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Sample records for water pink shrimp

  1. Pink shrimp as an indicator for restoration of everglades ecosystems

    Science.gov (United States)

    Browder, Joan A.; Robblee, M.B.

    2009-01-01

    The pink shrimp, Farfantepenaeus duorarum, familiar to most Floridians as either food or bait shrimp, is ubiquitous in South Florida coastal and offshore waters and is proposed as an indicator for assessing restoration of South Florida's southern estuaries: Florida Bay, Biscayne Bay, and the mangrove estuaries of the lower southwest coast. Relationships between pink shrimp and salinity have been determined in both field and laboratory studies. Salinity is directly relevant to restoration because the salinity regimes of South Florida estuaries, critical nursery habitat for the pink shrimp, will be altered by changes in the quantity, timing, and distribution of freshwater inflow planned as part of the Comprehensive Everglades Restoration Project (CERP). Here we suggest performance measures based on pink shrimp density (number per square meter) in the estuaries and propose a restoration assessment and scoring scheme using these performance measures that can readily be communicated to managers, policy makers, and the interested public. The pink shrimp is an appropriate restoration indicator because of its ecological as well as its economic importance and also because scientific interest in pink shrimp in South Florida has produced a wealth of information about the species and relatively long time series of data on both juveniles in estuarine nursery habitats and adults on the fishing grounds. We suggest research needs for improving the pink shrimp performance measure.

  2. Bioaccumulation of animal adenoviruses in the pink shrimp

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    Roger B. Luz

    2015-09-01

    Full Text Available Adenoviruses are among the most promising viral markers of fecal contamination. They are frequently found in the water, sediment and soil of regions impacted by human activity. Studies of the bioaccumulation of enteric viruses in shrimp are scarce. The cities located in the northern coast of the lake systems in Southern Brazil have high urbanization and intensive farming rates, and poor sewage collection and treatment. One hundred (n = 100 Farfantepenaeus paulensis pink-shrimp specimens and 48 water samples were collected from coastal lagoons between June 2012 and May 2013. Water samples were concentrated and the shrimp, mashed. After DNA extraction, samples were analyzed by real time polymerase chain reaction (qPCR in order to detect and quantify viral genomes. Thirty-five percent of shrimp samples were positive for contamination, predominantly by avian adenoviruses. A total of 91.7% of water samples contained adenoviruses DNA, with the human form being the most frequent. Our results provided evidence of significant bioaccumulation of adenoviruses in shrimp, showing the extent of the impact of fecal pollution on aquatic ecosystems.

  3. [Reproduction of the pink shrimp Farfantepenaeus notialis (Decapoda: Penaeidae) in the Colombian Caribbean].

    Science.gov (United States)

    Paramo, Jorge; Pérez, Daniel; Wolff, Matthias

    2014-06-01

    The shallow water pink shrimp (Farfantepenaeus notialis) is among the socioeconomically most important resources of the Caribbean. The lack of biological and fishery information is of great concern for the fisheries management authorities. The presented study therefore aimed at the investigation of the reproductive cycle, the size composition and the size at first maturity of this species as a basis for the ordination and management of this resource. The study was conducted from June 2012 to May 2013 off the coast of the Caribbean Sea of Colombia. A total of 5 356 individuals were collected, identified, classified and preserved for their subsequent analysis in the laboratory. Size, weight, sex and gonad stage were recorded for each specimen. Significant differences were found in sex ratio in all months sampled with a clear predominance of females. Mature females were found year-around, but two reproductive peaks were identified during the periods October-December and April-June. The mean catch total length size (MCS) for females and males was 148.00mm and 122.54mm, respectively. The mean size at maturity (LT50%) was 129.34mm for females and 97.77mm for males. MCS was always above LT50% for both sexes. Considering the large reduction in fishing effort in the Colombian Caribbean Sea over the last years, we could expect that the shrimp population is in a rebuilding process or perhaps it may be already restored.

  4. Maturity stages of Pink Shrimp Farfantepenaeus notialis (Penaeidae) in the Colombian Caribbean

    International Nuclear Information System (INIS)

    Perez Ferro, Daniel Giovanny; Paramo Granados, Jorge Enrique

    2014-01-01

    The pink Shrimp Farfantepenaeus notialis is one resource of great socioeconomic importance in the Caribbean region. However, this species has been overexploited in the last decades and there is a lack of biological and fishery information. For such reason, the objective of the present study is to determine and characterize the maturity stages a macroscopic and microscopic level of the pink Shrimp (F. notialis) as input for its management. The samples were taking from June of 2012 and May 2013, on board shrimp commercial vessels in the Colombian Caribbean. The females of F. notialis were identified and preserved for the histologic analysis and some gonads were fixed. Data of size, weight and sex were taken. The gonadal stages were determined from the morphology and coloration of gonad and to microscopic determination were carried out histologic cut from samples of thirty gonads from all stages. A total of 3019 females were obtained from F. notialis, to which five stages of gonadal development were found and described. The macroscopic results were corroborated with the analysis ovocyte development a microscopic level. The development of ovocyte was coherent to that reported for F. brevirostris in the Colombian pacific and F. paulensis in the north coast of Brazil. These results are a contribution of the great scientific importance to the determination of maturity of F. notialis in the Colombian Caribbean.

  5. Chronic effects of nitrogenous compounds on survival and growth of juvenile pink shrimp

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    W. J. Wasielesky

    Full Text Available Abstract In response to growing worldwide market demand, intensive shrimp farming, based on high feed, has developed over the past decade. The nitrogenous compounds mainly generated by animal excretion can cause deterioration of water quality and produce chronic or even acute toxicity to aquatic animals. As prevention, theoretical safety levels have been estimated from acute toxicity tests and they are traditionally used to prevent toxic effects on biota. However, are those concentrations of nitrogenous compounds really safe to Farfantepenaeus paulensis? The current study aimed to investigate the lethal and sublethal effects of ammonia, nitrite and nitrate to juvenile F. paulensis based on safety levels. Each experiment was performed independently in 100 L tanks for 30 days. The survival rates and wet weight of all shrimps were recorded every 10 days. The concentrations tested for ammonia, nitrite and nitrate were respectively: treatment “T1/4”, a quarter of the safety level (0.91 mg/L TA-N, 2.55 mg/L NO2--N and 80.7 mg/L NO3--N; treatment “TSL”, the safety level (3.65 mg/L TA-N, 10.2 mg/L NO2--N and 323 mg/L NO3--N; and treatment “T2X”, twice the safety level (7.30 mg/L TA-N, 20.4 mg/L NO2--N and 646 mg/L NO3--N. For F. paulensis cultivation, the real safety level for nitrite was estimated to be 2.55 mg/L NO2--N. For ammonia and nitrate, the recommended concentrations were <0.91 mg/L TA-N corresponding to 0.045 mg/L NH3-N and <80.7 mg/L NO3--N, respectively.

  6. Chronic effects of nitrogenous compounds on survival and growth of juvenile pink shrimp.

    Science.gov (United States)

    Wasielesky, W J; Poersch, L H; Martins, T G; Miranda-Filho, K C

    2017-01-01

    In response to growing worldwide market demand, intensive shrimp farming, based on high feed, has developed over the past decade. The nitrogenous compounds mainly generated by animal excretion can cause deterioration of water quality and produce chronic or even acute toxicity to aquatic animals. As prevention, theoretical safety levels have been estimated from acute toxicity tests and they are traditionally used to prevent toxic effects on biota. However, are those concentrations of nitrogenous compounds really safe to Farfantepenaeus paulensis? The current study aimed to investigate the lethal and sublethal effects of ammonia, nitrite and nitrate to juvenile F. paulensis based on safety levels. Each experiment was performed independently in 100 L tanks for 30 days. The survival rates and wet weight of all shrimps were recorded every 10 days. The concentrations tested for ammonia, nitrite and nitrate were respectively: treatment "T1/4", a quarter of the safety level (0.91 mg/L TA-N, 2.55 mg/L NO2--N and 80.7 mg/L NO3--N); treatment "TSL", the safety level (3.65 mg/L TA-N, 10.2 mg/L NO2--N and 323 mg/L NO3--N); and treatment "T2X", twice the safety level (7.30 mg/L TA-N, 20.4 mg/L NO2--N and 646 mg/L NO3--N). For F. paulensis cultivation, the real safety level for nitrite was estimated to be 2.55 mg/L NO2--N. For ammonia and nitrate, the recommended concentrations were <0.91 mg/L TA-N corresponding to 0.045 mg/L NH3-N and <80.7 mg/L NO3--N, respectively.

  7. Distribution pattern of juveniles of the pink shrimps Farfantepenaeus brasiliensis (Latreille, 1817 and F. paulensis (Pérez-Farfante, 1967 on the southeastern Brazilian coast

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    Rogério Caetano da Costa

    Full Text Available Abstract The spatio-temporal distribution of juveniles of the pink shrimps Farfantepenaeus brasiliensis (Latreille, 1817 and Farfantepenaeus paulensis (Pérez-Farfante, 1967 in the Ubatuba region (SP was investigated. Sampling was performed in the bays of Ubatumirim (UBM, Ubatuba (UBA and Mar Virado (MV. A total of 2,018 F. brasiliensis and F. paulensis were collected. The largest catch of juveniles of both species occurred in UBA (N = 867, followed by UBM (N = 729 and MV (N= 422. The bottom sediment in MV had the highest silt and clay content, which explains the negative correlation of the substrate with the abundance of both species. Temperature was positively correlated with the abundance of both species. Juveniles were highly abundant in shallower areas in the summer of 1998. The high rainfall in this El Niño period may have lowered the salinity in estuarine waters and led the shrimps to move to coastal areas in search of higher salinities such as in bays. With this unusually early reduction in salinity, individuals migrated to the bay before the closed season began and thus became more exposed to fishing. We confirmed that monitoring environmental variations, especially in El Niño years, is essential for understanding the distribution patterns of juveniles of both species.

  8. Assessment of trophic transfer of benzo(a)pyrene genotoxicity from the post-larval pink shrimp F. brasiliensis to the juvenile Florida pompano T. carolinus.

    Science.gov (United States)

    Rocha, Arthur José da Silva; Santos, Thaís Cruz Alves; Gomes, Vicente; Bícego, Márcia Caruso; Barbosa, Ana Cecília Rizzatti de Albergaria; Passos, Maria José de Arruda Campos Rocha; Hasue, Fabio Matsu; Van Ngan, Phan

    2012-11-01

    In the present study, the polycyclic aromatic hydrocarbon (PAH) genotoxicity was investigated in a one-step predator-prey relationship with the trophic-related marine species. Florida pompanos were fed for 5 and 10 days with pink shrimp post larvae previously exposed to benzo(a)pyrene (BaP) concentrations. Parent BaP body burden was measured in samples of Farfantepenaeus brasiliensis. BaP metabolites were determined in bile samples of Trachinotus carolinus and DNA damage was assessed through the comet and erythrocyte nuclear abnormalities (ENAs) assays in fish erythrocytes. BaP body burden increased significantly with the PAH concentration in pink shrimp PLs as well as the fish bile BaP metabolites. Both, comet and ENAs assays indicated significant increase on erythrocyte DNA damage of Florida pompanos fed with BaP-exposed pink shrimp on both feeding periods. The trophic route of BaP genotoxicity is discussed as well as the PAH biotransformation as the inducing mechanism for the DNA damages observed. Copyright © 2012 Elsevier B.V. All rights reserved.

  9. A resource management scenario for traditional and scientific management of pink shrimp (Farfantepenaeus paulensis) in the Patos Lagoon estuary (RS), Brazil.

    Science.gov (United States)

    Moura, Gustavo Goulart Moreira; Kalikoski, Daniela Coswig; Diegues, Antonio Carlos Sant'Ana

    2013-01-11

    This article aims to discuss the incorporation of traditional time in the construction of a management scenario for pink shrimp in the Patos Lagoon estuary (RS), Brazil. To meet this objective, two procedures have been adopted; one at a conceptual level and another at a methodological level. At the conceptual level, the concept of traditional time as a form of traditional ecological knowledge (TEK) was adopted. At the methodological level, we conduct a wide literature review of the scientific knowledge (SK) that guides recommendations for pink shrimp management by restricting the fishing season in the Patos Lagoon estuary; in addition, we review the ethno-scientific literature which describes traditional calendars as a management base for artisanal fishers in the Patos Lagoon estuary. Results demonstrate that TEK and SK describe similar estuarine biological processes, but are incommensurable at a resource management level. On the other hand, the construction of a "management scenario" for pink shrimp is possible through the development of "criteria for hierarchies of validity" which arise from a productive dialog between SK and TEK. The commensurable and the incommensurable levels reveal different basis of time-space perceptions between traditional ecological knowledge and scientific knowledge. Despite incommensurability at the management level, it is possible to establish guidelines for the construction of "management scenarios" and to support a co-management process.

  10. Maturity Stages of Pink Shrimp Farfantepenaeus notialis (Penaeidae in the Colombian Caribbean

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    Daniel Giovanny Pérez Ferro

    2014-05-01

    shrimp commercial vessels in the Colombian Caribbean. The females of F. notialiswere identified and preserved for the histologic analysis and some gonads were fixed. Data of size, weight and sex were taken. The gonadal stages were determined from the morphology and coloration of gonad and to microscopic determination were carried out histologic cut from samples of thirty gonads from all stages. A total of 3019 females were obtained from F. notialis, to which five stages of gonadal development    ESTADIOS DE MADUREZ DEL CAMARÓN ROSADO Farfantepenaeus notialis (PENAEIDAE EN EL CARIBE COLOMBIANO

  11. Enzyme-assisted peeling of cold water shrimps (Pandalus borealis)

    DEFF Research Database (Denmark)

    Dang, Tem Thi; Gringer, Nina; Jessen, Flemming

    2018-01-01

    An enzymatic method to facilitate the peeling of cold water shrimps (Pandalus borealis) was developed. The protease solutions were used to mature the shrimps to promote shell-loosening prior to peeling. The efficiency of peeling enzyme-treated shrimps was evaluated by a new quantitative measurement......L and 0.25% Exocut-A0 for 20 h resulted in the best peeling of shrimps (100% completely peeled shrimps, 3 mJ/g work and 89% meat yield). Reuse of the enzyme solution was possible due to a 95% retention rate of proteolytic activity after two 20-h cycles of maturation. The studied enzymatic maturation...... of shrimp. This approach would benefit the shrimp processing industry by 1) enhancing peeling efficiency that includes least efforts to remove the shell, high rate of completely peeled shrimps and high meat yield; 2) shortening the duration of maturation but still sufficiently loosening the shell...

  12. Shrimp aquaculture in low salinity water feeded with worm flavor

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    Wenceslao Valenzuela Quiñónez

    2012-09-01

    Full Text Available Shrimp aquaculture in Sinaloa is one of the top economic enterprises, generating many jobs and earns significant incomes every year. Shrimp feed is an essential part of maintaining healthy production. In this initial approach of shrimp growth in low salinity water, were tested two formulas of animal protein composed of 40% (APL1 and 20% (APL2 worm protein, a commercial diet, and no supplementary feed. Physicochemical parameters did not have a direct influence in shrimpbehavior. After six weeks of experimentation, shrimp fed with commercial diet had a weight gain 20% higher than those feed with worm protein. There were no significantly differences between sizes with respect to 40% animal protein and 20% animal protein with the commercial diet (P  0.05. However, shrimp fed worm protein had lower mortality. The use of worm protein could be an option to maintain a high quantity of shrimp reared in low salinity waters.

  13. Habitat selection of the pink shrimp Farfantepenaeus paulensis and the blue crab Callinectes sapidus in an estuary in southern Brazil: influence of salinity and submerged seagrass meadows

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    Vinicius Mendes Ruas

    Full Text Available This study was conducted in two estuarine inlets (Saco da Mangueira and Saco do Arraial at the Patos Lagoon estuary, southern Brazil. The changes in relative abundance and size of post-larvae and juvenile shrimp Farfantepenaeus paulensis and juvenile blue crab Callinectes sapidus were compared, considering the influence of salinity and the presence of submerged seagrass meadows. The analyses were performed using generalized linear models (GLM for abundance variations and ANOVA for variations on the size of individuals. The pink shrimp was more abundant at Saco da Mangueira, in seagrass meadows and areas of higher salinity. The blue crab was more abundant at Saco do Arraial and in lower levels of salinity. The importance of submerged vegetation for the blue crab lies in a preference of smaller crabs of the species for the seagrass meadows. It has been shown that these species choose different habitats in the estuary, and both the salinity and the presence of submerged seagrass meadows influence the selection of habitat.

  14. Ozone Disinfection of Vibrio vulnificus in Shrimp Pond Water

    Science.gov (United States)

    Dyah Pita Rengga, Wara; Cahya Julyta Putri, Echa; Wulansarie, Ria; Suryanto, Agus

    2018-03-01

    One variety of shrimp, L.Vanamei, often uses brackish water during the operation in the shrimp pond. Chlorination and ultraviolet are usually used for disinfection of brackish water. However, it is ineffective and forms sediment in the water distribution. It can be a negative impact on the water quality cause a contamination on the shrimp, so the farmers might have loss of profit because Vibrio vulnificus causes infection and dead on the shrimp. It affects the safety of consumers and should be minimized. The purpose of this study is to reduce the number of V. vulnificus bacteria in the pond water. The water was put in the storage tanks then pumped to filter out the impurities of the water. Furthermore, the water set the flow rate in 1 LPM, 2 LPM, and 3 LPM. After that, the ozone was injected to the water flow to sterilize the V. vulnificus bacteria. Finally, the water was returned to the original tank. The water from the tank was taken through a valve and analyzed in 0, 3, 7, 12, 18, 24, 30 minutes. The sample was analyzed immediately using a Total Plate Count method to determine the number of V. vulnificus bacteria in the shrimp pond water. The flow rate shows that the longer time of ozone made a lower amount of Vibrio v. bacteria. In 2 LPM water, it shows the optimum results of V. vulnificus. bacteria reduction for 88.1% compared to the flow rate of 1 LPM and 3 LPM with the bacteria reduction of 68,8% and 70.6%. This study shows that the ozone with a flow rate of 2 LPM circulation is the most effective method to help reducing the number of V. vulnificus in brackish water distribution system in the shrimp environment and potentially as a disinfectant.

  15. Efeito do processamento sobre os níveis de colesterol e 7-cetocolesterol em camarão-rosa Effects of processing on free cholesterol and 7-ketocholesterol concentrations in pink-shrimp

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    Andréa Figueiredo Procópio de Moura

    2002-08-01

    has been used as a "tracer" of the degree of cholesterol oxidation, due to its fast and continuous formation and thus relatively high amounts with respect to the other oxidation products. The objective of this work was to evaluate the effects of boiling and deep-frying on the cholesterol oxidation in pink-shrimp (Penaeus brasiliensis and Penaeus paulensis. Cooking of pink-shrimp, in general, decreased both free cholesterol and 7-ketocholesterol concentrations. Such decrease was higher after frying than after boiling and was more pronounced for 7-ketocholesterol. While the cholesterol concentrations were 10.7 and 24.7% lower, the decrease of 7-ketocholesterol concentrations was 41.5 and 61% in boiled and fried shrimp, respectively. The reduction of free cholesterol and 7-ketocholesterol concentrations in processed pink-shrimp was related to elution of these compounds by the cooking medium, i.e. water in boiling and oil in frying.

  16. Ten-year variations in population structure of pink-shrimp in a southwestern Atlantic Bay affected by highway construction

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    Felipe Freitas Jr

    2011-12-01

    Full Text Available OBJECTIVES: Population structures of Farfantepenaeus brasiliensis and F. paulensis, consisting mainly of juveniles, were evaluated during the construction of an expressway along a mangrove area. Estuarine regions in southern Brazil function as sites for reproduction, nursery and growth of a variety of organisms, including two of the most important species of shrimp for fisheries in the southwestern Atlantic. Shrimps were collected in Saco dos Limões creek, Baía-Sul, Florianópolis, State of Santa Catarina, four times a year, by day and night, between 1997 and 2006. Fluctuations in the abundances of shrimp appear to be related to their life cycles, with largest abundances in Summer and Spring, rather than to impacts promoted by dredging activities during the expressway construction.OBJETIVOS: A estrutura populacional de Farfantepenaeus brasiliensis e F. paulensis, consistindo principalmente de juvenis, foi avaliada durante a construção de uma via expressa ao longo de uma área de manguezais. Regiões estuarinas do sul do Brasil funcionam como locais de reprodução, berçários e de crescimento de uma variedade de organismos, incluindo duas das mais importantes espécies de camarões comerciais do Atlântico Sul Ocidental. Camarões foram coletados no Saco dos Limões, Baía Sul, Florianópolis, Estado de Santa Catarina, trimestralmente, de dia e de noite, entre 1997 e 2006. Flutuações em abundâncias de camarões podem estar relacionados aos seus ciclos de vida, com as maiores abundâncias no verão e primavera, ao invés de impactos promovidos pelas atividades de dragagem durante a construção da via expressa.

  17. Water quality management in shrimp aquaculture ponds using remote water quality logging system

    Digital Repository Service at National Institute of Oceanography (India)

    Sreepada, R.A.; Kulkarni, S.; Suryavanshi, U.; Ingole, B.S.; Drensgstig, A.; Braaten, B.

    Currently an institutional co-operation project funded by NORAD is evaluating different environmental management strategies for sustainable aquaculture in India. A brief description of a remote water quality logging system installed in shrimp ponds...

  18. Pink-Beam, Highly-Accurate Compact Water Cooled Slits

    International Nuclear Information System (INIS)

    Lyndaker, Aaron; Deyhim, Alex; Jayne, Richard; Waterman, Dave; Caletka, Dave; Steadman, Paul; Dhesi, Sarnjeet

    2007-01-01

    Advanced Design Consulting, Inc. (ADC) has designed accurate compact slits for applications where high precision is required. The system consists of vertical and horizontal slit mechanisms, a vacuum vessel which houses them, water cooling lines with vacuum guards connected to the individual blades, stepper motors with linear encoders, limit (home position) switches and electrical connections including internal wiring for a drain current measurement system. The total slit size is adjustable from 0 to 15 mm both vertically and horizontally. Each of the four blades are individually controlled and motorized. In this paper, a summary of the design and Finite Element Analysis of the system are presented

  19. Identification of pink-pigmented bacteria isolated from environmental water samples and their biofilm formation abilities.

    Science.gov (United States)

    Furuhata, Katsunori; Kato, Yuko; Goto, Keiichi; Saitou, Keiko; Sugiyama, Jun-Ichi; Hara, Motonobu; Fukuyama, Masahumi

    2008-06-01

    Sixty-seven strains of pink-pigmented bacteria, which were isolated from environmental water samples collected nationwide, were identified by partial 16S rDNA sequence analysis. In addition, the biofilm formation ability of the isolates was experimentally investigated. We could identify only 2 strains at the species level: Pedobacter roseus HS-38 and Runella slithyformis HS-77. The results showed that of the strains tested, 22 strains (32.8%) were Pedobacter spp., which was most frequently identified, followed by 19 strains (28.4%) of Arcicella spp., 16 strains (23.9%) of Deinococcus spp., 5 strains (7.5%) of Roseomonas spp., 4 strains (6.0%) of Flectobacillus spp. and 1 strain (1.5%) of Runella sp. Most isolates showed low similarity values to previously known species, and they were found to be novel species. At a result, it was difficult to identify environmental water-derived pink-pigmented bacteria at the species level. On the other hand, when we measured the absorbance by the crystal violet staining to examine the quantities of biofilm formation of these strains, fifty-five (82.0%) of the 67 isolates formed biofilm. The absorbance of Deinococcus sp. HS-75 was the highest (3.56). When comparing the absorbance values among the genera, Roseomonas spp. showed the highest absorbance (mean:1.62), followed by Deinococcus spp. (mean: 1.03), and Arcicella spp. (mean: 1.01). Strains of Flectobacillus spp. (mean: 0.48) and Pedobacter spp. (mean: 0.42) showed lower absorbance values. As above, it was shown that, at the species level, the pink-pigmented bacteria in the water in the Japanese environment had various levels of ability to form biofilm.

  20. Financial Feasibility of Green-water Shrimp Farming Associated with Mangrove Compared to Extensive Shrimp Culture in the Mahakam Delta, Indonesia

    NARCIS (Netherlands)

    Bosma, R.H.; Tendencia, E.A.; Bunting, S.W.

    2012-01-01

    This paper presents a post-hoc assessment of the introduction of intensive shrimp farming strategies, with and without green-water (GW) technology, in the Mahakam Delta where extensive systems (ES) dominate. The study also assesses the potential of integrated mangrove GW shrimp production (MGW). The

  1. Water and bottom sediments quality of brackish water shrimp farms in Kaliganj Upazila, Satkhira, Bangladesh

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    Mohammed Aktaruzzaman, Mohammed Shakhaoat Hossain, Abu Naieum Muhammad Fakhruddin, Mohammed Jamal Uddin, Syed Hafizur Rahman

    2013-05-01

    Full Text Available Shrimp culture plays a central part in the fisheries sector of Bangladesh that leads to a significant change in the structure and composition of frozen food export sector. An investigation was carried out to determine physiochemical parameters, nutrients content, bacterial contamination and metal content in shrimp “Gher” (Farms water and sediments. Physicochemical parameters were analyzed in situ by portable meters. Ammonia, phosphate, bacterial counts, and metals contents were analyzed by Nesslerization, colorimetric and standard microbiological methods and Atomic Absorption Spectrophotometery (AAS, respectively. Except Dissolve oxygen and temperature all other physiochemical parameters were unsuitable for shrimp culture. The concentration of ammonia was 0.384 to 1.5 mg L-1 and the concentration of phosphate ranged from 0.02 to 0.818 mg L-1. In bacteriological analysis, highest levels of coliform were found in the tested samples and total colifom count reached up to 2.04x103 cfu mL-1. Among the tested metals, Cr was highest in water and sediment samples. Concentration of Cr ranged from 0.150 to 0.807 mg L-1 and 1.957 to 3.436 mg kg-1 in water and sediment samples, respectively. A significant difference was observed for the concentration of metals in sediment and water samples. The high concentration of nutrients and metals in shrimp “Gher” water and sediment as well as the presence of pathogenic bacteria in the “Gher” and river water indicated unhygienic environment and the sources of contamination of shrimp “Gher”.

  2. Spawning period and first maturity size of deep water rose shrimp ...

    African Journals Online (AJOL)

    Administrator

    2011-11-02

    Nov 2, 2011 ... index (GSI), ranged throughout the year, reaching its peak two times; first peak occurred in autumn ... The deep water rose shrimp, Parapenaeus longirostris .... macroscopic examination of the gonads (development and.

  3. Northern Shrimp (Pandalus borealis) Recruitment in West Greenland Waters

    DEFF Research Database (Denmark)

    Pedersen, S. A.; Storm, L. M.

    2002-01-01

    Lipid class and fatty acid compositions were determined in shrimp larvae (Pandalus borealis and P. montagui) collected along transects across banks on the West Greenland shelf in June 1999, May and July 2000. The lipid class contents were investigated as indices of larval shrimp lipid condition a...

  4. Density and white shrimp growth pattern (penaeus merguiensis) in kampung nipah waters of perbaungan north sumatera

    Science.gov (United States)

    Natalia Silaen, Sri; Budi Mulya, Miswar

    2018-03-01

    The purpose of the study was to determine the density and pattern of growth of white shrimp (Penaeus merguiensis)of the village Nipah waters. The data collection was conducted by sampling using nets and fishing gear “Langge” (a tool) to determine the density of the three observation stations. The result showed that the distribution of white shrimp in the waters of the estuary and surrounding degraded over the past ten years. The highest density at station II is 0.56 and 5/m2 and at least at the third station as much as 0.42 and 6/m2 The correlation between the density of shrimp with depth as well as the fraction of the base substrate showed that only the depth of the waters who has any significant correlation with the density of shrimp, although the closeness of the relationship is small.

  5. Tangential flow ultrafiltration for detection of white spot syndrome virus (WSSV) in shrimp pond water.

    Science.gov (United States)

    Alavandi, S V; Ananda Bharathi, R; Satheesh Kumar, S; Dineshkumar, N; Saravanakumar, C; Joseph Sahaya Rajan, J

    2015-06-15

    Water represents the most important component in the white spot syndrome virus (WSSV) transmission pathway in aquaculture, yet there is very little information. Detection of viruses in water is a challenge, since their counts will often be too low to be detected by available methods such as polymerase chain reaction (PCR). In order to overcome this difficulty, viruses in water have to be concentrated from large volumes of water prior to detection. In this study, a total of 19 water samples from aquaculture ecosystem comprising 3 creeks, 10 shrimp culture ponds, 3 shrimp broodstock tanks and 2 larval rearing tanks of shrimp hatcheries and a sample from a hatchery effluent treatment tank were subjected to concentration of viruses by ultrafiltration (UF) using tangential flow filtration (TFF). Twenty to 100l of water from these sources was concentrated to a final volume of 100mL (200-1000 fold). The efficiency of recovery of WSSV by TFF ranged from 7.5 to 89.61%. WSSV could be successfully detected by PCR in the viral concentrates obtained from water samples of three shrimp culture ponds, one each of the shrimp broodstock tank, larval rearing tank, and the shrimp hatchery effluent treatment tank with WSSV copy numbers ranging from 6 to 157mL(-1) by quantitative real time PCR. The ultrafiltration virus concentration technique enables efficient detection of shrimp viral pathogens in water from aquaculture facilities. It could be used as an important tool to understand the efficacy of biosecurity protocols adopted in the aquaculture facility and to carry out epidemiological investigations of aquatic viral pathogens. Copyright © 2015 Elsevier B.V. All rights reserved.

  6. Habitat selection of the pink shrimp Farfantepenaeus paulensis and the blue crab Callinectes sapidus in an estuary in southern Brazil: influence of salinity and submerged seagrass meadows

    OpenAIRE

    Ruas, Vinicius Mendes; Rodrigues, Marcos Alaniz; Dumont, Luiz Felipe Cestari; D'Incao, Fernando

    2014-01-01

    This study was conducted in two estuarine inlets (Saco da Mangueira and Saco do Arraial) at the Patos Lagoon estuary, southern Brazil. The changes in relative abundance and size of post-larvae and juvenile shrimp Farfantepenaeus paulensis and juvenile blue crab Callinectes sapidus were compared, considering the influence of salinity and the presence of submerged seagrass meadows. The analyses were performed using generalized linear models (GLM) for abundance variations and A...

  7. The impact of shrimp farming effluent on bacterial communities in mangrove waters, Ceará, Brazil.

    Science.gov (United States)

    Sousa, O V; Macrae, A; Menezes, F G R; Gomes, N C M; Vieira, R H S F; Mendonça-Hagler, L C S

    2006-12-01

    The effects of shrimp farm effluents on bacterial communities in mangroves have been infrequently reported. Classic and molecular biology methods were used to survey bacterial communities from four mangroves systems. Water temperature, salinity, pH, total heterotrophic bacteria and maximum probable numbers of Vibrio spp. were investigated. Genetic profiles of bacterial communities were also characterized by polymerase chain reaction (PCR) amplification of eubacterial and Vibrio 16S rDNA using denaturing gradient gel electrophoresis (DGGE). Highest heterotrophic counts were registered in the mangrove not directly polluted by shrimp farming. The Enterobacteriaceae and Chryseomonas luteola dominated the heterotrophic isolates. Vibrio spp. pathogenic to humans and shrimps were identified. Eubacterial genetic profiles suggest a shared community structure independent of mangrove system. Vibrio genetic profiles were mangrove specific. Neither microbial counts nor genetic profiling revealed a significant decrease in species richness associated with shrimp farm effluent. The complex nature of mangrove ecosystems and their microbial communities is discussed.

  8. An investigation into mechanical strength of exoskeleton of hydrothermal vent shrimp (Rimicaris exoculata) and shallow water shrimp (Pandalus platyceros) at elevated temperatures

    Energy Technology Data Exchange (ETDEWEB)

    Verma, Devendra; Tomar, Vikas, E-mail: tomar@purdue.edu

    2015-04-01

    This investigation reports a comparison of the exoskeleton mechanical strength of deep sea shrimp species Rimicaris exoculata and shallow water shrimp species Pandalus platyceros at temperatures ranging from 25 °C to 80 °C using nanoindentation experiments. Scanning Electron Microscopy (SEM) observations suggest that both shrimp exoskeletons have the Bouligand structure. Differences in the structural arrangement and chemical composition of both shrimps are highlighted by SEM and EDX (Energy Dispersive X-ray) analyses. The variation in the elastic moduli with temperature is found to be correlated with the measured compositional differences. The reduced modulus of R. exoculata is 8.26 ± 0.89 GPa at 25 °C that reduces to 7.61 ± 0.65 GPa at 80 °C. The corresponding decrease in the reduced modulus of P. platyceros is from 27.38 ± 2.3 GPa at 25 °C to 24.58 ± 1.71 GPa at 80 °C. The decrease in reduced moduli as a function of temperature is found to be dependent on the extent of calcium based minerals in exoskeleton of both types of shrimp exoskeletons. - Highlights: • Shrimp species Pandalus platyceros and Rimicaris exoculata exoskeletons are analyzed. • Temperature dependent properties of shrimp exoskeleton are compared. • Mechanical properties are correlated with structure and composition of exoskeleton. • Mechanical properties reduce with increase in temperature. • Presence of biominerals gives better thermal stability to structure.

  9. An investigation into mechanical strength of exoskeleton of hydrothermal vent shrimp (Rimicaris exoculata) and shallow water shrimp (Pandalus platyceros) at elevated temperatures

    International Nuclear Information System (INIS)

    Verma, Devendra; Tomar, Vikas

    2015-01-01

    This investigation reports a comparison of the exoskeleton mechanical strength of deep sea shrimp species Rimicaris exoculata and shallow water shrimp species Pandalus platyceros at temperatures ranging from 25 °C to 80 °C using nanoindentation experiments. Scanning Electron Microscopy (SEM) observations suggest that both shrimp exoskeletons have the Bouligand structure. Differences in the structural arrangement and chemical composition of both shrimps are highlighted by SEM and EDX (Energy Dispersive X-ray) analyses. The variation in the elastic moduli with temperature is found to be correlated with the measured compositional differences. The reduced modulus of R. exoculata is 8.26 ± 0.89 GPa at 25 °C that reduces to 7.61 ± 0.65 GPa at 80 °C. The corresponding decrease in the reduced modulus of P. platyceros is from 27.38 ± 2.3 GPa at 25 °C to 24.58 ± 1.71 GPa at 80 °C. The decrease in reduced moduli as a function of temperature is found to be dependent on the extent of calcium based minerals in exoskeleton of both types of shrimp exoskeletons. - Highlights: • Shrimp species Pandalus platyceros and Rimicaris exoculata exoskeletons are analyzed. • Temperature dependent properties of shrimp exoskeleton are compared. • Mechanical properties are correlated with structure and composition of exoskeleton. • Mechanical properties reduce with increase in temperature. • Presence of biominerals gives better thermal stability to structure

  10. Effect of probiotic culture water on growth, mortality, and feed conversion ratio of Vaname shrimp (Litopenaeus vannamei Boone)

    Science.gov (United States)

    Bachruddin, M.; Sholichah, M.; Istiqomah, S.; Supriyanto, A.

    2018-04-01

    This study was aimed to determine the effect of various dose of probiotics in the culture water to the growth and mortality of Vaname shrimp. This study consist of treatment control and treatment of various dose of probiotics. Control (0 mL/10 L water), P1 (1 mL/10 L water), P2 (2 mL/10 L water), P3 (3 mL/10 L water) and P4 (4 mL/10 L water) treatment, given to the Vaname shrimps with intervals once per week. This probiotic consist of Lactobacillus plantarum, Lactobacillus fermentum, Bacillus subtilis, Bacillus licheniformis, Bacillus megaterium, Nitrobacter sp., and Nitrosomonas sp. Dependent variables in this study are weight of shrimp, length of shrimp, mortality and feed conversion ratio. The results had different of various dose probiotics application in the water showed significance for each treatment on growth and mortality of Vaname shrimp. The best results were shown in treatment P2 (2 mL/10 water) with mean value of Vaname shrimp weight is 7.447 ± 1.193 g/shrimp, the length is 10,390 ± 0,469 cm/shrimp, mortality is 41%, and the value of FCR is 0.91.

  11. Comparing Profits from Shrimp Aquaculture with and without Green-Water Technology in the Philippines

    NARCIS (Netherlands)

    Bosma, R.H.; Tendencia, E.A.

    2014-01-01

    To reduce disease impact, Philippine farmers developed the green-water (GW) system, which has been spreading rapidly since 2008. In the most applied GW-system, the shrimp pond receives water from a reservoir stocked with tilapia. We collected financial data on GW and non-GW systems from farms having

  12. Qualidade química e microbiológica de camarão-rosa comercializado em São Paulo Chemical and microbiological quality of pink shrimp sold in São Paulo

    Directory of Open Access Journals (Sweden)

    Andréa Figueiredo Procópio de Moura

    2003-06-01

    Full Text Available Durante as etapas de captura, manipulação e distribuição, o camarão precisa receber tratamentos adequados visando à manutenção das condições apropriadas de consumo. Com o intuito de avaliar a qualidade de camarão-rosa comercializado no município de São Paulo, amostras do crustáceo foram submetidas a testes de bases voláteis totais (BVT, substâncias reativas ao ácido tiobarbitúrico (TBARs, pH e análises microbiológicas (contagens totais de mesófilos e psicrotróficos. Estas provas, analisadas em conjunto, são consideradas parâmetros adequados no reconhecimento da qualidade do pescado. As amostras analisadas apresentaram valores de pH de 7,09 a 8,10, BVT entre 27,6 e 73 mgN/100 g, TBARs de 0,17 a 2,12 mg aldeído malônico/kg, contagem total de mesófilos de 2,5 x 10³ a 1,7 x 10(7 UFC/g e contagem total de psicrotróficos variando de 1,1 x 10(4 a 3,0 x 10(7 UFC/g. Os resultados obtidos sugerem qualidade química insatisfatória para o camarão-rosa analisado, incompatível para um produto considerado comercialmente como fresco.It is necessary to take special care when catching, handling and distributing shrimps in order to keep them in adequate conditions for future consumption. The objective of this study was to evaluate the quality of pink shrimp sold in São Paulo, Brazil. Samples of this crustacean were submitted to VBN (Volatile Basic Nitrogen, TBARS (Thiobarbituric Acid-Reactive Substances, pH and microbial analyses (Mesophilic and Psychrotrophic Plate Counts. These tests together are suitable parameters to evaluate the fish quality. The analyses of the samples showed the following results: the pH values ranged from 7.09 to 8.10, the VBN values ranged from 27.6 to 73 mgN/100 g, the TBARS values ranged from 0.17 to 2.12 mg malonaldehyde/kg, the Mesophilic Plate Counts ranged from 2.5 x 10³ to 1.7 x 10(7 UFC/g, and the Psychrotrophic Plate Counts ranged from 1.1 x 10(4 to 3.0 x 10(7 UFC/g. The results suggest that the

  13. EFFECT OF DYNAMICAL WATER QUALITY ON SHRIMP CULTURE IN THE INTEGRATED MULTITROPIC AQUACULTURE (IMTA

    Directory of Open Access Journals (Sweden)

    Brata Pantjara

    2015-06-01

    Full Text Available One of the technologies to improve the productivity of shrimp farms are environmentally friendly shrimp farming multitrophic integrated system known as Integrated Multitrophic Aquaculture (IMTA. The aims of the study were to observe the water quality dynamic on the integrated multitrophic aquaculture and the effect on the production. This study was used four plots which each of pond had 4,000 m2 in sizing, located in experiment pond, at Research and Development Institute for Coastal Aquaculture, Maros. The main commodities used were tiger and vannamei shrimp. In the A pond was cultivated the tiger shrimp with density 12 ind./m2, in B pond was tiger shrimp with density 8 ind./m2, C pond was vannamei shrimp with density 50 ind./m2, and D pond was vannamei shrimp with density 25 ind./m2. Other commodities were red tilapia (Oreochromis niloticus. Each pond had stocking density 2,400 ind./plot which was divided into 5 hapas having a size of (6 m x 4 m x 1.2 m/each, mangrove oysters (Crassostrea iredalei and Saccostrea cucullata with density 7,500 ind./4,000 m2 and seaweed (Gracilaria verrucosa of 500 kg/4,000 m2. The observation of dynamic water quality in the pond was conducted every day i.e. temperature, dissolved oxygen, salinity, and measured pH, while the total organic matter total (TOM, total ammonia nitrogen (TAN, nitrite, nitrate, phosphate were taken every two weeks. The measurements methods of water quality in laboratory was refered to APHA (2008; and Boyd (1990. During the study, absorption of N and P in seaweed were measured, the obtained plankton was identified and the ratio of carbon and nitrogen during the observation was also calculated. To determine the effect of dominant water quality on production was used the principal component analysis (PCA. The result showed that water quality during the study was suitable for shrimp and red tilapia culture. The dominant water qualities which effected the shrimp production in

  14. Assessing Ecological Impacts of Shrimp and Sewage Effluent: Biological Indicators with Standard Water Quality Analyses

    Science.gov (United States)

    Jones, A. B.; O'Donohue, M. J.; Udy, J.; Dennison, W. C.

    2001-01-01

    Despite evidence linking shrimp farming to several cases of environmental degradation, there remains a lack of ecologically meaningful information about the impacts of effluent on receiving waters. The aim of this study was to determine the biological impact of shrimp farm effluent, and to compare and distinguish its impacts from treated sewage effluent. Analyses included standard water quality/sediment parameters, as well as biological indicators including tissue nitrogen (N) content, stable isotope ratio of nitrogen (δ 15N), and amino acid composition of inhabitant seagrasses, mangroves and macroalgae. The study area consisted of two tidal creeks, one receiving effluent from a sewage treatment plant and the other from an intensive shrimp farm. The creeks discharged into the western side of Moreton Bay, a sub-tropical coastal embayment on the east coast of Australia. Characterization of water quality revealed significant differences between the creeks, and with unimpacted eastern Moreton Bay. The sewage creek had higher concentrations of dissolved nutrients (predominantly NO-3/NO-2 and PO3-4, compared to NH+4 in the shrimp creek). In contrast, the shrimp creek was more turbid and had higher phytoplankton productivity. Beyond 750 m from the creek mouths, water quality parameters were indistinguishable from eastern Moreton Bay values. Biological indicators detected significant impacts up to 4 km beyond the creek mouths (reference site). Elevated plant δ 15N values ranged from 10·4-19·6‰ at the site of sewage discharge to 2·9-4·5‰ at the reference site. The free amino acid concentration and composition of seagrass and macroalgae was used to distinguish between the uptake of sewage and shrimp derived N. Proline (seagrass) and serine (macroalgae) were high in sewage impacted plants and glutamine (seagrass) and alanine (macroalgae) were high in plants impacted by shrimp effluent. The δ 15N isotopic signatures and free amino acid composition of inhabitant

  15. Study on shrimp waste water and vermicompost as a nutrient source for bell peppers

    Science.gov (United States)

    The aquaculture industry generates significant nutrient-rich wastewater that is released into streams and rivers causing environmental concern. The objective of this controlled environment study was to evaluate the effect of waste shrimp water (SW), vermicompost (VC), at rates of 10%, 20%, 40%, and ...

  16. Environmental factors affecting recruitment of northern shrimp (Pandalus borealis) in West Greenland waters

    DEFF Research Database (Denmark)

    Wieland, Kai; Siegstad, H.

    2012-01-01

    Survey estimates of biomass of Northern shrimp (Pandalus borealis) in West Greenland waters increased from about 178000 tons in 1998 to about 598000 tons in 2003. The increase in stock size was preceded by several consecutive years in which recruitment was substantially above average. Recruitment...

  17. Use of seaweed Ulva lactuca for water bioremediation and as feed additive for white shrimp Litopenaeus vannamei

    Directory of Open Access Journals (Sweden)

    Regina Elizondo-González

    2018-03-01

    Full Text Available Two experimental feeding trials were conducted during four weeks to evaluate the use of Ulva lactuca in shrimp culture: (1 for wastewater bioremediation, and (2 using different inclusion levels of U. lactuca meal in shrimp feed. In feeding trial 1, shrimp reared under seaweed U. lactuca water exchange in a re-circulation system (SWE resulted in similar growth and feed utilization as shrimp reared with clean water exchange (CWE. Shrimp under no water exchange (NWE resulted in significant lower growth and higher feed conversion rate (FCR compared to the other treatments (p  0.05. In feeding trial 2, U. lactuca biomass produced by wastewater bioremediation in SWE treatment were dried and ground to formulate diets containing 0, 1, 2, and 3% U. lactuca meal (0UL, 1UL, 2UL, and 3UL. Shrimp fed the 3 UL diet resulted in a significant (p < 0.05 improvement of growth and FCR, and enhanced whole shrimp lipid and carotenoid content by 30 and 60%, respectively, compared to control diet. Seaweed U. lactuca is suggested as a desirable species for wastewater bioremediation in integrated aquaculture systems, and its meal as a good feed additive for farmed shrimp.

  18. Use of seaweed Ulva lactuca for water bioremediation and as feed additive for white shrimp Litopenaeus vannamei.

    Science.gov (United States)

    Elizondo-González, Regina; Quiroz-Guzmán, Eduardo; Escobedo-Fregoso, Cristina; Magallón-Servín, Paola; Peña-Rodríguez, Alberto

    2018-01-01

    Two experimental feeding trials were conducted during four weeks to evaluate the use of Ulva lactuca in shrimp culture: (1) for wastewater bioremediation, and (2) using different inclusion levels of U. lactuca meal in shrimp feed. In feeding trial 1, shrimp reared under seaweed U. lactuca water exchange in a re-circulation system (SWE) resulted in similar growth and feed utilization as shrimp reared with clean water exchange (CWE). Shrimp under no water exchange (NWE) resulted in significant lower growth and higher feed conversion rate (FCR) compared to the other treatments ( p   0.05). In feeding trial 2, U. lactuca biomass produced by wastewater bioremediation in SWE treatment were dried and ground to formulate diets containing 0, 1, 2, and 3% U. lactuca meal (0UL, 1UL, 2UL, and 3UL). Shrimp fed the 3 UL diet resulted in a significant ( p  shrimp lipid and carotenoid content by 30 and 60%, respectively, compared to control diet. Seaweed U. lactuca is suggested as a desirable species for wastewater bioremediation in integrated aquaculture systems, and its meal as a good feed additive for farmed shrimp.

  19. Northern shrimp ( Pandalus borealis ) recruitment in West Greenland waters : Part I. Distribution of Pandalus shrimp larvae in relation to hydrography and plankton

    DEFF Research Database (Denmark)

    Pedersen, S.A.; Storm, L.; Stenberg, Claus

    2002-01-01

    Plankton samples and oceanographic data were obtained during transect studies across fishing banks over the West Greenland shelf areas in June 1999, May, and July 2000. The hypothesis that larval shrimp are linked to the behaviour of hydrographic fronts was tested by determining whether larval...... shrimp abundance was linked to plankton distributions, species composition and primary productivity. We found six pelagic developmental stages (ZI–ZVI) in two species of Pandalus larvae. P. borealis was the most abundant species in all stages from ZII to ZVI. The smaller P. montagui larvae were slightly....... The two species showed minor differences in larval distribution across banks and between transects, indicating a wide larval dispersal and a relatively short hatching period. We found no relationship between indices of larval shrimp abundance and the T–S characteristics of water masses, chlorophyll...

  20. Growth and survival of pink shrimp (Farfantepenaeus paulensis postlarve in cages and pen enclosures Crescimento e sobrevivência de pós-larvas de camarão-rosa (Farfantepenaeus paulensis em gaiolas e cercados

    Directory of Open Access Journals (Sweden)

    Luciano Jensen Vaz

    2004-06-01

    Full Text Available Technology for the culture of the pink shrimp Farfantepenaeus paulensis in low-cost cages and pen enclosures was developed together with artisanal fishermen of the Patos Lagoon estuary, southern Brazil. Although the production of postlarvae (PL under laboratory conditions is well documented, survival and growth during the nursery phase cages and pen enclosures in the nature has not yet been analyzed. Therefore, the present study compared survival and growth of F. paulensis postlarvae reared either in cages or pens. Six cages (2.0 ´ 2.0 ´ 1.4 m of PVC-coated polyester with a mesh size of 1.5 mm were stocked with 800 PL26 each. To assess the effect of the substrate, a 10 cm layer of sand was added to three of these cages to simulate a pen enclosure. No difference in the mean survival rate between cages (92.2% and pens (88.7% was found (P > 0.05. However, final weight of shrimp reared in pens (1.05 ± 0.05 g was higher than those kept in cages (0.88 ± 0.12 g. The nursery phase of F. paulensis in cages and pens did not affect survival. Nevertheless, because of the higher growth rate of shrimp grown in pen enclosures, this kind of structure should be preferentially used in nursery rearing of this species.Um pacote tecnológico para o cultivo do camarão-rosa em estruturas alternativas de baixo custo, gaiolas e cercados, vem sendo aplicado em conjunto com pescadores artesanais do estuário da Lagoa dos Patos, no extremo sul do Brasil. Embora a tecnologia para o cultivo intensivo de pós-larvas (PL em laboratório já esteja bem documentada, informações referentes à sobrevivência e crescimento desses organismos na fase de berçário ainda são escassas para cercados e gaiolas no ambiente natural. Em virtude destes fatos, o objetivo do trabalho foi comparar o crescimento e a sobrevivência de pós-larvas de F. paulensis durante a fase de berçário em gaiolas e cercados no ambiente. Para o desenvolvimento do trabalho, foram utilizadas seis

  1. Does zero-water discharged technology enhance culture performance of pacific white shrimp (Litopenaeus vannamei Boone.)?

    Science.gov (United States)

    Suantika, Gede; Anggraeni, Jayanty; Hasby, Fahri Azhari; Yanuwiarti, Ni Putu Indah

    2014-03-01

    Litopenaeus vannamei or white leg shrimp is an introduced shrimp which has successfully cultured in Indonesia. In Indonesia, L. vannamei is commonly cultured on outdoor/earthen pond that requires renewal of water, less control in term of water quality and disease and attributed to unpredictable yield production. Based on the existing culture condition, a system that enable to minimize water consumption, improve the hygiene of the culture and at the same time maintain a more stable yield production is urgent to be developed by using a zero water discharge system. The system consists of: (a) culture tank - to retain and culture the shrimp; (b) CaCO3 grained - buffering agent and substrate of nitrifying bacteria; (c) aeration line - to provide O2 and homogenize the culture; (d) ancho (feeding) - to control an appropriate feed; (e) nitrifying bacteria adding - to consume ammonium and nitrite then convert it to nitrate, and also control pathogen Vibrio sp.; (f) diatom microalgae (Chaetoceros gracilis) - to uptake nitrate, bacteriostatic agent, feed source, provide O2 and shading. In this study, there were 2 treatments: the static culture (batch) system was set as control (K) (in 70 PL/m2), and culture system with zero-water discharge system which was inoculated by 0.02% v/v 106 CFU/ml of mixed culture nitrifying bacteria and diatom microalgae in 70 PL/m2 (P1). The white leg shrimp used in this experiment was at post larvae (PL) 10 and cultured in a batch system (1 × 1 × 0.5 m3 pond) during 2 months. Several parameters including survival rate, mean body weight, and water quality (salinity, temperature, pH, DO, ammonium, nitrite, and nitrate) were measured. Based on the results, biomass of P1 (237.12 ± 31.11) gram is significantly higher than control (K) (180.80 ± 12.26) gram (Pshrimp post larvae, except ammonium concentration in control (K) (2.612 ± 0.56) mg/L which is significantly different from P1 (1.287 ± 0.49) mg/L. Based on this research, zero-water discharge

  2. Potential Bacillus probiotics enhance bacterial numbers, water quality and growth during early development of white shrimp (Litopenaeus vannamei).

    Science.gov (United States)

    Nimrat, Subuntith; Suksawat, Sunisa; Boonthai, Traimat; Vuthiphandchai, Verapong

    2012-10-12

    Epidemics of epizootics and occurrence of multiresistant antibiotics of pathogenic bacteria in aquaculture have put forward a development of effective probiotics for the sustainable culture. This study examined the effectiveness of forms of mixed Bacillus probiotics (probiotic A and probiotic B) and mode of probiotic administration on growth, bacterial numbers and water quality during rearing of white shrimp (Litopenaeus vannamei) in two separated experiments: (1) larval stages and (2) postlarval (PL) stages. Forms of Bacillus probiotics and modes of probiotic administration did not affect growth and survival of larval to PL shrimp. The compositions of Bacillus species in probiotic A and probiotic B did not affect growth and survival of larvae. However, postlarvae treated with probiotic B exhibited higher (Pshrimp. Total heterotrophic bacteria and Bacillus numbers in larval and PL shrimp or culture water of the treated groups were higher (Pshrimp were significantly decreased, compared to the controls. Microencapsulated Bacillus probiotic was effective for rearing of PL L. vannamei. This investigation showed that administration of mixed Bacillus probiotics significantly improved growth and survival of PL shrimp, increased beneficial bacteria in shrimp and culture water and enhanced water quality for the levels of pH, ammonia and nitrite of culture water. Copyright © 2012 Elsevier B.V. All rights reserved.

  3. An investigation into environment dependent nanomechanical properties of shallow water shrimp (Pandalus platyceros) exoskeleton

    Energy Technology Data Exchange (ETDEWEB)

    Verma, Devendra; Tomar, Vikas, E-mail: tomar@purdue.edu

    2014-11-01

    The present investigation focuses on understanding the influence of change from wet to dry environment on nanomechanical properties of shallow water shrimp exoskeleton. Scanning Electron Microscopy (SEM) based measurements suggest that the shrimp exoskeleton has Bouligand structure, a key characteristic of the crustaceans. As expected, wet samples are found to be softer than dry samples. Reduced modulus values of dry samples are found to be 24.90 ± 1.14 GPa as compared to the corresponding values of 3.79 ± 0.69 GPa in the case of wet samples. Hardness values are found to be 0.86 ± 0.06 GPa in the case of dry samples as compared to the corresponding values of 0.17 ± 0.02 GPa in the case of wet samples. In order to simulate the influence of underwater pressure on the exoskeleton strength, constant load creep experiments as a function of wet and dry environments are performed. The switch in deformation mechanism as a function of environment is explained based on the role played by water molecules in assisting interface slip and increased ductility of matrix material in wet environment in comparison to the dry environment. - Highlights: • Environment dependent (dry-wet) properties of shrimp exoskeleton are analyzed. • Mechanical properties are correlated with the structure and composition. • Presence of water leads to lower reduced modulus and hardness. • SEM images shows the Bouligand pattern based structure. • Creep-relaxation of polymer chains, interface slip is high in presence of water.

  4. An investigation into environment dependent nanomechanical properties of shallow water shrimp (Pandalus platyceros) exoskeleton

    International Nuclear Information System (INIS)

    Verma, Devendra; Tomar, Vikas

    2014-01-01

    The present investigation focuses on understanding the influence of change from wet to dry environment on nanomechanical properties of shallow water shrimp exoskeleton. Scanning Electron Microscopy (SEM) based measurements suggest that the shrimp exoskeleton has Bouligand structure, a key characteristic of the crustaceans. As expected, wet samples are found to be softer than dry samples. Reduced modulus values of dry samples are found to be 24.90 ± 1.14 GPa as compared to the corresponding values of 3.79 ± 0.69 GPa in the case of wet samples. Hardness values are found to be 0.86 ± 0.06 GPa in the case of dry samples as compared to the corresponding values of 0.17 ± 0.02 GPa in the case of wet samples. In order to simulate the influence of underwater pressure on the exoskeleton strength, constant load creep experiments as a function of wet and dry environments are performed. The switch in deformation mechanism as a function of environment is explained based on the role played by water molecules in assisting interface slip and increased ductility of matrix material in wet environment in comparison to the dry environment. - Highlights: • Environment dependent (dry-wet) properties of shrimp exoskeleton are analyzed. • Mechanical properties are correlated with the structure and composition. • Presence of water leads to lower reduced modulus and hardness. • SEM images shows the Bouligand pattern based structure. • Creep-relaxation of polymer chains, interface slip is high in presence of water

  5. Acidic electrolyzed water as a novel transmitting medium for high hydrostatic pressure reduction of bacterial loads on shelled fresh shrimp

    Directory of Open Access Journals (Sweden)

    Suping eDu

    2016-03-01

    Full Text Available Acidic electrolyzed water (AEW, a novel non-thermal sterilization technology, is widely used in the food industry. In this study, we firstly investigated the effect of AEW as a new pressure transmitting medium for high hydrostatic pressure (AEW-HHP processing on microorganisms inactivation on shelled fresh shrimp. The optimal conditions of AEW-HHP for Vibrio parahaemolyticus inactivation on sterile shelled fresh shrimp were obtained using response surface methodology: NaCl concentration to electrolysis 1.5 g/L, treatment pressure 400 MPa, treatment time 10 min. Under the optimal conditions mentioned above, AEW dramatically enhanced the efficiency of HHP for inactivating V. parahaemolyticus and Listeria monocytogenes on artificially contaminated shelled fresh shrimp, and the log reductions were up to 6.08 and 5.71 log10 CFU/g respectively, while the common HHP could only inactivate the two pathogens up to 4.74 and 4.31 log10 CFU/g respectively. Meanwhile, scanning electron microscopy (SEM showed the same phenomenon. For the naturally contaminated shelled fresh shrimp, AEW-HHP could also significantly reduce the micro flora when examined using plate count and PCR-DGGE. There were also no significant changes, histologically, in the muscle tissues of shrimps undergoing the AEW-HHP treatment. In summary, using AEW as a new transmitting medium for HHP processing is an innovative non thermal technology for improving the food safety of shrimp and other aquatic products.

  6. Acidic Electrolyzed Water as a Novel Transmitting Medium for High Hydrostatic Pressure Reduction of Bacterial Loads on Shelled Fresh Shrimp

    Science.gov (United States)

    Du, Suping; Zhang, Zhaohuan; Xiao, Lili; Lou, Yang; Pan, Yingjie; Zhao, Yong

    2016-01-01

    Acidic electrolyzed water (AEW), a novel non-thermal sterilization technology, is widely used in the food industry. In this study, we firstly investigated the effect of AEW as a new pressure transmitting medium for high hydrostatic pressure (AEW-HHP) processing on microorganisms inactivation on shelled fresh shrimp. The optimal conditions of AEW-HHP for Vibrio parahaemolyticus inactivation on sterile shelled fresh shrimp were obtained using response surface methodology: NaCl concentration to electrolysis 1.5 g/L, treatment pressure 400 MPa, treatment time 10 min. Under the optimal conditions mentioned above, AEW dramatically enhanced the efficiency of HHP for inactivating V. parahaemolyticus and Listeria monocytogenes on artificially contaminated shelled fresh shrimp, and the log reductions were up to 6.08 and 5.71 log10 CFU/g respectively, while the common HHP could only inactivate the two pathogens up to 4.74 and 4.31 log10 CFU/g respectively. Meanwhile, scanning electron microscopy (SEM) showed the same phenomenon. For the naturally contaminated shelled fresh shrimp, AEW-HHP could also significantly reduce the micro flora when examined using plate count and PCR-DGGE. There were also no significant changes, histologically, in the muscle tissues of shrimps undergoing the AEW-HHP treatment. In summary, using AEW as a new transmitting medium for HHP processing is an innovative non thermal technology for improving the food safety of shrimp and other aquatic products. PMID:27014228

  7. The immunostimulatory effects of hot-water extract of Gelidium amansii via immersion, injection and dietary administrations on white shrimp Litopenaeus vannamei and its resistance against Vibrio alginolyticus.

    Science.gov (United States)

    Fu, Yu-Win; Hou, Wen-Ying; Yeh, Su-Tuen; Li, Chiu-Hsia; Chen, Jiann-Chu

    2007-06-01

    The total haemocyte count (THC), phenoloxidase activity, and respiratory burst were examined when white shrimp Litopenaeus vannamei were immersed in seawater (34 per thousand) containing hot-water extract of red alga Gelidium amansii at 200, 400 and 600 mg l(-1), injected with hot-water extract at 4 and 6 microg g(-1) shrimp, and fed diets containing hot-water extract at 0, 0.5, 1.0 and 2.0 g kg(-1). These parameters increased significantly when shrimp were immersed in seawater containing hot-water extract at 400 and 600 mg l(-1) after 1h, when shrimp were injected with hot-water extract at 6 microg g(-1) shrimp after one day, and when shrimp were fed diets containing hot-water extract at 1.0 and 2.0 g kg(-1) after 14 days. Phagocytic activity and clearance efficiency were significantly higher for the shrimp that were fed diets containing hot-water extract at 1.0 and 2.0 g kg(-1) than those of shrimp that were fed diets containing hot-water extract at 0 and 0.5 g kg(-1) after 14 and 28 days. In a separate experiment, L. vannamei which had received hot-water extract via injection, or fed diets containing hot-water extract, were challenged after 3h or 28 days with V. alginolyticus at 2 x 10(6) cfu shrimp(-1) and 1 x 10(6) cfu shrimp(-1), respectively, and then placed in seawater. The survival of shrimp that were injected with hot-water extract at 6 microg g(-1) was significantly higher than that of control shrimp after 1 day, and the survival of shrimp fed diets containing hot-water extract at 0.5, 1.0 and 2.0 g kg(-1) increased significantly after 3 days as well as at the end of the experiment (6 days after the challenge), respectively. It was concluded that L. vannamei that were immersed in hot-water extract at 400 mg l(-1), injected with hot-water extract at 6 microg g(-1) shrimp, and fed hot-water extract of G. amansii at 2.0 g kg(-1) or less showed increased immune ability as well as resistance to V. alginolyticus infection.

  8. Water Environmental Carrying Capacity for Activities of Intensive Shrimp Farm in Banyuputih Sub-District, Situbondo Regency

    Directory of Open Access Journals (Sweden)

    Abdul Muqsith

    2014-09-01

    Full Text Available This research was aimed to determine the width area of an intensive shrimp farm which can be supported by water environment of Banyuputih Sub-District, Situbondo Regency according to the water assimilation capacity towards the farm’s organic waste. We used survey method and secondary data collection from other researches or result report of relevant institution. This study was using two approaches of environmental carrying capacities, i.e. (1 quantitative method on available water volume in coast (coastal water and (2 quantitative method on available Dissolved Oxygen (DO in waste receiving water body of coastal water. The result showed that the utilization of coastal area for intensive shrimp farm activities in this study area is not exceeding its carrying capacity of water yet. Based on the analysis, the water environmental carrying capacity for the farm’s organic waste is 375.637 kg TSS. Organic waste (TSS disposed from an intensive shrimp cultivation at the study area is 6.506 kg TSS.ha-1.MT-1. The width of intensive area which can be supported by Banyuputih Situbondo water environment is 58 ha. The width of available intensive pond area at study site is 113 ha, but only 39 ha is active/productive, the remaining 74 ha is inactive/unproductive area. If unproductive area will be re-operated/reactivated again, then we would recommend only 19 ha according to the water environment carrying capacity for the farm’s organic waste (58 ha. Estimation result of water environment carrying capacity for this organic waste of shrimp farm can be used as reference to determine the development or management threshold of sustainable pond area at this study site.   Keywords: environment carrying capacity, organic waste, shrimp farm

  9. Uptake of cobalt-60 from sea water and from labelled food by the common shrimp Crangon erangon (L.)

    International Nuclear Information System (INIS)

    Weers, A.W. van

    1975-01-01

    The role of two different modes of uptake in the accumulation of 60 Co by the common shrimp (Crangon crangon (L.)) is the subject of the present study. The results show that accumulation of 60 Co from sea water is a slow process. The concentration factor for whole animals reached in one month was only about 13. Most of the activity accumulated from water appears to be associated with the exoskeleton. As a consequence, moulting has a pronounced effect on the uptake pattern of 60 Co and on the subsequent retention of the radionuclide by shrimps kept in non-radioactive sea water. After single feeding of shrimps with labelled mussel flesh, 60 Co is retained according to an exponential function with a short-lived and a long-lived component. The short-lived component has a mean biological half-life of 1.2 days and accounts for about 80% of the initial activity. About 20% of the initial activity is lost with a mean biological half-life of about 10 days. After repeated feeding of labelled mussel flesh the short-lived component in the 60 Co retention is virtually absent. Cobalt-60 taken up with food is localized mainly in the digestive gland and the concentration in the edible muscles from the abdomen is relatively small. It is concluded from the present study that direct uptake from sea water will play only a minor role in the accumulation of 60 Co in the internal organs of the shrimp. 60 Co released into the marine environment will be taken up by shrimps mainly from food. The results indicate a rapid turnover of 60 Co in shrimps. (author)

  10. Water Quality Control for Shrimp Pond Using Adaptive Neuro Fuzzy Inference System : The First Project

    Science.gov (United States)

    Umam, F.; Budiarto, H.

    2018-01-01

    Shrimp farming becomes the main commodity of society in Madura Island East Java Indonesia. Because of Madura island has a very extreme weather, farmers have difficulty in keeping the balance of pond water. As a consequence of this condition, there are some farmers experienced losses. In this study an adaptive control system was developed using ANFIS method to control pH balance (7.5-8.5), Temperature (25-31°C), water level (70-120 cm) and Dissolved Oxygen (4-7,5 ppm). Each parameter (pH, temperature, level and DO) is controlled separately but can work together. The output of the control system is in the form of pump activation which provides the antidote to the imbalance that occurs in pond water. The system is built with two modes at once, which are automatic mode and manual mode. The manual control interface based on android which is easy to use.

  11. Evidence of lipofuscin accumulation in the deep-water red shrimp Aristaeomorpha foliacea (Risso, 1827

    Directory of Open Access Journals (Sweden)

    V. MEZZASALMA

    2008-12-01

    Full Text Available Lipofuscin, a non-degradable, degenerative fluorescent pigment which accumulates in post-mitotic cells, represents a promising method for ageing marine crustaceans. The presence and accumulation of lipofuscin has been studied in the deep-water red shrimp Aristaeomorpha foliacea (Risso, 1827 to assess its use as a tool for ageing larger (i.e., older specimens and thus improve knowledge of the growth and longevity of this species. Specimens, gathered during experimental trawl surveys carried out in the Strait of Sicily (Mediterranean Sea, were stored directly on-board in 10% buffered formaldehyde solution; their brain was thereafter removed, prepared with various current histological techniques and examined with a binocular microscope. Thin sections of the olfactory lobe cell mass were also analyzed using fluorescence microscopy, and the lipofuscin concentration was measured through image analysis. Various indices were computed for each individual by pooling data from many images: number and coverage of the lipofuscin granules per unit area, and mean individual area of the granules. Lipofuscin was detected in all specimens investigated with characteristics (grain typology and dimension strictly resembling those already described in other crustacean species. The present preliminary results encourage further studies to develop and validate a methodology based on the use of lipofuscin for improving the relative ageing of large A. foliacea shrimps.

  12. Microplastic contamination in brown shrimp (Crangon crangon, Linnaeus 1758) from coastal waters of the Southern North Sea and Channel area

    NARCIS (Netherlands)

    Devriese, L.I.; van der Meulen, M.D.; Maes, T.; Bekaert, K.; Paul-Pont, I.; Frère, L.; Robbens, J.; Vethaak, A.D.

    2015-01-01

    This study assessed the capability of Crangon crangon (L.), an ecologically and commercially important crustacean, of consuming plastics as an opportunistic feeder. We therefore determined the microplastic content of shrimp in shallow water habitats of the Channel area and Southern part of the North

  13. The effect of carbohydrate addition on water quality and the nitrogen budget in extensive shrimp culture systems

    NARCIS (Netherlands)

    Hari, B.; Kurup, B.M.; Varghese, J.T.; Schrama, J.W.; Verdegem, M.C.J.

    2006-01-01

    Water quality and shrimp production were monitored in extensively managed ponds which were fed a 25% (P25) or 40% (P40) dietary protein, each diet complemented with or without carbohydrate (CH) addition. The experiment was carried out in 6-m3 concrete tanks, with a mud bottom and stocked with 7 post

  14. Monitoring of inland waters for culturing shrimp Litopenaeus vannamei: application of a method based on survival and chemical composition.

    Science.gov (United States)

    Valencia-Castañeda, G; Millán-Almaraz, M I; Fierro-Sañudo, J F; Fregoso-López, M G; Páez-Osuna, F

    2017-08-01

    This study evaluated the suitability of 21 inland waters (16 well waters and 5 surface waters) from Northwest Mexico via short- (48 h) and medium-term (28 days) tests using postlarvae (PL18) of Litopenaeus vannamei. In the short test, survival was assessed at 48 h after shrimp were placed in groups of 10 postlarvae into 2-L containers of inland water, to which they had been previously acclimated. The second, medium-term test consisted of four replicates with 10 postlarvae, and each group was placed in 15-L containers with the treatment water. Weights (initial and final) and survival were evaluated weekly for 28 days. In those waters for which the short test was positive and the medium-term test was negative and which also had a deficiency of potassium and/or magnesium, a third test was conducted. These last waters were supplemented with salts, and the shrimp survival and weights (initial and final) were recorded for 28 days. The water samples from San Jose, Mochicahui, Sinaloa River, Caimanero inner Lagoon, La Pipima, Campo Santa Fe, Escopama, and Fitmar had >60% survival in the short test. The Caimanero inner Lagoon water had the highest survival (87.5 ± 9.6%) and final mean weight (201.3 ± 86.2 mg). In the third test, it was found that shrimp in the water from La Pipima, Campo Santa Fe, and Fitmar exhibited 100% survival for 2 weeks. Finally, in this work, a decision tree to evaluate the suitability of low-salinity water for shrimp farming was proposed, which can be applied in other regions.

