 and 0.183 respectively. Total landings in the EPO associated to oceanographic events of high and low frequencies could be used somehow as predictors of the high El Niño o La Niña. There is a clear evidence that tuna fish biomass are at higher levels when the PDO is on cold phase (2000–2030 and vice versa on warm phase (1980–1999. The

  12. Assessment of radioactive elements in canned tuna marketed in Saudi Arabia after Fukushima accident

    International Nuclear Information System (INIS)

    Alkhomashi, N.; Alyousif, A.A.S.; Walied Alotibi; Alkhorayef, M.A.

    2016-01-01

    In the current study, 32 brands of canned tuna that were purchased in supermarkets in Riyadh, Saudi Arabia were analysed to quantify the activity levels of 137 Cs, 134 Cs and 40 K. These samples were processed in Japan, the Philippines, Thailand, Europe and the Middle East in 2011 and 2012. The samples were analysed using high-resolution gamma-ray spectroscopy. The highest activity concentrations of all three radionuclides were obtained in the samples that were processed in Japan in 2011 a few months after the Fukushima Daiichi accident. However, the activity concentrations of radiocaesium in all the samples in this study were far below the limit for food and beverages of 100 Bq/kg, which is the standard limit in the Japan. (author)

  13. Hydraulic control of tuna fins: A role for the lymphatic system in vertebrate locomotion.

    Science.gov (United States)

    Pavlov, Vadim; Rosental, Benyamin; Hansen, Nathaniel F; Beers, Jody M; Parish, George; Rowbotham, Ian; Block, Barbara A

    2017-07-21

    The lymphatic system in teleost fish has genetic and developmental origins similar to those of the mammalian lymphatic system, which is involved in immune response and fluid homeostasis. Here, we show that the lymphatic system of tunas functions in swimming hydrodynamics. Specifically, a musculo-vascular complex, consisting of fin muscles, bones, and lymphatic vessels, is involved in the hydraulic control of median fins. This specialization of the lymphatic system is associated with fish in the family Scombridae and may have evolved in response to the demand for swimming and maneuvering control in these high-performance species. Copyright © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works.

  14. 76 FR 74003 - Atlantic Highly Migratory Species; Adjustments to the Atlantic Bluefin Tuna General and Harpoon...

    Science.gov (United States)

    2011-11-30

    ... price for BFT exported to Japan is dependent on a number of factors, including: Quality, size, and.... Lowering of the minimum size could be achieved in a resource neutral fashion with a modest transfer...

  15. Form and function of the bulbus arteriosus in yellowfin tuna (Thunnus albacares), bigeye tuna (Thunnus obesus) and blue marlin (Makaira nigricans): static properties.

    Science.gov (United States)

    Braun, Marvin H; Brill, Richard W; Gosline, John M; Jones, David R

    2003-10-01

    The juxtaposition of heart and gills in teleost fish means that the Windkessel function characteristic of the whole mammalian arterial tree has to be subserved by the extremely short ventral aorta and bulbus arteriosus. Over the functional pressure range, arteries from blue marlin (Makaira nigricans) and yellowfin tuna (Thunnus albacares) have J-shaped pressure-volume (P-V) loops, while bulbi from the same species have r-shaped P-V loops, with a steep initial rise followed by a compliant plateau phase. The steep initial rise in pressure is due to the geometry of the lumen. The interactions between radius, pressure and tension require a large initial pressure to open the bulbar lumen for flow. The plateau is due to the unique organization of the bulbar wall. The large elastin:collagen ratio, limited amount of collagen arranged circumferentially, lack of elastin lamellae and low hydrophobicity of the elastin itself all combine to lower stiffness, increase extensibility and allow efficient recoil. Even though the modulus of bulbus material is much lower than that of an artery, at large volumes the overall stiffness of the bulbus increases rapidly. The morphological features that give rise to the special inflation characteristics of the bulbus help to extend flow and maintain pressure during diastole.

  16. Petrological and geochemical studies of alkaline rocks from continental Brazil. The tunas massif, state of Parana

    International Nuclear Information System (INIS)

    Gomes, C.B.; Barbieri, M.

    1987-01-01

    The Tunas massif, outcropping 80 km from the city of Curitiba, Parana State, southern Brazil, covers about 22 km 2 . It intruded into Precambrian metaigneous and metasedimentary units about 80 Ma ago (K/Ar and Rb/Sr data); five subcircular volcanic structures are recognized. Syenites and alkali syenites (plus some pulaskites) are the main rock-types, with subordinate alkali gabbros, syenogabbros, essexites and syenodiorites; small late syenitic dikes are also found. Magmatic breccias containing clasts of all rock-types are widespread. Main minerals are feldspars (both alkali feldspars and plagioclases, varying from bytownite to more sodic members), Ca-pyroxenes (Ti-salites grading towards ferrosalites and aegirine-augites), amphiboles (mainly pargasites, although kaersutites and katophorites are also present), Fe-biotites (sometimes enriched in Ti), olivines (hortonolites to ferrohortonolites), quartz and feldspathoids (both fresh and altered nephelines and sodalites); main accessories are Ti-magnetites (with exsolved ilmenite) and apatite. In the AFM diagram, whole rock chemistry depicts a typical alkaline trend. Binary variation diagrams (D.I. vs. several elements) show positive correlation for Si, Na and K, and negative slopes for Mg and Ca. The variation in the amounts of Ni, Cr and V with differentiation can be explained by withdrawal of olivine, Ca-pyroxenes and magnetite, and that of Sr and Ba by the fractionation of feldspars. The rocks are also relatively enriched in REE, a trend which is more pronounced for the light REE. Mass balance calculations show that the overall differentiation trend of the Tunas rocks can be explained by crystal fractionation, although several complexities arise and point to more complex genetic patterns. Isotopic Rb/Sr ratios are consistent with a mantle origin for the parental magma; dike rocks, however, with 87 Sr 86 Sr i = 0.70777 - 0.70806, were probably contaminated by crustal material. (author) [pt

  17. Evaluation of three harvest control rules for Bigeye Tuna ( Thunnus obesus) fisheries in the Indian Ocean

    Science.gov (United States)

    Tong, Yuhe; Chen, Xinjun; Kolody, Dale

    2014-10-01

    The stock of Bigeye tuna ( Thunnus obesus) in the Indian Ocean supports an important international fishery and is considered to be fully exploited. The responsible management agency, the Indian Ocean Tuna Commission (IOTC), does not have an explicit management decision-making framework in place to prevent over-fishing. In this study, we evaluated three harvest control rules, i) constant fishing mortality (CF), from 0.2 to 0.6, ii) constant catch (CC), from 60000 to 140000 t, and iii) constant escapement (CE), from 0.3 to 0.7. The population dynamics simulated by the operating model was based on the most recent stock assessment using Stock Synthesis version III (SS3). Three simulation scenarios (low, medium and high productivity) were designed to cover possible uncertainty in the stock assessment and biological parameters. Performances of three harvest control rules were compared on the basis of three management objectives (over 3, 10 and 25 years): i) the probability of maintaining spawning stock biomass above a level that can sustain maximum sustainable yield (MSY) on average, ii) the probability of achieving average catches between 0.8 MSY and 1.0 MSY, and iii) inter-annual variability in catches. The constant escapement strategy ( CE=0.5), constant fishing mortality strategy ( F=0.4) and constant catch ( CC=80000) were the most rational among the respective management scenarios. It is concluded that the short-term annual catch is suggested at 80000 t, and the potential total allowable catch for a stable yield could be set at 120000 t once the stock had recovered successfully. All the strategies considered in this study to achieve a `tolerable' balance between resource conservation and utilization have been based around the management objectives of the IOTC.

  18. Identification of enolases and aldolases as important fish allergens in cod, salmon and tuna: component resolved diagnosis using parvalbumin and the new allergens.

    Science.gov (United States)

    Kuehn, A; Hilger, C; Lehners-Weber, C; Codreanu-Morel, F; Morisset, M; Metz-Favre, C; Pauli, G; de Blay, F; Revets, D; Muller, C P; Vogel, L; Vieths, S; Hentges, F

    2013-07-01

    The majority of fish-allergic patients are sensitized to parvalbumin, known to be the cause of important IgE cross-reactivity among fish species. Little is known about the importance of fish allergens other than parvalbumin. The aim of this study was to characterize hitherto undefined fish allergens in three commonly consumed fish species, cod, salmon and tuna, and to evaluate their importance for in vitro IgE-diagnosis in addition to parvalbumin and fish gelatin. Sixty-two patients were diagnosed by clinical history, skin prick tests and specific IgE to fish extracts. Two new fish allergens from cod, salmon and tuna were identified by microsequencing. These proteins were characterized by immunoblot, ELISA and mediator release assay. Purified parvalbumin, enolase, aldolase and fish gelatin were used for quantification of specific IgE in ELISA. Parvalbumin and two other allergens of 50 and 40 kDa were detected in IgE-immunoblots of cod, salmon and tuna extracts by most patient sera. The 50 and 40 kDa proteins were identified as beta-enolase and fructose-bisphosphate aldolase A respectively. Both purified enzymes showed allergenic activity in the mediator release assay. Indeed, 72.6% of the patients were sensitized to parvalbumin, 20% of these had specific IgE to salmon parvalbumin only. IgE to enolases were found in 62.9% (0.5-95.0 kUA /L), to aldolases in 50.0% (0.4-26.0 kUA /L) and to fish gelatin in 19.3% (0.4-20.0 kUA /L) of the patients. Inter-species cross-reactivity, even though limited, was found for enolases and aldolases by IgE-inhibition ELISA. Fish enolase and aldolase have been identified as important new fish allergens. In fish allergy diagnosis, IgE to enolase and aldolase are especially relevant when IgE to parvalbumin are absent. © 2013 John Wiley & Sons Ltd.

  19. A large outbreak of scombroid fish poisoning associated with eating yellowfin tuna (Thunnus albacares) at a military mass catering in Dakar, Senegal.

    Science.gov (United States)

    Demoncheaux, J-P; Michel, R; Mazenot, C; Duflos, G; Iacini, C; de Laval, F; Delaval, F; Saware, E M; Renard, J-C

    2012-06-01

    On 26 November 2010, an outbreak of scombroid fish poisoning occurred in the French Armed Forces in Dakar, Senegal. This chemical intoxication, due to high histamine concentration in fish, is often mistaken for an allergic reaction. A case-control study was undertaken including the 71 cases and 78 randomly selected controls among lunch attendees. The usual symptoms for scombroid fish poisoning were observed in cases, i.e. flushing (85.9%), headache (83.1%), rapid/weak pulse (59.1%) and diarrhoea (47.9%). Symptoms occurred from within a few minutes to up to 3 h following the meal. Most patients quickly recovered with antihistamine and/or symptomatic treatment. Tuna was the only food item positively associated with illness (odds ratio 36.3, 95% confidence interval 6.3-210.0), with the risk of illness increasing with the quantity of fish consumed. No bacterial contamination was found in leftover food, but histamine concentration in tuna was found to be 4900 mg/kg, almost 50-fold higher than the concentration allowed by European regulations. This report is unique because of the large size of the case series - to our knowledge, the largest event of scombroid fish poisoning ever reported - and the chemical and bacteriological analyses results obtained on leftover food.

  20. Selected-ion storage GC-MS analysis of polycyclic aromatic hydrocarbons in palm dates and tuna fish

    Energy Technology Data Exchange (ETDEWEB)

    Al-Omair, A.; Helaleh, M.I.H. [Kuwait Inst. for Scientific Research (KISR), Central Analytical Lab. (CAL), Safat (Kuwait)

    2004-06-01

    A rapid analytical method based on Soxhlet extraction has been developed for determination of polycyclic aromatic hydrocarbons (PAH) in palm dates and tuna fish. The method is based on selected ion-storage gas chromatography-mass spectrometry. In the work discussed we were interested in the analysis of 16 polycyclic aromatic hydrocarbons (PAH) regarded by the EPA as priority pollutants. Soxhlet extraction of real, fortified, and blank samples, with hexane as solvent, was used to extract the analytes of interest. An excellent detection limit and good relative standard deviations (RSD) were obtained and analysis time was short. The linearity and sensitivity of the method for measurement of these analytes at trace levels are discussed. (orig.)

  1. PCR detection and identification of histamine-forming bacteria in filleted tuna fish samples.

    Science.gov (United States)

    Ferrario, Chiara; Pegollo, Chiara; Ricci, Giovanni; Borgo, Francesca; Fortina, M Grazia

    2012-02-01

    Total of 14 filleted yellowfin tuna fish (Thunnus albacares) sold in wholesale fish market and supermarkets in Milan, Italy, were purchased and tested to determine microbial count, histamine level, histamine-forming bacteria, and their ability to produce histamine in culture broth. Although histamine level was less than 10 ppm, many samples showed high total viable bacterial and enterobacterial counts that reached dangerous levels after temperature abuse for short periods of time. A PCR assay targeting a 709-bp fragment of the histidine decarboxylase gene (hdc) revealed that 30.5% of the 141 enteric bacteria isolated from samples were positive and potentially able to produce histamine. The hdc positive strains were mainly isolated from fish bought at wholesale fish market, where we observed several possible risk factors, such as handling in poor and non-refrigerated conditions during fillet preparation. These positive strains were identified as Citrobacter koseri/Enterobacter spp. and Morganella morganii, by 16S/23S rRNA internal transcribed spacer amplification and 16S rRNA sequence analysis. The strains showed a variable ability of histamine production, with Morganella morganii being the most active histamine-producing species. A direct DNA extraction from fish and a PCR targeting the hdc gene showed a high degree of concordance with the results obtained through microbiological and chemical analyses, and could aid in the prompt detection of potentially contaminated fish products, before histamine accumulates. The use of methods for the early and rapid detection of bacteria producing biogenic amines is important for preventing accumulation of these toxic substances in food products. In this study, we used a molecular approach for the detection of histamine-forming bacteria in fish. PCR-based methods require expensive equipment and a high degree of training for the user, but are fast (marketing and can be used in the investigation of risk reduction strategies.

  2. SINTESIS FOSFOLIPID MENGANDUNG ASAM LEMAK w-3 DARI FOSFOLIPID KEDELAI DAN MINYAK KAYA ASAM LEMAK w-3 DARI HASIL SAMPING PENGALENGAN TUNA

    Directory of Open Access Journals (Sweden)

    Teti Estiasih

    2013-03-01

    Full Text Available Synthesis of Phospholipid Containing w-3 Fatty Acids from Soy Phospholipidsand Fish Oil Enriched with w-3 Fatty Acids from Tuna Canning Processing Teti Estiasih, Moch. Nur, Jaya Mahar Maligan, Satrio Maulana ABSTRAK Keunggulan fosfolipid dapat ditingkatkan dengan menggabungkan asam lemak w-3, terutama EPA (eicosapentaenoicacid, C20:5w-3 dan DHA (docosahexaenoic acid, C22:6w-3, pada struktur fosfolipid sehingga diperoleh fosfolipidterstruktur. Strukturisasi fosfolipid kedelai komersial dilakukan dengan cara mengganti asam lemak dari fosfolipidkedelai dengan asam lemak w-3 dari minyak kaya asam lemak w-3 dari hasil samping pengalengan tuna. Sintesisfosfolipid terstruktur dilakukan secara asidolisis enzimatis dengan menggunakan lipase dari R. miehei. Faktor yangdikaji pada proses sintesis ini adalah konsentrasi enzim dan lama sintesis. Tingkat inkorporasi EPA dan DHA padastruktur fosfolipid dipengaruhi oleh konsentrasi enzim. Pada konsentrasi enzim yang rendah, peningkatan lama reaksisetelah tingkat inkoporasi optimum tercapai cenderung menyebabkan penurunan tingkat inkorporasi EPA+DHA. Padakonsentrasi enzim yang tinggi, lama reaksi tampaknya tidak mempengaruhi tingkat inkorporasi. Tingkat inkorporasiDHA lebih tinggi dari EPA sehingga fosfolipid terstruktur yang dihasilkan sangat sesuai digunakan untuk produk panganyang memerlukan kadar DHA tinggi. Ada preferensi inkorporasi EPA+DHA pada fosfatidiletanolamin dibandingkanjenis fosfolipid yang lain.Kata kunci: Fosfolipid terstruktur, asam lemak w-3, EPA, DHA, asidolisis enzimatis ABSTRACT The superiority of soy phospholipids could be obtained by incorporation of w-3 fatty acids into phospholipids structure,especially EPA (eicosapentaenoic acid, C20:5w-3 and DHA docosahexaenoic acid, C22:6w-3. Structurization ofcommercial soy phospholipids was conducted by replacement of natural fatty acids in soy phospholipids by w-3 fattyacids from w-3 fatty acids enriched Þ sh oil from tuna canning processing

  3. Preparation and characterization of protein isolate from Yellowfin tuna Thunnus albacares roe by isoelectric solubilization/precipitation process

    Directory of Open Access Journals (Sweden)

    Hyun Ji Lee

    2016-05-01

    Full Text Available Abstract Isoelectric solubilization/precipitation (ISP processing allows selective, pH-induced water solubility of proteins with concurrent separation of lipids and removal of materials not intended for human consumption such as bone, scales, skin, etc. Recovered proteins retain functional properties and nutritional value. Four roe protein isolates (RPIs from yellowfin tuna roe were prepared under different solubilization and precipitation condition (pH 11/4.5, pH 11/5.5, pH 12/4.5 and pH 12/5.5. RPIs contained 2.3–5.0 % moisture, 79.1–87.8 % protein, 5.6–7.4 % lipid and 3.0–3.8 % ash. Protein content of RPI-1 and RPI-2 precipitated at pH 4.5 and 5.5 after alkaline solubilization at pH 11, was higher than those of RPI-3 and RPI-4 after alkaline solubilization at pH 12 (P < 0.05. Lipid content (5.6–7.4 % of RPIs was lower than that of freeze-dried concentrate (10.6 %. And leucine and lysine of RPIs were the most abundant amino acids (8.8–9.4 and 8.5–8.9 g/100 g protein, respectively. S, Na, P, K as minerals were the major elements in RPIs. SDS-PAGE of RPIs showed bands at 100, 45, 25 and 15 K. Moisture and protein contents of process water as a 2’nd byproduct were 98.9–99.0 and 1.3–1.8 %, respectively. Therefore, yellowfin tuna roe isolate could be a promising source of valuable nutrients for human food and animal feeds.

  4. Evaluación del estado mental de los pacientes centenarios en Las Tunas, diciembre 2007- agosto 2008

    Directory of Open Access Journals (Sweden)

    Lisset del Carmen Romero Portelles

    2015-12-01

    Full Text Available El envejecimiento de la población en Cuba es similar al de muchos países desarrollados, y se encuentra entre los que tienen un índice más elevado dentro del grupo de países en desarrollo. Se realizó un trabajo descriptivo observacional  en la provincia de Las Tunas, en el período diciembre 2007- agosto 2008, con el propósito de caracterizar el estado cognitivo-afectivo de los centenarios. El universo estuvo  constituido por 97 ancianos; una vez validada su edad, la muestra quedó conformada con 95 centenarios. Se aplicaron los instrumentos Mini-Mental State Examination (MMSE y Clinical Dementia Rating Scale (CDR y se estudiaron las siguientes variables: estado cognitivo, estado de ánimo, satisfacción con la vida, nivel de tensión y la percepción de eventos vitales. El dato primario provino de las entrevistas realizadas, y para el análisis estadístico se creó una hoja de cálculo en Excel. Se utilizaron técnicas de distribución de frecuencias; para las variables cuantitativas se empleó la proporción en porcentaje. En la muestra de individuos centenarios que vivían en la provincia de Las Tunas, al momento del estudio, predominaron los que no presentaban deterioro cognitivo ni depresión, tuvieron  satisfacción alta con la vida, nivel bajo de tensión y no se afectaban con los eventos vitales. Las positivas características psicológicas y de resiliencia, unidas a un entorno psicosocial favorable, se relacionan con la larga supervivencia de los individuos estudiados.

  5. Heavy metals in yellowfin tuna (Thunnus albacares) and common dolphinfish (Coryphaena hippurus) landed on the Ecuadorian coast

    Energy Technology Data Exchange (ETDEWEB)

    Araújo, Cristiano V.M., E-mail: cristiano.araujo@icman.csic.es [Central Department of Research (DCI), Ecuadorian Aquatic Ecotoxicology (ECUACTOX) group, Universidad Laica Eloy Alfaro de Manabí - ULEAM, Manta (Ecuador); Centre of Functional Ecology (CFE), Department of Life Sciences, University of Coimbra, Coimbra (Portugal); Cedeño-Macias, Luis A. [Central Department of Research (DCI), Ecuadorian Aquatic Ecotoxicology (ECUACTOX) group, Universidad Laica Eloy Alfaro de Manabí - ULEAM, Manta (Ecuador); Faculty of Marine Sciences, Universidad Laica Eloy Alfaro de Manabí (ULEAM), Manta (Ecuador)

    2016-01-15

    Heavy metals are contaminants of great environmental concern due to their multiple origins (natural and anthropogenic), the ability to accumulate in organs and tissues, and the deleterious effects they can cause in organisms. Studies on the accumulation of metals in seafood, such as fish, have increased in importance due to the risk for human health when consuming fish contaminated by metals. The present work was aimed at verifying the concentrations of cadmium (Cd), mercury (Hg) and lead (Pb) in the muscular tissue and liver of yellowfin tuna (Thunnus albacares) and common dolphinfish (Coryphaena hippurus) from the Eastern Pacific Ocean landed in Manta city, Ecuador. Samples were analyzed by inductively coupled plasma mass spectroscopy (ICP-MS). Around half of the muscle samples of both species presented levels of Cd and Hg above the limits considered safe for human consumption established by the European Union. For Pb, most of the muscle samples were considered acceptable for consumption. Results indicate that both species should be consumed with some caution. Considering the tolerable weekly intake recommended for adults by the World Health Organization, results indicate that Hg is the main metal that limits the consumption of yellowfin tuna and common dolphinfish, with a recommended maximum ingestion, respectively, of 191 and 178 g per week for an adult. - Highlights: • Thunnus albacares and Coryphaena hippurus from Eastern Pacific (Ecuador) were sampled. • Muscle and liver of both species were assessed for Cd, Hg and Pb concentrations. • Levels of Pb were considered acceptable for both species. • High levels of Cd and Hg in both species can be considered unsafe for human health. • For both species the recommended maximum ingestion is around 180 g week{sup −1} for an adult.

  6. 76 FR 2313 - Atlantic Highly Migratory Species; Bluefin Tuna Bycatch Reduction in the Gulf of Mexico Pelagic...

    Science.gov (United States)

    2011-01-13

    ..., 2010, an explosion and subsequent fire damaged the Deepwater Horizon MC252 oil rig, which capsized and... Mediterranean stock. Therefore, management actions taken in the eastern Atlantic and Mediterranean are likely to... have significant effects on the West due to the fact that Eastern plus Mediterranean resource is much...

  7. 76 FR 18653 - Atlantic Highly Migratory Species; Bluefin Tuna Bycatch Reduction in the Gulf of Mexico Pelagic...

    Science.gov (United States)

    2011-04-05

    ..., including BFT. This final action is not expected to change fishing effort or behavior beyond that already... substantial negative social and economic impacts and cannot be implemented in short time frames, these...- economic benefits of normal operation of directed fisheries in the GOM with minimal short-term negative...

  8. Anaerobic digestion of tuna waste for the production of volatile fatty acids.

    Science.gov (United States)

    Bermúdez-Penabad, Noela; Kennes, Christian; Veiga, Maria C

    2017-10-01

    Fish canning industries generate a significant amount of solid waste that can be digested anaerobically into volatile fatty acids (VFA). The aim of this research was to study the effect of various pHs, ranging from 5.0 to 10.0, and percentage of total solids on the anaerobic digestion of tuna waste into VFA, both in batch assays and continuous reactor. The production of VFA was affected by pH and was significantly higher under alkaline conditions. At pH 8.0, the VFA production reached 30,611mgCOD/L. The VFA mainly consisted of acetic, propionic, n-butyric and i-valeric acids. Acetic acid was the main product at all the pHs tested. In terms of total solids (TS) the best results were obtained with 2.5% total solids, reaching 0.73gCOD VFA /gCOD waste . At higher TS concentrations (5 and 8% TS) lower yields were reached probably due to inhibition at high VFA concentration. Copyright © 2017 Elsevier Ltd. All rights reserved.

  9. OPTIMASI KONDISI PEMURNIAN ASAM LEMAK OMEGA-3 DARI MINYAK HASIL SAMPING PENEPUNGAN TUNA (Thunnus sp DENGAN KRISTALISASI UREA [Optimizing Conditions for the Purification of Omega-3 Fatty Acids from By-product of Tuna (Thunnus sp Meal Processing by Urea Crystallization

    Directory of Open Access Journals (Sweden)

    Teti Estiasih1*

    2009-12-01

    Full Text Available Omega-3 fatty acids (-3 are proven to have health beneficial effects. Some effort had been done to obtained oil high in -3 fatty acids. Among the methods developed, urea crystallization was preferred because it is simple, economic, and result in high purity of fatty acids. A source that had not been widely explored for -3 fatty acids production is the by-product of tuna meal processing. This research studied the optimization condition for separation and purification of -3 fatty acids from the by-product of tuna meal processing by urea crystallization. Crystallization reaction conditions of urea inclusion were optimized using the response surface methodology, and the model was developed.Optimization result showed a quadratic polynomial regression equation of Y= 140,52677X1 + 8,38203X2 – 19,85850X12 – 0,12173X22 – 0,74000X1X2 – 240,33546 with X1=urea to fatty acid ratio and X2=crystallization time. Maximum response was obtained at urea to fatty acid ratio of 3,07:1,crystallization time of 25,10 hours, and predicted response was 80,60%. Analysis of variance showed that urea to fatty acid ratio and crystallization time affected response. Under optimal conditions, the product was 3.89 times concentrated and the purity of -3 fatty acids was 81,98%. Verification result revealed that the predicted value from this model was reasonably close to the experimentally observed value. Urea crystallization process changed quality parameters that were oxidation level (peroxide value, anisidin value, and totox value, Fe and Cu content, P content, and water content. The changes were caused by adsorption of primary and secondary oxidation products, part of metals, and phosphoric compound onto unsaponifiable matters or soluble into water.

  10. PERCEPCIÓN DE PRODUCTORES DE TABACO SOBRE INSECTOS PLAGAS Y SU MANEJO EN EL MUNICIPIO JESÚS MENÉNDEZ (LAS TUNAS)

    OpenAIRE

    Rivas, A; Rivas, R; Hinojosa, D; Pérez, J.C; Méndez, A; Martínez, M.A

    2012-01-01

    El tránsito hacia un desarrollo agrario sostenible requiere un acercamiento inicial al estado del conocimiento y a la sensibilización de los actores en relación con los problemas de su entorno local. Con el objetivo de evaluar la percepción fitoproteccionista de productores de tabaco acerca de los insectos plagas en el cultivo y su manejo en el municipio Jesús Menéndez (provincia Las Tunas), se desarrolló el presente estudio. Se utilizó como método la entrevista semi estructurada aplicada a u...

  11. Valorisation of tuna processing waste biomass for recovery of functional and antioxidant peptides using enzymatic hydrolysis and membrane fractionation process.

    Science.gov (United States)

    Saidi, Sami; Ben Amar, Raja

    2016-10-01

    The enzymatic hydrolysis using Prolyve BS coupled to membrane process (Ultrafiltration (UF) and nanofiltration (NF)) is a means of biotransformation of tuna protein waste to Tuna protein hydrolysate (TPH) with higher added values. This method could be an effective solution for the production of bioactive compounds used in various biotechnological applications and minimizing the pollution problems generated by the seafood processing industries. The amino acid composition, functional and antioxidant properties of produced TPH were evaluated. The results show that the glutamic acid, aspartic acid, glycine, alaline, valine and leucine were the major amino acids detected in the TPH profile. After membrane fractionation process, those major amino acids were concentrated in the NF retentate (NFR). The NFR and NF permeate (NFP) have a higher protein solubility (>95 %) when compared to TPH (80 %). Higher oil and water binding capacity were observed in TPH and higher emulsifying and foam stability was found in UF retentate. The NFP showed the highest DPPH radical scavenging activity (65 %). The NFR contained antioxidant amino acid (30.3 %) showed the highest superoxide radical and reducing power activities. The TPH showed the highest iron chelating activity (75 %) compared to other peptide fractions. The effect of the membrane fractionation on the molecular weight distribution of the peptide and their bioactivities was underlined. We concluded that the TPH is a valuable source of bioactive peptides and their peptide fractions may serve as useful ingredients for application in food industry and formulation of nutritional products.

  12. Assessing Anthropogenic Impacts on Tunas, Sharks and Billfishes with Direct Observations of Human Fishers on the High Seas

    Science.gov (United States)

    Block, B.; Ferretti, F.; White, T.; De Leo, G.; Hazen, E. L.; Bograd, S. J.

