WorldWideScience

Sample records for productivity monitoring fish

  1. Fish product quality evaluation based on temperature monitoring in ...

    African Journals Online (AJOL)

    As one kind of perishable food, fish product is at risk of suffering various damages during cold chain and temperature is the most important factor to affect the product quality. This research work on frozen tilapia fillet was aimed at evaluating the fish product quality and predict shelf-life through monitoring temperature change ...

  2. Augmented fish health monitoring

    International Nuclear Information System (INIS)

    Michak, P.; Rogers, R.; Amos, K.

    1991-05-01

    The Bonneville Power Administration (BPA) initiated the Augmented Fish Health Monitoring project in 1986. This project was a five year interagency project involving fish rearing agencies in the Columbia Basin. Historically, all agencies involved with fish health in the Columbia Basin were conducting various levels of fish health monitoring, pathogen screening and collection. The goals of this project were; to identify, develop and implement a standardized level of fish health methodologies, develop a common data collection and reporting format in the area of artificial production, evaluate and monitor water quality, improve communications between agencies and provide annual evaluation of fish health information for production of healthier smolts. This completion report will contain a project evaluation, review of the goals of the project, evaluation of the specific fish health analyses, an overview of highlights of the project and concluding remarks. 8 refs., 1 fig., 4 tabs

  3. Microbiological spoilage of fish and fish products

    DEFF Research Database (Denmark)

    Gram, Lone; Huss, Hans Henrik

    1996-01-01

    Spoilage of fresh and lightly preserved fish products is caused by microbial action. This paper reviews the current knowledge in terms of the microbiology of fish and fish products with particular emphasis on identification of specific spoilage bacteria and the qualitative and quantitative...... biochemical indicators of spoilage. Shewanzella putrefaciens and Pseudomonas spp. are the specific spoilage bacteria of iced fresh fish regardless of the origin of the fish. Modified atmosphere stored marine fish from temperate waters are spoiled by the CO2 resistant Photobacterium phosphoreum whereas Gram......- positive bacteria are likely spoilers of CO2 packed fish from fresh or tropical waters. Fish products with high salt contents may spoil due to growth of halophilic bacteria (salted fish) or growth of anaerobic bacteria and yeasts (barrel salted fish). Whilst the spoilage of fresh and highly salted fish...

  4. Natural Production Monitoring and Evaluation; Idaho Department of Fish and Game, 2003-2004 Annual Report.

    Energy Technology Data Exchange (ETDEWEB)

    Copeland, Timothy; Johnson, June; Bunn, Paul (Idaho Department of Fish and Game, Boise, ID)

    2004-12-01

    This report covers the following 3 parts of the Project: Part 1--Monitoring age composition of wild adult spring and summer Chinook salmon returning to the Snake River basin in 2003 to predict smolt-to-adult return rates Part 2--Development of a stock-recruitment relationship for Snake River spring/summer Chinook salmon to forecast natural smolt production Part 3--Improve the precision of smolt-to-adult survival rate estimates for wild steelhead trout by PIT tagging additional juveniles.

  5. Microbiological spoilage of fish and fish products.

    Science.gov (United States)

    Gram, L; Huss, H H

    1996-11-01

    Spoilage of fresh and lightly preserved fish products is caused by microbial action. This paper reviews the current knowledge in terms of the microbiology of fish and fish products with particular emphasis on identification of specific spoilage bacteria and the qualitative and quantitative biochemical indicators of spoilage. Shewanella putrefaciens and Pseudomonas spp. are the specific spoilage bacteria of iced fresh fish regardless of the origin of the fish. Modified atmosphere stored marine fish from temperate waters are spoiled by the CO2 resistant Photobacterium phosphoreum whereas Gram-positive bacteria are likely spoilers of CO2 packed fish from fresh or tropical waters. Fish products with high salt contents may spoil due to growth of halophilic bacteria (salted fish) or growth of anaerobic bacteria and yeasts (barrel salted fish). Whilst the spoilage of fresh and highly salted fish is well understood, much less is known about spoilage of lightly preserved fish products. It is concluded that the spoilage is probably caused by lactic acid bacteria, certain psychotrophic Enterobacteriaceae and/or Photobacterium phosphoreum. However, more work is needed in this area.

  6. LCA of Danish fish products

    DEFF Research Database (Denmark)

    Thrane, Mikkel

    2006-01-01

    The article presents the main results from a PhD dissertation about environmental impacts from Danish fish products.......The article presents the main results from a PhD dissertation about environmental impacts from Danish fish products....

  7. Radioprotective effect of fish products

    International Nuclear Information System (INIS)

    Khadzhijski, L.; Alyakov, M.; Tsvetkova, E.; Kavrakirova, S.; Chamova, S.; Chaneva, M.

    1993-01-01

    New fish cans were prepared in the Institute of Fish Industry, Burgas (BG), containing pectin and additives. A biological experimental study was conducted to investigate the decontaminating effect of the new products. The results demonstrated no decontaminating effect in relation to radiocesium and radiostrontium. A pronounced prophylactic effect was observed in case of external irradiation, judged by endogenous spleen colonies. (author)

  8. Monitoring fish distributions along electrofishing segments

    Science.gov (United States)

    Miranda, Leandro E.

    2014-01-01

    Electrofishing is widely used to monitor fish species composition and relative abundance in streams and lakes. According to standard protocols, multiple segments are selected in a body of water to monitor population relative abundance as the ratio of total catch to total sampling effort. The standard protocol provides an assessment of fish distribution at a macrohabitat scale among segments, but not within segments. An ancillary protocol was developed for assessing fish distribution at a finer scale within electrofishing segments. The ancillary protocol was used to estimate spacing, dispersion, and association of two species along shore segments in two local reservoirs. The added information provided by the ancillary protocol may be useful for assessing fish distribution relative to fish of the same species, to fish of different species, and to environmental or habitat characteristics.

  9. Long Term Resource Monitoring Program procedures: fish monitoring

    Science.gov (United States)

    Ratcliff, Eric N.; Glittinger, Eric J.; O'Hara, T. Matt; Ickes, Brian S.

    2014-01-01

    This manual constitutes the second revision of the U.S. Army Corps of Engineers’ Upper Mississippi River Restoration-Environmental Management Program (UMRR-EMP) Long Term Resource Monitoring Program (LTRMP) element Fish Procedures Manual. The original (1988) manual merged and expanded on ideas and recommendations related to Upper Mississippi River fish sampling presented in several early documents. The first revision to the manual was made in 1995 reflecting important protocol changes, such as the adoption of a stratified random sampling design. The 1995 procedures manual has been an important document through the years and has been cited in many reports and scientific manuscripts. The resulting data collected by the LTRMP fish component represent the largest dataset on fish within the Upper Mississippi River System (UMRS) with more than 44,000 collections of approximately 5.7 million fish. The goal of this revision of the procedures manual is to document changes in LTRMP fish sampling procedures since 1995. Refinements to sampling methods become necessary as monitoring programs mature. Possible refinements are identified through field experiences (e.g., sampling techniques and safety protocols), data analysis (e.g., planned and studied gear efficiencies and reallocations of effort), and technological advances (e.g., electronic data entry). Other changes may be required because of financial necessity (i.e., unplanned effort reductions). This version of the LTRMP fish monitoring manual describes the most current (2014) procedures of the LTRMP fish component.

  10. Has eutrophication promoted forage fish production in the Baltic Sea?

    DEFF Research Database (Denmark)

    Eero, Margit; Andersson, Helén C; Almroth-Rosell, Elin

    2016-01-01

    Reducing anthropogenic nutrient inputs is a major policy goal for restoring good environmental status of coastal marine ecosystems. However, it is unclear to what extent reducing nutrients would also lower fish production and fisheries yields. Empirical examples of changes in nutrient loads...... and concurrent fish production can provide useful insights to this question. In this paper, we investigate to what extent a multi-fold increase in nutrient loads from the 1950s to 1980s enhanced forage fish production in the Baltic Sea. We use monitoring data on fish stock dynamics covering the period...

  11. Protocol for Monitoring Fish Assemblages in Pacific Northwest National Parks

    Science.gov (United States)

    Brenkman, Samuel J.; Connolly, Patrick J.