  15. Evaluation of heavy metals in the tissues of different species of shrimps collected from coastal waters of Bushehr, Persian Gulf

    Directory of Open Access Journals (Sweden)

    Ali Movahed

    2013-06-01

    Full Text Available Background: The occumulation of heavy metals which are as the results of industrial, urban and agricultural sewages are usually resistant to chemical dissociation. They can easily contaminate aquatic animals especially shrimps which are one of the food chains of humans. The aim of this study was to evaluate the concentration of heavy metals in the tissues of different types of shrimps (wild and farmed in the sea waters of province of Bushehr (Persian Gulf. Material and Methods: Wild shrimps from different areas of the province and also three types of farmed shrimps including Ferropenaeus, penaeus semisulcatus and Litopenaeusvannamei were caught and collected. Then cleaned, washed, dried and made into powder and then made into ash in a furnace at 550 °C. Heavy metals including Pb, Cd, Hg, Cu, and Zn were measured by atomic absorption flame photometry. Results: The mean values of the concentration of the heavy metals including Pb, Cd, Zn, and Cu present in the wild shrimps were, 2.86, 9.53, 0.45, 1.36 ppm respectively. The amount of Hg found to be 2.8 ppb. Also the mean values of the concentration of the heavy metals in the farmed shrimps were measured as 3, 9.8, 0.42 and 1.37 ppm respectively and the amount of Hg was 2.7 ppb. There was no difference between the amount of heavy metals estimated in the tissues from wild shrimps and the farmed one. Conclusion: The results of this investigation showed that the concentration of heavy metals including Zn,Cu and Hg in both types of the shrimps were less than the amounts reported by WHO and so not risky for health. However the concentration of Pb and Cd in both types were more than the recommended consumption limit for the humans, and they can be considered as risk factors for many diseases. This suggests that attempts should be taken by the responsible authorities to prevent the contamination of sea waters.

  16. An investigation on the application of ohmic heating of cold water shrimp and brine mixtures

    DEFF Research Database (Denmark)

    Pedersen, Søren Juhl; Feyissa, Aberham Hailu; Brøkner Kavli, Sissel Therese

    2016-01-01

    Cooking is an important unit-operation in the production of cooked and peeled shrimps. The present study explores the feasibility of using ohmic heating for cooking of shrimps. The focus is on investigating the effects of different process parameters on heating time and quality of ohmic cooked...... shrimps (Pandalus Borelias). The shrimps were heated to a core temperature of 72 °C in a brine solution using a small batch ohmic heater. Three experiments were performed: 1) a comparative analyses of the temperature development between different sizes of shrimps and thickness (head and tail region...... of the shrimp) over varying salt concentrations (10 kg m−3 to 20 kg m−3) and electric field strengths (1150 V m−1 to 1725 V m−1) with the heating time as the response; 2) a 2 level factorial experiment for screening the impact of processing conditions using electric field strengths of 1250 V m−1 and 1580 V m−1...

  17. MODELING THE RELATIONSHIP BETWEEN SHRIMP MARICULTURE AND WATER QUALITY IN THE RIO CHONE ESTUARY, ECUADOR

    Science.gov (United States)

    The Rio Chone estuary in Ecuador has been heavily altered by the conversion of over 90% of the original mangrove forest to shrimp ponds. We carried out computational experiments using both hydrodynamic and shrimp pond models to investigate factors leading to declines in estuarine...

  18. Reproductive features of the deep-water rose shrimp, Parapenaeus longirostris (Crustacea: Penaeidae, in the Strait of Sicily

    Directory of Open Access Journals (Sweden)

    M.L. BIANCHINI

    2010-02-01

    Full Text Available The deep‑water rose shrimp, Parapenaeus longirostris (Lucas, 1846, is one of the most valuable and heavily exploited demersal species of the Mediterranean bottom trawl fisheries. The basic life traits of this shrimp, in particular its reproductive aspects, are regularly monitored during experimental trawl surveys carried out in the Mediterranean Sea. Gonadic condition and maturity status for estimating the size at onset of sexual maturity are commonly assessed in females, using macroscopic color scales, histologically validated only in a few geographical areas. In this study, histological analyses were performed on rose shrimps collected from a trawl survey carried out in the Strait of Sicily, in order to support the empirical 4‑stage macroscopic scale locally employed. Ovaries from females of different sizes, ranging between 16 mm and 40 mm carapace length, were collected and used for microscopic examination of their structure, for oocytes counts and for oocyte diameter frequency distributions; oocytes diameter was measured by imaging analysis. The collected data were also used to estimate other basic vital parameters of the rose shrimp population. The histological observations show a broad correspondence between ovarian development and macroscopic features; therefore, the classifications derived by the empirical scale remain suitable for estimating the maturity parameters.

  19. Pink urine syndrome

    Directory of Open Access Journals (Sweden)

    Luis del Carpio-Orantes

    2017-03-01

    Full Text Available In the present images we allude to a syndrome of low incidence, characterized by pink urine, being related to factors such as obesity, and being triggered by abdominal surgeries, use of propofol, among others. Being favoured by the presence of abundant crystals of uric acid in the urine confers the typical pink coloration.

  20. Bacterial Community Associated with Healthy and Diseased Pacific White Shrimp (Litopenaeus vannamei) Larvae and Rearing Water across Different Growth Stages.

    Science.gov (United States)

    Zheng, Yanfen; Yu, Min; Liu, Jiwen; Qiao, Yanlu; Wang, Long; Li, Zhitao; Zhang, Xiao-Hua; Yu, Mingchao

    2017-01-01

    Bacterial communities are called another "organ" for aquatic animals and their important influence on the health of host has drawn increasing attention. Thus, it is important to study the relationships between aquatic animals and bacterial communities. Here, bacterial communities associated with Litopenaeus vannamei larvae at different healthy statuses (diseased and healthy) and growth stages (i.e., zoea, mysis, and early postlarvae periods) were examined using 454-pyrosequencing of the 16S rRNA gene. Bacterial communities with significant difference were observed between healthy and diseased rearing water, and several bacterial groups, such as genera Nautella and Kordiimonas could also distinguish healthy and diseased shrimp. Rhodobacteraceae was widely distributed in rearing water at all growth stages but there were several stage-specific groups, indicating that bacterial members in rearing water assembled into distinct communities throughout the larval development. However, Gammaproteobacteria , mainly family Enterobacteriaceae , was the most abundant group (accounting for more than 85%) in shrimp larvae at all growth stages. This study compared bacterial communities associated with healthy and diseased L . vannamei larvae and rearing water, and identified several health- and growth stage-specific bacterial groups, which might be provided as indicators for monitoring the healthy status of shrimp larvae in hatchery.

  1. Bacterial Community Associated with Healthy and Diseased Pacific White Shrimp (Litopenaeus vannamei Larvae and Rearing Water across Different Growth Stages

    Directory of Open Access Journals (Sweden)

    Yanfen Zheng

    2017-07-01

    Full Text Available Bacterial communities are called another “organ” for aquatic animals and their important influence on the health of host has drawn increasing attention. Thus, it is important to study the relationships between aquatic animals and bacterial communities. Here, bacterial communities associated with Litopenaeus vannamei larvae at different healthy statuses (diseased and healthy and growth stages (i.e., zoea, mysis, and early postlarvae periods were examined using 454-pyrosequencing of the 16S rRNA gene. Bacterial communities with significant difference were observed between healthy and diseased rearing water, and several bacterial groups, such as genera Nautella and Kordiimonas could also distinguish healthy and diseased shrimp. Rhodobacteraceae was widely distributed in rearing water at all growth stages but there were several stage-specific groups, indicating that bacterial members in rearing water assembled into distinct communities throughout the larval development. However, Gammaproteobacteria, mainly family Enterobacteriaceae, was the most abundant group (accounting for more than 85% in shrimp larvae at all growth stages. This study compared bacterial communities associated with healthy and diseased L. vannamei larvae and rearing water, and identified several health- and growth stage-specific bacterial groups, which might be provided as indicators for monitoring the healthy status of shrimp larvae in hatchery.

  2. Food emulsion type oil in water prepared with high-protein from shrimp (Penaeus vannamei heads flour – SHF

    Directory of Open Access Journals (Sweden)

    Yuli Cano

    2017-09-01

    Full Text Available The use of flour from shrimp (Penaeus vannamei heads with a high content of protein (SHF to stabilize food emulsions type oil in water (o/w is an alternative to take advantage of the by-products of the shrimp industry. The aim of this work was to prepare food emulsion type oil in water (o/w using the SHF due to the high percentage in proteins; for this procedure a physicochemical and bromatological characterization of flour of shrimps (Penaeus vannamei heads has been done, in which a percentage of protein 51 %, moisture of 11,82 %, fat 8,52 % and 22,23 % of ash has been obtained. The base emulsions may be used in food products such as salad dressing, mayonnaise, spreads, dressings and other products. The different emulsions with adequate rheological and microstructural characteristics were prepared using different concentrations of palm oil (20, 30 and 40%w/w and different concentrate of SHF (0,5, 1 and 2 % w/w. Therefore, we have obtained a food emulsion stable type oil in water (O/W with 2 % w/w of SHF, which presented a behavior non-Newtonian fluid type shear-thinning and homogeneous distribution of droplets.

  3. Photocatalytic Oxidation and Reduction Chemistry and a New Process for Treatment of Pink Water and Related Contaminated Water

    Science.gov (United States)

    1996-10-01

    Influence of pH on the Degradation Kinetics of Nitrophenol Isomers in a Heterogeneous ...34 Heterogeneous Photocatalytic Degradation of Organic Water Contaminants: Kinetics and Hydroxyl Radical Mechanisms," Ph.D. Thesis, Raleigh, NC: North Carolina...Dioxide Systems : Photocatalytic Degradation of Chloro- and Nitrophenols ." Trace Met. Environ 3, no. Photocatalytic Purification and Treatment of Water

  4. Levels of PAHs in the Waters, Sediments, and Shrimps of Estero de Urias, an Estuary in Mexico, and Their Toxicological Effects

    Directory of Open Access Journals (Sweden)

    Foday M. Jaward

    2012-01-01

    Full Text Available PAHs were measured in water, sediment, and shrimps of Estero de Urias, an estuary in Sinaloa, Mexico, during the rainy and dry seasons, and analyzed for eleven PAHs routinely detected in samples. Phenanthrene was the most dominant congener in the water, sediment, and shrimp samples comprising about 38, 24, and 25%, respectively, of the eleven PAHs detected, followed by pyrene and naphthalene in water and sediment samples, and pyrene and fluorine in the shrimp samples. Total PAH concentrations ranged from 9 to 347 ng/L in water, 27 to 418 ng/g in sediments, and 36 to 498 ng/g in shrimps. The sources of contamination are closely related to human activities such as domestic and industrial discharge, automobile exhausts, and street runoff. High concentrations were also measured during the rainy season and during the first quarter of the year. Toxicity tests were also carried out, exposing fish embryos and juvenile shrimps to some of these PAHs. Fish embryos exposed to PAHs showed exogastrulation, while juvenile shrimps showed significantly lower growth rates than controls. DNA and protein alterations were also observed. These toxicity tests indicate that PAH concentrations measured could be dangerous to some aquatic organisms, particularly during early stages of development.

  5. Aplication of the statistical experimental design to optimize mine-impacted water (MIW) remediation using shrimp-shell.

    Science.gov (United States)

    Núñez-Gómez, Dámaris; Alves, Alcione Aparecida de Almeida; Lapolli, Flavio Rubens; Lobo-Recio, María A

    2017-01-01

    Mine-impacted water (MIW) is one of the most serious mining problems and has a high negative impact on water resources and aquatic life. The main characteristics of MIW are a low pH (between 2 and 4) and high concentrations of SO 4 2- and metal ions (Cd, Cu, Ni, Pb, Zn, Fe, Al, Cr, Mn, Mg, etc.), many of which are toxic to ecosystems and human life. Shrimp shell was selected as a MIW treatment agent because it is a low-cost metal-sorbent biopolymer with a high chitin content and contains calcium carbonate, an acid-neutralizing agent. To determine the best metal-removal conditions, a statistical study using statistical planning was carried out. Thus, the objective of this work was to identify the degree of influence and dependence of the shrimp-shell content for the removal of Fe, Al, Mn, Co, and Ni from MIW. In this study, a central composite rotational experimental design (CCRD) with a quadruplicate at the midpoint (2 2 ) was used to evaluate the joint influence of two formulation variables-agitation and the shrimp-shell content. The statistical results showed the significant influence (p < 0.05) of the agitation variable for Fe and Ni removal (linear and quadratic form, respectively) and of the shrimp-shell content variable for Mn (linear form), Al and Co (linear and quadratic form) removal. Analysis of variance (ANOVA) for Al, Co, and Ni removal showed that the model is valid at the 95% confidence interval and that no adjustment needed within the ranges evaluated of agitation (0-251.5 rpm) and shrimp-shell content (1.2-12.8 g L -1 ). The model required adjustments to the 90% and 75% confidence interval for Fe and Mn removal, respectively. In terms of efficiency in removing pollutants, it was possible to determine the best experimental values of the variables considered as 188 rpm and 9.36 g L -1 of shrimp-shells. Copyright © 2016 Elsevier Ltd. All rights reserved.

  6. Application of a Label-Free Immunosensor for White Spot Syndrome Virus (WSSV) in Shrimp Cultivation Water.

    Science.gov (United States)

    Waiyapoka, Thanyaporn; Deachamag, Panchalika; Chotigeat, Wilaiwan; Bunsanong, Nittaya; Kanatharana, Proespichaya; Thavarungkul, Panote; Loyprasert-Thananimit, Suchera

    2015-10-01

    White spot syndrome virus (WSSV) is a major pathogen affecting the shrimp industry worldwide. In a preliminary study, WSSV binding protein (WBP) was specifically bound to the VP26 protein of WSSV. Therefore, we have developed the label-free affinity immunosensor using the WBP together with anti-GST-VP26 for quantitative detection of WSSV in shrimp pond water. When the biological molecules were immobilized on a gold electrode to form a self-assembled monolayer, it was then used to detect WSSV using a flow injection system with optimized conditions. Binding between the different copies of WSSV and the immobilized biological molecules was detected by an impedance change (ΔZ″) in real time. The sensitivity of the developed immunosensor was in the linear range of 1.6 × 10(1)-1.6 × 10(6) copies/μl. The system was highly sensitive for the analysis of WSSV as shown by the lack of impedance change when using yellow head virus (YHV). The developed immunosensor could be reused up to 37 times (relative standard deviation (RSD), 3.24 %) with a good reproducibility of residual activity (80-110 %). The immunosensor was simple to operate, reliable, reproducible, and could be applied for the detection and quantification of WSSV in water during shrimp cultivation.

  7. Pink Eye (Conjunctivitis)

    Science.gov (United States)

    ... or child care if you're not able to take time off — just stay consistent in practicing good hygiene. Preventing pink eye in newborns Newborns' eyes are susceptible to bacteria normally present in the mother's birth canal. ...

  8. Feasibility study of white shrimp, Litopenaeus vannamei, culture in earthen ponds using brackish water of the Caspian Sea

    OpenAIRE

    Farabi, S.M.V.; Salehi, A.A.; Pourgholam, R.; Ghanei Tehrani, M.

    2016-01-01

    Litopenaeus vannamei (Boone, 1931) post-larvae 12 were obtained from Bushehr province and reared at the Caspian Sea Ecological Research Institute (Mazandaran, Iran) in summer 2012 using brackish water of the Caspian Sea. Prior to start of the experiment, post-larvae were gradually adapted to brackish water. The shrimp was stocked in a 1000 m2 earthen pond with a stocking density of 31 individual/m2. The earthen pond was in quarantine without discharge valve. During the rearing period, there w...

  9. Effects of oil-contaminated prey on the feeding, growth, and related energetics on pink salmon, Oncorhynchus gorbuscha Walbaum, fry

    International Nuclear Information System (INIS)

    Schwartz, J.P.

    1984-01-01

    Pink salmon, Oncorhynchus gorbuscha Walbaum, fry were exposed to oil contaminated prey (OCP) in a series of experiments to determine the effect of oil exposure via the diet on the ability of pink fry to survive. Brine shrimp, Artemia salina, nauplii were contaminated with petroleum hydrocarbons by exposure to the water-soluble fraction (WSF) of Cook Inlet crude oil and fed to the fish. Feeding rates were measured for 10 days using OCP and for 5 days using uncontaminated prey (post-exposure period). In a separate experiment, fry growth was measured over a 50 day period. In another experiment, fry oxygen consumption, food absorption and utilization, and ammonia excretion was measured to determine the effects of OCP on fry metabolic activity. Results indicate that exposure to OCP can reduce fry growth primarily by reducing food intake, but additional nutrition is lost from the non-absorption of ingested food. Reductions in growth could decrease fry survival, and thereby reduce the number of returning adult pink salmon

  10. Pink Eye: What To Do

    Centers for Disease Control (CDC) Podcasts

    In this podcast, CDC's Adam Cohen, MD, a pediatrician and parent, discusses conjunctivitis (pink eye), a common eye condition in children and adults. He reviews pink eye causes and treatment, suggestions on when to call or visit a doctor, and practical tips to prevent pink eye from spreading.

  11. Uptake of mercury from water by the grass shrimp, Palaemonetes vulgaris (Say)

    International Nuclear Information System (INIS)

    Ray, G.L.; Tripp, M.R.

    1976-01-01

    In order to assess the toxicity of mercury to the grass shrimp (Palaemonetes vulgaris [Say]), the lethal concentration for 50 percent (LC 50 ) of the tested population in a 24-hour period for HgCl 2 and MeHgCl were determined. The LC 50 values were approximately 400 parts per billion (ppB) Hg for HgCl 2 and 125 ppB Hg for MeHgCl. When shrimp were held in mercury solutions at sublethal concentrations (1.5 ppB Hg as HgCl 2 ) for 15 days, a maximum of 500 ppB Hg was accumulated in the animal's tissues after 3 days. The average tissue concentration of mercury for the remaining 12 days was 450 ppB Hg. The actual tissue distribution of mercury was determined by exposure of shrimp to radioactively labeled HgCl 2 and MeHgCl. No difference could be found in the tissue distribution of the two compounds. A significant difference is tissue mercury distribution occurred between the 24-hour and 72-hour exposures

  12. 78 FR 14069 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Shrimp Fishery Off the Southern...

    Science.gov (United States)

    2013-03-04

    .... Amendment 9 would also update the current overfished and overfishing status determination criteria for pink... Act before implementing a concurrent closure. Overfished and Overfishing Status Determination Criteria for Pink Shrimp Amendment 9 would update the overfished and overfishing status determination criteria...

  13. Comparative studies on the effect of gamma irradiation on decontamination and nutrient quality of smoked dry shrimp from different water sources in Ghana

    International Nuclear Information System (INIS)

    Akuamoa, F.

    2012-01-01

    Dry and smoked shrimp constitute important nutrient supplement for the populace in Ghana. Shrimp continues to represent one of the safest forms of muscle protein consumed in the world. However, the attending microbial load from the environment during drying requires concerted efforts to curtail contaminating microbes (fungi, bacteria) and other biodeterio agents (such as insects). In this study, microbiological quality (with particular reference to fungi) was studied before and after gamma irradiation (0, 4, 8 and 10 kGy), with the view of identifying potential mycotoxine-producing fungal species resident in shrimp taken from three different water sources (lagoon, sea, river) which may endanger the health of consumers. Consumer acceptance (preference) tests were performed using conventional sensory evaluation parameters (colour, taste, texture, aroma) on the samples. A structured questionnaire was employed to ascertain biodata, educational background, storage and packaging practices of the traders. The storage stability of the shrimp was determined by sorption isotherms using glycerol: water mixtures to stimulate Environmental Relative Humidity (20, 55, 65, 75, 85 and 95% Eh) for 20 days. Population of fungi was ascertained on two media (Ogee, D RBC) using the conventional decimal serial dilution technique up to 1:10 4 ; Total Aerobic Bacteria was determined on Pca at 32 degrees Celsius for 48 hours. Insects in the samples were determined by the Hidden Identification technique; Crude protein was estimated by the Kjeldhal method and total ash was determined using the Carbolite furnace. Percentage fat and moisture contents were determined concurrently using the Miniature Bench Top Nuclear Magnetic Resonance (BTNMR); Elemental composition was estimated by Atomic Absorption Spectrometry (AAS). The Flame Photometer was used in the determination of sodium and potassium contents of samples. Minolta Chroma Meter was used to measure the colour L*a*b value scale. Twenty

  14. The use of chitosan as bioadhesive and its property improvement by radiation treatment for water-stable shrimp feed production

    Energy Technology Data Exchange (ETDEWEB)

    Lam, Nguyen Duy; Hung, Nguyen Manh; Quynh, Tran Minh; Diep, Tran Bang; Binh, Nguen Van [Vietnam Atomic Energy Commission, Institute for Nuclear Science and Techniques, Caugiay, Hanoi (Viet Nam); Dung, Vu [Ministry of Fisheries, Research Institute of Marine Product, Haiphong (Viet Nam); Kume, Tamikazu [Japan Atomic Energy Research Inst., Takasaki, Gunma (Japan). Takasaki Radiation Chemistry Research Establishment

    2002-03-01

    Among marine polysaccharides, only chitosan with small content in feed (0.48-0.75%) could be selected to prepare shrimp feed-pellet having so high water-stability that meet the Standard of Vietnam Ministry of Fisheries 28-TCN 102/1997. Solid-state radiation treatment of chitosan with dose ranging from 10 to 200 kGy not only increased its solubility in solvents of dilute acid, but also improved the water-stability of feed-pellet product. Radiation treatment at sterilization doses (20-40 kGy) was evaluated as the most practical technology because irradiated chitosan with reduced content of 0.34% has capacity to be prepared feed-pellets stable as comparable to imported products. Results from feeding trials shown that chitosan containing feed did not affect the growth response and feed utilization efficiency such as weight gain (WG), feed conversion ratio (FCR) and productivity at harvest. (author)

  15. Pink-line syndrome

    Digital Repository Service at National Institute of Oceanography (India)

    Ravindran J.; Raghukumar, C.; Manikandan, B.

    , a physiological crisis in the scleractinian coral Porites lutea. Marine biology 149: 347-356 7. Ravindran J, Raghukumar C (2006a) Histological observations on the scleractinian coral Porites lutea affected by pink-line syndrome. Current science... handbook: guidelines for assessment and monitoring. Currie Communications, Melbourne, Australia, 94p+App 10. Vargas-Angel B, Wheeler B (2009) Coral health and disease assessment in the US Pacific territories and affiliated states. Proc. 11th Coral Reef...

  16. A review of the chemical aspects of irradiated shrimp

    International Nuclear Information System (INIS)

    Shamsuzzaman, K.

    1989-09-01

    The literature was reviewed for information on the chemical aspects of irradiated shrimp. Low-dose irradiation can effectively control spoilage and pathogenic organisms and extend the refrigerated shelf life of shrimp. Radiation-induced increases in black discoloration occur in some species during storage, but can be minimized by proper blanching. Some loss of the characteristic pink color occurs at doses above 2.5 kGy, and irradiation off-odors occur above 1.5 kGy. These changes can be minimized by irradiating the shrimp when they are frozen. No significant change in protein, fat, carbohydrate, and ash content occurs as a result of low-dose irradiation. Low-dose irradiation does not produce any detectable change in the levels of volatile carbonyl compounds; irradiation at 8 kGy results in a transient increase in the total volatile compounds during subsequent storage in ice, but the increase is higher in the unirradiated shrimp. Radiation-induced changes in the fatty acid composition of shrimp are small. Some minor changes in the amino acid composition occur in irradiated shrimp; similar changes occur due to other processes such as canning and drying in hot air. Some vitamins in shrimp such as thiamine are affected by irradiation. But the loss is less extensive than in thermally processed shrimp. The protein efficiency ratio is not affected by irradiation of shrimp, and no adverse effects attributed to irradiation were found in animal feeding studies

  17. Pink Eye: What To Do

    Centers for Disease Control (CDC) Podcasts

    2010-10-12

    In this podcast, CDC's Adam Cohen, MD, a pediatrician and parent, discusses conjunctivitis (pink eye), a common eye condition in children and adults. He reviews pink eye causes and treatment, suggestions on when to call or visit a doctor, and practical tips to prevent pink eye from spreading.  Created: 10/12/2010 by National Center for Immunization and Respiratory Diseases (NCIRD).   Date Released: 10/13/2010.

  18. Spatio-temporal variation of the pink shrimp Farfantepenaeus paulensis (Crustacea, Decapoda, Penaeidae associated to the seasonal overture of the sandbar in a subtropical lagoon Variação espaço-temporal do camarão rosa Farfantepenaeus paulensis (Crustacea, Decapoda, Penaeidae associado à abertura sazonal da barra de conexão com o mar em uma lagoa subtropical

    Directory of Open Access Journals (Sweden)

    Nicolle C Ferreira

    2009-12-01

    Full Text Available On the southern Brazilian coast, the penaeid pink shrimp Farfantepenaeus paulensis (Pérez-Farfante, 1967 is intensively captured by both artisanal and industrial fisheries. In the Ibiraquera Lagoon, artisanal fishing of juvenile stocks has declined sharply over the last 15 years. The traditional management methods used by fishermen are no longer sustainable due to conflicts with the demands of tourism and weak environmental and public agencies. The dynamics of the timing of the artificial opening and natural reformation of a sandbar across the mouth of the lagoon are regarded as a central socio-ecological problem. We evaluated the abundance and biomass variation of F. paulensis throughout the year and along a spatial gradient measured from the sandbar into the lagoon. We also explored the influence of opening the sandbar on the shrimp population. Samples were collected monthly from February 2004 to February 2005, using a 27 mm mesh cast net, in four different areas, with three sites being sampled per area. Small numbers of large shrimps were captured in the upper area, while greater biomass and abundance of small shrimps were observed near the sandbar, suggesting the role of the inner area as a refuge for growing. The highest records for biomass and abundance were recorded during warm months, regardless if the lagoon was open or closed by the sandbar. The Ibiraquera Lagoon could be more productive for fishermen if the sandbar opening was coincident to the period of natural post-larvae influx. Furthermore, coastal stocks could be improved by opening the sandbar again during summer in conjunction with fishing quotas.O camarão rosa Farfantepenaeus paulensis (Pérez-Farfante, 1967 é intensivamente capturado, tanto pela frota pesqueira industrial quanto artesanal na costa sul brasileira. Na Lagoa de Ibiraquera (SC, a captura artesanal de camarões tem diminuído gradativamente nos últimos 15 anos. Os métodos de gestão tradicionais utilizados

  19. 2012 Economic Survey of Gulf State Shrimp License Holders

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This mail survey collected economic data on inshore commercial shrimp fishermen who held licenses to commercially harvest shrimp in state waters of the U.S. Gulf of...

  20. Shape, colour plasticity, and habitat use indicate morph-specific camouflage strategies in a marine shrimp.

    Science.gov (United States)

    Duarte, Rafael C; Stevens, Martin; Flores, Augusto A V

    2016-10-18

    Colour and shape polymorphisms are important features of many species and may allow individuals to exploit a wider array of habitats, including through behavioural differences among morphs. In addition, differences among individuals in behaviour and morphology may reflect different strategies, for example utilising different approaches to camouflage. Hippolyte obliquimanus is a small shrimp species inhabiting different shallow-water vegetated habitats. Populations comprise two main morphs: homogeneous shrimp of variable colour (H) and transparent individuals with coloured stripes (ST). These morphs follow different distribution patterns between their main algal habitats; the brown weed Sargassum furcatum and the pink-red weed Galaxaura marginata. In this study, we first investigated morph-specific colour change and habitat selection, as mechanisms underlying camouflage and spatial distribution patterns in nature. Then, we examined habitat fidelity, mobility, and morphological traits, further indicating patterns of habitat use. H shrimp are capable of changing colour in just a few days towards their algal background, achieving better concealment in the more marginal, and less preferred, red weed habitat. Furthermore, laboratory trials showed that habitat fidelity is higher for H shrimp, whereas swimming activity is higher for the ST morph, aligned to morphological evidence indicating these two morphs comprise a more benthic (H) and a more pelagic (ST) life-style, respectively. Results suggest that H shrimp utilise a camouflage strategy specialised to a limited number of backgrounds at any one time, whereas ST individuals comprise a phenotype with more generalist camouflage (transparency) linked to a more generalist background utilisation. The coexistence within a population of distinct morphotypes with apparently alternative strategies of habitat use and camouflage may reflect differential responses to substantial seasonal changes in macroalgal cover. Our findings

  1. The Brine Shrimp Artemia Survives in Diluted Water of Lake Bunyampaka, an Inland Saline Lake in Uganda

    Directory of Open Access Journals (Sweden)

    Martin Sserwadda

    2018-02-01

    Full Text Available Ugandan aquaculture is in the process of development; however, it requires access to an affordable live food source, such as brine shrimp Artemia. This study fits within a broader feasibility study of domestic Artemia production in salt lakes. Since Uganda is a landlocked country, the only opportunity for live water food sources lies in the salt lakes in the west of the country. This study used saline water from one of these lakes, Lake Bunyampaka (salinity 72 mg L−1. Two Artemia strains, i.e., the Great Salt Lake strain, which is the dominant strain on the market, and the Vinh Chau strain, which is by far the most inoculated strain in the world, were assayed for their survival, growth, and reproduction in diluted Lake Bunyampaka water, using natural seawater as control. The organisms were fed live freshly cultured microalgae Tetraselmis suecica ad libitum. Our study revealed that the Vinh Chau strain performed especially well in Lake Bunyampaka water diluted to 50 g L−1. The data presented in this study generate the first useful information for the future inoculation of Artemia in Lake Bunyampaka in Uganda, and hence domestic Artemia production in the country; however, further larger-scale laboratory work, followed by field trials, is still needed.

  2. Identification of biofloc microscopic composition as the natural bioremediation in zero water exchange of Pacific white shrimp, Penaeus vannamei, culture in closed hatchery system

    Science.gov (United States)

    Manan, Hidayah; Moh, Julia Hwei Zhong; Kasan, Nor Azman; Suratman, Suhaimi; Ikhwanuddin, Mhd

    2017-09-01

    Study on the microscopic composition of biofloc in closed hatchery culture system was carried out to determine the interaction between the aggregation flocs in the bioremediation process for the decomposition and degradation of organic matter loaded in the shrimp culture tanks. The study was done for 105 days of culture period in zero water exchange. All of the organic loaded in the culture tanks identified comes from the shrimp feces, uneaten fed, and the decomposed macro- and microorganisms died in the culture tanks. All of the microscopic organisms in the biofloc were identified using Advance microscopes Nikon 80i. From the present study, there were abundances and high varieties of phytoplankton, zooplankton, protozoa, nematodes and algae species identified as aggregates together in the flocs accumulation. All of these microscopic organisms identified implemented the symbiotic process together for food supply, become the algae grazer, act as natural water stabilizer in regulating the nutrients in culture tank and serve as decomposer for dead organic matter in the water environment. Heterotrophic bacteria identified from Pseudomonas and Aeromonas family consumed the organic matter loaded at the bottom of culture tank and converted items through chemical process as useful protein food to be consumed back by the shrimp. Overall it can be concluded that the biofloc organisms identified really contributed as natural bioremediation agents in zero water exchange culture system to ensure the water quality in the optimal condition until the end of culture period.

  3. Survival of pink salmon (Oncorhynchus gorbuscha) fry to adulthood following a 10-day exposure to aromatic hydrocarbon water-soluble fraction of crude oil and release to the Pacific Ocean

    International Nuclear Information System (INIS)

    Birtwell, I. K.; Fink, R.; Brand, D.; Alexander, R.; McAllister, C. D.

    1999-01-01

    Potential effects of hydrocarbons on salmonids were investigated. In the course of the experiment pink salmon fry were exposed for 10 days to seawater containing varying controlled doses of the water-soluble fractions of North Slope crude oil, comprised primarily of monoaromatics. After exposure the fry were released into the Pacific Ocean to complete their life cycle. The experiments were replicated for three years following the original experiment. No consistent dose-dependent effect of the 10-day exposure on the growth and survival to maturity of the pink salmon was observed, although there was high mortality following each initial release. These results may be considered as one measure of resistance to exposure to contaminants, however, the method is not recommended for general use because it is based on a highly selected sample (i.e. those that survived the initial exposure), and the same results may not apply to populations that have not been subjected to intensive nonselective fishing pressures. In summary, the survival of some fraction of the population of pink salmon is evidence of the robustness of some of these fish, but it is at best a crude indicator of environmental health. 44 refs., 2 tabs., 2 figs

  4. Arbitrary mangrove-to-water ratios imposed on shrimp farmers in Vietnam contradict with the aims of sustainable forest management.

    Science.gov (United States)

    Baumgartner, Urs; Kell, Shelagh; Nguyen, Tuan Hoang

    2016-01-01

    Worldwide, an estimated 35 % of mangrove forests have been lost between 1980 and 2005-among other reasons due to expansion of aquaculture production systems. In Vietnam, where the total mangrove area decreased from 269,150 ha in 1980 to 157,500 ha in 2000, regulation of such systems in the form of 'mangrove-to-water surface ratio' has had limited success to halt these losses. In this study, a survey of 40 Vietnamese households was conducted in mangrove production forests in Rach Goc commune, Ngoc Hien district, Ca Mau province to understand whether fixed limits on minimal mangrove coverage influence farmers' decisions on mangrove protection. Results of the survey suggest that rural households greatly depend on the incomes generated from shrimp (and crab) farming but that they do not have a share in economic incentives from timber harvests due to lack of full ownership. A strong relationship between mangrove coverage and per pond area income was also revealed. Because farmers are not aware of applicable laws in terms of mangrove-to-water ratios, mangrove coverage tends to shift in favour of higher pond areas. Overall, the findings indicate that regulations in the form of universal mangrove-to-water ratios do not consider the realities of local households, nor are they economically or environmentally useful-rather, they appear to be arbitrary limitations that are not respected by affected communities. The findings question the efficiency of efforts put into stricter enforcement.

  5. Métodos de extrusão manual e elétrica dos espermat��foros de reprodutores selvagens do camarão-rosa Farfantepenaeus paulensis (Decapoda: Penaeidae Manual and electrical spermatophore extrusion methods of the pink shrimp Farfantepenaeus paulensis (Decapoda: Penaeidae wild broodstock

    Directory of Open Access Journals (Sweden)

    Cintia Nakayama

    2008-10-01

    Full Text Available O presente estudo comparou os métodos manual e elétrico de extrusão do espermatóforo do camarão-rosa Farfantepenaeus paulensis com o objetivo de verificar se os métodos de extrusão exercem influência na quantidade de células espermáticas e na regeneração de novos espermatóforos. Os machos foram extrusados no início (dia zero e no final do experimento (dia 43 para verificação da eficiência dos métodos no processo de regeneração. A extrusão manual foi realizada por meio de pressão na região do quinto par de pereiópodos e o método elétrico com uso de eletrodo para transmissão de impulso elétrico de 9 volts na mesma região. Os dois métodos foram considerados eficientes, não sendo encontradas diferenças significativas entre estes (P>0,05 para o número de células espermáticas. Entretanto, foi verificada, no final do experimento, a perda de peso corporal, peso de espermatóforo e menor índice espermatossomático (IES (PThe present study compared manual and electrical methods to extrude the spermatophore of the pink shrimp Farfantepenaeus paulensis aiming to analyze their influence on the number of spermatic cells and spermatophore regeneration. The males were extruded in the beginning (day zero and in the end (43rd day of the experiment to evaluate the efficiency of these methods in the regeneration process. For the extrusion, a gentle pressure was applied manually in the fifth pair of pereiopods or electrically by a 9 volt pulse in the same area. Both methods were efficient in removing the spermatophore and no significant differences were found (P>0.05 in the number of sperm cells. Nevertheless, significant decreases (P<0.05 in the body weight, spermatophore weight and spermatosomatic index (ESI at the end of the experimental period were observed by using the electrical stimulation. The mean values (±SD of the number of sperm cells were 1.46 (±0.84 and 3.25 (±2.12 millions for the electrical and manual treatments

  6. Effect of Sucrose as Carbon Source and Probiotic Administrations on Bacterial Population Dinamic and Water Quality in White Shrimp, Litopenaeus vannamei Culture

    Directory of Open Access Journals (Sweden)

    . Sukenda

    2007-07-01

    Full Text Available Disinfection and nutrient enrichment prior stocking of  post larvae in the pond will be affected on the growth and composition of microbe.  Attention should be taken to some factors related to deterministic and stochastic factors of aquaculture environment  in order to develop microbe community.  This study was performed to determine effect of sucrose and probiotic supplementation to shrimp culture pond on water quality profile and population dynamic on shrimp culture media.  The treatments were supplementation of sucrose as carbon source, probiotic, and sucrose + probiotic into 25 L culture medium containing white shrimp, Litopenaeus vannamei.  Shrimp were fed commercial diet containing 30% protein by 5% body weight every day.  The result of study showed that bacterial population was increased by increasing time of shrimp rearing.  Increased of bacterial population was contrary to DO value.   Bacteria grew was heterotrop and vibrio that its intensity varied during experiment.  Supplementation of sucrose supported proliferation of bacteria including heterotrop, probiotik and vibrio groups.  Specifically, interaction between probiotic bacteria and vibrio was also found.  The presence of probiotic bacteria showed a negative impact on vibrio population.  Further, development of bacteria in general was also implicated to fluctuation of ammonia concentration in pond. Keywords: carbon, sucrose, probiotic, white shrimp, Litopenaeus vannamei   ABSTRAK Kegiatan disinfeksi dan pengkayaan nutrien sebelum penebaran PL akan mempengaruhi pola pertumbuhan dan komposisi mikroba di tambak. Hal-hal yang perlu diperhatikan dalam pengembangan komunitas mikroba adalah faktor-faktor deterministic dan sthocastic masing-masing lingkungan budidaya. Penelitian ini dilakukan untuk mengetahui pengaruh pemberian bahan berkarbon (sukrosa dan probiotik di tambak terhadap profil kualitas air serta dinamika populasi pada perairan budidaya. Pada penelitian ini

  7. Reproductive traits of tropical deep-water pandalid shrimps ( Heterocarpus ensifer) from the SW Gulf of Mexico

    Science.gov (United States)

    Briones-Fourzán, Patricia; Barradas-Ortíz, Cecilia; Negrete-Soto, Fernando; Lozano-Álvarez, Enrique

    2010-08-01

    Heterocarpus ensifer is a tropical deep-water pandalid shrimp whose reproductive features are poorly known. We examined reproductive traits of a population of H. ensifer inhabiting the continental slope (311-715 m in depth) off the Yucatan Peninsula, Mexico (SW Gulf of Mexico). Size range of the total sample ( n=816) was 10.4-38.9 mm carapace length. Females grow larger than males, but both sexes mature at 57% of their maximum theoretical size and at ˜30% of their total lifespan. Among adult females, the proportion of ovigerous females was high in all seasons, indicating year-round reproduction. Most females carrying embryos in advanced stages of development had ovaries in advanced stages of maturation, indicating production of successive spawns. In the autumn, however, the proportion of ovigerous females and the condition index of these females were lower compared to other seasons. This pattern potentially reflects a reduction in food resources following the summer minimum in particulate organic carbon flux to the deep benthos, as reported in previous studies. Spawns consisting of large numbers (16024±5644, mean±SD) of small eggs (0.045±0.009 mm 3) are consistent with extended planktotrophic larval development, an uncommon feature in deep-water carideans. Egg number increased as a power function of female size but with substantial variability, and egg size varied widely within and between females. There was no apparent trade-off between egg number and egg size and neither of these two variables was influenced by female condition. These results indicate iteroparity and a high and variable reproductive effort, reflecting a reproductive strategy developed to compensate for high larval mortality. The present study provides a baseline to compare reproductive traits between Atlantic populations of this tropical deep-water pandalid.

  8. PINK1-Interacting Proteins: Proteomic Analysis of Overexpressed PINK1

    Directory of Open Access Journals (Sweden)

    Aleksandar Rakovic

    2011-01-01

    Full Text Available Recent publications suggest that the Parkinson's disease- (PD- related PINK1/Parkin pathway promotes elimination of dysfunctional mitochondria by autophagy. We used tandem affinity purification (TAP, SDS-PAGE, and mass spectrometry as a first step towards identification of possible substrates for PINK1. The cellular abundance of selected identified interactors was investigated by Western blotting. Furthermore, one candidate gene was sequenced in 46 patients with atypical PD. In addition to two known binding partners (HSP90, CDC37, 12 proteins were identified using the TAP assay; four of which are mitochondrially localized (GRP75, HSP60, LRPPRC, and TUFM. Western blot analysis showed no differences in cellular abundance of these proteins comparing PINK1 mutant and control fibroblasts. When sequencing LRPPRC, four exonic synonymous changes and 20 polymorphisms in noncoding regions were detected. Our study provides a list of putative PINK1 binding partners, confirming previously described interactions, but also introducing novel mitochondrial proteins as potential components of the PINK1/Parkin mitophagy pathway.

  9. TENDENCIES AND PECULIARITIES OF SHRIMP FEED PRODUCTION

    Directory of Open Access Journals (Sweden)

    LIUDMYLA V. FIHURSKA

    2018-04-01

    Full Text Available Aquaculture is food sector, which is growing rapidly in the last 25 years with annual growth rate 8,2 . One of the mostperspective branches of aquaculture is shrimp farming. The cost of feeds is up to 80% of the cost of shrimp breeding, so providingthe industry with high-quality feeds is the important goal of the feed industry in all over the world. The theoretical research was devotedto the task of compound shrimp feed production. In order to satisfy shrimp requirements, shrimp feeding systems were shown.Existing shrimp breeding systems are shown as different from the type of reservoirs (static / running water, indoor or outdoor, feedingmethods, and the species of grown shrimp. Features of the nutritional standards for freshwater and saltwater shrimps were analyzed.Nutrient requirements of shrimp have been changed through shrimp life-cycle. The shrimp life-cycle was shown.World leaders-producers of compound mixed feeds for shrimps were shown. The analysis of pellet size and nutritional valueof compound mixed feeds of crude protein content in prestart, starter, grower and finish periods of cultivation and in accordancewith the system of cultivation and feeding shrimp (intensive, extensive, semi-intensive is carried out. The requirements for the contentof main minerals, vitamins and restrictions to the content of crude fiber are given. Traditional ingredients are described. Bindersand preservatives, which are used for shrimp feeds, are shown and subscribed. In raw material the main problem is the need to ensurehigh protein content in the shrimp feed recipes. Because of many factors, fish meal quantity should be reduced in recipes. Becauseof its attractive amino acid content, availability and relatively affordable price, soybean meal and soy concentrates have receivedincreasing attention as substitutes for marine animal meals.The features of technological lines and processes of production of mixed feeds for shrimp are shown.Еhe advantages and

  10. Administration of Bacillus subtilis strains in the rearing water enhances the water quality, growth performance, immune response, and resistance against Vibrio harveyi infection in juvenile white shrimp, Litopenaeus vannamei.

    Science.gov (United States)

    Zokaeifar, Hadi; Babaei, Nahid; Saad, Che Roos; Kamarudin, Mohd Salleh; Sijam, Kamaruzaman; Balcazar, Jose Luis

    2014-01-01

    In this study, vegetative cell suspensions of two Bacillus subtilis strains, L10 and G1 in equal proportions, was administered at two different doses 10(5) (BM5) and 10(8) (BM8) CFU ml(-1) in the rearing water of shrimp (Litopenaeus vannamei) for eight weeks. Both probiotic groups showed a significant reduction of ammonia, nitrite and nitrate ions under in vitro and in vivo conditions. In comparison to untreated control group, final weight, weight gain, specific growth rate (SGR), food conversion ratio (FCR) and digestive enzymatic activity were significantly greater in the BM5 and BM8 groups. Significant differences for survival were recorded in the BM8 group as compared to the control. Eight weeks after the start of experiment, shrimp were challenged with Vibrio harveyi. Statistical analysis revealed significant differences in shrimp survival between probiotic and control groups. Cumulative mortality of the control group was 80%, whereas cumulative mortality of the shrimp that had been given probiotics was 36.7% with MB8 and 50% with MB5. Subsequently, real-time RT-PCR was employed to determine the mRNA levels of prophenoloxidase (proPO), peroxinectin (PE), lipopolysaccharide- and β-1,3-glucan- binding protein (LGBP) and serine protein (SP). The expression of all immune-related genes studied was only significantly up-regulated in the BM5 group compared to the BM8 and control groups. These results suggest that administration of B. subtilis strains in the rearing water confers beneficial effects for shrimp aquaculture, considering water quality, growth performance, digestive enzymatic activity, immune response and disease resistance. Copyright © 2013 Elsevier Ltd. All rights reserved.

  11. Effects of sonication and advanced chemical oxidants on the unicellular green alga Dunaliella tertiolecta and cysts, larvae and adults of the brine shrimp Artemia salina: a prospective treatment to eradicate invasive organisms from ballast water.

    Science.gov (United States)

    Gavand, Meghana R; McClintock, James B; Amsler, Charles D; Peters, Robert W; Angus, Robert A

    2007-11-01

    Uptake and release of ship-borne ballast water is a major factor contributing to introductions of aquatic phytoplankton and invasive macroinvertebrates. Some invasive unicellular algae can cause harmful algal blooms and produce toxins that build up in food chains. Moreover, to date, few studies have compared the efficacy of ballast water treatments against different life history phases of aquatic macroinvertebrates. In the present study, the unicellular green alga Dunaliella tertiolecta, and three discrete life history phases of the brine shrimp Artemia salina, were independently used as model organisms to study the efficacy of sonication as well as the advanced oxidants, hydrogen peroxide and ozone, as potential ballast water treatments. Algal cells and brine shrimp cysts, nauplii, and adults were subjected to individual and combined treatments of sonication and advanced oxidants. Combined rather than individual treatments consistently yielded the highest levels of mortality in algal cells (100% over a 2 min exposure) and in brine shrimp (100% and 95% for larvae and adults, respectively, over a 2 min exposure). In contrast, mortality levels in brine shrimp cysts (66% over 2 min; increased to 92% over a 20 min exposure) were moderately high but consistently lower than that detected for larval or adult shrimp. Our results indicate that a combination of sonication and advanced chemical oxidants may be a promising method to eradicate aquatic unicellular algae and macroinvertebrates in ballast water.

  12. Coral by-catch in shrimp bottom trawl surveys in West Greenland waters (2010 – 2012)

    DEFF Research Database (Denmark)

    Jørgensbye, Helle; Arboe, Nanette Hammeken

    There have been zoological expeditions in Greenland waters since the 19th century documenting the sea life, including cold water corals. Coral trees (vernacular name for Paragorgia arborea) are mentioned as early as 1741 in the first natural history book about Greenland (Egede 1741). Due to the m......There have been zoological expeditions in Greenland waters since the 19th century documenting the sea life, including cold water corals. Coral trees (vernacular name for Paragorgia arborea) are mentioned as early as 1741 in the first natural history book about Greenland (Egede 1741). Due....... The identification of the corals is based on Kenchington et al. (2009). The identification of many specimens has further been verified by Ole Tendal (Zoological Museum, Copenhagen) on the basis of frozen samples. Few corals, mainly soft corals (Alcyonacea) and sea pens (Pennatulacea), were found in the depth range...

  13. Dietary administration of Gynura bicolor (Roxb. Willd.) DC water extract enhances immune response and survival rate against Vibrio alginolyticus and white spot syndrome virus in white shrimp Litopeneaus vannamei.

    Science.gov (United States)

    Wu, Chih-Chung; Chang, Yueh-Ping; Wang, Jyh-Jye; Liu, Chun-Hung; Wong, Saou-Lien; Jiang, Chii-Ming; Hsieh, Shu-Ling

    2015-01-01

    Gynura bicolor (Roxb. & Willd.) DC., a perennial plant belonging to the Asteraceae family, is originated from the tropical area of Asia. The total hemocyte count (THC), phenoloxidase (PO) activity, respiratory bursts (RBs), superoxide dismutase (SOD) activity, and lysozyme activity were examined after white shrimp Litopenaeus vannamei had been fed diets containing the water extract of G. bicolor at 0 (control), 0.5, 1.0, and 2.0 g (kg diet)(-1) for 7-28 days. The results indicated that these parameters increased accordingly with the amount of extract and time. THCs of the shrimp fed the G. bicolor diets at 1.0 and 2.0 g (kg diet)(-1) were significantly higher than that fed the control diet for 14-28 days. For the shrimp fed the G. bicolor diets at 0.5, 1.0, and 2.0 g (kg diet)(-1), the PO, RBs, and lysozyme activities reached the highest levels after 7 days, whereas SOD activity reached the highest levels after 14 days. In a separate experiment, white shrimp L. vannamei fed the diets containing the G. bicolor extract for 28 days were challenged with Vibrio alginolyticus at 3 × 10(6) cfu shrimp(-1) and white spot syndrome virus (WSSV) at 1 × 10(3) copies shrimp(-1). The survival rate of the shrimp fed the G. bicolor diets was significantly higher than that of the shrimp fed the control diet at 48-144 h post challenge V. alginolyticus and WSSV. For the shrimp fed the G. bicolor diets at 0.5, 1 and 2 g (kg diet)(-1) under challenges of V. alginolyticus and WSSV, their LPS- and β-1,3-glucan-binding protein (LGBP) and peroxinectin (PE) mRNA expressions were significantly higher than those of the challenged control shrimp at 12-96 and 24-144 h post-challenge, respectively. We concluded that dietary administration of a G. bicolor extract could enhance the innate immunity within 28 days as evidenced by the increases in immune parameters (PO, RBs, and lysozyme) and antioxidant enzyme (SOD) activities of shrimp to against V. alginolyticus and WSSV

  14. Estudo populacional do camarão-rosa Penaeus Paulensis pérez farfante (natantia, penaeidae na Lagoa da Conceiçáo, Santa Catarina, Brasil Populational study of the pink-shrimp Penaeus Paulensis pérez farfante (natantia, penaeidae in the Conceição Lake, Florianópolis, Santa Catarina, Brazil

    Directory of Open Access Journals (Sweden)

    Joaquim Olinto Branco

    1998-01-01

    Full Text Available In the time period between May/92 to April/93, 2693 (1243 males and 1450 females specimens of Penaeus paulensis Pérez Farfante, 1967 were collected. The shrimps were captured by night using a hand net in äreas between 30 to 150 cm deep. The abundance of P. paulensis is regulated mainly by the temperature, the summer being the season of greater profusion. The major recruiting period takes place in the Spring with shrimps measuring between 1,0 to 3,0 cm and approximately 2,0 months old. The population reaches the pre-adult in the Fall-Winter period with average length between 8,8 cm (females and 9,3 cm (males. The migration to the ocean occurs during the Winter. The artisanal fishing in the Conceição Lake is predatory, acting upon the young and pre-adult shrimps, which may jeopardize the marine reproducer stock.

  15. Shrimp Survey Data

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Northern Shrimp Survey was initiated in 1983 by the Atlantic States Marine Fisheries Commission (ASMFC) and monitors the relative abundance (number of shrimp),...

  16. Brown shrimp abundance in northwest European coastal waters in the period 1970 - 2010 and potential causes for contrasting trends

    NARCIS (Netherlands)

    Tulp, I.Y.M.; Bolle, L.J.; Meesters, H.W.G.; Vries, de P.

    2012-01-01

    We investigated long-term trends in abundance of the NE Atlantic population of brown shrimp Crangon crangon based on data collected in annual autumn surveys carried out along the coasts of the North Sea in The Netherlands, Germany and Denmark. Surveys covered some estuaries and intertidal areas, as

  17. Modelling receiving water quality responses to brackishwater shrimp aquaculture farm effluents

    International Nuclear Information System (INIS)

    Roy Chaudhury, R.K.; Ramana Murty, V.; Ravindran, M.

    1999-01-01

    The objective was to perform a waste load allocation and determine the extent of aquaculture that the creeks can sustain, by meeting the water quality criteria for both the creek ecosystem and pond culture. Based on these results, similar assessments may be performed for other sites supporting large scale aquaculture activities. This paper introduces the sampling program and modelling methodology of the study

  18. DIAGNOSIS OF SHRIMP TRAWLING IN THE STATE OF PERNAMBUCO, BRAZIL

    Directory of Open Access Journals (Sweden)

    Carlos Eduardo Rangel Andrade

    2016-09-01

    Full Text Available With a technical approach, this diagnosis aims to fill a gap in the overview of the activity, considering its technical aspects that manage the fishing effort of shrimping of Penambuco. From October 2013 to August 2014, the fishing grounds were identified used in this activity, as well as the fishing method, the number of boats and fishermen acting, type of boat and gears used. Analyses were performed with the major communities operating in this fishery (Recife, Jaboatão dos Guararapes, Barra de Sirinhaém and São Jose da Coroa Grande. The analyzes of the catch were tested using one-way ANOVA (α 5%. They observed two traditional types: the beach seining and trawing. It was cataloged about 50 vessels in the activity, with approximately 100 fishermen. They are caught mainly three types of shrimp: pink (Farfantepenaeus spp., Seabob (Xiphopenaeus kroyeri and white (Lithopenaeus schmitii. Statistical data concentrated in the metropolitan area of Recife and Barra de Sirinhaém. There seems to be a direct relationship rainfall with shrimp production because with increased rainfall, there is a higher volume of landing fishery. Barra de Sirinhaém is the main area used in the State. Keywords: ‘mangote’; trawling fishing; pink shrimp; Farfantepenaeus spp.

  19. adoption of improved aquaculture practices by shrimp farmers

    African Journals Online (AJOL)

    Dr.Adesope

    use of check trays and adjustment of feed accordingly (95.0%), formation of ... Key words: adoption, improved aquaculture, shrimp farmers ... Brackish water shrimp farming is getting more attention because of high profitability ..... water and pond water whereas 52.5% of farmers did not observe the actual acclimatisation.

  20. Occurrence of white spot syndrome virus in shrimp culturing waters and its brunt in specific pathogen free Litopenaeus vannamei with particular allusion to molecular verdicts

    Directory of Open Access Journals (Sweden)

    MA Badhul Haq

    2012-12-01

    Full Text Available Objective: To detect the water samples and shrimp samples in white spot syndrome virus (WSSV affecting and non-affecting zone. Methods: A total of 12 samples specific pathogen free Litopenaeus vannamei (L. vannamei; adult shrimp and larvae were randomly collected. Their genomic DNA was isolated and subjected to PCR. Histopathological identifications were carried out, and the hematopoietic tissues with basophilic intranuclear inclusion bodies characteristic were observed in moderate WSSV infected L. vannamei. Results: The PCR analysis showed the appearance of a prominent band from the PCR amplified product of WSSV-DNA at internal control band 848 bp at non-infected areas. Although low infection positive bands (20 copies were shown at 296 bp continued from initial stage of the infection region. On a moderate and ascetic level were observed as 650 bp and 910 bp (200 and 2 000 copies, during the severe out break periods. The gill epithelial cells were edematous and nuclei were hypertrophied with basophilic inclusions, but no pathological changes or hypertrophied nuclei were observed in any of L.vannamei tissues in WSSV uninfected region. The Intranuclear inclusion bodies characteristics of high level of WSSV infection presented in the gill region. Conclusions: The present study is significant, which investigated the level of WSSV transmission from the infected tiger prawn P.monodon to SPFL. vannamei in the WSSV impact region of Tamil Nadu coastal waters.

  1. Competitiveness of Indonesian Shrimp Compare with Thailand Shrimp in Export Market

    Directory of Open Access Journals (Sweden)

    Lina Asmara Wati

    2013-09-01

    Full Text Available With the water area accounts for 81 percent of the total area, fishery is a major business in Indonesia. As one of the world's largest shrimp exporting countries, Indonesia also relies on the revenues of shrimp exports in the international markets. This research compared the competitiveness of shrimp export from Indonesia and Thailand to Japan and US. The indicator adopted in this research was the RCA index. In this research collected secondary data from 1989 to 2010 for analysis. Results showed RCA values of Indonesia were higher than 1, which indicates advantaged competitiveness of Indonesia shrimp exports in the liberalized markets. Nevertheless, compared with Thailand, Indonesia remained relatively disadvantaged. To reinforce the Indonesian shrimp export, necessary infrastructure, such as networks shipment or delivery, packaging and transportation, must be improved. Further researches to determine the factors affecting competitiveness of export shrimp in liberalized market, make and analyze for the policy strategy formulation of Indonesia shrimp export in liberalized market are also advised.Keywords: Competitiveness; Indonesian Shrimp Export; RCA.

  2. Characterization and in-vivo evaluation of potential probiotics of the bacterial flora within the water column of a healthy shrimp larviculture system

    Science.gov (United States)

    Xue, Ming; Liang, Huafang; He, Yaoyao; Wen, Chongqing

    2016-05-01

    A thorough understanding of the normal bacterial flora associated with shrimp larviculture systems contributes to probiotic screening and disease control. The bacterial community of the water column over a commercial Litopenaeus vannamei larval rearing run was characterized with both culture-dependent and culture-independent methods. A total of 27 phylotypes at the species level were isolated and identified based on 16S rDNA sequence analysis. Denaturing gradient gel electrophoresis (DGGE) analysis of the V3-V5 region of 16S rRNA genes showed a dynamic bacterial community with major changes occurred from stages zoea to mysis during the rearing run. The sequences retrieved were affiliated to four phyla, Proteobacteria, Actinobacteria, Bacteroidetes, and Firmicutes, with the family Rhodobacteraceae being the most frequently recovered one. Subsequently, 13 representative strains conferred higher larval survival than the control when evaluated in the in-vivo experiments; in particular, three candidates, assigned to Phaeobacter sp., Arthrobacter sp., and Microbacterium sp., significantly improved larval survival ( P < 0.05). Therefore, the healthy shrimp larviculture system harbored a diverse and favorable bacterial flora, which contribute to larval development and are of great importance in exploiting novel probiotics.

  3. Fish Culture Data - Captive Broodstock Gene Rescue Program for Odd Year Class Elwha River Pink Salmon

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Conduct captive brood stock gene rescue program for Elwha River odd-year class pink salmon. Raw data on rearing density, loading density, water temperature, ration,...

  4. Vision in hydrothermal vent shrimp.

    OpenAIRE

    Chamberlain, S C

    2000-01-01

    Bresiliid shrimp from hydrothermal vents on the Mid-Atlantic Ridge have non-imaging eyes adapted for photodetection in light environments of very low intensity. Comparison of retinal structures between both vent shrimp and surface-dwelling shrimp with imaging eyes, and between juvenile and adult vent shrimp, suggests that vent shrimp have evolved from ancestors that lived in a light environment with bright cyclic lighting. Whether the vent shrimp live in swarms and have large dorsal eyes or l...

  5. Investigation of Pink Tourmalines by X-ray Fluorescent Technique

    International Nuclear Information System (INIS)

    Sangariyavanich, A.; Na Songkhla, S.; Pimjum, S.

    1998-01-01

    X-ray fluorescent technique has been employed in the study of trace elements in six samples of gamma irradiated pink tourmalines, namely, red-pink (rubellite), light-pink, orange-pink, brownish orange-pink, purple red and purple orange-pink. The analysis of their characteristic X-ray indicated the existence of manganese in all samples. Trace amounts of iron, zinc, lead, bismuth or gallium were also investigated in certain samples. Since these elements were not present in red-pink tourmaline, therefore, we believed that manganese is the major cause of pink color in tourmaline while other elements produce various types of pink color

  6. Effect of Adding the White Legged Shrimp (Penaeus vannamei on Growth and Survival of Tiger Shrimp (Penaeus monodon in Intensive Farming

    Directory of Open Access Journals (Sweden)

    . Tarsim

    2007-12-01

    Full Text Available This experiment was carried out in the framework of a project to develop a viable shrimp polyculture technology under intensive farming. The objectives were to assess the effect of adding white legged shrimp (Penaeus vannamei on growth and survival of tiger shrimp (Penaeus monodon in intensive Farming. Tiger shrimp were stocked in 2800-3400 m2 earthen ponds at 40 individuals/m2 and reared for 133 days. White legged shrimp added at 70 day at 8±2 individuals/m2. Growth rate and total yield affected by addition of this species. Final  affected by white legged shrimp addition. No adding effects were found on the water quality parameters. The results indicate that, at densities tested, white legged shrimp addition to the intensive farming of tiger shrimp polyculture is viable as species increase crop production Key words: Penaeus vannamei, P. monodon, growth, survival, polyculture

  7. Microbial Diseases in Shrimp Aquaculture

    Digital Repository Service at National Institute of Oceanography (India)

    Karunasagar, Iddya; Karunasagar, Indrani; Umesha, R.K.

    for detection of rhabdovirus of penaeid shrimp in the tissue of infected animals (Nadala et al. 1992). Management of viral diseases Since there is no known treatment for viral diseases, the major strategy for disease management is avoidance. However, in practice... suspected that natural food and artificial feed quality, husbandry practices, water quality and presence of toxic substances from chemical prophylactics are responsible for SHG, but no specific cause has been perpointed so far (Lavilla-Pitogo et al., 2002...

  8. Comparative Reproduction Aspects of the Deep-water Shrimps Aristaeomorpha foliacea and Aristeus antennatus (Decapoda, Aristeidae in the Greek Ionian Sea (Eastern Mediterranean

    Directory of Open Access Journals (Sweden)

    K. Kapiris

    2009-01-01

    Full Text Available In the eastern Ionian Sea, the deep-water shrimps Aristaeomorpha foliacea and Aristeus antennatus constitute a virgin fishing resource, since their maximum abundance depth exceeds commercial exploitation depths. The two sympatric species share a number of common reproductive features, such as summer reproduction. A slight temporal shift in mating activity, ovarian maturation, and spawning period was observed between species. The most notable difference was the more pronounced seasonality in reproductive activity of Aristeus antennatus compared to that of A. foliacea as evidenced by the frequency of inseminated females and functionally mature males, as well as by the shorter ovarian maturation period. Nevertheless, regarding the whole life span, both sexes of Aristeus antennatus exhibit a more extended reproductive activity in comparison to A. foliacea. No notable differentiation of both species existed in comparison to other Mediterranean regions.

  9. Population Structure and Recruitment of Penaeid Shrimps from the ...

    African Journals Online (AJOL)

    larger shrimps located in deeper waters (Brito et al.,. 1998; Abdula ... species, the role of the shallow coastal areas (less than 8-10 m) of the ... and define the recruitment season of penaeid shrimps ... later processing in the laboratory. A 0.5 L ...

  10. Carriage of vibrio species by shrimps harvested from the coastal ...

    African Journals Online (AJOL)

    Objectives: To determine the prevalence of Vibrio spp in unprocessed shrimps and their susceptibility to antibiotics. Design: A prospective study of Vibrio spp associated with shrimps harvested from the coastal waters of South West Cameroon. Setting: A laboratory based study at the Department of Life Sciences, University ...

  11. Selection, Identification and Optimization of the Growth Water Probiotic Consortium of Mangrove Ecosystems as Bioremediation and Biocontrol in Shrimp Ponds

    Directory of Open Access Journals (Sweden)

    Wilis Ari Setyati

    2015-01-01

    Full Text Available Shrimp aquaculture is an activity that potentially generates organic waste. The accumulation of organic matter is becoming one of the main factors causing the emergence of disease. Problem-solving approach that is most effective is through bioremediation. The aims of this study were to select, identify and cultivate bacteria from mangrove sediments from Cilacap, Rembang and Banyuwangi which potentially as probiotic consortium of bioremediation activity and biocontrol. The results showed that total of 45 isolates (proteolytic, 35 isolates (amylolytic, 35 isolates (lipolytic, and 18 isolates (cellulolytic. There were 59 bacterial isolates had antibacterial activity of vibrio (V. harveyi, V. alginolyticus, V. vulnificus and V. anguilarum. Based on the identification of 16 S-rRNA genes, 4 isolates showed that the C2 isolate was identified as Bacillus subtilis, C11 isolate was identified as Bacillus firmus, C13 and C14 isolates were identified as B. Flexus. This study concluded that cultivation of Bacillus subtilis C2 optimum at 2% molase and yeast extract 0.5% at pH 8 and 30 0C. Bacillus firmus C11 optimum at 2% molase and yeast extract 0.5% at pH 8 and 30 0C. Bacillus flexus C13 optimum at 2% glucose and yeast extract 0.5% at pH 8 and 30 0C. Bacillus flexus C14 optimum at 4% molase and yeast extract 0.25% at pH 8 and 30 0C. The result of culture applications of 4 isolates showed an effect of increasing shrimp weight by 141, 9% compared by the control.Keywords: sediment, mangrove, bioremediation, biocontrol

  12. Application of risk perception and communication strategies to manage disease outbreaks of coastal shrimp farming in developing countires

    DEFF Research Database (Denmark)

    Ahsan, Dewan

    2008-01-01

    Coastal shrimp aquaculture is one of the major economic activities of the people of developing countries especially in Southeast Asia and Latin America. Risk and uncertainty are very common issues in coastal shrimp industry like in any other business. Various types of risks are associated in shrimp...... farming like, production risks, technical risks, economical risks and disease of shrimp. However, risk of economic losses due to shrimp mortality (for diseases) is the major concern of the shrimp producers of Bangladesh, India, Thailand, China and many other countries. Poor water quality and high stocking...... density usually initiate the rapid growth of virus and bacteria in a shrimp farm which in turn cause the disease and mortality of shrimp. Coastal shrimp farms are very densely located in Bangladesh and other Southeast Asian countries. As a result, the viral and bacterial diseases can be easily spread from...

  13. MEDITS-based information on the deep water red shrimps Aristaeomorpha foliacea and Aristeus antennatus (Crustacea: Decapoda: Aristeidae

    Directory of Open Access Journals (Sweden)

    Angelo Cau

    2002-06-01

    Full Text Available The application of statistical models on a time series of data arising from the MEDITS International Trawl Survey, an experimental demersal resources survey carried out during six years (1994-1999 in the same season of the year (late spring - early summer using the same fishing gear in a large part of the Mediterranean, has allowed for a study to compare, for the first time, the space-time distribution, abundance, and size structure of the two Aristeids Aristaeomorpha foliacea and Aristeus antennatus throughout most of the Mediterranean Sea. This research has shown a large variability among the six reference areas, that were arbitrarily defined within the basin. In particular the two shrimps do not seem to present any correlation or yield continuity in the years. The same lack of homogeneity was also observed in the time trend of the abundances and frequencies of each of the two species. These data seem to confirm the intrinsic variability of the species, the cause of which is still unknown and undocumented. Nevertheless, a longitudinal gradient of catches has been observed where A. antennatus is more abundant in the west and A. foliacea in the east of the basin.

  14. Isolation By Distance (IBD) signals in the deep-water rose shrimp Parapenaeus longirostris (Lucas, 1846) (Decapoda, Panaeidae) in the Mediterranean Sea.

    Science.gov (United States)

    Lo Brutto, S; Maggio, T; Arculeo, M

    2013-09-01

    The identification of boundaries of genetic demes is one of the major goals for fishery management, and few Mediterranean commercial species have not been studied from a genetic point of view yet. The deep-water rose shrimp Parapenaeus longirostris (Lucas, 1846) is one of the most important components of commercial landings in Mediterranean, its fishery aspects have received much attention, regrettably without any concern for the genetic architecture of its populations. The population structure in the central and eastern Mediterranean Sea (captures from six Italian and two Greek landings) has been analysed on the basis of surveys carried out with mitochondrial and AFLP markers. Data revealed the presence of a gradual discrepancy along a west-east axis. This species, occurring mainly at a depth of between 100 and 400 m, is not strongly confined in isolated demes, but it demonstrates an 'Isolation By Distance' model, within the Mediterranean Sea, which includes geographical areas with a some degree of isolation. The role of hydrodynamic forces, such as currents, water fronts, is discussed; and a further evidence of the 'Levantine isolation' within Mediterranean basin is shown. Copyright © 2013 Elsevier Ltd. All rights reserved.

  15. Gulf Shrimp System

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Gulf of Mexico Shrimp Landings - This data set contains catch (landed catch) and effort for fishing trips made by the larger vessels that fish near and offshore for...

  16. Influence of Thermal Preparation Method on Mineral Composition of Shrimps

    Directory of Open Access Journals (Sweden)

    Gheorghe Valentin GORAN

    2017-11-01

    Full Text Available This study goal was to evaluate the effects of 3 different cooking methods (boiling, roasting, and microwaving on mineral concentrations of shrimps from the Bucharest market. Mineral content in shrimp samples was evaluated by ICP-OES, and relative humidity was assessed by thermogravimetry. Cooking method insignificantly influenced the level of Fe. Ca and K levels were higher in cooked samples compared to raw shrimps, independent of cooking method. Essential (Cu, Se, and Zn, and non-essential and toxic (Al, Cd, Ni, and Pb elements levels were significantly increased in boiled shrimps, compared to raw and the other 2 types of cooked samples. Generally, after cooking the lowest values of essential trace elements concentration was registered in roasted samples. The highest percentage of water loss was found in boiled samples. In general, thermal preparation increased mineral concentrations in cooked samples compared to raw shrimps.

  17. Effect of various Na/K ratios in low-salinity well water on growth performance and physiological response of Pacific white shrimp Litopenaeus vannamei

    Science.gov (United States)

    Liu, Hongyu; Tan, Beiping; Yang, Jinfang; Lin, Yingbo; Chi, Shuyan; Dong, Xiaohui; Yang, Qihui

    2014-09-01

    To investigate the influence of sodium to potassium (Na/K) ratios on the growth performance and physiological response of the Pacific white shrimp ( Litopenaeus vananmei), various concentrations of KCl were added to low-salinity well water (salinity 4) in an 8-week culture trial. Six treatments with Na/K ratios of 60:1, 42:1, 33:1, 23:1, 17:1, and 14:1 were replicated in triplicate. The highest weight-gain rate (3 506±48)% and survival rate (89.38±0.88)% was observed in well water with Na/K ratios of 23:1 and 42:1, respectively, while the feed conversion ratio (1.02±0.01), oxygen consumption, and ammonia-N excretion rate was the lowest in the medium with a Na/K ratio of 23:1. Gill Na+-K+-ATPase activity, as an indicator of osmoregulation, peaked in the treatment where the Na/K ratio was 17:1. The total hemocyte count, respiratory burst, and immune-related enzyme activities (ALP, LSZ, PO, and SOD) of L. vananmei were affected significantly by Na/K ratios ( Pshrimp reared in a Na/K ratio of 23:1 (30±14.14)% was significantly lower than the control (75±7.07)%. In conclusion, the addition of K+ to low-salinity well water in L. vannamei cultures is feasible. Na/K ratios ranging from 23:1 to 33:1 might improve survival and growth. Immunity and disease resistance are also closely related to the Na/K ratio of the low-salinity well water. The findings may contribute to the development of more efficient K + remediation strategies for L. vananmei culture in low-salinity well water.