    2016-12-01

    Anthropogenic impacts on marine predators have been examined within exclusive economic zones, but few data sets have enabled assessing human fishing impacts on the high seas. By combining large electronic tagging databases archiving mobile predator movements (e.g. Tagging of Pacific Pelagics, TAG A Giant, Animal Telemetry Network) with the global fishing catch and fishing effort data, from satellite tracks of vessels on the high seas (AIS), a better understanding of human use and exploitation at a global scale can be obtained. This capacity to combine the movements of mobile ocean predators (tunas, sharks, billfishes) with analyses of their human predator's behaviors, via examination of the global fishing fleet activities is unprecedented due to the new access researchers are garnering to these big satellite derived AIS databases. Global Fishing Watch is one example of such a data provider, that now makes accessible, the AIS data from the global community of maritime vessels, and has developed along with researchers new algorithms that delineate distinct types of fishing vessel behaviors (longline, purse seiner) and effort. When combined with satellite tagging data of mobile apex predators, oceanographic preferences, records of fishing fleets catches, targeted species and economic drivers of fisheries, new quantitative insights can be gained about the catch reporting of fleets, and the pelagic species targeted at a global scale. Research communities can now also examine how humans behave on the high seas, and potentially improve how fish stocks, such as tunas, billfishes, and sharks are exploited. The capacity to gather information on diverse human fishing fleets and behaviors remotely, should provide a wealth of new tools that can potentially be applied toward the resource management efforts surrounding these global fishing fleets. This type of information is essential for prioritizing regions of conservation concern for megaufauna swimming in our oceans.

  13. Development and validation of a spectrophotometry method for the determination of histamine in fresh tuna (Thunnus tunna)

    International Nuclear Information System (INIS)

    Chacon-Silva, Fainier; Barquero-Quiros, Miriam

    2002-01-01

    Histamine in foods can promote allergic reactions in sensitive persons. A colorimetric microscale method for histamine determination was developed and validated. Cu 2+ histamine chelation occurs at 9,5 ph. Dichloromethane extraction of the complex as the salt with tetrabromo phenolphthalein ethyl ester, allows photometric quantitation at 515 nm. The validation of micro method was accomplished trough its performance parameters, detection limit, quantitation limit, sensitivity, linearity, precision, recuperation. This methodology was applied to twenty raw tuna samples, collected in San Jose metropolitan area. It was found that 45% of analyzed samples had a histamine content in the range between 100-200 mg/kg. This finding indicates bacterial contamination, 15% of samples analyzed were over 500 mg/kg FDA level of sanitary risk. (Author) [es

  14. Blood Volume, Plasma Volume and Circulation Time in a High-Energy-Demand Teleost, the Yellowfin Tuna (Thunnus Albacares)

    DEFF Research Database (Denmark)

    Brill, R.W.; Cousins, K.L.; Jones, D.R.

    1998-01-01

    We measured red cell space with 51Cr-labeled red blood cells, and dextran space with 500 kDa fluorescein-isothiocyanate-labeled dextran (FITC-dextran), in two groups of yellowfin tuna (Thunnus albacares). Red cell space was 13.8+/-0.7 ml kg-1 (mean +/- s.e.m.) Assuming a whole- body hematocrit...... for albacore (Thunnus alalunga, 82-197 ml kg-1). Plasma volume within the primary circulatory system (calculated from the 51Cr-labeled red blood cell data) was 32.9+/-2.3 ml kg-1. Dextran space was 37.0+/-3.7 ml kg-1. Because 500 kDa FITC-dextran appeared to remain within the vascular space, these data imply...

  15. Recent researches on prebiotics for gut health in Thailand

    Directory of Open Access Journals (Sweden)

    Santad Wichienchot

    2015-11-01

    biosynthesis of FOS from sucrose. Optimal conditions for production of FOS were 0.26 U FTase, incubated with 0.46 M sucrose as substrate at pH 5.4 and 35ºC for 144 h. A maximum yield of scFOS (DP<5 was obtained (54.46%. The scFOS showed prebiotic property with PI of 1.29 in batch culture. Four formulas of canned tuna in spring water and tuna in mayonnaise and pouched tuna in salad cream and tuna in thousand island cream with added inulin were developed for commercial production. An addition of 5 % inulin for tuna in spring water and 7 % inulin for tuna in mayonnaise, tuna in thousand island and tuna in salad cream are recommended. The highest prebiotic index (PI scores of tuna in spring water and tuna in salad cream added 5% inulin were 1.82 and 0.93, respectively in three-stage continuous culture. In clinical study of tuna products, it was found that 5% inulin addition helps on improve bowel regularity. By-product from rubber wood sawdust could be used as alternative source of XOS. Among eight edible commercial mushrooms, Schizophyllum commune had highest total β-glucan content (59.87% dry basis. Conclusions: Research on prebiotics in Thailand had two mainly approaches including by extraction from natural occurring in fruits and vegetables and by enzymatic approach using hydrolysis and transferase activities from agricultural by-products and low cost raw materials. Prebiotic researches are covered in vitro, in vivo in rat and being investigated in clinical study related to gut health functional and immunity.

  16. THE POSSIBILITIES OF MARICULTURE DEVELOPMENT IN THE REPUBLIC OF CROATIA

    Directory of Open Access Journals (Sweden)

    Ivan Katavić

    2001-06-01

    Full Text Available A stronger development of national mariculture that would be compatible with natural potentialities has not been acheived yet, primarily because of uncertain political and global macroeconomic environment in which mariculture is being developed. Such a characterization can be applied for finfish production in the floating cages and hanging shellfish culture on longline systems while breeding of tuna fish in cages is expanding. An intensive development of tuna culture is a consequence of increased demands of Japan market, eventhough one can expect slow down of such a production because of limited catch of subadult fish on which tuna production is based. The mariculture development is looked upon as controlled breeding of existing and newly introduced autochthonous fish and shellfish species with constant efforts made to make these products competitive on national and interantional market. Thus the reduction of costs, better product quality and constant advancement of ecological and health standards are the main tasks of further mariculture development in Croatia. It is also indispensable to create the necessary preconditions for further development of tuna culture in floating cages particularly paying attention to ecological aspects of such a production. There are also needs to medernise the production of sea bass and gilthead sea bream, to reinforce mariculture infrastructure and logistic, in addition to sistematic support to research and development of new mariculture projects. That will be a way how mariculture can provide market with high valued marine products, to contribute improvement of trade and economic growth, and finaly to advance the living standards in rural and island communities in particular.

  17. Vulnerability of teleosts caught by the pelagic tuna longline fleets in South Atlantic and Western Indian Oceans

    Science.gov (United States)

    Lucena-Frédou, Flávia; Kell, Laurie; Frédou, Thierry; Gaertner, Daniel; Potier, Michel; Bach, Pascal; Travassos, Paulo; Hazin, Fábio; Ménard, Frédéric

    2017-06-01

    Productivity and Susceptibility Analysis (PSA) is a methodology for evaluating the vulnerability of a stock based on its biological productivity and susceptibility to fishing. In this study, we evaluated the vulnerability of 60 stocks of tuna, billfishes and other teleosts caught by the tuna longline fleets operating in the South Atlantic and Indian Ocean using a semi-quantitative PSA. We (a) evaluated the vulnerability of the species in the study areas; (b) compared the vulnerability of target and non-target species and oceans; (c) analyzed the sensitivity of data entry; and (d) compared the results of the PSA to other fully quantitative assessment methods. Istiophoridae exhibited the highest scores for vulnerability. The top 10 species at risk were: Atlantic Istiophorus albicans; Indian Ocean Istiompax indica; Atlantic Makaira nigricans and Thunnus alalunga; Indian Ocean Xiphias gladius; Atlantic T. albacares, Gempylus serpens, Ranzania laevis and X. gladius; and Indian Ocean T. alalunga. All species considered at high risk were targeted or were commercialized bycatch, except for the Atlantic G. serpens and R. laevis which were discarded, and may be considered as a false positive. Those species and others at high risk should be prioritized for further assessment and/or data collection. Most species at moderate risk were bycatch species kept for sale. Conversely, species classified at low risk were mostly discarded. Overall, species at high risk were overfished and/or subjected to overfishing. Moreover, all species considered to be within extinction risk (Critically Endangered, Endangered and Vulnerable) were in the high-risk category. The good concordance between approaches corroborates the results of our analysis. PSA is not a replacement for traditional stock assessments, where a stock is assessed at regular intervals to provide management advice. It is of importance, however, where there is uncertainty about catches and life history parameters, since it can

  18. U-Pb age constraints for the La Tuna Granite and Montevideo Formation (Paleoproterozoic, Uruguay): Unravelling the structure of the Río de la Plata Craton

    Science.gov (United States)

    Pamoukaghlián, Karina; Gaucher, Claudio; Frei, Robert; Poiré, Daniel G.; Chemale, Farid; Frei, Dirk; Will, Thomas M.

    2017-11-01

    The Río de la Plata Craton is a continental block that crops out in Uruguay, eastern Argentina, southernmost Brazil and Paraguay. It comprises in Uruguay the Piedra Alta, Tandilia and Nico Pérez terranes, separated by the Colonia and the Sarandí del Yí megashears. The La Tuna Granite, which intrudes the Araminda metasandstones in the Tandilia Terrane, was considered Cambrian in age and the intruded sandstones were assigned to the Neoproterozoic Piedras de Afilar Formation. We show that the granite is Paleoproterozoic in age and that the host metasandstones do not belong to the Piedras de Afilar Formation, but to the Paleoproterozoic Montevideo Formation. U-Pb LA ICP-MS of zircon ages for the La Tuna Granite yielded a concordant crystallization age of 2156 ± 26 Ma. Furthermore a metamorphic event at 2010 ± 9 Ma is revealed by Pb stepwise leaching dating of monazites. U-Pb detrital zircon ages of the host Araminda metasandstone yield an upper intercept discordia age of 2152 ± 29 Ma, which marks the intrusion of the La Tuna pluton, and which is in accordance with the zircon U-Pb LA ICP MS constraints. A concordant U-Pb detrital zircon age of 2465 ± 40 Ma provides a maximum depositional age constraint for the metapsammites. Comparing quartz arenites of the Ediacaran Piedras de Afilar Formation with the Araminda metaquartzites, we conclude that they are very similar regarding petrology but they differ in age and metamorphic overprint. Detrital zircons in quartz arenites of the Piedras de Afilar Formation show youngest ages of 1.0 Ga. On the other hand, detrital zircons recovered from the Araminda metasandstones and the age of the intruding granite allow interpreting a depositional age between 2465 and 2150 Ma. Nd model ages show crustal residence times in average more than 200 myr older for the Tandilia Terrane both in Uruguay and Argentina, with a significant Neoarchean component, which is lacking in the Piedra Alta Terrane. Whereas the Piedra Alta Terrane was

  19. Aniversario XXX de la creación del Centro Provincial de Información de Las Tunas

    Directory of Open Access Journals (Sweden)

    Edenny Reina Castillo Montes de Oca

    2014-08-01

    Full Text Available El 4 de enero de 1984 se inauguró el Centro Provincial de Información de Ciencias Médicas de Las Tunas, lo que permitió organizar la Red Provincial de Bibliotecas Médicas y con ello crear nuevos escenarios para desarrollar la actividad científico - informativa en el territorio; con la apertura de una biblioteca en cada unidad de salud. El Centro inicialmente estuvo ubicado en un pequeño local cercano a la biblioteca del Hospital “Dr. Ernesto Guevara de la Serna”. En el año 1988; con la misión, la visión y los objetivos de trabajo de su objeto social bien definidos, fue trasladado para la Facultad de Ciencias Médicas “Dr. Zoilo Marinello Vidaurreta”, de la provincia de Las Tunas y al crearse la Universidad de Ciencias Médicas en esta provincia, el Centro Provincial de Información pasa a ser una dependencia directa de la misma. En la primera década se sentaron las bases de lo que es hoy el Sistema Provincial de Información de Ciencias de la Salud, constituido por 25 bibliotecas médicas distribuidas en toda la geografía tunera, con la misión de: “garantizar la prestación de servicios de información científico tecnológica a la comunidad de profesionales que conforman el sector de la salud en la provincia, con el fin de elevar la calidad de la asistencia, la investigación, la docencia, la dirección y la cultura médica nueva y propiciar el hallazgo de soluciones que posibiliten enfrentar los problemas de salud”. Durante estos 30 años, los trabajadores de la información en el territorio han laborado con verdadera dedicación para cumplir cada tarea encomendada, asumir los retos del desarrollo continuo de la ciencia, asimilar las nuevas tecnologías y brindar a nuestros usuarios servicios y productos de alto valor informacional. La movilización de recursos lograda a través de los proyectos de la Red Nacional de Salud INFOMED, entre los cuales figuran: Proyecto SIDA, Proyecto para la Promoción de Publicaciones

  20. Estimation of the nopal cactus (Opuntia cochenillifera for color removal in drinking water Evaluación de la tuna (Opuntia cochenillifera para la remoción del color en agua potable

    Directory of Open Access Journals (Sweden)

    Joaquín Jiménez Antillón

    2012-12-01

    Full Text Available The efficiency of nopal cactus to remove color in river and artificial waters for human consumption was evaluated. The performance of nopal was compared with that of aluminum sulfate coagulant and a cationic flocculant.The river water was cha- racterized by high color, low turbidity, alkalinity and hardness, and a high percentage of dissolved oxygen. The cactus leaves showed no activity as unique coa- gulant to be evaluated only in river water. In artificial water, as a sole treatment (45 mg/l, an efficiency of 94% in color removal was observed, slightly higher than that of the conventional treatment (20 mg/l Al2 (SO43 and 2 mg/l of cationic flocculant with a removal of 89%. However, water treated with nopal left a residual COD value doubled (21 mg/l compared to con- ventional treatment. In the treatment of artificial water, nopal as a flocculant showed a color removal of 92% and a residual COD of 31.5 mg /l applied at a dose of 22.5 mg/l and 7 mg/l of Al2 (SO43. The nopal was not very effective to remove the color produced by humic substances in waters of low turbidity and alkalinity, but its applicability as a coagulant/flocculant in waters of high turbidity and alkalinity is promising. It is recommended to extract the active ingredients of natural products to reduce the organic load of treated water and prevent the formation of disin- fection byproducts.El estudio evaluó la eficiencia del cactus de la tuna para remover el color en agua de río y agua artificial para el consumo humano. Se comparó su desem- peño con el coagulante sulfato de aluminio y un floculante catiónico. El agua fluvial se caracterizó por presentar alto color, baja turbidez, alcalinidad y dureza y alto porcentaje de oxígeno disuelto. Las hojas de tuna no mostraron actividad como coagulante único al ser evaluadas en agua de río. Se observó una eficiencia de remoción de color del 94% en agua artificial, cuando se aplicó como tratamiento único (45 mg/l, poco

  1. Mineralización de talco asociada a los cuerpos ultramáficos de la Faja del Río de Las Tunas, Cordillera Frontal de Mendoza

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    Gargiulo, María Florencia

    2011-12-01

    Full Text Available Talc mineralization related to the ultramafic bodies of the Río de Las Tunas belt, Frontal Cordillera of Mendoza province. This contribution shows the main characteristics of the talc mineralization related to the Río de Las Tunas ultramafic bodies in the Salamanca Mining District, Frontal Cordillera of Mendoza province. According to the parageneses defined on the studied samples, three generations of talc were established: 1º crystallized in metaperidotites and related to the prograde stage of the regional metamorphism; 2º crystallized inreaction zones (mostly in the talc zone developed at the boundary between metaperidotites and their country-rocks.These reaction zones evidence a metasomatic process due to geochemical gradient between the ultramafic body and their country-rocks. This process was developed during the retrogression of the regional metamorphic cycle. 3º Talc present in shear-zones that cut across the ultramafic bodies. The extreme serpentinization of the ultramaficbodies is concentrated in shear-zones where the serpentine is subsequently replaced by talc ± carbonates related with a hydrothermal stage. Aqueous fluids relatively enriched in CO2 flowed through these shear-zones causing the cease of serpentine formation favoring the talc and/or carbonates. Mined talc deposits are those in shear zones and reaction zones. They are mostly industrial-, asbestine- or talcschist-type. The talc related to the hydrothermal stage can locally reach first and extra qualities.

  2. Morbidity rate due to renal malformations in patients from Las Tunas province

    Directory of Open Access Journals (Sweden)

    Silvio Laffita Estévez

    2015-09-01

    Full Text Available Background: The urogenital congenital malformations represent the first place within the genetic malformations in the province of Las Tunas.Objective: To characterize the renal congenital malformations in pediatric patients of the herein mentioned province, from 2010 to 2014.Methods: A descriptive study was carried out with 283 paediatric patients with renal and urinary tract congenital malformation, in the province and period herein stated. The variables included: sex, clinical manifestations, more frequent malformations, which of them needed surgical treatment, the positive results of the radiological studies, and the malformations that developed into chronic renal failure. The data were analyzed according to descriptive statistics.Results: The male sex represented a 63,96 %. A 57,95 % of the children were asymptomatic. Within the congenital malformations ectasia prevailed with a 49,47 %. 100 % of the cases with a compromise of the ureteovesiccal union, ureterocele and shell of the posterior urethra, 78 % of the patients with stenosis of the ureteropyelic union and 4,76 % of the patients with vesicoureteric reflux needed surgical treatment. The radiological studies were highly positive. 1,41 % of the patients developed chronic renal failure.Conclusions: Most of the patients with renal and urinary tract congenital malformations were diagnosed before the 5 years of age. Only four patients developed chronic renal failure.

  3. Specific activity and derived intervention levels for cesium-137 in Costa Rican export goods: tuna fish, coffee and powdered milk

    International Nuclear Information System (INIS)

    Loria, L.G.; Mora, Patricia

    1994-01-01

    Cesium-137 is a fission product of 235 U and 239 Pu. After a major nuclear accident, it is released into the atmosphere and in the far field region it will produce radioactively contaminated food and drinking water. This paper will study the specific activity of 137 Cs in three Costa Rican export products: tuna fish, coffee and powdered milk. The average specific activities found are as follows: 0.89 ± 0.41, 1.16 ± 0.76 and 4.53 ± 2.00 Bq kg -1 . They represent low values compared to their derived intervention levels: 1.25 x 10 7 , 1.25 x 10 7 and 2.44 x 10 5 Bq kg -1 , respectively. (Author)

  4. The influence of finfish aquaculture on benthic fish and crustacean assemblages in Fitzgerald Bay, South Australia

    Directory of Open Access Journals (Sweden)

    Jason E. Tanner

    2015-09-01

    Full Text Available The influence of sea-cage aquaculture on wildfish assemblages has received little attention outside of Europe. Sea-cage aquaculture of finfish is a major focus in South Australia, and while the main species farmed is southern bluefin tuna (Thunnus maccoyii, there is also an important yellowtail kingfish (Seriola lalandi industry. Yellowtail kingfish aquaculture did not appear to have any local or regional effects on demersal assemblages (primarily fish, but also some crustaceans surveyed by baited remote underwater video (BRUV in Fitzgerald Bay. We did, however, detect small scale spatial variations in assemblages within the bay. The type of bait used strongly influenced the assemblage recorded, with significantly greater numbers of fish attracted to deployments where sardines were used as the bait to compared to those with no bait. The pelleted feed used by the aquaculture industry was just as attractive as sardines at one site, and intermediate between sardines and no bait at the other. There was significant temporal variability in assemblages at both farm sites and one control site, while the second control site was temporally stable (over the 9 weeks of the study. Overall, the results suggested that aquaculture was having little if any impact on the abundance and assemblage structure of the demersal macrofauna in Fitzgerald Bay.

  5. Caracterización de los pacientes con cirrosis hepática atendidos en Las Tunas

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    Alina Torreblanca Xiques

    2014-11-01

    Full Text Available Se realizó un estudio observacional descriptivo, con el objetivo de caracterizar los pacientes con cirrosis hepática (CH, atendidos en el servicio de gastroenterología del Hospital General Docente “Dr. Ernesto Guevara de la Serna”, Las Tunas, Cuba, en el período comprendido entre febrero de 2012 y febrero de 2014. Se estudiaron 55 pacientes con cirrosis hepática diagnosticada por laparoscopia. Predominaron los pacientes del grupo de edad entre 50 y 59 años, siendo el sexo masculino el más afectado. Las principales manifestaciones clínicas que se apreciaron en estos pacientes fueron la ascitis y los edemas en miembros inferiores, así como las complicaciones más frecuentemente encontradas, la ascitis y la hemorragia digestiva alta. El alcoholismo y la etiología viral por virus C se presentaron con mayor frecuencia, predominando el primero. En el mayor por ciento de los pacientes debutó la enfermedad con al menos una complicación

  6. Characteristics and nutritional value of whole wheat cracker fortified with tuna bone bio-calcium powder.

    Science.gov (United States)

    Benjakul, Soottawat; Karnjanapratum, Supatra

    2018-09-01

    Whole wheat cracker fortified with tuna bone bio-calcium (Bio-Ca) powder was developed as health-promoting food rich in calcium. Fortification with different levels of Bi-Ca, over the range of 0-50% of whole wheat flour (w/w) on quality and sensory properties of crackers, were determined. Color, thickness, weight and textural properties of crackers varied with the different levels of Bio-Ca powder added, but it was found that up to 30% could be added without detrimental effect on sensory properties. Scanning electron microscopic images showed that the developed crackers were less porous and had a denser structure, compared to the control. Based on scanning electron microscopy-energy dispersive X-ray spectroscopic (SEM-EDX), the cracker containing Bio-Ca powder had calcium and phosphorous distribution with higher intensity, compared to the control. The fortified crackers were rich in calcium and phosphorous with higher protein content but lower fat, carbohydrate, cholesterol and energy value, compared to the control. Copyright © 2018 Elsevier Ltd. All rights reserved.

  7. REPOSITORIO DIGITAL PARA UNA MEJOR GESTIÓN DE LA INFORMACIÓN CIENTÍFICA EN LA UNIVERSIDAD LAS TUNAS

    Directory of Open Access Journals (Sweden)

    Yunior Rodríguez Rodríguez

    2015-07-01

    Full Text Available El presente artículo aborda la importancia de la implementación de un repositorio digital para una mejor gestión de la información científica en la Universidad de Las Tunas, donde podamos socializar y consultar las tesis de grado, maestría y doctorado, resultados de proyectos de investigación, libros, revistas, manuscritos creados en nuestra Universidad e incluso digitalizar libros de única edición y de difícil acceso. Se ofrecen definiciones de varios autores así como los antecedentes de la gestión de información científica en nuestra universidad, además de las ventajas de su creación. También se muestra el diagnóstico y la estrategia para si implementación.

  8. Teenage pregnancy, epidemiological behavior in Las Tunas during the period 2012 - 2014

    Directory of Open Access Journals (Sweden)

    Enelis Reyes Reyes

    2015-06-01

    Full Text Available Background: teenage pregnancy is a medical risk to be considered, not only for determining an increase of maternal morbidity and an estimated of 2 to 3 times infant mortality, but also as one of the most important factors in the occurrence of congenital malformations.Objective: to determine the epidemiological behavior of teenage pregnancy in Las Tunas province during the period 2012 - 2014.Methods: a descriptive, observational and retrospective study of the behavior of teenage pregnancy was carried out in the province and time period previously stated. The study was performed in municipalities and People's Councils. The universe consisted of 148 169 women of childbearing age and the sample comprised 3 309 pregnant female teenagers from 12 to 19 years old.Results: the phenomenon of teenage pregnancy continues, but the province and its municipalities show favorable data; 2013 was the one of the most negative results, being Manatí and Amancio municipalities the most significant ones; in all the municipalities there are People's Councils with results that are higher than municipal and provincial averages. The adolescent fertility rate in the province was between 39.0 and 45.2 per 1000, being 2013 and Amancio municipality the ones with the highest incidence.Conclusions: although the teenage pregnancy continues, the province and its municipalities show favorable data, resulting from an integrated and successful health programs, involving Provincial Genetics Network work.

  9. Comportamiento de la lepra en la provincia de Las Tunas, 2003-2012

    Directory of Open Access Journals (Sweden)

    Martha O León Cabrales

    2014-08-01

    Full Text Available Se realizó un estudio descriptivo de corte transversal, para determinar algunas características epidemiológicas de la incidencia de la lepra, que es una enfermedad transmisible, tan antigua como el hombre mismo. El universo estuvo constituido por los 103 casos notificados con lepra en la provincia de Las Tunas, en el período de enero de 2003 a diciembre de 2012. La información se obtuvo por las encuestas epidemiológicas existentes en el Departamento de Estadística de la Dirección Provincial de Salud y en el Centro Provincial de Higiene, Epidemiología y Microbiología. Se creó una base de datos en Epinfo versión 3.3.3, donde se tabularon los datos de las encuestas. El análisis de los resultados se expresó en números absolutos, tasas y porcentajes para su mejor interpretación, obteniéndose como resultado que la tasa de detección de casos tiene un comportamiento irregular, el año de mayor incidencia fue el 2009, con 20 casos. Se notificaron tres casos de lepra infantil; las formas paucibacilares representaron el 51,5%; el modo de detección más frecuente fue el espontáneo. Existe transmisión activa y todo ello puede ser reflejo de la ausencia de un trabajo consolidado en el programa de control de la enfermedad

  10. Post-column derivatization capillary electrochromatography for detection of biogenic amines in tuna-meat.

    Science.gov (United States)

    Oguri, Shigeyuki; Okuya, Yukie; Yanase, Yukiko; Suzuki, Sayaka

    2008-08-15

    A system to perform post-column derivatization capillary electrochromatography (CEC) was developed for the first time. The system mainly included a 4-microm (O.D.) silica packed column (200 mm effective length x 0.1 mm inner diameter I.D.) with micro-magnetic particles (MMPs) frits, a T-junction connector, an in-line fluorescence detector and a high-voltage power supply. The system was evaluated by using histamine (HA) as a standard biogenic amine for this study. A 5 microM HA solution was loaded at the anodic site of the capillary column by applying 3 kV for 5s. Then, HA was electrophoretically eluted with a 20mM phosphate buffer (pH 7) by applying 3 kV, and was derivatized with 3mM o-phthalaldehyde (OPA)/N-acetylcysteine (NAC) in 100 mM borate (pH 10), which was continuously delivered through the reagent-loading capillary tube by gravity into the T-junction connector. HA derivative was finally detected with the in-line fluorescence detector (lambda(Ex)=340 nm, lambda(Em)=450 nm) at 9.7 min after sample loading. To test the utility of this system, it was next employed for its ability to detect the presence of HA and other kinds of biogenic amines, including cadaverine (Cad), spermidine (Spm) and tyramine (Tyr) in tuna-meat, once the validity of the method had been confirmed.

  11. Evaluation of the oxidative status in Oreochromis niloticus fed with tuna by-product meal: possible human health impact.

    Science.gov (United States)

    Saїdi, Saber Abdelkader; Azaza, Mohamed Salah; van Pelt, Jos; El Feki, Abdelfattah

    2014-10-01

    The influence of tuna by-product meal (TBM) diets on the activities of antioxidant enzymes in the muscles, gill and kidney of tilapia was evaluated. The control diet (A0) used fish meal (FM) as the sole source of animal protein and the other three diets (A10-A30), 33%-100% of FM was substituted by TBM at 10% increments. The cytotoxicity of liver and muscles cytosol extracts in human liver cell HepG2 was undertaken. The activities of glutathione S-transferase, superoxide dismutase, catalase and TBARS values in the kidney of fish fed with diet A30 were significantly different (p<0.05) and no alterations were observed in muscle and gill anti-oxidant activities. Our study has confirmed that the cytosol extract does not exhibit cytotoxic effects on the HepG2 cells. These results indicate that the use of TBM as a total replacement for FM into tilapia diets seems to have oxidative stress, thus generating effect on fish metabolism.

  12. Advances in Integrating Autonomy with Acoustic Communications for Intelligent Networks of Marine Robots

    Science.gov (United States)

    2013-02-01

    whole or in part is permitted for any purpose of the United States Government . This thesis should be cited as: Toby Edwin Schneider, 2013. Advances...Sonar AUV #Environmental Sampling Environmental AUV +name : string = OEX Ocean Explorer +name : string = Hammerhead Iver2 +name : string = Unicorn ...executable» Google Earth Bluefin 21 AUV ( Unicorn ) MOOS Computer GPS «serial» Bluefin 21 AUV (Macrura) MOOS Computer «acoustic» Micro-Modem «wired

  13. Evaluating alternative management strategies for bigeye tuna, Thunnus obesus, in the Indian Ocean

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    Yuhe Tong

    2013-09-01

    Full Text Available Bigeye tuna (Thunnus obesus support a large commercial fishery in the Indian Ocean. However, explicit management strategies and harvest control rules are yet to be developed for the management of this fishery. We used a stochastic age-structured production model as an operating model to evaluate several potential management strategies under different assumptions of stock productivity. Five management strategies—constant fishing mortality, constant catch, quasi-constant catch, constant escapement, and status-dependent strategies—were evaluated and compared using the performance indicators including average catch, average spawning stock biomass, variation in catch, average fishing mortality and lowest biomass during the time period considered in the simulation. This study shows that (1 for the constant catch strategy, an annual catch of 90000 t would result in a low risk of stock being overfished while obtaining a stable catch; (2 for the constant fishing mortality strategy fishing mortality of 0.3 per year could yield a higher catch, but might have a high probability (64% of stock dropping below the spawning stock biomass (SSB that could achieve maximum sustainable yield (SSBmsy; and (3 for the quasi-constant catch strategy an annual catch of 110000 t was sustainable if the current SSB was higher than SSBmsy. Constant escapement and status-dependent strategies were robust with respect to different levels of virgin recruitment and steepness. This study suggests that it is important to incorporate uncertainties associated with key life history, fisheries and management processes in evaluating management strategies.