    2008-01-01

    movements and abundances in rivers. One underlying assumption is that the monitoring program is designed in perpetuity, and consequently our capability to detect trends substantially increases with time. The protocol describes sampling designs, methods, training procedures, safety considerations, data management, data analysis, and reporting. The allocation of sampling effort represents a balance between ecological considerations, a sound monitoring approach, and practical limitations caused by logistical constraints and a limited annual budget of $55,000. The widespread declines of native fish species in western North America highlights the importance and urgency of understanding trends in fish assemblages from undisturbed habitats. Seasonal and annual trends in fish assemblages will provide insights at the individual, population, and assemblage level. This protocol will allow managers to detect increases and decreases in abundance of priority management species, and occurrence of non-native, hatchery, and federally listed fish. The detection of trends in fish assemblages will allow for specific management actions that may include: implementation of more appropriate fishing regulations, evaluation of existing hatchery releases, control of non-native fish species, and prioritization of habitat restoration projects. Dissemination and communication of scientific findings on North Coast and Cascades Network fish assemblages will be a core product of this protocol, which will have much relevance to decision makers, park visitors, researchers, and educators.

  12. Using Smart Packaging in Fish and Fish Based Product

    Directory of Open Access Journals (Sweden)

    Elif Tuğçe AKSUN

    2016-11-01

    Full Text Available Food packaging have three main roles during protection, preservation and storage are still involved better continuance of food quality. Evolution of civilization and improvement of new kind of food stuffs, packaging industry must created new possibilities for preventation of food quality during shelf-life. The quality and safety of perishable food is related to microbial quality has got a significance role. Fish is a very perishable food product. It is a very low acidic food and thus is very liable to the expansion of food poisoning bacteria. Also decomposition of fish can be by reason of enzymatic spoilage, oxidation and/or bacterial spoilage. Fish is an important resource of polyunsaturated fatty acids stated to have defensive effects in opposition to heartconnected diseases. Some smart packaging mechanisms liable to determine this break down incident thought storage. In this review, smart packaging technologies that could be used to detect breakdown compounds from packed fish and fish products.

  13. New salty waffle products "Fish Krekis" with fish & plant semifinished products

    Directory of Open Access Journals (Sweden)

    Fedorova Dina

    2016-04-01

    Full Text Available The study examines the directions of expansion of the range of wafer snack products of high nutritional value by using fish & plant semifinished products. The study scientifically grounds the benefits of using the new fish & plant semifinished products in manufacturing waffle salty snack products. The data provided in the article prove that the use of the fish & plant semifinished products & herbal ingredients enable a range of the new wafer snack products «Fish krekis» with high content of proteins, organic calcium, fiber and vitamins, with improved consumer properties, as well as more efficient use of Ukrainian raw fish materials.

  14. Monitoring production target thickness

    International Nuclear Information System (INIS)

    Oothoudt, M.A.

    1993-01-01

    Pion and muon production targets at the Clinton P. Anderson Meson Physics Facility consist of rotating graphite wheels. The previous target thickness monitoring Procedure scanned the target across a reduced intensity beam to determine beam center. The fractional loss in current across the centered target gave a measure of target thickness. This procedure, however, required interruption of beam delivery to experiments and frequently indicated a different fractional loss than at normal beam currents. The new monitoring Procedure compares integrated ups and downs toroid current monitor readings. The current monitors are read once per minute and the integral of readings are logged once per eight-hour shift. Changes in the upstream to downstream fractional difference provide a nonintrusive continuous measurement of target thickness under nominal operational conditions. Target scans are now done only when new targets are installed or when unexplained changes in the current monitor data are observed

  15. Influence of ionizing radiation on fish products

    International Nuclear Information System (INIS)

    Ali, H.A.S.

    1998-01-01

    Seafood are important sources of nutrients such as proteins of high biological value as well as other important nutrients for human. Common carp fish have a low commercial value due to the presence of fine spines between muscles in addition to the poor yield of fillets. The aim of this investigation was production of fish burger from the common carp fish and studying the possibility of using gamma irradiation doses of 2,4, and 6 kGy for increasing the shelf-life of cold stored fish burger samples as well as improving the hygienic quality of frozen storage ones in comparison with the addition of potassium sorbate as a preservative

  16. Real time fish pond monitoring and automation using Arduino

    Science.gov (United States)

    Harun, Z.; Reda, E.; Hashim, H.

    2018-03-01

    Investment and operating costs are the biggest obstacles in modernizing fish ponds in an otherwise very lucrative industry i.e. food production, in this region. Small-scale farmers running on small ponds could not afford to hire workers to man daily operations which usually consists of monitoring water levels, temperature and feeding fish. Bigger scale enterprises usually have some kinds of automation for water monitoring and replacement. These entities have to consider employing pH and dissolved oxygen (DO) sensors to ensure the health and growth of fish, sooner or later as their farms grow. This project identifies one of the sites, located in Malacca. In this project, water, temperature, pH and DO levels are measured and integrated with aerating and water supply pumps using Arduino. User could receive information at predetermined intervals on preferred communication or display gadgets as long as they have internet. Since integrating devices are comparatively not expensive; it usually consists of Arduino board, internet and relay frames and display system, farmer could source these components easily. A sample of two days measurements of temperature, pH and DO levels show that this farm has a high-quality water. Oxygen levels increases in the day as sunshine supports photosynthesis in the pond. With this integration system, farmer need not hire worker at their site, consequently drive down operating costs and improve efficiency.

  17. Monitoring of heavy metals in marine and freshwater fishes and nutritional evaluation of fish consumption

    International Nuclear Information System (INIS)

    Rina Mulyaningsih

    2014-01-01

    Fish is a food source of minerals. Uptake of heavy metals in fish could come from water, sediment and fish feed. Monitoring of minerals content and contaminants in fish has been carried out to evaluate nutrition and food safety, using neutron activation analysis techniques. Marine fish species that being analyzed are Kembung (Rastrelliger faughni), mackerel (Acanthocybium solandri), Tuna (Authis thazard) and freshwater fishes are Bawal (Colossoma macropomum), Nila (Oreochromis niloticus), Mas (Cyprinus carpio), sampled from 6 markets in North Jakarta. Monitoring results indicate that the essential minerals contained in fish are Fe, K, Na, Zn, Ca, Mg, and Se. Se and Ca concentrations in marine fish are higher than in freshwater fish. The concentration of other essential elements varies depending on the type of fish. The concentration of arsenic in marine fish is 3 times higher than that of freshwater fish; Hg and Cr content in all fish species were observed. From the evaluation of the adequacy of nutrition, with assuming a consumption of 86.68 g fish/day, for men aged 19 - 30 years, and referring to data from the Institute of Medicine USA, the Ca intake : 2.5 - 6.3; Cl : 1.5 - 3.3; Fe : 11.5 - 26.9; Na : 1.5 - 4.1; K : 3.4 - 6.7 and Zn 3.9 - 7.2% of the recommended value. Cr intake exceeds the recommended value, while As and Hg is not recommended in the food. In fact these metals contained in the studied fish, but the concentration is still below the value of standards issued by BPOM. (author)

  18. Environmental impacts from Danish fish products

    DEFF Research Database (Denmark)

    Thrane, Mikkel

    This dissertation presents an assessment of the environmental impacts from Danish fish products in a life cycle perspective (from sea to table). The assessment is carried out in three steps ? and includes a MECO analysis, a quantitative LCA and a qualitative LCA. The results are used to discuss...... current environmental policies addressing the fishery, landing and auction, the fish processing industry, wholesale, transport, retail, and use.It is concluded that considerable improvement potentials exist in the fishing stage, which also represents the largest environmental impact potential compared....... It is suggested that passive and semi-active fishing methods such as Danish seine, purse seine, gillnet and long line represent a significant improvement potential compared to trawl. And it is shown that the energy consumption can be reduced with a factor 15 by substituting beam trawl with Danish seine...

  19. Towards sustainable fish feed production using novel protein sources

    NARCIS (Netherlands)

    Draganovic, V.

    2013-01-01

    The consumption of fish and fish-related products is increasing. Due to improved welfare and suggested health benefits, consumers are now eating more fish. In 2008, global fisheries supplied the world with about 142 million tons of fish, of which 115 million tons was used as human food, which is

  20. Concentration of elements in whole-body fish, fish fillets, fish muscle plugs, and fish eggs from the 2008 Missouri Department of Conservation General Contaminant Monitoring Program

    Science.gov (United States)

    May, Thomas W.; Walther, Michael J.; Brumbaugh, William G.; McKee, Michael J.