  18. Efeito da densidade de estocagem sobre o biofilme e o desempenho de pós-larvas do camarão-rosa FarfantePenaeus paulensis cultivadas em gaiolas Effect of stocking density on the biofilm and the performance of post-larvae of the pink shrimp FarfantePenaeus paulensis in cages

    Directory of Open Access Journals (Sweden)

    Artur de Lima Preto

    2005-12-01

    Full Text Available O objetivo deste estudo foi analisar a influência da densidade de estocagem na sobrevivência e no crescimento de pós-larvas de F. paulensis cultivadas em gaiolas durante a fase de berçário. Além disso, foram identificados e quantificados os principais microrganismos presentes no biofilme formado nos substratos artificiais colocados dentro das gaiolas. Foram usadas gaiolas com 4 m² de fundo e com substratos artificiais, nas densidades de 100, 200, 300, 400 e 500PL25 m-2. O experimento durou 35 dias. Observou-se uma relação negativa entre o aumento da densidade de estocagem de camarões e a sobrevivência e o crescimento destes. Foi observada uma preferência pelo consumo de diatomáceas cêntricas. A viabilidade técnica do cultivo de F. paulensis em gaiolas foi confirmada. O cultivo de F. paulensis em gaiolas na fase de berçário pode ser feito em densidades de até 400PL m-2, sem maiores perdas em sua sobrevivência e seu crescimento.The aim of this study was to analyze the influence of the stocking density in the survival and growth of FarfantePenaeus paulensis postlarvae reared in cages during the nursery phase. Additionally, we identified and quantified the main microorganisms present on the biofilm formed on artificial substrates placed inside the cages. We used 4 m² bottom surface cages with artificial substrates and shrimp stocking densities of 100, 200, 300, 400 and 500PL25 m-2. The experiment lasted for 35 days. A negative relationship was observed between the increase of shrimp stocking density and their survival/growth rates. A preference for centric diatoms was also observed. The technical feasibility of culturing F. paulensis in cages was confirmed. The rearing of F. paulensis in nursery cages may be conduced in densities at also 400PL m-2, without more loss in survival and growth.

  19. Sub-tropical coastal lagoon salinization associated to shrimp ponds effluents

    Science.gov (United States)

    Cardoso-Mohedano, José-Gilberto; Lima-Rego, Joao; Sanchez-Cabeza, Joan-Albert; Ruiz-Fernández, Ana-Carolina; Canales-Delgadillo, Julio; Sánchez-Flores, Eric-Ivan; Páez-Osuna, Federico

    2018-04-01

    Anthropogenic salinization impacts the health of aquatic and terrestrial ecosystems worldwide. In tropical and subtropical areas, shrimp farm aquaculture uses water from adjacent ecosystems to fill the culture ponds, where enhanced evaporation cause salinization of discharged water. In this study, we studied water salinity before and after shrimp farm harvest and implemented a three-dimensional hydrodynamic model to assess the impact on a subtropical coastal lagoon that receives water releases from shrimp ponds. The shrimp pond discharge significantly increased the salinity of receiving waters, at least 3 psu over the local variation. In the worst-case salinization scenario, when harvest occurs after a long dry season, salinity could increase by up to 6 psu. The induced salinization due to shrimp pond effluents remained up to 2 tidal cycles after harvest, and could affect biota. The methodology and results of this study can be used to assess the impacts of shrimp aquaculture worldwide.

  20. 2008 Economic Survey of Gulf State Shrimp License Holders

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This mail survey collected data on the economic performance of active commercial shrimp harvesters who primarily operated in inshore waters of western Florida,...

  1. Burrowing behavior of penaeid shrimps

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Brown shrimp, Farfantepenaeus aztecus, and white shrimp, Litopenaeus setiferus, were held were held under natural light conditions before experiments. Experiments...

  2. Short spatio-temporal variations in the population dynamics and biology of the deep-water rose shrimp Parapenaeus longirostris (Decapoda: Crustacea in the western Mediterranean

    Directory of Open Access Journals (Sweden)

    Beatriz Guijarro

    2009-03-01

    Full Text Available The deep-water rose shrimp Parapenaeus longirostris is a demersal decapod crustacean that is commercially exploited by trawl fleets. The present work compares its population dynamics, biology and condition in two locations (southern and north-western Mallorca in the Balearic Islands, western Mediterranean, separated by a distance of 120 km with different environmental conditions and explores the relationships between the species and certain environmental factors. Six multidisciplinary bimonthly surveys were carried out during 2003 and 2004 in these two locations (between 150 and 750 m depth in order to collect data on the demersal species with bottom trawl, the hydrography (temperature and salinity with CTD casts, and trophic resources (zooplankton in the water column and suprabenthos with Bongo net and Macer-GIROQ sledge respectively and sediments with a Shipeck dredge. The trawl fleets from both locations were monitored by monthly on board sampling and daily landings obtained from sales bills. Additional data was obtained from other trawl surveys. Temporal differences were detected both annually, with a decreasing trend over the last years in species abundance, and seasonally, in the biological indexes analysed. Bathymetric differences were also found in abundance, mean length, sex-ratio and condition of females. There were clear differences between the two locations studied, with higher abundance, condition and mean length and a lower length at first maturity for females in the north-western location. Trophic conditions could act as a link between geo-physical and biological changes. These short spatio-temporal differences could be due to the higher productivity found at this location, with higher density of preferred prey for the studied species together with adequate seafloor topography, sediment composition and hydrographical characteristics.

  3. Health and pink-collar work.

    Science.gov (United States)

    Basu, S; Ratcliffe, G; Green, M

    2015-10-01

    In recent years, there has been a decline in the manufacturing sector of the UK economy with a corresponding growth of service-orientated pink-collar jobs in some regions. While the health outcomes of white- and blue-collar workers are well-established, less is known about this emerging pink-collar group. To outline the health of pink-collar workers in comparison to their white-collar counterparts across a range of indicators. Area-level percentages for white-, pink- and blue-collar workers were derived from residents' routinely collected employment data in a northern English town. Area-level health data pertaining to male and female life expectancy, respiratory deaths and deaths from cardiovascular and circulatory causes (all age and under 75 years) were obtained from the local authority and public health observatory. Multivariate regression analyses were performed to assess relationships between job collar and health. When adjusted for deprivation, areas with higher percentages of pink-collar workers experienced lower rates of death from circulatory disease under the age of 75 in comparison to white-collar workers. Other relationships between collar status and health outcomes were not statistically significant. The reasons underlying the apparent protective effect of pink-collar status for deaths from circulatory disease are uncertain and merit further study. Possibilities include differences in age, exposure to occupational hazards and lifestyle behaviours. Our work has a number of limitations and longitudinal studies with detailed exposure data should assess the long-term health outcomes of these workers using agreed definitions. © The Author 2015. Published by Oxford University Press on behalf of the Society of Occupational Medicine. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

  4. Effects of Shrimp Meal Fermented with Aspergillus niger On Physical Quality of Broiler Meat

    Directory of Open Access Journals (Sweden)

    Djalal Rosyidi

    2012-02-01

    Full Text Available The research materials were 75 broiler chickens of 1 day old and feeds. The research employed five treatments, namely (P0: feed without addition of fermented shrimp meal, P1: feed with 5 % addition of fermented shrimp meal, P2: feed with 7.5 % addition of fermented shrimp meal, P3: feed with 10 % addition of fermented shrimp meal, P4: feed with 12.5 % addition of fermented shrimp meal. Every treatment was repeated 3 times, with 5 chickens respectively. Variables of this research were Water Holding Capacity (WHC, cooking loss and tenderness of broiler meat. Data were analyzed by completely randomized design, if there was a significant effect, it was followed by Duncan’s Multiple Range Test (DMRT. The result of this research showed that the use of fermented shrimp meal in broiler feed can improve WHC, degrading cooking loss and improving tenderness of broiler meat.   Keywords : Water holding capacity, cooking loss, tenderness

  5. Antimicrobial and Antifungal Effects of Acid and Water-Soluble Chitosan Extracted from Indian Shrimp (Fenneropenaeus indicus Shell

    Directory of Open Access Journals (Sweden)

    Ali Taheri

    2013-06-01

    Full Text Available Background & Objective : Currently, efforts are underway to seek new and effective antimicrobial agents, and marine resources are potent candidates for this aim. The following study was conducted to investigate the efficacy of water-soluble and acid-soluble chitosan against some pathogenic organisms.   Materials & Method s: Inhibition zone of different concentrations (5, 7.5, and 10 mg/ml of acid- soluble and water-soluble chitosan were examined for in vitro antibacterial activity against 4 kinds of hospital bacteria and penicillium sp. Results were compared with 4 standard antibiotics: streptomycin, gentamicin, tetracycline, and erythromycin. Furthermore, minimum inhibitory concentration and minimum lethal concentration were determined.   Results: Inhibition activity of acid-soluble chitosan (10% showed the best result (p value < 0.05, whereas water-soluble chitosan exhibited the least antibacterial effects (p value < 0.05. Chitosan demonstrated maximum effect on V. cholera cerotype ogava , and the least effect was seen on E. coli (p value < 0.05. Acid-soluble chitosan had a more potent effect than the standard antibiotics. Also, acid-soluble chitosan (10% and water-soluble chitosan showed maximum inhibitory effects on penicillium sp.   Conclusion: Chitosan showed maximum antibacterial effect against S. aureus, V. cholerae cerotype ogava, and water-soluble chitosan demonstrated good antifungal effects, revealing a statistically significant difference with common antibacterial and antifungal medicines.

  6. Molecular variations in Vibrio alginolyticus and V. harveyi in shrimp-farming systems upon stress

    OpenAIRE

    Santhyia,Anix Vivek; Mulloorpeedikayil,Rosalind George; Kollanoor,Riji John; Jeyaseelan,Prince M.J.

    2015-01-01

    A study was performed to investigate the genomic variations in the shrimp farm isolates of Vibrio alginolyticus and V. harveyi when the isolates were subjected to environmental stress. Samples of shrimps, water and sediment were collected from Southern Indian coastal shrimp farms. Vibrio isolates were biochemically identified and confirmed using 16S rDNA and gyrB gene specific PCR. The bacterial strains were genotyped by PCR fingerprinting using GTG(5) and IS (Insertion Sequence) primers. Sev...

  7. Resilience and livelihood dynamics of shrimp farmers and fishers in the Mekong Delta, Vietnam

    OpenAIRE

    Tran Thi Phung, H.

    2012-01-01

    Shrimp aquaculture and fishery, the two important economic sectors in Vietnam, have been promoted by the government to reduce poverty, provide job opportunities, and to increase exports to support economic development. However, this expansion of fishery and aquaculture has also had negative effects. Hundreds of thousands of hectares of mangrove forest have been replaced by shrimp ponds and, as a result, have brought ecological risks like water pollution, causing shrimp disease outbreaks. The...

  8. Complex vertical migration of larvae of the ghost shrimp, Nihonotrypaea harmandi, in inner shelf waters of western Kyushu, Japan

    Science.gov (United States)

    Tamaki, Akio; Mandal, Sumit; Agata, Yoshihiro; Aoki, Ikumi; Suzuki, Toshikazu; Kanehara, Hisao; Aoshima, Takashi; Fukuda, Yasushi; Tsukamoto, Hideshi; Yanagi, Tetsuo

    2010-01-01

    The position of meroplanktonic larvae in the water column with depth-dependent current velocities determines horizontal transport trajectories. For those larvae occurring in inner shelf waters, little is known about how combined diel and tidally-synchronized vertical migration patterns shift ontogenetically. The vertical migration of larvae of Nihonotrypaea harmandi (Decapoda: Thalassinidea: Callianassidae) was investigated in mesotidal, inner shelf waters of western Kyushu, Japan in July-August 2006. The larval sampling at seven depth layers down to 60 m was conducted every 3 h for 36 h in a 68.5-m deep area 10 km off a major coastal adult habitat. Within a 61-65-m deep area 5-7.5 km off the adult habitat, water temperature, salinity, chlorophyll a concentration, and photon flux density were measured, and water currents there were characterized from harmonic analysis of current meter data collected in 2008. The water column was stratified, with pycnocline, chlorophyll a concentration maximum, and 2% of photon flux density at 2 m, recorded at around 22-24 m. The stratified residual currents were detected in their north component, directed offshore and onshore in the upper and lower mixed layers, respectively. More than 87% of larvae occurred between 20 m and 60 m, producing a net onshore transport of approximately 1.3 km d -1. At the sunset flooding tide, all zoeal-stage larvae ascended, which could further promote retention (1.4-km potential onshore transport in 3 h). The actual onshore transport of larvae was detected by observing their occurrence pattern in a shallow embayment area with the adult habitat for 24 h in October 1994. However, ontogenetic differences in the vertical migration pattern in inner shelf waters were also apparent, with the maximum mean positions of zoeae deepening with increasing stages. Zoeae I and II performed a reverse diel migration, with their minimum and maximum depths being reached around noon and midnight, respectively. Zoeae IV

  9. Effects of carotenoid sources on growth performance, blood parameters, disease resistance and stress tolerance in black tiger shrimp (Penaeus monodon Fabricius

    Directory of Open Access Journals (Sweden)

    Supamattaya, K.

    2005-02-01

    Full Text Available Two feeding trial were conducted to determine the effects of various sources of carotenoid on growth performance, disease resistance, blood parameters, stress tolerance and pigmentation in juvenile black tiger shrimp (Penaeus monodon. Trial I was performed in small shrimp (1 g average body weight. The shrimp were fed with control diet without carotenoid (diet 1 while diets 2 to 6 contained 50 mg/kg astaxanthin (Lucanthin Pink®, 125 mg/kg β-carotene (Lucarotin®, 200 mg/kg β-carotene (Lucarotin®, 125 mg/kg Betatene® extracted from Dunaliella and 3% dried Spirulina respectively. There was an improvement in color in all groups of shrimp fed caroteniod supplemented diets, but no significant differences in weight gain or survival among the shrimps fed each test diet (p>0.05. Resistance to white spot syndrome virus (WSSV infection and stress tolerance (salinity stress, were not significantly different among treatments. Trial II was performed in juvenile shrimp (10 g average body weight fed test diets containing 100 ppm astaxanthin (Lucanthin pink®, 125 mg/kg β-carotene (Lucarotin®, 250 mg/kg β-carotene (Lucarotin®, 250 mg/kg Betatene® and 3% dried Spirulina compared with those fed control diet without carotenoid. At the end of 6 weeks feeding period, shrimp fed control diet as well as astaxanthin and dried Spirulina supplemented diets had higher levels of total hemocyte counts than those of all β-carotene supplemented diets feeding group. However, phenoloxidase activity and clearance of pathogenic vibrio from the hemolymphwere not significantly different among the treatments (p>0.05. Astaxanthin levels were highest in the shrimp fed all carotenoid-supplemented diets. In conclusion, a natural carotenoid i.e. dried Spirulina and carotenoid extracted from Dunaliella which have a lower production cost than analytical carotenoid showed beneficial effects on shrimp feed supplement.

  10. Chum and pink salmon genetics - Genetic and life history variation of southern chum and pink salmon

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The distribution of genetic and life history variation in chum (Oncorhynchus keta) and pink (O. gorbuscha) salmon in their southern range in North America is key to...

  11. Late rise in hemolymph osmolality in Macrobrachium acanthurus (diadromous freshwater shrimp) exposed to brackish water: Early reduction in branchial Na+/K+ pump activity but stable muscle HSP70 expression.

    Science.gov (United States)

    Freire, Carolina A; Maraschi, Anieli C; Lara, Alessandra F; Amado, Enelise M; Prodocimo, Viviane

    2018-02-01

    Some Macrobrachium shrimps (Caridea, Palaemonidae) are diadromous; freshwater adults are truly euryhaline, while larvae need saline water for development. Branchial Na + /K + -ATPase (NKA) and carbonic anhydrase (CA) are involved in NaCl absorption in freshwater. This study aimed at verifying the time course of the osmoregulatory response of adult Macrobrachium acanthurus to high salinity brackish water (20‰), from the first 30min to 5days. The goal was to detect possible transition from hyper- to hyporegulation, the putative involvement of branchial NKA and CA, or the induction of muscular HSP70 expression. Hemolymph osmotic and ionic concentrations remained relatively stable and close to control levels until ~9h of exposure, but later increased consistently (~50%). A fast reduction in NKA activity (3-6h) was observed; these shrimps seem to shut off salt absorption already in the first hours. Later on, especially after 24h, hemolymph concentrations rise but HSP70 expression is not induced, possibly because constitutive levels are already sufficient to prevent protein damage. Time-dependent response mechanisms effective in high salinity brackish water, resulting in salt loading avoidance and suggestive of hyporegulation should be further investigated in decapods that evolutionary invaded freshwater. Copyright © 2017 Elsevier Inc. All rights reserved.

  12. Seeing the World Through "Pink-Colored Glasses": The Link Between Optimism and Pink.

    Science.gov (United States)

    Kalay-Shahin, Lior; Cohen, Allon; Lemberg, Rachel; Harary, Gil; Lobel, Thalma E

    2016-12-01

    This study investigated optimism, which is considered a personality trait, from the grounded cognition perspective. Three experiments were conducted to investigate the association between pink and optimism. In Experiment 1A, 22 undergraduates (10 females; M age  = 23.68) were asked to classify words as optimistic or pessimistic as fast as possible. Half the words were presented in pink and half in black. Experiment 1B (N = 24; 14 females; M age  = 22.82) was identical to 1A except for the color of the words-black and light blue instead of pink-to rule out the possible influence of brightness. Experiment 2 exposed 144 participants (74 females; M age  = 25.18) to pink or yellow and then measured their optimism level. The findings for Experiments 1A and 1B indicated an association between pink and optimism regardless of brightness. Experiment 2 found that mere exposure to pink increased optimism levels for females. These results contribute to the dynamic view of personality, current views on optimism, and the growing literature on grounded cognition. © 2015 Wiley Periodicals, Inc.

  13. The Effect of Copper on the Color of Shrimps: Redder Is Not Always Healthier

    Science.gov (United States)

    Martínez, Ana; Romero, Yanet; Castillo, Tania; Mascaró, Maite; López-Rull, Isabel; Simões, Nuno; Arcega-Cabrera, Flor; Gaxiola, Gabriela; Barbosa, Andrés

    2014-01-01

    The objective of this research is to test the effects of copper on the color of pacific white shrimp (Litopenaeus vannamei) in vivo. Forty-eight shrimps (L. vannamei) were exposed to a low concentration of copper (1 mg/L; experimental treatment) and forty-eight shrimps were used as controls (no copper added to the water). As a result of this experiment, it was found that shrimps with more copper are significantly redder than those designated as controls (hue (500–700 nm): P = 0.0015; red chroma (625–700 nm): P<0.0001). These results indicate that redder color may result from exposure to copper and challenge the commonly held view that highly pigmented shrimps are healthier than pale shrimps. PMID:25229639

  14. Vitamin requirements of juvenile penaeid shrimp

    OpenAIRE

    Conklin, D

    1989-01-01

    The results of supplementing crustacean feeds with vitamins are examined specifically from the standpoint of shrimp culture. Micro-nutrients selected for discussion include: water-soluble vitamins of the B-complex, choline and inositol, vitamin C and the fat-soluble group of vitamins: A, D, E and K. Ways in which utilization of vitamins and ultimately dietary demand are altered by physiological state, conditions of culture, as well as factors which impact on feed levels, are explored.

  15. PERFORMANCES OF TIGER SHRIMP CULTURE IN ENVIRONMENTALLY FRIENDLY PONDS

    Directory of Open Access Journals (Sweden)

    Taufik Ahmad

    2016-10-01

    Full Text Available Mangrove ecosystem plays an obvious role in maintaining the biological balance in the coastal environment where shrimp ponds are usually constructed. The removal of mangroves around shrimp ponds has frequently brought about harvest failure. The study evaluated the performance of tiger shrimp culture in ponds provided with water from a water body where there was mangrove vegetation (hereafter mangrove reservoir. Twelve ponds, each measuring 2,500 m2, were filled with seawater from the mangrove reservoir until the water depth of 100 cm and then stocked with 20-40 PL/m2. In the first six ponds, the bottom water was released into the reservoir when the water depth reached 140 cm and then the water depth was maintained at 100 cm. In the second six ponds, the water was released from the ponds until the water depth reached 60 cm and then refilled with reservoir water until a depth of 100 cm. Both treatment ponds received water from the reservoir which also received the wastewater. The feeds for the shrimps were broadcast into the ponds twice a day to meet the 3% shrimp biomass requirement, which adjusted every other week through sampling. The result showed that mangrove  vegetation is capable of removing excessive nutrients, up to 70% for NO3- N and NH4 +-N, reducing PO4 =-P fluctuation, and producing bioactive  compounds. In the second treatment ponds, shrimp mortality started to occur in day 28 and most died by day 54 after stocking due to white spot disease outbreak. Mass mortality took place 54 days after stocking in two out of six of the first treatment ponds.

  16. Radurization of brown shrimps

    International Nuclear Information System (INIS)

    Ehlermann, D.; Muenzner, R.

    1976-01-01

    Brown shrimps (Crangon vulgaris) from the North sea coast were blanched on board, and irradiated with cobalt-60 gamma-rays at a minimum dose of 130 krad either before or after peeling. Other samples were irradiated before and after peeling. Control samples remained untreated or were preserved with benzoic acid. Irradiation before peeling did not result in a lasting improvement of keeping quality. However, irradiation of the peeled shrimp meat resulted in a reduction of the total bacterial load by up to 4 orders of magnitude. Shelf life until the initial microbial count was reached was 9 days for chemically treated samples, 18 days for samples irradiated after peeling, and 20 days for samples irradiated before and after peeling. Sensory evaluation and determination of volatile basic nitrogen gave similar results. The obtained diminution of the counts of staphylococci, enterococci and enterobacteriaceae reduces the hygienic hazard. Radurization of shrimp meat proved to be a satisfactory means of preservation. Introduction of the product into the market and best presentation and packaging require further investigations. (orig.) [de

  17. Predation by dipteran larvae on fairy shrimp (Crustacea: Anostraca) in Utah rock pools

    Science.gov (United States)

    Graham, T.B.

    1994-01-01

    A series of experiments examined how ecological factors affect notonectid foraging success on fairy shrimp. Variation in pond depth over natural ranges had no direct effect on notonectid ability to capture fairy shrimp. Decreases in water clarity over natural ranges led to decreased notonectid ability to capture fairy shrimp. This corresponds with the observation that six weeks after the fairy shrimp hatched they were more likely to be present in cloudy ponds than in ponds containing clearer water. If correct, this is a situation where physical factors have a major effect on how a biological interaction influences the local distribution of species. It appears water depth indirectly affects notonectid foraging rates, as shallow ponds are apparently made cloudy by wind-driven waves disturbing the bottom mud. These results suggest the notonectid-fairy shrimp interaction will not be a constant for any given pond, but will depend on abiotic factors like amount of rainfall and frequency of windy conditions.

  18. Effects of decomposing Rhizophora apiculata leaves on larvae of the shrimp Penaeus monodon

    NARCIS (Netherlands)

    Roijackers, R.M.M.; Nghia, T.T.; Ut, V.N.; Scheffer, M.

    2006-01-01

    We studied the effects of different concentrations of decomposing Rhizophora apiculata leaves and their leachates on larvae of the shrimp Penaeus monodon under laboratory conditions. Shrimp mortality was highly dependent on the concentration of oxygen in the water, which in turn was strongly

  19. Shrimp-based livelihoods in mangrove silvo-aquaculture farming systems

    NARCIS (Netherlands)

    Bosma, R.H.; Nguyen, T.H.; Siahainenia, A.J.; Tran, H.T.P.; Tran, H.N.

    2016-01-01

    The paper reviews the following three types of mangrove-shrimp systems: (i) integrated with canals between platforms planted with mangrove; (ii) associated having larger areas of water and a large mangrove area; and (iii) separated, with a dyke separating ponds from forest. The variations in shrimp

  20. Major shrimp pathogenic virus in america and their relationship with low salinity environments

    Directory of Open Access Journals (Sweden)

    Daniel Enrique Godínez Siordia

    2012-09-01

    Full Text Available Shrimp aquaculture is an expanding activity in many countries in which the health status is a determining factor for its success. In this review we present world shrimp viral agents, with emphasis in America reported virus and the influence of water salinity.

  1. Effect of dietary pigment on growth performance and disease resistance in black tiger shrimp post larva (Penaeus monodon, Fabricius

    Directory of Open Access Journals (Sweden)

    Boonyaratpalin, M.

    2005-02-01

    Full Text Available Effects of dietary pigment on survival and disease (white spot syndrome virus: WSSV resistance in black tiger shrimp post larva (Penaeus monodon, Fabricius (PL15 for a 30-day period were studied. The results showed that not only was mean survival of black tiger shrimp (PL15 fed with supplementation of Lucarotene or Betatene at 125 mg/kg diet significantly higher (P<0.05 but also the body color was increased. There were no effects of dietary pigment on mean weight, percent weight gain and WSSV resistance. However, mean WSSV resistance of black tiger shrimp (PL15 fed diet containing Lucantin pink 50 mg/kg diet, Spirulina 30 g/kg diet or Betatene 125 mg/kg diet was higher than that of control.

  2. Vortex formation with a snapping shrimp claw.

    Science.gov (United States)

    Hess, David; Brücker, Christoph; Hegner, Franziska; Balmert, Alexander; Bleckmann, Horst

    2013-01-01

    Snapping shrimp use one oversized claw to generate a cavitating high speed water jet for hunting, defence and communication. This work is an experimental investigation about the jet generation. Snapping shrimp (Alpheus-bellulus) were investigated by using an enlarged transparent model reproducing the closure of the snapper claw. Flow inside the model was studied using both High-Speed Particle Image Velocimetry (HS-PIV) and flow visualization. During claw closure a channel-like cavity was formed between the plunger and the socket featuring a nozzle-type contour at the orifice. Closing the mechanism led to the formation of a leading vortex ring with a dimensionless formation number of approximate ΔT*≈4. This indicates that the claw might work at maximum efficiency, i.e. maximum vortex strength was achieved by a minimum of fluid volume ejected. The subsequent vortex cavitation with the formation of an axial reentrant jet is a reasonable explanation for the large penetration depth of the water jet. That snapping shrimp can reach with their claw-induced flow. Within such a cavitation process, an axial reentrant jet is generated in the hollow cylindrical core of the cavitated vortex that pushes the front further downstream and whose length can exceed the initial jet penetration depth by several times.

  3. Vortex formation with a snapping shrimp claw.

    Directory of Open Access Journals (Sweden)

    David Hess

    Full Text Available Snapping shrimp use one oversized claw to generate a cavitating high speed water jet for hunting, defence and communication. This work is an experimental investigation about the jet generation. Snapping shrimp (Alpheus-bellulus were investigated by using an enlarged transparent model reproducing the closure of the snapper claw. Flow inside the model was studied using both High-Speed Particle Image Velocimetry (HS-PIV and flow visualization. During claw closure a channel-like cavity was formed between the plunger and the socket featuring a nozzle-type contour at the orifice. Closing the mechanism led to the formation of a leading vortex ring with a dimensionless formation number of approximate ΔT*≈4. This indicates that the claw might work at maximum efficiency, i.e. maximum vortex strength was achieved by a minimum of fluid volume ejected. The subsequent vortex cavitation with the formation of an axial reentrant jet is a reasonable explanation for the large penetration depth of the water jet. That snapping shrimp can reach with their claw-induced flow. Within such a cavitation process, an axial reentrant jet is generated in the hollow cylindrical core of the cavitated vortex that pushes the front further downstream and whose length can exceed the initial jet penetration depth by several times.

  4. Nutritional aspects of irradiated shrimp

    International Nuclear Information System (INIS)

    Shamsuzzaman, K.

    1989-11-01

    Data available in the literature on the nutritional aspects of irradiated shrimp are reviewed and the indication is that irradiation of shrimp at doses up to about 3.2 kGy does not significantly affect the levels of its protein, fat, carbohydrate and ash. There are no reports on the effect of irradiation of shrimp above 3.2 kGy on these components. Limited information available indicates that there are some minor changes in the fatty acid composition of shrimp as a result of irradiation. Irradiation also causes some changes in the amino acid composition of shrimp; similar changes occur due to canning and hot-air drying. Some of the vitamins in shrimp, such as thiamine, are lost as a result of irradiation but the loss is less extensive than in thermally processed shrimp. Protein quality of shrimp, based on the growth of rats as well as that of Tetrahymena pyriformis, is not affected by irradiation. No adverse effects attributed to irradiation were found either in short-term or long-term animal feeding tests

  5. Determination of Profiles of Salmonella and Pathogenic Vibrio SPP. in Black Tiger Shrimp for Export by Introduction of Quality Assured Microbiological Assays

    Energy Technology Data Exchange (ETDEWEB)

    Wongchinda, N.; Sirimanuyutt, S.; Piromrak, R.; Rachniyom, S. [Fishery Technological Development Institute, Department of Fisheries, Bangkok (Thailand)

    2005-01-15

    Studies were conducted on contamination by Salmonella and pathogenic Vibrio spp. in samples of aquaculture black tiger shrimp, the water supply (canal water which is supplied as raw pond water before treatment), pond water, feed materials, and fresh and frozen shrimp. Salmonella was detected in samples of the water supply, pond water, feed materials, fresh shrimp at farm, fresh shrimp from wholesale market and frozen shrimp destined for export at levels of 13.95%, 1.53%, 1.14%, 3.17%, 30.4% and 0.21% respectively. V. cholerae non 01 was found in one sample of water from a culture pond of 131 tested (0.8%). V. parahaemolyticus was found in samples of canal water, pond water, fresh black tiger shrimp collected at farms, fresh black tiger shrimp collected at wholesale shrimp markets and frozen black tiger shrimp destined for export at levels of 2.3%, 5.3%, 14.3%, 48 % and 0.2% respectively. The strains identified as V. parahaemolyticus were examined for the presence or absence of the TDH and TRH. The incidence of TDH (KP+) was 2.67% (seven of 262 strains) and of TRH (urease reaction) was 1.15% (three of 262 strains). Salmonella and V. parahaemolyticus were found in a high percentage in fresh black tiger shrimp collected from wholesale shrimp markets. These shrimp are used as raw material for domestic consumption and for processing for exported shrimp products. Therefore GMP and/or Hazard Analysis Critical Control Point (HACCP) system for shrimp distributors/producers should be applied. (author)

  6. The rise and fall of pink disease.

    Science.gov (United States)

    Dally, A

    1997-08-01

    This paper explores the social and medical history and context of pink disease (acrodynia), a serious disease of infants and young children that baffled the medical world during the first half of the twentieth century until it was shown to be caused by mercury poisoning. In the English-speaking world the commonest source of the mercury was teething powders, which were widely available and advertised with increasing sophistication. Efforts to control them (such as the BMJ's campaign against 'Secret Remedies') were as yet unsuccessful. The article discusses the social conditions that influenced the existence and recognition of pink disease, the delay in finding its cause, the way in which it was explained as a virus infection or nutritional deficiency and why it seldom occurred outside the teething period. It discusses both professional and lay attitudes to health and diseases during the early twentieth century and provides a model of how the disease developed in a specific social setting and how the medical profession attempted to deal with it within the limitations of contemporary professional thought. The resistance to the evidence of mercury poisoning is typical of resistance to new medical knowledge and declined only when the opponents and sceptics grew old and disappeared from the scene. Meanwhile, the cause having been identified and accepted, pink disease disappeared, but its consequences emerged much later, in an unexpected quarter, as a cause of male infertility.

  7. Social and ecological challenges of market-oriented shrimp farming in Vietnam.

    Science.gov (United States)

    Lan, Ngo Thi Phuong

    2013-01-01

    Vietnam is one of the largest shrimp exporters in the world. Since 2010, Vietnam has earned about two billion dollars annually through shrimp exports. As a fertile area of greatest potential for agricultural production in Vietnam, the Mekong Delta has been a major contributor to the country's achievements, especially in the agricultural sector. During recent decades, trade liberation along with various policies in support of aquaculture has accelerated the development of shrimp production in the Delta. Based on an ethnographic study of shrimp farming in the Mekong Delta of Vietnam, I assert that along with great rewards arising from the expansion of shrimp farming areas, productivity, and export value, the shrimp industry has brought various environmental, economic and social challenges. Consequently, shrimp farming is a risky business and local inhabitants have relied on various strategies to cope with these challenges. Risk mitigation in shrimp production and labor migration are the two important strategies of local inhabitants for securing their livelihoods. Water pollution and poor quality post-larvae shrimp are direct consequences of market-oriented production.

  8. A Roseate Spoonbill hunts for food in the water.

    Science.gov (United States)

    1999-01-01

    A Roseate Spoonbill sweeps the water for food in the Merritt Island National Wildlife Refuge, which shares a boundary with Kennedy Space Center. The brilliant pink bird is named for its straight bill with the broad spatulate tip. Preferring a habitat of mangroves, it is usually found on the coasts of southern Florida and Texas, occasionally in Louisiana., in the West Indies, Mexico and Central and South America. Spoonbills feed on shrimps and fish in shallow waters, sweeping their bills from side to side and scooping up whatever they encounter. The 92,000- acre refuge is a habitat for more than 310 species of birds, 25 mammals, 117 fishes and 65 amphibians and reptiles. The marshes and open water of the refuge also provide wintering areas for 23 species of migratory waterfowl, as well as a year-round home for great blue herons, great egrets, wood storks, cormorants, brown pelicans and other species of marsh and shore birds.

  9. Effect of high hydrostatic pressure on the microbiological, biochemical characteristics of white shrimp Litopenaeus vannamei.

    Science.gov (United States)

    Li, Xiu-Xia; Tian, Xin; Li, Jian-Rong

    2016-06-01

    Using thermal processing (TP) treatment (100 ℃, 1-8 min) as a control, the effects of high hydrostatic pressure (HHP, 200-500 MPa, 2.5-20 min) on the microbiological and biochemical characteristics of white shrimp Litopenaeus vannamei were investigated. The results showed that the efficiency of polyphenol oxidase (PPO) inactivation and log reduction of total plate count (TPC) by HHP treatment were all significantly lower than by TP treatment (p pressure and holding time (p pressure of 300-500 MPa was higher than TP-treated samples, while the yield loss of HHP treatment was significantly lower than with TP treatment (p pressure of HHP treatment turned the appearance of shrimps slightly pink. © The Author(s) 2015.

  10. Radiocesium in marine fish, shrimps and scallops in coastal waters in Northern Norway and in the Barents Sea, measured over a period of two years

    International Nuclear Information System (INIS)

    Solberg, T.; Hellstroem, T.; Eikelmann, I.M.

    1995-01-01

    The paper deals with a national programme for assessing the radioactivity in marine species important for human consumption. The programme that started in 1993 and will continue for several years, focuses on the marine area of Norway north of the Arctic Circle. Using NaI detectors, measurements of 59 samples from fish, shrimps and scallops have recently been made. In all samples the radioactivity was below the detection limit (29 Bq/kg wet weight). Compared to the intervention levels for foodstuff, this level is negligible. 4 refs., 2 figs., 1 tab

  11. Influência de um cultivo de camarão sobre o metabolismo bêntico e a qualidade da água Influence of shrimp cultivation on the benthic metabolism and water quality

    Directory of Open Access Journals (Sweden)

    Ubiratan de Freitas

    2008-06-01

    enclosures. Existence of clear interference of the cultivation in the processes of benthic regeneration of nutrients was evident, resulting in increases of phosphorus (phosphate and nitrogen (in the ammonium form fluxes. Even considering that this activity has a local and temporary distribution (only 4 to 5 months of the year, it is important to call attention to the sediment oxygen consumption and the input of nutrients deriving from the regeneration of organic matter, which is enhanced in shallow waters and restricted circulation areas (such as small bays, locations where shrimp cultivation is developed in the Patos Lagoon Estuary.

  12. Length-weight relationship and condition factor of white shrimp Penaeus merguiensis captured in ecosystem mangrove of Bagan Asahan, Tanjungbalai, Asahan, North Sumatra, Indonesia

    Science.gov (United States)

    Suryanti, A.; Riza, N.; Raza'i, T. S.

    2018-02-01

    White Shrimp Penaeus merguiensis was commonly found in Mangrove Ecosystem of Bagan Asahan Village. The purpose of this research are to determine length-weight relationship and condition factor of white shrimp Penaeus merguiensis around ecosystem mangrove waters in Bagan Asahan Village. This research was conducted for 3 month in Maret until Mei 2017 with determination of research station used purposive sampling method. The shrimp samples were taken by shrimp trawl. The result showed that 98 shrimp which consists of 58 males and 40 female. The carapace length of female shrimp between 6,05 - 22,125 mm and total weight ranged from 0,12 - 6,95 g. Male shrimp had carapace length between 7.125 - 18.25 mm and total weigth ranged from 0.14 - 3.82 g. Female and male white shrimp had different growth pattern. Female shrimp had b = 2.984 included in negaive allometric and male shrimps with b = 3.187 included in positive allometric. The value of correlation coefficients was more than 90% for both male and female showed very strong relation between length carapace and body weight. The value of shrimp condition factor ranged from 0.570 - 1.773 and included to flat (thin) body shrimp.

  13. Scanning electron microscope observations of brine shrimp larvae from space shuttle experiments

    Science.gov (United States)

    DeBell, L.; Paulsen, A.; Spooner, B.

    1992-01-01

    Brine shrimp are encysted as gastrula stage embryos, and may remain dehydrated and encysted for years without compromising their viability. This aspect of brine shrimp biology is desirable for studying development of animals during space shuttle flight, as cysts placed aboard a spacecraft may be rehydrated at the convenience of an astronaut, guaranteeing that subsequent brine shrimp development occurs only on orbit and not on the pad during launch delays. Brine shrimp cysts placed in 5 ml syringes were rehydrated with salt water and hatched during a 9 day space shuttle mission. Subsequent larvae developed to the 8th larval stage in the sealed syringes. We studied the morphogenesis of the brine shrimp larvae and found the larvae from the space shuttle experiments similar in rate of growth and extent of development, to larvae grown in sealed syringes on the ground. Extensive differentiation and development of embryos and larvae can occur in a microgravity environment.

  14. CLUSTER MODEL FOR EXTENSIVE GIANT TIGER SHRIMP (Penaeus monodon Fab. TO PREVENT TRANSMISSION OF WHITE SPOT SYNDROME VIRUS

    Directory of Open Access Journals (Sweden)

    Arief Taslihan

    2015-06-01

    Full Text Available White spot syndrome virus (WSSV has become epidemic in Indonesia and affecting shrimp aquaculture interm of its production. White spot syndrome virus is transmitted from one to other ponds, through crustacean, included planktonic copepode as carrier for WSSV and through water from affected shrimp pond. A cluster model, consist of shrimp grow out ponds surrounded by non-shrimp pond as a role of biosecurity has been developed. The model aimed to prevent white spot virus transmission in extensive giant tiger shrimp pond. The study was conducted in two sites at Demak District, Central Java Province. As the treatment, a cluster consist of three shrimp ponds in site I, and two shrimp ponds in site II, each was surrounded by buffer ponds rearing only finfish. As the control, five extensive shrimp grow out ponds in site I and three shrimp grow out ponds in site II, with shrimp pond has neither applied biosecurity nor surrounded by non-shrimp pond as biosecurity as well considered as control ponds. The results found that treatment of cluster shrimp ponds surrounded by non-shrimp ponds could hold shrimp at duration of culture in the grow out pond (DOC 105.6±4.5 days significantly much longer than that of control that harvested at 60.9±16.0 days due to WSSV outbreak. Survival rate in trial ponds was 77.6±3.6%, significantly higher than that of control at 22.6±15.8%. Shrimp production in treatment ponds has total production of 425.1±146.6 kg/ha significantly higher than that of control that could only produced 54.5±47.6 kg/ha. Implementation of Better Management Practices (BMP by arranging shrimp ponds in cluster and surrounding by non-shrimp ponds proven effectively prevent WSSV transmission from traditional shrimp ponds in surrounding area.

  15. Assessment of shrimp farming impact on groundwater quality using analytical hierarchy process

    Science.gov (United States)

    Anggie, Bernadietta; Subiyanto, Arief, Ulfah Mediaty; Djuniadi

    2018-03-01

    Improved shrimp farming affects the groundwater quality conditions. Assessment of shrimp farming impact on groundwater quality conventionally has less accuracy. This paper presents the implementation of Analytical Hierarchy Process (AHP) method for assessing shrimp farming impact on groundwater quality. The data used is the impact data of shrimp farming in one of the regions in Indonesia from 2006-2016. Criteria used in this study were 8 criteria and divided into 49 sub-criteria. The weighting by AHP performed to determine the importance level of criteria and sub-criteria. Final priority class of shrimp farming impact were obtained from the calculation of criteria's and sub-criteria's weights. The validation was done by comparing priority class of shrimp farming impact and water quality conditions. The result show that 50% of the total area was moderate priority class, 37% was low priority class and 13% was high priority class. From the validation result impact assessment for shrimp farming has been high accuracy to the groundwater quality conditions. This study shows that assessment based on AHP has a higher accuracy to shrimp farming impact and can be used as the basic fisheries planning to deal with impacts that have been generated.

  16. Various Stages of Pink Fungus (Upasia salmonicolor in Java

    Directory of Open Access Journals (Sweden)

    Ambarwati Harsojo Tjokrosoedarmo

    1995-12-01

    Full Text Available Pink fungus in Java is classified as Upasia salmonicolor (Basidiomycetes: Corticiaceae and its anamorph is Necator decretus. This fungus is a serious pathogen which attacks many woody plants. The pink fungus in Java exhibits five developmental stages on the surface of the host bark: I. An initial cobweb stage as thin, white, cobweb-like hyphal layer, which creeps over the surface of the bark, during which penetration of the host occurs; II. Pseudonodular stage, as conical white pustules occurring only on lenticels or cracks, and only on shady side of branches; III. Teleomorph, occurs as pink incrustation and pink pustules on shady side of branches; IV. Nodular stages, as globose white pustules occurring chiefly on intact bark, but also on the lenticels or cracks, on exposed side of branches; V. Anamorph, as small orange-red sporodochium, on exposed side of branches. Key words: pink fungus, Corticiaceae, Basidiomycetes, Necator

  17. Juvenile Penaeid Shrimp Density, Spatial Distribution and Size ...

    African Journals Online (AJOL)

    The effects of habitat characteristics (mangrove creek, sandflat, mudflat and seagrass meadow) water salinity, temperature, and depth on the density, spatial distribution and size distribution of juveniles of five commercially important penaied shrimp species (Metapenaus monoceros, M. stebbingi, Fenneropenaeus indicus, ...

  18. Toward Improved Environmental and Social Management of Indian Shrimp Farming

    NARCIS (Netherlands)

    Hein, L.G.

    2002-01-01

    In the last decade, Indian shrimp aquaculture production tripled from 30,000 tons (1990) to 102,000 tons (1999). This fast development, combined with a lack of adequate planning and regulation, caused a number of environmental problems and social conflicts, including conversion of mangroves, water

  19. Chitosan from shrimp shell ( Crangon crangon ) and fish scales ...

    African Journals Online (AJOL)

    Chitosan is a naturally available biopolymer. It has been prepared by alkaline N deacetylation process of shrimp (Crangon crangon) chitin and fish (Labeorohita) chitin. The physico-chemical properties such as the degree of deacetylation (DD), solubility, water binding capacity, fat binding capacity and chitosan yield have ...

  20. IMPROVED PRODUCTION OF TIGER SHRIMP (Penaeus monodon THROUGH PROBIOTICS APPLICATION

    Directory of Open Access Journals (Sweden)

    Irsyaphiani Insan

    2015-12-01

    Full Text Available The study was carried out in Brebes District, the North coast of Java. Tiger shrimp farming in Indonesia, particularly in this area faced some problems which caused by improper pond preparation, disease, and low seed quality. Probiotic was applied in pond to solve this problem. The aim of this study was to evaluate the production of tiger shrimp in ponds with probiotic applications. Six experimental ponds (each measuring 0.5 ha were selected of which three were probiotic ponds and three were controlled. Tiger shrimp postlarvae (PL-30 were stocked at density of four shrimps/m2. Tiger shrimps were reared for three months. Shrimps were fed by commercial pellet. In the first month, shrimp were fed about 7%-5% of the total biomass; in the second months, 3.5%-3% of the total biomass; and in the third month, 2.5%-2% of the total biomass. The treatments in this study were the application of probiotics with concentration of 3 mg/L that were given every five days and control (without probiotics. The results showed the rearing period was 92 ± 6 days in probiotic ponds and 76 ± 16 days in controlled pond. The shrimp in controlled pond should be harvest earlier caused by the high mortality. The average final weight was 16.2 ± 0.7 g in probiotic pond and 15.6 ± 1.9 g in controlled pond. The survival rate was 64.13 ± 12.63% in probiotic pond and 44.17 ± 14.15% in controlled pond. Production was 208 ± 46 kg/pond/cycle in probiotic pond and 123 ± 6 kg/pond/cycle in controlled pond. The result showed that probiotic plays an important role in maintaining water quality parameters and health management as well as increases the survival of shrimp.

  1. Issues, impacts, and implications of shrimp aquaculture in Thailand

    Science.gov (United States)

    Dierberg, Forrest E.; Kiattisimkul, Woraphan

    1996-09-01

    Water quality impacts to and from intensive shrimp aquaculture in Thailand are substantial. Besides the surface and subsurface salinization of freshwaters, loadings of solids, oxygen-consuming organic matter, and nutrients to receiving waters are considerable when the cumulative impacts from water exchange during the growout cycle, pond drainage during harvesting, and illegal pond sediment disposal are taken into account. Although just beginning to be considered in Thailand, partial recirculating and integrated intensive farming systems are producing promising, if somewhat limited, results. By providing on-site treatment of the effluent from the shrimp growout ponds, there is less reliance on using outside water supplies, believed to be the source of the contamination. The explosion in the number of intensively operated shrimp farms has not only impacted the coastal zone of Thailand, but has also resulted in an unsustainable aquaculture industry. Abandonment of shrimp ponds due to either drastic, disease-caused collapses or more grandual, year-to-year reductions in the productivity of the pond is common. To move Thailand towards a more sustainable aquaculture industry and coastal zone environment, integrated aquaculture management is needed. Components of integrated aquaculture management are technical and institutional. The technical components involve deployment of wastewater treatment and minimal water-use systems aimed at making aquaculture operations more hydraulically closed. Before this is possible, technical and economic feasibility studies on enhanced nitrification systems and organic solids removal by oxidation between production cycles and/or the utilization of plastic pond liners need to be conducted. The integration of semi-intensive aquaculture within mangrove areas also should be investigated since mangrove losses attributable to shrimp aquaculture are estimated to be between 16 and 32% of the total mangrove area destroyed betweeen 1979 and 1993

  2. Insights into the gut microbiota of freshwater shrimp and its associations with the surrounding microbiota and environmental factors.

    Science.gov (United States)

    Zhao, Yanting; Duan, Cuilan; Zhang, Xuxiang; Chen, Huangen; Ren, Hongqiang; Yin, Ying; Ye, Lin

    2018-04-23

    The gut microbiota of aquatic animals plays a crucial role in host health through nutrient acquisition and outcompetition of pathogens. In this study, based on the high-throughput sequencing of 16S rRNA gene amplicons, we examined the bacterial communities in the gut of freshwater shrimp ( Macrobrachium nipponense ) and in their living environments (sediment and pond water) and analyzed the effects of abiotic and biotic factors on the shrimp gut bacterial communities. High bacterial heterogeneity was observed in the freshwater shrimp gut samples, and the result indicated that both the surrounding bacterial community and water quality factors (particularly dissolved oxygen and temperature) could affect the shrimp gut bacterial community. Despite the observed heterogeneity, 57 genera, constituting 38~99% of the total genera in each of the 40 shrimp gut samples, were identified as the main bacterial population in the gut of M. nipponense . In addition, a high diversity and abundance of lactic acid bacteria (26 genera), which could play significant roles in the digestion process in shrimp, were observed in the shrimp gut samples. Overall, this study provides insights into the gut bacterial communities of freshwater shrimp and basic information for shrimp farming regarding the application of probiotics and disease prevention.

  3. Biotechnological and Agronomic Potential of Endophytic Pink-Pigmented Methylotrophic Methylobacterium spp.

    OpenAIRE

    Dourado, Manuella Nóbrega; Aparecida Camargo Neves, Aline; Santos, Daiene Souza; Araújo, Welington Luiz

    2015-01-01

    The genus Methylobacterium is composed of pink-pigmented facultative methylotrophic (PPFM) bacteria, which are able to synthesize carotenoids and grow on reduced organic compounds containing one carbon (C1), such as methanol and methylamine. Due to their high phenotypic plasticity, these bacteria are able to colonize different habitats, such as soil, water, and sediment, and different host plants as both endophytes and epiphytes. In plant colonization, the frequency and distribution may be in...

  4. Distribution and biology of Indo-Pacific insular hypogeal shrimps

    Science.gov (United States)

    Maciolek, J.A.

    1983-01-01

    Ten species of caridean shrimps, representing nine genera in five families, have been found in exposures of the marine water table at 28 islands from Hawaii to the western Indian Ocean. Synthesis of literature information and personal observations indicate that, as a group, these shrimps are characterized by red body pigment, reduced but pigmented eyes, euryhalinity, a proclivity for interstitial seawater in limestone or lava rock, generalized food requirements, and probable pre-Pleistocene origins. The shrimps have not been found in waters cooler than about 20°C.Species are often solitary, but as many as five are known to coexist. Six of the species have widely scattered populations, some as far apart as Hawaii and the Red Sea. Passive oceanic dispersal is endorsed as a general explanation for such apparently disjunct distributions. On the basis of an assumed primary habitat requirement of interstitial marine water, which could include that in shallow submerged rock as well as that in emergent (insular) rock, I hypothesize a much more cosmopolitan distribution of these shrimps in the Indo-Pacific Tropical Zone.

  5. Polyculture of Litopenaeus vannamei shrimp and Mugil platanus mullet in earthen ponds

    Directory of Open Access Journals (Sweden)

    Léa Carolina de Oliveira Costa

    2013-09-01

    Full Text Available The objective of the present study was to evaluate the growth performance of the shrimp Litopenaeus vannamei and the mullet Mugil platanus in earthen ponds (200 m² located in the Laboratory of Continental Aquaculture of Universidade Federal do Rio Grande (FURG, in both polyculture and monoculture systems. The study consisted of three replicates, as follows: shrimp monoculture (SM, shrimp and mullet polyculture (PO and mullet monoculture (MM. The stocking density was 10 post-larvae shrimp (PL m−2 and 0.67 mullet m−2. Fish and shrimp were fed commercial shrimp meal (38% crude protein once a day. Initially, the amount of feed to shrimp was 20% of their total biomass which was later reduced to 5%. Mullets were fed at 5% of their stocked biomass. The experiment lasted 79 days during the summer of 2007/2008. At harvest, shrimp in monoculture had weight gain (15.59 g, specific growth rate (8.40% day−1, apparent feed conversion (0.88, survival (91% and production (1.454 kg ha−1 significantly higher than in polyculture (1.039 kg ha−1. Mullets in polyculture had significantly better weight gain (42.72 g and specific growth rate (3.99 % day−1 than those in monoculture (31.04 g and 3.69% day−1, respectively, while the mullet condition factor was significantly smaller in polyculture (1.06 than in monoculture (1.13. The apparent feed conversion of the mullets did not present significant differences between monoculture (2.50 and polyculture (2.40. The physical and chemical water parameters were not significantly different in any of the experiments, except for the transparency, which was higher in earthen ponds with mullet monoculture. Polyculture of shrimp and mullet reared together in earthen ponds negatively affects the shrimp production and favors the production of mullets.

  6. QUALITY OF THE WATER IN SHRIMP FARM Litopenaeus vannamei WITH SYSTEM OF PARTIAL RECIRCULATION SYSTEM. QUALIDADE DA ÁGUA EM FAZENDA DE CAMARÃO MARINHO Litopenaeus vannamei COM SISTEMA DE RECIRCULAÇÃO PARCIAL.

    Directory of Open Access Journals (Sweden)

    Luiz Otávio Brito

    2008-12-01

    Full Text Available The present work aim to characterize the quality of the water affluent and effluent of a shrimp Litopenaeus vannamei farm , which operates with system of partial recirculation system. The samples were accomplished during the low water and high tide periods of the day. The analyzed variables were: dissolved oxygen, temperature, pH, salinity, ammonia, nitrate, nitrite and phosphate. They samples were seven points, distributed strategically in way to characterize the water from the entrance going by the inside of the to your exit farm. ANOVA and Tukey test (P<0,05 were used in statistical analysis. Was observed the pH and dissolved oxygen stayed presenting averages of 7.72 and 6.58mg.L-1, respectively. The final averages went from 1.40 mg.L-1 to ammonia, 0.76 mg.L-1 for nitrate, 0.08 mg.L-1 for nitrite and 1.63 mg.L-1 for the phosphate.

    KEY WORDS: Quality of the water, recirculation, shrimp, vannamei.
    O presente trabalho teve como objetivo caracterizar a qualidade da água afluente e efluente de uma fazenda de camarão marinho Litopenaeus vannamei, que opera com sistema de recirculação parcial de água. As coletas foram realizadas durante os períodos de baixamar e preamar, diurnas, nos dias de lua. Analisaram-se as seguintes variáveis: oxigênio dissolvido, temperatura, pH, salinidade, amônia, nitrato, nitrito e fosfato. Escolheram-se sete pontos de coleta, distribuídos estrategicamente, de modo a caracterizar a água desde a entrada, passando pelo interior da fazenda até sua saída. Para análise estatística, utilizaram-se análise de variância (ANOVA e teste de Tukey (P<0,05. Observou-se que o pH e o oxigênio dissolvido apresentaram uma média de 7,72 e 6,58mg.L-1, respectivamente. As médias finais foram de 1,40mg.L-1 para amônia, 0,76mg.L-1 para nitrato, 0,08mg.L-1 para nitrito e 1,63mg.L-1 para o fosfato.

    PALAVRAS-CHAVES: Camarão, vannamei, qualidade da água, recirculação

  7. Role of women in Indian shrimp farming

    OpenAIRE

    Gopalakrishnan, A.

    1996-01-01

    Women in India are involved in various facets of shrimp (Penaeus monodon; Penaeus indicus) farming, including pond construction, seed collection, collection of feed materials and preparation of feeds, pond maintenance and post-harvest handling. This study indicates that 40% of laborers involved in shrimp farm construction are women. The various roles of women in shrimp farming are also described.

  8. Evaluation of green tea extract as a glazing material for shrimp frozen by cryogenic freezing.

    Science.gov (United States)

    Sundararajan, Srijanani; Prudente, Alfredo; Bankston, J David; King, Joan M; Wilson, Paul; Sathivel, Subramaniam

    2011-09-01

    Solutions of green tea (Camellia sinensis) extract (GTE) in distilled water were evaluated as a glazing material for shrimp frozen by cryogenic freezing. Total of 2%, 3%, and/or 5% GTE solutions (2GTE, 3GTE, 5GTE) were used for glazing. Distilled water glazed (GDW) and nonglazed shrimp (NG) served as controls. The GTE was characterized by measuring color, pH, (o) Brix, total phenols, and % antiradical activity. Individual catechins were identified by HPLC. The freezing time, freezing rate, and energy removal rate for freezing shrimp by cryogenic freezing process were estimated. The frozen shrimp samples were stored in a freezer at -21 °C for 180 d. Samples were analyzed for pH, moisture content, glazing yield, thaw yield, color, cutting force, and thiobarbituric acid reactive substances (TBARS) after 1, 30, 90, and 180 d. The HPLC analysis of GTE revealed the presence of catechins and their isomers and the total polyphenol content was 148.10 ± 2.49 g/L. The freezing time (min) and energy removal rate (J/s) were 48.67 ± 2.3 and 836.67 ± 78.95, respectively. Glazed samples had higher moisture content compared to NG shrimp after 180 d storage. GTE was effective in controlling the lipid oxidation in shrimp. Glazing with GTE affected a* and b* color values, but had no significant effect on the L* values of shrimp. © 2011 Institute of Food Technologists®

  9. Urea as a Nitrogen Source in a Black Tiger Shrimp (Penaeus monodon) Closed Culture System

    OpenAIRE

    Supannee SUWANPAKDEE; Sataporn DIREKBUSARAKOM; Piyapong CHOTIPUNTU; Putth SONGSANGJINDA

    2010-01-01

    Urea [(NH2)2CO] is an organic compound that serves an important role in the metabolism of nitrogen-containing compound by animals. Urea is widely used in aquaculture systems. This study investigated the effects of urea on growth of Penaeus monodon. Shrimp were reared in 500 l fiber tanks. There was no exchange of water throughout the experiment. Shrimp with an average body weight of 10.99 ± 0.19 g were stocked at a density of 32 shrimp/m2 in 20 ppt diluted seawater and fed with 38 % protein d...

  10. Analysis of the Exxon Valdez oil spill impacts on Prince William Sound pink salmon

    International Nuclear Information System (INIS)

    Brannon, E.L.; Moulton, L.L.; Maki, A.W.

    1996-01-01

    The impact of the Exxon Valdez oil spill on pink salmon in Prince William Sound (PWS), was studied. Since the incident, numerous and extensive field and laboratory studies have been completed by various scientists. This paper synthesized information on the post-spill salmon harvests, the concentration of petroleum that entered the water column, the number of streams oiled, and stream sediment chemistry, to determine the potential for oil spill effects. Results from this study showed that oiling to the extent experienced during incubation and rearing during both the spring and fall of 1989 through the spring of 1991, resulted in no measurable effects on the PWS pink salmon. The estimated losses predicted earlier, likely exceeded actual losses. 16 refs., 4 tabs., 4 figs

  11. Physicochemical Characterization of Biopolymer Chitosan Extracted from Shrimp Shells

    Directory of Open Access Journals (Sweden)

    Nezamaddin Mengelizadeh

    2015-02-01

    Full Text Available Chitosan is a deacetylated derivative of chitin, which is a naturally abundant mucopolysaccharide, supporting the matter of crustaceans, insects, and fungi. Because of its unique properties, such as non-toxicity, biodegradability, and biocompatibility, chitosan has a wide range of applications in various fields. The objective of the present work is to extract the polymer chitosan from Persian Gulf shrimp shells. In order to determine the physicochemical characteristics of the extracted chitosan, degree of deacetylation, molecular weight, water and fat binding capacities extraction rate, and apparent viscosity were measured using a variety of techniques including viscometry, weight measurement method and Fourier transform infrared spectroscopy (FTIR. The results of the study of the physicochemical properties, molecular weight (6.7×105 Da, degree of deacetylation (57%, ash content as well as yield (0.5% of the prepared chitosan indicated that shrimp processing wastes (shrimp shells are a good source of chitosan. The water binding capacity (521% and fat binding capacity (327% of the prepared chitosan are in good agreement with the other studies. The elemental analysis showed the C, H and N contents of 35.92%, 7.02%, and 8.66%, respectively. In this study, the antimicrobial activity of chitosan was evaluated against Staphylococcus aureus and Escherichia coli. The results indicated the high potential of chitosan as an antibacterial agent. Moreover, the results of the study indicated that shrimp shells are a rich source of chitin as 25.21% of the shell’s dry weight.

  12. Development of shrimp in small ponds

    Directory of Open Access Journals (Sweden)

    Armando Adolfo Ortega Salas

    2014-06-01

    Full Text Available Development of white shrimp Litopenaeus vannamei in small ponds ( 6 m3 in fresh water (2-3‰ and seawater; ponds 3.66 x 1.65 x 1.0 m; availability of fresh water, sea water, aeration and drainage. Two cycles of three months each were made. The postlarvae were acclimated to seawater fresh water in four days. Four hundred postlarvas/m3 were seeded in freshwater pond and 500 in the pool of seawater. First, a culture of Daphnia magna in the freshwater pond, also appeared chyronomid larvae; Artemia cysts were seeded in sea water as a dietary supplement. The shrimp were fed Camaronina (25% protein at libitum, daily; is offered on a tray of food; the temperature ranged between 27 and 30° C, oxygen 4.26 ± 1.43 mg / L , pH between 7 and 8 . Detritus siphoned every third day. Water changes between 10 and 20% are often performed. The feed conversion rate (FCR was 1:1.3 . The shrimp were measured in length and weight to calculate weekly growth by Bertalanffy model. Survival in the first cycle was 95.8 , and 97.9% for the second cycle. In seawater parameters of the population of the first cycle were k = 0.0301, L ∞ = 322.16 and t0 = -0.8852, the second cycle of k = 0.0203, L ∞ = 294.42 and t0 = -5.3771. The biomass of 27 kg was obtained for the first cycle and 16 kg for the second cycle. Freshwater population parameters of the first cycle were k = 0.0957, L ∞ = 146.98 and t0 = - 0.93; in the second cycle of k = 0.0172 , L ∞ = 367.82 and t0 = - 4.60. The biomass of 26 kg was obtained for the first cycle and 16 kg for the second cycle. The results indicate a rapid growth during the first 10 weeks. In small ponds can be handled well aseptic conditions without disease problems, good crop was obtained.

  13. Deep-water shrimp fisheries in Latin America: a review Pesquerías de camarones de aguas profundas en América Latina: una revisión

    Directory of Open Access Journals (Sweden)

    Ingo S Wehrtmann

    2012-09-01

    Full Text Available Commercial fisheries are expanding their activities into deeper water. The life history features of these deep-water resources make them more vulnerable to exploitation than most shallow-water resources. Moreover, the apparent lack of solid information about the ecology of most deep-water species represents a major limitation for the development and implementation of management strategies. This scenario has caused great concern regarding the sustainability of these resources and the possible environmental impacts on the deep-sea ecosystem. In Latin America, commercial fisheries are going deep as well, and considering the above-mentioned concerns, we felt the need to compile the available information about the deep-water shrimp resources and the current status of their fisheries in Latin America. Focusing on Mexico, Central America, Peru, Chile and Brazil, this review describes the exploited species, and, whenever available, the fishing fleet, fishery statistics, and management strategies. A total of 17 species (10 spp. of Penaeoidea; 7 spp. of Caridea are of commercial interest in Latin America, but deep-water shrimps are currently fished only in Costa Rica, Colombia and Chile. An implemented management plan exists in Chile and Colombia, while Brazil approved fishery regulations for the aristeid fishery, which were never implemented. Considering the lack of information about the biology of the deep-water shrimps, which hinders the development of adequate management strategies, we see the urgent need to improve the communication and collaboration between the different stakeholders in Latin American. We suggest the establishment of a searchable and constantly updated database, which may serve as a valuable source of information for researcher and decision makers. Finally, we propose the development of regional research plans aimed towards supporting measurements for a sustainable use of deep-water shrimps in Latin America.La pesca comercial est

  14. Brine shrimp lethality and antibacterial activity of extracts from the bark of Schleichera oleosa

    Directory of Open Access Journals (Sweden)

    Laxman Pokhrel

    2015-08-01

    Full Text Available Objective: To determine the antibacterial efficacy and brine shrimp toxicity of extracts (hexane, dichloromethane, ethyl acetate, methanol and water obtained from the bark of Schleichera oleosa. Methods: The powdered bark sample was Soxhlet extracted sequentially in hexanes, dichloromethane, ethyl acetate, methanol and water. Antibacterial evaluation was carried out by following the agar diffusion method and amoxicillin disc was used as a reference. Slightly modified Meyer’s method was used to determine the toxicity of the extracts in brine shrimps. Results: Among the nine bacterial strains tested, the methanolic and aqueous extracts showed promising antibacterial efficacy against Serratia marcescens, Escherarichia coli, Bacillus subtilis and Micrococcus luteus. None of the extracts were found significantly toxic to brine shrimps. Conclusions: Strong antibacterial activity and low brine shrimp toxicity of methanolic and aqueous extracts can provide new antibacterial compounds.

  15. Accumulation of pesticide residues by shrimp, fish and brine shrimp during pond culture at Ghorabari (District Thatta)

    International Nuclear Information System (INIS)

    Sultana, R.; Wajeeha, F.A.; Ameer, F.; Munshi, A.B.; Nasir, M.

    2012-01-01

    Residual level of persistent organo chlorines (OC) such as sigma-HCH (alpha-HCH, beta-HCH, gamma-HCH, delta-HCH, sigma-DDT (o,p'-DDD, op-DDE, p,p-DDE pp-DDD, pp'-DDT, o,p'-DDT), dieldrin and endrin were measured in a number of water samples from Ambro creek and their accumulation in shrimp (Penaeus merguiensis and P. penicillatus), fish (Otolithes ruber) and brine shrimp (Artemia sp.) reared in ponds for a period of four months. Samples were extracted with organic solvents, and quantified using gas chromatography-electron capture detection (GC/ECD). It has been found that results of animal tissue and water are not same however OCs, (mainly sigma DT and beta-HCH 4,4-DDT, Dieldrin + 2,4-DDT, and Methoxychlor were detected in all samples ). Heptachlor exo-epoxide were found in fish and Artemia sp. and absent in all shrimp samples. Heptachlor endo-epoxide was detected only in Artemia sp. and average residual concentration of OCs in Artemia sp. was 0.004-0.09 ppm. Methoxychlor was found in the highest quantity in all the samples whether it was fish, shrimp or Artemia. In fish average residual concentration of all (OCs) in individual sample was 0.03 - 0.180 ppm. (author)

  16. USE OF SPONGE, Callyspongia basilana EXTRACT AS ADDITIVE MATERIAL ON TIGER SHRIMP CULTURE

    Directory of Open Access Journals (Sweden)

    Rosmiati Rosmiati

    2010-06-01

    Full Text Available Blue shrimp disease is one of the main problems in tiger shrimp culture. It reduces shrimp quality which eventually will decrease its market price. Blue shrimp is caused by deficiency of nutrition and additive materials such as carotene and other nutrient which function as vitamin source for important metabolic processes and formation of color profile in shrimp and fish. The aims of this study were to study the application effect of carotenoid extract of sponge Callyspongia basilana, as an additive material on the ability of shrimp to get back to normal state after suffering blue shrimp disease and survival rate of shrimp and to find out the optimal concentration of sponge carotenoid extract to cure the diseased shrimp. This study was consisted of two steps namely; (1. Extraction of sponge carotenoid by maseration and fractionation using acetone and petroleum ether solvents and (2, the application of carotenoid extract on the diseased shrimp. The research was arranged in a complete randomized design with four experiments consisted of (A. Control (without carotenoid extract; (B,(C, and (D carotetoid extract addition of 3 mg/L, 6 mg/L, and 9 mg/L respectively with three replication each. The test animal used were blue diseased tiger shrimp with the density of 15 ind./container having 7.5–9.5 cm in size and the average weight of 5.5–10.0 g. The study showed that Callyspongia basilana carotenoid extract was able to change blue diseased shrimp to be normal within six days at the concentration of 9 mg/L. The highest survival rate was found in the experiment D (93.3%. Meanwhile, the lowest was obtained by the control population (13.3% and the other two treatments were 80.0%(C and 73.3% (B. The average of water quality parameters such as temperature, dissolved oxygen, pH, salinity, nitrite, and ammonia were in the suitable range for the growth and survival rate of tiger shrimp.

  17. Effect of Protein-Based Edible Coating from Red Snapper (Lutjanus sp.) Surimi on Cooked Shrimp

    Science.gov (United States)

    Rostini, I.; Ibrahim, B.; Trilaksani, W.

    2018-02-01

    Surimi can be used as a raw material for making protein based edible coating to protect cooked shrimp color. The purpose of this study was to determine consumers preference level on cooked shrimp which coated by surimi edible coating from red snapper and to know the microscopic visualization of edible coating layer on cooked shrimp. The treatments for surimi edible coating were without and added by sappan wood (Caesalpinia sappan Linn) extract. Application of surimi edible coating on cooked shrimp was comprised methods (1) boiled then coated and (2) coated then boiled. Edible coating made from surimi with various concentrations which were 2, 6, 10 and 14% of distillated water. The analysis were done using hedonic test and microscopic observation with microscope photographs. Effect of surimi edible coating on cooked shrimp based on the hedonic and colour test results showed that the 14% surimi concentration, added by sappan wood (Caesalpinia sappan Linn) extract on edible coating was the most preferable by panellist and giving the highest shrimp colour. The edible coating surimi application on cooked shrimp which gave the best result was processed by boiling followed by coating.

  18. Pink Salmon Distribution, Pacific Northwest (updated March, 2006)

    Data.gov (United States)

    Pacific States Marine Fisheries Commission — This dataset is a record of fish distribution and activity for PINK SALMON contained in the StreamNet database. This feature class was created based on linear event...

  19. Physical profile data from CTD casts from the RV Medeia in the coastal waters of Southeast Alaska in support of the SE Alaska Shrimp and Tanner Surveys from 06 September 2010 to 21 October 2010 (NODC Accession 0069122)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Alaska Department of Fish and Game conducts annual shellfish surveys that include Red King Crab, Tanner Crab, and Shrimp which is used to manage the personal...

  20. Social Relation between Businessman and Community in Management of Intensive Shrimp Pond

    Science.gov (United States)

    Gumay Febryano, Indra; Sinurat, James; Lovinia Salampessy, Messalina

    2017-02-01

    Expansion of aquaculture, especially shrimp culture, is the primary cause of deforestation of mangrove along coastal zone. This phenomenon is pretty much related to social relation between businessman of intensive shrimp pond and community around coastal zone. The objective of this research is to explain social relation between businessman and community in managing intensive shrimp pond. This research is a kind of qualitative research and the method used is a case study. The result of this research shows that the behaviour of the majority of businessman of intensive shrimp pond is not accordingly with environmental concerns as they compelled conversion of mangrove and they disposed waste of shrimp pond into the sea. Such kind of behaviour caused degradation of water ecosystem and marginalizing local community. Corporate Social Responsibility (CSR) which was implemented by businessman of intensive shrimp pond in the area of social, religion, and education can downgrade the coming up of social turbulence. Otherwise, CSR in enabling economic community and environmental management was not conducted yet. CSR in environmental management can be conducted by businessman of intensive shrimp pond by considering the existence of mangrove and pond management and waste in a better way, so that environment around ponds is not polluted and the sustainability of shrimp pond business as well as income of community can be guaranteed. Accordingly with the result of this research, CSR is not only involving businessman of intensive shrimp pond and community, but also involving local government in terms of right and responsibility of citizen as well as management and development of community.

  1. Laboratory evidence for short and long-term damage to pink salmon incubating in oiled gravel

    International Nuclear Information System (INIS)

    Heintz, R.; Rice, S.; Wiedmer, M.