  14. Pertinencia del esquema terapéutico antimicrobiano en las infecciones del tracto urinario, Las Tunas

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    Maité Rúa del Toro

    2015-12-01

    Full Text Available Se realizó un estudio descriptivo de corte transversal, de utilización de medicamentos de tipo indicación-prescripción con elementos de esquema terapéutico, con el objetivo de evaluar la pertinencia del esquema terapéutico de antimicrobianos, para el tratamiento de las infecciones del tracto urinario en la atención primaria de salud en el municipio Las Tunas, en el período comprendido entre enero a diciembre de 2012. El universo estuvo constituido por el total de pacientes con prescripción médica de antimicrobianos por impresión diagnóstica de sepsi o infección urinaria, la muestra fue de 120 pacientes. Los datos se obtuvieron de fuentes primarias y secundarias, procesados por estadística descriptiva, a través del análisis porcentual.  Las infecciones del tracto urinario, baja y alta no complicadas, fueron las que más afectaron a la población. Los antimicrobianos más utilizados: cotrimoxazol, ciprofloxacina y ácido nalidíxico. A la mayoría de los pacientes se les prescribieron terapéuticas antimicrobianas no pertinentes, debido a la selección inadecuada.

  15. Mitochondrial genome of the bullet tuna Auxis rochei from Indo-West Pacific collection provides novel genetic information about two subspecies.

    Science.gov (United States)

    Li, Mingming; Guo, Liang; Zhang, Heng; Yang, Sen; Chen, Xinghan; Lin, Haoran; Meng, Zining

    2016-09-01

    Previously morphological studies supported the division of the bullet tuna into the two subspecies, Auxis rochei rochei and A. rochei eudorax. As a cosmopolitan species, A. rochei rochei ranges in the Indo-West Pacific and Atlantic oceans, while A. rochei eudorax inhabits in eastern Pacific region. Here, we used the HiSeq next-generation sequencing technique to determine the mitochondrial genome (mitogenome) of A. rochei from Indo-West Pacific collection, and then compared our data with mitogenomic sequences of the Atlantic and eastern Pacific retrieved from NCBI database. Results showed the mitogenome of A. rochei from three geographic collections shared the same genes and gene order, similar to typical teleosts. Also, we examined a low level of nucleotide diversity among these mitogenomic sequences. Interestingly, nucleotide diversity of intra-subspecies (Atlantic versus Indo-West) was higher than that of inter-subspecies (Atlantic versus eastern Pacific, Indo-West versus eastern Pacific).

  16. Histamine formation and the freshness of yellowfin tuna (Thunnus albacares stored at different temperatures

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    B.K.K.K. Jinadasa

    2015-12-01

    Full Text Available This study was conducted to investigate the effect of storage temperatures on the shelf life of yellowfin tuna (YFT loins by studying of microbial, chemical and organoleptic changes. Shelf life of YFT was determined through changes in total aerobic bacterial plate counts (APC, total volatile basic nitrogen (TVB-N trimethylamine (TMA, organoleptic properties and histamine development during storage at 0, 4 and 7°C. Based on TVB-N value indices, YFT maintained an acceptable shelf life for 21, 17 and 12 days at 0, 4 and 7°C, respectively. Nevertheless, YFT was rejected earlier by the sensory panellists than their TVB-N value indicated. Histamine development was found to be lower than the European Union safety level for 100 mg/kg fish during storage at 0 and 7°C for 21 and 17 days, respectively. Aerobic bacteria initially dominated the micro-flora on YFT; however, as storage time increased, aerobic bacteria became dominant at cold storage, but the numbers exceeded the International Commission on Microbiological Specifications for Foods (ICMSF limit of 107 cfu/g in storage at 7°C after 17 days. Therefore, it can be concluded that the storage of fresh YFT in below 4°C has good enough to the shelf life of products (two weeks.

  17. Efectividad de la acupuntura en el tratamiento del síndrome del túnel del carpo, Las Tunas

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    Aydelián Jevey González

    2014-08-01

    Full Text Available Se realizó un estudio de intervención con el objetivo de determinar la efectividad de la acupuntura en el tratamiento del Síndrome del Túnel del Carpo, en pacientes que fueron atendidos en el Policlínico Docente Manuel Piti Fajardo del municipio de Las Tunas, en el período comprendido desde enero hasta diciembre de 2008. La muestra la conformaron 50 pacientes mayores de 14 años. Se les aplicó un tratamiento con acupuntura diario en un total de quince sesiones, utilizando los puntos: IG-4, IG-11, ID-3, P-7 y TR-5, conjuntamente con la terapia medicamentosa. Los resultados fueron satisfactorios, la casi totalidad de los pacientes (49 tuvo una evolución clínica positiva, al disminuir los síntomas y signos. Las recaídas fueron mínimas luego de treinta días de aplicado el tratamiento, el consumo de medicamentos disminuyó de forma discreta y los efectos adversos al tratamiento acupuntural fueron mínimos. El tratamiento fue efectivo

  18. In vitro calcium availability in bakery products fortified with tuna bone powder as a natural calcium source.

    Science.gov (United States)

    Nemati, Mahnaz; Kamilah, Hanisah; Huda, Nurul; Ariffin, Fazilah

    2015-08-01

    Avoidance of dairy products due to lactose intolerance can lead to insufficiency of calcium (Ca) in the body. In an approach to address this problem, tuna bone powder (TBP) was formulated as a calcium supplement to fortify bakery products. In a study, TBP recovered by alkaline treatment contained 38.16 g/100 g of calcium and 23.31 g/100 g of phosphorus. The ratio of Ca:P that was close to 2:1 was hence comparable to that in human bones. The availability of calcium in TBP was 53.93%, which was significantly higher than most calcium salts, tricalcium phosphate (TCP) being the exception. In vitro availability of calcium in TBP-fortified cookies or TCP-fortified cookies were comparable at 38.9% and 39.5%, respectively. These values were higher than the readings from TBP-fortified bread (36.7%) or TCP-fortified bread (37.4%). Sensory evaluation of bakery products containing TBP or TCP elicited comparable scores for the two additives from test panels. Hence, TBP could be used in the production of high calcium bakery products that would enjoy consumer acceptance.

  19. Utilización del mucílago de tuna (opuntia ficus-indica) en el mejoramiento de la calidad del agua de consumo humano, en la comunidad de Pusir Grande, provincia del Carchi

    OpenAIRE

    Morejón Díaz, Bayro Javier

    2017-01-01

    Mejorar la calidad del agua de consumo humano utilizando mucílago de tuna (Opuntia ficus-indica) en la comunidad de Pusir Grande, Provincia del Carchi. Dentro del proceso para tratamiento de agua para consumo humano, se utilizan coagulantes químicos como el Sulfato de Aluminio Al2 (SO4)3, sin embargo, según estudios realizados, se ha comprobado que este insumo deja aluminio residual, el mismo que podría causar enfermedades como el Alzheimer. En la naturaleza, existen especies vegetativa...

  20. Banning is not enough: The complexities of oceanic shark management by tuna regional fisheries management organizations

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    Mariana Travassos Tolotti

    2015-07-01

    Full Text Available Recently, declining populations of several pelagic shark species have led to global conservation concerns surrounding this group. As a result, a series of species-specific banning measures have been implemented by Regional Fishery Management Organizations (RFMOs in charge of tuna fisheries, which include retention bans, finning bans and trading bans. There are both positive and negative aspects to most management measures, but generally, the positive aspects outweigh the negatives, ensuring the measure is beneficial to the resource and its users in the long term. Banning measures are a good first step towards the conservation of pelagic shark species, especially since they improve conservation awareness among fishers, managers and the public. Measures that impose total bans, however, can lead to negative impacts that may jeopardize the populations they were intended to protect. The majority of pelagic shark catches are incidental and most sharks die before they reach the vessel or after they are released. The legislation set out by RFMOs only prevents retention but not the actual capture or the mortality that may occur as a result. Managers should be fully aware that the development and implementation of mitigation measures are critical for a more effective conservation strategy.

  1. Control de la calidad del diagnóstico coproparasitológico de geohelmintos intestinales en la provincia Las Tunas

    Directory of Open Access Journals (Sweden)

    Rebeca Margarita Laird Pérez

    2015-11-01

    Full Text Available Con el objetivo de evaluar la calidad del diagnóstico coproparasitológico de los geohelmintos intestinales, se realizó un control de la calidad externo activo en la provincia de Las Tunas, de abril a junio de 2012. Se evaluaron las habilidades de 22 profesionales de la Atención Primaria de Salud, para realizar el procedimiento de Kato Katz, la identificación parasitaria e informe de resultados y se les midió el nivel de conocimientos sobre aspectos de interés del diagnóstico de estos gusanos. Se realizaron evaluaciones cualitativas de cada parámetro y se estableció un esquema general de calificación. Las principales deficiencias se presentaron en el informe de resultados, específicamente en la identificación de las especies antropozoonóticas (72,7% evaluados de regular, mientras que la mayoría tuvo resultados favorables en la realización de Kato Katz (54,5% excelente y 27,2% bien y en el nivel de conocimientos (13,6% excelente y 54,5% bien.

  2. Evaluación de los componentes de la biodiversidad en la finca agroecológica "Las Palmitas" del municipio Las Tunas Evaluation of the biodiversity components in the agroecological farm "Las Palmitas", Las Tunas municipality

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    Yamilka Salmón

    2012-09-01

    Full Text Available El objetivo del trabajo fue evaluar los componentes de la biodiversidad funcional y su contribución a la productividad y la eficiencia de la producción en la finca "Las Palmitas" (en la provincia Las Tunas, Cuba. Esta tiene un área de 15,44 ha y se dedica a la producción diversificada de cultivos, frutales y animales. Se realizó una caracterización agroecológica y se evaluó la funcionalidad de la biodiversidad, a partir del diseño de un modelo de análisis como guía de la investigación que incluyó los componentes: diversidad de árboles, diversidad de la producción y riqueza de especies. A través del diagnóstico se cuantificó el número de individuos de cada especie agrícola y pecuaria, y se caracterizaron de acuerdo con su funcionalidad dentro del sistema agroproductivo. Las fuentes de información primaria fueron la observación directa, las entrevistas informales y la aplicación de una encuesta semiestructurada, que incluyó las variables de interés para el diagnóstico. Se calcularon los índices de Shannon (2,8 y Margalef (5,70, los que permitieron visualizar la contribución de la diversidad al incremento de la productividad. Los indicadores de diversidad del agroecosistema alcanzaron valores óptimos para los sistemas diversificados, los cuales contribuyeron a la autosufiencia alimentaria, la eficiencia y la productividad. Los resultados indican una relevancia económica y social, que le confiere sostenibilidad y resiliencia al sistema agroecológico evaluado, por lo que constituye un modelo para su diseminación en condiciones locales o similares a las de este estudio.The objective of the work was to evaluate the components of functional biodiversity and their contribution to the productivity and efficiency of production in the farm "Las Palmitas" (Las Tunas province, Cuba. It has an area of 15,44 ha and it is dedicated to diversified crop, fruit and animal production. An agroecological characterization was made and

  3. Complex coacervation with whey protein isolate and gum arabic for the microencapsulation of omega-3 rich tuna oil.

    Science.gov (United States)

    Eratte, Divya; Wang, Bo; Dowling, Kim; Barrow, Colin J; Adhikari, Benu P

    2014-11-01

    Tuna oil rich in omega-3 fatty acids was microencapsulated in whey protein isolate (WPI)-gum arabic (GA) complex coacervates, and subsequently dried using spray and freeze drying to produce solid microcapsules. The oxidative stability, oil microencapsulation efficiency, surface oil and morphology of these solid microcapsules were determined. The complex coacervation process between WPI and GA was optimised in terms of pH, and WPI-to-GA ratio, using zeta potential, turbidity, and morphology of the microcapsules. The optimum pH and WPI-to-GA ratio for complex coacervation was found to be 3.75 and 3 : 1, respectively. The spray dried solid microcapsules had better stability against oxidation, higher oil microencapsulation efficiency and lower surface oil content compared to the freeze dried microcapsules. The surface of the spray dried microcapsules did not show microscopic pores while the surface of the freeze dried microcapsules was more porous. This study suggests that solid microcapsules of omega-3 rich oils can be produced using WPI-GA complex coacervates followed by spray drying and these microcapsules can be quite stable against oxidation. These microcapsules can have many potential applications in the functional food and nutraceuticals industry.

  4. Comparative ecology of widely distributed pelagic fish species in the North Atlantic: Implications for modelling climate and fisheries impacts

    Science.gov (United States)

    Trenkel, V. M.; Huse, G.; MacKenzie, B. R.; Alvarez, P.; Arrizabalaga, H.; Castonguay, M.; Goñi, N.; Grégoire, F.; Hátún, H.; Jansen, T.; Jacobsen, J. A.; Lehodey, P.; Lutcavage, M.; Mariani, P.; Melvin, G. D.; Neilson, J. D.; Nøttestad, L.; Óskarsson, G. J.; Payne, M. R.; Richardson, D. E.; Senina, I.; Speirs, D. C.

    2014-12-01

    This paper reviews the current knowledge on the ecology of widely distributed pelagic fish stocks in the North Atlantic basin with emphasis on their role in the food web and the factors determining their relationship with the environment. We consider herring (Clupea harengus), mackerel (Scomber scombrus), capelin (Mallotus villosus), blue whiting (Micromesistius poutassou), and horse mackerel (Trachurus trachurus), which have distributions extending beyond the continental shelf and predominantly occur on both sides of the North Atlantic. We also include albacore (Thunnus alalunga), bluefin tuna (Thunnus thynnus), swordfish (Xiphias gladius), and blue marlin (Makaira nigricans), which, by contrast, show large-scale migrations at the basin scale. We focus on the links between life history processes and the environment, horizontal and vertical distribution, spatial structure and trophic role. Many of these species carry out extensive migrations from spawning grounds to nursery and feeding areas. Large oceanographic features such as the North Atlantic subpolar gyre play an important role in determining spatial distributions and driving variations in stock size. Given the large biomasses of especially the smaller species considered here, these stocks can exert significant top-down pressures on the food web and are important in supporting higher trophic levels. The review reveals commonalities and differences between the ecology of widely distributed pelagic fish in the NE and NW Atlantic basins, identifies knowledge gaps and modelling needs that the EURO-BASIN project attempts to address.

  5. Trophic structure in the Gulf of Lions marine ecosystem (north-western Mediterranean Sea) and fishing impacts

    Science.gov (United States)

    Bănaru, D.; Mellon-Duval, C.; Roos, D.; Bigot, J.-L.; Souplet, A.; Jadaud, A.; Beaubrun, P.; Fromentin, J.-M.

    2013-02-01

    The Gulf of Lions ecosystem was described using the Ecopath mass-balance model to characterise its structure and functioning and to examine the effects of the multispecific fisheries operating in this area. The model is composed of 40 compartments, including 1 group of seabirds, 2 groups of cetaceans, 18 groups of fish, 12 groups of invertebrates, 5 groups of primary producers, detritus and discards. Input data were based on several recurrent scientific surveys, two alternative datasets for fishing data, stock assessment outputs, stomach content analyses and published information. Results showed that the functional groups were organised into five trophic levels with the highest one represented by dolphins, anglerfish, Atlantic bluefin tuna, European hake and European conger. European pilchard and European anchovy dominated in terms of fish biomass and catch. Other fish with high biomass such as Atlantic mackerel and blue whiting were highly important in the food web. Seabirds, dolphins and cuttlefish-squids represented keystone species. Important coupled pelagic-demersal-benthic interactions were described. The 7 different fisheries analysed were operating at mean trophic levels situated between 2.6 for small artisanal boats, and 4.1 for purse seines (> 24 m) targeting large pelagic fish, indicating an intensively exploited ecosystem. Large trawlers (24-40 m) had the highest impact on most of the groups considered; while purse seines (12-24 m) targeting small pelagic fish had the lowest impact. Preliminary results highlighted the importance of data sources for further ecosystem and fisheries analyses and management scenarios.

  6. Optimization of marine waste based-growth media for microbial lipase production using mixture design methodology.

    Science.gov (United States)

    Sellami, Mohamed; Kedachi, Samiha; Frikha, Fakher; Miled, Nabil; Ben Rebah, Faouzi

    2013-01-01

    Lipase production by Staphylococcus xylosus and Rhizopus oryzae was investigated using a culture medium based on a mixture of synthetic medium and supernatants generated from tuna by-products and Ulva rigida biomass. The proportion of the three medium components was optimized using the simplex-centroid mixture design method (SCMD). Results indicated that the experimental data were in good agreement with predicted values, indicating that SCMD was a reliable method for determining the optimum mixture proportion of the growth medium. Maximal lipase activities of 12.5 and 23.5 IU/mL were obtained with a 50:50 (v:v) mixture of synthetic medium and tuna by-product supernatant for Staphylococcus xylosus and Rhizopus oryzae, respectively. The predicted responses from these mixture proportions were also validated experimentally.

  7. Yellowfin Tuna (Thunnusalbacares Fishing Ground Forecasting Model Based On Bayes Classifier In The South China Sea

    Directory of Open Access Journals (Sweden)

    Zhou Wei-feng

    2017-08-01

    Full Text Available Using the yellowfin tuna (Thunnusalbacares,YFTlongline fishing catch data in the open South China Sea (SCS provided by WCPFC, the optimum interpolation sea surface temperature (OISST from CPC/NOAA and multi-satellites altimetric monthly averaged product sea surface height (SSH released by CNES, eight alternative options based on Bayes classifier were made in this paper according to different strategies on the choice of environment factors and the levels of fishing zones to classify the YFT fishing ground in the open SCS. The classification results were compared with the actual ones for validation and analyzed to know how different plans impact on classification results and precision. The results of validation showed that the precision of the eight options were 71.4%, 75%, 70.8%, 74.4%, 66.7%, 68.5%, 57.7% and 63.7% in sequence, the first to sixth among them above 65% would meet the practical application needs basically. The alternatives which use SST and SSH simultaneously as the environmental factors have higher precision than which only use single SST environmental factor, and the consideration of adding SSH can improve the model precision to a certain extent. The options which use CPUE’s mean ± standard deviation as threshold have higher precision than which use CPUE’s 33.3%-quantile and 66.7%-quantile as the threshold

  8. Comportamiento del síndrome de inmovilización. Hogar de Ancianos, Las Tunas, 2011

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    Mirian Thomas Santiesteban

    2015-11-01

    Full Text Available Se realizó un estudio descriptivo de corte transversal para describir el comportamiento de la inmovilización en el Hogar de Ancianos Carlos Pupo Font, de la provincia de Las Tunas, durante el año 2011. El universo lo constituyeron la totalidad de pacientes institucionalizados y la muestra estuvo conformada por 98 pacientes con algún tipo de inmovilización. Las variables a medir fueron: tipo de inmovilidad, edad, sexo, raza, hábitos tóxicos, estado mental, cambios fisiológicos ocurridos con el envejecimiento, enfermedades frecuentes, complicaciones y factores sociales. La información se obtuvo de la revisión de historias clínicas, fue procesada estadísticamente usando el Microsoft Excel, los resultados se mostraron a través de tablas y gráficos y se compararon con la literatura nacional e internacional. Se obtuvo predominio de pacientes con inmovilización relativa; el grupo de edad más afectado fue de 75 a 84 años, el sexo femenino, la raza blanca y el estado mental correspondiente a los demenciados; el hábito tóxico predominante fue el café; los cambios fisiológicos con el envejecimiento y las enfermedades más frecuentes corresponden a las del aparato músculo esquelético; las complicaciones predominantes fueron las digestivas seguidas por las respiratorias.

  9. Alteraciones genéticas cutáneas diagnosticadas en la infancia, Las Tunas 2010-2012

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    Yordania Velázquez Ávila

    2014-08-01

    Full Text Available Las enfermedades genéticas y los defectos genéticos con afectación cutánea son causa frecuente de estigmatización de las personas que las padecen, afectando su adecuada inserción en la sociedad y con ello su calidad de vida. Se estableció una consulta especializada y multidisplinaria en el hospital pediátrico provincial “Mártires de Las Tunas”, fundamentalmente con especialistas de dermatología, genética y pediatría. Se realizó un estudio descriptivo, transversal y prospectivo, en el período del año 2010 al 2012, para caracterizar a estos pacientes. Las variables estudiadas relacionadas fueron el sexo, la edad biológica al diagnóstico, el municipio de procedencia y la mortalidad. Los resultados se expusieron en tablas de contingencia de N x N. Existió predominio de las genodermatosis, seguido de los defectos congénitos y pocas enfermedades genéticas con afectación cutánea, siendo estas últimas responsables de la mayoría de las muertes. Las genodermatosis más representadas fueron la ictiosis, las mastocitosis y las neurofibromatosis, la edad más frecuente al diagnóstico fue el grupo de los menores de dos años; prevaleció el sexo femenino. La mortalidad fue baja y los municipios más afectados por genodermatosis fueron Las Tunas, Majibacoa y Colombia

  10. Assessment of DNA quality in processed tuna muscle tissues

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    Zora Piskatá

    2016-06-01

    Full Text Available Authentication of tuna fish products is necessary to assure consumers of accurate labelling of food products. The quality of species specific DNA crucially affects the efficiency of amplification during the subsequent PCR. The problem in DNA detection in canned products lies in the possibility of the fragmentation of DNA during the processing technologies and the use of ingredients (oil, salt, spice, that may inhibit the PCR reaction. In this study three DNA extraction methods were compared: DNeasy Blood and Tissue Kit, DNeasy mericon Food Kit and Chemagic DNA tissue 10 Kit. The quantity and quality of DNA were evaluated by measuring DNA concentration and ratios A260/A280. Several parameters were estimated: the effect of whole and mechanically treated muscle, sterilization procedure used in canned process (high temperature in combination with high pressure and addition of raw materials. The highest DNA concentrations were observed in non-processed muscle that is not influenced by the sterilization process. Canned whole muscle demonstrated lower DNA yield, and furthermore, the mechanical treatment (canned ground resulted in lower values of DNA concentration that was registered by using all three types of DNA extraction kits. DNeasy mericon Food Kit produced DNA of higher concentration in non-processed sample, Chemagic DNA tissue 10 Kit delivered higher DNA yields than kits DNeasy Blood and Tissue Kit and DNeasy mericon Food Kit in canned samples, although the purity was lower, but still within the range 1.7 - 2.0. DNA was considered to be satisfactorily pure in all three types of samples and using all three types of DNA isolation. In case of the samples enriched of ingredients and treated with sterilization process as whole or ground muscle Chemagic DNA tissue 10 Kit produced in all samples (whole and ground muscle the highest values of DNA concentration, but almost all values of A260/A280 were lower than 1.7. Therefore DNeasy mericon Food Kit

  11. Standardization of a geo-referenced fishing data set for the Indian Ocean bigeye tuna, Thunnus obesus (1952-2014)

    Science.gov (United States)

    Wibawa, Teja A.; Lehodey, Patrick; Senina, Inna

    2017-02-01

    Geo-referenced catch and fishing effort data of the bigeye tuna fisheries in the Indian Ocean over 1952-2014 were analyzed and standardized to facilitate population dynamics modeling studies. During this 62-year historical period of exploitation, many changes occurred both in the fishing techniques and the monitoring of activity. This study includes a series of processing steps used for standardization of spatial resolution, conversion and standardization of catch and effort units, raising of geo-referenced catch into nominal catch level, screening and correction of outliers, and detection of major catchability changes over long time series of fishing data, i.e., the Japanese longline fleet operating in the tropical Indian Ocean. A total of 30 fisheries were finally determined from longline, purse seine and other-gears data sets, from which 10 longline and 4 purse seine fisheries represented 96 % of the whole historical geo-referenced catch. Nevertheless, one-third of total nominal catch is still not included due to a total lack of geo-referenced information and would need to be processed separately, accordingly to the requirements of the study. The geo-referenced records of catch, fishing effort and associated length frequency samples of all fisheries are available at PANGAEA.864154" target="_blank">doi:10.1594/PANGAEA.864154.

  12. 遠洋マグロ延縄漁業の経営分析

    OpenAIRE

    小野, 征一郎; 山本, 尚俊; 中原, 尚知

    2004-01-01

    The Japanese tuna fishing industry turned into import-industry after the mid 1990's, at which time Taiwan's tuna fishing industry established a comparative advantage. The Japanese tuna fishing industry experienced a 20% vessel reduction in 1998 without owners receiving Tomohosho (compensation system among vessels owners). Starting from this reduction in the fishing vessels and using the unique Japanese tuna Sashimi market, the tuna fishing industry have largely been able to draw Flag-of -conv...

  13. Aspectos clínicos endoscópicos, relacionados con la diverticulosis de colon. Las Tunas, enero 2011 – diciembre 2012

    Directory of Open Access Journals (Sweden)

    Liem Fonseca Chong

    2015-12-01

    Full Text Available Se realizó un estudio descriptivo de series de casos, en el Hospital “Dr. Ernesto Guevara de la Serna” de Las Tunas, con el objetivo de caracterizar los aspectos clínicos endoscópicos de la diverticulosis del colon, en el periodo comprendido desde enero 2011 a diciembre 2012. El universo quedó constituido por todos los pacientes a los que se les realizó colonoscopia, y la muestra por todos los pacientes con diagnóstico endoscópico de enfermedad diverticular. Para la obtención de los datos primarios se revisaron los expedientes clínicos de 101 pacientes con esta enfermedad, efectuando un cuestionario, en el cual se recogieron, analizaron y tabularon las variables, utilizando como medida de resumen el porcentaje. Se procesaron los datos y se interpretaron los resultados, concluyendo que en el grupo de pacientes estudiados predominaron las mujeres de más de 65 años, con dolor abdominal como síntoma principal y las hemorroides, como enfermedad que más se asoció a esta padecimiento, siendo el colon sigmoides el más afectado.

  14. Use of a counterfactual approach to evaluate the effect of area closures on fishing location in a tropical tuna fishery.

    Directory of Open Access Journals (Sweden)

    Tim K Davies

    Full Text Available Spatial closures are widely used in marine conservation and fisheries management and it is important to understand their contribution to achieving management objectives. Many previous evaluations of closed area effects have used before-after comparisons, which, without controlling for a full range of factors, cannot ascribe changes in fleet behaviour to area closures per se. In this study we used a counterfactual approach to disentangle the effect of two closed areas on fishing location from other competing effects on the behaviour of the Indian Ocean tuna purse seine fishery. Our results revealed an inconsistent effect of the one of the closed areas between years, after taking into account the influence of environmental conditions on fleet behaviour. This suggests that the policy of closing the area per se was not the main driver for the fleet allocating its effort elsewhere. We also showed a marked difference in effect between the two closed areas resulting from their different locations in the fishery area. These findings highlight the need to account for other key fleet behavioural drivers when predicting or evaluating the contribution of area closures to achieving conservation and fishery management objectives.

  15. Present and future potential habitat distribution of Carcharhinus falciformis and Canthidermis maculata by-catch species in the tropical tuna purse-seine fishery under climate change

    Directory of Open Access Journals (Sweden)

    Nerea eLezama Ochoa

    2016-03-01

    Full Text Available By-catch species from tropical tuna purse seine fishery have been affected by fishery pressures since the last century; however, the habitat distribution and the climate change impacts on these species are poorly known. With the objective of predicting the potential suitable habitat for a shark (Carcharhinus falciformis and a teleost (Canthidermis maculata in the Indian, Atlantic and Eastern Pacific Oceans, a MaxEnt species distribution model (SDM was developed using data collected by observers in tuna purse seiners. The relative percentage of contribution of some environmental variables (depth, sea surface temperature, salinity and primary production and the potential impact of climate change on species habitat by the end of the century under the A2 scenario (scenario with average concentrations of carbon dioxide of 856 ppm by 2100 were also evaluated. Results showed that by-catch species can be correctly modelled using observed occurrence records and few environmental variables with SDM. Results from projected maps showed that the equatorial band and some coastal upwelling regions were the most suitable areas for both by-catch species in the three oceans in concordance with the main fishing grounds. Sea surface temperature was the most important environmental variable which contributed to explain the habitat distribution of the two species in the three oceans in general. Under climate change scenarios, the largest change in present habitat suitability is observed in the Atlantic Ocean (around 16% of the present habitat suitability area of Carcharhinus falciformis and Canthidermis maculata, respectively whereas the change is less in the Pacific (around 10% and 8% and Indian Oceans (around 3% and 2 %. In some regions such as Somalia, the Atlantic equatorial band or Peru’s coastal upwelling areas, these species could lose potential habitat whereas in the south of the equator in the Indian Ocean, the Benguela System and in the Pacific coast of

  16. Susceptibility of dry-cured tuna to oxidative deterioration and biogenic amines generation: I. Effect of NaCl content, antioxidant type and ageing.

    Science.gov (United States)

    Roseiro, L C; Santos, C; Gonçalves, H; Serrano, C; Aleixo, C; Partidário, A; Lourenço, A R; Dias, M Abreu; da Ponte, D J B

    2017-08-01

    This study aimed to assess lipid oxidation and biogenic amine (BA) development in "muxama", a dry-cured tuna muscle product, as affected by salt content, antioxidant type and ageing time. Overall, BA contents decreased with NaCl level (2785.1mgkg -1 , 1148.1mgkg -1 and 307.7mgkg -1 ) and increased with ageing time (366.2mgkg -1 , 1711.8mgkg -1 and 2959.2mgkg -1 in the final product (T0), and after 1 (T1) and 3 (T3) months of ageing, respectively). Regardless of the test conditions, the most concentrated BA was always tyramine. For the ageing periods considered in the present study, malondialdehyde formation was affected by the NaCl level, with the saltiest samples exhibiting lower content. Rosemary and sage extracts represented promising technological options for preserving muxama from oxidation and to minimize the presence of a fishy flavour and odour, but this treatment may cause the colour to lose some of its redness and become less appealing. Copyright © 2017 Elsevier Ltd. All rights reserved.