    2009-01-01

    This report presents the results of a contaminant monitoring survey conducted annually by the Missouri Department of Conservation to examine the levels of selected elemental contaminants in whole-body fish, fish fillets, fish muscle plugs, and fish eggs. Whole-body, fillet, or egg samples of catfish (Ictalurus punctatus, Ictalurus furcatus, Pylodictis olivaris), largemouth bass (Micropterus salmoides), walleye (Sander vitreus), crappie (Pomoxis annularis, Pomoxis nigromaculatus), shovelnose sturgeon (Scaphirhynchus platorynchus), northern hog sucker (Hypentelium nigricans), and Missouri saddled darter (Etheostoma tetrazonum) were collected from 23 sites as part of the Missouri Department of Conservation's Fish Contaminant Monitoring Program. Fish dorsal muscle plugs also were collected from walleye (Sander vitreus) at one of the sites.

  1. Fish monitoring project -- Oregon: Smolt monitoring activities at Little Goose Dam in 1996. Annual Report 1996

    International Nuclear Information System (INIS)

    Setter, A.

    1998-01-01

    The juvenile fish facility at Little Goose Dam is operated seasonally to collect and bypass downstream migrating smolts and keep them from passing through the turbine blades. Fish are diverted from turbines by traveling screens as they sound in the forebay to pass the dam. A small percentage of the passing fish are sampled on a daily basis to provide information on fish condition, species composition, migration timing, and size distribution. Oregon Department of Fish and Wildlife personnel perform daily fish sampling and data collection. Physical operation of the facility is the responsibility of the US Army Corps of Engineers. Data is reported to the Fish Passage Center daily by means of electronic data transfer. Funding for this project was provided through the Smolt Monitoring Program administered by the Fish Passage Center. Overall, the number of fish collected and sampled in 1996 was a reduction from the previous years of operation. The 1996 migration season was characterized by higher than average flows and greater spill frequency at the dam. It was the first year that coho salmon were obtained in the sample. The predominant species collected was steelhead with hatchery fish outnumbering wild fish by a ratio of 8:1. An increased emphasis was placed on gas bubble trauma examination and a routine, consistent effort was implemented using a protocol established by the Fish Passage Center. The objective of the gas bubble trauma (GBT) examinations was to document the relative incidence of symptoms throughout the migration season

  2. Development and validation of a colorimetric sensor array for fish spoilage monitoring

    DEFF Research Database (Denmark)

    Morsy, Mohamed K.; Zor, Kinga; Kostesha, Natalie

    2016-01-01

    their color changes in response to compounds present in fresh products (hexanal, 1-octane-3-ol) used as negative controls. The colorimetric sensor array was used to follow fish spoilage over time at room temperature for up to 24 h as well as at 4 °C for 9 days. Additionally, fish decay was monitored using......Given the need for non-destructive methods and sensors for food spoilage monitoring, we have evaluated sixteen chemo-sensitive compounds incorporated in an array for colorimetric detection of typical spoilage compounds (trimethylamine, dimethylamine, cadaverine, putrescine) and characterized...

  3. Status of fish broodstock management and seed production in Bangladesh

    OpenAIRE

    Amin, M.N.

    2005-01-01

    The study was conducted with the broad objectives to assess the existing situation of broodstock management and fish seed production in private fish seed farms in Bangladesh. The data were collected from 100 private hatcheries and 40 nurseries in seven upazilas under four districts. There was no shed in forty hatcheries and the owners faced many problems. Brood fish ponds were found suitable for rearing brood fish. About 66% of the hatchery owners collected brood fish from their own ponds and...

  4. Ambient radioactivity monitoring V: Marine environment, fish and marine organisms

    International Nuclear Information System (INIS)

    Wedekind, C.; Kanisch, G.

    1996-01-01

    The sea, originally thought to have an almost unlimited capacity of uptake of pollutants due to its water volumes available for dilution, was shown by growing insight into the physical, chemical and ecologic interdependencies to be a sensitive ecosystem. Its limits to cope with growing pollution are increasingly becoming clear, and this is a particular reason to perform radioactivity monitoring of the sea water, as radioactivity is transferred to the marine organisms. Organisms selected for monitoring are fish and crustaceans. (orig.) [de

  5. Production monitoring system for understanding product robustness

    DEFF Research Database (Denmark)

    Boorla, Srinivasa Murthy; Howard, Thomas J.

    2016-01-01

    study is used to demonstrate how the monitoring system can be used to efficiently guide corrective action to improve product performance. It is claimed that the monitoring system can be used to dramatically cut the time taken to identify, planand execute corrective action related to typical quality......In the current quality paradigm, the performance of a product is kept within specification by ensuring that its parts are within specification. Product performance is then validated after final assembly. However, this does not control how robust the product performance is, i.e. how much...... it will vary between the specification limits. In this paper, a model for predicting product performance is proposed, taking into account design, assembly and process parameters live from production. This empowers production to maintain final product performance, instead of part quality. The PRECI‐IN case...

  6. A Survey of Fish Production and Processing Machinery in Rivers ...

    African Journals Online (AJOL)

    Survey of fish production and processing machinery in Port Harcourt City Local Government Area of Rivers State, Nigeria was carried out to evaluate the followings: different machines used for fish production and processing, the most acceptable machine, effect of cost of machinery on the fish farmer, whether gender has ...

  7. Bibliographic review of works accomplished about irradiated chicken, fish and fish products , spices and condiments

    International Nuclear Information System (INIS)

    Bernardes, B.; Dias Filho, M.

    1983-07-01

    Table of foods that can be irradiated and its respective nominal doses are shown. Bibliographic reviews of works performed about irradiated chicken, fish and fish products, spices and condiments are shown. The irradiation purpose in chicken were to increase the shelf-life and to eliminate the pathogenic microorganism in chicken stored below 10 0 C; in fish and fish products the purposes were to control the insect infestation in dry-fish during the storage and the sell exposure to reduce the macrobian charge in packed and non packed fish and in fish products. To reduce pathogenic microorganism in packing and unpacking fish; in spices and condiments to control the insect infestation, to reduce the microbial contamination. (L.M.J.)

  8. Preservation of fish and fish products by use of ionizing radiation

    International Nuclear Information System (INIS)

    Chuaqui-Offermanns, Noemi.

    1986-09-01

    This report reviews the use of the radurization process in the preservation of fish and fish products. The literature describes several aspects of the process such as the fish species and the doses required, the wholesomeness of the radurized fish, and recommendations by international authorities on the applicability of the process. Areas of further research have been identified. The report concludes that radurization is an effective process for extending the shelf life of fish and fish products. Doses ranging from 0.75 to 2.5 kGy extend the shelf life two to three times compared to unirradiated controls. The loss of nutritional value at these doses is insignificant, and no deleterious short- or long-term toxicological effects have been detected in studies on animals. However, further study is required on consumer acceptance, economic feasibility, and radiation sensitivity of parasites in fish and fish products. 159 refs

  9. Monitoring emerging diseases of fish and shellfish using electronic sources.

    Science.gov (United States)

    Thrush, M A; Dunn, P L; Peeler, E J

    2012-10-01

    New and emerging fish and shellfish diseases represent an important constraint to the growth and sustainability of many aquaculture sectors and have also caused substantial economic and environmental impacts in wild stocks. This paper details the results of 8 years of a monitoring programme for emerging aquatic animal diseases reported around the world. The objectives were to track global occurrences and, more specifically, to identify and provide advanced warning of disease threats that may affect wild and farmed fish stocks in the UK. A range of electronic information sources, including Internet newsletters, alerting services and news agency releases, was systematically searched for reports of new diseases, new presentations of known pathogens and known diseases occurring in new geographic locations or new host species. A database was established to log the details of key findings, and 250 emerging disease events in 52 countries were recorded during the period of study. These included 14 new diseases and a further 16 known diseases in new species. Viruses and parasites accounted for the majority of reports (55% and 24%, respectively), and known diseases occurring in new locations were the most important emerging disease category (in which viruses were dominant). Emerging diseases were reported disproportionally in salmonid species (33%), in farmed populations (62%) and in Europe and North America (80%). The lack of reports from some regions with significant aquaculture or fishery production may indicate that emerging diseases are not being recognized in these areas owing to insufficient surveillance or testing or that these events are being under-reported. The results are discussed in relation to processes underpinning disease emergence in the aquatic environment. © 2011 Crown Copyright. Reproduced with the permission of the Controller of Her Majesty’s Stationery Office and Centre for Environment Fisheries & Aquaculture Science.

  10. Automatic system for monitoring fish passage at dams

    Science.gov (United States)

    Castignolles, Nathalie; Cattoen, Michel; Larinier, M.