    1995-01-01

    Pink salmon, incubating in gravel contaminated with crude oil, demonstrated immediate and delayed responses in the laboratory at doses consistent with the concentrations observed in oiled streams in Prince William Sound. The authors incubated pink salmon embryos in a simulated intertidal environment with gravel contaminated by oil from the Exxon Valdez. During the incubation and emergence periods the authors quantified dose-response curves for characters affected directly by the oil. After emergence, fish were coded wire tagged and released, or cultured in netpens. Delayed responses have been observed among the cultured fish, and further observations will be made when coded wire tagged fish return in September 1995. The experiments have demonstrated that eggs need not contact oiled gravel to experience increased mortality, and doses as low as 17 ppb tPAH in water can have delayed effects on growth. A comparison of sediment tPAH concentrations from streams in Prince William Sound with these laboratory data suggests that many 1989 brood pink salmon were exposed to deleterious quantities of oil

  2. Production of dried shrimp mixed with turmeric and salt by Spouted Bed technique enter the rectangular chamber.

    Science.gov (United States)

    Thanthong, P.; Mustafa, Y.; Ngamrungroj, D.

    2017-09-01

    Today, dried shrimp in the market were refused food colour and drying until shrimp are colourful and tasty. Meanwhile, Community groups, women’s health trying to produce food products come from herbs. As an alternative to consumers. The production process is also a traditional way to dry. In order to extend the shelf life longer. Sometimes, potential risks, both in quality and quantity of products. As a result, consumers are enormous. Thus, this research aims to study the possibility to produce shrimp dried mixed with turmeric and salt. Then dried shrimp mixed with turmeric and salt to keep up the quality criteria of the Food and Drug Administration-FDA It can reduce the risk of the consumer and can keep up in a kitchen Thailand. When buying shrimp from the fisherman’s boat Will be made clear, clean impurities and shaking the sand to dry. Prepare a mixture of turmeric and salt. The shrimp were dipped into a beef with stirrer for 3 minutes. And scoop up centrifugal shrimp with dried. Measurement of initial moisture content averaging 78%wb. Then drying technique Spouted enter the rectangular chamber a continuous manner. Until average moisture content to 17%wb. The air temperature in the drying chamber at 180 °C and hot air speed 4.5 m/s, a state heat transfer Mass and moisture within the shrimp. In chamber when drying, the shrimp have moved freely behaviour can spit water out faster does not burn. Shaving legs of shrimp shell fragments lightweight is sorting out the top of drying chamber. Private shrimp were dried out to the front of the quad drying chamber. Power consumption 27.5 MJ/kg, divided into electrical energy 12.3 MJ/kg and thermal energy is 15.2 MJ/kg. The hot air comes from burning LPG gas burner with dual automatic. And can adjustable to room temperature drying characteristics modulation setting.

  3. Prevalence and characterization of Vibrio cholerae isolated from shrimp products imported into Denmark

    DEFF Research Database (Denmark)

    Dalsgaard, A.; Bjergskov, T.; Jeppesen, V.F.

    1996-01-01

    A total of 3,555 metric tonnes of warm water shrimp were imported into Denmark from December 1994 to July 1995. V. cholerae O1 was not detected in any of the 748 samples analyzed. Non-Ol V. cholerae was found in a single (0.1%) cooked frozen shrimp product and in five (0.7%) raw frozen products......, all originating from shrimp produced in aquaculture. Six isolated strains agglutinated in polyvalent O antisera, but did not agglutinate in Ogawa or Inaba antisera. The six strains were resistant to colistin and sulfisoxazole; three strains also showed resistance to ampicillin. None of the strains...... contained plasmids or genes encoding cholera toxin (CT) or heat-stable enterotoxin (NAG-ST), The absence of V. cholerae O1 and the low number of samples containing CT and NAG-ST negative non-Ol strains in imported shrimp suggest that I! cholerae in such products may not constitute a public health problem....

  4. Information Seeking Behaviour of Shrimp Farmers and their Perception towards Technology Dissemination through Mobile Phones

    Directory of Open Access Journals (Sweden)

    Anand PR

    2017-12-01

    Full Text Available A study was conducted among the shrimp farmers to ascertain their information seeking behaviour and perception concerning extension service through mobile phones. The findings indicate that the farmer respondents were of the perception that mobile phone-aided extension service is a viable, expedient, prompt, cost-effective and novel approach. Further they expressed that a dedicated mobile app on shrimp farming with dynamic content modules on ‘disease diagnosis, calculations for water quality corrections, feed management, pond risk management and post your query ’would be very useful for farmers and extension workers to update their capacity and sharing of field experiences. Therefore, developing a mobile app on shrimp farming, incorporating the above features would enhance the access to quality information and minimise the information gap among the shrimp farmers.

  5. Clonal Occurrence of Salmonella Weltevreden in Cultured Shrimp in the Mekong Delta, Vietnam

    Science.gov (United States)

    Noor Uddin, Gazi Md.; Larsen, Marianne Halberg; Barco, Lisa; Minh Phu, Tran; Dalsgaard, Anders

    2015-01-01

    This study investigated the occurrence, serovar and antimicrobial resistance of Salmonella spp. in shrimp samples from intensive and extensive farms located in three different provinces in the Mekong Delta, Vietnam. Shrimp from 11 of the 48 farms all contained S. Weltevreden, except for one farm yielding S. Agona, with no difference in Salmonella occurrence between the two production systems. Pulsed field gel electrophoresis (PFGE) of S. Weltevreden showed closely related XbaI pulse types, suggesting a clonal relationship despite the farms and shrimp samples being epidemiologically unrelated. S. Weltevreden was susceptible to most antimicrobials tested, with a few strains being resistant to florfenicol, chloramphenicol, sulfamethoxazole or trimethoprim. Future studies of the ecology of S. Weltevreden should establish if this serovar may survive better and even multiply in warm-water shrimp farm environments compared to other Salmonella serovars. PMID:26222547

  6. Clonal Occurrence of Salmonella Weltevreden in Cultured Shrimp in the Mekong Delta, Vietnam.

    Directory of Open Access Journals (Sweden)

    Gazi Md Noor Uddin

    Full Text Available This study investigated the occurrence, serovar and antimicrobial resistance of Salmonella spp. in shrimp samples from intensive and extensive farms located in three different provinces in the Mekong Delta, Vietnam. Shrimp from 11 of the 48 farms all contained S. Weltevreden, except for one farm yielding S. Agona, with no difference in Salmonella occurrence between the two production systems. Pulsed field gel electrophoresis (PFGE of S. Weltevreden showed closely related XbaI pulse types, suggesting a clonal relationship despite the farms and shrimp samples being epidemiologically unrelated. S. Weltevreden was susceptible to most antimicrobials tested, with a few strains being resistant to florfenicol, chloramphenicol, sulfamethoxazole or trimethoprim. Future studies of the ecology of S. Weltevreden should establish if this serovar may survive better and even multiply in warm-water shrimp farm environments compared to other Salmonella serovars.

  7. The potential use of constructed wetlands in a recirculating aquaculture system for shrimp culture

    International Nuclear Information System (INIS)

    Lin, Y.-F.; Jing, S.-R.; Lee, D.-Y.

    2003-01-01

    Constructed wetlands improved water qualities and consequently increased the shrimp growth and survival in a recirculating system. - A pilot-scale constructed wetland unit, consisting of free water surface (FWS) and subsurface flow (SF) constructed wetlands arranged in series, was integrated into an outdoor recirculating aquaculture system (RAS) for culturing Pacific white shrimp (Litopenaeus vannamei). This study evaluated the performance of the wetland unit in treating the recirculating wastewater and examined the effect of improvement in water quality of the culture tank on the growth and survival of shrimp postlarvae. During an 80-day culture period, the wetland unit operated at a mean hydraulic loading rate of 0.3 m/day and effectively reduced the influent concentrations of 5-day biochemical oxygen demand (BOD 5 , 24%), suspended solids (SS, 71%), chlorophyll a (chl-a, 88%), total ammonium (TAN, 57%), nitrite nitrogen (NO 2 -N, 90%) and nitrate nitrogen (NO 3 -N, 68%). Phosphate (PO 4 -P) reduction was the least efficient (5.4%). The concentrations of SS, Chl-a, turbidity and NO 3 -N in the culture tank water in RAS were significantly (P≤0.05) lower than those in a control aquaculture system (CAS) that simulated static pond culture without wetland treatment. However, no significant difference (P≤0.05) in BOD 5 , TAN and NO 2 -N was found between the two systems. At the end of the study, the harvest results showed that shrimp weight and survival rate in the RAS (3.8±1.8 g/shrimp and 90%) significantly (P≤0.01) exceeded those in the CAS (2.3±1.5 g/shrimp and 71%). This study concludes that constructed wetlands can improve the water quality and provide a good culture environment, consequently increasing the shrimp growth and survival without water exchange, in a recirculating system

  8. The potential use of constructed wetlands in a recirculating aquaculture system for shrimp culture

    Energy Technology Data Exchange (ETDEWEB)

    Lin, Y.-F.; Jing, S.-R.; Lee, D.-Y

    2003-05-01

    Constructed wetlands improved water qualities and consequently increased the shrimp growth and survival in a recirculating system. - A pilot-scale constructed wetland unit, consisting of free water surface (FWS) and subsurface flow (SF) constructed wetlands arranged in series, was integrated into an outdoor recirculating aquaculture system (RAS) for culturing Pacific white shrimp (Litopenaeus vannamei). This study evaluated the performance of the wetland unit in treating the recirculating wastewater and examined the effect of improvement in water quality of the culture tank on the growth and survival of shrimp postlarvae. During an 80-day culture period, the wetland unit operated at a mean hydraulic loading rate of 0.3 m/day and effectively reduced the influent concentrations of 5-day biochemical oxygen demand (BOD{sub 5}, 24%), suspended solids (SS, 71%), chlorophyll a (chl-a, 88%), total ammonium (TAN, 57%), nitrite nitrogen (NO{sub 2}-N, 90%) and nitrate nitrogen (NO{sub 3}-N, 68%). Phosphate (PO{sub 4}-P) reduction was the least efficient (5.4%). The concentrations of SS, Chl-a, turbidity and NO{sub 3}-N in the culture tank water in RAS were significantly (P{<=}0.05) lower than those in a control aquaculture system (CAS) that simulated static pond culture without wetland treatment. However, no significant difference (P{<=}0.05) in BOD{sub 5}, TAN and NO{sub 2}-N was found between the two systems. At the end of the study, the harvest results showed that shrimp weight and survival rate in the RAS (3.8{+-}1.8 g/shrimp and 90%) significantly (P{<=}0.01) exceeded those in the CAS (2.3{+-}1.5 g/shrimp and 71%). This study concludes that constructed wetlands can improve the water quality and provide a good culture environment, consequently increasing the shrimp growth and survival without water exchange, in a recirculating system.

  9. The effect of three culture methods on intensive culture system of pacific white shrimp ( Litopenaeus vannamei)

    Science.gov (United States)

    Ma, Zhen; Wan, Rong; Song, Xiefa; Gao, Lei

    2013-09-01

    Different culture methods may affect the intensive culture system of Pacific white shrimp ( Litopenaeus vannamei) regarding water quality and growth and economic performance. This study evaluated the potential effects of three culture methods through cultivation of juvenile shrimps under consistent tank management conditions for 84 d. The three methods involved shrimp cultivation in different tanks, i.e., outdoor tanks with cement bottom (mode-C), greenhouse tanks with cement bottom (mode-G) and outdoor tanks with mud-substrate (mode-M). Results showed that water temperature was significantly higher in mode-G than that in mode-C ( P shrimps. In the mid-late period, the average concentrations of TAN, NO2-N, DIP and COD were significantly lower in mode-M and mode-G compared with those in mode-C ( P shrimp weight among different treatments ( P > 0.05), mode-M had significantly higher shrimp yield, survival rate and feed conversion rate ( P < 0.05) than other modes. There were significant differences in revenue and net return among different treatments ( P < 0.05). These demonstrated that the treatments of mode-G and mode-M were conductive to the intensive culture system of L. vannamei.

  10. Polyculture Engineering technology of larasati red tilapia (Oreochromis niloticus) and white shrimp (Litopenaeus vannamei) based for protease enzyme

    Science.gov (United States)

    Samidjan, I.; Rachmawati, D.

    2018-04-01

    The objective is polyculture technology of red tilapia larasati fish and white shrimp with different combinations density. The material is saline red tilapia larasati 3.29 ± 0.018 g and white shrimp with initial weight 1.39 ± 0.025 g. Seeds are density of red tilapia larasati larvae 5 and 10 larvae / m2 fish. And white shrimp 5 larvae / m2 and 10 larvae / m2. An artificial feed used enzyme dose of 2.25 g / kg. The experimental using complete randomized design 4 treatments and 3 replications that is given seeds 5 larvae / m2 larvae red tilapia larasati and given 5 larvae / m2 white shrimp (A), 5 larvae / m2 red tilapia) and 10 m2 / m2 of white shrimp (B), 10 m2 larvae and 5 m2 white shrimp (C), 10 m2 larvae and 10 m2 white shrimp (D)). The data were growth of absolute weight, survival rate, FCR, and water quality data (temperature, salinity, pH, O2, NO2, NH3). Data were analyzed of variance (F test). The results showed significantly effect (P shrimp (25.25 ± 0.95 g).

  11. EFFECT OF DIFFERENT PROBIOTIC BACTERIA ON SURVIVAL RATE, GROWTH, AND PRODUCTION OF WHITELEG SHRIMP IN TRADITIONAL-PLUS TECHNOLOGY

    Directory of Open Access Journals (Sweden)

    Muharijadi Atmomarsono

    2015-06-01

    Full Text Available Instead of culturing tiger shrimp that is frequently burdened by mass mortality, whiteleg shrimp (Litopenaeus vannamei is then considered as an alternative commodity in Indonesian brackishwater ponds. To prevent the whiteleg shrimp from diseases, different probiotic bacteria were tested in completely randomized design experiment using nine 250 m2 experimental ponds stocked with 10 PLs of whiteleg shrimp fry/m2. Three treatments were applied, namely A alternate use of probiotic bacteria RICA-1, RICA-2, RICA-3; B alternate use of probiotic bacteria RICA-4, RICA-5, RICA-3, and C control (without probiotic bacteria; each with three replications. After 11-week application, the results showed that the best survival rate of whiteleg shrimp was achieved by treatment B 98.83% and the best production was achieved by treatment A (23.52 kg/250 m2. However, there were no significant differences (P>0.05 among the three treatments tested for the shrimp survival rate. The whiteleg shrimp production in treatment A and B were signicantly better (P<0.05 than that in treatment C (control. These high shrimp production in treatment A and B were mainly caused by the capability of the applied probiotics in controlling some water quality variables and Vibrio numbers.

  12. Utilization of Black Tiger Shrimp Flesh Waste for Pop Shrimp Processing

    Directory of Open Access Journals (Sweden)

    Hari Eko Irianto

    2017-05-01

    Full Text Available A study on the utilization of black  tiger shrimp (Penaeus monodon flesh waste in the processing of pop shrimp has been carried out.  So far, shrimp flesh waste is used for the production of shrimp paste, and shrimp cracker.   The objective of this study was to develop a fomula for pop shrimp production using shrimp flesh waste. Experimental design applied in this study was three-variables mixture design, in which variables observed were shrimp flesh waste, surimi and tapioca flour. Pop shrimp obtained was evaluated for sensory properties. The best product processed using a selected formula was analysed chemically and microbiologically, particularly for proxymate composition and total plate count respectively. Selected formula of pop shrimp consisted of 50.91% shrimp flesh waste, 18.18% surimi, 3.64% tapioca flour, 10.91% onion, 2.18% garlic, 0.73% pepper powder, 1.45% sugar, 0.36% monosodium glutamate, 0.73% ginger, 1.45% salt, 4.44% butter mix, 1.38% corn flour (maizena and 3.64% bread crumb. Proxymate composition of the best pop shrimp was 70.52% moisture, 0.73% ash, 0.39% fat, and 7.44% protein, while microbiological load in terms of total plate count was 3.3x103 colonies/g.

  13. Biotransformation and accumulation of selenium inside organisms in an engineered aquatic ecosystem designed for bioremediation of Se from agriculture drainage water and brine shrimp production

    Science.gov (United States)

    Excessive selenium (Se) in soils and waters present in the westside of central California was determined to be responsible for ecotoxicities observed in water fowl frequenting large bodies of water, i.e., evaporation ponds. In order to monitor the fate and potentially design an aquatic Se remediatio...

  14. Uptake and retention of 124Sb in the common mussel, shrimp and shore crab

    International Nuclear Information System (INIS)

    Weers, A.W. van

    1981-01-01

    The uptake of radioactive antimony from water and food by mussels, shrimps and shore crabs and the subsequent loss in non-radioactive sea water were studied with 124 Sb. The concentration factors of about 0.6 for mussels and 2.5 for shrimps, reached by direct uptake from sea water, remained considerably below stable-antimony concentration factors reported for these organisms. The loss of 124 Sb after uptake of the radionuclide by mussels during 19 and 32 days respectively, could be described by a loss from two compartments with different rates. The distribution of the radionuclide in the animals did not change during the retention period. Antimony-124 taken up from sea water by shrimps was largely accounted for by adsorption to the exoskeleton, as was shown by the effect of moulting on the time course of subsequent loss in non-radioactive sea water. Antimony-124 applied to freeze-dried mussel flesh that was fed to shrimps was lost according to a single exponential function. The mean biological half-life of 124 Sb elimination was about 10 days. Two components were shown to be present in the retention of 124 Sb in two groups of shore crabs, one of which was fed freeze-dried shrimps spiked with 124 Sb, while the second group received shrimps labelled by uptake of 124 Sb with food. The only significant difference between the two groups was a longer mean biological half-life of the short-lived component in the second group. In shrimps and crabs only a small fraction of 124 Sb taken up with food ends up in the exoskeleton. About 45% of retained activity in crabs was found in the digestive gland. (author)

  15. Behavioural response of pink salmon Fry Oncorhynchus gorbuscha to fresh, weathered, and dispersed crude oil

    International Nuclear Information System (INIS)

    Moles, A.

    2009-01-01

    Very little is known about fish behaviour in relation to oil spill contamination. In this study, out-migrant pink salmon fry Oncorhynchus gorbuscha were subjected to varying concentrations of oil and sea water solutions, or uncontaminated sea water at a temperature of 7 degrees C. Fresh oil, artificially weathered oil, and dispersed oil samples were used. Twenty trials were run for concentrations of 48 aromatic and 30alkane hydrocarbons. The number of minutes spent in the uncontaminated water was significantly higher than sample areas. Fry avoided water-accommodated mixtures of Alaska North Slope crude oil in sea water at concentrations of 960 mg/L total aromatic hydrocarbon fresh oil and 873 mg/L total aromatic hydrocarbon dispersed oil. Concentrations corresponded to 75 per cent and 68 per cent of the median lethal concentration level. However, the fry did not avoid the weathered oil, which indicated that the fry may be sensitive to monoaromatic hydrocarbon components in the oil. It was concluded that oil pollution may alter pink salmon migration behaviour. 28 refs., 1 tab., 2 figs

  16. Enhancing Ecoefficiency in Shrimp Farming through Interconnected Ponds

    Directory of Open Access Journals (Sweden)

    Ramón Héctor Barraza-Guardado

    2015-01-01

    Full Text Available The future development of shrimp farming needs to improve its ecoefficiency. The purpose of this study was to evaluate water quality, flows, and nitrogen balance and production parameters on a farm with interconnected pond design to improve the efficiency of the semi-intensive culture of Litopenaeus vannamei ponds. The study was conducted in 21 commercial culture ponds during 180 days at densities of 30–35 ind m−2 and daily water exchange <2%. Our study provides evidence that by interconnecting ponds nutrient recycling is favored by promoting the growth of primary producers of the pond as chlorophyll a. Based on the mass balance and flow of nutrients this culture system reduces the flow of solid, particulate organic matter, and nitrogen compounds to the environment and significantly increases the efficiency of water (5 to 6.5 m3 kg−1 cycle−1, when compared with traditional culture systems. With this culture system it is possible to recover up to 34% of the total nitrogen entering the system, with production in excess of 4,000 kg ha−1 shrimp. We believe that the production system with interconnected ponds is a technically feasible model to improve ecoefficiency production of shrimp farming.

  17. Effect of ante-mortem hypoxia on the physicochemical and functional properties of white shrimp (Litopenaeus vannamei) muscle stored on ice.

    Science.gov (United States)

    García-Sifuentes, Celia Olivia; Pacheco-Aguilar, Ramón; Scheuren-Acevedo, Susana María; Carvallo-Ruiz, Gisela; Garcia-Sanchez, Guillermina; Gollas-Galván, Teresa; Hernández-López, Jorge

    2013-06-01

    The effect of ante-mortem hypoxia on the physicochemical and functional properties of raw and cooked white shrimp was studied. Hue angle was greater (p ≤ 0.05) for stressed raw shrimp compared to control (greener color); whereas a lower angle was detected for cooked stressed shrimp (redder/orange coloration). In addition, hue angle increased (p ≤ 0.05) over the ice storage period for control and stressed shrimp (raw and/or cooked). Muscle hardness and shear force showed no differences when comparing control and stressed shrimp (raw and/or cooked). However, during ice storage, shear force increased (p ≤ 0.05) by 22% and 9% for control and stressed raw shrimp, respectively; in contrast, shear force and muscle hardness decreased for cooked shrimp (p ≤ 0.05). Control showed more (p ≤ 0.05) elasticity than stressed cooked shrimp. Stressed raw shrimp showed a water holding capacity 10.8% lower (p ≤ 0.05) than control. However, during the storage, water holding capacity increased (p ≤ 0.05) reaching similar values to control after day 4. Muscle protein solubility of stressed shrimp was 31% lower than control; however, no differences (p > 0.05) were observed after the second day. The thermal stability of myosin (T max) showed differences (p ≤ 0.05) among control and stressed shrimp, whereas no differences for ΔH were observed. Results showed the influence of ante-mortem hypoxia on the physicochemical and functional properties of white shrimp muscle.

  18. Aspects of the biology of the Atlantic Midshipman, Porichthys porosissimus (Teleostei, Batrachoididae: an important by-catch species of shrimp trawling off southern Brazil

    Directory of Open Access Journals (Sweden)

    Marcelo Vianna

    2000-01-01

    Full Text Available Trawl fishing for pink shrimp (Farfantepenaeus brasiliensis and F. paulensis catches large quantities of by-catch fish, discarded due to their having no commercial vaue. As these species have rarely been studied, the impact of fisheries on these populations is not known. This contribution studies the biology of a species of no commercial value, the Atlantic midshipman Porichthys porosissimus. The last haul /Tom a commercial trawler, operating on the northern coast of São Paulo State and the southern coast of Rio de Janeiro State, was preserved (/Tom being discarded and identified at the species leveI. It was observed that this fishery affects the juvenile population which is intluenced by the seasonal variation of the water masses. Growth parameters were estimated: L∞ = 37.0 cm, K = 0.285 year-1. Instantaneous mortality coefficients were estimated: 2=2.14, M=0.63, F= 1.51, S= 11.8 and E=0.71. Considering the intensive activity of the shrimp trawl tleet operating in this area, the deleterious action of trawling is considered as of high impact. The stock management measures applied for pink shrimp are without effect regarding P. porosissimus. which has its spawning period before the closed season and its recruitment peak after it. The results show overfishing and the need to apply measures to reduce trawling action, such as adequate policies, introduction of selectivity devices and the creation of exclusion zones for trawl fishing.A pesca de arrasto para a captura do camarão-rosa (Fm:fantepenaeus brasi/iensis e F. paulensis captura grande quantidade de peixes considerados fauna acompanhante que são descartados por não possuírem valor comercial. Assim, pouco aparecem em trabalhos de biologia pesqueira com dados de desembarque, sendo a ação pesqueira sobre estas populações pouco conhecida. Neste estudo, um arrasto mensal de um barco de pesca foi desembarcado sem que nada do material capturado fosse descartado. Analisou-se Porichthys

  19. Cleaner shrimp use a rocking dance to advertise cleaning service to clients.

    Science.gov (United States)

    Becker, Justine H A; Curtis, Lynda M; Grutter, Alexandra S

    2005-04-26

    Signals transmit information to receivers about sender attributes, increase the fitness of both parties, and are selected for in cooperative interactions between species to reduce conflict [1, 2]. Marine cleaning interactions are known for stereotyped behaviors [3-6] that likely serve as signals. For example, "dancing" and "tactile dancing" in cleaner fish may serve to advertise cleaning services to client fish [7] and manipulate client behavior [8], respectively. Cleaner shrimp clean fish [9], yet are cryptic in comparison to cleaner fish. Signals, therefore, are likely essential for cleaner shrimp to attract clients. Here, we show that the yellow-beaked cleaner shrimp [10] Urocaridella sp. c [11] uses a stereotypical side-to-side movement, or "rocking dance," while approaching potential client fish in the water column. This dance was followed by a cleaning interaction with the client 100% of the time. Hungry cleaner shrimp, which are more willing to clean than satiated ones [12], spent more time rocking and in closer proximity to clients Cephalopholis cyanostigma than satiated ones, and when given a choice, clients preferred hungry, rocking shrimp. The rocking dance therefore influenced client behavior and, thus, appears to function as a signal to advertise the presence of cleaner shrimp to potential clients.

  20. Pink line syndrome (PLS) in the scleractinian coral Porites lutea

    Digital Repository Service at National Institute of Oceanography (India)

    Ravindran, J.; Raghukumar, C.

    Reef sites Pink line syndrome (PLS) in the scleractinian coral Porites lutea Accepted: 10 May 2002 / Published online: 5 July 2002 C211 Springer-Verlag 2002 We describe here an unreport- ed diseased state of Porites lutea (Milne-Edwards and Haime...)ontheKavarattireefof the Lakshadweep group of is- lands (11C176 N; 71C176E). Pink line syndrome (PLS) causes partial mortality of the coral P. lutea around Kavaratti Island (Fig. 1), and about 10% of colonies were found to be af- fected by PLS. The dead patches were colonized by a...

  1. The impacts of modern-use pesticides on shrimp aquaculture: An assessment for north eastern Australia.

    Science.gov (United States)

    Hook, Sharon E; Doan, Hai; Gonzago, Debra; Musson, Dean; Du, Jun; Kookana, Rai; Sellars, Melony J; Kumar, Anu

    2018-02-01

    The use of pyrethroid and neonicotinoid insecticides has increased in Australia over the last decade, and as a consequence, increased concentrations of the neonicotinoid insecticide imidacloprid have been measured in Australian rivers. Previous studies have shown that non-target crustaceans, including commercially important species, can be extremely sensitive to these pesticides. Most shrimp farms in Australia are predominantly located adjacent to estuaries so they can obtain their required saline water, which support multiple land uses upstream (e.g. sugar-cane farming, banana farming, beef cattle and urbanisation). Larval and post-larval shrimp may be most susceptible to the impacts of these pesticides because of their high surface area to volume ratio and rapid growth requirements. However, given the uncertainties in the levels of insecticides in farm intake water and regarding the impacts of insecticide exposure on shrimp larvae, the risks that the increased use of new classes of pesticide pose towards survival of post-larval phase shrimp cannot be adequately predicted. To assess the potential for risk, toxicity in 20day past hatch post-larval Black Tiger shrimp (Penaeus monodon) to modern use insecticides, imidacloprid, bifenthin, and fipronil was measured as decreased survival and feeding inhibition. Post-larval phase shrimp were sensitive to fipronil, bifenthrin, and imidacloprid, in that order, at concentrations that were comparable to those that cause mortality other crustaceans. Bifenthrin and imidacloprid exposure reduced the ability of post-larval shrimp to capture live prey at environmentally realistic concentrations. Concentrations of a broad suite of pesticides were also measured in shrimp farm intake waters. Some pesticides were detected in every sample. Most of the pesticides detected were measured below concentrations that are toxic to post-larval shrimp as used in this study, although pesticides exceed guideline values, suggesting the possibility

  2. Transmission of white spot syndrome virus in improved-extensive and semi-intensive shrimp production systems: A molecular epidemiology study

    NARCIS (Netherlands)

    Tuyet Hoa, T.T.; Zwart, M.P.; Phuong, N.T.; Vlak, J.M.; Jong, de M.C.M.

    2011-01-01

    Experimental evidence suggests that white spot syndrome virus (WSSV) can be transmitted horizontally through water, via carrier organisms and/or by cannibalism of infected shrimp, but also vertically through infected broodstock. However the mode(s) of WSSV transmission in shrimp farming systems and

  3. Biokinetics of 237Np in mussels and shrimp

    International Nuclear Information System (INIS)

    Guary, J.C.; Fowler, S.W.

    1977-01-01

    Neptunium-237 kinetics were studied in marine shrimp and mussels using a thick source alpha counting technique. Bioaccumulation of 237 Np from water was relatively slow in both species, reaching whole body concentration factors of only 15 to 20 after three months. Surface adsorption was implicated in the initial uptake. Both uptake and loss of the radioisotope were not significantly affected by temperature; this may be a reflection of the physical nature of the uptake. By virtue of the large amounts of accumulated 237 Np associated with the exoskeleton of shrimp, molting will play an important role in the biogeochemical cycling of this transuranic in the marine environment. Rapid growth of organisms like mussels acts to reduce the 237 Np concentration in tissues during a period of decontamination

  4. Drosophila pink1 is required for mitochondrial function and interacts genetically with parkin.

    Science.gov (United States)

    Clark, Ira E; Dodson, Mark W; Jiang, Changan; Cao, Joseph H; Huh, Jun R; Seol, Jae Hong; Yoo, Soon Ji; Hay, Bruce A; Guo, Ming

    2006-06-29

    Parkinson's disease is the second most common neurodegenerative disorder and is characterized by the degeneration of dopaminergic neurons in the substantia nigra. Mitochondrial dysfunction has been implicated as an important trigger for Parkinson's disease-like pathogenesis because exposure to environmental mitochondrial toxins leads to Parkinson's disease-like pathology. Recently, multiple genes mediating familial forms of Parkinson's disease have been identified, including PTEN-induced kinase 1 (PINK1; PARK6) and parkin (PARK2), which are also associated with sporadic forms of Parkinson's disease. PINK1 encodes a putative serine/threonine kinase with a mitochondrial targeting sequence. So far, no in vivo studies have been reported for pink1 in any model system. Here we show that removal of Drosophila PINK1 homologue (CG4523; hereafter called pink1) function results in male sterility, apoptotic muscle degeneration, defects in mitochondrial morphology and increased sensitivity to multiple stresses including oxidative stress. Pink1 localizes to mitochondria, and mitochondrial cristae are fragmented in pink1 mutants. Expression of human PINK1 in the Drosophila testes restores male fertility and normal mitochondrial morphology in a portion of pink1 mutants, demonstrating functional conservation between human and Drosophila Pink1. Loss of Drosophila parkin shows phenotypes similar to loss of pink1 function. Notably, overexpression of parkin rescues the male sterility and mitochondrial morphology defects of pink1 mutants, whereas double mutants removing both pink1 and parkin function show muscle phenotypes identical to those observed in either mutant alone. These observations suggest that pink1 and parkin function, at least in part, in the same pathway, with pink1 functioning upstream of parkin. The role of the pink1-parkin pathway in regulating mitochondrial function underscores the importance of mitochondrial dysfunction as a central mechanism of Parkinson's disease

  5. PELAKSANAAN KEGIATAN SPECIAL EVENT JAKARTA GOES PINK OLEH LOVEPINK INDONESIA

    Directory of Open Access Journals (Sweden)

    Nugroho Ajie Hartono

    2017-01-01

    Full Text Available ABSTRAKPenelitian ini bertujuan untuk mengetahui kegiatan special event yang dilakukan Lovepink Indonesiadalam menyelenggarakan Jakarta Goes Pink 2015 untuk meningkatkan kesadaran. Penelitian inimenggunakan Event Management Process Joe Goldblatt sebagai landasan konsep.Penelitian ini adalah penelitian kualitatif dengan pendekatan studi deskriptif. Teknik pengumpulan datadilakukan dengan wawancara mendalam, observasi partisipan pasif, dan studi kepustakaan, dengan teknik pengumpulan key informan purposive sampling. Teknik analisis data menggunakan tiga tahap yaitu reduksi data, penyajian data, serta penarikan kesimpulan. Teknik validitas data menggunakantriangulasi sumber data.Hasil penelitian ini mengemukakan bahwa manajemen special event Jakarta Goes Pink dikategorikandalam riset, desain, perencanaan, koordinasi, dan evaluasi. Riset yang dilakukan meliputi analisissituasi terkait kesadaran masyarakat Indonesia tentang kanker payudara, hasil riset menyatakanbahwa kesadaran masih rendah, terutama dibandingkan dengan aktivitas Pink Ribbon diluar negeridan evaluasi acara tahun sebelumnya. Desain acara dilakukan menggunakan unsur warna untukmemerahmudakan Jakarta, edukasi pengunjung terhadap kanker payudara, dan unsur hiburan dengankonsep fair and festival. Perencanaan Jakarta Goes Pink meliputi penentuan tujuan yang kemudiandapat menentukan tanggal dan lokasi, penetapan anggaran, pembagian tugas pengurus, dan publikasiyang dilakukan melalui media sosial dan bantuan mitra media. Koordinasi dilakukan sebagai upayapengelolaan komunikasi antara pihak eksternal seperti komunitas, relawan, sponsor, dan mitra media;serta pihak internal yaitu kepengurusan Jakarta Goes Pink. Tahap evaluasi yang dilakukan JakartaGoes Pink meliputi evaluasi acara, feedback langsung dari orang terdekat, dan penghitungan jumlahliputan media massa dan sifat pemberitaan.Kata kunci: Special event, kesadaran, organisasi, kanker payudara, event management process ABSTRACTThis study

  6. Ozone Technology for Pathogenic Bacteria of Shrimp (Vibrio sp.) Disinfection

    Science.gov (United States)

    Wulansarie, Ria; Dyah Pita Rengga, Wara; Rustamadji

    2018-03-01

    One of important marine commodities in Indonesia, shrimps are susceptible with Vibrio sp bacteria infection. That infection must be cleared. One of the technologies for disinfecting Vibrio sp. is ozone technology. In this research, Vibrio sp. is a pathogenic bacterium which infects Penaeus vannamei. Ozone technology is applied for threatening Vibrio sp. In this research, ozonation was performed in different pH. Those are neutral, acid (pH=4), and base (pH=9). The sample was water from shrimp embankment from Balai Besar Perikanan Budidaya Air Payau (BBPBAP) located in Jepara. That water was the habitat of Penaeus vannamei shrimp. The brand of ozonator used in this research was “AQUATIC”. The used ozonator in this research had 0,0325 g/hour concentration. The flow rate of sample used in this research was 2 L/minute. The ozonation process was performed in continuous system. A tank, pipe, pump, which was connected with microfilter, flowmeter and ozone generator were the main tools in this research. It used flowmeter and valve to set the flow rate scalable as desired. The first step was the insert of 5 L sample into the receptacle. Then, by using a pump, a sample supplied to the microfilter to be filtered and passed into the flow meter. The flow rate was set to 2 LPM. Furthermore, gas from ozonator passed to the flow for the disinfection of bacteria and then was recycled to the tank and the process run continuously. Samples of the results of ozonation were taken periodically from time 0, 3, 7, 12, 18, 24 to 30 minutes. The samples of the research were analyzed using Total Plate Count (TPC) test in BBPBAP Jepara to determine the number of Vibrio sp. bacteria. The result of this research was the optimal condition for pathogenic bacteria of shrimp (Vibrio sp.) ozonation was in neutral condition.

  7. Adherence And Pathogenicity Assay Of Vibrio Harveyi In Tiger Shrimp (Penaeus Monodon) Larvae For Screening Biocontrol Agent

    OpenAIRE

    SUWANTO, ANTONIUS; HALA, YUSMINAH; AFFANDI, RIDWAN; Jr., MUHAMMAD ZAIRIN

    2002-01-01

    Rifampicin-resistant marker was employed as a reporter to detect the adherence and colonization of V. harveyi in shrimp larvae. Vibrio harveyi P1B and YA32.2 were isolated from dead shrimp larvae in Besuki, Northern Coast of East Java, while V. harveyi HB3, was isolated from pristine sea water in Pacitan, Southern Coast of East Java. Vibrio metschnikovii used as biocontrol agent was isolated from healthy shrimp larvae in Serang, West Java. Spontaneous mutation was conducted to generate V. h...

  8. The Color Pink Is Bad for Fighting Breast Cancer

    NARCIS (Netherlands)

    S. Puntoni (Stefano)

    2011-01-01

    textabstractThe article presents an interview with researcher Stefano Puntoni, who conducted experiments indicating that the color pink makes women think they have a reduced susceptibility to getting cancer, and also disinclines them toward donating to cancer research. Topics discussed include why

  9. Sample sufficiency of chinese pink grown in different substrates

    Directory of Open Access Journals (Sweden)

    Sidinei José lopes

    2016-04-01

    Full Text Available The cravina is an excellent plant to build up gardens due to its early flowering, abundant flowering and great performance in spring and autumn. The objective was to estimate the sample size for plant chinese pink, grown on different substrates, and check the variability of the sample size between growth parameters and production and substrates. They used seven treatments (substrates: S1 = 50% soil + 50% rice husk ash; S2 = 80% soil + 20% earthworm castings; S3 = 80% rice husk ash + 20% earthworm castings; S4 = 40% soil + 40% rice husk ash + 20% earthworm castings; S5 = 100% peat; S6 = 100% commercial substrate Mecplant®; S7 = 50% peat + 50% rice husk ash, with 56 repetitions each, totaling 392 plants of garden pink, which was evaluated in 17 of growth and production parameters. The methodology used to bootstrap resampling, with replacement, for each character within each substrate with predetermined error: 5, 10, 20 and 40% of the average (D%. To a 95% confidence interval, with D = 20%, the substrate 50% soil and 50% of rice husk ash had the largest sample size 11 characters; when comparing the characters , the number of flower buds had the highest sample size on average 113 plants. Using samples of 44 plant chinese pink for commercial substrate Mecplant® meet the lower precisions or equal to 20% for all variables. There is variation in sample size in relation to the substrate used and the variable evaluated in chinese pink plants.

  10. Lavaka lõpetajate pink on pikk / Tiiu Laks

    Index Scriptorium Estoniae

    Laks, Tiiu, 1984-

    2009-01-01

    Kevadel lavakunstikooli lõpetavate tudengite lavastusest "Pikk pink" , mis koosneb kuuest lühiloost - Mait Jooritsa "Kantani padi", Kristjan Üksküla "Jääger" ja "Albioni tütar", Roland Laosi "Genees ja katastroof", Hendrik Toompere jun. jun. "Karupoeg Puhh" ja Kerttu Moppeli " Leib!". Etendused toimuvad Hobuveskis

  11. Pink läks pikemaks... / Margit Tõnson

    Index Scriptorium Estoniae

    Tõnson, Margit, 1978-

    2007-01-01

    20. sept. VAT Teatris esietendunud Eesti Muusika ja Teatriakadeemia Lavakunstikooli lavastajate õppesuuna tudengite koolitööst "Pink", mis koosneb kahest iseseisvast loost - Jon Fosse "Talv", lavastaja Robert Annus ja Edward Albee "Loomaaialugu", lavastaja Uku Uusberg. Lisaks küsimus "Aare Toikka, kuidas noored lavastajatudengid VAT Teatri tiiva alla sattusid?"

  12. BST-PINK PANTHER. An intelligent CAMAC crate controller

    International Nuclear Information System (INIS)

    Troester, D.A.

    1984-01-01

    A technical and functional description of the PINK system for intelligent, distributed data acquisition, data formatting, and data reduction is presented. The system has been developed to bypass some of the constraints of CAMAC when collecting data with the high-resolution π 0 spectrometers of the Basel-Stockholm-Thessaloniki (BST) Collaboration at CERN. (orig.)

  13. Detection of ctx gene positive non-O1/non-O139 V. cholerae in shrimp aquaculture environments.

    Science.gov (United States)

    Madhusudana, Rao B; Surendran, P K

    2013-06-01

    Water and post-larvae samples from black tiger (Penaeus monodon) shrimp hatcheries; pond water, pond sediment and shrimp from aquaculture farms were screened for the presence of V. cholerae. A V. cholerae-duplex PCR method was developed by utilizing V. cholerae species specific sodB primers and ctxAB genes specific primers. Incidence of V. cholerae was not observed in shrimp hatchery samples but was noticed in aquaculture samples. The incidence of V. cholerae was higher in pond water (7.6%) than in pond sediment (5.2%). Shrimp head (3.6%) portion had relatively higher incidence than shrimp muscle (1.6%). All the V. cholerae isolates (n = 42) belonged to non-O1/non-O139 serogroup, of which 7% of the V. cholerae isolates were potentially cholera-toxigenic (ctx positive). All the ctx positive V. cholerae (n = 3) were isolated from the pond water. Since, cholera toxin (CT) is the major contributing factor for cholera gravis, it is proposed that the mere presence of non-O1/non-O139 V. cholerae need not be the biohazard criterion in cultured black tiger shrimp but only the presence of ctx carrying non-O1/non-O139 V. cholerae may be considered as potential public health risk.

  14. Comparison of the acute toxicity for gamma-cyhalothrin and lambda-cyhalothrin to zebra fish and shrimp.

    Science.gov (United States)

    Wang, Wei; Cai, D J; Shan, Z J; Chen, W L; Poletika, Nick; Gao, X W

    2007-03-01

    Gamma-cyhalothrin 15CS (GCH) contains only the active stereoisomer of the two isomers found in lambda-cyhalothrin 25EW (LCH). GCH (0.5 x rate) provides equivalent overall insect control as LCH (1 x rate). Both formulations showed high acute toxicity to zebra fish (Brachydanio rerio H.B.) and shrimp (Macrobrachium nippoensis de Haan). The 96-h LC(50(zebra fish,GCH)) is 1.93 microg a.i/L and LC(50(zebra fish,LCH)) is 1.94 microg a.i/L. LC(50(shrimp,GCH)) is 0.28 microg a.i./L and LC(50(shrimp,LCH)) 0.04 microg a.i./L. This indicates that the toxicity to shrimp is likely stereochemistry-dependent. The fates of GCH and LCH are similar in laboratory simulated rice paddy water and their concentrations decrease rapidly, with no GCH or LCH detected after 3 or 4 days. Both are toxic to shrimp in a simulated paddy irrigation reservoir even though treated return water is diluted 5 times. No shrimp fatality is shown in the GCH-treated paddy water after a 4-day holding period, and longer than 5 days is necessary to reach a zero fatality rate for LCH. This is compatible with the 7-day water holding period considered reasonable in agricultural practice.

  15. Complex burrows of the mud shrimp Callianassa truncata and their geochemical impact in the sea bed

    DEFF Research Database (Denmark)

    Ziebis, W.; Forster, S.; Huettel, M.

    1996-01-01

    the overlying water and rapid consumption within the sea bed, Macrofauna organisms living within the sea bed affect the physical structure of the sea floor, its chemical zonations and the exchange processes across the sediment-water interface(3,4). Thalassinidean mud-shrimps are often abundant in tropical......). Here we report the use of a diver observatory within the seabed, along with in situ measurements, to assess the geochemical impact of the mud-shrimp Callianassa truncata Giard and Bonnier (Decapoda, Thalassinidea), a species that commonly inhabits sandy sediments in the Mediterranean sea....

  16. Effects of ergothioneine from mushrooms (Flammulina velutipes) on melanosis and lipid oxidation of kuruma shrimp (Marsupenaeus japonicus).

    Science.gov (United States)

    Encarnacion, Angel B; Fagutao, Fernand; Hirono, Ikuo; Ushio, Hideki; Ohshima, Toshiaki

    2010-02-24

    The antimelanosic and antioxidative properties of a hot water extract prepared from the fruiting body of the edible mushroom (Flammulina velutipes) were evaluated by dietary supplementation in Kuruma shrimp (Marsupenaeus japonicus) for possible aquaculture application. The extract contained ergothioneine (ERT) at a level of 2.05 mg/mL. A commercial standard of l-ergothioneine (l-ERT) and the mushroom extract showed inhibitory activity against mushroom polyphenoloxidase (PPO). Feeding of the extract had no adverse effects on the immune systems of the shrimp under the present experimental conditions. Supplementation of the extract in the diet significantly suppressed PPO activities in the hemolymphs of the shrimp. Expression of the prophenoloxidase (proPO) gene decreased in the hemocyte of the Kuruma shrimp fed with the mushroom extract. Consequently, development of melanosis was significantly suppressed in the supplement fed shrimp during ice storage. Lipid oxidation was also effectively controlled in the supplement fed group throughout the storage period. In vitro experiments showed that l-ERT effectively inhibited the activation of proPO in the hemocyte lysate supernatant (HLS). The transcript of the proPO gene in the hemocyte showed lower expression in the l-ERT-treated HLS. It was concluded that dietary supplementation of the mushroom extract in shrimp could be a promising approach to control post mortem development of melanosis and lipid oxidation in shrimp muscles.

  17. Numerical study of hydrodynamic and salinity transport processes in the Pink Beach wetlands of the Liao River estuary, China

    Directory of Open Access Journals (Sweden)

    H. Qiao

    2018-06-01

    Full Text Available Interaction studies of vegetation within flow environments are essential for the determination of bank protection, morphological characteristics and ecological conditions for wetlands. This paper uses the MIKE 21 hydrodynamic and salinity model to simulate the hydrodynamic characteristics and salinity transport processes in the Pink Beach wetlands of the Liao River estuary. The effect of wetland plants on tidal flow in wetland areas is represented by a varying Manning coefficient in the bottom friction term. Acquisition of the vegetation distribution is based on Landsat TM satellites by remote sensing techniques. Detailed comparisons between field observation and simulated results of water depth, salinity and tidal currents are presented in the vegetated domain of the Pink Beach wetlands. Satisfactory results were obtained from simulations of both flow characteristics and salinity concentration, with or without vegetation. A numerical experiment was conducted based on variations in vegetation density, and compared with the tidal currents in non-vegetated areas; the computed current speed decreased remarkably with an increase in vegetation density. The impact of vegetation on water depth and salinity was simulated, and the findings revealed that wetland vegetation has an insignificant effect on the water depth and salinity in this wetland domain. Several stations (from upstream to downstream in the Pink Beach wetlands were selected to estimate the longitudinal variation of salinity under different river runoff conditions; the results showed that salinity concentration decreases with an increase in river runoff. This study can consequently help increase the understanding of favourable salinity conditions for particular vegetation growth in the Pink Beach wetlands of the Liao River estuary. The results also provide crucial guidance for related interaction studies of vegetation, flow and salinity in other wetland systems.

  18. Shrimp pond wastewater treatment using pyrolyzed chicken feather as adsorbent

    Science.gov (United States)

    Moon, Wei Chek; Jbara, Mohamad Hasan; Palaniandy, Puganeshwary; Yusoff, Mohd Suffian

    2017-10-01

    In this study, chicken feather fiber was used as a raw material to prepare a non-expensive adsorbent by pyrolysis without chemical activation. The main pollutants treated in this study were chemical oxygen demand (COD) and ammoniacal nitrogen (NH3-N) from shrimp pond wastewater containing high concentrations of nutrients, which caused the eutrophication phenomenon in adjacent water. Batch adsorption studies were performed to investigate the effect of pH (5-8), mass of adsorbent (0.5-3 g), and shaking time (0.5-2 h) on the removal efficiency of COD and NH3- N. Experimental results showed that the optimum conditions were as follows: pH 5, 0.5 g of adsorbent, and 0.5 h of shaking. Under these conditions, 34.01% and 40.47% of COD and NH3-N were removed, respectively, from shrimp pond wastewater. The adsorption processes were best described by the Langmuir isotherm model for COD and NH3-N removal, with maximum monolayer adsorption capacity of 36.9 and 7.24 mg/g for COD and NH3-N, respectively. The results proved that chicken feather could remove COD and NH3-N from shrimp pond wastewater. However, further studies on thermal treatment should be carried out to increase the removal efficiency of pyrolyzed chicken feather fiber.

  19. Conservation by irradiation of the blanched and cooled shrimps

    International Nuclear Information System (INIS)

    Rouissi Tarek

    2004-01-01

    In this work, we studied the gamma radiation influence on the initial reduction of contaminated germs and on physicochemical characteristics of shrimps storage and cooled at 21 days. These doses of 1.5; 2.5 and 3. 5 KGy proved insufficient to reduce in a significant way the initial rate of contamination mesophiles,, halophilous and psychrotrophes germs. 3.5 KGy was the most effectiveness. The contamination focal germs miss in the control samples. The toxinfections germs miss completely in all samples. In addition to the pH, the nitrogen basic volatile total and trimethylamine quantity increased during the cooled storage of shrimps. The capacity of water retention decreased indifferently by the doses applied. The irradiation made it possible to lengthen the shelf life of shrimps from 10 and 6 days respectively for 3,5 and 2,5 KGy. Finally, the irradiation doses did not affect neither the loss of weight during cooking neither the variations of pH at the end of dry and wet cooking.(author)

  20. S-Nitrosylation of PINK1 Attenuates PINK1/Parkin-Dependent Mitophagy in hiPSC-Based Parkinson’s Disease Models

    Directory of Open Access Journals (Sweden)

    Chang-Ki Oh

    2017-11-01

    Full Text Available Mutations in PARK6 (PINK1 and PARK2 (Parkin are linked to rare familial cases of Parkinson’s disease (PD. Mutations in these genes result in pathological dysregulation of mitophagy, contributing to neurodegeneration. Here, we report that environmental factors causing a specific posttranslational modification on PINK1 can mimic these genetic mutations. We describe a molecular mechanism for impairment of mitophagy via formation of S-nitrosylated PINK1 (SNO-PINK1. Mitochondrial insults simulating age- or environmental-related stress lead to increased SNO-PINK1, inhibiting its kinase activity. SNO-PINK1 decreases Parkin translocation to mitochondrial membranes, disrupting mitophagy in cell lines and human-iPSC-derived neurons. We find levels of SNO-PINK1 in brains of α-synuclein transgenic PD mice similar to those in cell-based models, indicating the pathophysiological relevance of our findings. Importantly, SNO-PINK1-mediated deficits in mitophagy contribute to neuronal cell death. These results reveal a direct molecular link between nitrosative stress, SNO-PINK1 formation, and mitophagic dysfunction that contributes to the pathogenesis of PD.

  1. The effect of gamma irradiation and frozen storage time on the quality of tiger shrimps (Penaeus Monodon)

    International Nuclear Information System (INIS)

    Mohamad Khan Ayob; Azizah Ali; Jalil Kadir

    1986-01-01

    The effect of gamma irradiation (0, 1, 2, 4 and kGy) and frozen storage (-10 0 C) of 6 months on the microbiological, chemical and organoleptic qualities of whole (WSI) and peeled (PS2) tiger shrimps (Peneaus monodon) were studied. The qualities of the products were compared with blanched shrimps (PSI) ordinarily prepared at a factory. The irradiation dose up to 6 kGy reduced the total bacterial count (TBC) by at least 3 log cycles with D value = 2.13 kGy. The survival of pathogenic microbes was effectively retarded. Although blanching eliminated the pathogenic microbes, the TBC of PSI before storage is still in a range of 10 5 /g. There was an increase in TBC of 1-2 log cycles during storage in all samples. Peeling effectively reduced the TBC of the shrimps. Gamma irradiation and shorter period of storage time did not influence the pH and protein contents of the products. Indole production was slowed down by irradiation at 1-4 kGy, which is comparable to blanching treatment. Organoleptic qualities (colour, ordour and texture) of the products were not effected by irradiation and storage time except for samples irradiated at 6 kGy in which the pink colour faded. There was no significant difference in the organoleptic qualities of irradiated (2 kGy) samples as compared to blanched products. (author)

  2. Probiotics as Antiviral Agents in Shrimp Aquaculture

    Directory of Open Access Journals (Sweden)

    Bestha Lakshmi

    2013-01-01

    Full Text Available Shrimp farming is an aquaculture business for the cultivation of marine shrimps or prawns for human consumption and is now considered as a major economic and food production sector as it is an increasingly important source of protein available for human consumption. Intensification of shrimp farming had led to the development of a number of diseases, which resulted in the excessive use of antimicrobial agents, which is finally responsible for many adverse effects. Currently, probiotics are chosen as the best alternatives to these antimicrobial agents and they act as natural immune enhancers, which provoke the disease resistance in shrimp farm. Viral diseases stand as the major constraint causing an enormous loss in the production in shrimp farms. Probiotics besides being beneficial bacteria also possess antiviral activity. Exploitation of these probiotics in treatment and prevention of viral diseases in shrimp aquaculture is a novel and efficient method. This review discusses the benefits of probiotics and their criteria for selection in shrimp aquaculture and their role in immune power enhancement towards viral diseases.

  3. Cationic antimicrobial peptides in penaeid shrimp.

    Science.gov (United States)

    Tassanakajon, Anchalee; Amparyup, Piti; Somboonwiwat, Kunlaya; Supungul, Premruethai

    2011-08-01

    Penaeid shrimp aquaculture has been consistently affected worldwide by devastating diseases that cause a severe loss in production. To fight a variety of harmful microbes in the surrounding environment, particularly at high densities (of which intensive farming represents an extreme example), shrimps have evolved and use a diverse array of antimicrobial peptides (AMPs) as part of an important first-line response of the host defense system. Cationic AMPs in penaeid shrimps composed of penaeidins, crustins, and anti-lipopolysaccharide factors are comprised of multiple classes or isoforms and possess antibacterial and antifungal activities against different strains of bacteria and fungi. Shrimp AMPs are primarily expressed in circulating hemocytes, which is the main site of the immune response, and hemocytes expressing AMPs probably migrate to infection sites to fight against pathogen invasion. Indeed, most AMPs are produced as early as the nauplii developmental stage to protect shrimp larvae from infections. In this review, we discuss the sequence diversity, expression, gene structure, and antimicrobial activities of cationic AMPs in penaeid shrimps. The information available on antimicrobial activities indicates that these shrimp AMPs have potential therapeutic applications in the control of disease problems in aquaculture.

  4. The known two types of transglutaminases regulate immune and stress responses in white shrimp, Litopenaeus vannamei.

    Science.gov (United States)

    Chang, Chin-Chyuan; Chang, Hao-Che; Liu, Kuan-Fu; Cheng, Winton

    2016-06-01

    Transglutaminases (TGs) play critical roles in blood coagulation, immune responses, and other biochemical functions, which undergo post-translational remodeling such as acetylation, phosphorylation and fatty acylation. Two types of TG have been identified in white shrimp, Litopenaeus vannamei, and further investigation on their potential function was conducted by gene silencing in the present study. Total haemocyte count (THC), differential haemocyte count (DHC), phenoloxidase activity, respiratory bursts (release of superoxide anion), superoxide dismutase activity, transglutaminase (TG) activity, haemolymph clotting time, and phagocytic activity and clearance efficiency to the pathogen Vibrio alginolyticus were measured when shrimps were individually injected with diethyl pyrocarbonate-water (DEPC-H2O) or TG dsRNAs. In addition, haemolymph glucose and lactate, and haemocytes crustin, lysozyme, crustacean hyperglycemic hormone (CHH), transglutaminaseI (TGI), transglutaminaseII (TGII) and clotting protein (CP) mRNA expression were determined in the dsRNA injected shrimp under hypothermal stress. Results showed that TG activity, phagocytic activity and clearance efficiency were significantly decreased, but THC, hyaline cells (HCs) and haemolymph clotting time were significantly increased in the shrimp which received LvTGI dsRNA and LvTGI + LvTGII dsRNA after 3 days. However, respiratory burst per haemocyte was significantly decreased in only LvTGI + LvTGII silenced shrimp. In hypothermal stress studies, elevation of haemolymph glucose and lactate was observed in all treated groups, and were advanced in LvTGI and LvTGI + LvTGII silenced shrimp following exposure to 22 °C. LvCHH mRNA expression was significantly up-regulated, but crustin and lysozyme mRNA expressions were significantly down-regulated in LvTGI and LvTGI + LvTGII silenced shrimp; moreover, LvTGII was significantly increased, but LvTGI was significantly decreased in LvTGI silenced shrimp

  5. A field survey of chemicals and biological products used in shrimp farming

    International Nuclear Information System (INIS)

    Graeslund, S.; Holmstroem, K.; Wahlstroem, A.

    2003-01-01

    This study documented the use of chemicals and biological products in marine and brackish water shrimp farming in Thailand, the world's top producer of farmed shrimp. Interviews were conducted with 76 shrimp farmers in three major shrimp producing regions, the eastern Gulf coast, the southern Gulf coast and the Andaman coast area. Farmers in the study used on average 13 different chemicals and biological products. The most commonly used products were soil and water treatment products, pesticides and disinfectants. Farmers in the southern Gulf coast area used a larger number of products than farmers in the other two areas. In the study, the use of more than 290 different chemicals and biological products was documented. Many of the pesticides, disinfectants and antibiotics used by the farmers could have negative effects on the cultured shrimps, cause a risk for food safety, occupational health, and/or have negative effects on adjacent ecosystems. Manufacturers and retailers of the products often neglected to provide farmers with necessary information regarding active ingredient and relevant instructions for safe and efficient use

  6. Replacement of fish meal by protein soybean concentrate in practical diets for Pacific white shrimp

    Directory of Open Access Journals (Sweden)

    Mariana Soares

    2015-10-01

    Full Text Available ABSTRACTThe objective of this work was to evaluate the performance of Litopenaeus vannameifed different levels (0, 25, 50, 75, and 100% of soybean protein concentrate (63.07% crude protein, CP to replace fish meal-by product (61.24% CP. The study was conducted in clear water in fifteen 800 L tanks equipped with aeration systems, constant heating (29 ºC, and daily water exchange (30%. Each tank was stocked with 37.5 shrimp/m3 (3.03±0.14 g. Feed was supplied four times a day, at 6% of the initial biomass, adjusted daily. After 42 days, the weight gain of shrimp fed diets with 0 and 25% protein replacement was higher than that observed in shrimp fed 100% replacement, and there were no differences among those fed the other diets. Feed efficiency and survival did not differ among shrimp fed different protein replacements. There was a negative linear trend for growth parameters and feed intake as protein replacement with soybean protein concentrate increased. Fish meal by-product can be replaced by up to 75% of soybean protein concentrate, with no harm to the growth of Pacific white shrimp.

  7. Selectivity of commercial, larger mesh and square mesh trawl codends for deep water rose shrimp Parapenaeus longirostris (Lucas, 1846 in the Aegean Sea

    Directory of Open Access Journals (Sweden)

    Hakan Kaykaç

    2009-09-01

    Full Text Available We investigated the differences between size selectivity of a commercial codend (40 mm diamond mesh – 40D, a larger mesh codend (48 mm diamond mesh – 48D, and a square mesh codend (40 mm square mesh – 40S for Parapenaeus longirostris in international waters of the Aegean Sea. Selectivity data were collected by using a covered codend method and analysed taking between-haul variation into account. The results indicate significant increases in L50 values in relation to an increase in mesh size and when the square mesh is used in the commercial trawl codend. The results demonstrate that the commercially used codend (40D is not selective enough for P. longirostris in terms of length at first maturity. Changing from a 40D to a 48D codend significantly improves selection, with an increase of about 15% in the L50 values (carapace length 14.5 mm for 40D and 16.6 mm for 48D. Similarly, 40 mm square mesh, which has recently been legislated for EU Mediterranean waters, showed a 12.4% higher mean L50 value (16.3 mm than 40 mm diamond mesh for this species. However, despite these improvements, the 48D and 40S codends still need further improvements to obtain higher selectivity closer to the length at first maturity (20 mm carapace length.

  8. Exposure of the grass shrimp, Palaemonetes pugio, to antimicrobial compounds affects associated Vibrio bacterial density and development of antibiotic resistance.

    Science.gov (United States)

    DeLorenzo, M E; Brooker, J; Chung, K W; Kelly, M; Martinez, J; Moore, J G; Thomas, M

    2016-04-01

    Antimicrobial compounds are widespread, emerging contaminants in the aquatic environment and may threaten ecosystem and human health. This study characterized effects of antimicrobial compounds common to human and veterinary medicine, aquaculture, and consumer personal care products [erythromycin (ERY), sulfamethoxazole (SMX), oxytetracycline (OTC), and triclosan (TCS)] in the grass shrimp Palaemonetes pugio. The effects of antimicrobial treatments on grass shrimp mortality and lipid peroxidation activity were measured. The effects of antimicrobial treatments on the bacterial community of the shrimp were then assessed by measuring Vibrio density and testing bacterial isolates for antibiotic resistance. TCS (0.33 mg/L) increased shrimp mortality by 37% and increased lipid peroxidation activity by 63%. A mixture of 0.33 mg/L TCS and 60 mg/L SMX caused a 47% increase in shrimp mortality and an 88% increase in lipid peroxidation activity. Exposure to SMX (30 mg/L or 60 mg/L) alone and to a mixture of SMX/ERY/OTC did not significantly affect shrimp survival or lipid peroxidation activity. Shrimp exposure to 0.33 mg/L TCS increased Vibrio density 350% as compared to the control whereas SMX, the SMX/TCS mixture, and the mixture of SMX/ERY/OTC decreased Vibrio density 78-94%. Increased Vibrio antibiotic resistance was observed for all shrimp antimicrobial treatments except for the mixture of SMX/ERY/OTC. Approximately 87% of grass shrimp Vibrio isolates displayed resistance to TCS in the control treatment suggesting a high level of TCS resistance in environmental Vibrio populations. The presence of TCS in coastal waters may preferentially increase the resistance and abundance of pathogenic bacteria. These results indicate the need for further study into the potential interactions between antimicrobials, aquatic organisms, and associated bacterial communities. © 2014 Wiley Periodicals, Inc.

  9. The yeast complex I equivalent NADH dehydrogenase rescues pink1 mutants.

    Directory of Open Access Journals (Sweden)

    Sven Vilain

    2012-01-01

    Full Text Available Pink1 is a mitochondrial kinase involved in Parkinson's disease, and loss of Pink1 function affects mitochondrial morphology via a pathway involving Parkin and components of the mitochondrial remodeling machinery. Pink1 loss also affects the enzymatic activity of isolated Complex I of the electron transport chain (ETC; however, the primary defect in pink1 mutants is unclear. We tested the hypothesis that ETC deficiency is upstream of other pink1-associated phenotypes. We expressed Saccaromyces cerevisiae Ndi1p, an enzyme that bypasses ETC Complex I, or sea squirt Ciona intestinalis AOX, an enzyme that bypasses ETC Complex III and IV, in pink1 mutant Drosophila and find that expression of Ndi1p, but not of AOX, rescues pink1-associated defects. Likewise, loss of function of subunits that encode for Complex I-associated proteins displays many of the pink1-associated phenotypes, and these defects are rescued by Ndi1p expression. Conversely, expression of Ndi1p fails to rescue any of the parkin mutant phenotypes. Additionally, unlike pink1 mutants, fly parkin mutants do not show reduced enzymatic activity of Complex I, indicating that Ndi1p acts downstream or parallel to Pink1, but upstream or independent of Parkin. Furthermore, while increasing mitochondrial fission or decreasing mitochondrial fusion rescues mitochondrial morphological defects in pink1 mutants, these manipulations fail to significantly rescue the reduced enzymatic activity of Complex I, indicating that functional defects observed at the level of Complex I enzymatic activity in pink1 mutant mitochondria do not arise from morphological defects. Our data indicate a central role for Complex I dysfunction in pink1-associated defects, and our genetic analyses with heterologous ETC enzymes suggest that Ndi1p-dependent NADH dehydrogenase activity largely acts downstream of, or in parallel to, Pink1 but upstream of Parkin and mitochondrial remodeling.

  10. Use practices of antimicrobials and other compounds by shrimp and fish farmers in Northern Vietnam

    Directory of Open Access Journals (Sweden)

    Tran Thi Kim Chi

    2017-08-01

    Full Text Available Aquaculture production is increasing in Vietnam, but is hampered by frequent disease outbreaks and widespread use of various compounds used to treat the fish and shrimp. The objective of this study was to analyse factors influencing farmer use practices of antimicrobials and other compounds by a questionnaire and observational survey conducted with 60 whiteleg shrimp (Litopenaeus vannamei and 25 fish farmers in three coastal provinces in Northern Vietnam. Personnel in 22 shops distributing feed and chemicals for aquaculture were interviewed about their advice on sale to the farmers. Results showed that 20 different antimicrobial products were used for disease prevention and treatment in shrimp and marine fish culture. Banned products used included chloramphenicol, enrofloxacin and malachite green. Cage fish farmers said they purchased antimicrobial tablets readily available at a local pharmacy and sold for human use. Chinese traders were the main drug suppliers to the shrimp farmers in Quang Ninh and others provinces. Their products were sold with labels and product information written in Chinese only. Farmers appeared to have little awareness and concern about the disease aetiology when applying specific antimicrobials. Up to 50% of the shrimp farmers used up to 20 different disinfectants, e.g. chlorine-based compounds, to disinfect water in storage ponds, often without knowledge of the type of disinfectants and their mode of action. A variety of probiotics, vitamins, minerals and herbal extracts were routinely used by mainly shrimp farmers to enhance shrimp immunity. There is an urgent need to provide aquaculture farmers access to diagnostic and independent disease control advisory services and quality medicated feed, since the current indiscriminate use of antimicrobials and other compounds are inefficient, costly, and hazardous to the aquatic animal and farmer’s health, the environment and food safety.

  11. Culture of white shrimp (Litopenaeus vannamei Boone, 1931 with zero water exchange and no food addition: an eco-friendly approach Cultivo de camarón blanco (Litopenaeus vannamei Boone, 1931 sin recambio de agua y sin adición de alimento formulado: un sistema amigable con el ambiente

    Directory of Open Access Journals (Sweden)

    Juan Manuel Audelo-Naranjo

    2012-07-01

    Full Text Available Juveniles (3.5 ± 0.3 g of the white shrimp Litopenaeus vannamei were grown during 40 days with no water exchanges, no food addition and four initial densities (25, 50, 75 and 100 g m-3, corresponding to between 8 and 32 shrimp m-2, to determine growth rates, which could be achieved using the periphyton growing on artificial substrates as the only food source. The experimental culture units were 12 polyethylene 1 m³ cylindrical tanks with 4.8 m² of total submerged surface (bottom and walls, provided with 7.2 m² of artificial substrate (Aquamats™. There were no significant differences in the ammonia and nitrite concentrations determined in the four treatments (0.17-0.19 and 0.10-0.11 mg L-1, respectively, which remained below the respective levels of concern for shrimp cultures. Mean survival was similar, and ranged from close to 91 to 97%, whereas there were significant differences in mean individual weight, which ranged from 11.9-10.6 g shrimp-1 for the two low initial densities (25 y 50 g m-3, to 8.3-7.7 g shrimp-1 for the other treatments. However, because of the high survival and of the higher initial density, the best biomass yield was with 100 g m-3. The final nitrogen contents of sediment and water were lower than the initial values, and between 36 and 60% of the difference was converted into shrimp biomass.Durante 40 días se cultivaron juveniles de camarón blanco Litopenaeus vannamei con un peso individual de 3,5 ± 0,3 g y biomasas iniciales de 25, 50, 75 y 100 g m-3 (equivalente a 8-32 ind m-2, sin cambios de agua y adición de alimento, para determinar la tasa de crecimiento usando como única fuente de alimentación el perifiton desarrollado en sustratos artificiales. Se utilizaron estanques cilíndricos de polietileno de 1 m³ con tres réplicas por tratamiento, con una superficie de 4,8 m² (paredes y fondo y 7,1 m² de sustrato artificial (Aquamats™. No se encontraron diferencias significativas entre las concentraciones

  12. PERFORMANCE OF CULTURED White-leg Shrimp IN RICA Probiotic Application METHOD in PONDS AERATED WITH SUPERCHARGE BLOWER

    Directory of Open Access Journals (Sweden)

    Endang Susianingsih

    2017-09-01

    Full Text Available Several ways have been done to encounter shrimp disease affecting cultured shrimp in Indonesian ponds in the last two decades. This research was aimed to find out the effect of different application of probiotic RICA4, RICA5, and RICA3 method on survival rate and production of white-leg shrimp (Litopenaeus vannamei cultured in ponds aerated with supercharge blower. RICA probiotics are bacteria probiotics produced by the Research and Development Institute for Coastal Aquaculture, originally isolated from seaweed and sea sediment. This experiment was carried out in completely randomized design using nine 250-m2 experimental ponds stocked with 15 shrimp fries/m2. There were three treatments namely: A=alternate use of three probiotics RICA4, RICA5, and RICA3; B=combination use of three probiotics RICA4, RICA5, and RICA3; and C=control (without probiotic, each treatment with three replications and cultured with supercharge blower. Variables observed in this study were survival rate and production of the shrimp calculated at the end of experiment, total vibrio count (TBV and total plate count of common bacteria (TPC of the pond waters and sediments monitored every two weeks. The results showed that application of probiotic RICA4, RICA5, and RICA3 applied either in alteration or in combination significantly increased survival rate (P0.05 of the white-leg shrimp. TBV/TPC ratio in the control pond waters after 10-weeks culture (over than 10% was relatively dangerous for the cultured white-leg shrimp. This shows that application of probiotic could prevent the growth of Vibrio spp in the cultured shrimp pond water.

  13. The search for a filter-feeding alternative for integrated shrimp aquacultures– a preliminary study with the polychaete Sabella spallanzanii for water quality improvement

    Directory of Open Access Journals (Sweden)

    Luana Granada

    2014-06-01

    Relatively to bacteriological analysis, the density of heterotrophic bacteria at 37ºC decreased substantially (Fig. 1a. The abundance of heterotrophic bacteria at 22ºC increased from T0 to T3 (Fig. 1b. This increasing density pattern of heterotrophic bacteria at 22ºC is in accordance with Stabili et al. (2010. The author stated that could be related with the effect of temperature, assessed by Pomeroy & Wiebe (2001. However, in this study no large temperature changes occur. Thus, more intensive bacteriological analyses should be done before performing any assumptions. Regarding culturable presumptive vibrios, the abundance decreased from T0 to T3 at 22 and 35ºC (Fig. 2. Regarding to E.coli, it was possible to observe a density decrease of 90% at the end of the experiment (Fig. 3. According with the decree-law n.º 236/98 of August 1st (N.º 176 – 1998, the maximum value allowable for faecal coliforms is 2000 per 100 mL, and the maximum value recommended is 100 per 100 mL. The results for E. coli stated previously are in accordance with the decree-law requirements. The use of S. spallanzanii as bioremediator of microbial pollution revealed to be efficient in a more complex culture system. The integration of this species in the culture system plays an important role since it is able to filter, accumulate and remove several bacterial groups from the water, including human potential pathogens, and thus, reduces susceptibility to disease outbreaks.