  17. Local Wisdom of Smoked Fish Processing as Tourism Product in Situbondo Regency

    Directory of Open Access Journals (Sweden)

    Ika Junianingsih

    2014-09-01

    Full Text Available Marine and fisheries resources in Situbondo Regency were potential to supports seafood processing, e.g. traditional smoked processing of mackerel tuna (Euthynnus affinis Cantor based on local wisdom. This research was aimed to assess and analyzes: the processing of smoked mackerel tuna based on local wisdom, public perception towards the processing of smoked mackerel tuna, and the quality of smoked mackerel tuna. The research carried out on January to April 2014, in Jangkar Village, Situbondo regency. The study included depth interview from key persons with questionnaire and organoleptic test. The public perception on smoked mackerel tuna was taken by questionnaire from 85 respondents, whereas the quality of smoked mackerel tuna was analyzed with laboratory proximate test. Result of this research showed that smoked mackerel tuna processing used traditional smoking instrument and fuel material. The smoking stall used several banana midrib stem above the furnace that made of cement and bricks, while the fuel use coconut coir which created the typical flavors of the smoked mackerel tuna. The average organoleptic value of the smoked mackerel tuna appearance is 7.89 (intact, clean, brown, very shiny specific type, flavors of 8.24 (less fragrant, smoked enough, without additional disturbing odor, taste of 8.41 (delicious, savory, texture of 7.40 (solid, compact, fairly dry, tight inter-flesh tissue, and colour of 7.20 (attractive, specific, shiny brown colour type. Public perception showed that the community knowledge on smoked mackerel tuna processing is good, creates good flavors of smoked mackerel tuna and favored by the community, thus also encourage the community to support the conservation of this traditional smoked processing. Lab analysis showed that the proximate value of 0.99% carbohydrates, 29.59% protein, 1.14% fat, 2.89% mineral, 1.88% ash, and 63.4% water. Processing of smoked mackerel tuna as tourism product of Situbondo Regency is

  18. Analysis of biogenic carbonates by inductively coupled plasma-mass spectrometry (ICP-MS). Flow injection on-line solid-phase preconcentration for trace element determination in fish otoliths.

    Science.gov (United States)

    Arslan, Z; Paulson, A J

    2002-04-01

    The aragonite deposits within the ear bones (otoliths) of teleost fish retain a chemical signal reflecting the life history of fish (similar to rings of trees) and the nature of fish habitats. Otoliths dissolved in acid solutions contain high concentrations of calcium and a variety of proteins. Elimination of matrix salts and organic interferences during preconcentration is essential for accurate determination of trace elements in otolith solutions by inductively coupled plasma-quadrupole mass spectrometry. An iminodiacetate-based chelating resin (Toyopearl AF-Chelate 650 M) has been used for on-line preconcentration and matrix separation for the determination of 31 transition and rare elements. Successful preconcentration of the elements was achieved at pH 5 by on-line buffering, except Mn which required pH 8.8. Sample solutions were loaded on to the column for 1 min at 3.2 mL min(-1), and then eluted directly into the mass spectrometer with 4% v/v nitric acid. This procedure enabled up to 25-fold preconcentration with successful removal of the calcium matrix. The effect of heat-assisted oxidation with concentrated nitric acid was investigated to eliminate the organic matrix. It was found that heating to dryness after dissolution and further mineralization with the acid significantly improved the retention of the transition elements. The method was validated by analysis of a certified reference material produced from saggittal otoliths of emperor snapper ( Lutjanus sebae), and then applied to the determination of trace metal concentrations in juvenile bluefin tuna ( Thunnus thynnus) from the Western Pacific Ocean.

  19. Extruded snacks with the addition of different fish meals

    Directory of Open Access Journals (Sweden)

    Elenice Souza dos Reis GOES

    2015-01-01

    Full Text Available Abstract Tilapia, salmon, tuna and sardine meals were prepared to develop and analyze extruded snacks with residue meal from fish processing. Residue meals were included in five types of corn snacks: control (0% fish meal and four with 9% tilapia, salmon, tuna and sardine meals. Although moisture, lipids and carbohydrates rates did not differ among the snacks, protein rates increased with the increment of fish meal, reaching 11.85% in the tuna snack. Tuna and sardine snacks had the highest iron levels. The most abundant fatty acids were linoleic, oleic, palmitic, linolenic and stearic acids, with sardine, salmon and tuna snacks presenting the highest values of n-3 series fatty acids. Greater luminosity rate was reported for salmon snack, followed by tilapia, tuna and sardine snacks. The highest sensory acceptance index was verified in tilapia (78.07% and salmon (72.40%. A 9% addition of residue meals of tilapia, salmon and tuna improved the nutritional value of the snacks.

  20. Vigilancia inmunoepidemiológica del sarampión, rubéola, parotiditis, poliomielitis y tos ferina en la provincia Las Tunas, 2010-2013

    Directory of Open Access Journals (Sweden)

    Enelis Reyes Reyes

    2014-08-01

    Full Text Available La inmunoepidemiología se ha convertido en imprescindible en el sistema de vigilancia moderno de salud, en la evaluación de los programas de vacunación, en la definición de la inmunidad poblacional y en su papel en la prevención de enfermedades. Este estudio describe el comportamiento en la provincia de Las Tunas de la vigilancia inmunoepidemiológica de cinco enfermedades prevenibles: sarampión, rubéola, parotiditis, poliomielitis y tos ferina. La investigación cubrió el periodo desde el año 2010 hasta el 2013. Los resultados muestran la eficacia de las vacunas empleadas, sin ningún caso positivo registrado y avalan a la vigilancia inmunoepidemiológica establecida desde la atención primaria de salud hasta la red de higiene y epidemiología del municipio, la provincia y la nación. Este sistema es necesario para evaluar con antelación posibles riesgos de enfermedades y la decisión oportuna de medidas de intervención

  1. Does Evidence Matter? How Middle School Students Make Decisions About Socioscientific Issues

    Science.gov (United States)

    Emery, Katherine Beth

    People worldwide are faced with making decisions daily. While many decisions are quick (e.g., what clothes to wear), others, such as those about environmental issues (e.g., overfishing), require more thought and have less immediate outcomes. How one makes such decisions depends on how one interprets, evaluates, and uses evidence. The central objective of this thesis was to investigate environmental science literacy in general, and specifically, to understand how evidence and other factors impact decision-making. I conducted three main studies: First, I provide an example of how decision-making practices affect environmental systems and services through a descriptive case study of Atlantic bluefin tuna overfishing. I reviewed the scientific, historical and cultural factors contributing to a paradox of marine preservation in the Mediterranean and highlighted the need for education and informed decision-making about such social and ecological issues. This study motivated me to investigate how people make decisions about environmental issues. Second, I interviewed middle school students to understand how they describe and evaluate evidence hypothetically and in practice about environmental issues---a key component of environmental literacy. Students discussed how they would evaluate evidence and then were then given a packet containing multiple excerpts of information from conflicting stakeholders about an environmental issue and asked how they would make voting or purchasing decisions about these issues. Findings showed that students' ideas about evaluating evidence (e.g., by scientific and non-scientific criteria) match their practices in part. This study was unique in that it investigated how students evaluate evidence that (1) contradicts other evidence and (2), conflicts with the student's prior positions. Finally, I investigated whether middle school students used evidence when making decisions about socioscientific issues. I hypothesized that holding a strong

  2. Evolutionary origin of the Scombridae (tunas and mackerels: members of a paleogene adaptive radiation with 14 other pelagic fish families.

    Directory of Open Access Journals (Sweden)

    Masaki Miya

    Full Text Available Uncertainties surrounding the evolutionary origin of the epipelagic fish family Scombridae (tunas and mackerels are symptomatic of the difficulties in resolving suprafamilial relationships within Percomorpha, a hyperdiverse teleost radiation that contains approximately 17,000 species placed in 13 ill-defined orders and 269 families. Here we find that scombrids share a common ancestry with 14 families based on (i bioinformatic analyses using partial mitochondrial and nuclear gene sequences from all percomorphs deposited in GenBank (10,733 sequences and (ii subsequent mitogenomic analysis based on 57 species from those targeted 15 families and 67 outgroup taxa. Morphological heterogeneity among these 15 families is so extraordinary that they have been placed in six different perciform suborders. However, members of the 15 families are either coastal or oceanic pelagic in their ecology with diverse modes of life, suggesting that they represent a previously undetected adaptive radiation in the pelagic realm. Time-calibrated phylogenies imply that scombrids originated from a deep-ocean ancestor and began to radiate after the end-Cretaceous when large predatory epipelagic fishes were selective victims of the Cretaceous-Paleogene mass extinction. We name this clade of open-ocean fishes containing Scombridae "Pelagia" in reference to the common habitat preference that links the 15 families.

  3. Analysis of Social and Emotional Development of Orphaned Youth in terms of Self Concept and Resilience: Study at Child Care Children's Home (PSAA Tunas Bangsa Pati

    Directory of Open Access Journals (Sweden)

    Santoso Santoso

    2017-08-01

    Full Text Available The purpose of this study is to describe the development of the Young Social da Emotional Self-concept and in terms of resilience in the PSAA Tunas Bangsa Pati. The method used is descriptive research with this type of development studies dab data obtained will be analyzed by cross sectional method. The results showed that the concept of self-possessed teenager PSAA is not good, it can be seen from the description of several indicators show that the concept of self-assessment of her teenage less well because many feel insecure and inferiority. Judging from the resilience, the general adolescent PSAA good enough. It can be seen from the emotion management capabilities of any events that are considered less menyengakan life. So overall it can be concluded that the social development of adolescents PSAA poorly and emotional development PSAA pretty good when viewed from the concept of self and resilience.

  4. PENGARUH PANJANG ENTRES TERHADAP KEBERHASILAN PENYAMBUNGAN TANAMAN ALPUKAT (PERSEA AMERICANA MILL.

    Directory of Open Access Journals (Sweden)

    Dirgahani Putri

    2016-06-01

    Full Text Available Beragamnya hasil produksi dan kualitas buah alpukat dapat diperbaiki dengan metode penyambungan. Penyambungan merupakan kegiatan untuk mengga-bungkan dua atau lebih sifat unggul dalam satu tanaman. Penelitian ini bertujuan mengetahui pengaruh berbagai panjang entres terhadap keberhasilan penyam-bungan tanaman alpukat. Rancangan percobaan yang digunakan dalam penelitian ini adalah Rancangan Acak Kelompok dengan lima perlakuan panjang entres, yaitu 3 cm, 6 cm, 9 cm, 12 cm, dan 15 cm.Setiap perlakuan diulang sebanyak lima kali dan setiap perlakuan terdiri atas lima tanaman;sehingga jumlah totalnya sebanyak 125 tanaman. Pengamatan dilakukan pada peubah persentase sambung hidup, jumlah tunas, panjang tunas, jumlah daun, dan diameter batang atas. Berbagai panjang entres tidak memberikan pengaruh yang nyata pada peubah persentase sambung hidup, panjang tunas terpanjang, jumlah daun, dan diameter batang atas tetapi berpengaruh nyata pada peubah jumlah tunas. Perlakuan panjang entres 15 cm memberikan hasil tertinggi untuk jumlah tunas, panjang tunas, jumlah daun dan diameter batang atas, sedangkan untuk persentase hidup perlakuan 6 cm, 12 cm memberikan hasil tertinggi yaitu 100%. Perlakuan panjang entres 3 cm adalah perlakuan yang memberikan pengaruh yang rendah pada persentase sambung hidup (yaitu 92%, peubah jumlah tunas, panjang tunas, serta diameter batang atas pada berbagai umur tanaman alpukat.

  5. Spatial Patterns and Temperature Predictions of Tuna Fatty Acids: Tracing Essential Nutrients and Changes in Primary Producers.

    Directory of Open Access Journals (Sweden)

    Heidi R Pethybridge

    Full Text Available Fatty acids are among the least understood nutrients in marine environments, despite their profile as key energy components of food webs and that they are essential to all life forms. Presented here is a novel approach to predict the spatial-temporal distributions of fatty acids in marine resources using generalized additive mixed models. Fatty acid tracers (FAT of key primary producers, nutritional condition indices and concentrations of two essential long-chain (≥C20 omega-3 fatty acids (EFA measured in muscle of albacore tuna, Thunnus alalunga, sampled in the south-west Pacific Ocean were response variables. Predictive variables were: location, time, sea surface temperature (SST and chlorophyll-a (Chla, and phytoplankton biomass at time of catch and curved fork length. The best model fit for all fatty acid parameters included fish length and SST. The first oceanographic contour maps of EFA and FAT (FATscapes were produced and demonstrated clear geographical gradients in the study region. Predicted changes in all fatty acid parameters reflected shifts in the size-structure of dominant primary producers. Model projections show that the supply and availability of EFA are likely to be negatively affected by increases in SST especially in temperate waters where a 12% reduction in both total fatty acid content and EFA proportions are predicted. Such changes will have large implications for the availability of energy and associated health benefits to high-order consumers. Results convey new concerns on impacts of projected climate change on fish-derived EFA in marine systems.

  6. SEBARAN HASIL TANGKAPAN MADIDIHANG (Thunnus albacares Bonnaterre, 1788 DI SAMUDERA HINDIA BAGIAN TIMUR

    Directory of Open Access Journals (Sweden)

    Arief Wujdi

    2015-06-01

    Full Text Available Ikan Madidihang (Thunnus albacares Bobbaterre, 1788 merupakan salah satu komoditaspenting bagi industri perikanan di Indonesia dimana hasil tangkapannya merupakan yang tertinggi dibandingkan jenis tuna lainnya. Saat ini, kondisi stok madidihang berada dalam kondisi yang baik. Namun, untuk menjaga kelangsungan pemantaatan stok ikan tuna, diperlukan upaya pengelolaan sumber daya tuna. Penelitian ini bertujuan untuk mengetahui distribusi laju tangkap madidihang di Samudera Hindia Bagian Timur. Pengumpulan data dilakukan oleh pemantau ilmiah pada kapal rawai tuna komersial yang berbasis di Benoa, Pelabuhanratu dan Bungus dari Agustus 2005 sampai Desember 2013; serta program monitoring pendaratan tuna yang berbasis di Benoa tahun 2010-2013. Hasil penelitian menunjukkan bahwa laju pancing bervariasi secara bulanan dan tahunan. Rata-rata bulanan laju pancing tertinggi terjadi pada Mei (0,17 ekor/100 pancing dan terendah pada Februari (0,01 ekor/100 pancing, sedangkan rata-rata laju pancing tahunan tertinggi pada 2006 (0,11 ekor/100 pancing dan terendah pada 2011 (0,06 ekor/100 pancing. Rata-rata laju pancing tahunan cenderung mengalami penurunan sebesar 29,48%/ tahun. Ikan madidihang tertangkap oleh rawai tuna Indonesia tersebar dari 0°-34° LS dan 76°-134° BT. Sebaran spasial laju pancing tertinggi berada di sekitar Kepulauan Mentawai dan selatan Jawa Timur hingga Nusa Tenggara. Yellowfin tuna (Thunnus albacares Bobbaterre, 1788 is one of the important commodity for the fishing industry in Indonesia because it has the highest catches compared with other tunas. Nowadays, the yellowfin stock is currently in good condition (not overfished and not subject to overfishing. However, management measure was required to support sustainability of tuna fishery. This study aims to determine the hook rate distribution of yellowfin tuna in the Eastern Indian Ocean. Data was obtained by scientific observers on commercial tuna longline vessels

  7. Caracterización de la trombosis protésica en el servicio de cardiología de Las Tunas. 2006-2011

    Directory of Open Access Journals (Sweden)

    Maikel Santos Medina

    2015-11-01

    Full Text Available Se realizó un estudio descriptivo y transversal en el Servicio de Cardiología del Hospital “Dr. Ernesto Guevara de la Serna” de la provincia de Las Tunas, con el objetivo de caracterizar la trombosis de prótesis valvular en el período entre 2006 y 2011. El universo estuvo conformado por los 34 pacientes ingresados en el servicio por sospecha de trombosis protésica y la muestra por los 29 casos con diagnóstico definitivo de trombosis valvular protésica. Se utilizó la estadística descriptiva a través del análisis porcentual. La edad promedio de los casos fue de 47 años. Predominaron los pacientes del sexo femenino, con prótesis en posición mitral, con anticoagulación inadecuada y con ritmo sinusal en el electrocardiograma al ingreso. El edema agudo del pulmón fue la forma de presentación de disfunción ventricular izquierda que predominó. La mayoría de los pacientes fueron tratados con estreptoquinasa, lográndose resolución de la trombosis en la mayoría de los casos, con un número escaso de complicaciones tras el tratamiento trombolítico.

  8. Análisis de plasmas inducidos por láser con excitación multipulso para el proceso de ablación de areolas de Tuna

    Directory of Open Access Journals (Sweden)

    Teresa Flores

    2010-01-01

    Full Text Available Introducción: La técnica de análisis de plasmas inducidos por láser (LIBS, posee importantes ventajas como son que la muestra no requiere preparación previa, puede estar en fase sólida, liquida o gaseosa y tener cualquier forma y dimensión, se requiere una cantidad mínima de material y, finalmente, el análisis se realiza en tiempo real. Estas ventajas, hacen posible el seguimiento en tiempo real de un proceso de ablación láser, incluso para muestras de composición compleja. Para el monitoreo de un proceso industrial, esta herramienta sería más adecuada, si se cuenta con una calibración del equipo y un protocolo particular definido. En el trabajo, se ejemplifica esta posibilidad para el caso de la ablación láser de areolas de Tuna (fruto de el Opuntia ficus-indica. Método: Se realiza el análisis LIBS de muestras de tuna, tanto en las areolas como en la corteza. Para la excitación del plasma se emplea un láser de Nd:YAG en régimen de Q:Switch con tren de pulsos. Con el objeto de asegurar el reconocimiento de las líneas en los espectros LIBS, se realizaron análisis en patrones de composición conocida, estableciéndose un protocolo para la interpretación de los espectros. Resultados: Se logró una clara lectura de la línea de H ubicada en 656.2 nm. Se estableció un protocolo para la interpretación de los espectros, que permitió la identificación de 49 picos característicos. Finalmente, se determina la composición para la corteza y la areola y se lleva a cabo una comparación cualitativa entre éstas. Discusión: Se muestra que la excitación láser en forma de tren de pulsos, entendido este régimen como modalidad particular del Q:Switch, permite la determinación eficiente de elementos, con una adecuada relación señal-ruido. Por otra parte, que es posible determinar diferencias composicionales evidentes entre corteza y la areola, lo cual permite monitorear un proceso de ablación de areolas con láser de manera

  9. Caracterización del claustro de profesores de la carrera de Estomatología en la provincia de Las Tunas

    Directory of Open Access Journals (Sweden)

    Maydelyn Ureña Espinosa

    2015-06-01

    Full Text Available Conocer las características de un claustro contribuye a mejorar su proceso de superación. La caracterización facilita el poder identificar los rasgos personales, profesionales, laborales y otros, que influyen en el trabajo y permiten organizar con calidad la superación, teniendo en cuenta algunos elementos individuales importantes para el mejoramiento pedagógico profesional. El objetivo de este trabajo fue caracterizar el claustro de profesores de la carrera de Estomatología en la provincia de Las Tunas, en el período 2010-2014. Se realizó un estudio descriptivo, en el mencionado claustro, en todas las sedes universitarias de la provincia, en el referido período de estudio. La población de estudio estuvo conformada por los 106 profesores que imparten clases en cualquier asignatura correspondiente a esta especialidad. Se aplicó un instrumento de recogida de datos a la totalidad de los profesores de forma individual. Como resultado se obtuvo que el grupo de edad que predominó fue el de 35 a 44 años y el sexo femenino; en cuanto a la profesión, prevalecen los estomatólogos y los profesores asistentes; el número de doctores en ciencias es insuficiente, así como, las publicaciones y la participación de los docentes en los eventos

  10. 76 FR 51943 - Proposed Information Collection; Comment Request; International Dolphin Conservation Program

    Science.gov (United States)

    2011-08-19

    ... vessel characteristics and operations in the ETP, the origin of tuna and tuna products, and certain other... origin of tuna (if requested by the NOAA Administrator); 10 hours for an experimental fishing operation... October 18, 2011. ADDRESSES: Direct all written comments to Diana Hynek, Departmental Paperwork Clearance...

  11. Certification of Trace Elements and Methylmercury Mass Fractions in Tuna Fish Flesh Homogenate IAEA-436A

    International Nuclear Information System (INIS)

    2017-01-01

    The primary goal of the IAEA Environment Laboratories is to assist Member States in the use of both stable and radioactive isotope analytical techniques to understand, monitor and protect the marine environment. The major impact of large coastal cities on marine ecosystems is a primary concern for the IAEA. The Marine Environment Studies Laboratory, as a part of IAEA Environment Laboratories in Monaco, acts as the analytical support centre for Member State laboratories and is the pillar of the quality assurance programme for the determination of non-nuclear pollutants, trace elements and organic contaminants in the marine environment. The marine pollution assessments required to understand such impacts depend on accurate knowledge of contaminant concentrations in various environmental compartments. Good laboratory practice and quality assurance and control are essential components of the analytical process for the production of data. Quality control procedures are commonly based on analyses of certified reference materials to assess reproducibility and measurement biases and uncertainties. Certified reference materials are key tools for quality assurance. They are used to validate analytical methods and to establish traceability to internationally agreed references. They are cornerstones for laboratory accreditation and the correct implementation of national and international regulations. In the development and validation of new methods, certified reference materials play a vital role in state of the art technologies where measurements are critical. The IAEA supports the development and production of environmental certified reference materials for monitoring laboratories in Member States. The reference material IAEA-436, characterized for trace elements and methylmercury mass fractions in tuna fish flesh homogenate, was produced by the IAEA in Monaco in 2006. This publication describes the production of certified reference material IAEA-436A, which is based on the

  12. Oxidative stability of fish oil-enriched mayonnaise-based salads

    DEFF Research Database (Denmark)

    Sørensen, Ann-Dorit Moltke; Nielsen, Nina Skall; Jacobsen, Charlotte

    2010-01-01

    The oxidative stability of fish oil-enriched mayonnaise-based salads and the influence of different vegetables in shrimp and tuna salads were evaluated. Moreover, the lipid oxidation in the presence of 1% oregano, rosemary, or thyme in fish oil-enriched tuna salad was assessed. The results obtain......-oxidative effect of shrimp. The effect of ingredients in tuna salads was inconclusive, possibly due to a high content of volatiles in the vegetables themselves. However, the addition of spices increased the oxidative stability of tuna salad (oregano>rosemary>thyme)....

  13. Decision Support System For Approval New Student And Majoring Selection Based On Student’s Interest And Talent By Fuzzy Multiple Decision Making, Simple Additive Weighting And Buble Sort Method In SMK Telekomunikasi Tunas Harapan

    Directory of Open Access Journals (Sweden)

    Dewi Nurdiyah

    2016-11-01

    Full Text Available Decision Support System for New Student Acceptance aims to simplify the Decision Maker who is the Committee of New Student Acceptance to select prospective new students based on eight criteria. That is registration number, the average value of National Examinations, medical tests, interview, their achievements, salary of parents per month, number of siblings who are still in school and administration department and give recommendations for the major of accepted students based on their interests and talents. There are four major in SMK Telekomunikasi Tunas Harapan, these are Rekayasa Perangkat Lunak (RPL, Teknik Komputer dan Jaringan (TKJ, Multimedia and Teknik Kendaraan Ringan (TKR. And the talents be measured by math test, electro test, daw test and physics test.

  14. 培养液组胺的检测及鲣鱼产组胺菌的生物活性评价%Detection Histamine in Nutrient Solution and Evaluation of Biological Characteristics of Histamine-Forming Bacteria in Raw Skipjack Tuna

    Institute of Scientific and Technical Information of China (English)

    周秀锦; 杨建; 周向阳; 沈飚; 吴祖芳

    2012-01-01

    Histamine in nutrient solution is derived with dansyl chloride, determined by HPLC-VWD and quantified by isotope internal standard method with 1,7-Diaminoheptane. Histamine-forming bacteria were selected from the prescreening step using Actis's identification medium from skipjack tuna tissue, and true his-tamine formers were confirmed by HPLC method. Effects of temperature and pH on growth and histamine pro-duction of histamine-forming bacteria were studied. The results showed that the limit of determination of the method for nutrient solution is 0.5μg/mL, the recovery range is 100%-107%; two histamine formers isolated from skipjack tuna tissue were named as J2 and J4, which could produced histamine in trypticase soy broth supplemented with 1.0% L-histidine. The optimal temperature of growth of them were both 30 ℃, and the op- timal growth pH were 7 and 6, respectively. The optimal temperature of histamine production of them were 25 ℃ and 30 ℃, respectively. The optimal pH were both 5. The maximum of histamine reached 12.47 mg/L under the suitable culture condition.%通过直接将培养液中的组胺经丹酰氯衍生化生成稳定的物质,以1,7-二氨基庚烷为内标,建立高效液相色谱-紫外检测器(HPLC-VWD)方法检测培养液中的组胺;并研究了温度和pH对产组胺菌生长和组胺产生的影响。结果表明,培养液中组胺的检测方法定量限为0.5μg/mL,回收率在100%~107%,满足方法培养液中组胺的检测。经分离得到的2株产组胺菌分别记为J2和J4,2株菌在添加L-组氨酸的胰酶大豆肉汤里均能够产生组胺;菌株J2和J4最适生长温度均为30℃,最适pH分别为7和6,菌株J2和J4产组胺的最适温度分别为25℃和30℃,最适pH均为5,在适宜的实验条件下组胺产生量最大值为12.47 mg/L。

  15. Factores de riesgo para la enteropatía parasitaria en niños del municipio Las Tunas

    Directory of Open Access Journals (Sweden)

    Arley Fajardo Ochoa

    2015-11-01

    Full Text Available Se realizó un estudio analítico de tipo caso control, con el objetivo de determinar los factores de riesgo para la enteropatía parasitaria, como principal causa del síndrome de malabsorción intestinal en niños del municipio de Las Tunas durante el año 2011. El mismo fue realizado en el Hospital Pediátrico Provincial “Mártires de Las Tunas”, con una muestra de 87 pacientes que formaron parte del grupo de estudio, cuyos datos se recolectaron de la consulta médica de gastroenterología en el policlínico de consulta externa de dicha unidad asistencial y 174 en el grupo control, tomados de pacientes que acudieron a la consulta de urología, paralela en tiempo y contigua a la de gastroenterología. A cada grupo se le realizó un interrogatorio y examen físico exhaustivo, que permitió recoger todos los posibles factores de riesgo existentes. Para la determinación de los factores de riesgo se utilizaron los paquetes de programas estadísticos Epinfo versión 6, en el que se realizaron análisis univariados y se evaluó el ODDS RATIO, intervalo de confianza y probabilidad. El procesamiento de los datos se realizó con un 95% de confiabilidad. Los factores de riesgo asociados a la enteropatía parasitaria fueron: pertenecer al sexo masculino, los hábitos higiénicos inadecuados, estado nutricional inadecuado, la ingestión de agua sin hervir y la evacuación de excretas no sanitarias. Se recomienda realizar estudios analíticos para determinar la asociación de otros factores de riesgo, con vistas a establecer programas de intervención en estos pacientes.

  16. Nivel de conocimientos de médicos generales integrales de Las Tunas sobre nutrición humana

    Directory of Open Access Journals (Sweden)

    Eslhey Sánchez Domínguez

    2014-08-01

    Full Text Available La nutrición humana es un instrumento imprescindible a la hora de realizar intervenciones de salud, para ello se requiere de profesionales con un nivel adecuado de conocimientos sobre esta materia. Se realizó un estudio observacional, descriptivo, transversal, en las cuatro áreas de salud del municipio de Las Tunas, en el período comprendido entre septiembre de 2010 y febrero de 2011. El objetivo de la investigación fue caracterizar los niveles de conocimientos sobre nutrición humana que tienen los especialistas y los residentes en medicina general integral. La muestra quedó conformada por 162 profesionales, a los que se les aplicó un cuestionario estructurado en cinco temas. Se realizó el análisis porcentual de los resultados y, de acuerdo al análisis integral del cuestionario, el 56,2% demostró conocimientos en los niveles medio y alto, el resto evidenció insuficiencias significativas (71 profesionales. Por el tipo de pregunta, el 49,4% (80 profesionales reveló dificultades en diferentes aspectos que constituyen generalidades de nutrición humana. En contraste con ello, el 62,3% demostró niveles de conocimientos medios y altos acerca del empleo de la nutrición en la prevención y tratamiento de enfermedades. Por temas, las deficiencias se centraron en: Aspectos generales y Alimentos, con el 51,2 y 58,7%, respectivamente. Se concluye que en los profesionales incluidos en el estudio existió un discreto predominio de los que poseen niveles de conocimientos medios y altos sobre nutrición humana. Las mayores deficiencias cognoscitivas estuvieron al relacionar los nutrientes con los alimentos y en aspectos generales de nutrición, que es necesario tener presente a la hora de promocionar estilos de vida saludables

  17. Efectividad del tratamiento acupuntural en la Parálisis Facial Periférica. Puerto Padre, Las Tunas

    Directory of Open Access Journals (Sweden)

    Dorania Cera Barea

    2015-11-01

    Full Text Available Se realizó un estudio experimental en pacientes mayores de 19 años, con Parálisis Facial Periférica, que fueron atendidos en el Policlínico "Romárico Oro Peña" del municipio de Puerto Padre, provincia de Las Tunas; en el período comprendido entre enero y diciembre del año 2011. La muestra quedó conformada por 40 pacientes que cumplieron con los criterios de inclusión establecidos, a los que se les aplicó el método acupuntural, con el objetivo de evaluar la efectividad del mismo en el tratamiento de esta enfermedad. Los puntos de acupuntura utilizados fueron: Extra 1, 2, 3; Estómago 2, 4, 6, 7; Vaso Concepción 24; Vaso Gobernador 26 y Vesícula Biliar 14. Se aplicó tonificación en el lado sano y dispersión de la energía en el lado de la parálisis. Se recogió la información a través de micro-historias clínicas, donde se incluyeron todas las variables de manera independiente. Los datos se analizaron a través de la estadística descriptiva y el análisis porcentual. Se concluyó que la enfermedad predominó en el sexo femenino y el grupo etáreo de 40 a 49 años; la exposición al frío y/o al calor resultó el factor desencadenante que más incidió; el mayor número de pacientes presentó una evolución clínica favorable; solo se presentaron dos efectos adversos relativos al uso de la acupuntura, demostrando la inocuidad del tratamiento.