    1994-09-01

    Devices called fishways or fish passes are constructed in rivers to help migratory fish get over obstacles (dams). There counting windows are used to monitor fish passage by video-based counting. Our goal is to design and construct a vision system to automate this process. Images are taken by a video camera fitted with an electronic shutter in a backlit fishway. They are stored on optical disks in real time but are processed in delayed time. Faced with high volumes of data, a compression is necessary and an electronic board has been designed to accomplish it in real time. The coding method used is based on a run description of binarized images. Then, a tracking process is implemented on a micro-computer to count the fish crossing the pass. It includes fish recognition, which is based on a Bayesian classification process. In order to reduce processing times, recognition operations (labelling, parameter extraction) are accomplished on coded images. Classification results are satisfactory and are improved by the temporal redundancy generated by the tracking process. Image processing time permits the user, on average, to process images faster than they have been stored. Thus there is no data accumulation. At the end of the processing it is possible to edit a result file, to choose a fish, view its crossing images and change its species if wrong.

  11. Insights for the Development of a Functional Fish Product

    NARCIS (Netherlands)

    Devitiis, De Biagia; Carlucci, Domenico; Nocella, Giuseppe; Viscecchia, Rosaria; Bimbo, Francesco; Nardone, Gianluca

    2018-01-01

    This study aims to explore consumer acceptance of a new functional fish burger using a qualitative approach based on four focus group discussions conducted in selected major Italian cities. Results show that the development of functional fish products may bypass fish consumption barriers, combining

  12. Framework for Certification of Fish Propagation, Protection and Monitoring Facilities. Final Report.

    Energy Technology Data Exchange (ETDEWEB)

    Carlson, Thomas J.; Costello, Ronald J.

    1997-06-01

    A conceptual framework for certification of fish production and monitoring facilities including software templates to expedite implementation of the framework are presented. The framework is based on well established and widely utilized project management techniques. The implementation templates are overlays for Microsoft Professional Office software products: Excel, Word, and Project. Use of the software templates requires Microsoft Professional Office. The certification framework integrates two classical project management processes with a third process for facility certification. These processes are: (1) organization and definition of the project, (2) acquisition and organization of project documentation, and (3) facility certification. The certification process consists of systematic review of the production processes and the characteristics of the produced product. The criteria for certification review are the plans and specifications for the products and production processes that guided development of the facility. The facility is certified when the production processes are operating as designed and the product produced meets specifications. Within this framework, certification is a performance based process, not dissimilar from that practiced in many professions and required for many process, or a product meets professional/industry standards of performance. In the case of fish production facilities, the certifying authority may be diffuse, consisting of many entities acting through a process such as NEPA. A cornerstone of certification is accountability, over the long term, for the operation and products of a facility. This is particularly important for fish production facilities where the overall goal of the facility may require decades to accomplish.

  13. Using image analysis to monitor biological changes in consume fish

    DEFF Research Database (Denmark)

    Dissing, Bjørn Skovlund; Frosch, Stina; Nielsen, Michael Engelbrecht

    2011-01-01

    The quality of fish products is largely defined by the visual appearance of the products. Visual appearance includes measurable parameters such as color and texture. Fat content and distribution as well as deposition of carotenoid pigments such as astaxanthin in muscular and fat tissue...... fishes is based on highly laborious chemical analysis. Trichromatic digital imaging and point-wise colorimetric or spectral measurement are also ways of estimating either the redness or the actual astaxanthin concentration of the fillet. These methods all have drawbacks of either cumbersome testing...... are biological parameters with a huge impact on the color and texture of the fish muscle. Consumerdriven quality demands call for rapid methods for quantification of quality parameters such as fat and astaxanthin in the industry. The spectral electromagnetic reflection properties of astaxanthin are well known...

  14. February 2012 workshop jumpstarts the Mekong Fish Monitoring Network

    Science.gov (United States)

    Andersen, Matthew E.; Ainsley, Shaara M.

    2012-01-01

    The Mekong River in Southeast Asia travels through a basin rich in natural resources. The river originates on the northern slope of the world's tallest mountains, the Himalaya Range, and then drops elevation quickly through steep mountain gorges, tumbling out of China into Myanmar (Burma) and the Lao People's Democratic Republic (Lao PDR). The precipitous terrain of Lao PDR and Thailand generates interest in the river and its tributaries for hydropower development. The terrain, soils, water, and climate make it one of the world's most biologically rich regions. The Mekong's bounty is again on display in the Mekong River Delta, where rice production has successfully been increased to high levels making Vietnam second only to Thailand as the world's largest rice exporters. At least 800 fish species contribute to the natural resource bounty of the Mekong River and are the basis for one of the world's most productive fisheries that provide the primary protein source to more than 50 million people. Against this backdrop of rich natural resources, the U.S. Geological Survey (USGS) is working with the consulting firm FISHBIO, colleagues from the international Delta Research and Global Observation Network (DRAGON) Institute, and a broad contingent of Southeast Asian representatives and partners from abroad to increase knowledge of the Mekong River fisheries and to develop the capacity of permanent residents to investigate and understand these fisheries resources. With the Lower Mekong Basin (LMB) region facing the likelihood of significant environmental changes as a result of both human activities and global climate change, enhancing environmental understanding is critical. To encourage cooperation among the LMB scientists and managers in the study of the Mekong River's fisheries, FISHBIO and the USGS, with generous support from the U.S. State Department, hosted a workshop in Phnom Penh, Cambodia, in February 2012. Workshop participants were from Lao PDR, Thailand

  15. Evaluation of radioactivity concentrations from the Fukushima nuclear accident in fish products and associated risk to fish consumers

    International Nuclear Information System (INIS)

    Chen, J.

    2013-01-01

    Radioactive contamination of the Pacific Ocean following the Fukushima nuclear accident has raised public concerns about seafood safety(1, 2). Many people are wondering whether fish products from the Pacific Ocean and Japan are safe to eat 2 y after the accident. There is also some concern about seafood caught locally, outside of Japan. Based on monitoring data reported in July 2013, radioactive caesium concentrations in fish products from Fukushima and adjacent prefectures are evaluated. Resulting radiation doses from annual consumption at average contamination levels and occasional fish meals at much higher levels of caesium are calculated. To put radiation doses from caesium intake in perspective, comparisons are made to doses from naturally occurring radioactive polonium commonly found in fish. Discussion and conclusions are given subsequently. The Tokyo Electric Power Company has conducted routine radioactivity measurements ( 134 Cs and 137 Cs) of various marine fish and shellfish in the ocean area within a 20-km radius of the Fukushima Daiichi Nuclear Power Station (FDNPS). Based on their posted summary on 16 August 2013(3), a total of 100 fish samples were collected from 7 to 23 July, offshore of the FDNPS and outside of its port area. The nuclide analysis report showed that 134 Cs was detected in 64 samples with concentrations varying from 3.5 to 130 Bq kg -1 . 137 Cs was detected in 79 samples and the concentration varied from 3.6 to 260 Bq kg -1 . On average, fish and shellfish caught within 20-km offshore of the FDNPS contain 12 Bq kg -1 of 134 Cs and 26 Bq kg -1 of 137 Cs. The Japanese Fisheries Agency (JFA), in cooperation with the relevant prefectural governments and organisations, has conducted sampling and inspections of fishery products at the major fishing ports in Fukushima and adjacent prefectures on a weekly basis to examine the possible contamination of fishery products by radioactive materials released from the FDNPS. (authors)

  16. Biotransformation and induction: implications for toxicity, bioaccumulation and monitoring of environmental xenobiotics in fish

    International Nuclear Information System (INIS)

    Kleinow, K.M.; Melancon, M.J.; Lech, J.J.