  14. The effects of the MEGA BORG spill on Gulf of Mexico shrimp

    International Nuclear Information System (INIS)

    Nance, J.

    1993-01-01

    A brown shrimp stock model was developed at the NMFS Galveston Laboratory to assess the effects of the MEGA BORG oil spill on the brown shrimp population along the Texas coast. Water and sediment samples from near the MEGA BORG spill area were collected and analyzed by the Geochemical and Environmental Research Group at Texas A ampersand M University. Hydrocarbon concentrations found at the sediment collection stations ranged from 1.38 ug/g to 7.42 ug/g, while concentrations at the water column sampling sites ranged from 0.69 ug/l to 27.39 ug/l. Evaluation of chromatograms and analytical data suggested that sediments from the area contained primarily biogenic hydrocarbons. Only one station had elevated hydrocarbon levels. However, these values were only three to five times higher than the concentrations measured at the other stations. Evaluation of the water samples from the area showed only very low concentration levels of hydrocarbons were present in the water column. A bioassay study was conducted by the US Environmental Protection Agency, Environmental Research Laboratory in Gulf Breeze, Florida. The main conclusion from the bioassay study was that the concentrations of hydrocarbons measured at the field sites where water samples were taken tended to be three orders of magnitude lower than the hydrocarbon concentrations causing toxic responses in mysid and white shrimp. There were no detected effects of the brown shrimp population along the Texas coast from the MEGA BORG oil spill

  15. Pink adhesive substance on washstand, toilet and bathroom; Yokushitau toire senmendai nadoni hasseisuru pinkuiro fuchakubutsu

    Energy Technology Data Exchange (ETDEWEB)

    Furuhata, K. [The Tokyo Metropolitan Research Laboratory of Public Health, Tokyo (Japan)

    1996-01-05

    This paper describes the result of discussions on pink substances deposited on bathrooms and washstands. These deposits are in the form of cluster of rod-shaped germ-like microorganisms of various sizes, considered a kind of slime. According to a germ growing test, the number of germ was estimated to be 220,000 to 300 million per cm{sup 3}. In a test on four cases using Gram stain, the types of germs constituting the slime were found being consisted of three to seven genera, and methylobacterium is the constitutive bacteria common to the slimes. The pink color in the slimes is thought attributable to this bacteria. The slime is formed from the deposited bacteria that proliferate under high temperature and humidity using soap and other materials as its nutrient. The slime is generated in places where tap water is used. Methylobacterium has high chlorine resistivity, which gives a high possibility of the bacteria growing to a type that involves in the initial formation of the slime. Although this slime gives no effect to healthy people, infants who have been infected with specific bacteria may have their diseases aggravated as a result of activities of the slime. Slime generation may be prevented effectively by good ventilation and removal of organic matters. 4 refs., 4 figs., 4 tabs.

  16. Extreme morphologies of mantis shrimp larvae

    DEFF Research Database (Denmark)

    Haug, Carolin; Ahyong, Shane T.; Wiethase, Joris H.

    2016-01-01

    Larvae of stomatopods (mantis shrimps) are generally categorized into four larval types: antizoea, pseudozoea (both representing early larval stages), alima and erichthus (the latt er two representing later larval stages). These categories, however, do not refl ect the existing morphological...

  17. Gulf of Mexico Shrimp Permit Gear Survey

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Data set contains annual vessel gear characterization of permit holders shrimp vessel. Data includes net type, TED type, BRD type, etc.

  18. Three Pink Decades: Breast Cancer Coverage in Magazine Advertisements.

    Science.gov (United States)

    AbiGhannam, Niveen; Chilek, Lindsay A; Koh, Hyeseung E

    2018-04-01

    Breast cancer advocacy has experienced tremendous success since the 1980s. Yet, the quality and authenticity of breast cancer information in the media are sometimes questionable. Using a content analysis, we examined the informative (donation information, breast cancer advocacy content, etc.) and persuasive (appeals used, cues to action, etc.) contents of magazine advertisements relevant to breast cancer. While ads offered minimal informative content about the disease or about ways by which sales will contribute to the breast cancer cause, they integrated "breast cancer appeals," such as the color pink, the pink ribbon, and mostly positive depictions of survivorship and hope, into the ads. Breast cancer thus took center stage in the persuasive content of the ads, but a back seat when it came to their informative content. We discuss the implications of those findings in light of the meanings and purposes of cause-related marketing campaigns.

  19. Time response measurements of pressure sensors using pink noise technique

    International Nuclear Information System (INIS)

    Pereira, Iraci Martinez; Santos, Roberto Carlos dos

    2009-01-01

    This work presents an experimental setup for Pink Noise method application on pressure transmitters' response times. The Pink Noise method consists on injecting artificial pressure noise into the pressure transmitter. The artificial pressure noise is generated using a current-to-pressure (I-to-P) converter, which is driven by a random noise signal generator. The output pressure transmitter noise is then analyzed using conventional Noise Analysis Technique. Noise signals may be interpreted using spectral techniques or empirical time series models. The frequency domain method consists of evaluating the Power Spectral Density (PSD) function. The information needed for time constant estimation can be obtained by fitting an all-pole transfer function to this power spectral density. (author)

  20. The Importance of Supratidal Habitats for Wintering Shorebirds and the Potential Impacts of Shrimp Aquaculture

    Science.gov (United States)

    Yasué, M.; Dearden, P.

    2009-06-01

    Intensive black tiger shrimp ( Penaeus monodon) aquaculture ponds have replaced significant areas of coastal wetlands throughout tropical Asia. Few studies have assessed potential impacts on avian foraging habitats. At Khao Sam Roi Yod National Park, Thailand, seminatural wetlands have been converted to either shrimp ponds or to salinization ponds that provide saline water for shrimp aquaculture. Although shorebirds cannot feed in aquaculture ponds, hypersaline ponds can provide productive foraging areas. Thus, the overall impact of the shrimp industry on shorebirds depends partly on the relative quality of the salt ponds compared to seminatural wetlands. In this study, we examined wintering shorebird use of tidal ( N = 5 sites) and supratidal areas (four wetland sites, four salt pond sites) and compared the shorebird community (14 species), prey availability, profitability, and disturbance rates between wetlands and salt ponds. Two shorebird species fed in higher densities in wetlands, whereas seven species were more abundant in salt ponds. Large juvenile fish and dragonfly larvae were more abundant in wetlands, whereas there were more small Chironomid midge and fly larvae in salt ponds. We conclude that salt ponds might provide higher-quality foraging habitats compared to wetlands for small shorebirds species because of the abundance of small larvae. However, the shrimp aquaculture industry reduces habitat availability for shorebirds feeding on larger prey. This study demonstrates a comprehensive, multispecies approach to assess the impacts of a large-scale change in coastal habitats for wintering shorebirds.

  1. Pink Globalization: Hello Kitty sebagai Instrumen Soft-Diplomacy Jepang

    OpenAIRE

    Rijal, Najamuddin Khairur

    2017-01-01

    Pink globalization merujuk pada istilah untuk menggambarkan popularitas internasional Hello Kitty melalui penyebaran berbagai jenis produk berlabel Hello Kitty yang kawaii dari Jepang sebagai bagian dari dunia industri. Popularitas Hello Kitty tersebut merupakan soft-power yang memberikan kekuatan nasional tersendiri Jepang. Jepang kemudian menjadikan Hello Kitty sebagai instrumen soft-diplomacy sebagai upaya meningkatkan citra pariwisata dan menarik wisatawan untuk berkunjung ke Jepang. Tuli...

  2. The Time is Gone!? Pink Floyds "Time" (1973)

    OpenAIRE

    Hantschel, Florian

    2012-01-01

    This paper provides a hermeneutic approach on Pink Floyds popular song "Time" from 1973s album Dark Side Of The Moon. The primary aim of this examination is the analysis of the conceptual connection of music and lyrics in this song. Moreover, derivation of semantic meaning potential is used to form an intersubjectively verifiable song interpretation. All in all, the main results of this analysis suggest a close connection of the songs musical parameters, i.e. form, harmony, melody, rhythm as ...

  3. Investigating the biometric and physicochemical characteristics of freshly harvested Pacific white shrimp (Litopenaeus vannamei): a comparative approach.

    Science.gov (United States)

    Okpala, Charles Odilichukwu R; Bono, Gioacchino

    2016-03-15

    The practicality of biometrics of seafood cannot be overemphasized, particularly for competent authorities of the shrimp industry. However, there is a paucity of relevant literature on the relationship between biometric and physicochemical indices of freshly harvested shrimp. This work therefore investigated the relationship between biometric (standard length (SL), total weight (TW) and condition factor (CF)) and physicochemical (moisture content, pH, titratable acidity, water activity, water retention index, colour values and fracturability) characteristics of freshly harvested Pacific white shrimp (Litopenaeus vannamei) obtained from three different farms. The relationships between these parameters were determined using correlation and regression analyses. No significant correlation (P > 0.05) was found between the biometric and physicochemical indices of the sampled L. vannamei specimens. Possibly the lack of post-mortem and physical change(s) at day of harvest together with the absence of temporal variable may have collectively limited the degree of any significant correlation between biometric and physicochemical data points measured in this study. Although the TWs of freshly harvested L. vannamei shrimp resembled (P > 0.05), SL and CF differed significantly (P shrimp. Across the farms studied, however, the biometric data were comparable. To best knowledge, this is the first study to investigate the biometric and physicochemical properties of freshly harvested shrimp using a comparative approach, which is also applicable to other economically important aquaculture species. Overall, this work provides useful information for competent authorities/stakeholders of the fishery industry and serves as a baseline for preservative treatments. © 2015 Society of Chemical Industry.

  4. The mitochondrial fusion-promoting factor mitofusin is a substrate of the PINK1/parkin pathway.

    Directory of Open Access Journals (Sweden)

    Angela C Poole

    2010-04-01

    Full Text Available Loss-of-function mutations in the PINK1 or parkin genes result in recessive heritable forms of parkinsonism. Genetic studies of Drosophila orthologs of PINK1 and parkin indicate that PINK1, a mitochondrially targeted serine/threonine kinase, acts upstream of Parkin, a cytosolic ubiquitin-protein ligase, to promote mitochondrial fragmentation, although the molecular mechanisms by which the PINK1/Parkin pathway promotes mitochondrial fragmentation are unknown. We tested the hypothesis that PINK1 and Parkin promote mitochondrial fragmentation by targeting core components of the mitochondrial morphogenesis machinery for ubiquitination. We report that the steady-state abundance of the mitochondrial fusion-promoting factor Mitofusin (dMfn is inversely correlated with the activity of PINK1 and Parkin in Drosophila. We further report that dMfn is ubiquitinated in a PINK1- and Parkin-dependent fashion and that dMfn co-immunoprecipitates with Parkin. By contrast, perturbations of PINK1 or Parkin did not influence the steady-state abundance of the mitochondrial fission-promoting factor Drp1 or the mitochondrial fusion-promoting factor Opa1, or the subcellular distribution of Drp1. Our findings suggest that dMfn is a direct substrate of the PINK1/Parkin pathway and that the mitochondrial morphological alterations and tissue degeneration phenotypes that derive from mutations in PINK1 and parkin result at least in part from reduced ubiquitin-mediated turnover of dMfn.

  5. Loss of PINK1 increases the heart's vulnerability to ischemia-reperfusion injury.

    Directory of Open Access Journals (Sweden)

    Hilary K Siddall

    Full Text Available Mutations in PTEN inducible kinase-1 (PINK1 induce mitochondrial dysfunction in dopaminergic neurons resulting in an inherited form of Parkinson's disease. Although PINK1 is present in the heart its exact role there is unclear. We hypothesized that PINK1 protects the heart against acute ischemia reperfusion injury (IRI by preventing mitochondrial dysfunction.Over-expressing PINK1 in HL-1 cardiac cells reduced cell death following simulated IRI (29.2±5.2% PINK1 versus 49.0±2.4% control; N = 320 cells/group P5 animals/group; P<0.05. Cardiomyocytes isolated from PINK1-/- hearts had a lower resting mitochondrial membrane potential, had inhibited mitochondrial respiration, generated more oxidative stress during simulated IRI, and underwent rigor contracture more rapidly in response to an uncoupler when compared to PINK1+/+ cells suggesting mitochondrial dysfunction in hearts deficient in PINK1.We show that the loss of PINK1 increases the heart's vulnerability to ischemia-reperfusion injury. This may be due, in part, to increased mitochondrial dysfunction. These findings implicate PINK1 as a novel target for cardioprotection.

  6. A synthesis of dominant ecological processes in intensive shrimp ponds and adjacent coastal environments in NE Australia

    International Nuclear Information System (INIS)

    Burford, M.A.; Costanzo, S.D.; Dennison, W.C.; Jackson, C.J.; Jones, A.B.; McKinnon, A.D.; Preston, N.P.; Trott, L.A.

    2003-01-01

    One of the key environmental concerns about shrimp farming is the discharge of waters with high levels of nutrients and suspended solids into adjacent waterways. In this paper we synthesize the results of our multidisciplinary research linking ecological processes in intensive shrimp ponds with their downstream impacts in tidal, mangrove-lined creeks. The incorporation of process measurements and bioindicators, in addition to water quality measurements, improved our understanding of the effect of shrimp farm discharges on the ecological health of the receiving water bodies. Changes in water quality parameters were an oversimplification of the ecological effects of water discharges, and use of key measures including primary production rates, phytoplankton responses to nutrients, community shifts in zooplankton and δ 15 N ratios in marine plants have the potential to provide more integrated and robust measures. Ultimately, reduction in nutrient discharges is most likely to ensure the future sustainability of the industry

  7. Immune response and parasitic infestation on Pacific white shrimp (Lithopenaeus vannamei) in immuno-probio circulation system (SI-PBR) in ponds

    Science.gov (United States)

    Mahasri, G.; Sari, P. D. W.; Prayogo

    2018-04-01

    The main causes of death of pacific white shrimp in aquaculture are diseases. One effort to control deseases by improving the defense ability of shrimp body against disesases and optimizing water quality during farming through the application of a new aquaculture technology called Immuno-Probiocirculation System (SI-PBR). This research aimed to analyze immune response on Total Haemocyte Count (THC) and Differential Haemocyte Count (DHC), parasitic infestation on pacific white shrimp in many ages, survival rate of pacific white shrimp during farming period for 90 days in SI-PBR. The results of this research showed that the lowest parasitic infestation (Zoothamnium penaei) is 12.46 % that happened on 90-days-old shrimp in SI-PBR pond, while the highest infestasion is on the shrimp not given SI-PBR, reaching 54.65 %. In addition, the immune response (THC and DHC) also increased. The highest survival rate discovered in 90 days shrimp farming is 80% using SI-PBR. This is higher than the pond without SI-PBR, which is 22 %. Therefore, SI-PBR in shrimp farming in tradisional ponds is able to increase immune response, survival rate, and is also able to decrease parasitic infestation during 90 days of farming.

  8. Pink Mold Rot on Unishiu Orange (Citrus unshiu Mac. Caused by Trichothecium roseum (Pers. Link ex Gray in Korea

    Directory of Open Access Journals (Sweden)

    Jin-Hyeuk Kwon

    2013-09-01

    Full Text Available In 2012, a pink mold rot was observed on unishiu orange (Citrus unshiu Mac. fruits at the Wholesale Market for Agricultural Products, Jinju, Korea. The symptom on unishiu orange was a water-soaked lesion on the surface of fruit, which later on enlarged to form softened brown rot lesions. The diseased fruits were covered with pink-colored mold, consisting of conidia and conidiophores of the pathogen. Optimum temperature for mycelial growth was 25oC. Conidia were hyaline, smooth, 2-celled, and thick-walled conidia with truncate bases, ellipsoidal to pyriform, characteristically held together zig-zag chains and 12−26 × 8−12 μm in size. Conidiophore was erect, colorless, unbranched, and 4−5 μm wide. On the basis of mycological characteristics, pathogenicity test, and molecular analysis with complete ITS rDNA region, the causal fungus was identified as Trichothecium roseum (Pers. Link ex Gray. This is the first report of pink mold rot caused by T. roseum on unishiu orange in Korea.

  9. Review of the African distribution of the brine shrimp genus Artemia ...

    African Journals Online (AJOL)

    Brine shrimp (genus Artemia) are small (8 to 12 mm long) cosmopolitan crustaceans (Anostraca) found predominately in hypersaline water bodies such as inland salt lakes and pans, coastal lagoons, and salt works at salinity levels above 40 g·ℓ-1. They have been extensively studied due to their high monetary value as ...

  10. Clonal occurrence of Salmonella Weltevreden in cultured shrimp in the Mekong Delta, Vietnam

    DEFF Research Database (Denmark)

    Uddin, Gazi Md Noor; Larsen, Marianne Halberg; Barco, Lisa

    2015-01-01

    . Weltevreden was susceptible to most antimicrobials tested, with a few strains being resistant to florfenicol, chloramphenicol, sulfamethoxazole or trimethoprim. Future studies of the ecology of S. Weltevreden should establish if this serovar may survive better and even multiply in warm-water shrimp farm...

  11. Effects of carbohydrate addition on production in extensive shrimp culture systems

    NARCIS (Netherlands)

    Hari, B.; Kurup, B.M.; Varghese, J.T.; Schrama, J.W.; Verdegem, M.C.J.

    2004-01-01

    One indoor and one on-farm trial were conducted to evaluate the effect of control of carbon/ nitrogen ratio (C/N ratio) by addition of carbohydrate to the water column in extensive types of shrimp culture systems. In the indoor experiment, 25% and 40% dietary protein ('P25' and 'P40') with or

  12. Direct Nitrous Oxide Emission from the Aquacultured Pacific White Shrimp (Litopenaeus vannamei).

    Science.gov (United States)

    Heisterkamp, Ines M; Schramm, Andreas; de Beer, Dirk; Stief, Peter

    2016-07-01

    The Pacific white shrimp (Litopenaeus vannamei) is widely used in aquaculture, where it is reared at high stocking densities, temperatures, and nutrient concentrations. Here we report that adult L. vannamei shrimp emit the greenhouse gas nitrous oxide (N2O) at an average rate of 4.3 nmol N2O/individual × h, which is 1 to 2 orders of magnitude higher than previously measured N2O emission rates for free-living aquatic invertebrates. Dissection, incubation, and inhibitor experiments with specimens from a shrimp farm in Germany indicated that N2O is mainly produced in the animal's gut by microbial denitrification. Microsensor measurements demonstrated that the gut interior is anoxic and nearly neutral and thus is favorable for denitrification by ingested bacteria. Dinitrogen (N2) and N2O accounted for 64% and 36%, respectively, of the nitrogen gas flux from the gut, suggesting that the gut passage is too fast for complete denitrification to be fully established. Indeed, shifting the rearing water bacterial community, a diet component of shrimp, from oxic to anoxic conditions induced N2O accumulation that outlasted the gut passage time. Shrimp-associated N2O production was estimated to account for 6.5% of total N2O production in the shrimp farm studied here and to contribute to the very high N2O supersaturation measured in the rearing tanks (2,099%). Microbial N2O production directly associated with aquacultured animals should be implemented into life cycle assessments of seafood production. The most widely used shrimp species in global aquaculture, Litopenaeus vannamei, is shown to emit the potent greenhouse gas nitrous oxide (N2O) at a particularly high rate. Detailed experiments reveal that N2O is produced in the oxygen-depleted gut of the animal by bacteria that are part of the shrimp diet. Upon ingestion, these bacteria experience a shift from oxic to anoxic conditions and therefore switch their metabolism to the anaerobic denitrification process, which produces N

  13. Histopathological and biochemical evidence of hepatopancreatic toxicity caused by cadmium in white shrimp, Palaemonetes argentinus.

    Science.gov (United States)

    Chiodi Boudet, L N; Polizzi, P; Romero, M B; Robles, A; Marcovecchio, J E; Gerpe, M S

    2015-03-01

    Cadmium (Cd) is one of the most common pollutants in the environment and induces a range of tissue changes or damages and organ dysfunction. The histopathological effects of Cd and lipid peroxidation (LPO) on hepatopancreas of the freshwater shrimp, Palaemonetes argentinus, were studied. Shrimp were obtained from two lagoons with contrasting environmental quality, De los Padres (LP, impacted site) and Nahuel Rucá (NR, reference site), and were exposed to 3.06 and 12.24µgCdL(-1) for 3, 7, 10 and 15 days. The health status of both populations was also evaluated by histological analysis of control individuals. After exposure, shrimp were transferred to clean water for 28 days to evaluate the recuperation capacity of hepatopancreas. Control shrimp from NR exhibited a normal hepatopancreas structure; unlike control shrimp from LP which showed several alterations. These results were attributed to the different environmental quality of lagoons. The exposure to Cd resulted in several alterations in the histological structure of the hepatopancreas of both populations. The observed alterations included haemocytic and connective infiltrations in the intertubular space, erosioned microvilli, ripple of basal lamina, atrophied epithelium and necrosis, however, the latter was only observed in shrimp from LP. The exposure also caused an increase of LPO levels in both populations. P. argentinus was able to repair the hepatopancreas structure from the damage caused by Cd, evidenced by the histopathological results and LPO levels. Obtained results are indicating that the histological analysis of the hepatopancreas proved to be a highly sensitive method for evaluating water quality, in both environmental and laboratory conditions. Copyright © 2014 Elsevier Inc. All rights reserved.

  14. Population structure and recruitment of penaeid shrimps in ...

    African Journals Online (AJOL)

    Population structure and recruitment of penaeid shrimps in mozambique. ... This study characterizes the population structure and identifies nursery areas and recruitment seasons of penaeid shrimps in the ... AJOL African Journals Online.

  15. White spot viral disease in penaeid shrimp-a review

    OpenAIRE

    Sangamaheswaran, A.P.; Jeyaseelan, M.J.P.

    2001-01-01

    The white spot viral disease in penaeid shrimp affects the development of the global shrimp industry. This paper reviews the viruses that cause the disease, the transmission of the virus, diagnosis and preventive measures.

  16. Penaeid Shrimp Salinity Gradient Tank Study 2005-2008

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — We designed an experimental gradient tank to examine salinity preferences of juvenile brown shrimp and white shrimp. Although no strong pattern of salinity avoidance...

  17. The Effect of Pink Uniform Color on Future Imaging among Female Student Nurses

    OpenAIRE

    石井, 国雄; 加藤, 樹里; 田戸岡, 好香

    2017-01-01

    Responding to various social demands, variety of nurse uniforms have been created and worn. The present study examined the effects of pink nursing uniform on self-perception and work motivation among female student nurses. We hypothesized that female student nurses would perceive themselves more competent and increase work motivation in the pink condition. In the experiment, Japanese female student nurses imaged their future career as nurse, watching the illustration of nurse either in a pink...

  18. Pretty in pink: The early development of gender-stereotyped colour preferences.

    Science.gov (United States)

    Lobue, Vanessa; Deloache, Judy S

    2011-09-01

    Parents commonly dress their baby girls in pink and their baby boys in blue. Although there is research showing that children prefer the colour blue to other colours (regardless of gender), there is no evidence that girls actually have a special preference for the colour pink. This is the focus of the current investigation. In a large cross-sectional study, children aged 7 months to 5 years were offered eight pairs of objects and asked to choose one. In every pair, one of the objects was always pink. By the age of 2, girls chose pink objects more often than boys did, and by the age of 2.5, they had a significant preference for the colour pink over other colours. At the same time, boys showed an increasing avoidance of pink. These results thus reveal that sex differences in young children's preference for the colour pink involves both an increasing attraction to pink by young girls and a growing avoidance of pink by boys. © 2011 The British Psychological Society.

  19. Susceptibility of juvenile European lobster Homarus gammarus to shrimp products infected with high and low doses of white spot syndrome virus.

    Science.gov (United States)

    Bateman, K S; Munro, J; Uglow, B; Small, H J; Stentiford, G D

    2012-08-27

    White spot syndrome virus (WSSV) is the most important pathogen known to affect the sustainability and growth of the global penaeid shrimp farming industry. Although most commonly associated with penaeid shrimp farmed in warm waters, WSSV is also able to infect, cause disease in and kill a wide range of other decapod crustaceans, including lobsters, from temperate regions. In 2005, the European Union imported US$500 million worth of raw frozen or cooked frozen commodity products, much of which originated in regions positive for white spot disease (WSD). The presence of WSSV within the UK food market was verified by means of nested PCR performed on samples collected from a small-scale survey of supermarket commodity shrimp. Passage trials using inoculum derived from commodity shrimp from supermarkets and delivered by injection to specific pathogen-free Pacific white shrimp Litopenaeus vannamei led to rapid mortality and pathognomonic signs of WSD in the shrimp, demonstrating that WSSV present within commodity shrimp was viable. We exposed a representative European decapod crustacean, the European lobster Homarus gammarus, to a single feeding of WSSV-positive, supermarket-derived commodity shrimp, and to positive control material (L. vannamei infected with a high dose of WSSV). These trials demonstrated that lobsters fed positive control (high dose) frozen raw products succumbed to WSD and displayed pathognomonic signs associated with the disease as determined by means of histology and transmission electron microscopy. Lobsters fed WSSV-positive, supermarket-derived commodity shrimp (low dose) did not succumb to WSD (no mortality or pathognomonic signs of WSD) but demonstrated a low level or latent infection via PCR. This study confirms susceptibility of H. gammarus to WSSV via single feedings of previously frozen raw shrimp products obtained directly from supermarkets.

  20. Gamma Irradiation for the Inhibition of Shrimp (Penaeus aztecus) Allergy

    International Nuclear Information System (INIS)

    Kim Jae-Hun; Lee Ju-Woon

    2000-01-01

    Food irradiation technology was conducted to reduce shrimp allergy. The experiment was designated in 3 portions as follows; A, the irradiation of raw shrimp; B the irradiation of shrimp and then cooking; and C, cooking the shrimp and then irradiation. Gamma irradiation was done with doses of 1, 3, 5, 7, 10 kGy. A shrimp sarcoplasmic protein solution (SSPS) and a myofibrillar protein solution (SMPS) were prepared from A portion. Cooked shrimp protein solutions were also prepared from B and C portions. The binding abilities of the shrimp allergic patients' IgE and mouse monoclonal Ab 4.9.5 (mAb 4.9.5), produced to the shrimp heat-stable protein, to each sample solution were determined by ELISA. Binding abilities of patients' IgE and mAb 4.9.5 to irradiated shrimp fractions were dose-dependently reduced. The cooking treatment after irradiation was more effective than the irradiation treatment after cooking in the reduction of the binding abilities of IgE and IgG. SDS-PAGE was performed to compare irradiated shrimp proteins with non-irradiated shrimp proteins. SDS-PAGE showed that no bands were changed by gamma irradiation. The results indicated that food irradiation with an adequate dose can be reduce allergenicity of shrimp

  1. Intestinal bacterial signatures of white feces syndrome in shrimp.

    Science.gov (United States)

    Hou, Dongwei; Huang, Zhijian; Zeng, Shenzheng; Liu, Jian; Wei, Dongdong; Deng, Xisha; Weng, Shaoping; Yan, Qingyun; He, Jianguo

    2018-04-01

    Increasing evidence suggests that the intestinal microbiota is closely correlated with the host's health status. Thus, a serious disturbance that disrupts the stability of the intestinal microecosystem could cause host disease. Shrimps are one of the most important products among fishery trading commodities. However, digestive system diseases, such as white feces syndrome (WFS), frequently occur in shrimp culture and have led to enormous economic losses across the world. The WFS occurrences are unclear. Here, we compared intestinal bacterial communities of WFS shrimp and healthy shrimp. Intestinal bacterial communities of WFS shrimp exhibited less diversity but were more heterogeneous than those of healthy shrimp. The intestinal bacterial communities were significantly different between WFS shrimp and healthy shrimp; compared with healthy shrimp, in WFS shrimp, Candidatus Bacilloplasma and Phascolarctobacterium were overrepresented, whereas Paracoccus and Lactococcus were underrepresented. PICRUSt functional predictions indicated that the relative abundances of genes involved in energy metabolism and genetic information processing were significantly greater in WFS shrimp. Collectively, we found that the composition and predicted functions of the intestinal bacterial community were markedly shifted by WFS. Significant increases in Candidatus Bacilloplasma and Phascolarctobacterium and decreases in Paracoccus and Lactococcus may contribute to WFS in shrimp.

  2. Selection of proteolytic bacteria with ability to inhibit Vibrio harveyi during white shrimp (Litopenaeus vannamei cultivation

    Directory of Open Access Journals (Sweden)

    Suntinanalert, P.

    2007-03-01

    Full Text Available Five isolates of bacteria with high proteolytic activity, isolated from water samples of intensive shrimp ponds in southern Thailand, were selected to test for the ability to control the shrimp pathogen Vibrioharveyi. 70 μl of each culture broth were investigated for their ability to inhibit V. harveyi using an agar well diffusion test but only one isolate W3 gave a reasonable sized inhibition zone of 21.62 mm. This zone wassimilar to that of oxolinic acid (2 μg and sulfamethoxazole (25 μg. The W3 isolate was identified as Pseudomonas sp. Shrimp cultivation in aquaria was conducted to investigate the inhibition of V. harveyi bythe isolate W3. The experiment consisted of a treatment of the shrimp culture with an inoculum of the isolate W3 and V. harveyi (biocontrol set, a positive control set (only inoculation of V. harveyi and a negativecontrol set as without inoculation. No mortality was found in the negative control. Shrimp mortality in the biocontrol set (33% was lower than that in the positive control set (40%; however, it showed no significantdifference (p>0.05. The average numbers of V. harveyi over 12 days of the biocontrol set were lower than those in the positive control set by about 1 log cycle although the numbers were not significantly different(p>0.05. The shrimp growth rate at day 32 of cultivation was in order of the biocontrol treatment (10.17% > the negative control treatment (9.44% > the positive control set (9.28%, but no significant difference (p>0.05 was observed among treatments.

  3. Distribution Pattern of Shrimps and Fish Among Avicenniaand RhizophoraMicrohabitats in the Pagbilao Mangroves, Philippines

    Science.gov (United States)

    Rönnbäck, P.; Troell, M.; Kautsky, N.; Primavera, J. H.

    1999-02-01

    For sustainable management of mangrove ecosystems, there is a pressing need to increase our knowledge of fish and invertebrates associated with this system. This study sampled microhabitats (89-258 m 2) inside the mangrove forest at Pagbilao, the Philippines, on two consecutive spring tides using stake nets. Distribution patterns of shrimps and fish were compared among four microhabitats that differed in dominant mangrove species ( Avicennia marina, A. officinalisor Rhizophora apiculata), structural complexity of the root system, and proximity to open water habitat. A 5 to 6-year-old replanted Rhizophoramicrohabitat was also sampled to study faunal recolonization following replantation. The mean (±SE) density of the shrimp community was 1·5±0·2 shrimps m -2, dominated by Palaemonidae, followed by Acetessp., Penaeus merguiensisand Metapenaeus ensis. The highest shrimp density was observed in the replanted Rhizophorahabitat, which also had the highest structural complexity. The mean (±SE) density and biomass of the fish community was 5·1±2·0 fish m -2and 10·4±3·3 g m -2, respectively, dominated by Ambassis kopsi, A. urotaeniaand Atherinomorus balabacensis. The fish community preferred the pneumatophore ( Avicennia) microhabitats to the prop root ( Rhizophora) habitats. Highest fish abundance and biomass were observed in the most inland habitat, which also lacked larger (total length >100 mm) carnivorous fish. The results demonstrate the extensive use of intertidal mangrove forests by vagile fauna, as well as the successful recolonization by shrimps and fish of replanted Rhizophorahabitat. The role of mangroves as predation refuges, based on the distribution pattern of shrimps and fish, is discussed. Sampling strategies in mangrove intertidal habitat are also outlined.

  4. The efficacy testing of irradiated shrimp paste

    International Nuclear Information System (INIS)

    Nouchpramool, Kovit; Eamsiri, Jaruratana; Sujjabut, Surusak

    2005-10-01

    Two lots of shrimp paste from commercial source in Samutsakhon were irradiated at a recommended minimum dose of 6 kGy using a J S 8900 cobalt-60 carrier gamma irradiator of Thai Irradiation Center in Patum Thani. Red Perspex dosimeter were used to measure the absorbed dose throughout the product with emphasis on the region of minimum and maximum absorbed dose. This way, it was aimed to compare the dose effects of gamma irradiation on the microbiological, chemical and sensory quality of shrimp paste. The results indicated that the shrimp paste received minimum and maximum absorbed dose of 6.85 and 12.83 kGy with dose uniformity ratio of 1.87 . Throughput rate is 468 kilogram per hour. The microbiological load of shrimp paste was rather high resulting in not compliance with Thai industrial standard 1080-2535. Irradiation at 6.8 kGy reduced total viable bacterial count by one log cycle. Although the irradiated product was organoleptic ally acceptable and could be kept for 16 months at room temperature, mold and Clostridium perfringens were still present in some samples after irradiation and during prolonged storage in amount that exceeds the limitation of Thai industrial standard. Chemical properties such as p H, moisture and sodium chloride content of irradiated shrimp paste were not significantly changed after irradiation

  5. Climate change, pink salmon, and the nexus between bottom-up and top-down forcing in the subarctic Pacific Ocean and Bering Sea.

    Science.gov (United States)

    Springer, Alan M; van Vliet, Gus B

    2014-05-06

    Climate change in the last century was associated with spectacular growth of many wild Pacific salmon stocks in the North Pacific Ocean and Bering Sea, apparently through bottom-up forcing linking meteorology to ocean physics, water temperature, and plankton production. One species in particular, pink salmon, became so numerous by the 1990s that they began to dominate other species of salmon for prey resources and to exert top-down control in the open ocean ecosystem. Information from long-term monitoring of seabirds in the Aleutian Islands and Bering Sea reveals that the sphere of influence of pink salmon is much larger than previously known. Seabirds, pink salmon, other species of salmon, and by extension other higher-order predators, are tightly linked ecologically and must be included in international management and conservation policies for sustaining all species that compete for common, finite resource pools. These data further emphasize that the unique 2-y cycle in abundance of pink salmon drives interannual shifts between two alternate states of a complex marine ecosystem.

  6. Balancing options for shrimp farming : a landscape approach to investigate the future of shrimp farming in the Mekong Delta

    NARCIS (Netherlands)

    Joffre, O.M.

    2015-01-01

    Balancing options for shrimp farming

    A landscape approach to investigate the future of shrimp farming in the Mekong Delta

    Olivier Joffre

    While providing an option for development in coastal areas, shrimp farming is usually associated with high environmental

  7. Effect of brine marination on survival and growth of spoilage and pathogenic bacteria during processing and subsequent storage of ready-to-eat shrimp (Pandalus borealis)

    DEFF Research Database (Denmark)

    Mejlholm, Ole; Devitt, Tina D.; Dalgaard, Paw

    2012-01-01

    The effect of brine marination at chill temperatures on survival and growth of spoilage and pathogenic bacteria during processing and subsequent storage of ready-to-eat cold water shrimp was studied. Survival and growth of Lactobacillus sakei, Listeria monocytogenes, Salmonella, Staphylococcus...... aureus and Vibrio parahaemolyticus were examined. The effect of brine composition and pH was determined in 12 screening experiments without addition of shrimp. Sixteen challenge tests with shrimp were then carried out to examine the effect of brine composition and storage temperature on survival...

  8. Drama of the commons in small-scale shrimp aquaculture in northwestern, Sri Lanka

    Directory of Open Access Journals (Sweden)

    Eranga Kokila Galappaththi

    2015-03-01

    Full Text Available Aquaculture, and shrimp aquaculture in particular, can have major social and environmental impacts. However, aquaculture remains an understudied area in commons research. Can aspects of commons theory be applied to solve problems of aquaculture? We examined three coastal community-based shrimp aquaculture operations in northwestern Sri Lanka using a case study approach. These shrimp farms were individually owned by small producers and managed under local-level rules designed by cooperatives (samithis. The common-pool resource of major interest was water for aquaculture ponds, obtained from an interconnected common water body. We evaluated the shrimp farming social-ecological system by using Ostrom’s design principles for collective action. Key elements of the system were: clearly defined boundaries; collaboratively designed crop calendar, bottom-up approach involving community associations, multi-level governance, and farmers-and-government collaborative structures. Together, these elements resolved the excludability and subtractability problems of commons by establishing boundary and membership rules and collective choice rules.

  9. Determination of Biogenic Amines in Different Shrimp Species for Export

    International Nuclear Information System (INIS)

    Myat Myat Thaw; Oo Aung; Aung Myint; Bisswanger, Hans

    2004-06-01

    This study is part of the project on the ''Quality Assurance of Different Shrimp Species for Export''. Local shrimp samples were collected from Ministry of Livestock and Fisheries and various private enterprises. Contents of biogenic amines were determined by using benzoyl chloride derivatization method with HPLC (reverse phase high performance liquid chromatography). Based on the biogenic amines, quality index of shrimps were correlated with freshness index so that the grade of shrimp samples can be classified as excellent, good, and acceptable. All sizes of shrimps such as extra large, large, medium were found to excceptable respectively

  10. Improvement in Shrimp Hatchery Procedures for Toxicity Tests

    International Nuclear Information System (INIS)

    Nor Azizah Marsiddi; Fazliana Mohd Saaya; Anee Suryani Sued

    2015-01-01

    Toxicity testing of brine shrimp Artemia salina Brine shrimp lethality assay is a screening test to determine half the dose mortality (LC50) for its shrimp given certain herbal extract at a concentration tested. The shrimp child mortality half a dose indicator to determine level of toxicity before further testing done on animal cell culture and animal experiments also on the mouse. The use of new hardware, namely Artemio 1 has increased its shrimp production at a rate that more and faster than the use of the black box hatching previously taken from the method by Solis, 1993. brine shrimp eggs from Artemio mix also easier to use because it contains egg and sea salt have been ready mixed for use in experiments. In conclusion, this method improvements help increase the number of offspring produced shrimp and produce experimental method easier than previous methods. (author)

  11. Responses of pink salmon to CO2-induced aquatic acidification

    Science.gov (United States)

    Ou, Michelle; Hamilton, Trevor J.; Eom, Junho; Lyall, Emily M.; Gallup, Joshua; Jiang, Amy; Lee, Jason; Close, David A.; Yun, Sang-Seon; Brauner, Colin J.

    2015-10-01

    Ocean acidification negatively affects many marine species and is predicted to cause widespread changes to marine ecosystems. Similarly, freshwater ecosystems may potentially be affected by climate-change-related acidification; however, this has received far less attention. Freshwater fish represent 40% of all fishes, and salmon, which rear and spawn in freshwater, are of immense ecosystem, economical and cultural importance. In this study, we investigate the impacts of CO2-induced acidification during the development of pink salmon, in freshwater and following early seawater entry. At this critical and sensitive life stage, we show dose-dependent reductions in growth, yolk-to-tissue conversion and maximal O2 uptake capacity; as well as significant alterations in olfactory responses, anti-predator behaviour and anxiety under projected future increases in CO2 levels. These data indicate that future populations of pink salmon may be at risk without mitigation and highlight the need for further studies on the impact of CO2-induced acidification on freshwater systems.

  12. An overlooked pink species of land iguana in the Galapagos.

    Science.gov (United States)

    Gentile, Gabriele; Fabiani, Anna; Marquez, Cruz; Snell, Howard L; Snell, Heidi M; Tapia, Washington; Sbordoni, Valerio

    2009-01-13

    Despite the attention given to them, the Galápagos have not yet finished offering evolutionary novelties. When Darwin visited the Galápagos, he observed both marine (Amblyrhynchus) and land (Conolophus) iguanas but did not encounter a rare pink black-striped land iguana (herein referred to as "rosada," meaning "pink" in Spanish), which, surprisingly, remained unseen until 1986. Here, we show that substantial genetic isolation exists between the rosada and syntopic yellow forms and that the rosada is basal to extant taxonomically recognized Galápagos land iguanas. The rosada, whose present distribution is a conundrum, is a relict lineage whose origin dates back to a period when at least some of the present-day islands had not yet formed. So far, this species is the only evidence of ancient diversification along the Galápagos land iguana lineage and documents one of the oldest events of divergence ever recorded in the Galápagos. Conservation efforts are needed to prevent this form, identified by us as a good species, from extinction.

  13. Biochemical and chemical characterization of pink-pigmented oxidative bacteria.

    Science.gov (United States)

    Wallace, P L; Hollis, D G; Weaver, R E; Moss, C W

    1990-04-01

    The biochemical and chemical characteristics were determined for 156 clinical isolates of pink-pigmented bacteria that are similar to but distinct from Methylobacterium extorquens (synonymous with Pseudomonas mesophilica). These isolates were gram-negative, nonfermentative, usually nonvacuolated, coccoid rods; all grew at 35 degrees C and were catalase and urease positive; the majority grew on MacConkey agar and were variable for oxidase production and motility. On the basis of oxidation of xylose and mannitol and hydrolysis of esculin, these 156 strains were subdivided into four groups that were designated "pink coccoid" groups I, II, III, and IV. Groups I, II, and III are similar to an unnamed taxon described by Gilardi and Faur in 1984; only strains of group IV hydrolyze esculin. The cellular fatty acid compositions of strains of groups I, II, and III were essentially identical and differed from strains of group IV by the absence of 3-OH-C14:0 and the presence of C19:0 delta and 2-OH-C19:0 delta. The fatty acid composition of group IV strains was most similar to that of M. extorquens but differed by the presence of small amounts of two C17:1 acids, 3-OH-C16:0, and 2-OH-C18:1.

  14. Plant colonization by pink-pigmented facultative methylotrophic bacteria (PPFMs).

    Science.gov (United States)

    Omer, Zahra S; Tombolini, Riccardo; Gerhardson, Berndt

    2004-03-01

    Bacteria belonging to the genus Methylobacterium are characterized by being able to rely on methanol as a sole carbon and energy source and by presenting a more or less intense pink reddish pigmentation. These bacteria, also referred to as pink-pigmented methylotrophic bacteria (PPFMs), are common inhabitants of the phyllosphere and are found in many other environmental samples. Since they grow slowly they are often overlooked and their impact on phyllosphere microbial communities and on the plants harboring them is not well studied nor has their ecology been elucidated. In a survey of PPFM colonization in three different agricultural sites, PPFM populations were identified on both red clover and winter wheat, but red clover was more consistently colonized. Isolations from collected leaves showed PPFM populations to decrease from spring towards summer, but they increased again towards the end of the cropping season. Isolates from red clover readily colonized winter wheat leaves and vice versa in greenhouse experiments, but population sizes were dependent on the application procedure. Tested isolates had also good potential to colonize the rhizosphere, especially after seed inoculations. Confocal scanning laser microscopy showed gfp-tagged isolates to colonize the surface of clover leaves by forming large aggregates.

  15. Evaluation of induced color changes in chicken breast meat during simulation of pink color defect.

    Science.gov (United States)

    Holownia, K; Chinnan, M S; Reynolds, A E; Koehler, P E

    2003-06-01

    The objective of the study was to establish a pink threshold and simulate the pink defect in cooked chicken breast meat with treatment combinations that would induce significant changes in the color of raw and cooked meat. The subjective pink threshold used in judging pink discoloration was established at a* = 3.8. Samples of three color groups (normal, lighter than normal, and darker than normal) of boneless, skinless chicken breast muscles were selected based on instrumental color values. The in situ changes were induced using sodium chloride, sodium tripolyphosphate, sodium erythorbate, and sodium nitrite at two levels: present and not present. Fillets in all treatments were subjected to individual injections, followed by tumbling, cooking, and chilling. Samples were analyzed for color [lightness (L*), red/green axis (a*), yellow/blue axis (b*)] and reflectance spectra. Simulation of the pink defect was achieved in eight of the 16 treatment combinations when sodium nitrite was present and in an additional two treatment combinations when it was absent. Pinking in cooked samples was affected (P meat color. Results confirmed that it was possible to simulate the undesired pinking in cooked chicken white meat when in situ conditions were induced by sodium chloride, sodium tripolyphosphate, and sodium nitrite. The continuation of the simulation study can aid in developing alternative processing methods to eliminate potential pink defects.

  16. Revisiting the Pink Triangle Exercise: An Exploration of Experiential Learning in Graduate Social Work Education

    Science.gov (United States)

    Pugh, Greg L.

    2014-01-01

    The pink triangle exercise is an example of an experiential learning exercise that creates cognitive dissonance and deep learning of unrealized internalized biases among social work students. Students wear a button with a pink triangle on it for 1 day and write a reflection paper. The exercise increases self-awareness, cultural competence, and the…

  17. Progression of subtle motor signs in PINK1 mutation carriers with mild dopaminergic deficit

    DEFF Research Database (Denmark)

    Eggers, C; Schmidt, A; Hagenah, J

    2010-01-01

    While homozygous mutations in the PINK1 gene cause recessively inherited early-onset Parkinson disease (PD), heterozygous mutations have been suggested as a susceptibility factor.......While homozygous mutations in the PINK1 gene cause recessively inherited early-onset Parkinson disease (PD), heterozygous mutations have been suggested as a susceptibility factor....

  18. Early-onset parkinsonism associated with PINK1 mutations: frequency, genotypes, and phenotypes.

    NARCIS (Netherlands)

    Bonifati, V.; Rohe, C.F.; Breedveld, G.J.; Fabrizio, E.; Mari, M. De; Tassorelli, C.; Tavella, A.; Marconi, R.; Nicholl, D.; Chien, H.F.; Fincati, E.; Abbruzzese, G.; Marini, P.; Gaetano, A. De; Horstink, M.W.I.M.; Maat-Kievit, J.A.; Sampaio, C.; Antonini, A.; Stocchi, F.; Montagna, P.; Toni, V.; Guidi, M.; Dalla Libera, A.; Tinazzi, M.; Pandis, F. De; Goldwurm, S.; Klein, A. de; Barbosa, E.; Lopiano, L.; Martignoni, E.; Lamberti, P.; Vanacore, N.; Meco, G.; Oostra, B.A.

    2005-01-01

    OBJECTIVE: To assess the prevalence, nature, and associated phenotypes of PINK1 gene mutations in a large series of patients with early-onset (<50 years) parkinsonism. METHODS: The authors studied 134 patients (116 sporadic and 18 familial; 77% Italian) and 90 Italian controls. The whole PINK1

  19. 75 FR 49460 - Administrative Review of Certain Frozen Warmwater Shrimp From the People's Republic of China...

    Science.gov (United States)

    2010-08-13

    ... the surrogate values for shrimp larvae, diesel fuel, shrimp waste, and by- products. For further... Korean Import Data Comment 3: Shrimp Larvae Comment 4: Shrimp Feed Comment 5: Electricity Comment 6... Certain Frozen Warmwater Shrimp From the People's Republic of China: Final Results and Partial Rescission...

  20. The areal extent of brown shrimp habitat suitability in Mobile Bay, Alabama, USA: Targeting vegetated habitat restoration

    Science.gov (United States)

    Smith, L.M.; Nestlerode, J.A.; Harwell, L.C.; Bourgeois, P.

    2010-01-01

    The availability of wetlands and shallow water habitats significantly influences Gulf of Mexico (GOM) penaeid shrimp fishery productivity. However, the GOM region has the highest rate of wetland loss in the USA. Protection and management of these vital GOM habitats are critical to sustainable shrimp fisheries. Brown shrimp (Farfantepenaeus aztecus) are a major component of GOM fisheries. We present an approach for estimating the areal extent of suitable habitat for post-larval and juvenile brown shrimp in Mobile Bay, Alabama, using an existing habitat suitability index model for the northern GOM calculated from probabilistic survey of water quality and sediment data, land cover data, and submerged aquatic vegetation coverages. This estuarine scale approach is intended to support targeted protection and restoration of these habitats. These analyses indicate that approximately 60% of the area of Mobile Bay is categorized as suitable to near optimal for post-larval and juvenile shrimp and 38% of the area is marginally to minimally suitable. We identify potential units within Mobile Bay for targeted restoration to improve habitat suitability. ?? 2010 Springer Science+Business Media B.V.

  1. Cyanobacteria Community Dynamics and Trophic Status of Intensive Shrimp (Litopenaeus vannamei Farming Pond in Situbondo East Java Indonesia

    Directory of Open Access Journals (Sweden)

    Dian Aliviyanti

    2017-09-01

    Full Text Available The objective of this study was to analyze the dynamics community structure of Cyanobacteria and trophic status in ponds of intensive shrimp culture (Litopenaeus vannamei in Situbondo based on Trophic Diatom Index (TDI.  The ex post facto research was conducted in situ in the hamlet of Pond Mutiara Mas III Klatakan Situbondo East Java Indonesia.  Observation of Cyanobacteria and Diatoms community structure were done every week during four cycles of shrimp farming ponds.  Cycle of shrimp farming ponds is the times for enlargement process of the shrimps from seed to mature which ranges from 90-120 days.  The dependent variables were the density of Cyanobacteria and Diatoms community, as well as chemical parameters nitrite and orthophosphate.  Trophic status was determined from TDI be counted from data of diatom density.  All of the data were then classified using cluster and biplot analysis program PAST Ver. 3.11 to discribe the profile of ecosystem quality.  The research results showed that there were four taxa of Cyanobacteria during farming cycle which the highest density was found from the genus of Oscillatoria.  Based on the value of TDI, we found that the trophic status of water in shrimps pond during the production process was eutrophic until hyper-eutrophic.  The water quality was decreases along with the length of incubation time.

  2. PINK1 is necessary for long term survival and mitochondrial function in human dopaminergic neurons.

    Directory of Open Access Journals (Sweden)

    Alison Wood-Kaczmar

    2008-06-01

    Full Text Available Parkinson's disease (PD is a common age-related neurodegenerative disease and it is critical to develop models which recapitulate the pathogenic process including the effect of the ageing process. Although the pathogenesis of sporadic PD is unknown, the identification of the mendelian genetic factor PINK1 has provided new mechanistic insights. In order to investigate the role of PINK1 in Parkinson's disease, we studied PINK1 loss of function in human and primary mouse neurons. Using RNAi, we created stable PINK1 knockdown in human dopaminergic neurons differentiated from foetal ventral mesencephalon stem cells, as well as in an immortalised human neuroblastoma cell line. We sought to validate our findings in primary neurons derived from a transgenic PINK1 knockout mouse. For the first time we demonstrate an age dependent neurodegenerative phenotype in human and mouse neurons. PINK1 deficiency leads to reduced long-term viability in human neurons, which die via the mitochondrial apoptosis pathway. Human neurons lacking PINK1 demonstrate features of marked oxidative stress with widespread mitochondrial dysfunction and abnormal mitochondrial morphology. We report that PINK1 plays a neuroprotective role in the mitochondria of mammalian neurons, especially against stress such as staurosporine. In addition we provide evidence that cellular compensatory mechanisms such as mitochondrial biogenesis and upregulation of lysosomal degradation pathways occur in PINK1 deficiency. The phenotypic effects of PINK1 loss-of-function described here in mammalian neurons provides mechanistic insight into the age-related degeneration of nigral dopaminergic neurons seen in PD.

  3. Oxidative stress and regulation of Pink1 in zebrafish (Danio rerio.

    Directory of Open Access Journals (Sweden)

    Madhusmita Priyadarshini

    Full Text Available Oxidative stress-mediated neuronal dysfunction is characteristic of several neurodegenerative disorders, including Parkinson's disease (PD. The enzyme tyrosine hydroxylase (TH catalyzes the formation of L-DOPA, the rate-limiting step in the biosynthesis of dopamine. A lack of dopamine in the striatum is the most characteristic feature of PD, and the cause of the most dominant symptoms. Loss of function mutations in the PTEN-induced putative kinase (PINK1 gene cause autosomal recessive PD. This study explored the basic mechanisms underlying the involvement of pink1 in oxidative stress-mediated PD pathology using zebrafish as a tool. We generated a transgenic line, Tg(pink1:EGFP, and used it to study the effect of oxidative stress (exposure to H2O2 on pink1 expression. GFP expression was enhanced throughout the brain of zebrafish larvae subjected to oxidative stress. In addition to a widespread increase in pink1 mRNA expression, mild oxidative stress induced a clear decline in tyrosine hydroxylase 2 (th2, but not tyrosine hydroxylase 1 (th1 expression, in the brain of wild-type larvae. The drug L-Glutathione Reduced (LGR has been associated with anti-oxidative and possible neuroprotective properties. Administration of LGR normalized the increased fluorescence intensity indicating pink1 transgene expression and endogenous pink1 mRNA expression in larvae subjected to oxidative stress by H2O2. In the pink1 morpholino oliogonucleotide-injected larvae, the reduction in the expression of th1 and th2 was partially rescued by LGR. The pink1 gene is a sensitive marker of oxidative stress in zebrafish, and LGR effectively normalizes the consequences of mild oxidative stress, suggesting that the neuroprotective effects of pink1 and LGR may be significant and useful in drug development.

  4. Effects of Gamma Irradiation on Quality in the Processing of Low Salted and Fermented Shrimp

    International Nuclear Information System (INIS)

    Shin Myung-Gon; Lee Cherl-Ho

    2000-01-01

    Irradiation technology was applied to develop low salted and fermented shrimp that has better sensory quality and a longer shelf-life without any food additives. Different levels of salt (10, 15, and 20%, w/w) were added to the salted and fermented shrimp and the samples were irradiated at 0, 2.5, 5.0, 7.5, and 10.0 kGy with a gamma source (Co-60). Proximate composition, salinity, water activity (a), pH, total bacterial count, and general acceptance were analyzed during fermentation at 15 degrees after irradiation. The proximate analysis, salinity, and a were not affected by gamma irradiation during fermentation. However, pH and total bacteria, as well as sensory evaluation, were changed variously with processing conditions such as sodium chloride concentration and irradiation dose. The combinations of 15% salt concentration with 10 kGy irradiation dose and 20% with 5 kGy or above were effective for shelf-life enhancement of the salted and fermented shrimp by adequate suppression of microorganisms during fermentation at 15 degrees. The results showed that the sensory quality of the sample was maintained up to 10 weeks after fermentation. Therefore, it was considered that gamma irradiation was effective in processing low salted and fermented shrimp and extending their shelf-life without adding any food additives

  5. POTENCY OF VIBRIO ISOLATES FOR BIOCONTROL OF VIBRIOSIS IN TIGER SHRIMP (PENAEUS MONODON LARVAE

    Directory of Open Access Journals (Sweden)

    B. W. LAY

    2003-01-01

    Full Text Available This study was carried out to obtain Vibrio isolates able to function as biocontr ol of vibriosis in shrimp hatchery. Thirty one Vibrio isolates were isolated from tiger shrimp larvae and hatchery environments, i.e. Labuan, Pangandaran, and Lampung, Indonesia. Pathogenic V. harveyi MR5339 was obtained from Maros, South-Sulawesi and was made as a rifampicin resistant mutant (RFR to screen for those 31 Vibrio isolates in in vitro assays and to allow us to monitor their presence in shrimp larvae and larval rearing water. Almost all Vibrio isolates could inhibit the growth of pathogenic V. harveyi MR5339 RFR. SKT-b isolate from Skeletonema was the most effective to inhibit the growth of V. harveyi MR5339 Rf* and significantly reduced larval mortality in pathogen challenge assays. These prospective biocontrol bacteria, at concentration of 10" CFU/ml, did not show pathogenicity to shrimp larvae. SKT-b was Gram negative, short rod-shape, exhibited yellow colonies on TCBS and swarming on SWC-agar media, motile, u tilized glucose and sucrose but not lactose: produced extra-cellular protease and amylase, but did not produce chitmase. Partial sequencing of 16S-rRNA gene SKT-b showed SKT-b similarity to Vibrio alginofyticus.

  6. Is the Dutch shrimp fishery sustainable?

    NARCIS (Netherlands)

    Welleman, H.C.; Daan, N.

    2001-01-01

    The fishery of the brown shrimp (Crangon crangon LINNEAUS 1758) is a widespread human activity in the coastal zone. Yet management of this fishery has never been implemented. The question is raised whether an uncontrolled fishery is sustainable or the conceivable ecological stress results in

  7. CO₂ efflux from shrimp ponds in Indonesia.

    Science.gov (United States)

    Sidik, Frida; Lovelock, Catherine E

    2013-01-01

    The conversion of mangrove forest to aquaculture ponds has been increasing in recent decades. One of major concerns of this habitat loss is the release of stored 'blue' carbon from mangrove soils to the atmosphere. In this study, we assessed carbon dioxide (CO₂) efflux from soil in intensive shrimp ponds in Bali, Indonesia. We measured CO₂ efflux from the floors and walls of shrimp ponds. Rates of CO₂ efflux within shrimp ponds were 4.37 kg CO₂ m⁻² y⁻¹ from the walls and 1.60 kg CO₂ m⁻² y⁻¹ from the floors. Combining our findings with published data of aquaculture land use in Indonesia, we estimated that shrimp ponds in this region result in CO₂ emissions to the atmosphere between 5.76 and 13.95 Tg y⁻¹. The results indicate that conversion of mangrove forests to aquaculture ponds contributes to greenhouse gas emissions that are comparable to peat forest conversion to other land uses in Indonesia. Higher magnitudes of CO₂ emission may be released to atmosphere where ponds are constructed in newly cleared mangrove forests. This study indicates the need for incentives that can meet the target of aquaculture industry without expanding the converted mangrove areas, which will lead to increased CO₂ released to atmosphere.

  8. Solar Powered Automatic Shrimp Feeding System

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    Dindo T. Ani

    2015-12-01

    Full Text Available - Automatic system has brought many revolutions in the existing technologies. One among the technologies, which has greater developments, is the solar powered automatic shrimp feeding system. For instance, the solar power which is a renewable energy can be an alternative solution to energy crisis and basically reducing man power by using it in an automatic manner. The researchers believe an automatic shrimp feeding system may help solve problems on manual feeding operations. The project study aimed to design and develop a solar powered automatic shrimp feeding system. It specifically sought to prepare the design specifications of the project, to determine the methods of fabrication and assembly, and to test the response time of the automatic shrimp feeding system. The researchers designed and developed an automatic system which utilizes a 10 hour timer to be set in intervals preferred by the user and will undergo a continuous process. The magnetic contactor acts as a switch connected to the 10 hour timer which controls the activation or termination of electrical loads and powered by means of a solar panel outputting electrical power, and a rechargeable battery in electrical communication with the solar panel for storing the power. By undergoing through series of testing, the components of the modified system were proven functional and were operating within the desired output. It was recommended that the timer to be used should be tested to avoid malfunction and achieve the fully automatic system and that the system may be improved to handle changes in scope of the project.

  9. Neoliberalism and shrimp industry in Ecuador

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    Nadia Romero Salgado

    2014-04-01

    Full Text Available Analysis of the effects of the shrimp industry development in the mangrove ecosystem, the socio-environmental conflicts generated and its relationship with neoliberalism and the financial crisis of 1999 in Ecuador. After a review of the importance of the mangrove ecosystem, the stages of the shrimp expansion, its promoters, the mangrove deforestation and the socio-environmental effects caused, I will analyze the shrimp crisis, its parallels with the financial crisis of 1999 and its subsequent recovery. I will show that the shrimp industry expanded in mangrove areas in order to reduce costs, even breaking the law and creating environmental degradation, vulnerability of the costs and loss of natural resources, based on the exploitation and privatization of a public good. This created unemployment, migration and impoverishment to local populations and costs that the State will have to assume. Therefore, it is a process of “accumulation by dispossession” characteristic of neoliberalism.

  10. Cobalt-60 gamma irradiation of shrimp

    International Nuclear Information System (INIS)

    Sullivan, N.L.B.

    1993-01-01

    Meta- and ortho-tyrosine were measured using high performance liquid chromatography (HPLC) in conjunction with electrochemical detection in shrimp irradiated using cobalt-60 gamma radiation in the absorbed dose range 0.8 to 6.0 kGy, in nonirradiated shrimp, and in bovine serum albumin (BSA) irradiated in dilute aqueous solution at 25.0 kGy. Ortho-tyrosine was measured in nonirradiated BSA. Para-, meta-, and ortho-tyrosine was measured using HPLC in conjunction with uv-absorption detection in dilute aqueous solutions of phenylalanine irradiated in the absorbed dose range 16.0 to 195.0 kGy. The measured yields of tyrosine isomers were approximately linear as a function of absorbed dose in shrimp, and in irradiated solutions of phenylalanine up to 37.0 kGy. The occurrence of meta- and ortho-tyrosine, which had formerly been considered unique radiolytic products, has not previously been reported in nonirradiated shrimp or BSA. The conventional hydrolyzation and analytical techniques used in the present study to measure meta- and ortho-tyrosine may provide the basis for a method to detect and determine the dose used in food irradiation

  11. CO₂ efflux from shrimp ponds in Indonesia.

    Directory of Open Access Journals (Sweden)

    Frida Sidik

    Full Text Available The conversion of mangrove forest to aquaculture ponds has been increasing in recent decades. One of major concerns of this habitat loss is the release of stored 'blue' carbon from mangrove soils to the atmosphere. In this study, we assessed carbon dioxide (CO₂ efflux from soil in intensive shrimp ponds in Bali, Indonesia. We measured CO₂ efflux from the floors and walls of shrimp ponds. Rates of CO₂ efflux within shrimp ponds were 4.37 kg CO₂ m⁻² y⁻¹ from the walls and 1.60 kg CO₂ m⁻² y⁻¹ from the floors. Combining our findings with published data of aquaculture land use in Indonesia, we estimated that shrimp ponds in this region result in CO₂ emissions to the atmosphere between 5.76 and 13.95 Tg y⁻¹. The results indicate that conversion of mangrove forests to aquaculture ponds contributes to greenhouse gas emissions that are comparable to peat forest conversion to other land uses in Indonesia. Higher magnitudes of CO₂ emission may be released to atmosphere where ponds are constructed in newly cleared mangrove forests. This study indicates the need for incentives that can meet the target of aquaculture industry without expanding the converted mangrove areas, which will lead to increased CO₂ released to atmosphere.

  12. Composition of the Essential Oil of Pink Chablis Bluebeard (Caryopteris x clandonensis ’Durio’) and Its Biological Activity against the Yellow Fever Mosquito Aedes aegypti

    Science.gov (United States)

    2016-04-07

    oil of Pink Chablis™ bluebeard (Caryopteris ×clandonensis ’Durio’) and its biological activity against the yellow fever mosquito Aedes aegypti ARTICLE...bluebeard (Caryopteris ×clandonensis ’Durio’) and its biological activity against the yellow fever mosquito Aedes aegypti Eugene K. Blythe1...mosquito [ Aedes aegypti (L.) (Diptera: Culicidae)]. Essential oil from the aerial parts of this mildly aromatic ornamental species was extracted by water

  13. Key Performance Characteristics of Organic Shrimp Aquaculture in Southwest Bangladesh

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    Christian Reinhard Vogl

    2012-05-01

    Full Text Available In Bangladesh, black tiger shrimp (Penaeus monodon; Fabricius, 1798 aquaculture has come to be one of the most important sectors in both the rural and national economies. Likewise, organic shrimp aquaculture has emerged as an alternative farming enterprise for farmers especially in the southwestern districts of Bangladesh. The present study aims to show key performance characteristics of organic shrimp farmers and farming in a prototypical shrimp farming area in Bangladesh. Data was collected in 2009 from organic shrimp farmers in the Kaligonj and Shyamnagar sub-districts through questionnaire interviews, transect walks and focus group discussions. The mean productivity of organic shrimp farming in the area is 320 kg ha−1 yr−1 (ranging from 120 to 711 kg ha−1year−1. Organic farmers are more likely to have a higher monthly income and less aquaculture experience. Moreover, suitable landholdings and classified labor distribution have been found to play an important role in the development of organic shrimp aquaculture. The most common assets of organic shrimp aquaculture are high yield, low production cost, available post larvae and high market prices. Small business farmers are likely to earn more income benefits from organic shrimp aquaculture than their larger-scale counterparts. Finally, the paper suggests that more research is needed to stimulate the success of organic shrimp aquaculture.

  14. The EDTA effect on phytoextraction of single and combined metals-contaminated soils using rainbow pink (Dianthus chinensis).

    Science.gov (United States)

    Lai, Hung-Yu; Chen, Zueng-Sang

    2005-08-01

    Rainbow pink (Dianthus chinensis), a potential phytoextraction plant, can accumulate high concentrations of Cd from metal-contaminated soils. The soils used in this study were artificially added with different metals including (1) CK: original soil, (2) Cd-treated soil: 10 mg Cd kg(-1), (3) Zn-treated soil: 100 mg Zn kg(-1), (4) Pb-treated soil: 1000 mg Pb kg(-1), (5) Cd-Zn-treated soil: 10 mg Cd kg(-1) and 100 mg Zn kg(-1), (6) Cd-Pb-treated soil: 10 mg Cd kg(-1) and 1000 mg Pb kg(-1), (7) Zn-Pb-treated soil: 100 mg Zn kg(-1) and 1000 mg Pb kg(-1), and (8) Cd-Zn-Pb-treated soil: 10 mg Cd kg(-1), 100 mg Zn kg(-1), and 1000 mg Pb kg(-1). Three concentrations of 2Na-EDTA solutions (0 (control), 2, and 5 mmol kg(-1) soil) were added to the different metals-treated soils to study the influence of applied EDTA on single and combined metals-contaminated soils phytoextraction using rainbow pink. The results showed that the Cd, Zn, Pb, Fe, or Mn concentrations in different metals-treated soil solutions significantly increased after applying 5 mmol EDTA kg(-1) (p<0.05). The metal concentrations in different metals-treated soils extracted by deionized water also significantly increased after applying 5 mmol EDTA kg(-1) (p<0.05). Because of the high extraction capacity of both 0.005 M DTPA (pH 5.3) and 0.05 M EDTA (pH 7.0), applying EDTA did not significantly increase the Cd, Zn, or Pb concentration in both extracts for most of the treatments. Applying EDTA solutions can significantly increase the Cd and Pb concentrations in the shoots of rainbow pink (p<0.05). However, this was not statistically significant for Zn because of the low Zn concentration added into the contaminated soils. The results from this study indicate that applying 5 mmol EDTA kg(-1) can significantly increase the Cd, Zn, or Pb concentrations both in the soil solution or extracted using deionized water in single or combined metals-contaminated soils, thus increasing the accumulated metals concentrations in

  15. Hard X-ray emission spectroscopy with pink beam

    Energy Technology Data Exchange (ETDEWEB)

    Kvashnina, Kristina O.; Rossberg, Andre; Exner, Joerg; Scheinost, Andreas C. [Helmholtz-Zentrum Dresden-Rossendorf e.V., Dresden (Germany). Molecular Structures

    2017-06-01

    Valence-band X-ray emission spectroscopy (XES) with a ''pink beam'', i.e. a beam with large energy bandwidth produced by a double-multilayer monochromator, is introduced here to overcome the weak count rate of monochromatic beams produced by conventional double-crystal monochromators. Our results demonstrate that - in spite of the large bandwidth in the order of 100 eV - the high spectral resolution of the Johann-type spectrometer is maintained, while the two orders of magnitude higher flux greatly reduces the required counting time. The short working distance Johann-type X-ray emission spectrometer and multilayer monochromator is available at ROBL.

  16. You say "lean finely textured beef," I say "pink slime".

    Science.gov (United States)

    Reid, Rita-Marie Cain

    2014-01-01

    In 2012, American Broadcasting Companies, Inc. (ABC) broadcast a segment on its evening news show regarding the manufacture of "lean finely textured beef" by Beef Products, Inc. (BPI). The broadcast, as well as follow-up reports and social media communications, repeatedly referred to the product as "pink slime," a term originated by a United States Department of Agriculture (USDA) employee for the processed meat. The market backlash against the product was immediate and intense. Ultimately, BPI closed three processing plants, cut hundreds of jobs, and filed for bankruptcy. BPI sued ABC and others for food libel, defamation, and tortious interference. This research analyzes those claims and defenses and discusses the future of such cases.

  17. Pink esthetics in periodontics - Gingival depigmentation: A case series

    Directory of Open Access Journals (Sweden)

    Arthiie Thangavelu

    2012-01-01

    Full Text Available Smile expresses a feeling of joy, success, sensuality, affection, and courtesy, and reveals self-confidence and kindness. The harmony of the smile is determined not only by the shape, the position, and the color of the teeth, but also by the gingival tissues. Although melanin pigmentation of the gingiva is completely benign and does not present a medical problem, complaints of "black gums" are common, particularly in patients having a very high smile line. Thus, perio-esthetic treatment modalities strive to achieve a harmonious inter-relationship of the pink with white, which is imperative of all treatment procedures. For depigmentation of gingival, different treatment modalities have been reported, such as bur abrasion, scraping, partial thickness flap, cryotherapy, electrosurgery, and laser. In the present case series, scraping, electrosurgery, and diode laser have been tried for depigmentation, which are simple, effective, and yield good results, along with good patient satisfaction.