  18. Carbonaceous material production from vegetable residue and their use in the removal of textile dyes present in wastewater

    Science.gov (United States)

    Peláez-Cid, A. A.; Tlalpa-Galán, M. A.; Herrera-González, A. M.

    2013-06-01

    This paper presents the adsorption results of acid, basic, direct, vat, and reactive-type dyes on carbonaceous adsorbent materials prepared starting off vegetable residue such as Opuntia ficus indica and Casimiroa edulis fruit wastes. The adsorbents prepared from Opuntia ficus indica waste were designated: TunaAsh, CarTunaT, and CarTunaQ. The materials obtained from Casimiroa edulis waste were named: CenZAP, CarZAPT, and CarZAPQ. TunaAsh and CenZAP consist of ashes obtained at 550 °C CarTunaT and CarZAPT consist of the materials carbonized at 400 °C lastly, CarTunaQ and CarZAPQ consist of chemically activated carbons using H3PO4 at 400 °C. Only the chemically activated materials were washed with distilled water until a neutral pH was obtained after their carbonization. All materials were ground and sieved to obtain a particle size ranging from 0.25 to 0.84 mm. The static adsorption results showed that both ashes and chemically activated carbon are more efficient at dye removal for both vegetable residues. For TunaAsh and CarTunaQ, removal rates of up to 100% in the cases of basic, acid, and direct dyes were achieved. Regarding wastewater containing reactive dyes, the efficiency ranged from 60 to 100%. For vat effluents, it ranged from 42 to 52%. In the case of CenZAP and CarZAPQ, it was possible to treat reactive effluents with rates ranging between 63 and 91%. Regarding vat effluents, it ranged from 57 to 68%. The process of characterization for all materials was done using scanning electron microscopy and infrared spectroscopy.

  19. Carbonaceous material production from vegetable residue and their use in the removal of textile dyes present in wastewater

    International Nuclear Information System (INIS)

    Peláez-Cid, A A; Tlalpa-Galán, M A; Herrera-González, A M

    2013-01-01

    This paper presents the adsorption results of acid, basic, direct, vat, and reactive-type dyes on carbonaceous adsorbent materials prepared starting off vegetable residue such as Opuntia ficus indica and Casimiroa edulis fruit wastes. The adsorbents prepared from Opuntia ficus indica waste were designated: TunaAsh, CarTunaT, and CarTunaQ. The materials obtained from Casimiroa edulis waste were named: CenZAP, CarZAPT, and CarZAPQ. TunaAsh and CenZAP consist of ashes obtained at 550 °C; CarTunaT and CarZAPT consist of the materials carbonized at 400 °C; lastly, CarTunaQ and CarZAPQ consist of chemically activated carbons using H 3 PO 4 at 400 °C. Only the chemically activated materials were washed with distilled water until a neutral pH was obtained after their carbonization. All materials were ground and sieved to obtain a particle size ranging from 0.25 to 0.84 mm. The static adsorption results showed that both ashes and chemically activated carbon are more efficient at dye removal for both vegetable residues. For TunaAsh and CarTunaQ, removal rates of up to 100% in the cases of basic, acid, and direct dyes were achieved. Regarding wastewater containing reactive dyes, the efficiency ranged from 60 to 100%. For vat effluents, it ranged from 42 to 52%. In the case of CenZAP and CarZAPQ, it was possible to treat reactive effluents with rates ranging between 63 and 91%. Regarding vat effluents, it ranged from 57 to 68%. The process of characterization for all materials was done using scanning electron microscopy and infrared spectroscopy.

  20. The specificity of Several Kinds Lipases on n-3 Polyunsaturated Fatty Acids

    Directory of Open Access Journals (Sweden)

    Jenny Elisabeth, T Yuliani, P M Tambunan, J M Purba

    2001-04-01

    Full Text Available Several lipases from microbial and plant, i.e Rhizomucor miehei, Pseudomonas sp., Candida antartica, rice bran, and Carica papaya latex (CPL were examined for synthesis of omega-3 (n-3 PUFA-rich glyceride by hydrolysis and acidolysis reaction. Tuna oil was used in hydrolysis reaction, whereas tuna and palm oils were used as source of triglyceride (TAG molecules and n-3 PUFA concentrate from tuna oil as source of EPA and DHA in acidolysis reaction.For hydrolysis reaction, the rice bran and CPL lipases showed the lowest hydrolytic activity of the tuna oil, whereas the R. miehei lipase showed the highest hydrolytic activity but was unable to hydrolyze EPA and DHA. On the contrary, the C. antartica and Pseudomonas sp. lipases acted stronger on hydrolysis of DHA ester bond than EPA.For acidolysis reaction, all the lipases showed ability to incorporate n-3 PUFA into tuna and palm oils. C. antartica lipase had the maximum DHA incorporation into tuna and palm oils, rice bran lipase had relatively similar ability with R. miehei lipase, and the CPL lipase had the lowest ability. This study proved that rice bran and CPL lipases also had transesterification activity and showed the feasibility of the rice bran lipase to be a biocatalyst for n-3 PUFA-rich glyceride production. Increasing the substrate ratio, of n-3 PUFA concentrate and tuna or palm oil, could increase the EPA and DHA incorporation. The R. miehei, rice bran, and CPL lipases unabled to incorporate DHA into DHA-containing glyceride molecule, whereas C. antartica lipase had the capability in high ratio of n-3 PUFA concentrate to oil. Therefore, the lipases were easier to incorporate n-3 PUFA into palm oil than tuna oil, since the TAG molecules of palm oil was not as complex as tuna oil. It could be suggested that the lipases did not only have acyl chain and positional specificity, but also the whole glyceride structure specificity.

  1. Comportamiento de la polifarmacia en el hogar de ancianos “Carlos Font Pupo”, Las Tunas, 2011

    Directory of Open Access Journals (Sweden)

    Sahily de la Caridad Rojas Pérez

    2015-11-01

    Full Text Available El envejecimiento conlleva a un mayor consumo de fármacos en los ancianos, elevando la probabilidad de ocurrencia de interacciones medicamentosas y reacciones adversas, afectando la calidad de vida de este tipo de paciente. Se realizó un estudio descriptivo de corte transversal para caracterizar la polifarmacia en el Hogar de Ancianos “Carlos Pupo Font”, en Las Tunas, durante el año 2011. El universo estuvo constituido por la totalidad de pacientes institucionalizados y la muestra por 102 ancianos con criterio de selección de consumo de tres o más medicamentos de forma simultánea en el período de estudio. Se caracterizó la edad y sexo de los ancianos, frecuencia de polifarmacia, los grupos farmacológicos implicados, las principales afecciones clínicas y las posibles interacciones medicamentosas por las prescripciones realizadas. La información se obtuvo de la revisión de historias clínicas y fue procesada mediante la estadística descriptiva. El sexo femenino y el grupo de edad entre 75 y 84 años fueron los predominantes. Un 47% de los ancianos consumió cuatro medicamentos simultáneamente. Los antihipertensivos fueron los medicamentos más usados, seguidos por los AINEs. El 72% de la muestra padece afecciones cardiorrespiratorias y el 68% afecciones músculo esqueléticas. Se identificaron posibles interacciones medicamentosas relacionadas con el proceso de absorción, dadas por uniones de ácidos y bases débiles y por interacciones con alimentos, específicamente con la leche. La polimedicación puede ser racionalizada a través de un uso adecuado de los medicamentos, teniendo en cuenta el intervalo de dosificación, las características químicas de los fármacos, la dosis y las características individuales del paciente.

  2. PERANCANGAN PROGRAM APLIKASI PEMBELAJARAN IPA MATERI SISTEM PERNAPASAN BERBASIS MULTIMEDIA UNTUK SISWA SDLB BAGIAN B TUNA RUNGU MENGGUNAKAN OBJECT ORIENTED APPROACH

    Directory of Open Access Journals (Sweden)

    Diana Effendi

    2016-11-01

    Full Text Available Tunarungu, samahalnya dengan difabel yang lain yang merupakan warganegara Indonesia berhak memperoleh pendidikan. Seperti diketahui Anak Berkebutuhan Khusus (ABK membutuhkan perhatian lebih untuk meningkatkan fokus terhadap proses belajar. Saat ini dalam kegiatan belajar mengajar di objek penelitian yaitu SDLB Bagian (B Cidendo Bandung dilakukan secara konvensional, dimana guru menjelaskan materi pelajaran menggunakan buku sebagai alat bantu dalam pengajaran. Keterbatasan media alat bantu yang tepat untuk mengajaranak tuna rungu menjadi masalah bagi para guru untuk mampu menjelaskan materi pelajaran yang dibebankan kepada siswa. Terutama pada mata pelajaran IPA/Sains yang cukup komplek, contohnya materi sistem pernapasan pada manusia dan hewan sangat membutuhkan bantuan alat yang lebih ke arah visual. Untuk mengatasi hal tersebut, dalam penelitian ini dibuatlah rancangan program aplikasi alat bantu pembelajaran IPA/Sains untuk SDLB bagian B khususnya materi sistem pernapasan manusia dan hewan menggunakan metode penelitian Research Development, metode pendekatan berbasis objek (object-oriented approach, dengan alat bantu perancangan menggunakan Unified Modeling Language (UML yaitu Use Case, Sequence Diagram, Class Diagram.Sedangkan model pengembangan sistem menggunakan prototype. Rancangan tersebut meliputi rancangan proses, rancangan user interface program aplikasi yang disesuaikan dengan aplikasi berbasis multimedia. Berdasarkan rancangan tersebut, nantinya diharapkan dapat diimplementasikan menggunakan software Adobe Flash Cs3 Proffesional yang berbasiskan multimedia, dimana dengan multimedia memungkinkan suatu materi yang tidak dapat disampaikan secara verbal atau kejadian, dapat direkayasa sedemikian rupa sehingga bisa disajikan dengan terperinci dan sangat menarik bagi siswa. Kata kunci: anak berkebutuhan khusus (ABK, tunarungu, IPA/sains, sistem pernapasan manusia dan hewan.

  3. Identification of factors influencing shark catch and mortality in the Marshall Islands tuna longline fishery and management implications.

    Science.gov (United States)

    Bromhead, D; Clarke, S; Hoyle, S; Muller, B; Sharples, P; Harley, S

    2012-04-01

    Recent average annual catches of sharks by tuna longline vessels fishing in the Republic of the Marshall Islands (RMI) are estimated to be between 1583 and 2274 t. Although 22 shark species have been recorded by the observer programme for this fishery, 80% of the annual catch comprises only five species: blue shark Prionace glauca, silky shark Carcharhinus falciformis, bigeye thresher shark Alopias superciliosus, pelagic thresher shark Alopias pelagicus and oceanic whitetip shark Carcharhinus longimanus. Wire leaders (i.e. branch lines or traces) were also used by nearly all observed vessels. Generalized additive model (GAM)-based analyses of catch rates indicated that P. glauca and A. superciliosus are caught in higher numbers when vessels fish in relatively cooler waters, at night, close to the full moon, when the 27° C thermocline is close to the surface and during El Niño conditions. In contrast, C. falciformis, A. pelagicus and C. longimanus are caught in higher numbers when shark lines are used (all three species) or hooks are set at a shallow depth (A. pelagicus and C. longimanus and, also, P. glauca). These findings are generally consistent with current knowledge of these species' habitat preferences, movement and distribution. The results of these analyses were combined with information pertaining to shark condition and fate upon capture to compare the likely effectiveness of a range of potential measures for reducing shark mortality in the longline fishery. Of the options considered, the most effective would be to combine measures that reduce the catch rate (e.g. restrictions on the use of wire leaders, shark baits and shark lines) with measures that increase survival rates after post-capture release (e.g. finning bans). © 2012 Secrtariat of the Pacific Community. Journal of Fish Biology © 2012 The Fisheries Society of the British Isles.

  4. An individual-based model of skipjack tuna (Katsuwonus pelamis) movement in the tropical Pacific ocean

    Science.gov (United States)

    Scutt Phillips, Joe; Sen Gupta, Alex; Senina, Inna; van Sebille, Erik; Lange, Michael; Lehodey, Patrick; Hampton, John; Nicol, Simon

    2018-05-01

    The distribution of marine species is often modeled using Eulerian approaches, in which changes to population density or abundance are calculated at fixed locations in space. Conversely, Lagrangian, or individual-based, models simulate the movement of individual particles moving in continuous space, with broader-scale patterns such as distribution being an emergent property of many, potentially adaptive, individuals. These models offer advantages in examining dynamics across spatiotemporal scales and making comparisons with observations from individual-scale data. Here, we introduce and describe such a model, the Individual-based Kinesis, Advection and Movement of Ocean ANimAls model (Ikamoana), which we use to replicate the movement processes of an existing Eulerian model for marine predators (the Spatial Ecosystem and Population Dynamics Model, SEAPODYM). Ikamoana simulates the movement of either individual or groups of animals by physical ocean currents, habitat-dependent stochastic movements (kinesis), and taxis movements representing active searching behaviours. Applying our model to Pacific skipjack tuna (Katsuwonus pelamis), we show that it accurately replicates the evolution of density distribution simulated by SEAPODYM with low time-mean error and a spatial correlation of density that exceeds 0.96 at all times. We demonstrate how the Lagrangian approach permits easy tracking of individuals' trajectories for examining connectivity between different regions, and show how the model can provide independent estimates of transfer rates between commonly used assessment regions. In particular, we find that retention rates in most assessment regions are considerably smaller (up to a factor of 2) than those estimated by this population of skipjack's primary assessment model. Moreover, these rates are sensitive to ocean state (e.g. El Nino vs La Nina) and so assuming fixed transfer rates between regions may lead to spurious stock estimates. A novel feature of the

  5. How many fish in a tank? Constructing an automated fish counting system by using PTV analysis

    Science.gov (United States)

    Abe, S.; Takagi, T.; Takehara, K.; Kimura, N.; Hiraishi, T.; Komeyama, K.; Torisawa, S.; Asaumi, S.

    2017-02-01

    Because escape from a net cage and mortality are constant problems in fish farming, health control and management of facilities are important in aquaculture. In particular, the development of an accurate fish counting system has been strongly desired for the Pacific Bluefin tuna farming industry owing to the high market value of these fish. The current fish counting method, which involves human counting, results in poor accuracy; moreover, the method is cumbersome because the aquaculture net cage is so large that fish can only be counted when they move to another net cage. Therefore, we have developed an automated fish counting system by applying particle tracking velocimetry (PTV) analysis to a shoal of swimming fish inside a net cage. In essence, we treated the swimming fish as tracer particles and estimated the number of fish by analyzing the corresponding motion vectors. The proposed fish counting system comprises two main components: image processing and motion analysis, where the image-processing component abstracts the foreground and the motion analysis component traces the individual's motion. In this study, we developed a Region Extraction and Centroid Computation (RECC) method and a Kalman filter and Chi-square (KC) test for the two main components. To evaluate the efficiency of our method, we constructed a closed system, placed an underwater video camera with a spherical curved lens at the bottom of the tank, and recorded a 360° view of a swimming school of Japanese rice fish (Oryzias latipes). Our study showed that almost all fish could be abstracted by the RECC method and the motion vectors could be calculated by the KC test. The recognition rate was approximately 90% when more than 180 individuals were observed within the frame of the video camera. These results suggest that the presented method has potential application as a fish counting system for industrial aquaculture.

  6. THE ENVIRONMENTAL IMPACTS OF MARINE FISH CAGE FARMS IN THE EASTERN ADRIATIC

    Directory of Open Access Journals (Sweden)

    Ivan Katavić

    2003-12-01

    Full Text Available Mariculture in Croatia could play a more important role in development of rural communities along coastline. However, by increase of fish farming, public concern over environmental issues has been raised, and the need for more responsible mariculture development and management has been asked. There are opportunities and challenges for effectively integrating mariculture into coastal zone management with equal rights and obligations. This is primarily because of its social and economic mission consisting in preventing de-population of rural coastal areas and islands and meeting the growing needs of tourist market for seafood. Although intensive mariculture production is accused of producing negative environmental effects, many of these effects still need to be scientifically documented. The effect of nitrogen and phosphorous releases from farmed fish faeces or uneaten food is not of significant issues for marine ecosystem, and it is generally of little importance compared to the inflow of nutrients from other coastal sources. The impact on sediment and benthic communities is mainly local and short-term ones, and depends on the number and extent of the farms and their location. Recovery of some benthic communities after the cessation of farming activities may be delayed over several years (i. e. Posidonia beds due to the accumulated organic matter. Bluefin tuna farming if not properly located and managed might cause pollution problems, either from uneaten feed and metabolic waste or from harvesting and processing the fish. In most cases the problem comes from smell pollution during the summer time and the oily water surface that may be widespread much outside of the farm areas. It will be important for sustainable development of Croatian mariculture to offer a healthy and good quality product in the quantities required by the market, while not degrading the marine environment.

  7. Inferring the nature of anthropogenic threats from long-term abundance records.

    Science.gov (United States)

    Shoemaker, Kevin T; Akçakaya, H Resit

    2015-02-01

    Diagnosing the processes that threaten species persistence is critical for recovery planning and risk forecasting. Dominant threats are typically inferred by experts on the basis of a patchwork of informal methods. Transparent, quantitative diagnostic tools would contribute much-needed consistency, objectivity, and rigor to the process of diagnosing anthropogenic threats. Long-term census records, available for an increasingly large and diverse set of taxa, may exhibit characteristic signatures of specific threatening processes and thereby provide information for threat diagnosis. We developed a flexible Bayesian framework for diagnosing threats on the basis of long-term census records and diverse ancillary sources of information. We tested this framework with simulated data from artificial populations subjected to varying degrees of exploitation and habitat loss and several real-world abundance time series for which threatening processes are relatively well understood: bluefin tuna (Thunnus maccoyii) and Atlantic cod (Gadus morhua) (exploitation) and Red Grouse (Lagopus lagopus scotica) and Eurasian Skylark (Alauda arvensis) (habitat loss). Our method correctly identified the process driving population decline for over 90% of time series simulated under moderate to severe threat scenarios. Successful identification of threats approached 100% for severe exploitation and habitat loss scenarios. Our method identified threats less successfully when threatening processes were weak and when populations were simultaneously affected by multiple threats. Our method selected the presumed true threat model for all real-world case studies, although results were somewhat ambiguous in the case of the Eurasian Skylark. In the latter case, incorporation of an ancillary source of information (records of land-use change) increased the weight assigned to the presumed true model from 70% to 92%, illustrating the value of the proposed framework in bringing diverse sources of

  8. Cultural Robotics: The Culture of Robotics and Robotics in Culture

    Directory of Open Access Journals (Sweden)

    Hooman Samani

    2013-12-01

    Full Text Available In this paper, we have investigated the concept of “Cultural Robotics” with regard to the evolution of social into cultural robots in the 21st Century. By defining the concept of culture, the potential development of a culture between humans and robots is explored. Based on the cultural values of the robotics developers, and the learning ability of current robots, cultural attributes in this regard are in the process of being formed, which would define the new concept of cultural robotics. According to the importance of the embodiment of robots in the sense of presence, the influence of robots in communication culture is anticipated. The sustainability of robotics culture based on diversity for cultural communities for various acceptance modalities is explored in order to anticipate the creation of different attributes of culture between robots and humans in the future.

  9. Cultural Robotics: The Culture of Robotics and Robotics in Culture

    OpenAIRE

    Hooman Samani; Elham Saadatian; Natalie Pang; Doros Polydorou; Owen Noel Newton Fernando; Ryohei Nakatsu; Jeffrey Tzu Kwan Valino Koh

    2013-01-01

    In this paper, we have investigated the concept of “Cultural Robotics” with regard to the evolution of social into cultural robots in the 21st Century. By defining the concept of culture, the potential development of a culture between humans and robots is explored. Based on the cultural values of the robotics developers, and the learning ability of current robots, cultural attributes in this regard are in the process of being formed, which would define the new concept of cultural robotics. Ac...

  10. Accounting for age uncertainty in growth modeling, the case study of yellowfin tuna (Thunnus albacares of the Indian Ocean.

    Directory of Open Access Journals (Sweden)

    Emmanuelle Dortel

    Full Text Available Age estimates, typically determined by counting periodic growth increments in calcified structures of vertebrates, are the basis of population dynamics models used for managing exploited or threatened species. In fisheries research, the use of otolith growth rings as an indicator of fish age has increased considerably in recent decades. However, otolith readings include various sources of uncertainty. Current ageing methods, which converts an average count of rings into age, only provide periodic age estimates in which the range of uncertainty is fully ignored. In this study, we describe a hierarchical model for estimating individual ages from repeated otolith readings. The model was developed within a Bayesian framework to explicitly represent the sources of uncertainty associated with age estimation, to allow for individual variations and to include knowledge on parameters from expertise. The performance of the proposed model was examined through simulations, and then it was coupled to a two-stanza somatic growth model to evaluate the impact of the age estimation method on the age composition of commercial fisheries catches. We illustrate our approach using the sagittal otoliths of yellowfin tuna of the Indian Ocean collected through large-scale mark-recapture experiments. The simulation performance suggested that the ageing error model was able to estimate the ageing biases and provide accurate age estimates, regardless of the age of the fish. Coupled with the growth model, this approach appeared suitable for modeling the growth of Indian Ocean yellowfin and is consistent with findings of previous studies. The simulations showed that the choice of the ageing method can strongly affect growth estimates with subsequent implications for age-structured data used as inputs for population models. Finally, our modeling approach revealed particularly useful to reflect uncertainty around age estimates into the process of growth estimation and it can

  11. Safeguards Culture: Analogies from Safety Culture and Security Culture

    International Nuclear Information System (INIS)

    Naito, K.

    2013-01-01

    The terminology of 'safeguards culture' has been used loosely by safeguards experts as an essential element for establishing an organizational environment of stakeholders for the effective and efficient implementation of international safeguards. However, unlike the other two triplet brothers/ sisters of 3S's (Safety, Security, Safeguards), there is no formally established definition of safeguards culture. In the case of safety culture, INSAG (the International Nuclear Safety Advisory Group) has extensively dealt with its concept, elaborating its definition and key characteristics, and published its report, INSAG-4, as the IAEA Safety Series 75. On the other hand, security culture has also been defined by AdSec (the Advisory Group on Nuclear Security). In this paper, a provisional definition of safeguards culture is made on the analogies of safety culture and security culture, and an effort is made to describe essential elements of safeguards culture. It is proposed for SAGSI (the Standing Advisory Group on Safeguards Implementation) to formally consider the definition of safeguards culture and its characteristics. The paper is followed by the slides of the presentation. (author)

  12. The Food and Agriculture Organization, in its Reykjavik Declaration ...

    African Journals Online (AJOL)

    2005-06-06

    Jun 6, 2005 ... information on the geographical distribution of marine species to improve .... snoek, albacore, bigeye tuna, yellowfin tuna, shallow- water Cape hake Merluccius capensis and deep- ..... raw data processing by MCM. Because ...

  13. Low genetic variation suggest single stock of Kawakawa Euthynnus affinis (Cantor, 1849) along the Indian coast

    Digital Repository Service at National Institute of Oceanography (India)

    GirishKumar; Kunal, S.P.; Menezes, M.R.

    Kawakawa Euthynnus affinis is an epipelagic migratory tuna species, widely distributed in the tropical and subtropical waters of the Indo-Pacific region. It constitutes the largest tuna fishery in Indian waters. In present study, restriction...

  14. Skipjack tuna (Katsuwonus pelamis) eyeball oil exerts an anti-inflammatory effect by inhibiting NF-κB and MAPK activation in LPS-induced RAW 264.7 cells and croton oil-treated mice.

    Science.gov (United States)

    Jeong, Da-Hyun; Kim, Koth-Bong-Woo-Ri; Kim, Min-Ji; Kang, Bo-Kyeong; Ahn, Dong-Hyun

    2016-11-01

    The effect of tuna eyeball oil (TEO) on lipopolysaccharide (LPS)-induced inflammation in macrophage cells was investigated. TEO had no cytotoxicity in cell viability as compared to the control in LPS induced RAW 264.7 cells. TEO reduced the levels of NO and pro-inflammatory cytokines by up to 50% in a dose-dependent manner. The expression of NF-κB and MAPKs as well as iNOS and COX-2 proteins was reduced by TEO, which suggests that its anti-inflammatory activity is related to the suppression of the NF-κB and MAPK signaling pathways. The rate of formation of ear edema was reduced compared to that in the control at the highest dose tested. In an acute toxicity test, no mice were killed by TEO doses of up to 5000mg/kg body weight during the two week observation period. These results suggested that TEO may have a significant effect on inflammatory factors and be a potential anti-inflammatory therapeutic. Copyright © 2016 Elsevier B.V. All rights reserved.

  15. COMPETENCIA CULTURAL E INTELIGENCIA CULTURAL. APORTES A LA MEDIACIÓN CULTURAL DOCENTE CULTURAL (COMPETENCE AND CULTURAL INTELLIGENCE. CONTRIBUTIONS TO CULTURAL MEDIATION FOR TEACHERS

    Directory of Open Access Journals (Sweden)

    D'Antoni Maurizia

    2011-08-01

    Full Text Available Resumen:El ensayo nace como parte de una investigación mayor que se publicará sobre la inserción profesional docente en la Universidad de Costa Rica. Su finalidad en la investigación en curso es la de explorar los aportes de los estudios sobre competencia cultural e inteligencia cultural, para identificar planteamientos teóricos que fortalezcan nuevos espacios para la mediación cultural docente en la Universidad. Se concluye que el concepto de competencia cultural representa un aporte importante, si se revisa la idea de cultura que subyace y se le transforma en “competencia intercultural”. Luego, se define mediación cultural, evidenciándose la importancia de la nueva figura profesional en el contexto actual, los ámbitos de acción donde se ha empleado y se manifiesta la necesidad de promover mediadores y mediadoras culturales en Costa Rica también.Abstract: The essay comes as part of a larger investigation to be published about teachers’ professional integration at the University of Costa Rica. His purpose in the ongoing investigation is to explore the contributions of studies on cultural competency and cultural understanding, to identify new theoretical approaches and strengthen new cultural spaces for teaching mediation at the University. We conclude that the concept of cultural competence represents an important contribution, if we review the underlying idea of culture and it is transformed into "intercultural competence". The definition of cultural mediation points to the importance of the new professional figure in the current context, evidencing the areas of action where it has been used and showing the need to promote cultural mediators in Costa Rica as well.

  16. Assessment of human health risk associated with methylmercury in the imported fish marketed in the Caribbean.

    Science.gov (United States)

    Fuentes-Gandara, Fabio; Herrera-Herrera, Claudia; Pinedo-Hernández, José; Marrugo-Negrete, José; Díez, Sergi

    2018-08-01

    The decline in marine and freshwaters catches in recent years in Colombia has led to a change in dietary habits, with an increase in the purchase and consumption of imported fish. This is of particular concern as fish are sometimes caught in mercury-contaminated waters, and are subsequently sold canned or uncanned. In addition, canned tuna has received little attention as it is widely assumed that concentrations are low. In this study, total mercury (THg) and methylmercury (MeHg) concentrations were evaluated in three imported fish species marketed in Colombia, Prochilodus lineatus, Prochilodus reticulatus, and Pangasianodon hypophthalmus, plus four brands of canned tuna and one of sardines. One brand of tuna showed the highest mean concentrations of THg (0.543 ± 0.237 μg/g, wet weight, ww) and MeHg (0.518 ± 0.337 μg/g ww), while concentrations in P. hypophthalmus were approximately 30 times lower (≈0.02 µg/g ww). The estimated weekly intake (EWI) in children was above the provisional tolerable weekly intake (PTWI) of MeHg established by the Joint FAO/World Health Organization (WHO) Expert Committee on Food Additives (JECFA) in 2007, 1.6 μg/kg body weight (bw) per week, for all the canned tuna brands. Values for adults were below PTWI, whereas for women of childbearing age, values were above PTWI only for brand D of canned tuna. The estimate of the potential risk indicated that MeHg levels in canned tuna can generate negative effects in vulnerable groups, while the EWI of fresh fish did not pose a threat to the general population. Therefore, establishing strategies to address the high consumption of canned tuna, and continuous monitoring to control commercial food, are recommended to decrease Hg exposure. Copyright © 2018 Elsevier Inc. All rights reserved.

  17. ORGANIZATIONAL CULTURE AND MANAGEMENT CULTURE

    OpenAIRE

    Tudor Hobeanu; Loredana Vacarescu Hobeanu

    2010-01-01

    Communication reveals the importance of organizational culture and management culture supported by the remarkable results in economic and social level of organization. Their functions are presented and specific ways of expression levels of organizational culture and ways of adapting to the requirements of the organization's management culture.

  18. Cultural commons and cultural evolution

    OpenAIRE

    Bravo, Giangiacomo

    2010-01-01

    Culture evolves following a process that is akin to biological evolution, although with some significant differences. At the same time culture has often a collective good value for human groups. This paper studies culture in an evolutionary perspective, with a focus on the implications of group definition for the coexistence of different cultures. A model of cultural evolution is presented where agents interacts in an artificial environment. The belonging to a specific memetic group is a majo...