    1987-01-01

    Biotransformation of xenobiotics in fish occurs by many of the same reactions as in mammals. These reactions have been shown to affect the bioaccumulation, persistence, residue dynamics, and toxicity of select chemicals in fish. P-450-dependent monooxygenase activity of fish can be induced by polycyclic aromatic hydrocarbons, but phenobarbital-type agents induce poorly, if at all. Fish monooxygenase activity exhibits ideal temperature compensation and sex-related variation. Induction of monooxygenase activity by polycyclic aromatic hydrocarbons can result in qualitative as well as quantitative changes in the metabolic profile of a chemical. Induction can also alter toxicity. In addition, multiple P-450 isozymes have been described for several fish species. The biotransformation productions of certain chemicals have been related to specific P-450 isozymes, and the formation of these products can be influenced by induction. Exposure of fish to low levels of certain environmental contaminants has resulted in induction of specific monooxygenase activities and monitoring of such activities has been suggested as a means of identifying areas of pollutant exposure in the wild

  17. Anisakidae in fishing products sold in Sicily

    Directory of Open Access Journals (Sweden)

    Vincenzo Ferrantelli

    2014-04-01

    Full Text Available One of the parasite diseases associated with the consumption of raw fish that occurs with some frequency is the anisakiasis, a human disease caused by the accidental ingestion of larval nematodes of the genus Anisakis, family Anisakidae. At the National Reference Centre for Anisakiasis (C.Re.N.A. from October 2012 to February 2013, a number of 231 bony fish (Trichiuridae, Engraulidae, Scombridae and Clupeidae were received from different fishing sites in Sicily. Anisakis pegreffii is the main species detected in fish, as identified by molecular analysis based on polymerase chain reaction-restriction fragment length polymorphism, while Anisakis simplex sensu stricto was found only in Scomber scombrus caught in the Mediterranean Sea (Fishing Areas 37, in the Spanish coast (Fishing Areas 37 and in the Atlantic Ocean (Fishing Areas 34. Larvae of the genus Pseudoterranova were found only in fish caught in the Norwegian Sea.

  18. Production of Fish Hydrolysates Protein From Waste of Fish Carp (Cyprinus Carpio) by Enzymatic Hydrolysis

    OpenAIRE

    Saputra, Dede; Nurhayati, Tati

    2016-01-01

    Fish Protein Hydrolysates (FPH) is the mixed products of polypeptide, dipeptides, and amino acid. It can be produced from materials that contained of protein by acid reaction, base reaction or enzymatic hydrolysis. The objectives of this study were to study the production of FPH from fish carp meat at post rigor phase and viscera by enzymatic hydrolysis, to determine the specific activity of papain enzyme, and to determine the solubility of FPH. Capacity of fish hydrolyzing can be identified ...

  19. Microbial and nutritional aspects on the production of live feeds in a fish farming industry.

    Science.gov (United States)

    De Donno, A; Lugoli, F; Bagordo, F; Vilella, S; Campa, A; Grassi, T; Guido, M

    2010-03-01

    Aquaculture is an enterprise in constant development, in particular relating to its effect on the environment and also the quality of its products. It represents a valid alternative to traditional fishing, facing the increasing demand for fish products. To guarantee to the consumer a product of high nutritional, organoleptic and hygienic quality, it is fundamental to monitor every phase of the fish farming industry, isolating the potential risk points. For this reason there has been a rapid evolution of productive technique, particularly in the technology, artificial reproduction and feed sectors. The aim of this research has been the monitoring of the evolution of certain microbial and nutritional quality indexes (total microbial counts and lipid analysis on suspensions of Rotifers and Artemia, used as live feed) in the larval phase of the productive cycle of the farm raised fish, in an intensive system. The study has shown an increment in the total microbial counts in the fish farming industry within the production of Rotifers and Artemia, more evident in the suspensions of Rotifers. In addition the study has demonstrated that the maintenance phase, in the enrichment protocol, can reduce the EPA and DHA content. The results confirm the importance of microbial and nutritional control of the live feeds before they get supplied to fish larvae.

  20. The economic impact of diseases and parasitic problems in freshwater fish production

    OpenAIRE

    Okaeme, A.N.; Obiekezie, A.I.; Ogbondeminu, F.S.

    1987-01-01

    Diseases and parasitic problems could constitute significant economic losses in fish production if not controlled, thus the need to continue monitoring its prevalence. Based on field studies on feral and intensively raised fish at the Kainji Lake Research Institute Nigeria, some diseases and parasitic problems have been identified. These include; helminthiasis; fungal disease; protozoa which include Myxosoma sp., Myxobolus spp., Henneguya sp., Trichodina sp., Ichthopthrius sp. bacterial mainl...

  1. The potential of fish production based on periphyton

    NARCIS (Netherlands)

    Dam, van A.A.; Beveridge, M.C.M.; Azim, M.E.; Verdegem, M.C.J.

    2002-01-01

    Periphyton is composed of attached plant and animal organisms embedded in a mucopolysaccharide matrix. This review summarizes research on periphyton-based fish production and on periphyton productivity and ingestion by fish, and explores the potential of developing periphyton-based aquaculture.

  2. FishPopTrace: a new genetic technique for fisheries monitoring and the identification of IUU

    DEFF Research Database (Denmark)

    Helyar, Sarah; Limborg, Morten; Bekkevold, Dorte

    2012-01-01

    nucleotide polymorphisms (SNPs) has the potential to demonstrate previously undetected spatial and temporal population structuring and signatures of adaptive variation. In addition, SNPs are uniquely applicable for the identification and monitoring of wild fish populations and the traceability....../authenticity of products throughout the food supply chain, allowing effective enforcement of fisheries regulations, and the identification of IUU. Here we demonstrate the utility of SNP panels developed in a European Commission‐funded consortium, FishPopTrace, to scenarios that are relevant for the identification......The importance of marine organisms for both economic and ecological reasons is enormous; and knowledge of population structure and connectivity is crucial for the sustainable utilization and conservation of exploited fish stocks. However, in most cases our understanding of these spatial patterns...

  3. Monitoring fish, wildlife, radionuclides and chemicals at Hanford, Washington

    International Nuclear Information System (INIS)

    Gray, R.H.

    1989-02-01

    Concern about the effects of potential releases from nuclear and non-nuclear activities on the US Department of Energy's Hanford Site in southeastern Washington has evolved over four decades into a comprehensive environmental monitoring and surveillance program. The program includes field sampling, and chemical and physical analyses of air, surface and ground water, fish, wildlife, soil, foodstuffs, and natural vegetation. In addition to monitoring radioactivity in fish and wildlife, population numbers of key species are determined, usually during the breeding season. Data from monitoring efforts are used to assess the environmental impacts of Hanford operations and calculate the overall radiological dose to humans onsite, at the Site perimeter, or residing in nearby communities. Chinook salmon (Oncorhynchus tshawytscha) spawning in the Columbia River at Hanford has increased in recent years with a concomitant increase in winter nesting activity of bald eagles (Haliaeetus leucocephalus). An elk (Cervus elaphus) herd, established by immigration in 1972, is also increasing. Nesting Canada goose (Branta canadensis) and great blue heron (Ardea herodias), and various other animals, e.g., mule deer (Odocoileus hemionus) and coyotes (Canis latrans) are common. Measured exposure to penetrating radiation and calculated radiation doses to the public are well below applicable regulatory limits. 35 refs., 4 figs

  4. Shifts in North Sea forage fish productivity and potential fisheries yield

    DEFF Research Database (Denmark)

    Worsøe Clausen, Lotte; Rindorf, Anna; van Deurs, Mikael

    2018-01-01

    productivity. Furthermore, from an ecosystem-based fisheries management perspective, a link between functional complementarity and productivity, indicates that ecosystem resilience may decline with productivity. Based on this, we advise that system productivity, perhaps monitored as forage fish growth, becomes......1. Forage fish populations support large scale fisheries and are key components of marine ecosystems across the world, linking secondary production to higher trophic levels. While climate-induced changes in the North Sea zooplankton community are described and documented in literature......, the associated bottom-up effects and consequences for fisheries remain largely unidentified. 2. We investigated the temporal development in forage fish productivity and the associated influence on fisheries yield of herring, sprat, Norway pout and sandeel in the North Sea. Using principal component analysis, we...

  5. Contamination with heavy metals and bacteria in some local and imported fish and fish products

    International Nuclear Information System (INIS)

    Salem, S.B.; El-Dashlout, A.A.; El-Schiwee, M.A.; EL-Shourbagy, G.A.; Ibrahim, R.E.