  18. Pink-color sign in esophageal squamous neoplasia, and speculation regarding the underlying mechanism

    Science.gov (United States)

    Ishihara, Ryu; Kanzaki, Hiromitsu; Iishi, Hiroyasu; Nagai, Kengo; Matsui, Fumi; Yamashina, Takeshi; Matsuura, Noriko; Ito, Takashi; Fujii, Mototsugu; Yamamoto, Sachiko; Hanaoka, Noboru; Takeuchi, Yoji; Higashino, Koji; Uedo, Noriya; Tatsuta, Masaharu; Tomita, Yasuhiko; Ishiguro, Shingo

    2013-01-01

    AIM: To investigate the reasons for the occurrence of the pink-color sign of iodine-unstained lesions. METHODS: In chromoendoscopy, the pink-color sign of iodine-unstained lesions is recognized as useful for the diagnosis of esophageal squamous cell carcinoma. Patients with superficial esophageal neoplasms treated by endoscopic resection were included in the study. Areas of mucosa with and without the pink-color sign were evaluated histologically. The following histologic features that were possibly associated with the pink-color sign were evaluated. The keratinous layer and basal cell layer were classified as present or absent. Cellular atypia was classified as high grade, moderate grade or low grade, based on nuclear irregularity, mitotic figures, loss of polarity, chromatin pattern and nuclear/cytoplasmic ratio. Vascular change was assessed based on dilatation, tortuosity, caliber change and variability in shape. Vessels with these four findings were classified as positive for vascular change. Endoscopic images of the lesions were captured immediately after iodine staining, 2-3 min after iodine staining and after complete fading of iodine staining. Quantitative analysis of color changes after iodine staining was also performed. RESULTS: A total of 61 superficial esophageal neoplasms in 54 patients were included in the study. The lesions were located in the cervical esophagus in one case, the upper thoracic esophagus in 10 cases, the mid-thoracic esophagus in 33 cases, and the lower thoracic esophagus in 17 cases. The median diameter of the lesions was 20 mm (range: 2-74 mm). Of the 61 lesions, 28 were classified as pink-color sign positive and 33 as pink-color sign negative. The histologic diagnosis was high-grade intraepithelial neoplasia (HGIN) or cancer invading into the lamina propria in 26 of the 28 pink-color sign positive lesions. There was a significant association between pink-color sign positive epithelium and HGIN or invasive cancer (P = 0

  19. Macroalgal bioindicators (growth, tissue N, δ15N) detect nutrient enrichment from shrimp farm effluent entering Opunohu Bay, Moorea, French Polynesia

    International Nuclear Information System (INIS)

    Lin, David T.; Fong, Peggy

    2008-01-01

    Nutrient enrichment from shrimp aquaculture poses an increasing environmental threat due to the industry's projected rapid growth and unsustainable management practices. Traditional methods to monitor impacts emphasize water quality sampling; however, there are many advantages to bioindicators, especially in developing countries. We investigated the usefulness of three bioindicators-growth, tissue nitrogen content and nitrogen stable isotope signature (δ 15 N)-in the tropical red macroalga Acanthophora spicifera. Algae were collected, cultured, and deployed in a spatial array around the outflow from a shrimp farm in Moorea, French Polynesia, to detect nitrogenous wastes. All three parameters were highest adjacent to the shrimp farm indicating nutrient enrichment, and δ 15 N values confirmed the shrimp farm as the dominant nutrient source (5.63-5.96 per mille ). Isotope ratios proved the most sensitive indicator, as δ 15 N signatures were detected at the most distant sites tested, confirming their usefulness in tracing nutrients and mapping the spatial extent of enrichment

  20. Lead (Pb) induced ATM-dependent mitophagy via PINK1/Parkin pathway.

    Science.gov (United States)

    Gu, Xueyan; Qi, Yongmei; Feng, Zengxiu; Ma, Lin; Gao, Ke; Zhang, Yingmei

    2018-07-01

    Lead (Pb), a widely distributed environmental pollutant, is known to induce mitochondrial damage as well as autophagy in vitro and in vivo. In this study, we found that Pb could trigger mitophagy in both HEK293 cells and the kidney cortex of male Kunming mice. However, whether ataxia telangiectasis mutated (ATM) which is reported to be linked with PTEN-induced putative kinase 1 (PINK1)/Parkin pathway (a well-characterized mitophagic pathway) participates in the regulation of Pb-induced mitophagy and its exact role remains enigmatic. Our results indicated that Pb activated ATM in vitro and in vivo, and further in vitro studies showed that ATM could co-localize with PINK1 and Parkin in cytosol and interact with PINK1. Knockdown of ATM by siRNA blocked Pb-induced mitophagy even under the circumstance of enhanced accumulation of PINK1 and mitochondrial Parkin. Intriguingly, elevation instead of reduction in phosphorylation level of PINK1 and Parkin was observed in response to ATM knockdown and Pb did not contribute to the further increase of their phosphorylation level, implying that ATM indirectly regulated PINK1/Parkin pathway. These findings reveal a novel mechanism for Pb toxicity and suggest the regulatory importance of ATM in PINK1/Parkin-mediated mitophagy. Copyright © 2018 Elsevier B.V. All rights reserved.

  1. Predicted sub-populations in a marine shrimp proteome as revealed by combined EST and cDNA data from multiple Penaeus species

    Directory of Open Access Journals (Sweden)

    Kotewong Rattanawadee

    2010-11-01

    Full Text Available Abstract Background Many species of marine shrimp in the Family Penaeidae, viz. Penaeus (Litopenaeus vannamei, Penaeus monodon, Penaeus (Fenneropenaeus chinensis, and Penaeus (Marsupenaeus japonicus, are animals of economic importance in the aquaculture industry. Yet information about their DNA and protein sequences is lacking. In order to predict their collective proteome, we combined over 270,000 available EST and cDNA sequences from the 4 shrimp species with all protein sequences of Drosophila melanogaster and Caenorhabditis elegans. EST data from 4 other crustaceans, the crab Carcinus maenas, the lobster Homarus americanus (Decapoda, the water flea Daphnia pulex, and the brine shrimp Artemia franciscana were also used. Findings Similarity searches from EST collections of the 4 shrimp species matched 64% of the protein sequences of the fruit fly, but only 45% of nematode proteins, indicating that the shrimp proteome content is more similar to that of an insect than a nematode. Combined results with 4 additional non-shrimp crustaceans increased matching to 78% of fruit fly and 56% of nematode proteins, suggesting that present shrimp EST collections still lack sequences for many conserved crustacean proteins. Analysis of matching data revealed the presence of 4 EST groups from shrimp, namely sequences for proteins that are both fruit fly-like and nematode-like, fruit fly-like only, nematode-like only, and non-matching. Gene ontology profiles of proteins for the 3 matching EST groups were analyzed. For non-matching ESTs, a small fraction matched protein sequences from other species in the UniProt database, including other crustacean-specific proteins. Conclusions Shrimp ESTs indicated that the shrimp proteome is comprised of sub-populations of proteins similar to those common to both insect and nematode models, those present specifically in either model, or neither. Combining small EST collections from related species to compensate for their

  2. A Bio-economic Model of a Shrimp Hatchery in the Mekong River Delta of Vietnam

    OpenAIRE

    Sinh, L.X.; MacAulay, T. Gordon; Brennan, Donna C.

    2003-01-01

    Shrimp culture areas and production of the Mekong Delta cover about 60 percent of the total shrimp areas and production of Vietnam. Especially, the Delta contributes about 80 percent of the total shrimp production for export. Rapid development of the shrimp industry is raising a number of serious problems that need to be solved. Shrimp seed supply (post larvae production) plays an essential role in the shrimp industry and it is one of the most important constraints to the development of the s...

  3. Novel P-TEN-induced putative kinase 1 (PINK1) variant in Indian Parkinson's disease patient.

    Science.gov (United States)

    Halder, Tamali; Raj, Janak; Sharma, Vivek; Das, Parimal

    2015-09-25

    Loss-of-function mutation in PINK1 is known for causing autosomal recessive early onset Parkinsonism accounting approximately 6.5% of PD cases. Recently, PINK1 has also been shown to cause Parkinson's disease (PD) in eastern India. Present study is aimed to see its contribution in north-Indian PD patients. A total of 106 PD patients and 60 ethnically matched healthy controls were included in the study. All the patients were screened for mutation in PINK1 by direct DNA sequence analysis of the PCR amplicons covering all exons and exon-intron boundaries. Identified novel variant was reconfirmed by DNA sequencing of 10 randomly selected TA clones containing the variant amplicon. In vitro functional assay of the mutant protein was performed by transfecting COS-7 cell line with wild type and mutant (created by site-directed-mutagenesis) cDNA construct of PINK1 fused to N' terminal GFP followed by western blot analysis. Two potentially pathogenic, one being novel (p.Q267X) and 6 other apparently non-pathogenic variants were identified. Western blot analysis reveals production of truncated PINK1 fusion protein of ∼55kDa in p.Q267X mutant instead of 82/93kDa of wild type PINK1 fusion protein (molecular weight of GFP is ∼27kDa). Our study concludes that PINK1 variants are prevalent for causing Parkinson's disease (PD) in India, as revealed by the occurrence of 1.8% (2/106) in PD patients from north Indian population. The novel homozygous variant of PINK1 (c.799C>T) reported here is the plausible cause for disease manifestation in this patient. Future study, however, would be helpful to understand the functional mechanism how this premature PINK1 protein (p.Q267X) responds to cellular stress leading to the PD pathophysiology. Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.

  4. Clueless, a protein required for mitochondrial function, interacts with the PINK1-Parkin complex in Drosophila

    Directory of Open Access Journals (Sweden)

    Aditya Sen

    2015-06-01

    Full Text Available Loss of mitochondrial function often leads to neurodegeneration and is thought to be one of the underlying causes of neurodegenerative diseases such as Parkinson's disease (PD. However, the precise events linking mitochondrial dysfunction to neuronal death remain elusive. PTEN-induced putative kinase 1 (PINK1 and Parkin (Park, either of which, when mutated, are responsible for early-onset PD, mark individual mitochondria for destruction at the mitochondrial outer membrane. The specific molecular pathways that regulate signaling between the nucleus and mitochondria to sense mitochondrial dysfunction under normal physiological conditions are not well understood. Here, we show that Drosophila Clueless (Clu, a highly conserved protein required for normal mitochondrial function, can associate with Translocase of the outer membrane (TOM 20, Porin and PINK1, and is thus located at the mitochondrial outer membrane. Previously, we found that clu genetically interacts with park in Drosophila female germ cells. Here, we show that clu also genetically interacts with PINK1, and our epistasis analysis places clu downstream of PINK1 and upstream of park. In addition, Clu forms a complex with PINK1 and Park, further supporting that Clu links mitochondrial function with the PINK1-Park pathway. Lack of Clu causes PINK1 and Park to interact with each other, and clu mutants have decreased mitochondrial protein levels, suggesting that Clu can act as a negative regulator of the PINK1-Park pathway. Taken together, these results suggest that Clu directly modulates mitochondrial function, and that Clu's function contributes to the PINK1-Park pathway of mitochondrial quality control.

  5. PINK1 is required for timely cell-type specific mitochondrial clearance during Drosophila midgut metamorphosis.

    Science.gov (United States)

    Liu, Yan; Lin, Jingjing; Zhang, Minjie; Chen, Kai; Yang, Shengxi; Wang, Qun; Yang, Hongqin; Xie, Shusen; Zhou, Yongjian; Zhang, Xi; Chen, Fei; Yang, Yufeng

    2016-11-15

    Mitophagy is the selective degradation of mitochondria by autophagy, which is an important mitochondrial quality and quantity control process. During Drosophila metamorphosis, the degradation of midgut involves a large change in length and organization, which is mediated by autophagy. Here we noticed a cell-type specific mitochondrial clearance process that occurs in enterocytes (ECs), while most mitochondria remain in intestinal stem cells (ISCs) during metamorphosis. Although PINK1/PARKIN represent the canonical pathway for the elimination of impaired mitochondria in varied pathological conditions, their roles in developmental processes or normal physiological conditions have been less studied. To examine the potential contribution of PINK1 in developmental processes, we monitored the dynamic expression pattern of PINK1 in the midgut development by taking advantage of a newly CRISPR/Cas9 generated knock-in fly strain expressing PINK1-mCherry fusion protein that presumably recapitulates the endogenous expression pattern of PINK1. We disclosed a spatiotemporal correlation between the expression pattern of PINK1 and the mitochondrial clearance or persistence in ECs or ISCs respectively. By mosaic genetic analysis, we then demonstrated that PINK1 and PARKIN function epistatically to mediate the specific timely removal of mitochondria, and are involved in global autophagy in ECs during Drosophila midgut metamorphosis, with kinase-dead PINK1 exerting dominant negative effects. Taken together, our studies concluded that the PINK1/PARKIN is crucial for timely cell-type specific mitophagy under physiological conditions and demonstrated again that Drosophila midgut metamorphosis might serve as an elegant in vivo model to study autophagy. Copyright © 2016 Elsevier Inc. All rights reserved.

  6. Evaluation of Pacific white shrimp (Litopenaeus vannamei health during a superintensive aquaculture growout using NMR-based metabolomics.

    Directory of Open Access Journals (Sweden)

    Tracey B Schock

    Full Text Available Success of the shrimp aquaculture industry requires technological advances that increase production and environmental sustainability. Indoor, superintensive, aquaculture systems are being developed that permit year-round production of farmed shrimp at high densities. These systems are intended to overcome problems of disease susceptibility and of water quality issues from waste products, by operating as essentially closed systems that promote beneficial microbial communities (biofloc. The resulting biofloc can assimilate and detoxify wastes, may provide nutrition for the farmed organisms resulting in improved growth, and may aid in reducing disease initiated from external sources. Nuclear magnetic resonance (NMR-based metabolomic techniques were used to assess shrimp health during a full growout cycle from the nursery phase through harvest in a minimal-exchange, superintensive, biofloc system. Aberrant shrimp metabolomes were detected from a spike in total ammonia nitrogen in the nursery, from a reduced feeding period that was a consequence of surface scum build-up in the raceway, and from the stocking transition from the nursery to the growout raceway. The biochemical changes in the shrimp that were induced by the stressors were essential for survival and included nitrogen detoxification and energy conservation mechanisms. Inosine and trehalose may be general biomarkers of stress in Litopenaeus vannamei. This study demonstrates one aspect of the practicality of using NMR-based metabolomics to enhance the aquaculture industry by providing physiological insight into common environmental stresses that may limit growth or better explain reduced survival and production.

  7. Evaluation of Pacific White Shrimp (Litopenaeus vannamei) Health during a Superintensive Aquaculture Growout Using NMR-Based Metabolomics

    Science.gov (United States)

    Schock, Tracey B.; Duke, Jessica; Goodson, Abby; Weldon, Daryl; Brunson, Jeff; Leffler, John W.; Bearden, Daniel W.

    2013-01-01

    Success of the shrimp aquaculture industry requires technological advances that increase production and environmental sustainability. Indoor, superintensive, aquaculture systems are being developed that permit year-round production of farmed shrimp at high densities. These systems are intended to overcome problems of disease susceptibility and of water quality issues from waste products, by operating as essentially closed systems that promote beneficial microbial communities (biofloc). The resulting biofloc can assimilate and detoxify wastes, may provide nutrition for the farmed organisms resulting in improved growth, and may aid in reducing disease initiated from external sources. Nuclear magnetic resonance (NMR)-based metabolomic techniques were used to assess shrimp health during a full growout cycle from the nursery phase through harvest in a minimal-exchange, superintensive, biofloc system. Aberrant shrimp metabolomes were detected from a spike in total ammonia nitrogen in the nursery, from a reduced feeding period that was a consequence of surface scum build-up in the raceway, and from the stocking transition from the nursery to the growout raceway. The biochemical changes in the shrimp that were induced by the stressors were essential for survival and included nitrogen detoxification and energy conservation mechanisms. Inosine and trehalose may be general biomarkers of stress in Litopenaeus vannamei. This study demonstrates one aspect of the practicality of using NMR-based metabolomics to enhance the aquaculture industry by providing physiological insight into common environmental stresses that may limit growth or better explain reduced survival and production. PMID:23555690

  8. The effect of phytase levels in the diet on the digestibility and growth performance of white shrimp Litopenaeus vannamei

    Directory of Open Access Journals (Sweden)

    Muhammmad Agus Suprayudi

    2013-11-01

    Full Text Available This experiment was conducted to evaluate the effect of phytase levels in the diet on the digestibility and growth performance of white shrimp Litopenaeus vanname. White shrimp were used in the trial with initial body weight of 3.8±0.01 g were reared in  aquarium (60×40×50 cm3 and filled with 60L treated sea water at a density of ten individu. Experimental diet were formulated in isonitrogeneous (36% protein and isocaloric (3960 kcal/kg to contain four levels of phytase: 0 iu/kg (diet A, 500 iu/kg (diet B, 750 iu/kg (diet C, and 1000 iu/kg(diet D. All diets were supplied with 0.5% of Cr2O3 as an indicator for digestibility measurement shrimp fed three times daily at satiation levelfor how many days of rearing. A factorial completely randomized experimental design was selected consisted of four treatments and triplicates. The result showed that the phytase addition improved the digestibility of protein, calcium, and phosphor as well as improve growth performance of white shrimp. Based on evaluation of those parameters, it is concluded that phytase level of500 IU support the best growth performance ofjuvenile white shrimp. Keywords: phytase, feed digestibility, growth,Litopenaeus vannamei

  9. Relative importance of dissolved and food pathways for lead contamination in shrimp

    International Nuclear Information System (INIS)

    Boisson, F.; Cotret, O.; Teyssie, J.-L.; El-Baradeie, M.; Fowler, S.W.

    2003-01-01

    The relative importance of dissolved and food pathways and the influence of food type in the bioaccumulation and retention of lead in the shrimp Palaemonetes varians were examined using a radiotracer method. Shrimp were exposed to 210 Pb-labelled seawater or fed two types of 210 Pb-labelled food, viz. mussels or worms. The amount of radiotracer accumulated by shrimp was examined over a 7-day period, followed by a 1-month and a 7-day depuration period for the dissolved and food source, respectively. Steady state in the uptake was reached after 2 days exposure to dissolved lead, with a resultant estimated concentration factor of 98 ± 3. Transfer factors following ingestion of contaminated mussels and worms were lower than unity for both food types, with lead transfer from worms being significantly higher than that from mussels. Accumulation of dissolved Pb by shrimp was found to occur mainly through adsorption on the exoskeleton with a minor accumulation in the internal tissues probably resulting from the intake of seawater for osmoregulation. In contrast, lead taken up from contaminated food was readily absorbed and bound in the internal tissues of P. varians. Although the transfer of lead to P. varians through the ingestion of contaminated food was low (TF < 1%), it still represented 4 to 8% of the lead content in the prey which is a significant additional contribution of lead to the shrimp body burden. Independent of food type, following ingestion of contaminated food, approximately 23-27% of total lead accumulated in shrimp was located in the edible parts (e.g. muscle). Therefore, the food pathway is suggested to be a significant contributor to the lead transfer to humans through ingestion of contaminated shrimp. After exposure to contaminated food, lead loss kinetics were described by a two-component model, whereas Pb loss following direct uptake from seawater was best described by a three-component model. The additional compartment representing 64% of total Pb

  10. Relative importance of dissolved and food pathways for lead contamination in shrimp

    Energy Technology Data Exchange (ETDEWEB)

    Boisson, F.; Cotret, O.; Teyssie, J.-L.; El-Baradeie, M.; Fowler, S.W

    2003-12-01

    The relative importance of dissolved and food pathways and the influence of food type in the bioaccumulation and retention of lead in the shrimp Palaemonetes varians were examined using a radiotracer method. Shrimp were exposed to {sup 210}Pb-labelled seawater or fed two types of {sup 210}Pb-labelled food, viz. mussels or worms. The amount of radiotracer accumulated by shrimp was examined over a 7-day period, followed by a 1-month and a 7-day depuration period for the dissolved and food source, respectively. Steady state in the uptake was reached after 2 days exposure to dissolved lead, with a resultant estimated concentration factor of 98 {+-} 3. Transfer factors following ingestion of contaminated mussels and worms were lower than unity for both food types, with lead transfer from worms being significantly higher than that from mussels. Accumulation of dissolved Pb by shrimp was found to occur mainly through adsorption on the exoskeleton with a minor accumulation in the internal tissues probably resulting from the intake of seawater for osmoregulation. In contrast, lead taken up from contaminated food was readily absorbed and bound in the internal tissues of P. varians. Although the transfer of lead to P. varians through the ingestion of contaminated food was low (TF < 1%), it still represented 4 to 8% of the lead content in the prey which is a significant additional contribution of lead to the shrimp body burden. Independent of food type, following ingestion of contaminated food, approximately 23-27% of total lead accumulated in shrimp was located in the edible parts (e.g. muscle). Therefore, the food pathway is suggested to be a significant contributor to the lead transfer to humans through ingestion of contaminated shrimp. After exposure to contaminated food, lead loss kinetics were described by a two-component model, whereas Pb loss following direct uptake from seawater was best described by a three-component model. The additional compartment representing 64

  11. Snapping shrimp sound production patterns on Caribbean coral reefs: relationships with celestial cycles and environmental variables

    Science.gov (United States)

    Lillis, Ashlee; Mooney, T. Aran

    2018-06-01

    The rich acoustic environment of coral reefs, including the sounds of a variety of fish and invertebrates, is a reflection of the structural complexity and biological diversity of these habitats. Emerging interest in applying passive acoustic monitoring and soundscape analysis to measure coral reef habitat characteristics and track ecological patterns is hindered by a poor understanding of the most common and abundant sound producers on reefs—the snapping shrimp. Here, we sought to address several basic biophysical drivers of reef sound by investigating acoustic activity patterns of snapping shrimp populations on two adjacent coral reefs using a detailed snap detection analysis routine to a high-resolution 2.5-month acoustic dataset from the US Virgin Islands. The reefs exhibited strong diel and lunar periodicity in snap rates and clear spatial differences in snapping levels. Snap rates peaked at dawn and dusk and were higher overall during daytime versus nighttime, a seldom-reported pattern in earlier descriptions of diel snapping shrimp acoustic activity. Small differences between the sites in snap rate rhythms were detected and illustrate how analyses of specific soundscape elements might reveal subtle between-reef variation. Snap rates were highly correlated with environmental variables, including water temperature and light, and were found to be sensitive to changes in oceanographic forcing. This study further establishes snapping shrimp as key players in the coral reef chorus and provides evidence that their acoustic output reflects a combination of environmental conditions, celestial influences, and spatial habitat variation. Effective application of passive acoustic monitoring in coral reef habitats using snap rates or snapping-influenced acoustic metrics will require a mechanistic understanding of the underlying spatial and temporal variation in snapping shrimp sound production across multiple scales.

  12. The impact of shrimp farming on mangrove ecosystems

    DEFF Research Database (Denmark)

    Ashton, Elizabeth Clare

    2008-01-01

    . Policy to position shrimp farms behind mangroves can be effective but also requires good institutional capacity and coordination, effective enforcement, incentives, land tenure and participation of all stakeholders for success. Better management practices have been identified which reduce impacts......Farmed shrimp production and value continue to increase with Asia producing the global majority of shrimp and the USA, Japan and Europe being the main importers. Shrimp farming systems are very diverse in their management, size and impacts. There are many causes for mangrove loss but the conversion...... of mangroves to shrimp farms has caused considerable attention. The major issues of shrimp farming include the loss of important ecological and socio-economic functions of mangrove ecosystems, changes in hydrology, salinization, introduction of non-native species and diseases, pollution from effluents...

  13. Replacing of live food with artificial diet on growth and survival rates of white leg shrimp (Litopenaeus vannamei) larvae

    OpenAIRE

    Ghorbani Vagheie, R.; Matinfar, A.; Aeinjamshid, Kh.; Hafezieh, M.; Ghorbani, R.

    2011-01-01

    Replacing live food with artificial diets in aquatic larviculture, especially in shrimp larvae not only is caused convenience feeding, but also in economical view is very important. With this object, in this survey, a density of 100.L -1 white leg shrimp larvae in 9 nutritional treatments each with three replicates were cultured in 20L tanks each one was held with 10L of 30% salty water using one air stone. The larvae were fed 4 times.day-1 with different diets, including live foods (Cheatoce...

  14. PINK1 positively regulates IL-1β-mediated signaling through Tollip and IRAK1 modulation

    Directory of Open Access Journals (Sweden)

    Lee Hyun Jung

    2012-12-01

    Full Text Available Abstract Background Parkinson disease (PD is characterized by a slow, progressive degeneration of dopaminergic neurons in the substantianigra. The cause of neuronal loss in PD is not well understood, but several genetic loci, including PTEN-induced putative kinase 1 (PINK1, have been linked to early-onset autosomal recessive forms of familial PD. Neuroinflammation greatly contributes to PD neuronal degeneration and pathogenesis. IL-1 is one of the principal cytokines that regulates various immune and inflammatory responses via the activation of the transcription factors NF-κB and activating protein-1. Despite the close relationship between PD and neuroinflammation, the functional roles of PD-linked genes during inflammatory processes remain poorly understood. Methods To explore the functional roles of PINK1 in response to IL-1β stimulation, HEK293 cells, mouse embryonic fibroblasts derived from PINK1-null (PINK1−/− and control (PINK1+/+ mice, and 293 IL-1RI cells stably expressing type 1 IL-1 receptor were used. Immunoprecipitation and western blot analysis were performed to detect protein–protein interaction and protein ubiquitination. To confirm the effect of PINK1 on NF-κB activation, NF-κB-dependent firefly luciferase reporter assay was conducted. Results PINK1 specifically binds two components of the IL-1-mediated signaling cascade, Toll-interacting protein (Tollip and IL-1 receptor-associated kinase 1 (IRAK1. The association of PINK1 with Tollip, a negative regulator of IL-1β signaling, increases upon IL-1β stimulation, which then facilitates the dissociation of Tollip from IRAK1 as well as the assembly of the IRAK1–TNF receptor-associated factor 6 (TRAF6 complex. PINK1 also enhances Lys63-linked polyubiquitination of IRAK1, an essential modification of recruitment of NF-κB essential modulator and subsequent IκB kinase activation, and increases formation of the intermediate signalosome including IRAK1, TRAF6, and

  15. Genomic variants at the PINK1 locus are associated with transcript abundance and plasma nonesterified fatty acid concentrations in European whites

    DEFF Research Database (Denmark)

    Franks, P.W.; Scheele, C.; Loos, R.J.

    2008-01-01

    these were not statistically significant after correcting for multiple testing. In primary adipocytes, Pink1 knockdown affected fatty acid binding protein 4 (Fabp4) expression, indicating that PINK1 may influence substrate metabolism. We demonstrate that PINK1 polymorphisms are associated with PINK1...

  16. A study of zinc toxicity for the shrimp Palaemon Serratus Pennant

    International Nuclear Information System (INIS)

    Fraizier, A.

    1973-01-01

    An experimental pollution of shrimps by stable zinc (ZnCl 2 ) during 30 d. allowed to determine the lowest amount (1 mg/l) in sea water leading to high lethality. The kinetics of Zn uptake were studied using 65 Zn. Zn retention seemed to result mainly from adsorption processes and acute pathological effects from flocculation of the branchial mucus leading to death by asphyxiation [fr

  17. Immobilized periphytic cyanobacteria for removal of nitrogenous compounds and phosphorus from shrimp farm wastewater

    OpenAIRE

    BANERJEE, SANJOY; KHATOON, HELENA; SHARIFF, MOHAMED; YUSOFF, FATIMAH

    2015-01-01

    Cyanobacteria can be used to remove nitrogenous compounds from wastewater, but a major bottleneck in the process is the separation of cyanobacterial biomass from the treated water discharge, which may cause eutrophication. The current study assessed the suitability of three periphytic cyanobacteria (Geitlerinema sp., Gloeotrichia sp., and Lyngbya sp.) isolated from shrimp ponds. These cyanobacteria were immobilized by self-adhesion to polyvinyl chloride sheets, forming mats, and were screened...

  18. Market integration of cold and warmwater shrimp in Europe

    DEFF Research Database (Denmark)

    Ankamah-Yeboah, Isaac; Ståhl, Lisa; Nielsen, Max

    2017-01-01

    ) holds in three of the five cases. For processed shrimp, the LOP holds in three of four integrated cases, and for retail sales in the UK and Denmark, the LOP fails to hold in the presence of market integration. Unprocessed coldwater shrimp leads the market in northern Europe. Downstream, prices adjust......This study examines market integration between the cold and warmwater shrimp value chain in the UK, Denmark, Italy, Sweden, and Norway using cointegration methods. For all countries, market integration exists between cold and warmwater unprocessed shrimp imports, where the law of one price (LOP...

  19. Shrimp viral diseases, import risk assessment and international trade.

    Science.gov (United States)

    Karunasagar, Iddya; Ababouch, Lahsen

    2012-09-01

    Shrimp is an important commodity in international trade accounting for 15 % in terms of value of internationally traded seafood products which reached $102.00 billion in 2008. Aquaculture contributes to over 50 % of global shrimp production. One of the major constraints faced by shrimp aquaculture is the loss due to viral diseases like white spot syndrome, yellow head disease, and Taura syndrome. There are several examples of global spread of shrimp diseases due to importation of live shrimp for aquaculture. Though millions of tonnes of frozen or processed shrimp have been traded internationally during the last two decades despite prevalence of viral diseases in shrimp producing areas in Asia and the Americas, there is no evidence of diseases having been transmitted through shrimp imported for human consumption. The guidelines developed by the World Animal Health Organisation for movement of live animals for aquaculture, frozen crustaceans for human consumption, and the regulations implemented by some shrimp importing regions in the world are reviewed.

  20. Increased opercular rates of pink salmon (Oncorhynchus gorbuscha) fry after exposure to the eater-soluble fraction of Prudhoe Bay crude oil

    Energy Technology Data Exchange (ETDEWEB)

    Thomas, R E [Chico State Univ., CA; Rice, S D

    1976-01-01

    The opercular rates of pink salmon (Oncorhynchus gorbuscha) fry were measured during 24-h exposure to sublethal concentrations of the water-soluble fraction of Prudhoe Bay crude oil. Opercular rates increased significantly for as long as 9 and 12 h after exposure to water-soluble fractions prepared from oil-water solutions of 2.83 and 3.46 ppM. The increases in rates were proportional to increases in dose. Recording changes in opercular rates appears to be a suitable method for detecting sublethal physiological effects of stress, because the observed changes occurred at approximately 20 percent of the 96 h-LC50.

  1. Extreme morphologies of mantis shrimp larvae

    OpenAIRE

    Haug, Carolin; Ahyong, Shane T.; Wiethase, Joris H.; Olesen, Jørgen; Haug, Joachim T.

    2016-01-01

    ABSTRACT Larvae of stomatopods (mantis shrimps) are generally categorized into four larval types: antizoea, pseudozoea (both representing early larval stages), alima and erichthus (the latter two representing later larval stages). These categories, however, do not reflect the existing morphological diversity of stomatopod larvae, which is largely unstudied. We describe here four previously unknown larval types with extreme morphologies. All specimens were found in the collections of the Zoolo...

  2. AFSC/ABL: Pink salmon data collected at Sashin Creek Weir 1934-2002

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — A database describing a 67-year time series for Sashin Creek pink salmon (Oncorhynchus gorbuscha) data is presented. The database details the survival and other...

  3. AFSC/ABL: Population structure of odd- and even-broodline Asian pink salmon

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Electrophoretic analysis of Asian even brood-year pink salmon stocks has shown regional heterogeneity (Noll et al. in review). Hypothetical mixed fisheries were...

  4. Histological observations on the scleractinian coral Porites lutea affected by pink-line syndrome

    Digital Repository Service at National Institute of Oceanography (India)

    Ravindran, J.; Raghukumar, C.

    A pink-line syndrome (PLS) was reported in the reef building coral Porites lutea in Kavaratti island of the Lakshadweep archipelago. The affected corals had dead patches colonized by a cyanobacterium Phormidium valderianum and the bordering coral...

  5. Broodyear Data - Captive Broodstock Gene Rescue Program for Odd Year Class Elwha River Pink Salmon

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Conduct captive brood stock gene rescue program for Elwha River odd-year class pink salmon. Data is collected by broodyear on % survival to adult, % maturity as two...

  6. Production Data - Captive Broodstock Gene Rescue Program for Odd Year Class Elwha River Pink Salmon

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Conduct captive brood stock gene rescue program for Elwha River odd-year class pink salmon. Information on the number of smolts received into the program is...

  7. Fish Health Data - Captive Broodstock Gene Rescue Program for Odd Year Class Elwha River Pink Salmon

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Conduct captive brood stock gene rescue program for Elwha River odd-year class pink salmon. All fresh mortalities larger than 100 mm are sent to Fish Health for...

  8. Allium Discoloration: Color Compounds Formed during Pinking of Onion and Leek

    Czech Academy of Sciences Publication Activity Database

    Kubec, R.; Urajová, P.; Lacina, O.; Hajšlová, J.; Kuzma, Marek; Zápal, Jakub

    2015-01-01

    Roč. 63, č. 46 (2015), s. 10192-10199 ISSN 0021-8561 Institutional support: RVO:61388971 Keywords : discoloration * plant pigment * pinking Subject RIV: CE - Biochemistry Impact factor: 2.857, year: 2015

  9. Growth Data - Captive Broodstock Gene Rescue Program for Odd Year Class Elwha River Pink Salmon

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Conduct captive brood stock gene rescue program for Elwha River odd-year class pink salmon. The fork length to the nearest mm and weight to the nearest gram of a...

  10. Breeding ecology of the pink-billed lark, Spizocorys conirostris , in ...

    African Journals Online (AJOL)

    Breeding ecology of the pink-billed lark, Spizocorys conirostris , in an agricultural landscape in South Africa. ... Open Access DOWNLOAD FULL TEXT ... The results are compared with data in Birdlife South Africa's Nest Record Card Scheme.

  11. Kõigepealt on näitleja ja alles siis muu, pink kaasa arvatud / Merit Kask

    Index Scriptorium Estoniae

    Kask, Merit

    2007-01-01

    20. sept. esietendub VAT Teatris Eesti Muusika ja Teatriakadeemia Lavakunstikooli lavastajate õppesuuna tudengite koolitöö "Pink", mis koosneb kahest iseseisvast loost - Jon Fosse "Talv", lavastaja Robert Annus ja Edward Albee "Loomaaialugu", lavastaja Uku Uusberg

  12. Pink Pungi näitusel valgub veri linale / Raimu Hanson

    Index Scriptorium Estoniae

    Hanson, Raimu, 1957-

    2006-01-01

    Kunstirühmituse Pink Punk (Sandra Jõgeva, Kristin Kalamees, Aino Ingrid Sepp, Kaarel Sammet) näitusest Y-galeriis. Lähemalt videoinstallatsioonist "Must turg" ja ruumiinstallatsioonist "Elulähedane kogemus"

  13. Enhancing NAD+ salvage metabolism is neuroprotective in a PINK1 model of Parkinson's disease

    Directory of Open Access Journals (Sweden)

    Susann Lehmann

    2017-02-01

    Full Text Available Familial forms of Parkinson's disease (PD caused by mutations in PINK1 are linked to mitochondrial impairment. Defective mitochondria are also found in Drosophila models of PD with pink1 mutations. The co-enzyme nicotinamide adenine dinucleotide (NAD+ is essential for both generating energy in mitochondria and nuclear DNA repair through NAD+-consuming poly(ADP-ribose polymerases (PARPs. We found alterations in NAD+ salvage metabolism in Drosophila pink1 mutants and showed that a diet supplemented with the NAD+ precursor nicotinamide rescued mitochondrial defects and protected neurons from degeneration. Additionally, a mutation of Parp improved mitochondrial function and was neuroprotective in the pink1 mutants. We conclude that enhancing the availability of NAD+ by either the use of a diet supplemented with NAD+ precursors or the inhibition of NAD+-dependent enzymes, such as PARPs, which compete with mitochondria for NAD+, is a viable approach to preventing neurotoxicity associated with mitochondrial defects.

  14. PINK1 regulates mitochondrial trafficking in dendrites of cortical neurons through mitochondrial PKA.

    Science.gov (United States)

    Das Banerjee, Tania; Dagda, Raul Y; Dagda, Marisela; Chu, Charleen T; Rice, Monica; Vazquez-Mayorga, Emmanuel; Dagda, Ruben K

    2017-08-01

    Mitochondrial Protein Kinase A (PKA) and PTEN-induced kinase 1 (PINK1), which is linked to Parkinson's disease, are two neuroprotective serine/threonine kinases that regulate dendrite remodeling and mitochondrial function. We have previously shown that PINK1 regulates dendrite morphology by enhancing PKA activity. Here, we show the molecular mechanisms by which PINK1 and PKA in the mitochondrion interact to regulate dendrite remodeling, mitochondrial morphology, content, and trafficking in dendrites. PINK1-deficient cortical neurons exhibit impaired mitochondrial trafficking, reduced mitochondrial content, fragmented mitochondria, and a reduction in dendrite outgrowth compared to wild-type neurons. Transient expression of wild-type, but not a PKA-binding-deficient mutant of the PKA-mitochondrial scaffold dual-specificity A Kinase Anchoring Protein 1 (D-AKAP1), restores mitochondrial trafficking, morphology, and content in dendrites of PINK1-deficient cortical neurons suggesting that recruiting PKA to the mitochondrion reverses mitochondrial pathology in dendrites induced by loss of PINK1. Mechanistically, full-length and cleaved forms of PINK1 increase the binding of the regulatory subunit β of PKA (PKA/RIIβ) to D-AKAP1 to enhance the autocatalytic-mediated phosphorylation of PKA/RIIβ and PKA activity. D-AKAP1/PKA governs mitochondrial trafficking in dendrites via the Miro-2/TRAK2 complex and by increasing the phosphorylation of Miro-2. Our study identifies a new role of D-AKAP1 in regulating mitochondrial trafficking through Miro-2, and supports a model in which PINK1 and mitochondrial PKA participate in a similar neuroprotective signaling pathway to maintain dendrite connectivity. © 2017 International Society for Neurochemistry.

  15. Regional-Scale Declines in Productivity of Pink and Chum Salmon Stocks in Western North America

    Science.gov (United States)

    Malick, Michael J.; Cox, Sean P.

    2016-01-01

    Sockeye salmon (Oncorhynchus nerka) stocks throughout the southern part of their North American range have experienced declines in productivity over the past two decades. In this study, we tested the hypothesis that pink (O. gorbuscha) and chum (O. keta) salmon stocks have also experienced recent declines in productivity by investigating temporal and spatial trends in productivity of 99 wild North American pink and chum salmon stocks. We used a combination of population dynamics and time series models to quantify individual stock trends as well as common temporal trends in pink and chum salmon productivity across local, regional, and continental spatial scales. Our results indicated widespread declines in productivity of wild chum salmon stocks throughout Washington (WA) and British Columbia (BC) with 81% of stocks showing recent declines in productivity, although the exact form of the trends varied among regions. For pink salmon, the majority of stocks in WA and BC (65%) did not have strong temporal trends in productivity; however, all stocks that did have trends in productivity showed declining productivity since at least brood year 1996. We found weaker evidence of widespread declines in productivity for Alaska pink and chum salmon, with some regions and stocks showing declines in productivity (e.g., Kodiak chum salmon stocks) and others showing increases (e.g., Alaska Peninsula pink salmon stocks). We also found strong positive covariation between stock productivity series at the regional spatial scale for both pink and chum salmon, along with evidence that this regional-scale positive covariation has become stronger since the early 1990s in WA and BC. In general, our results suggest that common processes operating at the regional or multi-regional spatial scales drive productivity of pink and chum salmon stocks in western North America and that the effects of these process on productivity may change over time. PMID:26760510

  16. Distribution of Pink-Pigmented Facultative Methylotrophs on Leaves of Vegetables

    OpenAIRE

    MIZUNO, Masayuki; YURIMOTO, Hiroya; YOSHIDA, Naoko; IGUCHI, Hiroyuki; SAKAI, Yasuyoshi

    2012-01-01

    The distribution of pink-pigmented facultative methylotrophs (PPFMs) on the leaves of various vegetables was studied. All kinds of vegetable leaves tested gave pink-pigmented colonies on agar plates containing methanol as sole carbon source. The numbers of PPFMs on the leaves, colony-forming units (CFU)/g of fresh leaves, differed among the plants, although they were planted and grown at the same farm. Commercial green perilla, Perilla frutescens viridis (Makino) Makino, gave the highest coun...

  17. Developmental and spatial variations in the diet signatures of hyperbenthic shrimp Nauticaris marionis at the Prince Edward Islands based on stable isotope ratios and fatty acid profiles

    Science.gov (United States)

    Richoux, Nicole B.; Allan, E. Louise; Froneman, P. William

    2016-04-01

    The caridean shrimp Nauticaris marionis is an ecologically important species in the benthic community around the sub-Antarctic Prince Edward Islands (PEI) as it represents a key prey item for a variety of top predators breeding on the islands. We hypothesized that the diet of N. marionis shifts during its development, and that spatial variability in food availability results in differentiation in the diet signatures of specimens collected from various locations of the shelf waters around the PEI. Specimens were collected from nine stations (depth range 70 to 240 m) around the PEI at inter-island shelf (from west to east: upstream, between and downstream) and nearshore regions during austral autumn 2009. Stable isotope and fatty acid data both revealed spatial and developmental variations in the shrimp diet. Nearshore shrimp were more 13C-enriched than those from the inter-island region, suggesting increased kelp detritus entered the food web in the nearshore regions. The shrimp showed increases in δ13C and δ15N signatures (and trophic position) with an increase in body size, resulting in distinctions between size classes that reflected shifts in their trophic niche through development. The fatty acid profiles similarly indicated distinctions in diet with increased shrimp size (in the deep regions), and spatial variability was evident in relation to region and depth. All shrimp contained large proportions of polyunsaturated and essential fatty acids, indicating that the quality of food consumed was similar between regions despite the diet variability. Our results provide new dietary information about a key species operating near the base of the food web at the highly productive PEI, and show that there were no areas of enhanced nutrition available to the shrimp. As such, there was no nutritional advantage to shrimp inhabiting any specific region around the PEI.

  18. Dietary administration of a Gracilaria tenuistipitata extract enhances the immune response and resistance against Vibrio alginolyticus and white spot syndrome virus in the white shrimp Litopenaeus vannamei.

    Science.gov (United States)

    Sirirustananun, Nuttarin; Chen, Jiann-Chu; Lin, Yong-Chin; Yeh, Su-Tuen; Liou, Chyng-Hwa; Chen, Li-Li; Sim, Su Sing; Chiew, Siau Li

    2011-12-01

    The haemogram, phenoloxidase (PO) activity, respiratory bursts (RBs), superoxide dismutase (SOD) activity, glutathione peroxidase (GPx) activity, lysozyme activity, and the mitotic index of haematopoietic tissue (HPT) were examined after the white shrimp Litopenaeus vannamei had been fed diets containing the hot-water extract of Gracilaria tenuistipitata at 0 (control), 0.5, 1.0, and 2.0 g kg(-1) for 7-35 days. Results indicated that these parameters directly increased with the amount of extract and time, but slightly decreased after 35 days. RBs, SOD activity, and GPx activity reached the highest levels after 14 days, whereas PO and lysozyme activities reached the highest levels after 28 days. In a separate experiment, white shrimp L. vannamei, which had been fed diets containing the extract for 14 days, were challenged with Vibrio alginolyticus at 2 × 10(6) cfu shrimp(-1) and white spot syndrome virus (WSSV) at 1 × 10(3) copies shrimp(-1), and then placed in seawater. The survival rate of shrimp fed the extract-containing diets was significantly higher than that of shrimp fed the control diet at 72-144 h post-challenge. We concluded that dietary administration of the G. tenuistipitata extract at ≤1.0 g kg(-1) could enhance the innate immunity within 14 days as evidenced by the increases in immune parameters and mitotic index of HPT in shrimp and their enhanced resistance against V. alginolyticus and WSSV infections. Shrimp fed the extract-containing diets showed a higher and continuous increase in the humoral response indicating its persistent role in innate immunity. Copyright © 2011 Elsevier Ltd. All rights reserved.

  19. PINK1 Primes Parkin-Mediated Ubiquitination of PARIS in Dopaminergic Neuronal Survival

    Directory of Open Access Journals (Sweden)

    Yunjong Lee

    2017-01-01

    Full Text Available Mutations in PTEN-induced putative kinase 1 (PINK1 and parkin cause autosomal-recessive Parkinson’s disease through a common pathway involving mitochondrial quality control. Parkin inactivation leads to accumulation of the parkin interacting substrate (PARIS, ZNF746 that plays an important role in dopamine cell loss through repression of proliferator-activated receptor gamma coactivator-1-alpha (PGC-1α promoter activity. Here, we show that PARIS links PINK1 and parkin in a common pathway that regulates dopaminergic neuron survival. PINK1 interacts with and phosphorylates serines 322 and 613 of PARIS to control its ubiquitination and clearance by parkin. PINK1 phosphorylation of PARIS alleviates PARIS toxicity, as well as repression of PGC-1α promoter activity. Conditional knockdown of PINK1 in adult mouse brains leads to a progressive loss of dopaminergic neurons in the substantia nigra that is dependent on PARIS. Altogether, these results uncover a function of PINK1 to direct parkin-PARIS-regulated PGC-1α expression and dopaminergic neuronal survival.

  20. Studies on the immunomodulatory effect of polysaccharide gel extracted from Durio zibethinus in Penaeus monodon shrimp against Vibrio harveyi and WSSV.

    Science.gov (United States)

    Pholdaeng, Komsil; Pongsamart, Sunanta

    2010-04-01

    Oral administration of polysaccharide gel (PG) in shrimp diets revealed immunostimulating potential and disease resistance in Penaeus monodon (black tiger shrimp). PG from the fruit-rind of Durio zibethinus has been characterized to be a pectic polysaccharide with immunomodulating and antibacterial activities. PG inhibited growth of the shrimp bacterial pathogen, Vibrio harveyi 1526, by agar diffusion and broth microdilution tests. Clear inhibition zones on agar plates were observed at the lowest PG concentration of 3.1 mg/ml, where minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) values for PG were 6.3 and 12.5 mg/ml, respectively. Each group of juvenile shrimps, initial mean body weight 0.29 +/- 0.04 g, was housed in a closed-recirculating treated water system and was fed with PG-supplemented diets containing 1, 2 and 3% PG or shrimp basal diet in the control group for 8 and 12 weeks. PG-supplemented diets did not contribute to the overall growth of black tiger shrimp. The immune response was evaluated by analysis of prophenoloxidase activity and total hemocyte count in the shrimp fed PG-supplemented diets for 12 weeks. Prophenoloxidase activity in shrimp fed the 1, 2 and 3% PG-supplemented diet and total hemocyte count in shrimp fed the 1 and 2% PG-supplemented diet were higher (P < 0.05) than those of the control group. The percent survival was higher in groups fed the 1-3% PG-supplemented diets in challenge tests with either white spot syndrome virus (WSSV) or the bacterium V. harveyi 1526 than that of the control group. Relative percent survival (RPS) values in groups fed the 2% PG-supplemented diet showed the highest RPS value for disease resistance of 100% (at Day 6) and 36% (at Day 4) in treated shrimp against viral and bacterial infection, respectively. Mortality of PG-supplemented diets in treated shrimps against WSSV infection was also found to be much lower (P < 0.05) than that of the control group. Copyright 2009

  1. Red, Purple and Pink: The Colors of Diffusion on Pinterest

    Science.gov (United States)

    Bakhshi, Saeideh; Gilbert, Eric

    2015-01-01

    Many lab studies have shown that colors can evoke powerful emotions and impact human behavior. Might these phenomena drive how we act online? A key research challenge for image-sharing communities is uncovering the mechanisms by which content spreads through the community. In this paper, we investigate whether there is link between color and diffusion. Drawing on a corpus of one million images crawled from Pinterest, we find that color significantly impacts the diffusion of images and adoption of content on image sharing communities such as Pinterest, even after partially controlling for network structure and activity. Specifically, Red, Purple and pink seem to promote diffusion, while Green, Blue, Black and Yellow suppress it. To our knowledge, our study is the first to investigate how colors relate to online user behavior. In addition to contributing to the research conversation surrounding diffusion, these findings suggest future work using sophisticated computer vision techniques. We conclude with a discussion on the theoretical, practical and design implications suggested by this work—e.g. design of engaging image filters. PMID:25658423

  2. Pink spot, white spot: the pineal skylight of the leatherback turtle (Dermochelys coriacea Vandelli 1761) skull and its possible role in the phenology of feeding migrations

    Science.gov (United States)

    Davenport, John; Jones, T. Todd; Work, Thierry M.; Balazs, George H.

    2014-01-01

    Leatherback turtles, Dermochelys coriacea, which have an irregular pink area on the crown of the head known as the pineal or ‘pink spot’, forage upon jellyfish in cool temperate waters along the western and eastern margins of the North Atlantic during the summer. Our study showed that the skeletal structures underlying the pink spot in juvenile and adult turtles are compatible with the idea of a pineal dosimeter function that would support recognition of environmental light stimuli. We interrogated an extensive turtle sightings database to elucidate the phenology of leatherback foraging during summer months around Great Britain and Ireland and compared the sightings with historical data for sea surface temperatures and day lengths to assess whether sea surface temperature or light periodicity/levels were likely abiotic triggers prompting foraging turtles to turn south and leave their feeding grounds at the end of the summer. We found that sea temperature was too variable and slow changing in the study area to be useful as a trigger and suggest that shortening of day lengths as the late summer equilux is approached provides a credible phenological cue, acting via the pineal, for leatherbacks to leave their foraging areas whether they are feeding close to Nova Scotia or Great Britain and Ireland.

  3. Bacterial dynamics in intestines of the black tiger shrimp and the Pacific white shrimp during Vibrio harveyi exposure.

    Science.gov (United States)

    Rungrassamee, Wanilada; Klanchui, Amornpan; Maibunkaew, Sawarot; Karoonuthaisiri, Nitsara

    2016-01-01

    The intestinal microbiota play important roles in health of their host, contributing to maintaining the balance and resilience against pathogen. To investigate effects of pathogen to intestinal microbiota, the bacterial dynamics upon a shrimp pathogen, Vibrio harveyi, exposures were determined in two economically important shrimp species; the black tiger shrimp (BT) and the Pacific white shrimp (PW). Both shrimp species were reared under the same diet and environmental conditions. Shrimp survival rates after the V. harveyi exposure revealed that the PW shrimp had a higher resistance to the pathogen than the BT shrimp. The intestinal bacterial profiles were determined by denaturing gradient gel electrophoresis (DGGE) and barcoded pyrosequencing of the 16S rRNA sequences under no pathogen challenge control and under pathogenic V. harveyi challenge. The DGGE profiles showed that the presence of V. harveyi altered the intestinal bacterial patterns in comparison to the control in BT and PW intestines. This implies that bacterial balance in shrimp intestines was disrupted in the presence of V. harveyi. The barcoded pyrosequencing analysis showed the similar bacterial community structures in intestines of BT and PW shrimp under a normal condition. However, during the time course exposure to V. harveyi, the relative abundance of bacteria belong to Vibrio genus was higher in the BT intestines at 12h after the exposure, whereas relative abundance of vibrios was more stable in PW intestines. The principle coordinates analysis based on weighted-UniFrac analysis showed that intestinal bacterial population in the BT shrimp lost their ability to restore their bacterial balance during the 72-h period of exposure to the pathogen, while the PW shrimp were able to reestablish their bacterial population to resemble those seen in the unexposed control group. This observation of bacterial disruption might correlate to different mortality rates observed between the two shrimp species

  4. The application of bioflocs technology to protect brine shrimp (Artemia franciscana) from pathogenic Vibrio harveyi.

    Science.gov (United States)

    Crab, R; Lambert, A; Defoirdt, T; Bossier, P; Verstraete, W

    2010-11-01

    To study the potential biocontrol activity of bioflocs technology. Glycerol-grown bioflocs were investigated for their antimicrobial and antipathogenic properties against the opportunistic pathogen Vibrio harveyi. The bioflocs did not produce growth-inhibitory substances. However, bioflocs and biofloc supernatants decreased quorum sensing-regulated bioluminescence of V. harveyi. This suggested that the bioflocs had biocontrol activity against this pathogen because quorum sensing regulates virulence of vibrios towards different hosts. Interestingly, the addition of live bioflocs significantly increased the survival of gnotobiotic brine shrimp (Artemia franciscana) larvae challenged to V. harveyi. Bioflocs grown on glycerol as carbon source inhibit quorum sensing-regulated bioluminescence in V. harveyi and protect brine shrimp larvae from vibriosis. The results presented in this study indicate that in addition to water quality control and in situ feed production, bioflocs technology could help in controlling bacterial infections within the aquaculture pond. © 2010 The Authors. Journal of Applied Microbiology © 2010 The Society for Applied Microbiology.

  5. Bioaccumulation of Copper (Cu) and Chromium (Cr) on export comodity vanamei shrimp from Karawang, West Java

    Science.gov (United States)

    Rahman, A.; Takarina, N. D.; Siswantining, T.; Pin, T. G.; Soedjiarti, T.

    2018-05-01

    Karawang is one of regencies in West Java which has great potential for vannamei culture. The farm here was modern farm and using Citarum River as water source. Human activities like household and industry around the river cause its quality decrease and give negative impact to shrimp farm. This research was aimed to investigate the bioaccumulation of copper (Cu) and chromium (Cr) on vannamei shrimp from Karawang, West Java. Amount of shrimp’s meat and carapace were used for heavy metal measurement using Atomic Absorption Specthrophotometry. Result showed that contents of copper both in meat and carapace were higher than content of chromium. Moreover, the content of both metals was higher on carapace compared to meat. Since the content of meat were below threshold, so it is safe for consumption. There is no significant difference content of both metals in carapace.

  6. Oral administration of formalin killed Vibrio anguillarum cells improves growth and protection against challenge with Vibrio harveyi in banana shrimp.

    Science.gov (United States)

    Patil, P K; Gopal, C; Panigrahi, A; Rajababu, D; Pillai, S M

    2014-03-01

    Larval rearing in hatcheries and highly intensive grow-out culture practices followed in shrimp production systems favour the growth of potential pathogenic bacterial loads. This study reports the efficacy of formalin-killed vibrio bacterin on growth, survival and protection to challenge with virulent Vibrio harveyi and Vibrio anguillarum in juveniles of banana shrimp Fenneropenaeus merguiensis. Postlarvae 15 (0·24 ± 0·01 g) were administered orally in different concentrations of bacterial preparation (0, 10(6) , 10(8) , 10(10) and 10(12 ) CFU kg(-1) feed) for a period of 6 weeks. Physicochemical and microbial quality of water in larval rearing tanks, and growth and survival of the postlarvae were monitored at regular intervals, and body composition was estimated at the end of the experiment. Shrimps were challenged with V. harveyi and V. anguillarum, and cumulative mortality was calculated. The group receiving 10(8)  CFU kg(-1) feed showed highest average weight gain (162·66 ± 22·94 mg) and survival (90·33 ± 4·5%) and lowest cumulative mortality following the challenge with V. anguillarum (26%) and V. harveyi (36·67%). The results of the study suggest that formalized vibrio administered orally to F. merguiensis postlarvae could induce both homologous and heterologous protection against V. anguillarum and V. harveyi. 'Vaccination' of shrimp postlarvae at hatcheries would help in preventing the losses due to vibriosis and the most susceptible stages of shrimp development. The study demonstrates the cross-protection offered by the oral feeding of formalin-killed Vibrio anguillarum against pathogenic V. harveyi challenge at the early developmental stages of banana shrimp, Fenneropenaeus merguiensis. © 2013 The Society for Applied Microbiology.

  7. Amphidromy in shrimps: a life cycle between rivers and the sea

    Directory of Open Access Journals (Sweden)

    Raymond T Bauer

    2013-09-01

    Full Text Available Amphidromy is a diadromous life history pattern, common in tropical and subtropical freshwater caridean shrimps, in which adults live, breed and spawn small-sized embryos in freshwater but have extended larval development (ELD in marine waters. Most completely freshwater species spawn large embryos with either direct or abbreviated larval development (ALD. An important benefit of amphidromy is dispersal among river systems via marine larvae, which increases their access to alternative habitats. Thus, amphidromous species have much broader geographic distributions than closely related completely freshwater ones with ALD. ALD and freshwater ELD species appear to have evolved from amphidromous species with marine ancestors. Delivery of larvae to the sea in many amphidromous species is accomplished by upstream hatching and river drift of larvae to the sea. In other species, the females themselves apparently migrate down to marine waters to spawn. After development, the postlarvae must find a river mouth and migrate upstream to the adult habitat. Migrations occur at night, with juveniles swimming or crawling along the river or stream bank. Larvae are released during the wet or flood season of the year, while juvenile migrations take place during the dry or low-flow season. Both larval downstream and juvenile upstream movements are disrupted by human impacts such as dams and other forms of river control. Although much progress has been made in understanding the evolution and ecology of amphidromy, research is still needed on all aspects of shrimp amphidromy, especially in Latin America with its diverse freshwater shrimp fauna.

  8. Shrimp Tropomyosin Retains Antibody Reactivity after Exposure to Acidic Conditions

    Science.gov (United States)

    Although shrimp can be found in certain high acid food matrices, the allergenic capacity of shrimp tropomyosin exposed to low pH condition has not been fully clarified. Thus, a model marinade comprising white vinegar adjusted to different pH was used to determine the effects of acid-induced denatura...

  9. Biology, genome organization and evolution of parvoviruses in marine shrimp

    Science.gov (United States)

    A number of parvoviruses are now know to infect marine shrimp, and these viruses alone or in combination with other viruses have the potential to cause major losses in shrimp aquaculture globally. This review provides a comprehensive overview of the biology, genome organization, gene expression, and...

  10. Controlled reproduction of penaeid shrimp: a contribution to its improvement

    NARCIS (Netherlands)

    Alfaro Montoya, J.

    2001-01-01

    This dissertation deals with controlled reproduction of penaeid shrimp. New knowledge about natural reproductive activity of Penaeus occidentalis in Gulf of Nicoya, Costa Rica, is presented. Since in vitro fertilization of open thelycum shrimp proved unsuccessful, a hypothesis is given to

  11. Job Satisfaction in the Shrimp Trawl Fisheries of Vietnam

    Science.gov (United States)

    Sinh, Le Xuan

    2012-01-01

    This paper investigates the job satisfaction of small-scale shrimp trawl fishers in the vicinity of Camau National Park in southern Vietnam. The research sample consisted of 77 fishers who belong to a growing population of shrimp fishers in the region. The results suggest that 60% would change their fishing metier, 78% would leave fishing for…

  12. Defensive enrolment in mantis shrimp larvae (Malacostraca: Stomatopoda)

    NARCIS (Netherlands)

    Haug, C.; Haug, J.T.

    2014-01-01

    We describe a possible new defensive behaviour of larval stages of mantis shrimps (Stomatopoda). Mantis shrimp larvae are rarely observed in nature, thus the study is based on postures of museum material and functional morphological aspects. Specimens described here are tightly enrolled, their pleon

  13. Job Satisfaction in the Shrimp Trawl Fisheries of Chennai, India

    Science.gov (United States)

    Bavinck, Maarten

    2012-01-01

    Shrimp trawling represents an important fishing metier in South India, generating high levels of employment and economic value. It is also a contested metier, ostensibly contributing to environmental degradation and social inequality. This paper investigates the job satisfaction of crew members (captains and workers) on board the shrimp trawlers…

  14. Effect of organic acids on shrimp pathogen, Vibrio harveyi.

    Science.gov (United States)

    Mine, Saori; Boopathy, Raj

    2011-07-01

    Shrimp farming accounts for more than 40% of the world shrimp production. Luminous vibriosis is a shrimp disease that causes major economic losses in the shrimp industry as a result of massive shrimp kills due to infection. Some farms in the South Asia use antibiotics to control Vibrio harveyi, a responsible pathogen for luminous vibriosis. However, the antibiotic-resistant strain was found recently in many shrimp farms, which makes it necessary to develop alternative pathogen control methods. Short-chain fatty acids are metabolic products of organisms, and they have been used as food preservatives for a long time. Organic acids are also commonly added in feeds in animal husbandry, but not in aquaculture. In this study, growth inhibitory effects of short-chain fatty acids, namely formic acid, acetic acid, propionic acid, and butyric acid, on V. harveyi were investigated. Among four acids, formic acid showed the strongest inhibitory effect followed by acetic acid, propionic acid, and butyric acid. The minimum inhibitory concentration (MIC) of 0.035% formic acid suppressed growth of V. harveyi. The major inhibitory mechanism seems to be the pH effect of organic acids. The effective concentration 50 (EC50) values at 96 h inoculation for all organic acids were determined to be 0.023, 0.041, 0.03, and 0.066% for formic, acetic, propionic, and butyric acid, respectively. The laboratory study results are encouraging to formulate shrimp feeds with organic acids to control vibrio infection in shrimp aquaculture farms.

  15. Immune defence White Spot Syndrome Virus infected shrimp, Penaeus monodon

    NARCIS (Netherlands)

    Arts, J.A.J.

    2006-01-01

    White spot syndrome virus (WSSV) is the most important viral pathogen of cultured penaeid shrimp worldwide. Since the initial discovery of the virus inTaiwanin 1992, it has spread to shrimp farming regions in Southeast Asia, the

  16. Biotechnological and agronomic potential of endophytic pink-pigmented methylotrophic Methylobacterium spp.

    Science.gov (United States)

    Dourado, Manuella Nóbrega; Camargo Neves, Aline Aparecida; Santos, Daiene Souza; Araújo, Welington Luiz

    2015-01-01

    The genus Methylobacterium is composed of pink-pigmented facultative methylotrophic (PPFM) bacteria, which are able to synthesize carotenoids and grow on reduced organic compounds containing one carbon (C1), such as methanol and methylamine. Due to their high phenotypic plasticity, these bacteria are able to colonize different habitats, such as soil, water, and sediment, and different host plants as both endophytes and epiphytes. In plant colonization, the frequency and distribution may be influenced by plant genotype or by interactions with other associated microorganisms, which may result in increasing plant fitness. In this review, different aspects of interactions with the host plant are discussed, including their capacity to fix nitrogen, nodule the host plant, produce cytokinins, auxin and enzymes involved in the induction of systemic resistance, such as pectinase and cellulase, and therefore plant growth promotion. In addition, bacteria belonging to this group can be used to reduce environmental contamination because they are able to degrade toxic compounds, tolerate high heavy metal concentrations, and increase plant tolerance to these compounds. Moreover, genome sequencing and omics approaches have revealed genes related to plant-bacteria interactions that may be important for developing strains able to promote plant growth and protection against phytopathogens.

  17. Biotechnological and Agronomic Potential of Endophytic Pink-Pigmented Methylotrophic Methylobacterium spp.

    Directory of Open Access Journals (Sweden)

    Manuella Nóbrega Dourado

    2015-01-01

    Full Text Available The genus Methylobacterium is composed of pink-pigmented facultative methylotrophic (PPFM bacteria, which are able to synthesize carotenoids and grow on reduced organic compounds containing one carbon (C1, such as methanol and methylamine. Due to their high phenotypic plasticity, these bacteria are able to colonize different habitats, such as soil, water, and sediment, and different host plants as both endophytes and epiphytes. In plant colonization, the frequency and distribution may be influenced by plant genotype or by interactions with other associated microorganisms, which may result in increasing plant fitness. In this review, different aspects of interactions with the host plant are discussed, including their capacity to fix nitrogen, nodule the host plant, produce cytokinins, auxin and enzymes involved in the induction of systemic resistance, such as pectinase and cellulase, and therefore plant growth promotion. In addition, bacteria belonging to this group can be used to reduce environmental contamination because they are able to degrade toxic compounds, tolerate high heavy metal concentrations, and increase plant tolerance to these compounds. Moreover, genome sequencing and omics approaches have revealed genes related to plant-bacteria interactions that may be important for developing strains able to promote plant growth and protection against phytopathogens.

  18. 78 FR 50383 - Certain Frozen Warmwater Shrimp From the Republic of Indonesia: Final Negative Countervailing...

    Science.gov (United States)

    2013-08-19

    ... Packing Co., Inc.; Lafitte Frozen Foods Corp.; M&M Shrimp (Biloxi Freezing and Processing); Ocean Springs... to as coldwater shrimp, in any state of processing; (3) fresh shrimp and prawns whether shell-on or... Facilities for LTAR 21. Government Provision of Shrimp Breeding Stock and Seed for LTAR 22. Government Loans...

  19. Efficient use of shrimp waste: present and future trends.

    Science.gov (United States)

    Kandra, Prameela; Challa, Murali Mohan; Jyothi, Hemalatha Kalangi Padma

    2012-01-01

    The production of shrimp waste from shrimp processing industries has undergone a dramatic increase in recent years. Continued production of this biomaterial without corresponding development of utilizing technology has resulted in waste collection, disposal, and pollution problems. Currently used chemical process releases toxic chemicals such as HCl, acetic acid, and NaOH into aquatic ecosystem as byproducts which will spoil the aquatic flora and fauna. Environmental protection regulations have become stricter. Now, there is a need to treat and utilize the waste in most efficient manner. The shrimp waste contains several bioactive compounds such as chitin, pigments, amino acids, and fatty acids. These bioactive compounds have a wide range of applications including medical, therapies, cosmetics, paper, pulp and textile industries, biotechnology, and food applications. This current review article present the utilization of shrimp waste as well as an alternative technology to replace hazardous chemical method that address the future trends in total utilization of shrimp waste for recovery of bioactive compounds.

  20. Study on irradiation preservation of frozen shelled shrimps

    International Nuclear Information System (INIS)

    Liu Chunquan; Zhu Jiating; Zhao Yongfu; Yu Gang; Zhang Weidong; Jin Yudong; Ji Ping

    2004-01-01

    The effect of irradiaiton preservation of frozen shelled shrimps for export was studied. The microbial indexd, nutritional ingredient, physico-chemical index for irradiation frozen shelled shrimps were detected. The results showed that 3-5 kGy irradiation dose could kill more than 99% of all kinds of microorganisms in frozen shelled shrimps, the content of most amino acids in shelled shrimps increased, after being irradiated by 1-9 kGy dose, the total amino acids had been obvisouly higher than CK, the increased range was 0.33%-24.6%, the content of the total volatile basic nitrogen (TVBN) decreased. Compared with the CK, the content of the heavy metal elements etc had no obvious change, the presrvation duration of irradiated shelled shrimp was twelve months longer than that of CK when storage temperature was under -7 degree C soft frozen, Compared with -18 degree C the effect of irradiation preservation had no obvious change. (authors)

  1. Biochemical and molecular analysis of pink tomatoes: deregulated expression of the gene encoding transcription factor SlMYB12 leads to pink tomato fruit colour

    NARCIS (Netherlands)

    Ballester, A.R.; Molthoff, J.W.; Vos, de C.H.; Lintel Hekkert, B.; Orzaez, D.; Fernandez-Moreno, J.P.; Tripodi, S.; Grandillo, S.; Martin, C.; Heldens, J.; Ykema, M.; Granell, A.; Bovy, A.G.

    2010-01-01

    The color of tomato fruit is mainly determined by carotenoids and flavonoids. Phenotypic analysis of an introgression line (IL) population derived from a cross between Solanum lycopersicum 'Moneyberg' and the wild species Solanum chmielewskii revealed three ILs with a pink fruit color. These lines

  2. Suppression of Shrimp Melanization during White Spot Syndrome Virus Infection*

    Science.gov (United States)

    Sutthangkul, Jantiwan; Amparyup, Piti; Charoensapsri, Walaiporn; Senapin, Saengchan; Phiwsaiya, Kornsunee; Tassanakajon, Anchalee

    2015-01-01

    The melanization cascade, activated by the prophenoloxidase (proPO) system, plays a key role in the production of cytotoxic intermediates, as well as melanin products for microbial sequestration in invertebrates. Here, we show that the proPO system is an important component of the Penaeus monodon shrimp immune defense toward a major viral pathogen, white spot syndrome virus (WSSV). Gene silencing of PmproPO(s) resulted in increased cumulative shrimp mortality after WSSV infection, whereas incubation of WSSV with an in vitro melanization reaction prior to injection into shrimp significantly increased the shrimp survival rate. The hemolymph phenoloxidase (PO) activity of WSSV-infected shrimp was extremely reduced at days 2 and 3 post-injection compared with uninfected shrimp but was fully restored after the addition of exogenous trypsin, suggesting that WSSV probably inhibits the activity of some proteinases in the proPO cascade. Using yeast two-hybrid screening and co-immunoprecipitation assays, the viral protein WSSV453 was found to interact with the proPO-activating enzyme 2 (PmPPAE2) of P. monodon. Gene silencing of WSSV453 showed a significant increase of PO activity in WSSV-infected shrimp, whereas co-silencing of WSSV453 and PmPPAE2 did not, suggesting that silencing of WSSV453 partially restored the PO activity via PmPPAE2 in WSSV-infected shrimp. Moreover, the activation of PO activity in shrimp plasma by PmPPAE2 was significantly decreased by preincubation with recombinant WSSV453. These results suggest that the inhibition of the shrimp proPO system by WSSV partly occurs via the PmPPAE2-inhibiting activity of WSSV453. PMID:25572398

  3. Suppression of shrimp melanization during white spot syndrome virus infection.

    Science.gov (United States)

    Sutthangkul, Jantiwan; Amparyup, Piti; Charoensapsri, Walaiporn; Senapin, Saengchan; Phiwsaiya, Kornsunee; Tassanakajon, Anchalee

    2015-03-06

    The melanization cascade, activated by the prophenoloxidase (proPO) system, plays a key role in the production of cytotoxic intermediates, as well as melanin products for microbial sequestration in invertebrates. Here, we show that the proPO system is an important component of the Penaeus monodon shrimp immune defense toward a major viral pathogen, white spot syndrome virus (WSSV). Gene silencing of PmproPO(s) resulted in increased cumulative shrimp mortality after WSSV infection, whereas incubation of WSSV with an in vitro melanization reaction prior to injection into shrimp significantly increased the shrimp survival rate. The hemolymph phenoloxidase (PO) activity of WSSV-infected shrimp was extremely reduced at days 2 and 3 post-injection compared with uninfected shrimp but was fully restored after the addition of exogenous trypsin, suggesting that WSSV probably inhibits the activity of some proteinases in the proPO cascade. Using yeast two-hybrid screening and co-immunoprecipitation assays, the viral protein WSSV453 was found to interact with the proPO-activating enzyme 2 (PmPPAE2) of P. monodon. Gene silencing of WSSV453 showed a significant increase of PO activity in WSSV-infected shrimp, whereas co-silencing of WSSV453 and PmPPAE2 did not, suggesting that silencing of WSSV453 partially restored the PO activity via PmPPAE2 in WSSV-infected shrimp. Moreover, the activation of PO activity in shrimp plasma by PmPPAE2 was significantly decreased by preincubation with recombinant WSSV453. These results suggest that the inhibition of the shrimp proPO system by WSSV partly occurs via the PmPPAE2-inhibiting activity of WSSV453. © 2015 by The American Society for Biochemistry and Molecular Biology, Inc.