  19. Impacto de la mastoplastia reductiva con técnicas de mínima incisión. Las Tunas, 2008-2010

    Directory of Open Access Journals (Sweden)

    Oliver Alain Dieppa Ramírez

    2015-12-01

    Full Text Available Se realizó un estudio experimental, con el objetivo de evaluar la utilidad de la Mastoplastia reductiva con técnicas de mínima incisión, en el Servicio de Cirugía Plástica del Hospital Provincial Docente “Dr. Ernesto Guevara de la Serna” de la ciudad de Las Tunas; en el periodo comprendido de abril de 2008 a marzo de 2010. El universo estuvo constituido por las 281 pacientes con diagnóstico de hipertrofia mamaria, acompañada o no de ptosis mamaria, y la muestra quedó constituida por las 136 pacientes con diagnóstico de hipertrofia mamaria, grado I, II o III, con criterio quirúrgico estético y/o funcional, las cuales tributaban a la realización de la cirugía con técnicas de mínima incisión durante el período de estudio. Para lograr los objetivos, los datos fueron recogidos de fuentes primarias y secundarias a través del interrogatorio directo, examen físico y de la historia clínica de cada paciente. Todos fueron procesados utilizando la estadística descriptiva mediante el análisis porcentual. Los principales resultados mostraron un predominio del grupo de 23 a 35 años de edad, el tipo de deformidad más operada fue la hipertrofia mamaria moderada, asimismo el tipo de anestesia más usada fue la local. A pesar de ser la dehiscencia de la herida quirúrgica la más frecuente complicación, las operadas se mostraron altamente satisfechas de acuerdo al tamaño, forma, simetría y sensibilidad; siendo la reducción de la cicatriz resultante el parámetro de mayor impacto.

  20. Culture-lovers and Culture-leavers

    NARCIS (Netherlands)

    Frank Huysmans; Andries van den Broek; Jos de Haan

    2005-01-01

    Who are the people in the Netherlands with an active interest in cultural heritage and the performing arts, and who prefer to leave these forms of culture alone? Have the size and composition of the groups of 'culture-lovers' and 'culture-leavers' changed since the end of the 1970s? These are the

  1. Toetuseta jäämine šokeeris mainekat kultuuriajakirja / Ott Raun, Laine Jänes ; interv. Rebekka Lotman ; komment. Marek Tamm

    Index Scriptorium Estoniae

    Raun, Ott, 1940-

    2009-01-01

    Eesti Kultuurkapitalinõukogu otsusel jääb ajalookultuuri ajakiri "Tuna" alates 2009. aastast püsitoetusest ilma. Sellega seotud küsimustele vastavad "Tuna" peatoimetaja Ott Raun ja Eesti Kultuurkapitali nõukogu esimees Laine Jänes, kommenteerinud ajaloolane Marek Tamm

  2. Neurotoxic, cytotoxic, apoptotic and antiproliferative effects of some marine algae extracts on the NA2B cell line.

    Science.gov (United States)

    Kurt, O; Özdal-Kurt, F; Akçora, C M; Özkut, M; Tuğlu, M I

    2018-02-01

    Oxidative stress contributes to cancer pathologies and to apoptosis. Marine algae exhibit cytotoxic, antiproliferative and apoptotic effects; their metabolites have been used to treat many types of cancer. We investigated in culture extracts of Petalonia fascia, Jania longifurca and Halimeda tuna to determine their effects on mouse neuroblastoma cell line, NA2B. NA2B cells were treated with algae extracts, and the survival and proliferation of NA2B cells were assessed using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. The effects of algae extracts on oxidative stress in NA2B cells also were investigated using nitric oxide synthase (NOS) immunocytochemistry and apoptosis was assessed using terminal deoxynucleotidyl transferase dUTP nick end labeling. We observed significant neurite inhibition with moderate damage by the neurotoxicity-screening test (NST) at IC 50 dilutions of the extracts. MTT demonstrated that J. longifurca extracts were more toxic than P. fascia and H. tuna extracts. We found an increase of endothelial and inducible NOS immunostaining for oxidative stress and TUNEL analysis revealed increased apoptosis after application of extract. Our findings suggest that the algae we tested may have potential use for treatment of cancer.

  3. Cultural Humility and Hospital Safety Culture.

    Science.gov (United States)

    Hook, Joshua N; Boan, David; Davis, Don E; Aten, Jamie D; Ruiz, John M; Maryon, Thomas

    2016-12-01

    Hospital safety culture is an integral part of providing high quality care for patients, as well as promoting a safe and healthy environment for healthcare workers. In this article, we explore the extent to which cultural humility, which involves openness to cultural diverse individuals and groups, is related to hospital safety culture. A sample of 2011 hospital employees from four hospitals completed measures of organizational cultural humility and hospital safety culture. Higher perceptions of organizational cultural humility were associated with higher levels of general perceptions of hospital safety, as well as more positive ratings on non-punitive response to error (i.e., mistakes of staff are not held against them), handoffs and transitions, and organizational learning. The cultural humility of one's organization may be an important factor to help improve hospital safety culture. We conclude by discussing potential directions for future research.

  4. What is culture in «cultural economy»? Defining culture to create measurable models in cultural economy

    Directory of Open Access Journals (Sweden)

    Aníbal Monasterio Astobiza

    2017-07-01

    Full Text Available The idea of culture is somewhat vague and ambiguous for the formal goals of economics. The aim of this paper is to define the notion of culture better so as to help build economic explanations based on culture and therefore to measure its impact in every activity or beliefs associated with culture. To define culture according to the canonical evolutionary definition, it is any kind of ritualised behaviour that becomes meaningful for a group and that remains more or less constant and is transmitted down through the generations. Economic institutions are founded, implicitly or explicitly, on a worldview of how humans function; culture is an essential part of understanding us as humans, making it necessary to describe what we understand by culture correctly. In this paper we review the literature on evolutionary anthropology and psychology dealing with the concept of culture to warn that economic modelling ignores intangible benefits of culture rendering economics unable to measure certain cultural items in the digital consumer society.

  5. FROM CULTURAL IMPOTENCE TO CULTURAL AMPUTATION

    Directory of Open Access Journals (Sweden)

    Sukhanov Vyacheslav Vladimirovich

    2013-02-01

    Full Text Available Cultural space of any state is formed by a population that is within its borders. In this article, the author introduces a new cultural definitions «cultural impotence» and «cultural amputation», justifying their use, both in terms of population of the Russian Federation and the European Union and America. The article analyzes the state of society and the cultural factors that influence the development of society in Russia, there are options to bring the country out of a deep cultural crisis. Also established a close relationship between the domestic policy of the state and development of culture.

  6. Large-Scale Examination of Spatio-Temporal Patterns of Drifting Fish Aggregating Devices (dFADs) from Tropical Tuna Fisheries of the Indian and Atlantic Oceans.

    Science.gov (United States)

    Maufroy, Alexandra; Chassot, Emmanuel; Joo, Rocío; Kaplan, David Michael

    2015-01-01

    Since the 1990s, massive use of drifting Fish Aggregating Devices (dFADs) to aggregate tropical tunas has strongly modified global purse-seine fisheries. For the first time, a large data set of GPS positions from buoys deployed by French purse-seiners to monitor dFADs is analysed to provide information on spatio-temporal patterns of dFAD use in the Atlantic and Indian Oceans during 2007-2011. First, we select among four classification methods the model that best separates "at sea" from "on board" buoy positions. A random forest model had the best performance, both in terms of the rate of false "at sea" predictions and the amount of over-segmentation of "at sea" trajectories (i.e., artificial division of trajectories into multiple, shorter pieces due to misclassification). Performance is improved via post-processing removing unrealistically short "at sea" trajectories. Results derived from the selected model enable us to identify the main areas and seasons of dFAD deployment and the spatial extent of their drift. We find that dFADs drift at sea on average for 39.5 days, with time at sea being shorter and distance travelled longer in the Indian than in the Atlantic Ocean. 9.9% of all trajectories end with a beaching event, suggesting that 1,500-2,000 may be lost onshore each year, potentially impacting sensitive habitat areas, such as the coral reefs of the Maldives, the Chagos Archipelago, and the Seychelles.

  7. Large-Scale Examination of Spatio-Temporal Patterns of Drifting Fish Aggregating Devices (dFADs from Tropical Tuna Fisheries of the Indian and Atlantic Oceans.

    Directory of Open Access Journals (Sweden)

    Alexandra Maufroy

    Full Text Available Since the 1990s, massive use of drifting Fish Aggregating Devices (dFADs to aggregate tropical tunas has strongly modified global purse-seine fisheries. For the first time, a large data set of GPS positions from buoys deployed by French purse-seiners to monitor dFADs is analysed to provide information on spatio-temporal patterns of dFAD use in the Atlantic and Indian Oceans during 2007-2011. First, we select among four classification methods the model that best separates "at sea" from "on board" buoy positions. A random forest model had the best performance, both in terms of the rate of false "at sea" predictions and the amount of over-segmentation of "at sea" trajectories (i.e., artificial division of trajectories into multiple, shorter pieces due to misclassification. Performance is improved via post-processing removing unrealistically short "at sea" trajectories. Results derived from the selected model enable us to identify the main areas and seasons of dFAD deployment and the spatial extent of their drift. We find that dFADs drift at sea on average for 39.5 days, with time at sea being shorter and distance travelled longer in the Indian than in the Atlantic Ocean. 9.9% of all trajectories end with a beaching event, suggesting that 1,500-2,000 may be lost onshore each year, potentially impacting sensitive habitat areas, such as the coral reefs of the Maldives, the Chagos Archipelago, and the Seychelles.

  8. FROM CULTURAL IMPOTENCE TO CULTURAL AMPUTATION

    Directory of Open Access Journals (Sweden)

    Вячеслав Владимирович Суханов

    2013-04-01

    Full Text Available Cultural space of any state is formed by a population that is within its borders. In this article, the author introduces a new cultural definitions «cultural impotence» and «cultural amputation», justifying their use, both in terms of population of the Russian Federation and the European Union and America. The article analyzes the state of society and the cultural factors that influence the development of society in Russia, there are options to bring the country out of a deep cultural crisis. Also established a close relationship between the domestic policy of the state and development of culture.DOI: http://dx.doi.org/10.12731/2218-7405-2013-2-1

  9. Japanese Shame Culture and American Guilt Culture

    Institute of Scientific and Technical Information of China (English)

    Lu Weijie

    2016-01-01

    Culture is an important factor contributing to the success of intercultural communication. In the east and west, there are many different cultures, among which Japanese shame culture and American guilt culture are two typical ones. Influenced by different cultures, these two countries have different characteristics, which reminds us that in intercultural communication culture should be paid much attention to.

  10. Eating during Pregnancy

    Science.gov (United States)

    ... to Avoid While Pregnant No level of alcohol consumption is considered safe during pregnancy. Also, check with your doctor before you take ... than canned light tuna, the U.S. Food and Drug Administration (FDA) ... tuna consumption is limited. It can be confusing when recommendations ...

  11. The Role of Culture Theory in Cross-Cultural Training: A Multimethod Study of Culture-Specific, Culture-General, and Culture Theory-Based Assimilators.

    Science.gov (United States)

    Bhawuk, Dharm P. S.

    1998-01-01

    In a multimethod evaluation of cross-cultural training tools involving 102 exchange students at a midwestern university, a theory-based individualism and collectivism assimilator tool had significant advantages over culture-specific and culture-general assimilators and a control condition. Results support theory-based culture assimilators. (SLD)

  12. Cultural Analysis - towards cross-cultural understanding

    DEFF Research Database (Denmark)

    Gullestrup, Hans

    The book considers intercultural understanding and co-action, partly by means of general insight into concept of culture and the dimensions which bring about cultural differences, and partly as a methodology to analyse a certain culture - whether one's own or others'. This leads towards an unders......The book considers intercultural understanding and co-action, partly by means of general insight into concept of culture and the dimensions which bring about cultural differences, and partly as a methodology to analyse a certain culture - whether one's own or others'. This leads towards...... a theoretical/abstract proposal for cultural understanding. The second part presents a theoretical/abstract proposal for under-standing intercultural plurality and complexity. The third part provides an empirical model for the analysis of intercultural co-action. Finally, the fourth part present and discusses...

  13. Hispanic Culture and Relational Cultural Theory

    Science.gov (United States)

    Ruiz, Elizabeth

    2005-01-01

    Traditional personality theories do not consider the impact of culture on personality development. Yet, to provide culturally relevant services to the increasing Hispanic population in the U.S., more culturally relevant theories must be identified. This paper presents Relational Cultural Theory (RCT) as an alternative model to understanding…

  14. Cultural Competence and the Operational Commander: Moving Beyond Cultural Awareness into Culture-Centric Warfare

    National Research Council Canada - National Science Library

    Karcanes, James A

    2007-01-01

    .... Understanding the different levels of cultural awareness -- cultural consideration, cultural understanding, and cultural competence -- will help usher in a new focus on culture-centric warfare...

  15. Determination of cadmium, lead and mercury residual levels in meat ...

    African Journals Online (AJOL)

    Determination of cadmium, lead and mercury residual levels in meat of canned light tuna ( Katsuwonus pelamis and Thunnus albacares ) and fresh little tunny ( Euthynnus alletteratus ) in Libya. ... Surveillance for mercury (Hg), lead (Pb) and cadmium (Cd) contamination in tuna products is crucial for consumer food safety.

  16. Aplicación de la psicoterapia sistémica en la atención primaria de salud. Municipio de Las Tunas

    Directory of Open Access Journals (Sweden)

    Emilio Lastre Arrieta

    2015-11-01

    Full Text Available Se realizó un estudio de intervención con un grupo de pacientes neuróticos en tratamiento ambulatorio, del municipio de Las Tunas, donde se empleó como modalidad terapéutica la Psicoterapia Sistémica de Modificación de Predisposiciones, con el objetivo de modificar las actitudes y los síntomas básicos. En la consulta externa de psiquiatría se seleccionaron a los pacientes que integrarían el grupo de psicoterapia, entre los meses de octubre a diciembre del año 2009, con las características de tener un coeficiente intelectual normal, que no presentaran síntomas obsesivos, ni organicidad cerebral. El grupo de trabajo estuvo formado por psiquiatras, un psicólogo clínico, psicometristas y una enfermera psiquiátrica. A todos los pacientes se les realizó una entrevista, con los objetivos de selección y diagnóstico, se les llenó una encuesta teniendo en cuenta los objetivos propuestos y se les indicaron pruebas psicológicas. El grupo se reunió con una frecuencia semanal, empleando un tiempo de hora y media, durante seis meses, de enero a junio de 2010. Se logró la modificación de los síntomas básicos en los pacientes del estudio con esta forma de psicoterapia, valorando también la modificación de actitudes en relación a las problemáticas fundamentales. Se recomienda el tratamiento en este medio, teniendo en cuenta sus características y lo que se quiere lograr, donde los enfermeros y técnicos de salud tengan un papel activo y que además de la modificación sintomática, se mejore la forma de actuar en la vida ante situaciones de conflicto.

  17. Aspectos clínicos y endoscópicos del adenocarcinoma gástrico en pacientes de Las Tunas, enero de 2013 a enero de 2014

    Directory of Open Access Journals (Sweden)

    Liem Fonseca Chong

    2014-08-01

    Full Text Available Se realizó un estudio descriptivo de corte transversal, con el objetivo de caracterizar los pacientes atendidos por adenocarcinoma gástrico en el Hospital General Docente “Dr. Ernesto Guevara de la Serna” de provincia de Las Tunas, durante el periodo comprendido entre el 1 de enero de 2013 y el 1 de enero de 2014. El universo quedó constituido por todos los pacientes a los que se les realizó biopsia de estómago, por lesión sospechosa de adenocarcinoma gástrico, y la muestra por todos los pacientes con diagnóstico histológico de esta enfermedad. Para la obtención de los datos primarios se revisaron los expedientes clínicos de 23 pacientes con biopsia positiva. A partir de un cuestionario se recogieron y procesaron los datos y se interpretaron los resultados. Se encontró un predominio en el sexo masculino (69,5%, en los mayores de 51 años (30,4% y en la población de raza negra (47,8% con antecedentes de infección por helicobacter pylori (69,5%. El 43,4% de los pacientes debutó con una dispepsia prolongada, como síntoma predominante, y la imagen endoscópica más observada fue la úlcera cancerosa (12 casos, en relación con el patrón histológico difuso

  18. PENELITIAN TENTANG CARA PENGOLAHAN IKAN LAUT (TONGKOL DAN KEMBUNG YANG AMAN UNTUK KESEHATAN

    Directory of Open Access Journals (Sweden)

    Supraptini Supraptini

    2012-09-01

    Full Text Available Incidence of food poisoning are still happening. Result of a study as reported by the Directorate General of Communicable Disease Control, Ministry of Health, indicated that the poisoning are frequently caused by sea fish especially tuna fish (Auxis thazard. That's why Health Ecology Research Centre has done another research to find a safe way how to cook sea fish especially tuna fish for safe consumption. This research was conducted from June 1997 until March 1998. The samples consisted of tuna fish (Auxis thazard and kembung fish (Rastrelliger spp bought from Fish Auction in Cilincing and Cilincing market. The fishes were carried in an ice box to be analized in the laboratory and prepared in different cooking methods: fresh steamedfish, fish cooked in coconut milk, fried fish and grilled fish. Measurement of histamine levels were done by the Mopper Method and observation of microflora for fungi and bacteria, to know wich way of cooking fish was related to the lowest histamine level. By analizing histamine level it was found that fresh steamed fish contained the lowest histamine (tuna 6,34 ppm, kembung 3,91 ppm,fish cooked in coconut milk (tuna 8,11 ppm, kembung 5,20 ppm, fried fish (tuna 14,86 ppm, kembung 13,18 ppm and grilled fish (tuna 31,12 ppm, kembung 19,49 ppm. It has been proven that the histamine level of cooked fresh fish is less than 50 ppm (US Food and Drug Administration/FDAs, allowable concentration. The conclusion of this research : to cook fresh fish is the best and that fish must be handled carefully. The rotary histamin content was lowest in fresh steamed fish, followed by fish cooked in coconut milk, fried fish and grilled fish. The kinds of fungi found were : Aspergillus niger, Aspergillus ochraceus, Khamir and Rhizopus sp. In the cooked fish we did not find any pathogenic bacteria.

  19. Culture.

    Science.gov (United States)

    Smith, Timothy B; Rodríguez, Melanie Domenech; Bernal, Guillermo

    2011-02-01

    This article summarizes the definitions, means, and research of adapting psychotherapy to clients' cultural backgrounds. We begin by reviewing the prevailing definitions of cultural adaptation and providing a clinical example. We present an original meta-analysis of 65 experimental and quasi-experimental studies involving 8,620 participants. The omnibus effect size of d = .46 indicates that treatments specifically adapted for clients of color were moderately more effective with that clientele than traditional treatments. The most effective treatments tended to be those with greater numbers of cultural adaptations. Mental health services targeted to a specific cultural group were several times more effective than those provided to clients from a variety of cultural backgrounds. We recommend a series of research-supported therapeutic practices that account for clients' culture, with culture-specific treatments being more effective than generally culture-sensitive treatments. © 2010 Wiley Periodicals, Inc.

  20. A Cultural Sexuality or a Sexual Culture?

    NARCIS (Netherlands)

    Vandermeersch, Patrick

    1990-01-01

    P. Vandermeersch, A Cultural Sexuality or a Sexual Culture? In: F. VAN DE VIJVER & G. HUTSCHEMAEKERS (ed.), The Investigation of Culture. Current Issues in Cultural Psychology, Tilburg, Tilburg University Press, 1990, 43-58.

  1. 50 CFR 216.93 - Tracking and verification program.

    Science.gov (United States)

    2010-10-01

    .... purse seine fishing, processing, and marketing in the United States and abroad. Verification of tracking... the Agreement on the IDCP. (d) Tracking cannery operations. (1) Whenever a U.S. tuna canning company..., canning, sale, rejection, etc.). (4) During canning activities, non-dolphin-safe tuna may not be mixed in...

  2. CONNECTION BETWEEN ECONOMICS, CULTURE AND CULTURAL DIPLOMACY

    Directory of Open Access Journals (Sweden)

    Agil Valiyev

    2017-09-01

    Full Text Available Today, culture is one of the main feeble factors of economic development.  The leading role of culture in economic development should be argued as multiplied: so, on firstly, as domestic value, on secondly, as a main factor of regional economic development advanced to raised gravity of different regions for residents, tourists and investors, on thirdly, as major parameters of social development based on tolerance, creativity and knowledge. To the different international experiences, culture is main part of economic development in our life. Cultural diversities are combined into a main reason economic development model. The article consist of explainations about the understanding of culture, cultural diplomacy and economics, approach on conflicts between culture and economics, to find how affecting of culture to economic development, the role of culture in economic development of Azerbaijan. The article can be considered as a useful resource  for experts and researchers conducting research in this field.

  3. Culture éducative, culture méthodologique et apprenants d'une langue-culture lointaine

    OpenAIRE

    サガズ, ミシェル; Sagaz, Michel

    2016-01-01

    It has long been recognized that we cannot separate culture and language (cultural and linguistic dimensions) when speaking of teaching and learning foreign languages. But, in this context, it seems that the notion of culture is related, exclusively or largely, to the culture which is linked to the language being studied by students (arts, popular culture, everyday life culture, etc.). This article highlights the fact that other aspects of culture should be taken into account in the intercult...

  4. From cultural traditions to cumulative culture: parameterizing the differences between human and nonhuman culture.

    Science.gov (United States)

    Kempe, Marius; Lycett, Stephen J; Mesoudi, Alex

    2014-10-21

    Diverse species exhibit cultural traditions, i.e. population-specific profiles of socially learned traits, from songbird dialects to primate tool-use behaviours. However, only humans appear to possess cumulative culture, in which cultural traits increase in complexity over successive generations. Theoretically, it is currently unclear what factors give rise to these phenomena, and consequently why cultural traditions are found in several species but cumulative culture in only one. Here, we address this by constructing and analysing cultural evolutionary models of both phenomena that replicate empirically attestable levels of cultural variation and complexity in chimpanzees and humans. In our model of cultural traditions (Model 1), we find that realistic cultural variation between populations can be maintained even when individuals in different populations invent the same traits and migration between populations is frequent, and under a range of levels of social learning accuracy. This lends support to claims that putative cultural traditions are indeed cultural (rather than genetic) in origin, and suggests that cultural traditions should be widespread in species capable of social learning. Our model of cumulative culture (Model 2) indicates that both the accuracy of social learning and the number of cultural demonstrators interact to determine the complexity of a trait that can be maintained in a population. Combining these models (Model 3) creates two qualitatively distinct regimes in which there are either a few, simple traits, or many, complex traits. We suggest that these regimes correspond to nonhuman and human cultures, respectively. The rarity of cumulative culture in nature may result from this interaction between social learning accuracy and number of demonstrators. Copyright © 2014 Elsevier Ltd. All rights reserved.

  5. Reconceptualizing Cultural Globalization: Connecting the “Cultural Global” and the “Cultural Local”

    Directory of Open Access Journals (Sweden)

    Stephen Magu

    2015-08-01

    Full Text Available Scholars generally are in agreement that the pace of globalization is rapidly accelerating. Globalization’s impact, beyond the socio-economic and political discourses, is affecting conceptions of culture and cultural studies, and changing and restructuring spaces, global, national and personal interactions and relationships. The “texts” and artifacts borne of culture—activities, events and our conception thereof are a mechanism for the propagation of culture. Simultaneously Westernization/Americanization impacts local cultures through consumerism, which obfuscates local traditions, knowledge and experiences. This research argues that culture is a dynamic, adaptive concept and practice, “borrowing” liberally from ideological and technological innovations of other cultures and integrating these borrowed aspects into the construction and modification of culture across spatial and geographical divides to ensure particular cultures’ survival. The research shows that the local affects the global, and vice versa. It selects local communication “texts” to show that cultures are not “victims” of globalization or the proliferation of mass media. Cultures actively adopt and integrate globalization’s technological artifacts. Globalization’s positive effects are dynamic and span cultural interactions and permeate structures of authority at personal, national and global levels.

  6. Security in Oceania in the 21st Century

    Science.gov (United States)

    2003-01-01

    War, in the Malaysian insurgency and for peace keeping in Lebanon and Sinai. It has been involved in UN peacekeeping since 1978. Because of this role...FOC tuna trade. Backed by the ICCAT resolution, the Japanese Diet (parliament) in June 1997 passed the Tuna Management Act. The Act mandated the

  7. Academic Culture and Campus Culture of Universities

    Science.gov (United States)

    Shen, Xi; Tian, Xianghong

    2012-01-01

    Academic culture of universities mainly consists of academic outlooks, academic spirits, academic ethics and academic environments. Campus culture in a university is characterized by individuality, academic feature, opening, leading, variety and creativity. The academic culture enhances the construction of campus culture. The campus culture…

  8. MANAJEMEN PEMBINAAN PRESTASI PADA KLUB BULUTANGKIS SE-KABUPATEN WONOSOBO TAHUN 2015

    Directory of Open Access Journals (Sweden)

    Septian Williyanto

    2016-02-01

    Full Text Available The type of this research is a quantitative with descriptive approach/ survey. Based on result of the research, it know that the founding program in the ABS Club, BST, Indoraya, and Tunas Perkasa have run well. Whereas for Baker Club and Mutiara haven’t run well because both of club haven’t do tryout program. The management system in a BST club have good management because it have a good active organization.While, for the ABS club, Baker, Indoraya, Mutiara, and Tunas Perkasa haven’t run well because of personal managed. The program of exercise that be done of ABS club, Baker, BST, Indoraya and Tunas Perkasa have run well. While for a Mutiara club haven’t run well and must add some exercise schedule. Facilities and Infrastructures of the ABS and BST club have a good because it facilitate by fitness center for supporting exercise program. Although, for Baker club, Indoraya, Mutiara, and Tunas Perkasa is still not enough and need some add some facilities. Funding in ABS and Baker club have good because it have sponsor however for BST club, Indoraya, Mutiara, and Tunas Perkasa haven’t not good. The conclusion of the research is the founding management that running by badminton club in Wonosobo Regency in years 2015 not maximumenough

  9. 77 FR 71501 - International Fisheries; Western and Central Pacific Fisheries for Highly Migratory Species...

    Science.gov (United States)

    2012-12-03

    ..., yellowfin tuna, and skipjack tuna unless: (1) The fish are unfit for human consumption; (2) there is... businesses that interact with the carrier vessel, such as the U.S. troll or pole-and- line fishing business... multiple offloading vessels and would distribute the costs accordingly. The costs borne by any single U.S...

  10. The effect of cultural interaction on cumulative cultural evolution.

    Science.gov (United States)

    Nakahashi, Wataru

    2014-07-07

    Cultural transmission and cultural evolution are important for animals, especially for humans. I developed a new analytical model of cultural evolution, in which each newborn learns cultural traits from multiple individuals (exemplars) in parental generation, individually explores around learned cultural traits, judges the utility of known cultural traits, and adopts a mature cultural trait. Cultural evolutionary speed increases when individuals explore a wider range of cultural traits, accurately judge the skill level of cultural traits (strong direct bias), do not strongly conform to the population mean, increase the exploration range according to the variety of socially learned cultural traits (condition dependent exploration), and make smaller errors in social learning. Number of exemplars, population size, similarity of cultural traits between exemplars, and one-to-many transmission have little effect on cultural evolutionary speed. I also investigated how cultural interaction between two populations with different mean skill levels affects their cultural evolution. A population sometimes increases in skill level more if it encounters a less skilled population than if it does not encounter anyone. A less skilled population sometimes exceeds a more skilled population in skill level by cultural interaction between both populations. The appropriateness of this analytical method is confirmed by individual-based simulations. Copyright © 2014 Elsevier Ltd. All rights reserved.

  11. Cross-cultural dimensions : organisational culture in Philip Morris, Lietuva

    OpenAIRE

    Grundey, Dainora

    2008-01-01

    Business globalization raised the new priorities for cross-cultural management theory and practice. The goal of this article is according to cross-cultural management and organizational culture theories to propose a new model of organizational culture with cross-cultural dimensions. The objectives of the paper are as follows: a) to disclose the essence of cross-cultural management and organizational culture; b) to carry out the empirical research of organizational culture in a selected Lithua...

  12. Cultural Centre, Destination Cultural Offer and Visitor Satisfaction

    Directory of Open Access Journals (Sweden)

    Benxiang Zeng

    2017-10-01

    Full Text Available This paper aims to establish the link between tourists’ perceptions on cultural offers and their overall satisfaction, and explore the implication of this link for sustainable tourist destination management. Assessing online customers’ reviews, this study identifies a positive correlation between visitors’ perspectives and experiences at the on-site cultural centre and visitors’ destination satisfaction. It suggests that the on-site cultural centre plays a critical role in building up visitors’ perception on cultural attributes of the destination, and its impact on visitor satisfaction is a double-edged sword. Visitors’ positive perspectives on the cultural centre enhance visitors’ experiences and contribute to their destination satisfaction; however, not only does a negative perspective on their cultural and spiritual experience compromise visitors’ satisfaction, but also subsequent negative online reviews damage the destination image and discourage visitor return/visit. The findings help destination management organisations to better understand visitors’ preference for cultural centres and therefore to improve visitors’ cultural experience. This paper appeals for further study of on-site cultural centres’ role in forming destination cultural attributes, and of social media’s potential in enriching cultural experience.