    2004-01-01

    Some local and imported fish and fish products sold in retail markets of three cities at Sharkia Governorate, Egypt, were examined against heavy metals contamination (i.e. Pb, Cd and Hg) and the presence of some specific groups of bacteria. The results showed that concentrations of Pb in fresh and frozen fish, salted and smoked fish and canned fish samples were lower than the permissible limits recommended by the Egyptian Organization 1993 (1.0 mg/kg). On the other hand, all the tested fish and fish products of collected samples showed levels of Cd (0.29-0.41 mg/kg) higher than the permissible limit (0.10 mg/kg) recommended by the Egyptian Organization. Such limits should be re-considered because the limit determined by WHO (1992) was 0.5 mg/kg. Mercury level in fresh mullet was equal or lower (0.46-0.50 mg/kg) than the limit of Egyptian Organization (0.50 mg/kg) while other fresh and frozen fish, salted and smoked fish samples had higher Hg than the allowance. In most cases, imported canned products of sardine, mackerel and tuna had higher Pb, Cd and Hg concentrations than that found in the local ones. Among fresh fish samples, such as mackarona, contained the highest total bacterial count, while mullet was the lowest. Considering salted and smoked fish, heavy salted mullet had the highest total bacterial count, while the lowest number was recorded in salted sardine. Smoked herring showed lowest total bacterial count than salted samples. Generally, no correlation was observed between fish species or consumption place and the contamination with heavy metals and bacteria

  6. Multivariate image analysis for quality inspection in fish feed production

    DEFF Research Database (Denmark)

    Ljungqvist, Martin Georg

    Aquaculture is today one of the fastest growing food producing sectors in the world. Access to good and effective fish feed is a condition for optimised and sustainable aquaculture activity. In the aquaculture industry it is of utmost importance that the fish get feed of proper size and nutrition....... The colour appearance of fish products is important for customers. Salmonid fish get their red colour from a natural pigment called astaxanthin. To ensure a similar red colour of fish in aquaculture astaxanthin is used as an additive coated on the feed pellets. Astaxanthin can either be of natural origin......, or synthesised chemically. Common for both types is that they are relatively expensive in comparison to the other feed ingredients. This thesis investigates multi-variate data collection for visual inspection and optimisation of industrial production in the fish feed industry. Quality parameters focused on here...

  7. Data on the chemical properties of commercial fish sauce products.

    Science.gov (United States)

    Nakano, Mitsutoshi; Sagane, Yoshimasa; Koizumi, Ryosuke; Nakazawa, Yozo; Yamazaki, Masao; Watanabe, Toshihiro; Takano, Katsumi; Sato, Hiroaki

    2017-12-01

    This data article reports on the chemical properties of commercial fish sauce products associated with the fish sauce taste and flavor. All products were analyzed in triplicate. Dried solid content was analyzed by moisture analyzer. Fish sauce salinity was determined by a salt meter. pH was measured using a pH meter. The acidity was determined using a titration assay. Amino nitrogen and total nitrogen were evaluated using a titration assay and Combustion-type nitrogen analyzer, respectively. The analyzed products originated from Japan, Thailand, Vietnam, China, the Philippines, and Italy. Data on the chemical properties of the products are provided in table format in the current article.

  8. Emerging role of phenolic compounds as natural food additives in fish and fish products.

    Science.gov (United States)

    Maqsood, Sajid; Benjakul, Soottawat; Shahidi, Fereidoon

    2013-01-01

    Chemical and microbiological deteriorations are principal causes of quality loss of fish and fish products during handling, processing, and storage. Development of rancid odor and unpleasant flavor, changes of color and texture as well as lowering nutritional value in fish can be prevented by appropriate use of additives. Due to the potential health hazards of synthetic additives, natural products, especially antioxidants and antimicrobial agents, have been intensively examined as safe alternatives to synthetic compounds. Polyphenols (PP) are the natural antioxidants prevalent in fruits, vegetables, beverages (tea, wine, juices), plants, seaweeds, and some herbs and show antioxidative and antimicrobial activities in different fish and fish products. The use of phenolic compounds also appears to be a good alternative for sulphiting agent for retarding melanosis in crustaceans. Phenolic compounds have also been successfully employed as the processing aid for texture modification of fish mince and surimi. Thus, plant polyphenolic compounds can serve as potential additives for preventing quality deterioration or to retain the quality of fish and fish products.

  9. Mercury in fish from two Nicaraguan lakes: A recommendation for increased monitoring of fish for international commerce

    International Nuclear Information System (INIS)

    McCrary, Jeffrey K.; Castro, Mark; McKaye, Kenneth R.

    2006-01-01

    We measured total mercury concentrations in water and fish of Lake Managua and Lake Apoyo. Water mercury concentrations were 10-fold higher in Lake Managua than in Lake Apoyo, although differences in mercury concentration in the most common native fish were not significant. One-fourth of the commercially fished tilapia in Lake Managua exceeded maximum recommended mercury levels for consumption among pregnant women and other at-risk groups, although bioavailability to fishes was lower than in previously studied sites in Brazil and Western Maryland. The lower bioavailiability may present important information for management options to reduce mercury exposure to fishes and humans. We recommend closer mercury monitoring among freshwater fish destined for international commerce. - Fish commonly exported into the international food supply may be contaminated with mercury

  10. Mercury in fish from two Nicaraguan lakes: A recommendation for increased monitoring of fish for international commerce

    Energy Technology Data Exchange (ETDEWEB)

    McCrary, Jeffrey K. [University of Central America, Apdo. 69, Managua (Nicaragua) and College of Natural Resources, Virginia Tech, Blacksburg, VA 24061 (United States)]. E-mail: jmccrary2@yahoo.com; Castro, Mark [Appalachian Laboratory, University of Maryland Center for Environmental Science, 301 Braddock Road, Frostburg, MD 21532 (United States); McKaye, Kenneth R. [University of Central America, Apdo. 69, Managua (Nicaragua); Appalachian Laboratory, University of Maryland Center for Environmental Science, 301 Braddock Road, Frostburg, MD 21532 (United States)

    2006-06-15

    We measured total mercury concentrations in water and fish of Lake Managua and Lake Apoyo. Water mercury concentrations were 10-fold higher in Lake Managua than in Lake Apoyo, although differences in mercury concentration in the most common native fish were not significant. One-fourth of the commercially fished tilapia in Lake Managua exceeded maximum recommended mercury levels for consumption among pregnant women and other at-risk groups, although bioavailability to fishes was lower than in previously studied sites in Brazil and Western Maryland. The lower bioavailiability may present important information for management options to reduce mercury exposure to fishes and humans. We recommend closer mercury monitoring among freshwater fish destined for international commerce. - Fish commonly exported into the international food supply may be contaminated with mercury.

  11. Accounting for Incomplete Species Detection in Fish Community Monitoring

    Energy Technology Data Exchange (ETDEWEB)

    McManamay, Ryan A [ORNL; Orth, Dr. Donald J [Virginia Polytechnic Institute and State University; Jager, Yetta [ORNL

    2013-01-01

    Riverine fish assemblages are heterogeneous and very difficult to characterize with a one-size-fits-all approach to sampling. Furthermore, detecting changes in fish assemblages over time requires accounting for variation in sampling designs. We present a modeling approach that permits heterogeneous sampling by accounting for site and sampling covariates (including method) in a model-based framework for estimation (versus a sampling-based framework). We snorkeled during three surveys and electrofished during a single survey in suite of delineated habitats stratified by reach types. We developed single-species occupancy models to determine covariates influencing patch occupancy and species detection probabilities whereas community occupancy models estimated species richness in light of incomplete detections. For most species, information-theoretic criteria showed higher support for models that included patch size and reach as covariates of occupancy. In addition, models including patch size and sampling method as covariates of detection probabilities also had higher support. Detection probability estimates for snorkeling surveys were higher for larger non-benthic species whereas electrofishing was more effective at detecting smaller benthic species. The number of sites and sampling occasions required to accurately estimate occupancy varied among fish species. For rare benthic species, our results suggested that higher number of occasions, and especially the addition of electrofishing, may be required to improve detection probabilities and obtain accurate occupancy estimates. Community models suggested that richness was 41% higher than the number of species actually observed and the addition of an electrofishing survey increased estimated richness by 13%. These results can be useful to future fish assemblage monitoring efforts by informing sampling designs, such as site selection (e.g. stratifying based on patch size) and determining effort required (e.g. number of

  12. Radiation processing for value addition in fish and fishery products

    International Nuclear Information System (INIS)

    Bandekar, J.R.; Karani, M.; Kakatkar, A.S.; Sharma, A.

    2009-01-01

    Fish is highly nutritious as it contains easily digestible proteins and nutritionally important vitamins and polyunsaturated fatty acids. However, due to high ambient temperature in tropical countries, fish is spoiled rapidly. Spoilage of fish during transportation and storage amounting to about 30% of the catch results in heavy economic losses. The microbiological hazard related to the presence of food-borne pathogens is also common in both marine and aqua-cultured fish and shellfish. In dried products (moisture content, < 20%) insects are mainly responsible for the loss of quality during storage. Radiation processing can play a major role in ensuring security and safety of fish and fishery products by reducing post-harvest losses and eliminating pathogenic microorganisms. Being a 'cold process' the technology helps in retaining the quality of fishery products in 'as is' condition. (author)

  13. The technology of fish-vegetable feed production

    Directory of Open Access Journals (Sweden)

    Mukatova M. D.