  4. Modeling Transfer of Vibrio Parahaemolyticus During Peeling of Raw Shrimp.

    Science.gov (United States)

    Xiao, Xingning; Pang, Haiying; Wang, Wen; Fang, Weihuan; Fu, Yingchun; Li, Yanbin

    2018-03-01

    This study aimed to qualify the transfer of Vibrio parahaemolyticus during the shrimp peeling process via gloves under 3 different scenarios. The 1st 2 scenarios provided quantitative information for the probability distribution of bacterial transfer rates from (i) contaminated shrimp (6 log CFU/g) to non-contaminated gloves (Scenario 1) and (ii) contaminated gloves (6 log CFU/per pair) to non-contaminated shrimp (Scenario 2). In Scenario 3, bacterial transfer from contaminated shrimp to non-contaminated shrimp in the shrimp peeling process via gloves was investigated to develop a predictive model for describing the successive bacterial transfer. The range of bacterial transfer rate (%) in Scenarios 1 and 2 was 7% to 91.95% and 0.04% to 12.87%, respectively, indicating that the bacteria can be transferred from shrimp to gloves much easier than that from gloves to shrimp. A Logistic (1.59, 0.14) and Triangle distribution (-1.61, 0.12, 1.32) could be used to describe the bacterial transfer rate in Scenarios 1 and 2, respectively. In Scenario 3, a continuously decay patterning with fluctuations as the peeling progressed has been observed at all inoculation levels of the 1st shrimp (5, 6, and 7 log CFU/g). The bacteria could be transferred easier at 1st few peels, and the decreasing bacterial transfer was found in later phase. Two models (exponential and Weibull) could describe the successive bacterial transfer satisfactorily (pseudo-R 2 > 0.84, RMSE peeling process. The bacterial transfer rate distribution and predictive model derived from this work could be used in risk assessment of V. parahaemolyticus to ensure peeled shrimp safety. © 2018 Institute of Food Technologists®.

  5. Profitability and technical efficiency of Black tiger shrimp (Penaeus Monodon) culture and White leg shrimp (Penaeus Vannamei) culture in Song Song Cau district, Phu Yen province, Vietnam

    OpenAIRE

    Nguyen, Thi Hoai An

    2012-01-01

    The research measure the profitability and technical efficiency of Black tiger shrimp farms and White leg shrimp farms in Song Cau district, Phu Yen province, Vietnam. Cross-sectional data of 62 Black tiger shrimp samples and 88 White leg shrimp samples were used for comparison two production systems. The profitability analysis shows that White leg shrimp farms achieved an average profit per hectare of 78,883,209 VND ($3,944.16), which was approximately 4 times as much as Black tiger shrimp f...

  6. Immunization with Hypoallergens of shrimp allergen tropomyosin inhibits shrimp tropomyosin specific IgE reactivity.

    Directory of Open Access Journals (Sweden)

    Christine Y Y Wai

    Full Text Available Designer proteins deprived of its IgE-binding reactivity are being sought as a regimen for allergen-specific immunotherapy. Although shrimp tropomyosin (Met e 1 has long been identified as the major shellfish allergen, no immunotherapy is currently available. In this study, we aim at identifying the Met e 1 IgE epitopes for construction of hypoallergens and to determine the IgE inhibitory capacity of the hypoallergens. IgE-binding epitopes were defined by three online computational models, ELISA and dot-blot using sera from shrimp allergy patients. Based on the epitope data, two hypoallergenic derivatives were constructed by site-directed mutagenesis (MEM49 and epitope deletion (MED171. Nine regions on Met e 1 were defined as the major IgE-binding epitopes. Both hypoallergens MEM49 and MED171 showed marked reduction in their in vitro reactivity towards IgE from shrimp allergy patients and Met e 1-sensitized mice, as well as considerable decrease in induction of mast cell degranulation as demonstrated in passive cutaneous anaphylaxis assay. Both hypoallergens were able to induce Met e 1-recognizing IgG antibodies in mice, specifically IgG2a antibodies, that strongly inhibited IgE from shrimp allergy subjects and Met e 1-sensitized mice from binding to Met e 1. These results indicate that the two designer hypoallergenic molecules MEM49 and MED171 exhibit desirable preclinical characteristics, including marked reduction in IgE reactivity and allergenicity, as well as ability to induce blocking IgG antibodies. This approach therefore offers promises for development of immunotherapeutic regimen for shrimp tropomyosin allergy.

  7. Migratory routes and at-sea threats to Pink-footed Shearwaters

    Science.gov (United States)

    Adams, Josh; Felis, Jonathan J.; Hodum, Peter; Colodro, Valentina; Carle, Ryan; López, Verónica

    2016-01-01

    The Pink-footed Shearwater (Ardenna creatopus) is a seabird with a breeding range restricted to three islands in Chile and an estimated world population of approximately 56,000 breeding individuals (Muñoz 2011, Oikonos unpublished data). Due to multiple threats on breeding colonies and at-sea, Pink-footed Shearwaters are listed as Endangered by the government of Chile (Reglamento de Clasificación de Especies, 2011), Threatened by the government of Canada (Environment Canada 2008), and are listed under Appendix 1 of the Agreement on the Conservation of Albatrosses and Petrels (ACAP 2013). A principal conservation concern for the species is mortality from fisheries bycatch during the breeding and non-breeding seasons; thus, identification of areas of overlap between at-sea use by Pink-footed Shearwaters and fisheries is a high priority conservation objective (Hinojosa Sáez and Hodum 1997, Mangel et al. 2013, ACAP 2013). During the non-breeding period, Pink-footed Shearwaters range as far north as Canada, although little was known until recently about migration routes and important wintering areas where fisheries bycatch could be a risk. Additionally, Pink-footed Shearwaters face at-sea threats during the non-breeding season off the west coast of North America. Recently, areas used by wintering Pink-footed Shearwaters have been identified as areas of interest for developing alternative energy offshore in North America (e.g., floating wind generators; Trident Winds 2016). The goal of our study was to track Pink-footed Shearwater post-breeding movements with satellite tags to identify timing and routes of migration, locate important non-breeding foraging habitats, and determine population distribution among different wintering regions.

  8. Antiplatelet activity of white and pink Nelumbo nucifera Gaertn flowers

    Directory of Open Access Journals (Sweden)

    Brindha Durairaj

    2010-09-01

    Full Text Available Nelumbo nucifera Gaertn (Nelumbonaceae a plant used in Ayurvedic medicine (common name: lotus, is a perennial, large and rhizomatous aquatic herb most prevalent in South India. Preliminary phytochemical screening of both white and pink Nelumbo nucifera flowers revealed the presence of phytochemical constituents (flavonoids, alkaloids, phenols etc,. Hence, an attempt has been made to screen the effect of Nelumbo nucifera flowers (both types on platelet aggregation. The antiplatelet activity of hydroethanolic extract of both types of flowers was studied using platelet-rich plasma in different concentrations (100-500µg/ml. Both white and pink Nelumbo nucifera flower extracts showed dose-dependent effective antiplatelet activity with maximum activity at 500µg/ml concentration; prevention of platelet aggregation was 50% of that achieved with standard aspirin. Furthermore, the antiplatelet activity of white flowers was relatively high (pNelumbo nucifera Gaertn (Nelumbonaceae, planta utilizada na medicina Ayurvédica, é erva aquática rizomatosa grande, predominante no sul da Índia. A triagem fitoquímica preliminar das flores brancas e cor-de-rosa de Nelumbo nucifera revelou a presença de constituintes fitoquímicos (flavonoides, alcaloides, fenóis etc. Assim, tentou-se a triagem do efeito das flores de Nelumbo nucifera de ambos os tipos na agregação plaquetária. A atividade antiplaquetária dos extratos hidroetanólico de ambos os tipos de flores foi estudada, utilizando-se plasma rico em plaquetas em duas diferentes concentrações (100 - 500 µg/mL. Tanto os extratos das flores brancas quanto daquelas de cor-de-rosa mostraram atividade antiplaquetária dose-dependente, com o máximo na concentração de 500 µg/mL. A prevenção da agregação plaquetária foi 50% daquela alcançada com o padrão de ácido acetilsalicílico. Além disso, a atividade antiplaquetária das flores brancas foi, relativamente, alta (p<0,05; ANOVA

  9. Performance of a constructed wetland treating intensive shrimp aquaculture wastewater under high hydraulic loading rate

    International Nuclear Information System (INIS)

    Lin, Y.-F.; Jing, S.-R.; Lee, D.-Y.; Chang, Y.-F.; Chen, Y.-M.; Shih, K.-C.

    2005-01-01

    A water treatment unit, mainly consisting of free water surface (FWS) and subsurface flow (SF) constructed wetland cells, was integrated into a commercial-scale recirculating aquaculture system for intensive shrimp culture. This study investigated performance of the treatment wetlands for controlling water quality. The results showed that the FWS-SF cells effectively removed total suspended solids (55-66%), 5-day biochemical oxygen demand (37-54%), total ammonia (64-66%) and nitrite (83-94%) from the recirculating water under high hydraulic loading rates (1.57-1.95 m/day). This led to a water quality that was suitable for shrimp culture and effluent that always satisfied the discharge standards. The area ratios of wetlands to culture tank being demonstrated (0.43) and calculated (0.096) in this study were both significantly lower than the reported values. Accordingly, a constructed wetland was technically and economically feasible for managing water quality of an intensive aquaculture system. - A constructed wetland was found to be technically and economically feasible for managing water quality of an intensive recirculating aquaculture system

  10. Environmental impact of aquaculture-sedimentation and nutrient loadings from shrimp culture of the southeast coastal region of the Bay of Bengal.

    Science.gov (United States)

    Das, Biplob; Khan, Yusuf Sharif Ahmed; Das, Pranab

    2004-01-01

    Nutrient loadings were measured for surface seawater and bottom sediments of semi-intensive and improved extensive shrimp culture pond, adjacent estuary, and fallow land in the south-east coastal region of Bangladesh during August, 2000-January, 2001 to evaluate the impact of shrimp culture. The mean levels of nutrients found in the pond surface water were 108.780 mg/L for CaCO3, 0.526 mg/L for NH4+ -N, 3.075 wt% for organic carbon, 7.00 mg/L for PO4-P, 5.57 mg/L for NO3-N, and 7.33 mg/L for chlorophyll-a. The maximum mean value of H2S (0.232 mg/L) was found in estuarine water. Nutrients loading were found to be decreased with distance from the shrimp farm discharge unit in estuarine water. The mean level of organic matter, total nitrogen, and organic carbon were found in higher concentrations in sediments of cultured pond compared to bottom soil of adjacent fallow land at the same elevation. Extractable Ca values were found in higher concentration (550.33 ppt) in adjacent fallow land, as the shrimps for molting in shrimp ponds use extractable Ca. The relation between seawater H2S value and sediment pH (r = - 0.94); sediment organic carbon and sediment pH values (r = -0.76), sediment total nitrogen and sediment pH (r = -0.74) were found to be highly negatively correlated. Whereas the relation between seawater H2S value and sediment total nitrogen (r = 0.92), water NH4+ -N and sediment pH (r = 0.66) were found to be positively correlated. The results revealed that load of nutrients at eutrophic level in estuarine water, and decrease of soil pH; leading to acid sulphate soil formation indicates a negative impact of shrimp culture.

  11. Molecular variations in Vibrio alginolyticus and V. harveyi in shrimp-farming systems upon stress

    Directory of Open Access Journals (Sweden)

    Anix Vivek Santhyia

    2015-01-01

    Full Text Available A study was performed to investigate the genomic variations in the shrimp farm isolates of Vibrio alginolyticus and V. harveyi when the isolates were subjected to environmental stress. Samples of shrimps, water and sediment were collected from Southern Indian coastal shrimp farms. Vibrio isolates were biochemically identified and confirmed using 16S rDNA and gyrB gene specific PCR. The bacterial strains were genotyped by PCR fingerprinting using GTG(5 and IS (Insertion Sequence primers. Seven strains each of V. alginolyticus and V. harveyi were subjected to 10 passages through trypticase soya broth (TSB, which contained different NaCl concentrations (3, 6 and 8% and trypticase soya agar (TSA. V. alginolyticus was also passaged through TSB with a 12% NaCl concentration. PCR fingerprinting, which was performed on the strains that were passaged through different salt concentrations, confirmed that V. alginolyticus and V. harveyi could affect the genomic variations, depending on the environmental conditions of the culture. The study highlights the complex genotypic variations that occur in Vibrio strains of tropical aquatic environment because of varied environmental conditions, which result in genetic divergence and/or probable convergence. Such genetic divergence and/or convergence can lead to the organismal adaptive variation, which results in their ability to cause a productive infection in aquatic organisms or generation of new strains.

  12. COLOUR QUALITY ENHANCED ON GOLDFISH JUVENILES THROUGH SHRIMP HEAD MEAL ENRICHED IN FEED

    Directory of Open Access Journals (Sweden)

    I Wayan Subamia

    2013-06-01

    Full Text Available Goldfish (Carassius sp. is the ornamental fish which has been managed its culture by fish farmers. The objective of the research is to improve the colour quality of goldfish juveniles through enrichment of feed using shrimp head meal as source of carotenoid. The research was conducted at The Research and Development Institute for Ornamental Fish Culture, Depok, using completely randomized design with four treatments of shrimp head meal ratio, 0% (control, 5%, 10%, and 15% in feed, the feed formulation contained isoprotein (30%, and isolipid (15% and three replications of each treatment. Ten juveniles of Carassius sp. with body weight of (1.08±0.02 g stocked in aquarium with water volumes of 20 L. The growth and colour quality in qualitative standard using TCF (Toca Colour Finder were examined, while total carotenoid content on feed were measured by spectrophotometry method. The colour quality of goldfish were also measured at three of fins those were dorsal, ventral, and caudal. The result showed that no significant different on growth and survival rates among the treatments. Based on the present research, the optimal colour improvement to goldfish was by addition of 10% shrimp head meal in feed.

  13. Growth of hatchery raised banana shrimp Penaeus merguiensis (de Man) (Crustacea: Decapoda) juveniles under different salinity

    Digital Repository Service at National Institute of Oceanography (India)

    Saldanha, C.M.; Achuthankutty, C.T.

    relationships of estuaries to the fisheries of the Gulf of Mexico, in Estuaries, edited by Lauff G H (Amer Ass Adv Sci Publ, Washington D C) 1967, pp. 621-638. 3 Mair J McD, Salinity and water-type preference of four species of postlarval shrimp (Penaeus) from... west Mexico, J Exp Mar Biol Ecol, 45(1980)69-82. 4 Achuthankutty C T & Parulekar A H, Biology of commercially important penaeid prawns of Goa waters, Indian J Mar Sci, 15 (1986)171-173. 5 Achuthankutty C T & Parulekar A H, Distribution of penaeid...

  14. The PINK1-Parkin pathway is involved in the regulation of mitochondrial remodeling process

    International Nuclear Information System (INIS)

    Park, Jeehye; Lee, Gina; Chung, Jongkyeong

    2009-01-01

    The two Parkinson's disease (PD) genes, PTEN-induced kinase 1 (PINK1) and parkin, are linked in a common pathway which affects mitochondrial integrity and function. However, it is still not known what this pathway does in the mitochondria. Therefore, we investigated its physiological function in Drosophila. Because Drosophila PINK1 and parkin mutants show changes in mitochondrial morphology in both indirect flight muscles and dopaminergic neurons, we here investigated whether the PINK1-Parkin pathway genetically interacts with the regulators of mitochondrial fusion and fission such as Drp1, which promotes mitochondrial fission, and Opa1 or Marf, which induces mitochondrial fusion. Surprisingly, DrosophilaPINK1 and parkin mutant phenotypes were markedly suppressed by overexpression of Drp1 or downregulation of Opa1 or Marf, indicating that the PINK1-Parkin pathway regulates mitochondrial remodeling process in the direction of promoting mitochondrial fission. Therefore, we strongly suggest that mitochondrial fusion and fission process could be a prominent therapeutic target for the treatment of PD.

  15. Early hypersynchrony in juvenile PINK1-/- motor cortex is rescued by antidromic stimulation

    Directory of Open Access Journals (Sweden)

    Romain eCARRON

    2014-05-01

    Full Text Available In Parkinson’s disease, cortical networks show enhanced synchronized activity but whether this precedes motor signs is unknown. We investigated this question in PINK1-/- mice, a genetic rodent model of the PARK6 variant of familial Parkinson’s disease which shows impaired spontaneous locomotion at 16 months. We used two-photon calcium imaging and whole-cell patch clamp in slices from juvenile (P14-P21 wild-type or PINK1-/- mice. We designed a horizontal tilted cortico-subthalamic slice where the only connection between cortex and subthalamic nucleus (STN is the hyperdirect cortico-subthalamic pathway. We report excessive correlation and synchronization in PINK1-/- M1 cortical networks 15 months before motor impairment. The percentage of correlated pairs of neurons and their strength of correlation were higher in the PINK1-/- M1 than in the wild type network and the synchronized network events involved a higher percentage of neurons. Both features were independent of thalamo-cortical pathways, insensitive to chronic levodopa treatment of pups, but totally reversed by antidromic invasion of M1 pyramidal neurons by axonal spikes evoked by high frequency stimulation (HFS of the STN. Our study describes an early excess of synchronization in the PINK1-/- cortex and suggests a potential role of antidromic activation of cortical interneurons in network desynchronization. Such backward effect on interneurons activity may be of importance for HFS-induced network desynchronization.

  16. Empirical evaluation of cell critical volume dose vs. cell response function for pink mutations in tradescantia

    International Nuclear Information System (INIS)

    Varma, M.N.; Bond, V.P.

    1982-01-01

    Microdosimetric spectra for 0.43, 1.8, and 14.7 MeV neutrons, and for 215 kVp x rays and 1250 keV gammas were used in conjunction with relative biological effectiveness (RBE) values for pink mutations in Tradescantia to obtain an effectiveness function (i.e., a cell critical volume dose vs. cell response function). This effectiveness function (or hit size weighting function) provides the probability of inducing a biological effect of interest (in the present study, pink mutations in Tradescantia) as a function of lineal energy density y. In a preliminary analysis the critical value of y above which pink mutations are seen was 4.5 keV/μm, and the value of y at which the probability reaches unity was 115 keV/μm. Idealized but approximate event size distributions for mono-LET particles ranging from 10 to 5000 keV/μm were generated, and these distributions were weighted by the effectiveness function to determine the pink mutation frequencies. Results are compared with measured pink mutation frequencies for 11 keV/μm ( 12 C) and 31 keV/μm ( 20 Ne) ions

  17. Beyond symbiosis: cleaner shrimp clean up in culture.

    Science.gov (United States)

    Militz, Thane A; Hutson, Kate S

    2015-01-01

    Cleaner organisms exhibit a remarkable natural behaviour where they consume ectoparasites attached to "client" organisms. While this behaviour can be utilized as a natural method of parasitic disease control (or biocontrol), it is not known whether cleaner organisms can also limit reinfection from parasite eggs and larvae within the environment. Here we show that cleaner shrimp, Lysmata amboinensis, consume eggs and larvae of a harmful monogenean parasite, Neobenedenia sp., in aquaculture. Shrimp consumed parasite eggs under diurnal (63%) and nocturnal (14%) conditions as well as infectious larvae (oncomiracidia) diurnally (26%). Furthermore, we trialled the inclusion of cleaner shrimp for preventative parasite management of ornamental fish, Pseudanthias squamipinnis, and found shrimp reduced oncomiracidia infection success of host fish by half compared to controls (held without shrimp). Fish held without cleaner shrimp exhibited pigmentation changes as a result of infection, possibly indicative of a stress response. These results provide the first empirical evidence that cleaner organisms reduce parasite loads in the environment through non-symbiotic cleaning activities. Our research findings have relevance to aquaculture and the marine ornamental trade, where cleaner shrimp could be applied for prophylaxis and control of ectoparasite infections.

  18. IDENTIFICATION OF A LOCAL PROBIOTIC BACTERIUM USING 16S rRNA GENE SEQUENCE THAT WAS USED FOR FIELD TRIAL TO ENHANCED WHITELEG SHRIMP (Litopenaeus vannamei SURVIVAL

    Directory of Open Access Journals (Sweden)

    Tb. Haeru Rahayu

    2015-12-01

    Full Text Available The use of local probiotics in the culture of aquatic organisms is increasing with the demand for more environmental-friendly aquaculture practices. The local bacterium isolate considered as a probiotic was added into the water of whiteleg shrimp (Litopenaeus vannamei culture in a field trial. Four rectangular plastic ponds (ca. 20 m x 30 m per pond were used for 100 days experimentation for six consecutive crops in two years experiment. Survival, harvest size, feed conversion ratio (FCR and Vibrio bacterial count was compared with those of shrimp receiving and none of local isolate. Identification based on 16S rRNA gene sequence shown those isolate was Bacillus pumilus strain DURCK14 with 99% homology. Water shrimp pond added a local isolate had significantly higher survival at about 10.0% to 11.7% than shrimp without added the isolate (p<0.05, and better FCR, but no significant different in shrimp harvest size. Vibrio bacterial was undetected by total plate count. Moreover, it shown better projected yields on an annual basis (three crops per year.

  19. Reúso da água da despesca na produção de camarão Reuse of the shrimp farm effluents in the production of shrimp

    Directory of Open Access Journals (Sweden)

    Renato C. Leitão

    2011-12-01

    Full Text Available A carcinicultura causa impactos ambientais significativos devidos, sobremaneira, à elevada demanda de água e ao descarte de efluentes, agravando o problema de assoreamento e poluição dos mananciais. Este trabalho teve como objetivo buscar uma alternativa para o reaproveitamento do efluente da carcinicultura na própria atividade e assim mitigar os impactos causados. Os experimentos foram realizados em três etapas, a primeira relacionada à toxicidade, para as pós-larvas das águas de despesca, a segunda com a mortalidade das pós-larvas em curto prazo e a terceira relacionada com a sobrevivência em longo prazo e produtividade do camarão ao longo de um ciclo de engorda, utilizando-se água de despesca. Os resultados mostraram que o índice de sobrevivência é de 42,1% quando o camarão é cultivado em águas de despesca; no entanto, a maior mortalidade dos camarões ocorre principalmente na primeira semana do ciclo de engorda, indicando que uma mudança de estratégia na produção de camarão pode aumentar a produtividade da fazenda.The shrimp farming cause significant environmental impacts due to high water consumption and effluent discharge, which worsen problems of sediment deposition and water pollution. This study aims to find an alternative for the use of shrimp farming effluent, and to mitigate the aforementioned impacts. The experiments were carried out in three phases, where the first dealt with the toxicity of the reused effluent on the post-larvae of shrimp, the second dealt with the short term mortality of the shrimps and the third dealt with the long-term survival and productivity of the shrimps along the entire growing cycle. The results show that the survival index is 42.1% when the shrimps are cultivated in shrimp farm effluent. However, most of the mortality occurred within the first week of the growing cycle. This indicates that a change in production strategy can increase productivity of the farm.

  20. Analyzing the development of Indonesia shrimp industry

    Science.gov (United States)

    Wati, L. A.

    2018-04-01

    This research aimed to analyze the development of shrimp industry in Indonesia. Porter’s Diamond Theory was used for analysis. The Porter’s Diamond theory is one of framework for industry analysis and business strategy development. The Porter’s Diamond theory has five forces that determine the competitive intensity in an industry, namely (1) the threat of substitute products, (2) the threat of competition, (3) the threat of new entrants, (4) bargaining power of suppliers, and (5) bargaining power of consumers. The development of Indonesian shrimp industry pretty good, explained by Porter Diamond Theory analysis. Analysis of Porter Diamond Theory through four main components namely factor conditions; demand condition; related and supporting industries; and firm strategy, structure and rivalry coupled with a two-component supporting (regulatory the government and the factor of chance). Based on the result of this research show that two-component supporting (regulatory the government and the factor of chance) have positive. Related and supporting industries have negative, firm and structure strategy have negative, rivalry has positive, factor condition have positive (except science and technology resources).

  1. Spatial Dynamics of Sea Turtle Abundance and Shrimping Intensity in the U.S. Gulf of Mexico

    Directory of Open Access Journals (Sweden)

    Carrie J. McDaniel

    2000-07-01

    Full Text Available In order to examine the scientific feasibility of area closures for sea turtle protection, we determined the spatial dynamics of sea turtles for the U.S. Gulf of Mexico by analyzing National Marine Fisheries Service (NMFS aerial survey data in September, October, and November of 1992, 1993, and 1994. Turtle sightings were grouped into depth zones and NMFS fishery statistical zones, and strip transect methods were used to estimate the relative abundance of sea turtles in each subzone. Average shrimping intensity was calculated for each subzone for all months of 1992, 1993, and 1994, as well as for the months and locations of the aerial survey. The spatial overlap of sea turtle abundance and shrimping intensity suggested regions where interactions are likely to occur. Sea turtles were observed at much higher rates along the coast of Florida than in the Western Gulf; the highest density of sea turtles was observed in the Florida Keys region (0.525 turtles/km2. Shrimping intensity was highest in the Western Gulf along the coast of Texas and Louisiana, for both annual and fall estimates. Among alternative management scenarios, area closures in conjunction with continued Turtle Excluder Device (TED requirements would probably best prevent sea turtles from future extinction. By implementing shrimping closures off of South Padre Island, Texas, a potential second nesting population of Kemp's ridleys (Lepidochelys kempi could be protected. Closing waters where shrimping intensity is low and sea turtle abundance is high (e.g., South Florida waters would protect sea turtles without economically impacting a large number of shrimpers.

  2. Determination of Contamination Profiles of Human Bacterial Pathogens in Shrimp Obtained from Java, Indonesia

    Energy Technology Data Exchange (ETDEWEB)

    Dewanti-Hariyadi, R. [Center for Assessment of Traditional Foods, Department of Food Technology and Human Nutrition, Bogor Agricultural University (Indonesia); Suliantari,; Nuraida, L. [Department of Food Technology and Human Nutrition, Faculty of Agricultural Technology, Bogor Agricultural University (Indonesia); Fardiaz, S. [Inter University for Food and Nutrition, Bogor Agricultural University, Bogor (Indonesia)

    2005-01-15

    Shrimp continues to be an important export commodity for Indonesia and contributed significantly to the country’s revenue. However, shrimp exports have been frequently rejected by importing countries due to filth, Salmonella and insanitary conditions. This study was conducted to evaluate the profiles of bacterial contamination of ocean and aquaculture shrimp obtained from the area of West, Central and East Java; frozen shrimp and shrimp during industry production of frozen shrimp. The study indicated that both ocean and aquaculture shrimp obtained from the study area were heavily contaminated. On the average, shrimp obtained from West Java were more contaminated than those obtained from East and Central Java. The total bacterial counts were generally higher in ocean shrimp than those of aquaculture ones. Salmonella was present in two of 32 samples of ocean shrimp and in four of 32 samples of aquaculture shrimp obtained from the study area. Vibrio cholerae was not detected in shrimp from West Java, but was found in three out of 16 samples obtained from East and Central Java. V. parahaemolyticus was frequently identified in aquaculture shrimp but absent in fresh ocean shrimp. Studies on shrimp collected from six sampling points during frozen shrimp production revealed that processing will reduce the number of total bacterial, E. coli, and Staphylococal counts. However, the processing did not effectively reduce the incidence of Salmonella or V. parahaemolyticus when the raw material has been contaminated with the pathogens. Sizing and grading as well as arrangement of shrimp before freezing were considered as the critical points where bacteria should be controlled to inhibit growth and cross contamination with bacteria such as Listeria. Implementation of Good Agricultural Practices in production of raw shrimp as well as Hazard Analysis Critical Control Point at the line processing are expected to improve the quality of fresh and frozen shrimp. (author)

  3. Effects of coastal marsh conversion to shrimp aquaculture ponds on CH4 and N2O emissions

    Science.gov (United States)

    Yang, P.; Bastviken, D.; Lai, D. Y. F.; Jin, B. S.; Mou, X. J.; Tong, C.; Yao, Y. C.

    2017-12-01

    In this study, we compared the CH4 and N2O fluxes from a tidal brackish Cyperus malaccensis marsh ecosystem and nearby shrimp ponds, converted from C. malaccensis marsh in the last 3-4 years, in the Min River estuary of southeast China over the aquaculture period of the year. Significant differences in CH4 and N2O fluxes were observed in space (between brackish marsh and shrimp ponds) and in time (between sampling occasions that were distributed over the aquaculture period). CH4 fluxes from the shrimp ponds were on an average 10-fold higher than from the brackish marsh. N2O emissions, on the other hand, were lower from the shrimp pond (25% of the emissions from the brackish marsh). Accessory data indicates that these patterns were primarily linked to water level variability and temperature (all fluxes), sediment porewater sulfate concentrations (CH4 flux) and total nitrogen concentrations (N2O flux). Our research demonstrates that the coastal marsh ecosystem converted to aquaculture ponds considerably alter emissions of CH4 and N2O and provides input to the global discussion on how to account for emissions from various types of flooded land in greenhouse gas inventories.

  4. Characterization of Shrimp Oil from Pandalus borealis by High Performance Liquid Chromatography and High Resolution Mass Spectrometry

    Directory of Open Access Journals (Sweden)

    Guangling Jiao

    2015-06-01

    Full Text Available Northern shrimp (Pandalus borealis oil, which is rich in omega-3 fatty acids, was recovered from the cooking water of shrimp processing facilities. The oil contains significant amounts of omega-3 fatty acids in triglyceride form, along with substantial long-chain monounsaturated fatty acids (MUFAs. It also features natural isomeric forms of astaxanthin, a nutritional carotenoid, which gives the oil a brilliant red color. As part of our efforts in developing value added products from waste streams of the seafood processing industry, we present in this paper a comprehensive characterization of the triacylglycerols (TAGs and astaxanthin esters that predominate in the shrimp oil by using HPLC-HRMS and MS/MS, as well as 13C-NMR. This approach, in combination with FAME analysis, offers direct characterization of fatty acid molecules in their intact forms, including the distribution of regioisomers in TAGs. The information is important for the standardization and quality control, as well as for differentiation of composition features of shrimp oil, which could be sold as an ingredient in health supplements and functional foods.

  5. Supplementing long-chain n-3 polyunsaturated fatty acids in canned wild Pacific pink salmon with Alaska salmon oil

    Science.gov (United States)

    Lapis, Trina J; Oliveira, Alexandra C M; Crapo, Charles A; Himelbloom, Brian; Bechtel, Peter J; Long, Kristy A

    2013-01-01

    Establishing n-3 polyunsaturated fatty acid contents in canned wild Alaska pink salmon products is challenging due to ample natural variation found in lipid content of pink salmon muscle. This study investigated the effect of adding salmon oil (SO) to canned pink salmon produced from fish exhibiting two opposite degrees of skin watermarking, bright (B) and dark (D). Specific goals of the study were to evaluate the benefits of adding SO to canned pink salmon with regard to nutritional value of the product, sensory characteristics, and the oxidative and hydrolytic stability of the lipids over thermal processing. Six groups of canned pink salmon were produced with variable levels of SO, either using bright (with 0, 1, or 2% SO) or dark (with 0, 2, or 4% SO) pink salmon. Compositional analysis revealed highest (P  0.05) ranging from 5.7% to 6.8%. Consequently, addition of SO to canned pink salmon allowed for consistent lipid content between bright and dark fish. Addition of 1% or 2% SO to canned bright pink salmon was not detrimental to the sensory properties of the product. It is recommended that canned bright pink salmon be supplemented with at least 1% SO, while supplementation with 2% SO would guarantee a minimum quantity of 1.9 g of n-3 fatty acids per 100 g of product. Addition of 4% SO to canned dark pink salmon was detrimental to product texture and taste, while supplementation with 2% SO did not negatively affect sensorial properties of the product. Accordingly, canned dark pink salmon should be supplemented with 2% SO so that a minimum n-3 fatty acids content of 1.5 g per 100 g of product. PMID:24804010

  6. Phylogenetics links monster larva to deep-sea shrimp.

    Science.gov (United States)

    Bracken-Grissom, Heather D; Felder, Darryl L; Vollmer, Nicole L; Martin, Joel W; Crandall, Keith A

    2012-10-01

    Mid-water plankton collections commonly include bizarre and mysterious developmental stages that differ conspicuously from their adult counterparts in morphology and habitat. Unaware of the existence of planktonic larval stages, early zoologists often misidentified these unique morphologies as independent adult lineages. Many such mistakes have since been corrected by collecting larvae, raising them in the lab, and identifying the adult forms. However, challenges arise when the larva is remarkably rare in nature and relatively inaccessible due to its changing habitats over the course of ontogeny. The mid-water marine species Cerataspis monstrosa (Gray 1828) is an armored crustacean larva whose adult identity has remained a mystery for over 180 years. Our phylogenetic analyses, based in part on recent collections from the Gulf of Mexico, provide definitive evidence that the rare, yet broadly distributed larva, C. monstrosa, is an early developmental stage of the globally distributed deepwater aristeid shrimp, Plesiopenaeus armatus. Divergence estimates and phylogenetic relationships across five genes confirm the larva and adult are the same species. Our work demonstrates the diagnostic power of molecular systematics in instances where larval rearing seldom succeeds and morphology and habitat are not indicative of identity. Larval-adult linkages not only aid in our understanding of biodiversity, they provide insights into the life history, distribution, and ecology of an organism.

  7. Parallel signatures of selection in temporally isolated lineages of pink salmon

    DEFF Research Database (Denmark)

    Seeb, L. W.; Waples, R. K.; Limborg, M. T.

    2014-01-01

    Studying the effect of similar environments on diverse genetic backgrounds has long been a goal of evolutionary biologists with studies typically relying on experimental approaches. Pink salmon, a highly abundant and widely ranging salmonid, provide a naturally occurring opportunity to study......-associated DNA (RAD) sequencing to discover and genotype approximately 8000 SNP loci in three population pairs of even- and odd-year pink salmon along a latitudinal gradient in North America. We found greater differentiation within the odd-year than within the even-year lineage and greater differentiation...... be particularly informative in understanding adaptive evolution in pink salmon and exploring how differing genetic backgrounds within a species respond to selection from the same natural environment...

  8. Induction of in vivo mutation in chrysanthemum (Dendranthema grandiflora Tzvelev) cv. Pink Repin breeding

    International Nuclear Information System (INIS)

    Neto, Augusto Tulmann; Latado, Rodrigo Rocha

    1997-01-01

    Mutation induction was used with the objective of obtaining mutants for flower colour of chrysanthemum, cv. Repin (pink colour). Rooted cuttings were irradiated with 20 Gy of gamma rays and before the selection the cutting back method was used to advance the generations. The frequency of colour mutants observed was 5.8%. Among the mutants obtainedthe white and dark-pink-coloured ones were evaluated in yield trial and post-harvest. The results indicated that these mutants mantained the same agronomical characteristics showed by the control, with the exception of plant height in the white mutant that was shorter. Due to commercial interest of the producers, these mutants were multiplied and released as new cultivars. The white flower colour mutant was named Cristiane and the dark-pink, Ingrid. This was the first example of cultivars from an ornamental plant released by mutation breeding in Brazil. (author)

  9. The effect of irradiation in the preservation of pink pepper (Schinus terebinthifolius Raddi)

    Science.gov (United States)

    de Souza, Adriana Régia Marques; Arthur, Valter; Nogueira, Danielle Pires

    2012-08-01

    Pink peppers, also known as "pimenta-rosa" and "poivre rose", are the fruit of Schinus terebinthifolius Raddi, a species of pepper cultivated in Brazil, and have great potential for the exploration of uses. In efforts to lengthen the shelf life of this pepper, the purpose of this study was to evaluate the effect of different doses of radiation on its physical composition and color. The pink pepper samples were irradiated with doses of 0, 0.2, 0.4, 0.8 and 1.6 kGy, and the moisture, ash and lipid contents, pH and color were analyzed. The moisture content, lipid content and pH analysis indicated effects due to the irradiation (p>0.05) in which the higher doses resulted in decreases in the attribute. In contrast, there were no significant differences for the ash analysis (ppreservation process for pink peppers.

  10. Diversity of purple nonsulfur bacteria in shrimp ponds with varying mercury levels

    Directory of Open Access Journals (Sweden)

    Kanokwan Mukkata

    2016-07-01

    Full Text Available This research aimed to study the diversity of purple nonsulfur bacteria (PNSB and to investigate the effect of Hg concentrations in shrimp ponds on PNSB diversity. Amplification of the pufM gene was detected in 13 and 10 samples of water and sediment collected from 16 shrimp ponds in Southern Thailand. In addition to PNSB, other anoxygenic phototrophic bacteria (APB were also observed; purple sulfur bacteria (PSB and aerobic anoxygenic phototrophic bacteria (AAPB although most of them could not be identified. Among identified groups; AAPB, PSB and PNSB in the samples of water and sediment were 25.71, 11.43 and 8.57%; and 27.78, 11.11 and 22.22%, respectively. In both sample types, Roseobacter denitrificans (AAPB was the most dominant species followed by Halorhodospira halophila (PSB. In addition two genera, observed most frequently in the sediment samples were a group of PNSB (Rhodovulum kholense, Rhodospirillum centenum and Rhodobium marinum. The UPGMA dendrograms showed 7 and 6 clustered groups in the water and sediment samples, respectively. There was no relationship between the clustered groups and the total Hg (HgT concentrations in the water and sediment samples used (<0.002–0.03 μg/L and 35.40–391.60 μg/kg dry weight for studying the biodiversity. It can be concluded that there was no effect of the various Hg levels on the diversity of detected APB species; particularly the PNSB in the shrimp ponds.

  11. Greater epitope recognition of shrimp allergens by children than by adults suggests that shrimp sensitization decreases with age.

    Science.gov (United States)

    Ayuso, Rosalía; Sánchez-Garcia, Silvia; Lin, Jing; Fu, Zhiyan; Ibáñez, María Dolores; Carrillo, Teresa; Blanco, Carlos; Goldis, Marina; Bardina, Ludmila; Sastre, Joaquín; Sampson, Hugh A

    2010-06-01

    Shellfish allergy is a long-lasting disorder typically affecting adults. Despite its high prevalence, there is limited information about allergenic shrimp proteins and the epitopes implicated in such allergic reactions. We sought to identify the IgE-binding epitopes of the 4 shrimp allergens and to characterize epitope recognition profiles of children and adults with shrimp allergy. Fifty-three subjects, 34 children and 19 adults, were selected with immediate allergic reactions to shrimp, increased shrimp-specific serum IgE levels, and positive immunoblot binding to shrimp. Study subjects and 7 nonatopic control subjects were tested by means of peptide microarray for IgE binding with synthetic overlapping peptides spanning the sequences of Litopenaeus vannamei shrimp tropomyosin, arginine kinase (AK), myosin light chain (MLC), and sarcoplasmic calcium-binding protein (SCP). The Wilcoxon test was used to determine significant differences in z scores between patients and control subjects. The median shrimp IgE level was 4-fold higher in children than in adults (47 vs 12.5 kU(A)/L). The frequency of allergen recognition was higher in children (tropomyosin, 81% [94% for children and 61% for adults]; MLC, 57% [70% for children and 31% for adults]; AK, 51% [67% for children and 21% for adults]; and SCP, 45% [59% for children and 21% for adults]), whereas control subjects showed negligible binding. Seven IgE-binding regions were identified in tropomyosin by means of peptide microarray, confirming previously identified shrimp epitopes. In addition, 3 new epitopes were identified in tropomyosin (epitopes 1, 3, and 5b-c), 5 epitopes were identified in MLC, 3 epitopes were identified in SCP, and 7 epitopes were identified in AK. Interestingly, frequency of individual epitope recognition, as well as intensity of IgE binding, was significantly greater in children than in adults for all 4 proteins. Children with shrimp allergy have greater shrimp-specific IgE antibody levels and

  12. COMPARISON OF CARBON AND NITROGEN FLUXES IN TIDEFLAT FOOD WEBS DOMINATED BY BURROWING SHRIMP OR BY CULTURED OYSTERS

    Science.gov (United States)

    Two species of indigenous, thalassinid burrowing shrimps are pests to the benthic culture of Pacific oysters (Crassostrea gigas) because deposition of sediment excavated by the shrimps buries or smothers the oysters. Carbaryl pesticide is used to reduce burrowing shrimp densitie...

  13. EFTIHIYA – THE NEWEST WINE AROMATIC VARIETY WITH PINK COLORED BERRY

    OpenAIRE

    Zamanidi P. C.; Troshin L. P.; Radchevskiy P. P.

    2014-01-01

    The newest wine grape variety Eftihiya with aromatic pink colored skin (in Greek the name means “happi-ness”) was breed with hybridization at the Athens In-stitute of Viticulture by P. Zamanidi, L. Troshin and P. Radchevskiy in 2005 by crossing the Greek varieties and Malaguzya with Eurasian Traminer pink. Dura-tion of production period from bud burst to harvest 146-155 days. Yields are very high: 25-30 t / ha. Modal mass of clusters is 250 g. Bunch is conical, me-dium density. Berry is mediu...

  14. PINK TOMATO CETUS F1 – PROSPECTS OF THE RUSSIAN MARKET

    Directory of Open Access Journals (Sweden)

    A. Yu. Barbaritskiy

    2017-01-01

    Full Text Available Pink tomato due to their high taste quality is particularly important crop for consumers in Russia. Pink tomato seeds become more popular in the market every year. Breeders have accomplished to combine high fruit taste quality with good transportation abilities and fruit denseness. One of the latest breeding achievement is Cetus F1. A successful combination of good fruit taste with transportability and yield makes this variety a potential leader in Russian market. This is confirmed by growers' trials in various regions of South of Russia. 

  15. I-ST INTERNATIONAL CONFERENCE. "PINK TOMATO. PRODUCTION. CONSUMPTION. MARKET TRENDS IN CENTRAL ASIA».

    Directory of Open Access Journals (Sweden)

    Sh. Alimov

    2015-01-01

    Full Text Available 28 May 2015, in Tashkent, Uzbekistan, the Ist International conference "Pink tomato. Production, consumption, market trends" was held. The problems of breedong, seed production of cultivars and hybrids of pink tomato, as well as increasing of consumer's demand have been considered. The conference has provided good opportunity for meetings of producers, breeders, and researchers from different countries.

  16. Efficacy of pink guava pulp as an antioxidant in raw pork emulsion.

    Science.gov (United States)

    Joseph, Serlene; Chatli, Manish K; Biswas, Ashim K; Sahoo, Jhari

    2014-08-01

    Lipid oxidation-induced quality problems can be minimized with the use of natural antioxidants. The antioxidant potential of pink guava pulp (PGP) was evaluated at different levels (0%; C, 5.0%; T-1, 7.5%; T-2 and 10.0%; T-3) in the raw pork emulsion during refrigerated storage of 9 days under aerobic packaging. Lycopene and β-carotene contents increased (P emulsion than control throughout storage period. Our results indicated that pink guava pulp can be utilized as antioxidants in raw pork products to minimize lipid oxidation, off-odour development, and surface discolouration.

  17. Pseudomonas mesophilica and an unnamed taxon, clinical isolates of pink-pigmented oxidative bacteria.

    Science.gov (United States)

    Gilardi, G L; Faur, Y C

    1984-10-01

    Twenty-one strains of pink-pigmented bacteria, isolated from human clinical specimens and an environmental source, were compared with Pseudomonas mesophilica ATCC 29983 and Protaminobacter ruber ATCC 8457. These isolates were gram-negative, oxidative rods which were motile by means of a single polar flagellum; gave positive catalase, indophenol oxidase, urease, and amylase reactions; and grew slowly at 30 degrees C. Fourteen isolates conformed to the designated type strains Pseudomonas mesophilica ATCC 29983 and Protaminobacter ruber ATCC 8457. The remaining seven strains represented an undescribed taxon. These pink bacteria appear to be invaders of debilitated patients with an underlying chronic disease.

  18. ‘De ongelukkigsten onder de menschen’ De Verbeelding van zenuwzwakte in advertenties voor Pink pillen, 1900-1920

    NARCIS (Netherlands)

    Blok, Gemma; Spijkerman, Rose

    2013-01-01

    abstractBetween 1880 and 1920 Pink Pills, a medication for blood and nerve strengthening, were heavily advertised in Dutch newspapers. The advertisements consisted of the personal stories of patients who had been amazingly healed. This article argues that the Pink Pill advertisements contributed to

  19. Elimination of Chloramphenicol by Tiger Shrimp (Penaeus monodon and White Shrimp (Litopenaeus vannamei

    Directory of Open Access Journals (Sweden)

    Heny Suseno

    2016-07-01

    Full Text Available Chloramphenicol (CAP has been illegally used in many shrimp farms in South East Asia, including Indonesia. We performed an experiment of elimination simulation of CAP in tiger shrimp (Penaeus monodon and white shrimp (Litopenaeus vannamei. After 5 days of depuration process, the concentration of CAP in P. monodon decreased to 94.85% (muscle, 97.98% (cephalothoraxes, and 90.30% (exoskeleton. The elimination half-life of CAP in P monodon was 0.596 day in the muscle, 0.716 day in cephalothorax, and 0.437 day in exoskeleton. On the other hand, concentrations of CAP in L. vannamei decreased to 97.74% (muscle, 90.30% (cephalothoraxes, and 97.63% (exoskeleton. The elimination half-life of CAP in L. vannamei was 0.6624 day (muscle, 0.859 day (cephalothorax, and 0.796 day (exoskeleton. CAP was retained better by P. monodon compared to L. vannamei.

  20. When and How to Worry about OA: Greenland Shrimp Case

    DEFF Research Database (Denmark)

    Kaiser, Brooks; Ravn-Jonsen, Lars

    We use a bio-economic model of the Greenland shrimp fishery to study potential ocean acidification (OA) impacts in arctic resources. Predicted changes in pH in Baffin Bay describe an anticipated though uncertain drop. Efforts to understand changes in shrimp quantity/ quality from OA reflect...... significant uncertainty and ambiguity about direction and magnitude. Estimates on change in growth parameters show a small, statistically insignificant drop that creates expectation of only limited direct biological shifts in the bio-economic model. Indirect changes to shrimp populations in Baffin Bay from...... climate change are anticipated due to expected declines in primary production that then result in equivalent reductions in secondary production, but the range could be positive or negative. Thus, the scientific findings on the OA impacts for shrimp are sufficiently ambiguous that our results find...

  1. Genetic diversity and historical demography of kuruma shrimp ...

    African Journals Online (AJOL)

    ... of kuruma shrimp ( Penaeus japonicus ) species complex off China based on ... of 454-bp at 5' end of mitochondrial DNA control region were conducted. ... analyses suggested a late Pleistocene population expansion for both variety I ...

  2. Sustainable shrimp farming in India - Prospects and challenges

    Digital Repository Service at National Institute of Oceanography (India)

    Achuthankutty, C.T.

    Shrimp farming has grown into a multi-crore industry in India. It has vast potential for further expansion. However, this growing industry needs to develop appropriate indigenous technologies in specific areas to make it a sustainable and profitable...

  3. Physicochemical changes in minimal ozone-treated fresh shrimp ...

    African Journals Online (AJOL)

    treated fresh shrimp were evaluated tandem with microbiological efficacy of treatment during iced storage of up to 10 days. Safely discharged from commercially available domestic-type ozone facility, a previously defined minimal ozone treatment ...

  4. Commercially important penaeid shrimp larvae in the estuaries of Goa

    Digital Repository Service at National Institute of Oceanography (India)

    Achuthankutty, C.T.

    Larval stages of the penaeid shrimps, Metapenaeus dobsoni (Miers), M. affinis (Milne - Edwards) and Penaeus merguiensis De Man were mostly distributed at the lower reaches of Mandovi and Zuari estuaries. While larvae of M. dobsoni and M. affinis...

  5. Genetic diversity of intensive cultured and wild tiger shrimp Penaeus

    African Journals Online (AJOL)

    Mahdi

    2011-02-25

    Feb 25, 2011 ... improvement of brood stock management will assist shrimp breeders to ... heterozygosity; PCR, polymerase chain reaction; MFA, most ... wild females for the supply of juveniles. ... according to the manufacturer's instruction.

  6. Job satisfaction in the shrimp trawl fisheries of Chennai, India

    OpenAIRE

    Bavinck, M.

    2012-01-01

    Shrimp trawling represents an important fishing métier in South India, generating high levels of employment and economic value. It is also a contested métier, ostensibly contributing to environmental degradation and social inequality. This paper investigates the job satisfaction of crew members (captains and workers) on board the shrimp trawlers of Chennai (former Madras). Research took place in 2007 and 2008 (N = 137). Results suggest a general satisfaction with being in the fishery. However...

  7. Green Approaches to Extract Astaxanthin from Shrimp Waste

    DEFF Research Database (Denmark)

    Razi Parjikolaei, Behnaz; Errico, Massimiliano; El-Houri, Rime Bahij

    2016-01-01

    Sunflower oil and its methyl ester have recently been shown as potential green solvents which could substitute traditional organic solvents. This study investigates the economic feasibility of using these green solvents to extract astaxanthin from shrimp processing waste. The feasibility of comme......Sunflower oil and its methyl ester have recently been shown as potential green solvents which could substitute traditional organic solvents. This study investigates the economic feasibility of using these green solvents to extract astaxanthin from shrimp processing waste. The feasibility...

  8. Can fractal methods applied to video tracking detect the effects of deltamethrin pesticide or mercury on the locomotion behavior of shrimps?

    Science.gov (United States)

    Tenorio, Bruno Mendes; da Silva Filho, Eurípedes Alves; Neiva, Gentileza Santos Martins; da Silva, Valdemiro Amaro; Tenorio, Fernanda das Chagas Angelo Mendes; da Silva, Themis de Jesus; Silva, Emerson Carlos Soares E; Nogueira, Romildo de Albuquerque

    2017-08-01

    Shrimps can accumulate environmental toxicants and suffer behavioral changes. However, methods to quantitatively detect changes in the behavior of these shrimps are still needed. The present study aims to verify whether mathematical and fractal methods applied to video tracking can adequately describe changes in the locomotion behavior of shrimps exposed to low concentrations of toxic chemicals, such as 0.15µgL -1 deltamethrin pesticide or 10µgL -1 mercuric chloride. Results showed no change after 1min, 4, 24, and 48h of treatment. However, after 72 and 96h of treatment, both the linear methods describing the track length, mean speed, mean distance from the current to the previous track point, as well as the non-linear methods of fractal dimension (box counting or information entropy) and multifractal analysis were able to detect changes in the locomotion behavior of shrimps exposed to deltamethrin. Analysis of angular parameters of the track points vectors and lacunarity were not sensitive to those changes. None of the methods showed adverse effects to mercury exposure. These mathematical and fractal methods applicable to software represent low cost useful tools in the toxicological analyses of shrimps for quality of food, water and biomonitoring of ecosystems. Copyright © 2017 Elsevier Inc. All rights reserved.

  9. Effect of co-culture of Chinese shrimp ( Fenneropenaeus chinensis) and sea cucumber ( Apostichopus japonicus Selenka) on pond environment

    Science.gov (United States)

    Yu, Haibo; Gao, Qinfeng; Dong, Shuanglin; Sun, Yongjun; Wang, Fang

    2016-10-01

    Monoculture of sea cucumber (pond S) and polyculture of shrimp with sea cucumber (pond SS) were established to evaluate the effect of shrimp on the environmental conditions of sea cucumber farming pond. Contributions of sediment organic matter (SOM2) resuspended from benthic sediment and the suspended particulate organic matter (SPOM) deposited from the water column to the precipitated organic matter (SOM1) collected with sediment traps were estimated with carbon stable isotope analysis. The results showed that the levels of SPOM and SOM2 in pond SS significantly decreased in comparison with those in pond S at the end of experiment ( P sea cucumber farming pond could purify the farming water. Carbon stable isotope analysis showed that the proportion of SOM2 in SOM1 in pond SS (84.97% ± 0.38%) was significantly lower than that in pond S (95.20% ± 0.30%) ( P < 0.05), suggesting that the resuspension of organic matter from benthic sediment into overlying water was reduced in polyculture pond. In contrast, the proportion of SPOM in SOM1 in pond SS (15.03% ± 0.38%) was significantly higher than that in pond S (4.80% ± 0.30%) ( P < 0.05), indicating that the sedimentation of SPOM from water column was enhanced in pond SS owing to the biodeposition effect of shrimp.

  10. Price transmission in the trans-atlantic northern shrimp value chain

    DEFF Research Database (Denmark)

    Nielsen, Max; Ankamah-Yeboah, Isaac; Staahl, Lisa

    2018-01-01

    affect northern shrimp fisheries. In this paper, price transmission in the trans-Atlantic northern shrimp value chain is analysed using a Vector Auto Regressive model in Error Correction form. Cointegration, the Law of One Price (LOP) and weak exogeneity are tested. The results reveal linkages from......Recent research has found that markets for farmed shrimp and wild-caught northern shrimp in Europe are integrated, indicating that northern shrimp prices are affected by total supply and demand of shrimp. Thus, the continued growth of global aquaculture production and associated price decline...

  11. North Kalimantan is Free From EMS (Early Mortality Syndrome) in the Shrimps

    OpenAIRE

    Lestiawan, Sab; Jati, Nugroho Sasongko; Wiro, Hermas

    2014-01-01

    The acute hepatopancreatic necrosis syndrome (AHPNS) or also known worldwide as early mortility syndrome (EMS) is very dangerous for the shrimps industry since it really strikes the shrimps by larvae size. The EMS attacks shrimps at 20 to 30 days of age and at 40 days of age as well. All the shrimps that are being infected will be dead righ away. The EMS has caused the significant economic losses in the shrimps industry due to the mass mortality of the shrimps in Vietnam (in the years of 2010...

  12. POTENTIAL USE OF ORGANIC MINERAL AS MINERAL SOURCE FOR DIET OF JUVENILE VANNAMEI SHRIMP, Penaeus vannamei

    Directory of Open Access Journals (Sweden)

    Asda Laining

    2015-06-01

    Full Text Available The use of organic mineral (OM has been recently introduced in aquaculture both as feed supplement and water quality improvement. A feeding experiment was conducted to evaluate a response dose of OM on growth, survival, and mineral content in whole the body and carapace of vannamei shrimp (Penaeus vannamei. Three diets were supplemented with different levels of organic mineral at 1 (OM1, 2 (OM2 and 4 (OM4 g/100 g diet. Positive control was a diet without OM inclusion but supplemented with commercial mineral mixture at level of 4 g/100 g diet. Juvenile vannamei shrimp with average initial body weight of 3.5±0.1 g were stocked into 12 tanks with a capacity of 200 L. After 75 days feeding trial, highly significant weight gains was observed in shrimp fed OM at all levels compared to the positive control. However, no significant differences were found among dietary OM groups. The growth response was clearly shown by the same values of SGRs in the three OM supplemented groups (1.1%/d and only differed significantly from positive control. Increasing of dietary OM significantly improved survival rate of shrimp where the highest was observed in group fed OM1 and the lowest was in control diet. Effect of dietary OM on whole body Ca and P were quite similar while whole body Ca and P content of OM1 group was slightly high and tended to decrease in two groups with higher level dietary OM. However, no significant differences among the treatment groups. A clear response of supplementing OM in diet was detected on whole body Zn content. Increase of dietary OM resulted in an increase of Zn content in whole body. The effect was clearly shown when diet contained 2% and 4% OM. Carapace Ca content was highly significant when diet contained 2% OM. Similar to whole body Zn content, there was also a linear trend of response dose of dietary OM on carapace Zn content which the highest was found in dietary OM4. Based on growth, survival rate, and Zn

  13. PINK1-Parkin alleviates metabolic stress induced by obesity in adipose tissue and in 3T3-L1 preadipocytes.

    Science.gov (United States)

    Cui, Chen; Chen, Shihong; Qiao, Jingting; Qing, Li; Wang, Lingshu; He, Tianyi; Wang, Chuan; Liu, Fuqiang; Gong, Lei; Chen, Li; Hou, Xinguo

    2018-04-06

    Mitochondria play an important role in cellular metabolism and are closely related with metabolic stress. Recently, several studies have shown that mitophagy mediated by PTEN-induced putative kinase 1 (PINK1) and Parkin may play a critical role in clearing the damaged mitochondria and maintaining the overall balance of intracellular mitochondria in quality and quantity. A previous study showed that PINK1 and Parkin were overexpressed in adipose tissue in obese subjects. However, it is still unclear whether a direct relationship exists between obesity and mitophagy. In this study, we created a high-fat-diet (HFD)-induced obese mouse model and examined the expression of PINK1 and Parkin in adipose tissue using western blot and real-time quantitative PCR. After we confirmed that there is an interesting difference between regular-chow-fed mice and HFD-induced obese mice in the expression of PINK1 and Parkin in vivo, we further tested the expression of PINK1 and Parkin in 3T3-L1 preadipocytes in vitro by treating cells with palmitic acid (PA) to induce metabolic stress. To better understand the role of PINK1 and Parkin in metabolic stress, 3T3-L1 preadipocytes were transfected with small interfering RNA (siRNA) of PINK1 and Parkin followed by PA treatment. Our results showed that under lower concentrations of PA, PINK1 and Parkin can be activated and play a protective role in resisting the harmful effects of PA, including protecting the mitochondrial function and resisting cellular death, while under higher concentrations of PA, the expression of PINK1 and Parkin can be inhibited. These results suggest that PINK1-Parkin can protect mitochondrial function against metabolic stress induced by obesity or PA to a certain degree. Copyright © 2018 Elsevier Inc. All rights reserved.

  14. Integrated mangrove-shrimp cultivation: Potential for blue carbon sequestration.

    Science.gov (United States)

    Ahmed, Nesar; Thompson, Shirley; Glaser, Marion

    2018-05-01

    Globally, shrimp farming has had devastating effects on mangrove forests. However, mangroves are the most carbon-rich forests, with blue carbon (i.e., carbon in coastal and marine ecosystems) emissions seriously augmented due to devastating effects on mangrove forests. Nevertheless, integrated mangrove-shrimp cultivation has emerged as a part of the potential solution to blue carbon emissions. Integrated mangrove-shrimp farming is also known as organic aquaculture if deforested mangrove area does not exceed 50% of the total farm area. Mangrove destruction is not permitted in organic aquaculture and the former mangrove area in parts of the shrimp farm shall be reforested to at least 50% during a period of maximum 5 years according to Naturland organic aquaculture standards. This article reviews integrated mangrove-shrimp cultivation that can help to sequester blue carbon through mangrove restoration, which can be an option for climate change mitigation. However, the adoption of integrated mangrove-shrimp cultivation could face several challenges that need to be addressed in order to realize substantial benefits from blue carbon sequestration.

  15. STRATEGIES FOR DEVELOPING SUSTAINABLE AND COMPETITIVE CLUSTER FOR SHRIMP INDUSTRY

    Directory of Open Access Journals (Sweden)

    Anas M. Fauzi

    2012-09-01

    Full Text Available Kampung Vannamei as shrimp cluster is being developed since 2004 by PT CP Prima, tbk Surabaya through Shrimp Culture Health Management transformation technology to several traditional farmers in Gresik, Lamongan, Tuban, and Madura areas. The research objectives aims to identify and mapping of stakeholder, to analyze interaction of stakeholders, to formulate strategy from internal and external environment factors and to set priority on strategy to develop sustainable and competitive shrimp cluster in the Kampung vannamei. Primary data was collected through stakeholders’ discussion forums, questionnaires, and interviews with relevant actors. Observations to the business unit also performed to determine the production and business conditions, particularly in capturing information about the threat and challenges. While the secondary data is used in policy documents national and local area statistics, and relevant literature. Analyses were performed by using the SRI International cluster pyramid, diamond porter’s analysis, SWOT and Matrix TOWS analysis, and analytical hierarchy process. Analyses were performed by the methods discussed in qualitative and descriptive. There are 7 strategies could be implemented to develop sustainable and competitive shrimp cluster. However, it is recommended to implement the strategy base on priority, which the first priority is strategy to improve linkages between businesses in the upstream and downstream industries into multi stakeholders’ platform in shrimp industry.Keywords: Shrimp, Cluster, Competitiveness, Diamond Porter, SWOT Analysis, AHP

  16. Effect of bioactive peptides (BPs) on the development of Pacific white shrimp ( Litopenaeus vannamei Boone, 1931)

    Science.gov (United States)

    Wang, Guangjun; Yu, Ermeng; Li, Zhifei; Yu, Deguang; Wang, Haiying; Gong, Wangbao

    2016-06-01

    The present study was conducted to evaluate the feasibility of replacing fish meal (FM) with bioactive peptides (BPs) in diet of white shrimp ( Litopenaeus vannamei). The changes in growth performance, body composition, non-specific immunity, and water quality were examined after the shrimp were fed four diets, in which 0% (control), 33.3%, 66.7% and 100% of FM was replaced by BPs, respectively. The groups were designated as Con, 1/3BPs, 2/3BPs, and 3/3BPs. A total of 720 shrimp with an initial body weight of 1.46 ± 0.78 g were fed the experimental diets for 56 days. The results revealed that: 1) the weight gain rate (WGR) in 1/3BPs, 2/3BPs, and 3/3BPs was significantly higher than that in Con ( P < 0.05), while no significant difference was found on survival rate and feed conversion ratio (FCR); 2) the whole-body crude protein (CP) and crude lipids (CL) were significantly different among groups, while there was no significant difference between crude ash and phosphorus contents; 3) the levels of acid phosphatase (ACP), lysozyme (LZM), superoxide dismutase (SOD), phenol oxidase (PO) and bactericidal activity increased significantly with the inclusion of BPs; 4) in terms of water quality, no significant difference was found in pH and dissolved oxygen among diets during the whole experimental period. Moreover, even though nitrite and ammonium levels tended to increase with time, there was no significant difference among groups. The results indicated that BPs is an applicable alternative of protein source, which can substitute FM in the diets of L. vannamei; it is able to effectively promote growth performance and improve immunity. Moreover, BPs in the diets had no negative impact on water quality.

  17. Effect of Adding the White Legged Shrimp (Penaeus vannamei) on Growth and Survival of Tiger Shrimp (Penaeus monodon) in Intensive Farming

    OpenAIRE

    . Tarsim

    2007-01-01

    This experiment was carried out in the framework of a project to develop a viable shrimp polyculture technology under intensive farming. The objectives were to assess the effect of adding white legged shrimp (Penaeus vannamei) on growth and survival of tiger shrimp (Penaeus monodon) in intensive Farming. Tiger shrimp were stocked in 2800-3400 m2 earthen ponds at 40 individuals/m2 and reared for 133 days. White legged shrimp added at 70 day at 8±2 individuals/m2. Growth rate and total yield af...

  18. Impact simulation of shrimp farm effluent on BOD-DO in Setiu River

    Science.gov (United States)

    Chong, Michael Sueng Lock; Teh, Su Yean; Koh, Hock Lye

    2017-08-01

    Release of effluent from intensive aquaculture farms into a river can pollute the receiving river and exert negative impacts on the aquatic ecosystem. In this paper, we simulate the effects of effluent released from a marine shrimp aquaculture farm into Sg Setiu, focusing on two critical water quality parameters i.e. DO (dissolved oxygen) and BOD (biochemical oxygen demand). DO is an important constituent in a river in sustaining water quality, with levels of DO below 5 mg/L deemed undesirable. DO levels can be depressed by the presence of BOD and other organics that consume DO. Water quality simulations in conjunction with management of effluent treatment can suggest mitigation measures for reducing the adverse environmental impact. For this purpose, an in-house two-dimensional water quality simulation model codenamed TUNA-WQ will be used for these simulations. TUNA-WQ has been undergoing regular updates and improvements to broaden the applicability and to improve the robustness. Here, the model is calibrated and verified for simulation of DO and BOD dynamics in Setiu River (Sg Setiu). TUNA-WQ simulated DO and BOD in Setiu River due to the discharge from a marine shrimp aquaculture farm will be presented.

  19. Comparative spring mechanics in mantis shrimp.

    Science.gov (United States)

    Patek, S N; Rosario, M V; Taylor, J R A

    2013-04-01

    Elastic mechanisms are fundamental to fast and efficient movements. Mantis shrimp power their fast raptorial appendages using a conserved network of exoskeletal springs, linkages and latches. Their appendages are fantastically diverse, ranging from spears to hammers. We measured the spring mechanics of 12 mantis shrimp species from five different families exhibiting hammer-shaped, spear-shaped and undifferentiated appendages. Across species, spring force and work increase with size of the appendage and spring constant is not correlated with size. Species that hammer their prey exhibit significantly greater spring resilience compared with species that impale evasive prey ('spearers'); mixed statistical results show that species that hammer prey also produce greater work relative to size during spring loading compared with spearers. Disabling part of the spring mechanism, the 'saddle', significantly decreases spring force and work in three smasher species; cross-species analyses show a greater effect of cutting the saddle on the spring force and spring constant in species without hammers compared with species with hammers. Overall, the study shows a more potent spring mechanism in the faster and more powerful hammering species compared with spearing species while also highlighting the challenges of reconciling within-species and cross-species mechanical analyses when different processes may be acting at these two different levels of analysis. The observed mechanical variation in spring mechanics provides insights into the evolutionary history, morphological components and mechanical behavior, which were not discernible in prior single-species studies. The results also suggest that, even with a conserved spring mechanism, spring behavior, potency and component structures can be varied within a clade with implications for the behavioral functions of power-amplified devices.

  20. First stage larva of the mud shrimp Nihonotrypaea makarovi Marin, 2013 (Decapoda: Axiidea: Callianassidae) obtained in the laboratory.

    Science.gov (United States)

    Korn, Olga M; Kornienko, Elena S; Golubinskaya, Darya D

    2016-02-19

    First stage larva of a new mud shrimp Nihonotrypaea makarovi Marin, 2013 (Decapoda: Axiidea: Callianassidae) obtained from the ovigerous female is described and illustrated for the first time. The first zoea of N. makarovi is well distinguished from the first larvae of N. japonica and N. petalura, sympatric callianassid species inhabiting Russian waters of the Sea of Japan, only by the greater size and by the presence of two terminal setae on the antennal endopod.

  1. Control strategy for viral diseases of salmonid fish, flounders and shrimp at hatchery and seed production facility in Japan

    OpenAIRE

    Yoshimizu, Mamoru

    2009-01-01

    Salmonid fish are important species for hatchery reared and released fish. Flounders and shrimp are also important species for seed production and sea-farming in Japan. Viral disease is one of the limitations of successful propagation of these species. Methods currently used to control viral diseases are 1) hygiene and sanitation in facilities, 2) disinfection of rearing and waste water using U. V. irradiation, ozonization and electrolyzation, 3) selection of pathogen-free brood stock by cell...

  2. Physicochemical and functional characteristics of radiation-processed shrimp chitosan

    Energy Technology Data Exchange (ETDEWEB)

    Ocloo, F.C.K., E-mail: fidelis_ocloo@yahoo.co [Biotechnology and Nuclear Agriculture Research Institute, Ghana Atomic Energy Commission, P.O. Box LG 80, Legon (Ghana); Quayson, E.T. [Department of Biochemistry, University of Cape Coast, Cape Coast (Ghana); Adu-Gyamfi, A.; Quarcoo, E.A.; Asare, D. [Biotechnology and Nuclear Agriculture Research Institute, Ghana Atomic Energy Commission, P.O. Box LG 80, Legon (Ghana); Serfor-Armah, Y. [National Nuclear Research Institute, Ghana Atomic Energy Commission, P.O. Box LG 80, Legon (Ghana); Woode, B.K. [Department of Biochemistry, University of Cape Coast, Cape Coast (Ghana)

    2011-07-15

    The effects of gamma irradiation on chitosan samples were determined in terms of physicochemical and functional properties. Shrimp chitosan was extracted from shell using a chemical process involving demineralization, deproteinization, decolorization and deacetylation. Commercial snow chitosan was also used. Samples (in a solid state) were given irradiation dose of 25 kGy at a dose rate of 1.1013 kGy/h in air and 0 kGy samples were used as controls. Results showed that moisture contents were between 8.690% and 13.645%. There were no significant differences (P>0.05) in the degree of deacetylation of the chitosan samples. Significant differences (P<0.05) were observed in the viscosity and viscosity-average molecular weight of the chistosan samples. Viscosity and molecular weight decreased when the samples were given the irradiation dose of 25 kGy. Chitosan samples had low antioxidant activity compared with BHT. Water binding capacity ranged from 582.40% to 656.75% and fat binding capacity was between 431.00% and 560.55%. Irradiation had a major effect on the viscosity and the viscosity-average molecular weight of the chitosan samples.

  3. Physicochemical and functional characteristics of radiation-processed shrimp chitosan

    International Nuclear Information System (INIS)

    Ocloo, F.C.K.; Quayson, E.T.; Adu-Gyamfi, A.; Quarcoo, E.A.; Asare, D.; Serfor-Armah, Y.; Woode, B.K.

    2011-01-01

    The effects of gamma irradiation on chitosan samples were determined in terms of physicochemical and functional properties. Shrimp chitosan was extracted from shell using a chemical process involving demineralization, deproteinization, decolorization and deacetylation. Commercial snow chitosan was also used. Samples (in a solid state) were given irradiation dose of 25 kGy at a dose rate of 1.1013 kGy/h in air and 0 kGy samples were used as controls. Results showed that moisture contents were between 8.690% and 13.645%. There were no significant differences (P>0.05) in the degree of deacetylation of the chitosan samples. Significant differences (P<0.05) were observed in the viscosity and viscosity-average molecular weight of the chistosan samples. Viscosity and molecular weight decreased when the samples were given the irradiation dose of 25 kGy. Chitosan samples had low antioxidant activity compared with BHT. Water binding capacity ranged from 582.40% to 656.75% and fat binding capacity was between 431.00% and 560.55%. Irradiation had a major effect on the viscosity and the viscosity-average molecular weight of the chitosan samples.

  4. Geomagnetic imprinting predicts spatio-temporal variation in homing migration of pink and sockeye salmon.

    Science.gov (United States)

    Putman, Nathan F; Jenkins, Erica S; Michielsens, Catherine G J; Noakes, David L G

    2014-10-06

    Animals navigate using a variety of sensory cues, but how each is weighted during different phases of movement (e.g. dispersal, foraging, homing) is controversial. Here, we examine the geomagnetic and olfactory imprinting hypotheses of natal homing with datasets that recorded variation in the migratory routes of sockeye (Oncorhynchus nerka) and pink (Oncorhynchus gorbuscha) salmon returning from the Pacific Ocean to the Fraser River, British Columbia. Drift of the magnetic field (i.e. geomagnetic imprinting) uniquely accounted for 23.2% and 44.0% of the variation in migration routes for sockeye and pink salmon, respectively. Ocean circulation (i.e. olfactory imprinting) predicted 6.1% and 0.1% of the variation in sockeye and pink migration routes, respectively. Sea surface temperature (a variable influencing salmon distribution but not navigation, directly) accounted for 13.0% of the variation in sockeye migration but was unrelated to pink migration. These findings suggest that geomagnetic navigation plays an important role in long-distance homing in salmon and that consideration of navigation mechanisms can aid in the management of migratory fishes by better predicting movement patterns. Finally, given the diversity of animals that use the Earth's magnetic field for navigation, geomagnetic drift may provide a unifying explanation for spatio-temporal variation in the movement patterns of many species. © 2014 The Author(s) Published by the Royal Society. All rights reserved.