  13. Pengujian Kemampuan Daya Samak Cube Black dan Limbah Cair Gambir Terhadap Mutu Kulit Tersamak

    Directory of Open Access Journals (Sweden)

    Gustri Yeni

    2016-06-01

    Full Text Available Leather tanning industries generally use sintetic tanner such as chrome (Cr+3 which can damage environment. Therefore, it is needed to find environmentally friendly tannery material, one is by using gambier. The aim of this research was to know tannic ability of gambier on goat’s leather and tuna fish. The gambier for tannery material contained high tannin (>70% namely Cube black and liquid waste from gambier processing. Concentration of tannery material that would be used for tanned was 1 kg. Tanned leather was tested to tannery degree (DP and physical test included pull strength, elongation, and rip strength, at same treatment compared to chrome tannery. Test results leather tanned showed that, the higher the concentration of tannery material the higher the results of DP, and the physical characteristic was better. Tanned leather from goat that used Cube black gambier concentration at 4% gave DP value approximately equal to chrome tanner (38,45% and 36,60%. For tanned tuna fish gave value of DP were 39,57% and 31,35%. Tannery material of gambier gave value of pull strength, rip strength, and elongation were higher than chrome’s. The value of pull strength of goat’s leather was 730,37 kg cm-2, tuna fish was 353,33 kg cm-2 got from liquid waste tanner. The value of rip strength fof goat’s leather was 353,33 kg cm-2, tuna fish skin 29,96 kg cm-2, and elongation value from tuna fish skin 202,0% was gotten from Cube black gambier. The result of the research showed that tannery material of gambier had tannery characteristic that can replace tanner of chrome.ABSTRAKIndustri penyamakan kulit umumnya menggunakan bahan penyamak sintetis seperti krom (Cr+3 yang dapat merusak lingkungan. Untuk itu, perlu dicari bahan penyamak yang ramah lingkungan, diantaranya menggunakan gambir. Tujuan penelitian ini adalah mengetahui daya samak gambir terhadap kulit kambing dan ikan tuna. Gambir untuk  bahan penyamak mengandung kadar tanin tinggi (>70% adalah

  14. Cultural Understanding Through Cross-Cultural Analysis.

    Science.gov (United States)

    Briere, Jean-Francois

    1986-01-01

    A college course used an explicit intercultural approach and collective research activities to compare French and American cultures and to examine the reasons for cultural attitudes and culture conflict. Class assignments dealt with contrastive analyses of American and French institutions like advertising, cinema, feminism, etc. (MSE)

  15. Cultural similarity, cultural competence, and nurse workforce diversity.

    Science.gov (United States)

    McGinnis, Sandra L; Brush, Barbara L; Moore, Jean

    2010-11-01

    Proponents of health workforce diversity argue that increasing the number of minority health care providers will enhance cultural similarity between patients and providers as well as the health system's capacity to provide culturally competent care. Measuring cultural similarity has been difficult, however, given that current benchmarks of workforce diversity categorize health workers by major racial/ethnic classifications rather than by cultural measures. This study examined the use of national racial/ethnic categories in both patient and registered nurse (RN) populations and found them to be a poor indicator of cultural similarity. Rather, we found that cultural similarity between RN and patient populations needs to be established at the level of local labor markets and broadened to include other cultural parameters such as country of origin, primary language, and self-identified ancestry. Only then can the relationship between cultural similarity and cultural competence be accurately determined and its outcomes measured.

  16. PENGARUH UMUR BAHAN SETEK TERHADAP PERTUMBUHAN SETEK AKOR (Acacia auriculiformis A. Cunn. Ex Benth

    Directory of Open Access Journals (Sweden)

    nurmawati siregar

    2016-09-01

    Full Text Available Akor (Acacia auriculiformis termasuk salah satu jenis sumber energi biomassa mempunyai prospek yang baik untuk dikembangkan. Salah satu faktor yang menentukan keberhasilan untuk pengembangannya adalah ketersediaan bibit bermutu. Bibit bermutu dapat diperoleh dari perbanyakan generatif (biji dan vegetatif (setek. Melalui setek dapat diproduksi bibit bermutu dalam jumlah yang cukup, setiap waktu dan tidak tergantung dengan musim. Salah satu faktor yang menentukan keberhasilan perbanyakan vegetatif dengan setek adalah juvenilitas (umur bahan setek, oleh karena itu dilakukan penelitian pengaruh umur bahan setek. Rancangan yang digunakan adalah Rancangan Acak Kelompok (RAK dengan perlakuan umur bahan setek yaitu umur 2,3,4 dan 5 bulan, ulangan tiga kali dan setiap unit perlakuan terdiri dari 45 setek. Respon pertumbuhan yang diamati meliputi: waktu tumbuh tunas setek, persentase tumbuh setek, panjang akar, jumlah akar, panjang tunas, berat kering akar, berat kering tunas, ratio tunas dengan akar dan analisis ratio C/N. Umur bahan setek berpengaruh nyata terhadap semua parameter yang diamati kecuali persen tumbuh setek. Bahan setek yang paling optimal digunakan untuk jenis akor adalah pada umur 3 - 4 bulan.

  17. Halimeda tuna

    African Journals Online (AJOL)

    cas

    Centre of Advanced Study in Marine Biology, Faculty of Marine Sciences, Annamalai University, ... secondary metabolites characterised by a broad spectrum of biological ... 4°C. These bacterial and fungal strains were isolated and obtained.

  18. Cultural neuroscience and psychopathology: prospects for cultural psychiatry.

    Science.gov (United States)

    Choudhury, Suparna; Kirmayer, Laurence J

    2009-01-01

    There is a long tradition that seeks to understand the impact of culture on the causes, form, treatment, and outcome of psychiatric disorders. An early, colonialist literature attributed cultural characteristics and variations in psychopathology and behavior to deficiencies in the brains of colonized peoples. Contemporary research in social and cultural neuroscience holds the promise of moving beyond these invidious comparisons to a more sophisticated understanding of cultural variations in brain function relevant to psychiatry. To achieve this, however, we need better models of the nature of psychopathology and of culture itself. Culture is not simply a set of traits or characteristics shared by people with a common geographic, historical, or ethnic background. Current anthropology understands culture as fluid, flexible systems of discourse, institutions, and practices, which individuals actively use for self-fashioning and social positioning. Globalization introduces new cultural dynamics and demands that we rethink culture in relation to a wider domain of evolving identities, knowledge, and practice. Psychopathology is not reducible to brain dysfunction in either its causes, mechanisms, or expression. In addition to neuropsychiatric disorders, the problems that people bring to psychiatrists may result from disorders in cognition, the personal and social meanings of experience, and the dynamics of interpersonal interactions or social systems and institutions. The shifting meanings of culture and psychopathology have implications for efforts to apply cultural neuroscience to psychiatry. We consider how cultural neuroscience can refine use of culture and its role in psychopathology using the example of adolescent aggression as a symptom of conduct disorder.

  19. Cross-Cultural Impression Management: A Cultural Knowledge Audit Model

    Science.gov (United States)

    Spong, Abigail; Kamau, Caroline

    2012-01-01

    Purpose: Many people moving into a new culture for work or study do so without prior cross-cultural training, yet successful cultural adaptation has important ramifications. The purpose of this paper is to focus on cross-cultural impression management as an element of cultural adaptation. Does cultural adaptation begin by paying strong attention…

  20. Dehistoricized Cultural Identity and Cultural Othering

    Science.gov (United States)

    Weiguo, Qu

    2013-01-01

    The assumption that each culture has its own distinctive identity has been generally accepted in the discussion of cultural identities. Quite often identity formation is not perceived as a dynamic and interactive ongoing process that engages other cultures and involves change in its responses to different challenges at different times. I will…

  1. What Is so "Cultural" About Cultural Entrepreneurship

    Directory of Open Access Journals (Sweden)

    Staffan Albinsson

    2017-04-01

    Full Text Available The term “cultural entrepreneurship” has been increasingly used during the new millennium, mirroring the rapidly growing importance of the “quaternary sector of the economy,” i.e. knowledge-based industries, including culture. Exploration of the literature in which the term “cultural entrepreneurship” is used does not bring a solid, clear-cut, and unambiguous understanding of its definition or meaning. The aim of this paper is to present various uses of the concept and to bring about some clarity in how the concept can be understood. Two overarching uses of the cultural entrepreneurship concept have been found: 1. the anthropologist’s and institutional economist’s use, which indicates the dynamic development of intangible cultural features such as symbols, myths, languages, beliefs, values, norms, rituals, and attitudes in and between societies, and 2. the arts development use, which indicates the dynamic development of cultural services, tangible goods, and individual or collective career promotion. Most authors use a cultural entrepreneurship concept without defining it. Authors could apply more precise definitions by using a quadruple bottom-line framework to position themselves in the nexus of financial, social, artistic, and cultural perspectives.

  2. Níveis de mercúrio em atum sólido enlatado comercializado na cidade do Rio de Janeiro Total mercury levels in canned tuna fish commercialized at the Rio de Janeiro city, Brazil

    Directory of Open Access Journals (Sweden)

    Allegra YALLOUZ

    2001-01-01

    Full Text Available No presente trabalho, estudou-se o nível de mercúrio em atum sólido enlatado, comercializado na cidade do Rio de Janeiro. Foram analisadas 39 amostras, pertencente a 5 marcas e lotes distintos, utilizando-se a espectrometria de absorção atômica pela técnica de vapor-frio. Os resultados obtidos demonstraram que 53% das amostras apresentaram um teor acima do máximo recomendado, sendo que somente uma entre as cinco marcas estudadas apresentou todas as amostras com níveis dentro dos limites tolerados. Tais resultados demonstram a necessidade de um maior controle da qualidade destes produtos.The present study investigated the mercury levels in canned tuna fish, commercialized in the Rio de Janeiro city, Brazil. Thirty nine samples from five different makers were analyzed by cold vapor atomic absorption spectrometry. The results showed that 53% of the samples presented levels above the WHO (World Health Organization recommended value, and only one from the five suppliers presented all their samples below this level. Such results indicate that it urges a better quality control for this food.

  3. Cultural tourism and tourism cultures

    DEFF Research Database (Denmark)

    Ooi, Can-Seng

    Presenting a comprehensive and dynamic understanding of cultural tourism, this volume examines cultural mediators and how they help tourists appreciate foreign cultures. It also shows how tourism experiences are strategically crafted by mediators, the complexity of the mediation process, and how...... various products are mediated differently. A number of different products are investigated, including destination brand identities, "living" cultures and everyday life, art and history. The author illustrates his arguments by comparing the tourism strategies of Copenhagen and Singapore, and demonstrates...... how tourism is an agent for social change. The author also offers an original and refreshing way of understanding tourist behaviour through the concept of the "versatile tourist". The book's empirical cases and dialogic framework provide new and deep insights into tourism activities. In his...

  4. Mercury and selenium levels in 19 species of saltwater fish from New Jersey as a function of species, size, and season

    Science.gov (United States)

    Burger, Joanna; Gochfeld, Michael

    2014-01-01

    There are few data on risks to biota and humans from mercury levels in saltwater fish. This paper examines mercury and selenium levels in muscle of 19 species of fish caught by recreational fisherfolk off the New Jersey shore, as a function of species of fish, size, and season, and risk of mercury to consumers. Average mercury levels ranged from 0.01 ppm (wet weight) (Menhaden Brevoortia tyrannus) to 1.83 ppm (Mako Shark Isurus oxyrinchus). There were four categories of mercury levels: very high (only Mako), high (averaging 0.3–0.5 ppm, 3 species), medium (0.14–0.20 ppm, 10 species), and low (below 0.13 ppm, 5 species). Average selenium levels for the fish species ranged from 0.18 ppm to 0.58 ppm, and had lower variability than mercury (coefficient of variation=38.3 vs 69.1%), consistent with homeostatic regulation of this essential element. The correlation between mercury and selenium was significantly positive for five and negative for two species. Mercury levels showed significant positive correlations with fish size for ten species. Size was the best predictor of mercury levels. Selenium showed no consistent relationship to fish length. Over half of the fish species had some individual fish with mercury levels over 0.3 ppm, and a third had fish with levels over 0.5 ppm, levels that pose a human health risk for high end consumers. Conversely several fish species had no individuals above 0.5 ppm, and few above 0.3 ppm, suggesting that people who eat fish frequently, can reduce their risk from mercury by selecting which species (and which size) to consume. Overall, with the exception of shark, Bluefin Tuna (Thunnus thynnus), Bluefish (Pomatomus saltatrix) and Striped Bass (Morone saxatilis), the species sampled are generally medium to low in mercury concentration. Selenium:mercury molar ratios were generally above 1:1, except for the Mako shark. PMID:21292311

  5. Examining Cultural Intelligence and Cross-Cultural Negotiation Effectiveness

    Science.gov (United States)

    Groves, Kevin S.; Feyerherm, Ann; Gu, Minhua

    2015-01-01

    International negotiation failures are often linked to deficiencies in negotiator cross-cultural capabilities, including limited understanding of the cultures engaged in the transaction, an inability to communicate with persons from different cultural backgrounds, and limited behavioral flexibility to adapt to culturally unfamiliar contexts.…

  6. Culture-specific delusions. Sense and nonsense in cultural context.

    Science.gov (United States)

    Gaines, A D

    1995-06-01

    It can be said that a definition of delusions requires the invocation of cultural understandings, standards of acceptability, as well as conceptions of reality and the forces that animate it. For these reasons, the determination of delusional or normative ideation can only be effected properly within particular cultural contexts. The cross-cultural record suggests that it is difficult to separate the delusional from the cultural; a belief that is patterened and culturally specific is, by definition a cultural, not a delusional belief. One must rely upon particular, relevant local cultural understandings to ascertain when the bounds of culture have been transgressed and meaning has given way to unshareable nonsense.

  7. Sistema\tde ejercicios para elevar el rendimiento deportivo de las lanzadoras de Softball de la categoría juvenil en la provincia Las Tunas

    Directory of Open Access Journals (Sweden)

    Glenda Isabel Báez Rojas

    2009-03-01

    Full Text Available Para un Equipo de Softball el lanzador ocupa la posición mas difícil y principal a la defensiva, tanto es así que en la mayoría de los casos el éxito o el fracaso de un partido dependen de sus habilidades. La presente investigación, sistema de ejercicios para las lanzadoras de Softball se comenzó aplicar en el curso escolar 2006/2007 en la categoría juvenil de la provincia de Las Tunas, tomando como muestra 4 lanzadoras de apenas un año de experiencia.A través de los instrumentos de diagnóstico, la encuesta y la entrevista aplicados a atletas y entrenadores de la categoría juvenil del sexo femenino se constato que las lanzadoras presentaban grandes insuficiencias en la realización de los elementos técnicos de lanzar, producto a la no existencia de un trabajo técnico enla  primera  etapa  de  formación  a  largo  plazo  del  atleta,  trayendo  como consecuencia resultados discretos. La aplicación del sistema de ejercicios permitió a las lanzadoras juveniles elevar el rendimiento deportivo en correspondencia con sus edades. Para dar cumplimiento a las tareas planteadas y al desarrollo de esta investigación se utilizaron varios métodos, pero el de mayor incidencia en el resultado fue el método empírico, la observación, permitiendo evaluar la calidad de la ejecución en la técnica de lanzar en cada una de las fases propuestas.

  8. Culture suédoise, culture d’entreprise, culture populaire

    OpenAIRE

    Merle, Anthony

    2013-01-01

    Plus qu’un commerce, IKEA est un phénomène culturel à trois dimensions, à la fois image (construite ?) de la culture suédoise, modèle (prétendu ?) d’une certaine culture d’entreprise, et marque imprégnant largement la culture populaire. Par sa communication et sa politique, le groupe IKEA se présente comme vendeur d’un Ailleurs, à savoir celui de son origine suédoise. À partir du cas IKEA, cet article a pour objectif d’interroger le rôle de la distance cognitive (Ici/Ailleurs) pour comprendre...

  9. Organizational culture

    OpenAIRE

    Schein, Edgar H.

    1988-01-01

    Cultural orientations of an organization can be its greatest strength, providing the basis for problem solving, cooperation, and communication. Culture, however, can also inhibit needed changes. Cultural changes typically happen slowly – but without cultural change, many other organizational changes are doomed to fail. The dominant culture of an organization is a major contributor to its success. But, of course, no organizational culture is purely one type or another. And the existence of sec...

  10. Cultural tourism is in context of mass culture

    OpenAIRE

    Гарбар, Г. А.

    2014-01-01

    Philosophic analysis of tourist activity within mass culture is carried out in the thesis. Cultural tourism within mass culture is more than orientation on cultural values, it is the understanding of peculiar cultural values within the context of generally accepted ones, confirmation of tourist activity peculiarities.Having reviewed tourism as a coherent system, the facts about impact of tourism on the society development are determined, potential development zones are identified, which are a...

  11. Citizenship and cultural diversity in agenda of cultural policies

    Directory of Open Access Journals (Sweden)

    Patricia Silva Dorneles

    2016-01-01

    Full Text Available This is a discussion paper which aims to contribute to the systematization of studies, concepts and practices on cultural policies which have been developed in previous years in Brazil and are orienting cultural actions and public programs in the country, also influencing the Occupational Therapy. Citizenship and Cultural Diversity are concepts under construction and are part of the of the agenda of cultural policies and as well as the reflections and practices of various occupational therapists who are acting in a constant dialogue with the cultural area by means of the formation in cultural management, cultural mapping, programs and grant projects aimed to promote inventive identities, traditional communities, native populations, urban mobility, and cultural networks and exchange initiatives, among others. The article presents the process of this conceptual construction and the constitution of experiences aiming the democratization of the culture in the history of Brazilian cultural public policies, over which are being discussed approach paths and possibilities for Occupational Therapy.

  12. Cultural hegemony? Educators' perspectives on facilitating cross-cultural dialogue.

    Science.gov (United States)

    Zaidi, Zareen; Verstegen, Daniëlle; Vyas, Rashmi; Hamed, Omayma; Dornan, Tim; Morahan, Page

    2016-01-01

    We live in an age when education is being internationalized. This can confront students with 'cultural hegemony' that can result from the unequal distribution of power and privilege in global society. The name that is given to awareness of social inequality is 'critical consciousness'. Cross-cultural dialogue provides an opportunity for learners to develop critical consciousness to counter cultural hegemony. The purpose of this research was to understand how learners engage with cross-cultural dialogue, so we can help them do so more effectively in the future. The setting for this research was an online discussion in an international health professions educator fellowship program. We introduced scenarios with cultural references to study the reaction of participants to cultural conversation cues. We used an inductive thematic analysis to explore power and hegemony issues. Participants reflected that personally they were more likely to take part in cross-cultural discussions if they recognized the context discussed or had prior exposure to educational settings with cultural diversity. They identified barriers as lack of skills in facilitating cross-cultural discussions and fear of offending others. They suggested deliberately introducing cultural issues throughout the curriculum. Our results indicate that developing critical consciousness and cross-cultural competency will require instructional design to identify longitudinal opportunities to bring up cross-cultural issues, and training facilitators to foster cross-cultural discussions by asking clarifying questions and navigating crucial/sensitive conversations.

  13. Safeguards Culture

    Energy Technology Data Exchange (ETDEWEB)

    Frazar, Sarah L.; Mladineo, Stephen V.

    2012-07-01

    The concepts of nuclear safety and security culture are well established; however, a common understanding of safeguards culture is not internationally recognized. Supported by the National Nuclear Security Administration, the authors prepared this report, an analysis of the concept of safeguards culture, and gauged its value to the safeguards community. The authors explored distinctions between safeguards culture, safeguards compliance, and safeguards performance, and evaluated synergies and differences between safeguards culture and safety/security culture. The report concludes with suggested next steps.

  14. Cultural hegemony? Educators’ perspectives on facilitating cross-cultural dialogue

    Directory of Open Access Journals (Sweden)

    Zareen Zaidi

    2016-11-01

    Full Text Available Background: We live in an age when education is being internationalized. This can confront students with ‘cultural hegemony’ that can result from the unequal distribution of power and privilege in global society. The name that is given to awareness of social inequality is ‘critical consciousness’. Cross-cultural dialogue provides an opportunity for learners to develop critical consciousness to counter cultural hegemony. The purpose of this research was to understand how learners engage with cross-cultural dialogue, so we can help them do so more effectively in the future. Method: The setting for this research was an online discussion in an international health professions educator fellowship program. We introduced scenarios with cultural references to study the reaction of participants to cultural conversation cues. We used an inductive thematic analysis to explore power and hegemony issues. Results: Participants reflected that personally they were more likely to take part in cross-cultural discussions if they recognized the context discussed or had prior exposure to educational settings with cultural diversity. They identified barriers as lack of skills in facilitating cross-cultural discussions and fear of offending others. They suggested deliberately introducing cultural issues throughout the curriculum. Conclusion: Our results indicate that developing critical consciousness and cross-cultural competency will require instructional design to identify longitudinal opportunities to bring up cross-cultural issues, and training facilitators to foster cross-cultural discussions by asking clarifying questions and navigating crucial/sensitive conversations.

  15. Cultural hegemony? Educators’ perspectives on facilitating cross-cultural dialogue

    Science.gov (United States)

    Zaidi, Zareen; Verstegen, Daniëlle; Vyas, Rashmi; Hamed, Omayma; Dornan, Tim; Morahan, Page

    2016-01-01

    Background We live in an age when education is being internationalized. This can confront students with ‘cultural hegemony’ that can result from the unequal distribution of power and privilege in global society. The name that is given to awareness of social inequality is ‘critical consciousness’. Cross-cultural dialogue provides an opportunity for learners to develop critical consciousness to counter cultural hegemony. The purpose of this research was to understand how learners engage with cross-cultural dialogue, so we can help them do so more effectively in the future. Method The setting for this research was an online discussion in an international health professions educator fellowship program. We introduced scenarios with cultural references to study the reaction of participants to cultural conversation cues. We used an inductive thematic analysis to explore power and hegemony issues. Results Participants reflected that personally they were more likely to take part in cross-cultural discussions if they recognized the context discussed or had prior exposure to educational settings with cultural diversity. They identified barriers as lack of skills in facilitating cross-cultural discussions and fear of offending others. They suggested deliberately introducing cultural issues throughout the curriculum. Conclusion Our results indicate that developing critical consciousness and cross-cultural competency will require instructional design to identify longitudinal opportunities to bring up cross-cultural issues, and training facilitators to foster cross-cultural discussions by asking clarifying questions and navigating crucial/sensitive conversations. PMID:27890048

  16. CULTURE, CULTURE LEARNING AND NEW TECHNOLOGIES: TOWARDS A PEDAGOGICAL FRAMEWORK

    Directory of Open Access Journals (Sweden)

    Mike Levy

    2007-02-01

    Full Text Available This paper seeks to improve approaches to the learning and teaching of culture using new technologies by relating the key qualities and dimensions of the culture concept to elements within a pedagogical framework. In Part One, five facets of the culture concept are developed: culture as elemental; culture as relative; culture as group membership; culture as contested; and culture as individual (variable and multiple. Each perspective aims to provide a focus for thinking about culture, and thereby to provide a valid and useful point of departure for thinking about the practice of culture learning and teaching with new technologies. The referenced literature draws from a broad range of disciplines and definitions of culture. In Part Two, five projects are chosen to represent relevant technologies currently in use for culture learning: e-mail, chat, a discussion forum and a Web-based project. Each project is used to illustrate facets of the culture concept discussed in Part One with a view to identifying key elements within a pedagogical framework that can help us respond effectively to the challenge of culture learning and teaching utilising new technologies. Thus the goal is to align fundamental qualities of the culture concept with specific pedagogical designs, tasks and technologies.

  17. Cultural Competence and the Operational Commander: Moving Beyond Cultural Awareness into Culture-Centric Warfare

    National Research Council Canada - National Science Library

    Karcanes, James A

    2007-01-01

    The term "cultural awareness" serves as the new favorite Department of Defense buzzword but fails in its definition to adequately articulate the complexity of culture and the high level of cultural...

  18. Cultural Journalism and Cultural Critique in a changing Media Landscape

    DEFF Research Database (Denmark)

    Nørgaard Kristensen, Nete; From, Unni

    2015-01-01

    This special issue addresses a topic of journalism studies that has previously been somewhat neglected but which has gained increasing scholarly attention since the mid-2000s: the coverage and evaluation of art and culture, or what we term “cultural journalism and cultural critique.......” In this introduction, we highlight three issues that serve to frame the study of cultural journalism and cultural critique more generally and the eight articles of this special issue more specifically: (1) the constant challenge of demarcating cultural journalism and cultural critique, including the interrelations...... of “journalism” and “critique”; (2) the dialectic of globalisation’s cultural homogenisation, on the one hand, and the specificity of local/national cultures, on the other; and (3) the digital media landscape seen in terms of the need to rethink, perhaps even redefine cultural journalism and cultural critique...

  19. Culture, Personality, Health, and Family Dynamics: Cultural Competence in the Selection of Culturally Sensitive Treatments

    Science.gov (United States)

    Sperry, Len

    2010-01-01

    Cultural sensitivity and cultural competence in the selection of culturally sensitive treatments is a requisite for effective counseling practice in working with diverse clients and their families, particularly when clients present with health issues or medical problems. Described here is a strategy for selecting culturally sensitive treatments…

  20. Cultured Trash, Not Trash Culture

    Directory of Open Access Journals (Sweden)

    Taufiqurrohman Taufiqurrohman

    2017-09-01

    Full Text Available As civilized creature, human actually can manage trash as well as possible although it is often stereotyped as a vain thing. This article gives the proof that trash can be cultured as well so that a society can take benefits from the existence of it. This article parses ways of orderly managing it at schools, in this case two schools in Jepara. The results say that trash can be cultured by having an organization to manage the Trash Bank at schools and to train students to classify and recycle trash then take advantage of it by selling the collected and the recycled trash. It makes trash have good transformation of values, repelling against the prior stereotype. Finally, by taking example from Trash Bank management at schools, human can have so cultured trash that they would not be trapped by trash culture.

  1. Cultural entrepreneurship

    NARCIS (Netherlands)

    A. Klamer (Arjo)

    2011-01-01

    textabstractCultural entrepreneurship is a new character in the cultural sector. This paper characterizes the cultural entrepreneur paying homage to the hermeneutic approach of Don Lavoie and others. The challenge is to render the "cultural" meaningful. An invention is the highlighting of the

  2. Playing up and playing down cultural identity: Introducing cultural influence and cultural variability.

    Science.gov (United States)

    Ferguson, Gail M; Nguyen, Jacqueline; Iturbide, Maria I

    2017-01-01

    Cultural variability (CV) is introduced as an overlooked dimension of cultural identity development pertaining to emphasizing and de-emphasizing the influence of a single cultural identity (i.e., cultural influence [CI]) on daily interactions and behaviors. The Cultural IDentity Influence Measure (CIDIM) is introduced as a novel measure of CI and CV, and hypothesis-driven validation is conducted in two samples along with exploration of associations between CV and well-being. A multicultural sample of 242 emerging adults participated in a daily diary study (Mage = 19.95 years, SDage = 1.40) by completing up to eight daily online surveys containing the CIDIM, criterion measures (ethnic identity, other group orientation, ethnic identity salience and daily variability in salience, social desirability), and measures of personal and interpersonal well-being. A second validation sample (n = 245) completed a 1-time survey with the CIDIM and a subset of criterion measures. Results using both samples show evidence of CI and CV and demonstrate the validity, reliability, and domain-sensitivity of the CIDIM. Further, CV made unique and positive contributions to predicting interaction quality after accounting for ethnic salience and variability in ethnic salience. An analytic approach utilizing standard deviations produced near-identical results to multilevel modeling and is recommended for parsimony. Ethnic minority and majority individuals make daily adjustments to play up and play down the influence of cultural identity on their social interactions and behaviors, and these adjustments predict interpersonal well-being. Cultural influence and cultural variability contribute to our emerging understanding of cultural identity as dynamic and agentic. (PsycINFO Database Record (c) 2017 APA, all rights reserved).

  3. Migration, cultural bereavement and cultural identity

    OpenAIRE

    BHUGRA, DINESH; BECKER, MATTHEW A

    2005-01-01

    Migration has contributed to the richness in diversity of cultures, ethnicities and races in developed countries. Individuals who migrate experience multiple stresses that can impact their mental well being, including the loss of cultural norms, religious customs, and social support systems, adjustment to a new culture and changes in identity and concept of self. Indeed, the rates of mental illness are increased in some migrant groups. Mental health practitioners need to be ...

  4. Managing Culture--Making Culture Work for You

    Science.gov (United States)

    National Centre for Vocational Education Research (NCVER), 2006

    2006-01-01

    An understanding of culture in organisations can offer insights into individual and group behaviour, and leadership. It can help to explain not just what happens in an organisation, but why it happens. However, many people are concerned not just with understanding culture, and hence organisational life. They see culture as something to be…

  5. Types of cross-cultural studies in cross-cultural psychology

    NARCIS (Netherlands)

    van de Vijver, F.J.R.; Lonner, W.J.; Dinnel, D.L.; Hayes, S.A.; Sattler, D.N.