    2016-09-01

    Full Text Available Perspective direction of the Volga-Caspian basin fisheries is increasing the productivity of aquaculture production which requires the availability of sufficient quantities of feed. The cutting waste of carp and crucian carp, crayfish processing (cephalothorax, wheat bran, soy isolate, freshwater plants – pondweed perfoliate, fish-vegetable ration, produced feeding staffs have been investigated. In researching samples of manufactured pelleted feeds the standard methods adopted in the animal feed industry have been used. The number of nitrogen-free extractives and energy value has been determined by calculation. The composition of fish-vegetable ration has been worked out. Some manufacturing inspection of fish-vegetable feed technology using proofing process has been carried out. The possibility of manufacturing on the basis of crushed fish waste of the company LLC "VES" and dry ingredients of fish-vegetable feed has been determined; the output of feed at water content of not more than 10 % is 43 % of feed mix based on the mass of directed waste equal to 84 %. The pilot batch of dry fish-vegetable feed has been investigated to establish quality indicators. It has been determined that fish-vegetable feed meets the requirements of GOST 10385–2014 "Combined feeding staffs for fishes. General specifications" as for main quality indicators and refers to economic grower for catfish and carp fish weighing more than 50 g. This reveals good palatability of the experimental batch of floating feed by carp fish species and African catfish. Thus, fish-vegetable feed manufacturing technology can be implemented in the production for processing secondary raw materials: waste from butchering fish by grinding, cooking, mixing with selected vegetable fillings which is waste of flour or grain processing industries and freshwater plants mowed annually during the reclamation works on the Volga delta.

  14. FRESHWATER FISH FARMING CONDITIONS IN 1999 AND THE PRODUCTION PLAN FOR 2000

    Directory of Open Access Journals (Sweden)

    Zlatko Homen

    2000-09-01

    Full Text Available One of the activities of the Ministry of Agriculture and Forestry, Fishery and Mediterranean Agriculture Directorate, i. e. Fishery Directorate to be more specific, is the monitoring of conditions in freshwater fish farming. The objective of this work is to show conditions in freshwater fish farming during 1999. and to provide a production plan for 2000. It will also provide detailed insight into the present conditions in freshwater fish farming and into the production trends of this field. Regarding this issue, the »Questionnaire for the Monitoring of Conditions in Freshwater Fish Farming«, was sent to fish farmers aroud the country data was processed from 22 cap ponds and 13 trout ponds. Roughe estimates of conditions were conducted for 2 fish farms, since they haven’t yet returned the mandatoruy questionnaire, i. e. the necessary data. This work features data on the number of employees in fish farms, as well as their qualifications, on the actual production and distribution of farmed freshwater fish, on the areas where production was conducted and on the overall yield. Fish food, raw materials, used tools and incentive funds paid were also taken into consideration. The difficulties faced in this branch of the economy are also inicated. Compared to 1998, a slight decrease in the number of employees of freshwater fish farms has been recorded. The total number of employees in 1999 was 655, of which 555 were on carp ponds and 100 on trout ponds. Data on the qualifications of employees for 1999 show that most of them were unskilled workers, while highly skilled workers make up a minority in this work force. The total production of freshwater in 1999. amoounted to 6.185,51 tons. Of this amount 5.592,52 tons were warm-water fish specied and 592,99 tons were cold-water fish species. Compared to 1998, production decreased by 4,89 percent. Production for 2000 has been planned to increase by 22,15 percent, i. e. the production quantity is projected

  15. Fish oil quality of by-product (fish skin from swangi fish

    Directory of Open Access Journals (Sweden)

    La Ode Huli

    2015-01-01

    Full Text Available The skin of swangi fish is a potential fish skin to be produced for fish oil. The objectives of this research were aimed to determine the yield and the best quality of fish oil and also to compare fatty acid profile of the fish according to different extraction methods. Fish oil extractions were used by wet rendering method with extraction temperatures of 60, 70, 80, 90, 100°C for 20, 30, and 40 minutes. Fish oil quality was determined by the chemical oil characteristics i.e. PV, FFA, AV, anisidin, and TOTOX. Fatty acid profile was analyzed using gas chromatography (Shimadzu. The results of the study showed that the highest fish oil yield in each treatment was obtained extraction temperature of 60°C for 30 minutes with percentage of 0.33, (70°C for 30 minutes 0.46, (80°C for 30 minutes 1.23, (90°C for 20 minutes 1.14 and (100°C for 20 minutes 0.84. These values were lower compare to Bligh & Dyer and Soxhlet methods. Then, the best fish oil quality was resulted on temperature extraction of 60°C for 30 minutes with PV, FFA, anisidin, AV, and TOTOX were 9.17 meq/kg, 6.92%, 13,77 mg KOH/g, 0.86 meq/kg and 19.19 meq/kg, respectively. FUFA fatty acid compositions of swangi skin fish oil especially EPA and DHA in wet rendering method were gained 0.73% and 2.53%, respectively. These results were lower than Bligh & Dyer method which was consisted of 3.66% (EPA, and 13.29% (DHA and also Soxhlet extraction method with value of EPA was 2.78% and DHA was 9.62%.Keywords: EPA, extraction temperature, DHA, fish oil quality, fish skin

  16. High-resolution Mass Spectrometry of Skin Mucus for Monitoring Physiological Impacts in Fish Exposed to Wastewater Effluent at a Great Lakes AOC

    Science.gov (United States)

    High-resolution mass spectrometry is advantageous for monitoring physiological impacts and contaminant biotransformation products in fish exposed to complex wastewater effluent. We evaluated this technique using skin mucus from male and female fathead minnows (Pimephales promela...

  17. Productivity and fishing pressure drive variability in fish parasite assemblages of the Line Islands, equatorial Pacific.

    Science.gov (United States)

    Wood, Chelsea L; Baum, Julia K; Reddy, Sheila M W; Trebilco, Rowan; Sandin, Stuart A; Zgliczynski, Brian J; Briggs, Amy A; Micheli, Fiorenza

    2015-05-01

    Variability in primary productivity and fishing pressure can shape the abundance, species composition, and diversity of marine life. Though parasites comprise nearly half of marine species, their responses to these important forces remain little explored. We quantified parasite assemblages at two spatial scales, across a gradient in productivity and fishing pressure that spans six coral islands of the Line Islands archipelago and within the largest Line Island, Kiritimati, which experiences a west-to-east gradient in fishing pressure and upwelling-driven productivity. In the across-islands data set, we found that increasing productivity was correlated with increased parasite abundance overall, but that the effects of productivity differed among parasite groups. Trophically transmitted parasites increased in abundance with increasing productivity, but directly transmitted parasites did not exhibit significant changes. This probably arises because productivity has stronger effects on the abundance of the planktonic crustaceans and herbivorous snails that serve as the intermediate hosts of trophically transmitted parasites than on the higher-trophic level fishes that are the sole hosts of directly transmitted parasites. We also found that specialist parasites increased in response to increasing productivity, while generalists did not, possibly because specialist parasites tend to be more strongly limited by host availability than are generalist parasites. After the effect of productivity was controlled for, fishing was correlated with decreases in the abundance of trophically transmitted parasites, while directly transmitted parasites appeared to track host density; we observed increases in the abundance of parasites using hosts that experienced fishing-driven compensatory increases in abundance. The within-island data set confirmed these patterns for the combined effects of productivity and fishing on parasite abundance, suggesting that our conclusions are robust

  18. WOMEN’S WORK IN THE ARTISANAL FISHING PRODUCTIVE CHAIN

    Directory of Open Access Journals (Sweden)

    Marina Morenna A. Figueiredo

    2014-08-01

    Full Text Available The analysis here developed is based on studies focusing on women’s participation in artisanal fishing, conducted in communities of the county of Canavieiras – BA. Women’s achievements regarding their insertion in the labor market have raised new issues and questions as to the production process in fishing communities, where women’s work is still marked by its invisibility and lack of recognition within the fishing category. Quite often, women’s work is regarded merely as an extension of their roles as mothers/wives/housewives which are superimposed upon their fishing activities. In many cases, for instance, the preparation of the fish by the women, for marketing purposes, even when adding value to the product, is regarded by both fishermen and fisherwomen as an extension of domestic tasks, precisely because is undertaken within the realms of their own homes.

  19. Utilization of geothermal energy for drying fish products

    International Nuclear Information System (INIS)

    Arason, S.; Arnason, H.