  5. The Coming Right-Brain Economy: Daniel H. Pink Says the MFA Is the New MBA

    Science.gov (United States)

    Connection: The Journal of the New England Board of Higher Education, 2005

    2005-01-01

    According to a recent "Harvard Business Review" piece by author Daniel H. Pink, MBA graduates are, in many ways, becoming this century's blue-collar workers--people who entered a workforce that was full of promise only to see their jobs move overseas. At the same time, businesses are realizing that the only way to differentiate their goods and…

  6. The mixed Ax-Lindemann theorem and its applications to the Zilber-Pink conjecture

    NARCIS (Netherlands)

    Gao, Ziyang

    2014-01-01

    The Zilber-Pink conjecture is a common generalization of the Andre-Oort and the Mordell-Lang conjectures. In this dissertation, we study its sub-conjectures: Andre-Oort, which predicts that a subvariety of a mixed Shimura variety having dense intersection with the set of special points is special;

  7. Demography and monitoring of Welsh's milkweed (Asclepias welshii) at Coral Pink Sand Dunes

    Science.gov (United States)

    Brent C. Palmer; L. Armstrong

    2001-01-01

    Results are presented of a 12-year monitoring program on the Coral Pink Sand Dunes and Sand Hills populations of the threatened Welsh's milkweed, Asclepias welshii N & P Holmgren. The species is an early sera1 member of the dune flora, colonizing blowouts and advancing with shifting dunes. When an area stabilizes and other vegetation encroaches, A. welshii is...

  8. Elegant lady a pink longiflorum lily cultivar suitable for cut flower forcing

    NARCIS (Netherlands)

    Lim Ki-Byung,; Tuyl, van J.M.

    2004-01-01

    A new pink longiflorum (Lilium longiflorum x (L. longiforum x L. rubellum)) lily cultivar was obtained by integrated intersectional hybridization techniques. The F1 intersectional hybrid was obtained by crossing between L. longiflorum 'Gelria' and wild type L. rubellum. Since the F1 hybrid was

  9. Geomagnetic imprinting predicts spatio-temporal variation in homing migration of pink and sockeye salmon

    Science.gov (United States)

    Putman, Nathan F.; Jenkins, Erica S.; Michielsens, Catherine G. J.; Noakes, David L. G.

    2014-01-01

    Animals navigate using a variety of sensory cues, but how each is weighted during different phases of movement (e.g. dispersal, foraging, homing) is controversial. Here, we examine the geomagnetic and olfactory imprinting hypotheses of natal homing with datasets that recorded variation in the migratory routes of sockeye (Oncorhynchus nerka) and pink (Oncorhynchus gorbuscha) salmon returning from the Pacific Ocean to the Fraser River, British Columbia. Drift of the magnetic field (i.e. geomagnetic imprinting) uniquely accounted for 23.2% and 44.0% of the variation in migration routes for sockeye and pink salmon, respectively. Ocean circulation (i.e. olfactory imprinting) predicted 6.1% and 0.1% of the variation in sockeye and pink migration routes, respectively. Sea surface temperature (a variable influencing salmon distribution but not navigation, directly) accounted for 13.0% of the variation in sockeye migration but was unrelated to pink migration. These findings suggest that geomagnetic navigation plays an important role in long-distance homing in salmon and that consideration of navigation mechanisms can aid in the management of migratory fishes by better predicting movement patterns. Finally, given the diversity of animals that use the Earth's magnetic field for navigation, geomagnetic drift may provide a unifying explanation for spatio-temporal variation in the movement patterns of many species. PMID:25056214

  10. Superoxide dismutating molecules rescue the toxic effects of PINK1 and parkin loss.

    Science.gov (United States)

    Biosa, Alice; Sanchez-Martinez, Alvaro; Filograna, Roberta; Terriente-Felix, Ana; Alam, Sarah M; Beltramini, Mariano; Bubacco, Luigi; Bisaglia, Marco; Whitworth, Alexander J

    2018-05-01

    Reactive oxygen species exert important functions in regulating several cellular signalling pathways. However, an excessive accumulation of reactive oxygen species can perturb the redox homeostasis leading to oxidative stress, a condition which has been associated to many neurodegenerative disorders. Accordingly, alterations in the redox state of cells and mitochondrial homeostasis are established hallmarks in both familial and sporadic Parkinson's disease cases. PINK1 and Parkin are two genes which account for a large fraction of autosomal recessive early-onset forms of Parkinson's disease and are now firmly associated to both mitochondria and redox homeostasis. In this study we explored the hypothesis that superoxide anions participate in the generation of the Parkin and PINK1 associated phenotypic effect by testing the capacity of endogenous and exogenous superoxide dismutating molecules to rescue the toxic effects induced by loss of PINK1 or Parkin, in both cellular and fly models. Our results demonstrate the positive effect of an increased level of superoxide dismutase proteins on the pathological phenotypes, both in vitro and in vivo. A more pronounced effectiveness for mitochondrial SOD2 activity points to the superoxide radicals generated in the mitochondrial matrix as the prime suspect in the definition of the observed phenotypes. Moreover, we also demonstrate the efficacy of a SOD-mimetic compound, M40403, to partially ameliorate PINK1/Parkin phenotypes in vitro and in vivo. These results support the further exploration of SOD-mimetic compounds as a therapeutic strategy against Parkinson's disease.

  11. Complete Genome Sequence of Methylobacterium populi P-1M, Isolated from Pink-Pigmented Household Biofilm

    OpenAIRE

    Morohoshi, Tomohiro; Ikeda, Tsukasa

    2016-01-01

    Methylobacterium populi P-1M is isolated from the pink-pigmented household biofilm. Here, we present the complete genome sequence of P-1M, consisting of one chromosome of 5,705,640?bp and five plasmids of 64,864?bp, 59,879?bp, 42,569?bp, 41,417?bp, and 29,506?bp.

  12. Genetic and metabolic diversity of pink-pigmented facultative methylotrophs in phyllosphere of tropical plants

    OpenAIRE

    Balachandar, D.; Raja, P.; Sundaram, SP.

    2008-01-01

    Diversity of Pink-Pigmented Facultative Methylotrophs (PPFMs) in phyllosphere of cotton, maize and sunflower was determined based on differential carbon-substrate utilization profile and Random Amplified Polymorphic DNA data. Results indicate that six diversified groups of PPFMs are found in these crops. Sunflower and maize phyllosphere harbor four different groups of methylobacteria while cotton has only two groups.

  13. Genetic and metabolic diversity of pink-pigmented facultative methylotrophs in phyllosphere of tropical plants.

    Science.gov (United States)

    Balachandar, D; Raja, P; Sundaram, Sp

    2008-01-01

    Diversity of Pink-Pigmented Facultative Methylotrophs (PPFMs) in phyllosphere of cotton, maize and sunflower was determined based on differential carbon-substrate utilization profile and Random Amplified Polymorphic DNA data. Results indicate that six diversified groups of PPFMs are found in these crops. Sunflower and maize phyllosphere harbor four different groups of methylobacteria while cotton has only two groups.

  14. Pop nädal : Pink muutis taas imagot. Billboard 200 TOP 20 / Karolina Põder

    Index Scriptorium Estoniae

    Põder, Karolina

    2002-01-01

    Ameerika popstaarist Pink (Alecia Moorist). Crazy Town'i uuest albumist "Darkhorse". Hard Rock Club' üritusest Biker's Pubis Tallinnas 5. okt.. Impaled Nazarene HR STAR üritusel Nõmme kultuurimajas 25. okt.. Saksa popkuulsuse Alphaville saabumisest Riiga Krasdtmala festivalile 4. oktoobril

  15. A comparative study of LRRK2, PINK1 and genetically undefined familial Parkinson's disease.

    Science.gov (United States)

    Nishioka, Kenya; Kefi, Mounir; Jasinska-Myga, Barbara; Wider, Christian; Vilariño-Güell, Carles; Ross, Owen A; Heckman, Michael G; Middleton, Lefkos T; Ishihara-Paul, Lianna; Gibson, Rachel A; Amouri, Rim; Ben Yahmed, Samia; Ben Sassi, Samia; Zouari, Mourad; El Euch, Ghada; Farrer, Matthew J; Hentati, Faycal

    2010-04-01

    Genetic classification of Parkinson's disease (PD) subtypes may become the preferred diagnostic tool for neurologists. Herein we compare clinical features from a large cohort of patients with familial PD of unknown aetiology or attributable to distinct genetic forms. Comprehensive neurological examinations were performed in 231 familial PD patients from Tunisia. Analysis was previously performed to screen for mutations in leucine rich repeat kinase 2 (LRRK2), PTEN induced kinase 1 (PINK1) and parkin (PRKN). Clinical features were compared between patients with genetically undefined PD (n=107) and those with LRRK2 (n=73) and PINK1 (n=42) mutations using regression analyses adjusted for gender, age of onset and disease duration. PRKN cases (n=9) were too few for meaningful statistical analysis. In comparison with genetically undefined patients, LRRK2 mutation carriers had more severe motor symptoms (median Unified Parkinson's Disease Rating Scale scores approximately 1.6 times higher, pundefined patients. As expected, PINK1 patients had younger ages and ages at disease onset, and a longer disease duration compared with LRRK2 mutation carriers and genetically undefined patients. Clinical differences between LRRK2, PINK1 and genetically undefined familial PD appear more pronounced than previously appreciated, and may prove useful in clinical practice. As future therapies are targeted to specific protein abnormalities, identifying the genetic causes and associated clinical and pathological features will determine diagnosis, preventative medicine and drug intervention strategies.

  16. Why girls go pink: Game character identification and game-players’ motivations

    NARCIS (Netherlands)

    van Reijmersdal, Eva A.; Jansz, Jeroen; Peters, O.; van Noort, Guda

    2013-01-01

    Based on social role theory and uses and gratifications, this study provides insights into the popularity of so-called pink games. This study is the first to examine the roles of identification, playing time, and age in the experience of motivations while playing an online role-playing game. Drawing

  17. Why girls go pink: game character identification and game-players’ motivations

    NARCIS (Netherlands)

    van Reijmersdal, E.A.; Jansz, J.; Peters, O.; van Noort, G.

    2013-01-01

    Based on social role theory and uses and gratifications, this study provides insights into the popularity of so-called pink games. This study is the first to examine the roles of identification, playing time, and age in the experience of motivations while playing an online role-playing game. Drawing

  18. Pink Tea to Proactive: CCET's Transition Years, 1961-1982, as I Remember Them

    Science.gov (United States)

    Thompson, Alvin H.

    2015-01-01

    Alvin Thompson, former president of the California Council on the Education of Teachers (CCET), describes how he became involved with the CCET, and how the cultural environment of the CCET shifted from a "Pink Tea" society to one of political action focused on the real needs of the schools for which teachers are prepared. Thompson…

  19. Evaluation of pond lands utilization and study of organic matter spatial distribution of Vanname shrimp (Litopenaeus vannamei aquaculture in the coastal area of Lamongan Regency

    Directory of Open Access Journals (Sweden)

    Insani L.

    2018-04-01

    Full Text Available Coastal areas have a wide range of resources that can be utilized in multiple ways. Land utilization of coastal areas has been done for various interests, one of which is for shrimp aquaculture (farming. Continuous shrimp farming activities will lead to environmental degradation, characterized by decreased water quality. Besides, the area or spatial arrangement of shrimp aquaculture development that does not pay attention to the environmental carrying capacity due to improper management can cause environmental problems with all aspects of its complications in a long period of time, one of which is the problem emerging from shrimp farming with the use of intensive technology. Intensive shrimp farming can produce organic wastes, primarily from the residual feed, feces, and dissolved matters discharged into waters that significantly affect the quality of the coastal environment. This study aimed to determine the distribution pattern of organic matters resulted from Vanname shrimp (Litopenaeus vannamei aquaculture in the coastal area of Lamongan Regency. This study was conducted from January to March 2018. The study used a descriptive method with Geographical Information System (GIS approach. The spatial distribution analysis of organic materials was carried out using geostatistical analysis, by interpolating point data into areas (polygons using IDW method. The interpolation results of each water quality of the ponds, river, and coastal waters were arranged in the form of thematic maps. The value pollution load index (PLI value of the shrimp farming activities was determined based on six main indicators, namely dissolved oxygen, BOD5, TOM, Ammonia, Nitrate, and Phosphate. Based on the results obtained, the highest spatial distribution value of organic matters was showed by the BOD parameter of 3.12 mg/l – 3.25 mg/l, included in the medium-polluted category. Meanwhile, the measurement result of the phosphate content as an indicator of water

  20. The bioenergetic status relates to dopamine neuron loss in familial PD with PINK1 mutations.

    Directory of Open Access Journals (Sweden)

    Rüediger Hilker

    Full Text Available Mutations in the PINK1 gene cause autosomal recessive familial Parkinson's disease (PD. The gene encodes a mitochondrial protein kinase that plays an important role in maintaining mitochondrial function and integrity. However, the pathophysiological link between mutation-related bioenergetic deficits and the degenerative process in dopaminergic neurons remains to be elucidated. We performed phosphorous ((31P and proton ((1H 3-T magnetic resonance spectroscopic imaging (MRSI in 11 members of a German family with hereditary PD due to PINK1 mutations (PARK6 compared to 23 age-matched controls. All family members had prior 18-Fluorodopa (FDOPA positron emission tomography (PET. The striatal FDOPA uptake was correlated with quantified metabolic brain mapping in MRSI. At group level, the heterozygous PINK1 mutation carriers did not show any MRSI abnormalities relative to controls. In contrast, homozygous individuals with manifest PD had putaminal GPC, PCr, HEP and β-ATP levels well above the 2SD range of controls. Across all subjects, the FDOPA K(i values correlated positively with MI (r = 0.879, p<0.001 and inversely with β-ATP (r = -0.784, p = 0.008 and GPC concentrations (r = -0.651, p = 0.030 in the putamen. Our combined imaging data suggest that the dopaminergic deficit in this family with PD due to PINK1 mutations relates to osmolyte dysregulation, while the delivery of high energy phosphates was preserved. Our results corroborate the hypothesis that PINK1 mutations result in reduced neuronal survival, most likely due to impaired cellular stress resistance.

  1. Evidence of Neurobiological Changes in the Presymptomatic PINK1 Knockout Rat.

    Science.gov (United States)

    Ferris, Craig F; Morrison, Thomas R; Iriah, Sade; Malmberg, Samantha; Kulkarni, Praveen; Hartner, Jochen C; Trivedi, Malav

    2018-01-01

    Genetic models of Parkinson's disease (PD) coupled with advanced imaging techniques can elucidate neurobiological disease progression, and can help identify early biomarkers before clinical signs emerge. PTEN-induced putative kinase 1 (PINK1) helps protect neurons from mitochondrial dysfunction, and a mutation in the associated gene is a risk factor for recessive familial PD. The PINK1 knockout (KO) rat is a novel model for familial PD that has not been neuroradiologically characterized for alterations in brain structure/function, alongside behavior, prior to 4 months of age. To identify biomarkers of presymptomatic PD in the PINK1 -/- rat at 3 months using magnetic resonance imaging techniques. At postnatal weeks 12-13; one month earlier than previously reported signs of motor and cognitive dysfunction, this study combined imaging modalities, including assessment of quantitative anisotropy across 171 individual brain areas using an annotated MRI rat brain atlas to identify sites of gray matter alteration between wild-type and PINK1 -/- rats. The olfactory system, hypothalamus, thalamus, nucleus accumbens, and cerebellum showed differences in anisotropy between experimental groups. Molecular analyses revealed reduced levels of glutathione, ATP, and elevated oxidative stress in the substantia nigra, striatum and deep cerebellar nuclei. Mitochondrial genes encoding proteins in Complex IV, along with mRNA levels associated with mitochondrial function and genes involved in glutathione synthesis were reduced. Differences in brain structure did not align with any cognitive or motor impairment. These data reveal early markers, and highlight novel brain regions involved in the pathology of PD in the PINK1 -/- rat before behavioral dysfunction occurs.

  2. PINK1 heterozygous mutations induce subtle alterations in dopamine-dependent synaptic plasticity

    Science.gov (United States)

    Madeo, G.; Schirinzi, T.; Martella, G.; Latagliata, E.C.; Puglisi, F.; Shen, J.; Valente, E.M.; Federici, M.; Mercuri, N.B.; Puglisi-Allegra, S.; Bonsi, P.; Pisani, A.

    2014-01-01

    Background Homozygous or compound heterozygous mutations in the PTEN-induced kinase 1 (PINK1) gene are causative of autosomal recessive, early onset PD. Single heterozygous mutations have been repeatedly detected in a subset of patients as well as in non-affected subjects, and their significance has long been debated. Several neurophysiological studies from non-manifesting PINK1 heterozygotes have shown the existence of neural plasticity abnormalities, indicating the presence of specific endophenotypic traits in the heterozygous state. Methods In the present study, we performed a functional analysis of corticostriatal synaptic plasticity in heterozygous PINK1 knock-out (PINK1+/−) mice by a multidisciplinary approach. Results We found that, despite a normal motor behavior, repetitive activation of cortical inputs to striatal neurons failed to induce long-term potentiation (LTP), whereas long-term depression (LTD) was normal. Although nigral dopaminergic neurons exhibited normal morphological and electrophysiological properties with normal responses to dopamine receptor activation, we measured a significantly lower dopamine release in the striatum of PINK1+/−, compared to control mice, suggesting that a decrease in stimulus-evoked dopamine overflow acts as a major determinant for the LTP deficit. Accordingly, pharmacological agents capable of increasing the availability of dopamine in the synaptic cleft restored a normal LTP in heterozygous mice. Moreover, MAO-B inhibitors rescued a physiological LTP and a normal dopamine release. Conclusions Our results provide novel evidence for striatal plasticity abnormalities even in the heterozygous disease state. These alterations might be considered an endophenotype to this monogenic form of PD, and a valid tool to characterize early disease stage and design possible disease-modifying therapies. PMID:24167038

  3. Silencing of PINK1 expression affects mitochondrial DNA and oxidative phosphorylation in dopaminergic cells.

    Directory of Open Access Journals (Sweden)

    Matthew E Gegg

    Full Text Available Mitochondrial dysfunction has been implicated in the pathogenesis of Parkinson's disease (PD. Impairment of the mitochondrial electron transport chain (ETC and an increased frequency in deletions of mitochondrial DNA (mtDNA, which encodes some of the subunits of the ETC, have been reported in the substantia nigra of PD brains. The identification of mutations in the PINK1 gene, which cause an autosomal recessive form of PD, has supported mitochondrial involvement in PD. The PINK1 protein is a serine/threonine kinase localized in mitochondria and the cytosol. Its precise function is unknown, but it is involved in neuroprotection against a variety of stress signalling pathways.In this report we have investigated the effect of silencing PINK1 expression in human dopaminergic SH-SY5Y cells by siRNA on mtDNA synthesis and ETC function. Loss of PINK1 expression resulted in a decrease in mtDNA levels and mtDNA synthesis. We also report a concomitant loss of mitochondrial membrane potential and decreased mitochondrial ATP synthesis, with the activity of complex IV of the ETC most affected. This mitochondrial dysfunction resulted in increased markers of oxidative stress under basal conditions and increased cell death following treatment with the free radical generator paraquat.This report highlights a novel function of PINK1 in mitochondrial biogenesis and a role in maintaining mitochondrial ETC activity. Dysfunction of both has been implicated in sporadic forms of PD suggesting that these may be key pathways in the development of the disease.

  4. RESPONSE OF GHOST SHRIMP (NEOTRYPAEA CALIFORNIENSIS) BIOTURBATION TO ORGANIC MATTER ENRICHMENT OF ESTUARINE INTERTIDAL SEDIMENTS

    Science.gov (United States)

    Populations of burrowing shrimp (Neotrypaea californiensis and Upogebia p;ugettensis) are the dominant invertebrate fauna on Pacific estuarine tide flats, occupying >80% of intertidal area in some estuaries. Burrowing shrimp are renowned for their bioturbation of intertidal sedi...

  5. 78 FR 33347 - Certain Frozen Warmwater Shrimp From Ecuador: Preliminary Negative Countervailing Duty Determination

    Science.gov (United States)

    2013-06-04

    ... States (``HTSUS''), are products which are processed from warmwater shrimp and prawns through freezing..., spices or sauce are included in the scope. In addition, food preparations (including dusted shrimp...

  6. Simulating environmental effects on brown shrimp production in the northern Gulf of Mexico

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Brown shrimp (Farfantepenaeus aztecus) are a commercially important fishery species of the northern Gulf of Mexico. Young shrimp settle in estuarine salt marsh...

  7. Economic Data Collection for Gulf of Mexico South Atlantic Shrimp Fisheries

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Annual Economic Survey of Federal Gulf and Atlantic Shrimp Permit Holders collects data about operating expenses and costs of owning and maintaining shrimp...

  8. Use of slaughter house waste as a feed for shrimps and prawns

    Digital Repository Service at National Institute of Oceanography (India)

    Sumitra-Vijayaraghavan; Royan, J.P.; Krishnakumari, L.

    Feeding experiments with some shrimps and fishes (Metapenaeus monoceros, Metapenaeus dobsoni, Sarotherodon mossambicus and Etroplus suratensis) using slaughter house waste as food, showed that the shrimps and arotherodon were able to utilize...

  9. Carbon Monoxide, Nitric Oxide, and Nitrogen Dioxide Levels in Gas Ovens Related to Surface Pinking of Cooked Beef and Turkey.

    Science.gov (United States)

    Cornforth; Rabovitser; Ahuja; Wagner; Hanson; Cummings; Chudnovsky

    1998-01-19

    Carbon monoxide (CO) and total nitrogen oxide (NO(x)()) levels were monitored during meat cookery with a standard Ovenpak and a new ultralow-NO(x)() (ULN) cyclonic gas burner. With the standard burner, CO varied from 103 to 152 ppm, NO(x)() was 1.3-10.7 ppm, and surface pinking was observed on both beef and turkey. The ULN burner at optimal efficiency produced only 6.7 ppm of CO and 1 ppm of NO(x)(), insufficient to cause surface pinking. To determine the relative contribution of CO and NO(x)() to pinking, trials were also conducted in an electric oven with various pure gases. Pinking was not observed with up to 149 ppm of CO or 5 ppm of NO. However, as little as 0.4 ppm of nitrogen dioxide (NO(2)) caused pinking of turkey rolls. Beef roasts were pink at >2.5 ppm of NO(2). Thus, pinking previously attributed to CO and NO in gas ovens is instead due to NO(2), which has much greater reactivity than NO with moisture at meat surfaces.

  10. Parkinson phenotype in aged PINK1-deficient mice is accompanied by progressive mitochondrial dysfunction in absence of neurodegeneration.

    Directory of Open Access Journals (Sweden)

    Suzana Gispert

    Full Text Available BACKGROUND: Parkinson's disease (PD is an adult-onset movement disorder of largely unknown etiology. We have previously shown that loss-of-function mutations of the mitochondrial protein kinase PINK1 (PTEN induced putative kinase 1 cause the recessive PARK6 variant of PD. METHODOLOGY/PRINCIPAL FINDINGS: Now we generated a PINK1 deficient mouse and observed several novel phenotypes: A progressive reduction of weight and of locomotor activity selectively for spontaneous movements occurred at old age. As in PD, abnormal dopamine levels in the aged nigrostriatal projection accompanied the reduced movements. Possibly in line with the PARK6 syndrome but in contrast to sporadic PD, a reduced lifespan, dysfunction of brainstem and sympathetic nerves, visible aggregates of alpha-synuclein within Lewy bodies or nigrostriatal neurodegeneration were not present in aged PINK1-deficient mice. However, we demonstrate PINK1 mutant mice to exhibit a progressive reduction in mitochondrial preprotein import correlating with defects of core mitochondrial functions like ATP-generation and respiration. In contrast to the strong effect of PINK1 on mitochondrial dynamics in Drosophila melanogaster and in spite of reduced expression of fission factor Mtp18, we show reduced fission and increased aggregation of mitochondria only under stress in PINK1-deficient mouse neurons. CONCLUSION: Thus, aging Pink1(-/- mice show increasing mitochondrial dysfunction resulting in impaired neural activity similar to PD, in absence of overt neuronal death.

  11. Effect of irradiation on nutrient quality of the frozen shelled shrimp

    International Nuclear Information System (INIS)

    Fu Junjie; Liu Bojing

    2004-01-01

    The effects of irradiation on nutrient quality including amino acids, protein, fatty acids, Vitamin A, and Vitamin E in the refrigerated shelled sea shrimp and river shrimp were studied. The results showed that there was no significant change on protein, fatty acids and amino acids of irradiation 2kGy at shrimps compared with the non-irradiated shrimp. Vitamin A, and Vitamin E were decreased with the increasing of dose

  12. Impact of value chain governance on the development of small scale shrimp farmers in Vietnam

    OpenAIRE

    T. M. H. Ho; P. Burny

    2016-01-01

    Purpose of this paper is to identify the tendency of shrimp value chain development and impact of its governance on the small scale shrimp farmers in Vietnam. Design/methodology/approach - Data from the shrimp farmers surveys in Mekong delta, Vietnam from 2008-2010 with the update information in 2014 were taken to analyse by the value chain analysis method. Findings – Traditional governance type of the shrimp value chain in the early state (before 2004) showed the different levels of coordina...

  13. Impact of value chain governance on the development of small scale shrimp farmers in Vietnam

    OpenAIRE

    Ho Thi Minh, Hop; Burny, Philippe

    2016-01-01

    Purpose of this paper is to identify the tendency of shrimp value chain development and impact of its governance on the small scale shrimp farmers in Vietnam. Design/methodology/approach - Data from the shrimp farmers surveys in Mekong delta, Vietnam from 2008-2010 with the update information in 2014 were taken to analyse by the value chain analysis method. Findings – Traditional governance type of the shrimp value chain in the early state (before 2004) showed the different levels of co...

  14. Global and local governance of shrimp farming in the Mekong Delta, Vietnam

    OpenAIRE

    Tran Thi Thu, H.

    2012-01-01

    The Mekong Delta is one of seven ecological regions in Vietnam where aquaculture and shrimp products are internationally traded and the shrimp farmers are firmly embedded in a global system of production and trade. The growth of shrimp aquaculture, in addition to population growth and higher levels of investment, has left coastal resources in the Mekong Delta increasingly vulnerable to rapid changes in land and resource use. The shrimp industry, made up of multiple stakeholders and fragmente...

  15. The effect of gamma irradiation on the growth and flowering of stem chrysanthemum (chrysanthemum morifolium ramat.) cv. pink fiji

    International Nuclear Information System (INIS)

    Ita Dwimahyani

    2007-01-01

    Rooted shoot cuttings have been irradiated by gamma rays with 0, 10, 15, 20 and 25 Gy doses, and then planted in green house on Gadog, Ciawi. Plant growth from each doses proved to be varied, both in height and flowering process. Plants with dose 15 Gy and higher had shown late flowering time and dwarfing. The optimal dose for chrysanthemum cv. Pink Fiji irradiation is suggested to be 10-15 Gy. The highest mutation frequency shown on flower color is yellow, followed by orange, white, dark pink and light pink. (author)

  16. Effect of weather factors on the incidence and development of pink bollworm on flowers of advance cotton genotypes

    International Nuclear Information System (INIS)

    Khaliq, A.; Subhani, M.N.; Hassan, S.W.; Afzal, M.

    2008-01-01

    Ten advance genotypes of cotton Viz. BH-121, NIAB KRISHMA, DNH-137, VH-142, VH-142 BH-125, MNH-635, SLH-267, FNH-245, CRIS-467 and CRIS-82 were used to determine the effect of different weather factors on the incidence and development of pink bollworm (Pectinophora gossyiella) infestation at Nuclear institute for Agriculture and Biology (NIAB) Faisalabad. Trials were laid out using Randomized Complete Block Design (RCBD) with four replications. Finally data were subjected to statistical analysis and for correlation studies between weather factors and pink bollworm. Temperature and relative humidity and rainfall affected negatively for the infestation of pink bollworm on flowers in advance genotypes of cotton. (author)

  17. Effects of acute change in salinity and moulting on the infection of white leg shrimp (Penaeus vannamei) with white spot syndrome virus upon immersion challenge.

    Science.gov (United States)

    Van Thuong, K; Van Tuan, V; Li, W; Sorgeloos, P; Bossier, P; Nauwynck, H

    2016-12-01

    In the field, moulting and salinity drop in the water due to excessive rainfall have been mentioned to be risk factors for WSSV outbreaks. Therefore, in this study, the effect of an acute change in environmental salinity and shedding of the old cuticle shell on the susceptibility of Penaeus vannamei to WSSV was evaluated by immersion challenge. For testing the effect of abrupt salinity stress, early premoult shrimp that were acclimated to 35 g L -1 were subjected to salinities of 50 g L -1 , 35 g L -1 , 20 g L -1 , 10 g L -1 and 7 g L -1 or 5 g L -1 and simultaneously exposed to 10 5.5  SID 50 mL -1 of WSSV for 5 h, after which the salinity was brought back to 35 g L -1 . Shrimp that were transferred from 35 g L -1 to 50 g L -1 , 35 g L -1 and 20 g L -1 did not become infected with WSSV. Shrimp became infected with WSSV after an acute salinity drop from 35 g L -1 to 10 g L -1 and lower. The mortality in shrimp, subjected to a salinity change to 10 g L -1 , 7 g L -1 and 5 g L -1 , was 6.7%, 46.7% and 53.3%, respectively (P shrimp in early premoult, moulting and post-moult were immersed in sea water containing 10 5.5  SID 50 mL -1 of WSSV. The resulting mortality due to WSSV infection in shrimp inoculated during early premoult (0%), ecdysis (53.3%) and post-moult (26.72%) demonstrated that a significant difference exists in susceptibility of shrimp during the short moulting process (P shrimp are at risk for a WSSV infection. These findings have important implications for WSSV control measures. © 2016 John Wiley & Sons Ltd.

  18. Strong population genetic structure and larval dispersal capability of the burrowing ghost shrimp (Neotrypaea californiensis)

    Science.gov (United States)

    The burrowing ghost shrimp, Neotrypaea californiensis, is a vital member of the estuarine benthic community. Dense populations of shrimp are found in the major estuaries of Washington and Oregon. Our study determines the genetic structure of shrimp populations in order to gain ...

  19. Analysis of Salmonella sp bacterial contamination on Vannamei Shrimp using binary logit model approach

    Science.gov (United States)

    Oktaviana, P. P.; Fithriasari, K.

    2018-04-01

    Mostly Indonesian citizen consume vannamei shrimp as their food. Vannamei shrimp also is one of Indonesian exports comodities mainstay. Vannamei shrimp in the ponds and markets could be contaminated by Salmonella sp bacteria. This bacteria will endanger human health. Salmonella sp bacterial contamination on vannamei shrimp could be affected by many factors. This study is intended to identify what factors that supposedly influence the Salmonella sp bacterial contamination on vannamei shrimp. The researchers used the testing result of Salmonella sp bacterial contamination on vannamei shrimp as response variable. This response variable has two categories: 0 = if testing result indicate that there is no Salmonella sp on vannamei shrimp; 1 = if testing result indicate that there is Salmonella sp on vannamei shrimp. There are four factors that supposedly influence the Salmonella sp bacterial contamination on vannamei shrimp, which are the testing result of Salmonella sp bacterial contamination on farmer hand swab; the subdistrict of vannamei shrimp ponds; the fish processing unit supplied by; and the pond are in hectare. This four factors used as predictor variables. The analysis used is Binary Logit Model Approach according to the response variable that has two categories. The analysis result indicates that the factors or predictor variables which is significantly affect the Salmonella sp bacterial contamination on vannamei shrimp are the testing result of Salmonella sp bacterial contamination on farmer hand swab and the subdistrict of vannamei shrimp ponds.

  20. 75 FR 44229 - Certain Frozen Warmwater Shrimp from India: Preliminary Results of Antidumping Duty Changed...

    Science.gov (United States)

    2010-07-28

    ... shrimp and prawns through freezing and which are sold in any count size. The products described above may... are packed with marinade, spices or sauce are included in the scope of this order. In addition, food... to IQF freezing immediately after application of the dusting layer. Battered shrimp is a shrimp-based...

  1. 78 FR 50385 - Certain Frozen Warmwater Shrimp from India: Final Affirmative Countervailing Duty Determination

    Science.gov (United States)

    2013-08-19

    ... Shrimp Co.; JBS Packing Co., Inc.; Lafitte Frozen Foods Corp.; M&M Shrimp (Biloxi Freezing and Processing... prawns through freezing and which are sold in any count size. The products described above may be..., spices or sauce are included in the scope. In addition, food preparations (including dusted shrimp...

  2. 75 FR 51756 - Certain Frozen Warmwater Shrimp From India: Notice of Rescission of Antidumping Duty Changed...

    Science.gov (United States)

    2010-08-23

    ... shrimp and prawns through freezing and which are sold in any count size. The products described above may... are packed with marinade, spices or sauce are included in the scope of this order. In addition, food... subjected to IQF freezing immediately after application of the dusting layer. Battered shrimp is a shrimp...

  3. Livelihood Capabilities and Pathways of Shrimp Farmers in the Mekong Delta, Vietnam

    NARCIS (Netherlands)

    Tran Thi Phung Ha, Ha; Dijk, van J.W.M.; Bosma, R.H.; Sinh, L.X.

    2013-01-01

    Shrimp farming is a major livelihood activity in the Mekong Delta in the southernmost part of Vietnam. The Vietnamese government has promoted shrimp farming as a way to reduce poverty, provide employment opportunities and increase exports to support economic development. The shrimp farming system,

  4. Global and local governance of shrimp farming in the Mekong Delta, Vietnam

    NARCIS (Netherlands)

    Tran Thi Thu, H.

    2012-01-01

    The Mekong Delta is one of seven ecological regions in Vietnam where aquaculture and shrimp products are internationally traded and the shrimp farmers are firmly embedded in a global system of production and trade. The growth of shrimp aquaculture, in addition to population growth and higher

  5. 75 FR 48724 - Frozen Warmwater Shrimp From Brazil, China, India, Thailand, and Vietnam

    Science.gov (United States)

    2010-08-11

    ... Warmwater Shrimp From Brazil, China, India, Thailand, and Vietnam AGENCY: United States International Trade... warmwater shrimp from Brazil, China, India, Thailand, and Vietnam. SUMMARY: The Commission hereby gives... warmwater shrimp from Brazil, China, India, Thailand, and Vietnam would be likely to lead to continuation or...

  6. 75 FR 57501 - Frozen Warmwater Shrimp From Brazil, China, India, Thailand, and Vietnam

    Science.gov (United States)

    2010-09-21

    ... Warmwater Shrimp From Brazil, China, India, Thailand, and Vietnam AGENCY: United States International Trade... warmwater shrimp from Brazil, China, India, Thailand, and Vietnam. SUMMARY: The Commission hereby gives... warmwater shrimp from Brazil, China, India, Thailand, and Vietnam would be likely to lead to continuation or...

  7. 75 FR 22424 - Frozen Warmwater Shrimp From Brazil, China, India, Thailand, and Vietnam

    Science.gov (United States)

    2010-04-28

    ... Warmwater Shrimp From Brazil, China, India, Thailand, and Vietnam AGENCY: United States International Trade... antidumping duty orders on frozen warmwater shrimp from Brazil, China, India, Thailand, and Vietnam. SUMMARY... duty orders on frozen warmwater shrimp from Brazil, China, India, Thailand, and Vietnam would be likely...

  8. 77 FR 36998 - Proposed Information Collection; Comment Request; Mandatory Shrimp Vessel and Gear...

    Science.gov (United States)

    2012-06-20

    ... Collection; Comment Request; Mandatory Shrimp Vessel and Gear Characterization Survey AGENCY: National... under the Shrimp Fishery Management Plan (FMP). The regulations for the Gulf Shrimp Vessel and Gear... and Gear Characterization Form. The form will be provided by NMFS at the time of permit application...

  9. 78 FR 40436 - Proposed Information Collection; Comment Request; Mandatory Shrimp Vessel and Gear...

    Science.gov (United States)

    2013-07-05

    ... Collection; Comment Request; Mandatory Shrimp Vessel and Gear Characterization Survey AGENCY: National... under the Shrimp Fishery Management Plan (FMP). The regulations for the Gulf Shrimp Vessel and Gear... Gear Characterization Form. The form will be provided by NMFS at the time of permit application and...

  10. Transmission of white spot syndrome virus (WSSV) from Dendronereis spp. (Peters) (Nereididae) to penaeid shrimp

    NARCIS (Netherlands)

    Haryadi, D.; Verreth, J.A.J.; Verdegem, M.C.J.; Vlak, J.M.

    2015-01-01

    Dendronereis spp. (Peters) (Nereididae) is a common polychaete in shrimp ponds built on intertidal land and is natural food for shrimp in traditionally managed ponds in Indonesia. White spot syndrome virus (WSSV), an important viral pathogen of the shrimp, can replicate in this polychaete (Desrina

  11. 75 FR 22370 - Certain Frozen Warmwater Shrimp From Brazil, Ecuador, India, the People's Republic of China...

    Science.gov (United States)

    2010-04-28

    ...-893, A-549-822, A-552-802] Certain Frozen Warmwater Shrimp From Brazil, Ecuador, India, the People's... certain frozen warmwater shrimp from Brazil, Ecuador, India, the People's Republic of China, Thailand, and... Frozen and Canned Warmwater Shrimp From Ecuador, 69 FR 76913 (December 23, 2004) (Ecuador Final...

  12. 78 FR 50381 - Certain Frozen Warmwater Shrimp From Malaysia: Final Affirmative Countervailing Duty Determination

    Science.gov (United States)

    2013-08-19

    ... Corp.; M&M Shrimp (Biloxi Freezing and Processing); Ocean Springs Seafood Market, Inc.; Paul Piazza... to as coldwater shrimp, in any state of processing; (3) fresh shrimp and prawns whether shell-on or... Zones 12. Provision of Seed and Fry for LTAR 13. Loans Under the Fund for Food Program 14. Loans Under...

  13. Data on internal cDNA amplification and color changes of the proteins derived from Pacific white leg shrimp shell.

    Science.gov (United States)

    Chuang, Pan; Shoichiro, Ishizaki; Yuji, Nagashima; Jialong, Gao; Shugo, Watabe

    2018-02-01

    In this article, we report original data on the designation of the primers for full-length cDNA amplification and the internal cDNA amplification of red color-related pigment-binding protein derived from shrimp shell. Data on the color shifts of different soluble proteins under 100 °C 10 min heat treatment and the effects of heating temperatures (from 30 to 100 °C) on the color changes of crude water-soluble proteins are also included in this report. For further details and experimental findings please refer to the article "Isolation and cDNA cloning of a novel red color-related pigment-binding protein derived from the shell of shrimp, Litopenaeus vannamei " (Chuang et al., 2017) [1].

  14. The almost invisible league: crypsis and association between minute fishes and shrimps as a possible defence against visually hunting predators

    Directory of Open Access Journals (Sweden)

    Lucélia Nobre Carvalho

    Full Text Available Camouflage is one of the most widespread defence modes used by substrate-dwelling animals, whereas transparency is generally found in open-water organisms. Both these defence types are regarded as effective against visually guided predators. We present here three assemblages of similarly-sized freshwater fish and shrimp species which apparently rely on camouflage and transparency to evade some of their potential predators. In one of the associations, there is a transition from cryptic colours and translucency to transparency of the component species according to the position each of them occupies in the habitat. The likeness between the fishes and the shrimps is here regarded as a type of protective association similar to numerical or social mimicry. Additionally, we suggest that the assemblage may contain Batesian-like mimicry components.

  15. Data on internal cDNA amplification and color changes of the proteins derived from Pacific white leg shrimp shell

    Directory of Open Access Journals (Sweden)

    Pan Chuang

    2018-02-01

    Full Text Available In this article, we report original data on the designation of the primers for full-length cDNA amplification and the internal cDNA amplification of red color-related pigment-binding protein derived from shrimp shell. Data on the color shifts of different soluble proteins under 100 °C 10 min heat treatment and the effects of heating temperatures (from 30 to 100 °C on the color changes of crude water-soluble proteins are also included in this report. For further details and experimental findings please refer to the article “Isolation and cDNA cloning of a novel red color-related pigment-binding protein derived from the shell of shrimp, Litopenaeus vannamei” (Chuang et al., 2017 [1].

  16. Combined environmental stress from shrimp farm and dredging releases in a subtropical coastal lagoon (SE Gulf of California).

    Science.gov (United States)

    Cardoso-Mohedano, J G; Páez-Osuna, F; Amezcua-Martínez, F; Ruiz-Fernández, A C; Ramírez-Reséndiz, G; Sanchez-Cabeza, J A

    2016-03-15

    Nutrient pollution causes environmental damages on aquatic ecosystems worldwide. Eutrophication produces impacts in coastal ecosystems, affecting biota and ecosystem services. The Urias coastal lagoon (SE Gulf of California) is a sub-tropical estuary under several environmental pressures such as nutrient inputs from shrimp farm effluents and dredging related to port operations, which can release substances accumulated in sediments. We assessed the water quality impacts caused by these activities and results showed that i) nitrogen was the limiting nutrient, ii) shrimp farm effluents increased particulate organic matter and chlorophyll a in the receiving stations, and iii) dredging activities increased nitrite and reduced dissolved oxygen concentrations. The co-occurrence of the shrimp farm releases and dredging activities was likely the cause of a negative synergistic effect on water quality which mainly decreases dissolved oxygen and increases nitrite concentrations. Coastal zone management should avoid the co-occurrence of these, and likely others, stressors in coastal ecosystems. Copyright © 2016 Elsevier Ltd. All rights reserved.

  17. Evaluation of dietary soybean meal as fish meal replacer for juvenile whiteleg shrimp, Litopenaeus vannamei reared in biofloc system

    Directory of Open Access Journals (Sweden)

    Hyeonho Yun

    2017-01-01

    Full Text Available Abstract Different levels of dietary soybean meal (SBM as a fish meal (FM replacer, with and without amino acid supplementation, for whiteleg shrimp, Litopenaeus vannamei reared in the biofloc system was examined in eight weeks of feeding trial. Eight experimental diets consisted of a basal diet with 0% FM replacement by SBM provided in clear sea water without biofloc system (S0SW, four diets replacing FM at 0% (S0, 33% (S33, 67% (S67 and 100% (S100 by SBM, and three diets replacing FM at 33% (S33A, 67% (S67A and 100% (S100A by SBM supplemented with amino acids (methionine and lysine in the seawater biofloc system. Results of water quality analyses showed significantly lower total suspended solids and nitrate for S0SW group than all other treatments. Diets S0 and S33A resulted in higher weight gain and specific growth rate among all groups, with no significant differences with S33 group. In addition, whole-body protein and amino acid compositions of shrimp fed S0SW were lower than most biofloc groups. Haemolymph parameters showed significant differences in total protein, cholesterol and triglyceride between groups S0 and S0SW. Also, superoxide dismutase activity showed a decreasing trend with increasing replacement level. In conclusion, based on these results, SBM could replace up to 33% of FM with or without amino acid supplementation in juvenile whiteleg shrimp diets reared in the biofloc system.

  18. Current status of viral diseases in Indian shrimp aquaculture.

    Science.gov (United States)

    Tandel, G M; John, K Riji; Rosalind George, M; Prince Jeyaseelan, M J

    The intensification of aquaculture has been unique in showing the overwhelming changes in global food production in the last 100 years. Presently, it is playing a vital role in the economies of several countries. Conversely, it is also to be noted that the progression of aquaculture has been the foundation of anthropogenic alteration of a gigantic hierarchy and hence not astonishingly, it resulted in spread and emergence of an increasing group of new unknown diseases. In India, Penaeus monodon, black tiger shrimp was previously the foremost-cultivated shrimp species. Subsequently in 2008, the American white leg shrimp Litopenaeus vannamei has effectively replaced it. The change in dominant species has affected disease concerns in India as well as in world shrimp aquaculture. White spot syndrome virus (WSSV) is the most deleterious for both species. Hepatopancreatic parvovirus (HPV), Monodon baculovirus (MBV) and Infectious hypodermal and hematopoietic necrosis virus (IHHNV) are the other significant infectious agents of P. monodon and L. vannamei. An emerging disease of loose shell syndrome (LSS) was already reported from India during late 1998. A more recent disease of L. vannamei in India is monodon slow growth syndrome (MSGS), a component of which seems to be Laem-Singh virus (LSNV). Thus, most of the information in this review relates to new emerging pathogens that threaten the cultivation shrimp industry in India.

  19. Magnetically tunable oil droplet lens of deep-sea shrimp

    Science.gov (United States)

    Iwasaka, M.; Hirota, N.; Oba, Y.

    2018-05-01

    In this study, the tunable properties of a bio-lens from a deep-sea shrimp were investigated for the first time using magnetic fields. The skin of the shrimp exhibited a brilliantly colored reflection of incident white light. The light reflecting parts and the oil droplets in the shrimp's skin were observed in a glass slide sample cell using a digital microscope that operated in the bore of two superconducting magnets (maximum strengths of 5 and 13 T). In the ventral skin of the shrimp, which contained many oil droplets, some comparatively large oil droplets (50 to 150 μm in diameter) were present. A distinct response to magnetic fields was found in these large oil droplets. Further, the application of the magnetic fields to the sample cell caused a change in the size of the oil droplets. The phenomena observed in this work indicate that the oil droplets of deep sea shrimp can act as lenses in which the optical focusing can be modified via the application of external magnetic fields. The results of this study will make it possible to fabricate bio-inspired soft optical devices in future.

  20. The human PINK1 locus is regulated in vivo by a non-coding natural antisense RNA during modulation of mitochondrial function

    Directory of Open Access Journals (Sweden)

    Wahlestedt Claes

    2007-03-01

    Full Text Available Abstract Background Mutations in the PTEN induced putative kinase 1 (PINK1 are implicated in early-onset Parkinson's disease. PINK1 is expressed abundantly in mitochondria rich tissues, such as skeletal muscle, where it plays a critical role determining mitochondrial structural integrity in Drosophila. Results Herein we characterize a novel splice variant of PINK1 (svPINK1 that is homologous to the C-terminus regulatory domain of the protein kinase. Naturally occurring non-coding antisense provides sophisticated mechanisms for diversifying genomes and we describe a human specific non-coding antisense expressed at the PINK1 locus (naPINK1. We further demonstrate that PINK1 varies in vivo when human skeletal muscle mitochondrial content is enhanced, supporting the idea that PINK1 has a physiological role in mitochondrion. The observation of concordant regulation of svPINK1 and naPINK1 during in vivo mitochondrial biogenesis was confirmed using RNAi, where selective targeting of naPINK1 results in loss of the PINK1 splice variant in neuronal cell lines. Conclusion Our data presents the first direct observation that a mammalian non-coding antisense molecule can positively influence the abundance of a cis-transcribed mRNA under physiological abundance conditions. While our analysis implies a possible human specific and dsRNA-mediated mechanism for stabilizing the expression of svPINK1, it also points to a broader genomic strategy for regulating a human disease locus and increases the complexity through which alterations in the regulation of the PINK1 locus could occur.

  1. Emerging viral diseases of fish and shrimp

    Science.gov (United States)

    Winton, James R.; Walker, Peter J.

    2010-01-01

    The rise of aquaculture has been one of the most profound changes in global food production of the past 100 years. Driven by population growth, rising demand for seafood and a levelling of production from capture fisheries, the practice of farming aquatic animals has expanded rapidly to become a major global industry. Aquaculture is now integral to the economies of many countries. It has provided employment and been a major driver of socio-economic development in poor rural and coastal communities, particularly in Asia, and has relieved pressure on the sustainability of the natural harvest from our rivers, lakes and oceans. However, the rapid growth of aquaculture has also been the source of anthropogenic change on a massive scale. Aquatic animals have been displaced from their natural environment, cultured in high density, exposed to environmental stress, provided artificial or unnatural feeds, and a prolific global trade has developed in both live aquatic animals and their products. At the same time, over-exploitation of fisheries and anthropogenic stress on aquatic ecosystems has placed pressure on wild fish populations. Not surprisingly, the consequence has been the emergence and spread of an increasing array of new diseases. This review examines the rise and characteristics of aquaculture, the major viral pathogens of fish and shrimp and their impacts, and the particular characteristics of disease emergence in an aquatic, rather than terrestrial, context. It also considers the potential for future disease emergence in aquatic animals as aquaculture continues to expand and faces the challenges presented by climate change.

  2. Extreme morphologies of mantis shrimp larvae

    Directory of Open Access Journals (Sweden)

    Carolin Haug

    Full Text Available ABSTRACT Larvae of stomatopods (mantis shrimps are generally categorized into four larval types: antizoea, pseudozoea (both representing early larval stages, alima and erichthus (the latter two representing later larval stages. These categories, however, do not reflect the existing morphological diversity of stomatopod larvae, which is largely unstudied. We describe here four previously unknown larval types with extreme morphologies. All specimens were found in the collections of the Zoological Museum, University of Copenhagen and were collected during the Danish Dana Expedition round the world 1928-30. These new larval types all represent erichthus-type larvae, especially differing in their shield morphologies. The shield morphology ranges from almost spherical to rather disc-like, with sometimes extremely elongated spines, but only a general systematic assignment of the larvae was possible. Further investigations of these larvae are crucial to understand their life habits and ecological impact, especially as stomatopod and other crustacean larvae might have a much more important position in the marine ecosystems than their corresponding adults.

  3. Shrimp cephalothorax meal in laying hen diets

    International Nuclear Information System (INIS)

    Salas-Duran, Catalina; Chacon-Villalobos, Alejandro; Zamora-Sanchez, Laura

    2015-01-01

    The effect of shrimp meal (SM) was measure in commercial laying hen diets. Pleuroncodes planipes was used in Costa Rica, from April to September 2013, to obtain a meal (SM) with a yield of 15%, particle size of 256 μg and negative for Salmonella sp. Proximate analysis was performed to the SM: crude protein (40,67%), ether extract (11,05%), crude fiber (7,12%), ash (27,48%), calcium (9,03%), phosphorus (2,66%), amino acid profile, pepsin digestibility (84%) and acidity (8,34). Subsequently, a trial was performed with 140 40-week-old Hy-Line Brown laying hens, fed with four different diets containing increasing levels of inclusion of SM (0%, 5%, 10%, and 15%) during four weeks; and formulated according to the ideal protein and digestible amino acids concepts; being isocaloric and isoproteic. The variables experimentally evaluated were: production percentage, feed intake, body weight, mortality, egg weight and feed conversion ratio. Only egg weight changed significantly between treatments in the third week (p [es

  4. Scanning electron microscopy and swelling test of shrimp shell chitosan and chitosan-RGD scaffolds

    Science.gov (United States)

    Mandacan, M. C.; Yuniastuti, M.; Amir, L. R.; Idrus, E.; Suniarti, D. F.

    2017-08-01

    Shrimp shell chitosan and chitosan-RGD scaffold membranes are produced to be biocompatible with tissue engineering. Nonetheless, their architectural properties have not yet been studied. Analyze the architectural properties of chitosan and chitosan-RGD scaffolds. Analyze pore count and size, interpore distance, and porosity (using SEM testing and ImageJ analysis) and water absorption (using a swelling test). The properties of the chitosan and chitosan-RGD scaffolds were as follows, respectively. The pore counts were 225 and 153; pore size, 171.4 μam and 180.2 μam interpore distance, 105.7 μam and 101.4 μam porosity, 22% and 10.2%; and water absorption, 9.1 mgH2O/mgScaffold and 19.3 mgH2O/mgScaffold. The shrimp shell chitosan-RGD membrane scaffold was found to have architectural properties that make it more conducive to use in tissue engineering.

  5. Antibiotic Resistance of Salmonella spp. Isolated from Shrimp Farming Freshwater Environment in Northeast Region of Brazil

    Directory of Open Access Journals (Sweden)

    Fátima C. T. Carvalho

    2013-01-01

    Full Text Available This study investigated the presence and antibiotic resistance of Salmonella spp. in a shrimp farming environment in Northeast Region of Brazil. Samples of water and sediments from two farms rearing freshwater-acclimated Litopenaeus vannamei were examined for the presence of Salmonella. Afterwards, Salmonella isolates were serotyped, the antimicrobial resistance was determined by a disk diffusion method, and the plasmid curing was performed for resistant isolates. A total of 30 (16.12% of the 186 isolates were confirmed to be Salmonella spp., belonging to five serovars: S. serovar Saintpaul, S. serovar Infantis, S. serovar Panama, S. serovar Madelia, and S. serovar Braenderup, along with 2 subspecies: S. enterica serovar houtenae and S. enterica serovar enterica. About twenty-three percent of the isolates were resistant to at least one antibiotic, and twenty percent were resistant to at least two antibiotics. Three strains isolated from water samples (pond and inlet canal exhibited multiresistance to ampicillin, tetracycline, oxytetracycline, and nitrofurantoin. One of them had a plasmid with genes conferring resistance to nitrofurantoin and ampicillin. The incidence of bacteria pathogenic to humans in a shrimp farming environment, as well as their drug-resistance pattern revealed in this study, emphasizes the need for a more rigorous attention to this area.

  6. Biological control of Anopheles darlingi, Aedes aegypti and Culex quinquefasciatus larvae using shrimps

    Directory of Open Access Journals (Sweden)

    Willian Marinho Dourado Coelho

    2017-08-01

    Full Text Available Mosquitoes can act as vectors of important diseases such as malaria, dengue, Zika virus, yellow fever, Chikungunya and Mayaro fever, in addition to filariasis. The use of insecticides, larvicides, bed nets and repellents, besides the use of drugs as chemoprevention and the treatment of the sick are currently the pillars of the control of these vectors. We studied the biological control against of Anopheles darlingi, Aedes aegypti and Culex quinquefasciatus larvae using shrimps of the species M. pantanalense, M. amazonicum, M. brasiliense and M. jelskii. Larvae of mosquitoes were collected from the breeding environment and placed in a 500 and 1000 l tank containing 60 shrimps/m2. The predatory activity was evaluated for 30 days and, in all groups it was observed that 100% of the larvae were consumed in few minutes. In the environment, these same species of crustaceans were released in water bodies with the presence of larvae of these insects. In just 72 h there was a marked reduction of the larvae in the release sites of shrimps. Similarly, there was a reduction in the number of adult mosquitoes caught near the breeding sites, allowing to infer that, in places where the crustaceans were released, the predatory activity on the larvae of mosquitoes was sufficient to reduce the number of adult mosquitoes p ≤ 0,05. This is the first description of the predatory activity of M. pantanalense, M. amazonicum, M. brasiliense and M. jelskii on An. darlingi, A. aegypti and C. quinquefasciatus larvae, constituting an important tool of biological control of these parasites-vectors.

  7. Phytochemistry, Brine shrimp lethality and mice acute oral toxicity studies on seed extracts of Vernonia anthelmintica.

    Science.gov (United States)

    Jamil, Subia; Khan, Rafeeq Alam; Afroz, Syeda; Ahmed, Shadab

    2016-11-01

    Despite the widespread use of Vernonia anthelmintica seeds in traditional medicine, the need to establish the safety of the Vernonia anthelmintica is required to ascertain the safe use of this herbal medicine. The aim of the present study is to establish the acute toxicity profile of different extracts of Vernonia anthelmintica. Hexane and ethanol extract of Vernonia Anthelmintica has been studied for its brine shrimp lethality potential. Water decoction (WDVA), Hexane (HEVA) and Ethanol (EEVA) extracts of Vernonia anthelmintica has also been evaluated for their in-vivo acute oral toxicity in mice by Lorke's method. Phytochemistry of all three extracts was also evaluated for the presence of their secondary metabolites. All three extracts showed the presence of flavonoids and terpenoids, while alkaloids, tannins and fixed oils were present in HEVA and EEVA. Furthermore EEVA also showed presence of carbohydrates and HEVA also showed the presence of cardiac glycosides. Ethanol and hexane extracts of Vernonia anthelmintica showed a positive cytotoxicity in brine shrimp lethality test at 24 hours with LC50 104.16 (224.0-48.05)μg/ml and 216.11μg/ml (378.2-128.7) respectively as compared to standard drug etoposide LC50 7.46μg/ml. The oral LD50 for EEVA, HEVA and WDVA in mice by Lorke's method was greater than 5000mg/kg. The result of brine shrimp lethality test clearly exhibited the presence of bioactive compounds with cytotoxic potential; however seems to be safe for oral use since LD50 was higher than 5000mg/kg and thus safety of acute dosing in vivo practices is justified.

  8. Monitoring of Vibrio harveyi quorum sensing activity in real time during infection of brine shrimp larvae.

    Science.gov (United States)

    Defoirdt, Tom; Sorgeloos, Patrick

    2012-12-01

    Quorum sensing, bacterial cell-to-cell communication, has been linked to the virulence of pathogenic bacteria. Indeed, in vitro experiments have shown that many bacterial pathogens regulate the expression of virulence genes by this cell-to-cell communication process. Moreover, signal molecules have been detected in samples retrieved from infected hosts and quorum sensing disruption has been reported to result in reduced virulence in different host-pathogen systems. However, data on in vivo quorum sensing activity of pathogens during infection of a host are currently lacking. We previously reported that quorum sensing regulates the virulence of Vibrio harveyi in a standardised model system with gnotobiotic brine shrimp (Artemia franciscana) larvae. Here, we monitored quorum sensing activity in Vibrio harveyi during infection of the shrimp, using bioluminescence as a read-out. We found that wild-type Vibrio harveyi shows a strong increase in quorum sensing activity early during infection. In this respect, the bacteria behave remarkably similar in different larvae, despite the fact that only half of them survive the infection. Interestingly, when expressed per bacterial cell, Vibrio harveyi showed around 200-fold higher maximal quorum sensing-regulated bioluminescence when associated with larvae than in the culture water. Finally, the in vivo quorum sensing activity of mutants defective in the production of one of the three signal molecules is consistent with their virulence, with no detectable in vivo quorum sensing activity in AI-2- and CAI-1-deficient mutants. These results indicate that AI-2 and CAI-1 are the dominant signals during infection of brine shrimp.

  9. Toxicity Testing of Restorative Dental Materials Using Brine Shrimp Larvae (Artemia salina

    Directory of Open Access Journals (Sweden)

    Manar M. Milhem

    2008-08-01

    Full Text Available This study investigated the effect of extracts of different composites, glass ionomer cement (GICs and compomers on the viability of brine shrimp larvae. Ethanolic extracts of four dental composites (Z-100; Solitaire 2; Filtek P60 and Synergy, a conventional GIC (Ketac-Fil, a resin-modified glass ionomer cement (Vitremer, two compomers (F2000; Dyract AP, and a flowable compomer (Dyract Flow were prepared from each material. Following evaporation of the ethanol, the extracts were resuspended in distilled water, which was then used to test the effects on the viability of brine shrimp larvae. For the composites, the extract of Synergy was the least toxic (88% viability followed by the extracts of Solitaire 2, Z100 and P60 (75%, 67.5% and 50% viability, respectively. One-way ANOVA revealed highly significant differences between the resin composite materials (p<0.001. Follow-up comparison between the composite groups by Tukey's pairwise multiple-comparison test (α =0.05 showed that the extract of Synergy was significantly less toxic than the extracts of all the other materials except that of Solitaire 2. The compomers showed 100% lethality, while the percentage of viable larvae for the extracts of Ketac-Fil, and Vitremer were 32.3%, and 37.0%, respectively. One-way ANOVA revealed highly significant differences between the groups of materials (p<0.001. Follow-up comparison between the groups by Tukey's test (α = 0.05 showed that the toxic effect of the extracts of the compomers were significantly greater than that of Ketac-Fil, and Vitremer. The differences in the toxic effects of Vitremer and Ketac-Fil were not statistically significant. In conclusion, the toxicity of composite materials varied according to their chemical composition. Compomers were the most lethal materials to brine shrimp larvae followed by GICs and then composites.

  10. Ecological generalism facilitates the evolution of sociality in snapping shrimps.

    Science.gov (United States)

    Brooks, Katherine C; Maia, Rafael; Duffy, J Emmett; Hultgren, Kristin M; Rubenstein, Dustin R

    2017-12-01

    Evidence from insects and vertebrates suggests that cooperation may have enabled species to expand their niches, becoming ecological generalists and dominating the ecosystems in which they occur. Consistent with this idea, eusocial species of sponge-dwelling Synalpheus shrimps from Belize are ecological generalists with a broader host breadth and higher abundance than non-eusocial species. We evaluate whether sociality promotes ecological generalism (social conquest hypothesis) or whether ecological generalism facilitates the transition to sociality (social transition hypothesis) in 38 Synalpheus shrimp species. We find that sociality evolves primarily from host generalists, and almost exclusively so for transitions to eusociality. Additionally, sponge volume is more important for explaining social transitions towards communal breeding than to eusociality, suggesting that different ecological factors may influence the independent evolutionary origins of sociality in Synalpheus shrimps. Ultimately, our results are consistent with the social transition hypothesis and the idea that ecological generalism facilitates the transition to sociality. © 2017 John Wiley & Sons Ltd/CNRS.

  11. Detection of irradiation in cuticles of commercial shrimps

    International Nuclear Information System (INIS)

    Lehner, K.; Stachowicz, W.

    2006-01-01

    Laboratory for Detection of Irradiated Food has more and more orders for detection of irradiation in shrimps. A method adapted to achieve detection of irradiation in this material is a thermoluminescence measure. However, the procedure is time-consuming - needs several days to receive the result. The aim of presented study was to elaborate the EPR examination of the possible irradiation in this product. As a result od the performed studies it can be concluded, that the EPR measurement of cuticles of shrimps can be adapted as the preliminary, screening test proving the irradiation of shrimp. It has to be stressed, however, that the lack of a specific, hydroxyapatite born EPR signal in the spectrum cannot suggest that sample was not irradiated

  12. AFSC/ABL: Adult Pink Salmon Predation in Prince William Sound and Southeast Alaska, 2009-2011

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The project objectives were to assess potential salmon predation impact on juvenile salmon and herring by: (1) comparing diets of adult pink salmon during their...

  13. Growth kinetics and efficacy as parameters for ranking and selecting biocontrol agents that reduce pink rot in stored potatoes

    Science.gov (United States)

    Increased production of organic agricultural products and the relative ineffectiveness of traditional control measures support development of new biocontrol technologies for use against pink rot infections in storage. The microbiota of 84 different agricultural soils was individually transferred to...

  14. The Effect of Latitudinal Variation on Shrimp Reproductive Strategies.

    Science.gov (United States)

    van de Kerk, Madelon; Jones Littles, Chanda; Saucedo, Omar; Lorenzen, Kai

    2016-01-01

    Reproductive strategies comprise the timing and frequency of reproductive events and the number of offspring per reproductive event, depending on factors such as climate conditions. Therefore, species that exhibit plasticity in the allocation of reproductive effort can alter their behavior in response to climate change. Studying how the reproductive strategy of species varies along the latitudinal gradient can help us understand and predict how they will respond to climate change. We investigated the effects of the temporal allocation of reproductive effort on the population size of brown shrimp (Farfantepenaeus aztecus) along a latitudinal gradient. Multiple shrimp species exhibit variation in their reproductive strategies, and given the economic importance of brown shrimp to the commercial fishing sector of the Unites States, changes in the timing of their reproduction could have significant economic and social consequences. We used a stage-based, density-dependent matrix population model tailored to the life history of brown shrimp. Shrimp growth rates and environmental carrying capacity were varied based on the seasonal climate conditions at different latitudes, and we estimated the population size at equilibrium. The length of the growing season increased with decreasing latitude and the reproductive strategy leading to the highest population size changed from one annual birth pulse with high reproductive output to continuous low-output reproduction. Hence, our model confirms the classical paradigm of continuous reproduction at low latitudes, with increased seasonality of the breeding period towards the poles. Our results also demonstrate the potential for variation in climate to affect the optimal reproductive strategy for achieving maximum population sizes. Certainly, understanding these dynamics may inform more comprehensive management strategies for commercially important species like brown shrimp.

  15. The Effect of Latitudinal Variation on Shrimp Reproductive Strategies.

    Directory of Open Access Journals (Sweden)

    Madelon van de Kerk

    Full Text Available Reproductive strategies comprise the timing and frequency of reproductive events and the number of offspring per reproductive event, depending on factors such as climate conditions. Therefore, species that exhibit plasticity in the allocation of reproductive effort can alter their behavior in response to climate change. Studying how the reproductive strategy of species varies along the latitudinal gradient can help us understand and predict how they will respond to climate change. We investigated the effects of the temporal allocation of reproductive effort on the population size of brown shrimp (Farfantepenaeus aztecus along a latitudinal gradient. Multiple shrimp species exhibit variation in their reproductive strategies, and given the economic importance of brown shrimp to the commercial fishing sector of the Unites States, changes in the timing of their reproduction could have significant economic and social consequences. We used a stage-based, density-dependent matrix population model tailored to the life history of brown shrimp. Shrimp growth rates and environmental carrying capacity were varied based on the seasonal climate conditions at different latitudes, and we estimated the population size at equilibrium. The length of the growing season increased with decreasing latitude and the reproductive strategy leading to the highest population size changed from one annual birth pulse with high reproductive output to continuous low-output reproduction. Hence, our model confirms the classical paradigm of continuous reproduction at low latitudes, with increased seasonality of the breeding period towards the poles. Our results also demonstrate the potential for variation in climate to affect the optimal reproductive strategy for achieving maximum population sizes. Certainly, understanding these dynamics may inform more comprehensive management strategies for commercially important species like brown shrimp.

  16. Improvement of age estimation using amino acid racemization in a case of pink teeth.

    Science.gov (United States)

    Ohtani, S; Yamada, Y; Yamamoto, I

    1998-03-01

    Age was estimated from pink teeth using racemization of dentinal aspartic acid. Materials for identification were two lower second premolars. The body was determined to be that of a 40-year-old man; however, the age of the decedent had been estimated to be 29 and 30 years by the conventional method and 30 years from findings in the oral cavity. To clarify the cause of this difference, the powdered teeth were further washed in 0.01 mol/L hydrochloric acid. The racemization ratio (D/L ratio) of ordinary white teeth from persons of known age was slightly lower than that before washing, whereas that of the teeth used for identification was higher than before washing. The calculated age of the decedent using the racemization ratio of his teeth was between 36 and 37 years. These results suggest that age estimated from pink teeth is probably underestimated, but a more accurate age estimate can be obtained after adequate washing.

  17. Heterozygous carriers of a Parkin or PINK1 mutation share a common functional endophenotype

    DEFF Research Database (Denmark)

    van Nuenen, BF; Siebner, Hartwig; Weiss, MM

    2008-01-01

    inherited Parkinson disease alters the cortical control of sequential finger movements. METHODS: Nonmanifesting individuals carrying a single heterozygous Parkin (n = 13) or PINK1 (n = 9) mutation and 23 healthy controls without these mutations were studied with functional MRI (fMRI). During f...... rostral dorsal premotor cortex in mutation carriers but not in controls. Task-related activation of these premotor areas was similar in carriers of a Parkin or PINK1 mutation. CONCLUSION: Mutations in different genes linked to recessively inherited Parkinson disease are associated with an additional...... recruitment of rostral supplementary motor area and rostral dorsal premotor cortex during a simple motor sequence task. These premotor areas were recruited independently of the underlying genotype. The observed activation most likely reflects a "generic" compensatory mechanism to maintain motor function...

  18. Oxidative stability of pork emulsion containing tomato products and pink guava pulp during refrigerated aerobic storage.

    Science.gov (United States)

    Joseph, Serlene; Chatli, Manish K; Biswas, Ashim K; Sahoo, Jhari

    2014-11-01

    Lipid oxidation-induced quality problems can be minimized with the use of natural antioxidants. Antioxidant potential of tomato puree (10 %; T-1), tomato pulp (12.5 %; T-2), lyophilized tomato peel (6 %; T-3), and pink guava pulp (10 %; T-4) was evaluated in raw pork emulsion during refrigerated storage for 9 days under aerobic packaging. The lycopene and β-carotene content varied in pork emulsion as T-3 > T-1 > T-2 > T-4 and decreased (P emulsions than in control. Overall, incorporation of tomato products and pink guava pulp improved the visual colour and odour scores of raw pork emulsion. These results indicated that tomato products and guava pulp can be utilized as sources of natural antioxidants in raw pork products to minimize lipid oxidation, off-odour development, and surface discolouration.

  19. The Pinking Shears: A Novel Tool for Improving Skin Graft Cosmesis

    Directory of Open Access Journals (Sweden)

    Cormac W. Joyce, MB BCh

    2014-12-01

    Full Text Available Summary: A significant aesthetic disadvantage to split skin grafts is the obvious transition between the graft and the normal skin. We report on a novel method to interrupt this transition point by using pinking shears, which are dressmaking scissors with saw-toothed blades that create a chevron pattern instead of a straight edge. We describe a case where the pinking shears were utilized on a split skin graft and Integra for reconstruction of the skin on a volar forearm. This technique allows for breaking-up of the transition point between the skin graft and normal skin and gives rise to an improved aesthetic outcome as the boundary is significantly less well-defined. This novel method shows promise and further study is certainly warranted.

  20. Asymmetric hybridization and introgression between pink salmon and chinook salmon in the Laurentian Great Lakes

    Science.gov (United States)

    Rosenfield, Jonathan A.; Todd, Thomas; Greil, Roger

    2000-01-01

    Among Pacific salmon collected in the St. Marys River, five natural hybrids of pink salmon Oncorhynchus gorbuscha and chinook salmon Oncorhynchus tshawytscha and one suspected backcross have been detected using morphologic, meristic, and color evidence. One allozyme (LDH, l-lactate dehydrogenase from muscle) and one nuclear DNA locus (growth hormone) for which species-specific fixed differences exist were analyzed to detect additional hybrids and to determine if introgression had occurred. Restriction fragment length polymorphism of mitochondrial DNA (mtDNA) was used to identify the maternal parent of each hybrid. Evidence of introgression was found among the five previously identified hybrids. All hybrid specimens had chinook salmon mtDNA, indicating that hybridization between chinook salmon and pink salmon in the St. Marys River is asymmetric and perhaps unidirectional. Ecological, physiological, and sexual selection forces may contribute to this asymmetric hybridization. Introgression between these highly differentiated species has implications for management, systematics, and conservation of Pacific salmon.