    2003-01-01

    From a methodological perspective cross-cultural studies in psychology differ in three dimensions. First, cross-cultural psychological studies can be exploratory or test specific hypotheses. Second, some cross-cultural studies compare countries or ethnic groups while other cross-cultural studies

  6. Cultural values and cross-cultural video consumption on YouTube

    Science.gov (United States)

    Macy, Michael

    2017-01-01

    Video-sharing social media like YouTube provide access to diverse cultural products from all over the world, making it possible to test theories that the Web facilitates global cultural convergence. Drawing on a daily listing of YouTube’s most popular videos across 58 countries, we investigate the consumption of popular videos in countries that differ in cultural values, language, gross domestic product, and Internet penetration rate. Although online social media facilitate global access to cultural products, we find this technological capability does not result in universal cultural convergence. Instead, consumption of popular videos in culturally different countries appears to be constrained by cultural values. Cross-cultural convergence is more advanced in cosmopolitan countries with cultural values that favor individualism and power inequality. PMID:28531228

  7. Cultural values and cross-cultural video consumption on YouTube.

    Science.gov (United States)

    Park, Minsu; Park, Jaram; Baek, Young Min; Macy, Michael

    2017-01-01

    Video-sharing social media like YouTube provide access to diverse cultural products from all over the world, making it possible to test theories that the Web facilitates global cultural convergence. Drawing on a daily listing of YouTube's most popular videos across 58 countries, we investigate the consumption of popular videos in countries that differ in cultural values, language, gross domestic product, and Internet penetration rate. Although online social media facilitate global access to cultural products, we find this technological capability does not result in universal cultural convergence. Instead, consumption of popular videos in culturally different countries appears to be constrained by cultural values. Cross-cultural convergence is more advanced in cosmopolitan countries with cultural values that favor individualism and power inequality.

  8. Cultural values and cross-cultural video consumption on YouTube.

    Directory of Open Access Journals (Sweden)

    Minsu Park

    Full Text Available Video-sharing social media like YouTube provide access to diverse cultural products from all over the world, making it possible to test theories that the Web facilitates global cultural convergence. Drawing on a daily listing of YouTube's most popular videos across 58 countries, we investigate the consumption of popular videos in countries that differ in cultural values, language, gross domestic product, and Internet penetration rate. Although online social media facilitate global access to cultural products, we find this technological capability does not result in universal cultural convergence. Instead, consumption of popular videos in culturally different countries appears to be constrained by cultural values. Cross-cultural convergence is more advanced in cosmopolitan countries with cultural values that favor individualism and power inequality.

  9. Blood culture bottles are superior to conventional media for vitreous culture.

    Science.gov (United States)

    Thariya, Patsuda; Yospaiboon, Yosanan; Sinawat, Suthasinee; Sanguansak, Thuss; Bhoomibunchoo, Chavakij; Laovirojjanakul, Wipada

    2016-08-01

    To compare blood culture bottles and conventional media for the vitreous culture in patients with clinically suspected infectious endophthalmitis. Retrospective comparative study at KKU Eye Center, Khon Kaen University. There were 342 patients with clinically suspected infectious endophthalmitis participated in the study. The vitreous specimens were inoculated in both blood culture bottles and on conventional culture media (blood agar, MacConkey agar, chocolate agar, Sabouraud dextrose agar and thioglycolate broth). The number of positive culture yields in both blood culture bottles and conventional media. Positive culture yields in both methods were found in 151 eyes (49.5%). There were 136 of 151 eyes (90.1%) with positive culture in blood culture bottles, whereas 99 of 151 eyes (65.6%) yielded positive cultures in conventional media. These findings were different with a statistical significance (P culture bottles and conventional media improved the yield. Blood culture bottles are superior to conventional media for vitreous culture in clinically suspected infectious endophthalmitis. Vitreous culture using blood culture bottles should be recommended as the primary method for microbiological diagnosis. A combination of both methods further improves the positive culture yield. © 2016 Royal Australian and New Zealand College of Ophthalmologists.

  10. Family Counseling: Cultural Sensitivity, Relativism, and the Cultural Defense.

    Science.gov (United States)

    May, Kathleen M.

    1998-01-01

    Cultural sensitivity, cultural relativism, and the cultural defense are defined and described. Each concept is addressed in terms of its relationship to couple and family counseling. The role of counselor must be broadened and deepened to include the role of cultural broker. (Author/EMK)

  11. Industrial cultures

    DEFF Research Database (Denmark)

    Rasmussen, Lauge Baungaard

    1996-01-01

    The chapter deals with different paradigms andtheories of cultural development. The problem toexplain change and methods to analyse developmentin different cultures are presented and discussed.......The chapter deals with different paradigms andtheories of cultural development. The problem toexplain change and methods to analyse developmentin different cultures are presented and discussed....

  12. Beyond cultural values? Cultural leadership ideals and entrepreneurship

    OpenAIRE

    Stephan, Ute; Pathak, Saurav

    2016-01-01

    This paper offers a fresh perspective on national culture and entrepreneurship research. It explores the role of Culturally-endorsed implicit Leadership Theories (CLTs) – i.e., the cultural expectations about outstanding, ideal leadership – on individual entrepreneurship. Developing arguments based on culture-entrepreneurship fit, we predict that charismatic and self-protective CLTs positively affect entrepreneurship. They provide a context that enables entrepreneurs to be co-operative in ord...

  13. Articulating cultures: socio-cultural experiences of black female ...

    African Journals Online (AJOL)

    Articulating cultures: socio-cultural experiences of black female immigrant students in South African schools 1. ... Gender and Behaviour ... and worrisome issue is that of the erosion of the social and cultural mores of Black3 immigrant students.

  14. PEMBELAJARAN MATEMATIKA BERBASIS KOMPUTER DENGAN METODE MULTIKOMUNIKASI UNTUK SISWA KELAS IV SDLB-B

    Directory of Open Access Journals (Sweden)

    Agus Salim

    2016-05-01

    Full Text Available Abstract - A deaf person is an individual who has a hearing impediment in both permanent and not permanent. In each teaching for deaf children, teaching aids needed to visualize the material presented, making it easier to understand. Mathematic learning models can be appropriate tools in teaching math to deaf children. This learning model is intended for students in 4th grade of SDLB B. This application presents mathematic material that is explained using animations, pictures, text and videos. By using this applications, teaching and learning activities become more enjoyable and can shorten the time of teaching. The research shows that deaf person more focused on his learning material comparing with the conventional teaching. This method makes people learn 40% faster than conventional method. Keywords : Deaf person, Computer based learning, Mathematics learning model   Abstrak -Tuna rungu adalah individu yang memiliki hambatan dalam hal pendengaran baik permanen maupun tidak. Dalam setiap proses mengajar anak tuna rungu, alat peraga sangat dibutuhkan untuk memvisualisasikan materi yang disampaikan, sehingga lebih mudah untuk memahami. Model pembelajaran matematika dapat menjadi alat yang tepat dalam mengajar matematika untuk anak tuna rungu. Model pembelajaran ini ditujukan untuk siswa kelas 4 dari SDLB-B. Aplikasi ini menyajikan materi matematika menggunakan animasi, gambar, teks dan video. Dengan menggunakan ini aplikasi, kegiatan belajar-mengajar menjadi lebih menyenangkan dan dapat mempersingkat waktu mengajar. Penelitian menunjukkan bahwa individu tuna rungu lebih terfokus pada materi pelajarannya dibandingkan dengan cara konvensional. Metode ini membuat orang belajar 40% lebih cepat dibandingkan dengan metode konvensional. Kata kunci : Tuna rungu, Pembelajaran dasar komputer, Model pembelajaran matematika

  15. Occupation, well-being, and culture: Theory and cultural humility.

    Science.gov (United States)

    Hammell, Karen R Whalley

    2013-10-01

    The Canadian Model of Occupational Performance and Engagement depicts individuals embedded within cultural environments that afford occupational possibilities. Culture pertains not solely to ethnicity or race but to any dimension of diversity, including class, gender, sexual orientation, and ability. This paper highlights specific dimensions of cultural diversity and their relationships to occupational engagement and well-being. Cultural variations constitute the basis for a socially constructed hierarchy of traits that significantly determine occupational opportunities and impact mental health and well-being. Cultural humility is an approach to redressing power imbalances in client-therapist relationships by incorporating critical self-evaluation and recognizing that cultural differences lie not within clients but within client-therapist relationships. It is proposed that theoretical relevance would be enhanced if culturally diverse perspectives were incorporated into theories of occupation. Cultural humility is advocated as an approach to theoretical development and in efforts to counter professional Eurocentrism, ethnocentrism, and intellectual colonialism.

  16. Nuclear safety culture based on the organizational and individual culture

    International Nuclear Information System (INIS)

    Li Jingxi; Ren Ou

    2005-01-01

    The nuclear safety culture is used increasingly and developed by countries that have nu- clear plants all over the world, since the term 'safety culture' was first introduced by IAEA in 1986. Enterprises culture reflects many terms in an enterprise, such as management level and staff quality. The safety culture is the center in a nuclear enterprises culture, and relates directly to the safety and outstanding achievement of operation. This paper discusses the nuclear safety culture from the viewpoints of the organizational and individual cultures. (authors)

  17. Digital culture as a converging paradigm for technology and culture: Challenges for the culture sector

    Directory of Open Access Journals (Sweden)

    Aleksandra Uzelac

    2010-05-01

    Full Text Available Digital culture is a new and complex concept. Digital advances are increasingly interacting with the world of culture and the arts, leading to a convergence of technologies, media and information and shaping communication modes. The new possibilities offered by the digital technologies -namely, global connectivity and the emergence of new networks- challenge our traditional understanding of culture and make it necessary for us to take on the board the concept of a digital culture. This article views digital culture as a new social system that determines experiences and opportunities for the citizens of today. Digital technologies and the networked environment have introduced new practices, opportunities and threats, and the culture sector needs to find appropriate ways for operating in this new reality.

  18. Exploring the 'cultural' in cultural competencies in Pacific mental health.

    Science.gov (United States)

    Samu, Kathleen Seataoai; Suaalii-Sauni, Tamasailau

    2009-02-01

    Cultural competency is about the ability of individuals and systems to respond respectfully and effectively to the cultural needs of peoples of all cultures. Its general attributes include knowledge, attitudes, skills and professional judgment. In Pacific mental health, 'the cultural' is generally understood to be ethnic culture. Accordingly, Pacific cultural competencies assume ethnic specific markers. In mental health Pacific cultural competencies has seen a blending of cultural and clinical beliefs and practices. This paper provides an overview of five key theme areas arising from Auckland-based ethnic-specific Pacific workshop data: language, family, tapu relationships, skills and organisation policy. Workshop participants comprised of Pacific mental health providers, Pacific consumers, family members of Pacific consumers and members of the Pacific community members. This paper purports that identifying the perceptions of different Pacific groups on ethnic-specific elements of cultural competencies are necessary to build and strengthen the capacity and capability of mental health services to provide culturally relevant services.

  19. On Tea Bowl from Jianzhan to Tenmoku: Material Culture and Intangible Culture in Cultural Diffusion

    Directory of Open Access Journals (Sweden)

    Jianping Guan

    2014-12-01

    Full Text Available According to precise and scientific literature that recorded, Chinese tea culture has a documented history of more than 1700 years. During which period, Yuan Dynasty was considered a crucial turning-point with great changes. The current tea culture in China is an adoption and innovation of Ming and Qing dynasty, especially in the form of processing technology. For those elements inherited from Tang and Song dynasties, however, they were more directly adopted systematically by Japan. Ever since powdered tea culture from Song dynasty was accepted in Japan, Jianzhan, the tea bowl that gained renowned reputation in the Song tea culture was also introduced and became tenmoku (tianmu after localization. As the transformation of Chinese tea culture ended in Japan, Japanese tea culture of wabi-cha was shaped after the tenmoku’s obvious decline in value. Jianzhan’s prosper, and tenmoku’s emergence and transition, all proved a definitive impact from intangible culture.

  20. Bridging Culture On-Line: Strategies for Teaching Cultural Sensitivity.

    Science.gov (United States)

    Wendler, M. Cecilia; Struthers, Roxanne

    2002-01-01

    An online cross-cultural health course for nurses sought to provide access to cultural experiences by culturally congruent use of a minority visiting scholar and required participation in cultural enrichment activities. Course and faculty evaluations were designed to be appropriate for the asynchronous environment. (Contains 25 references.) (SK)

  1. Cultural relativism and cultural diversity: implications for nursing practice.

    Science.gov (United States)

    Baker, C

    1997-09-01

    This article examines the doctrine of cultural relativism in nursing practice. To introduce the issue, an overview of the intellectual history of cultural relativism is presented. The academic themes of the debate surrounding cultural relativism are illustrated with an example of the social controversy in France involving cultural relativism as used to defend the practice of female genital excision among immigrant communities. The dilemma faced by nursing in making cross-cultural judgments is then examined in the light of the academic and social debates. The article concludes with a theoretical resolution of the issue of cultural relativism for nursing practice that is based on hermeneutic philosophy.

  2. Culture Analysis: The Interaction of Organizational and National Culture

    OpenAIRE

    Marina Arnoldovna Makarchenko

    2015-01-01

    The article is devoted to the interaction between organizational culture factors. A comparative analysis of the Russian and Argentine companies culture using different methods shows the impact of the national mentality in organizational culture. The thesis is the need to introduce the term "regional culture" in relation to modern Russia.

  3. Perbanyakan In Vitro Sansevieria Trifasciata ‘Lorentii': Regenerasi Tunas, Pengakaran, dan Aklimatisasi Planlet

    OpenAIRE

    Yusnita,; Wahyuningsih, Triani; Sulistiana, Puji; Hapsoro, Dwi

    2013-01-01

    This research aimed to study effects of benzyladenine (BA) on in vitro shoot formation and effects of indolebutyric acid(IBA) and acclimatization media on ex vitro rooting and acclimatization of Sansevieria trifasciata ‘Lorentii’. Leaf segmentswere taken from young fully-expanded leaves, surface sterilized and cultured on Murashige and Skoog (MS) basal mediumcontaining 0.25 mg L-1 2,4-dichlorophenoxyacetic acid (2,4-D) for 2 weeks, transferred to medium without growth regulatorfor 2 weeks, an...

  4. Cultural evolutionary theory: How culture evolves and why it matters.

    Science.gov (United States)

    Creanza, Nicole; Kolodny, Oren; Feldman, Marcus W

    2017-07-24

    Human cultural traits-behaviors, ideas, and technologies that can be learned from other individuals-can exhibit complex patterns of transmission and evolution, and researchers have developed theoretical models, both verbal and mathematical, to facilitate our understanding of these patterns. Many of the first quantitative models of cultural evolution were modified from existing concepts in theoretical population genetics because cultural evolution has many parallels with, as well as clear differences from, genetic evolution. Furthermore, cultural and genetic evolution can interact with one another and influence both transmission and selection. This interaction requires theoretical treatments of gene-culture coevolution and dual inheritance, in addition to purely cultural evolution. In addition, cultural evolutionary theory is a natural component of studies in demography, human ecology, and many other disciplines. Here, we review the core concepts in cultural evolutionary theory as they pertain to the extension of biology through culture, focusing on cultural evolutionary applications in population genetics, ecology, and demography. For each of these disciplines, we review the theoretical literature and highlight relevant empirical studies. We also discuss the societal implications of the study of cultural evolution and of the interactions of humans with one another and with their environment.

  5. Skipjack Tuna Availability for Purse Seine Fisheries Is Driven by Suitable Feeding Habitat Dynamics in the Atlantic and Indian Oceans

    Directory of Open Access Journals (Sweden)

    Jean-Noël Druon

    2017-10-01

    Full Text Available An Ecological Niche model was developed for skipjack tuna (Katsuwonus pelamis, SKJ in the Eastern Central Atlantic Ocean (AO and Western Indian Ocean (IO using an extensive set of presence data collected by the European purse seine fleet (1998–2014. Chlorophyll-a fronts were used as proxy for food availability while mixed layer depth, sea surface temperature, dissolved oxygen, salinity, current intensity, and height anomaly variables were selected to describe SKJ's abiotic environmental preferences. The resultant ecological niche included both mesoscale eddy-type productive features that displayed latitudinal range in the IO to large scale upwelling systems that shrink and swell seasonally in the AO. Overall, 83% of all free swimming school sets (FSC and 75% of drifting fish aggregating device sets (dFAD that contained SKJ occurred within 25 km of favorable feeding habitat. In the AO, 34% of dFAD sets were made more than 100 km away from this habitat, mostly in the surface chlorophyll-a poor environment of the Guinea Current. These distant sets represent 10% of dFAD sets in the IO and 8% of all FSC sets. Our results suggest that the Mozambique Channel in the IO, with its simultaneously favorable feeding and spawning conditions, may seasonally offer a better SKJ nursery habitat than the Guinea Current which shows a substantially poorer feeding capacity. With the exception of this latter area, our results also suggest that fishing accessibility will be higher in months where the size of the favorable feeding habitats are reduced, likely because this reduction drives a geographical contraction in SKJ populations. The observed relationship between the annual size of favorable feeding habitat and both annual catch rates and total catches in the IO is consistent with the near-full exploitation of this stock that has occurred since the 2000s. Moreover, it suggests that annual habitat size could be used as an indicator of growth capacity for this

  6. Making Safety Culture a Corporate Culture

    International Nuclear Information System (INIS)

    Svenningsson, J.

    2016-01-01

    Safety Culture is something that we have actively worked with in the nuclear industry for a long time. Formally, it has been on the agenda since the Chernobyl accident. However, the work with creating a safe organizational culture can of course be traced back even further in time. Over the years a lot has happened in how we are approaching the concept of safety culture and especially how we look upon the human being as a part of the system and how we as humans interact with the organization and technology. For an organization to have a culture that promotes safety it is essential to create an ownership of safety with all workers within the site. To create this ownership it is vital to have the undivided commitment of the management. It all starts with the fundamental values of the organization. These values must then be concluded in firm expectations of behaviors that apply to all workers and management. This could be referred to as expectation of a Professional Behavior that allows us to live up to the company values. At OKG nuclear power plant, a successful Business Improvement Program was recently carried out with intention to develop and contribute to the maturity of the organization in terms of safety. One of the sub-programs of the program was called Professional Behavior - With purpose of making safety into a corporate culture. At OKG, Safety culture is something that systematically been addressed and worked with since 2004. Even though the Safety Culture program could be considered to already have reached a certain level of maturity the Business Improvement program helped the organization to lay the foundation for further development by clarify expected behaviors that was firmly cemented in to the corporate values.

  7. Creating Cultural Consumers: The Dynamics of Cultural Capital Acquisition

    Science.gov (United States)

    Kisida, Brian; Greene, Jay P.; Bowen, Daniel H.

    2014-01-01

    The theories of cultural reproduction and cultural mobility have largely shaped the study of the effects of cultural capital on academic outcomes. Missing in this debate has been a rigorous examination of how children actually acquire cultural capital when it is not provided by their families. Drawing on data from a large-scale experimental study…

  8. Mediating production and consumption: cultural capital and 'cultural workers'.

    Science.gov (United States)

    Wright, David

    2005-03-01

    This paper examines recent debates about the role of what Bourdieu termed cultural intermediaries in the formation and reproduction of the relations of cultural capital. Workers in the cultural or creative industries were given a central place in Bourdieu's schema in the creation of hierarchies of value in the production and consumption of symbolic goods. Subsequent writers about the apparent emergence of a creative economy (Lash and Urry 1994; Featherstone 1991) have given workers involved in the production and distribution of cultural goods a pivotal place in the development of late or post-modernity. More recent work (Negus 2002; Nixon and du Gay 2002) has criticized the validity and coherence of the term as it has come to be understood and called for more rigour in its definition and use. This paper adds to this debate by considering the book trade as a space in which the gap between production and consumption of cultural goods is mediated. It suggests that cultural intermediaries, as cultural workers, are engaged in the reproduction of the cultural aspects of social class by 'shoring up' their insecure position in the relations of cultural capital, rather than simply being the taste leaders of a reflexive modernity.

  9. Forensic culture as epistemic culture: the sociology of forensic science.

    Science.gov (United States)

    Cole, Simon A

    2013-03-01

    This paper explores whether we can interpret the notion of 'forensic culture' as something akin to what Knorr-Cetina called an 'epistemic culture'. Can we speak of a 'forensic culture', and, if so, how is it similar to, or different from, other epistemic cultures that exist in what is conventionally called 'science'? This question has important policy implications given the National Academy Science's (NAS) recent identification of 'culture' as one of the problems at the root of what it identified as 'serious deficiencies' in U.S. forensic science and 'scientific culture' as an antidote to those problems. Finding the NAS's characterisation of 'scientific culture' overly general and naïve, this paper offers a preliminary exploration of what might be called a 'forensic culture'. Specifically, the paper explores the way in which few of the empirical findings accumulated by sociologists of science about research science seem to apply to forensic science. Instead, forensic science seems to have developed a distinct culture for which a sociological analysis will require new explanatory tools. Faithful sociological analysis of 'forensic culture' will be a necessary prerequisite for the kind of culture change prescribed by external reformist bodies like the NAS. Copyright © 2012. Published by Elsevier Ltd.

  10. Culture Three Ways: Culture and Subcultures Within Countries.

    Science.gov (United States)

    Oyserman, Daphna

    2017-01-03

    Culture can be thought of as a set of everyday practices and a core theme-individualism, collectivism, or honor-as well as the capacity to understand each of these themes. In one's own culture, it is easy to fail to see that a cultural lens exists and instead to think that there is no lens at all, only reality. Hence, studying culture requires stepping out of it. There are two main methods to do so: The first involves using between-group comparisons to highlight differences and the second involves using experimental methods to test the consequences of disruption to implicit cultural frames. These methods highlight three ways that culture organizes experience: (a) It shields reflexive processing by making everyday life feel predictable, (b) it scaffolds which cognitive procedure (connect, separate, or order) will be the default in ambiguous situations, and (c) it facilitates situation-specific accessibility of alternate cognitive procedures. Modern societal social-demographic trends reduce predictability and increase collectivism and honor-based go-to cognitive procedures.

  11. Hunting Sea Mines with UUV-Based Magnetic and Electro-Optic Sensors

    Science.gov (United States)

    2010-06-01

    assembly of four 3-axis fluxgate magnetometers and (c) magnetometer package for underwater deployment in flooded body section. data are automatically...features the Real-time Tracking Gradiometer (RTG), which is a multi-channel tensor gradiometer using conventional fluxgate technology. Also in this...integrated together into a Bluefin12 AUV [5]. A. RTG Sensor Technology The RTG is a multi-channel tensor gradiometer using conventional fluxgate

  12. Within- and between-culture variation: individual differences and the cultural logics of honor, face, and dignity cultures.

    Science.gov (United States)

    Leung, Angela K-Y; Cohen, Dov

    2011-03-01

    The CuPS (Culture × Person × Situation) approach attempts to jointly consider culture and individual differences, without treating either as noise and without reducing one to the other. Culture is important because it helps define psychological situations and create meaningful clusters of behavior according to particular logics. Individual differences are important because individuals vary in the extent to which they endorse or reject a culture's ideals. Further, because different cultures are organized by different logics, individual differences mean something different in each. Central to these studies are concepts of honor-related violence and individual worth as being inalienable versus socially conferred. We illustrate our argument with 2 experiments involving participants from honor, face, and dignity cultures. The studies showed that the same "type" of person who was most helpful, honest, and likely to behave with integrity in one culture was the "type" of person least likely to do so in another culture. We discuss how CuPS can provide a rudimentary but integrated approach to understanding both within- and between-culture variation. (c) 2011 APA, all rights reserved

  13. Driving Cultures: Cars, Young People and Cultural Research

    Directory of Open Access Journals (Sweden)

    Sarah Redshaw

    2011-11-01

    Full Text Available This article describes the Driving Cultures research, the cultural importance of the car and the psychological approaches central to research in the field of road safety and investigations of the over–representation of young people in crashes. The aim of the article is to outline driving as a cultural practice drawing on the experiences of young people as described in focus groups in order to show how cultural research can contribute to a social concern such as traffic injury and death.

  14. Exploration of Food Culture in Kisumu: A Socio-Cultural Perspective

    Directory of Open Access Journals (Sweden)

    Fredrick Argwenge Odede

    2017-07-01

    Full Text Available Increasingly food culture in the context of socio-cultural dimension is becoming important for sustainable urban development. In the last four years food festivals have been held in Kisumu attracting several interests both from within and without the City. The Kisumu fish night event of 2013 marked the melting point of food culture in Kisumu. This paper thus explores the noble intention of integrating food culture in Kisumu as a socio-cultural capital for the advancement of City sustainable development agenda. To an agrarian society, life is about food from its production, the processing/preservation up to the consumption or the sharing. People connect to their cultural or ethnic background through similar food patterns.  People from different cultural backgrounds eat different foods leading to the question: Are Luos in Kisumu defined by their own food culture? This study further investigated the mode of production, and storage of food resources, examined food cuisines of the Luo community in Kisumu, and assessed the food habits, practices and beliefs associated with food cuisines, as well as, the nutritional and socio-cultural values of Luo cuisines. The research employed qualitative methods of data collection such as interviews, observation, focused group discussion and photography using purposive and snowball sampling technique. Content analysis was used to draw general universal statements in thematic areas with respect to the research objectives. The study revealed that Luo community in Kisumu has a food culture laced with rich cultural practices, rituals and societal norms that defines them as a distinct cultural identity but interacts with other cultural groups in the metropolitan city of Kisumu. Further, the study confirms that indeed food culture is vital for sustainable development of urban centre granted that Kisumu largely evolved as urban centre for exchange of goods for food.

  15. Cultural Studies and Sociology of Culture in Germany: Relations and Interrelations

    Directory of Open Access Journals (Sweden)

    Udo Göttlich

    2013-06-01

    Full Text Available Over the last three decades, attitudes towards cultural studies in Germany have developed within contexts of contact and conflict with a variety of disciplines, e.g. ethnology, anthropology, sociology, as well as the sociology of culture, liter-ary studies and Kulturwissenschaft(en. On the one hand there is a strong academ-ic interest in how cultural studies perceives and analyzes media culture, popular culture and everyday life. On the other hand boundaries with humanities and so-cial science remain, which leads to criticism and conflicts with cultural studies and its achievements.I will discuss some of the problems concerning the perception and reception of cultural studies among representatives of Kulturwissenschaft(en and sociology of culture. Furthermore I will draw on the role of cultural studies in thematizing cul-tural change and conflicts, and its ability to do so in a way that shows the im-portance of culture and politics.

  16. Film Cross-culture Research under the Perspective of Language and Culture

    Institute of Scientific and Technical Information of China (English)

    罗淞译

    2015-01-01

    Language as an important tool of cultural transmission, it can achieve the cross-culture development of film. With the strength of globalization, film cross-culture communication are increasing, and how to enhance the communication of film through language and culture and let more people enjoy the thought expressed in film is one of the most important content for cross-culture development of mant films. Different cultural backgrounds will produce large diversities in watching a same film, so it is helpful for the cross-culture development of film when making good use of culture and language, on the contrary, it will become a hindrance. This article do research on cross-culture development of film under the perspective of language and culture to find out the existing problems in present cross-culture development of film and put forward effective resolution strategy in order to promote certain reference for the internationalization of China’s film industry.

  17. CORPORATE CULTURE AS A TOOL TO IMPROVE SAFETY CULTURE

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    Erika SUJOVÁ

    2013-07-01

    Full Text Available The aim of the article is to explain interconnectivity between corporate culture and safety culture, which aim to utilize motivation to prevent work accidents and other unwanted events in an enterprise. The article deals with ways how to improve approaches to Occupational Health & Safety, OH&S, at work place through proper direction of corporate culture. It introduces internal and external determinants of corporate culture, which have a significant effect. The article introduces common features of corporate culture and safety culture as an element of the OH&S management system with emphasis on system effectiveness. The final portion of the article presents the hierarchy of needs model, which may serve as a basis motivating employees to follow safety and health rules at work place.

  18. Competencia cultural e inteligencia cultural. Aportes a la mediación cultural docente

    Directory of Open Access Journals (Sweden)

    Maurizia D'Antoni

    2011-01-01

    Full Text Available El ensayo nace como parte de una investigación mayor que se publicará sobre la inserción profesional docente en la Universidad de Costa Rica. Su finalidad en la investigación en curso es la de explorar los aportes de los estudios sobre competencia cultural e inteligencia cultural, para identificar planteamientos teóricos que fortalezcan nuevos espacios para la mediación cultural docente en la Universidad. Se concluye que el concepto de competencia cultural representa un aporte importante, si se revisa la idea de cultura que subyace y se le transforma en "competencia intercultural". Luego, se define mediación cultural, evidenciándose la importancia de la nueva figura profesional en el contexto actual, los ámbitos de acción donde se ha empleado y se manifiesta la necesidad de promover mediadores y mediadoras culturales en Costa Rica también.

  19. Human nature, human culture: the case of cultural evolution.

    Science.gov (United States)

    Lewens, Tim

    2017-10-06

    In recent years, far from arguing that evolutionary approaches to our own species permit us to describe the fundamental character of human nature, a prominent group of cultural evolutionary theorists has instead argued that the very idea of 'human nature' is one we should reject. It makes no sense, they argue, to speak of human nature in opposition to human culture. The very same sceptical arguments have also led some thinkers-usually from social anthropology-to dismiss the intimately related idea that we can talk of human culture in opposition to human nature. How, then, are we supposed to understand the cultural evolutionary project itself, whose proponents seem to deny the distinction between human nature and human culture, while simultaneously relying on a closely allied distinction between 'genetic' (or sometimes 'organic') evolution and 'cultural' evolution? This paper defends the cultural evolutionary project against the charge that, in refusing to endorse the concept of human nature, it has inadvertently sabotaged itself.

  20. Improving the Utility of the CATs Video Cam and Tri-axial Accelerometer for Examining Foraging in Top Marine Predators

    Science.gov (United States)

    2015-09-30

    accelerometers) attached to the tuna was tested in CFD environment with the Solidworks package under the experimental conditions as following...drag. Increment of the drag force associated with the attached tag was 16% for the simulated speed of swimming 8 m/s. The data obtained are...estimation of tag performance for the certain flow regime, i.e. tuna gliding at the constant speed. The size of the computational domain and, consequently