    1992-01-01

    This paper is about industrial uses of geothermal energy for drying of fish products. Drying is an ancient method for preservation of foods, the main purpose of which is to increase the preservation time. For drying, an external source of energy is needed to extract water. In this paper an emphasis is placed on drying fish and associated processes, and how geothermal energy can be used to substitute oil or electricity. The Icelandic Fisheries Laboratories have been experimenting with different methods of drying, and several drying stations have been designed for indoor drying of fish products. Today there are more than a dozen companies in this country which are drying fish indoors using for that purpose electricity and/or geothermal energy. Further possibilities are available when fish processing plants are located in geothermal areas

  20. Anisakid nematodes as possible markers to trace fish products

    Directory of Open Access Journals (Sweden)

    Vincenzo Ferrantelli

    2015-03-01

    Full Text Available In this work a total of 949 fish samples were analysed for the identification of nematode larvae belonging to the Anisakidae family. Biomolecular application for the identification of Anisakidae larvae can be an optimal instrument for the traceability of fish products, described on the Reg. EC 178/2002. Results confirm a correlation between geographical distribution of fishes and presence of specific Anisakid larvae. FAO 37 zone (Mediterranean sea showed a prevailing distribution of Anisakis pegreffii and a minimal presence of A. simplex s.s. in hybrid form with Anisakis pegreffii. FAO 27 zone showed a prevailing distribution of A. simplex s.s. in fish like Brosme (Brosme brosme and infestation prevalence of Pseudoterranova krabbei and P. decipiens s.s. in Gadus morhua. Obtained results validate the hypothesis that molecular biology methods for identifying Anisakidae larvae are effective traceability markers of fish products.

  1. Survey of n-3 and n-6 polyunsaturated fatty acids in fish and fish products.

    Science.gov (United States)

    Strobel, Claudia; Jahreis, Gerhard; Kuhnt, Katrin

    2012-10-30

    The imbalance of the n-3/n-6 ratio in the Western diet is characterised by a low intake of n-3 long-chain (LC) PUFA and a concurrent high intake of n-6 PUFA. Fish, in particular marine fish, is a unique source of n-3 LC PUFA. However, FA composition of consumed fish changed, due to the increasing usage of n-6 PUFA-rich vegetable oils in aquaculture feed and in fish processing (frying) which both lead to a further shift in n-6 PUFA to the detriment of n-3 LC PUFA.The aim of this study was to determine the ratio of n-3/n-6 including the contents of EPA and DHA in fish fillets and fish products from the German market (n=123). Furthermore, the study focussed on the FA content in farmed salmon compared to wild salmon as well as in processed Alaska pollock fillet, e.g., fish fingers. Total fat and FA content in fish products varied considerably depending on fish species, feed management, and food processing. Mackerel, herring and trout fillets characteristically contained adequate dietary amounts of absolute EPA and DHA, due to their high fat contents. However, despite a lower fat content, tuna, pollock, and Alaska pollock can contribute considerable amounts of EPA and DHA to the human supply.Farmed salmon are an appropriate source of EPA and DHA owing to their higher fat content compared to wild salmon (12.3 vs. 2.1 wt %), however with elevated SFA, n-9 and n-6 FA contents representing the use of vegetable oils and oilseeds in aquaculture feed. The n-3/n-6 ratio was deteriorated (2.9 vs. 12.4) but still acceptable. Compared to pure fish fillets, breaded and pre-fried Alaska pollock fillet contained extraordinarily high fat and n-6 PUFA levels. Since fish species vary with respect to their n-3 LC PUFA contents, eating a variety of fish is advisable. High n-6 PUFA containing pre-fried fish support the imbalance of n-3/n-6 ratio in the Western diet. Thus, consumption of pure fish fillets is to be favoured. The lower n-3 PUFA portion in farmed fish can be offset by the

  2. Survey of n-3 and n-6 polyunsaturated fatty acids in fish and fish products

    Directory of Open Access Journals (Sweden)

    Strobel Claudia

    2012-10-01

    Full Text Available Abstract Background The imbalance of the n-3/n-6 ratio in the Western diet is characterised by a low intake of n-3 long-chain (LC PUFA and a concurrent high intake of n-6 PUFA. Fish, in particular marine fish, is a unique source of n-3 LC PUFA. However, FA composition of consumed fish changed, due to the increasing usage of n-6 PUFA-rich vegetable oils in aquaculture feed and in fish processing (frying which both lead to a further shift in n-6 PUFA to the detriment of n-3 LC PUFA. The aim of this study was to determine the ratio of n-3/n-6 including the contents of EPA and DHA in fish fillets and fish products from the German market (n=123. Furthermore, the study focussed on the FA content in farmed salmon compared to wild salmon as well as in processed Alaska pollock fillet, e.g., fish fingers. Results Total fat and FA content in fish products varied considerably depending on fish species, feed management, and food processing. Mackerel, herring and trout fillets characteristically contained adequate dietary amounts of absolute EPA and DHA, due to their high fat contents. However, despite a lower fat content, tuna, pollock, and Alaska pollock can contribute considerable amounts of EPA and DHA to the human supply. Farmed salmon are an appropriate source of EPA and DHA owing to their higher fat content compared to wild salmon (12.3 vs. 2.1 wt %, however with elevated SFA, n-9 and n-6 FA contents representing the use of vegetable oils and oilseeds in aquaculture feed. The n-3/n-6 ratio was deteriorated (2.9 vs. 12.4 but still acceptable. Compared to pure fish fillets, breaded and pre-fried Alaska pollock fillet contained extraordinarily high fat and n-6 PUFA levels. Conclusions Since fish species vary with respect to their n-3 LC PUFA contents, eating a variety of fish is advisable. High n-6 PUFA containing pre-fried fish support the imbalance of n-3/n-6 ratio in the Western diet. Thus, consumption of pure fish fillets is to be favoured. The lower

  3. Production of Fish Hydrolysates Protein From Waste of Fish Carp (Cyprinus Carpio by Enzymatic Hydrolysis

    Directory of Open Access Journals (Sweden)

    Dede Saputra

    2016-03-01

    Full Text Available Fish Protein Hydrolysates (FPH is the mixed products of polypeptide, dipeptides, and amino acid. It can be produced from materials that contained of protein by acid reaction, base reaction or enzymatic hydrolysis. The objectives of this study were to study the production of FPH from fish carp meat at post rigor phase and viscera by enzymatic hydrolysis, to determine the specific activity of papain enzyme, and to determine the solubility of FPH. Capacity of fish hydrolyzing can be identified by analyzing the content of dissolved total nitrogen (NTT compared with nitrogen total ingredient (NTB in order to get the value of total soluble nitrogen/total nitrogen material (NTT/NTB. The hydrolysis processes were carried out in 0,26% (w/v papain, 60 οC for 3 hours. The result showed that the specific activity of papain enzyme was about 3.28 U/mg. Solubility of FPH by comparing NTT/NTB was about 0.29% (fish meat and 0.40% (fish viscera. Proximate test of protein content of fish meat was 18.34 ± 0.04 (g/100 g; while viscera was about 0.95±0.04 (g/100 g. The result indicated that product waste of fish carp had potential as a major of source of FPH.

  4. Is it appropriate to composite fish samples for mercury trend monitoring and consumption advisories?

    Science.gov (United States)

    Gandhi, Nilima; Bhavsar, Satyendra P; Gewurtz, Sarah B; Drouillard, Ken G; Arhonditsis, George B; Petro, Steve

    2016-03-01

    Monitoring mercury levels in fish can be costly because variation by space, time, and fish type/size needs to be captured. Here, we explored if compositing fish samples to decrease analytical costs would reduce the effectiveness of the monitoring objectives. Six compositing methods were evaluated by applying them to an existing extensive dataset, and examining their performance in reproducing the fish consumption advisories and temporal trends. The methods resulted in varying amount (average 34-72%) of reductions in samples, but all (except one) reproduced advisories very well (96-97% of the advisories did not change or were one category more restrictive compared to analysis of individual samples). Similarly, the methods performed reasonably well in recreating temporal trends, especially when longer-term and frequent measurements were considered. The results indicate that compositing samples within 5cm fish size bins or retaining the largest/smallest individuals and compositing in-between samples in batches of 5 with decreasing fish size would be the best approaches. Based on the literature, the findings from this study are applicable to fillet, muscle plug and whole fish mercury monitoring studies. The compositing methods may also be suitable for monitoring Persistent Organic Pollutants (POPs) in fish. Overall, compositing fish samples for mercury monitoring could result in a substantial savings (approximately 60% of the analytical cost) and should be considered in fish mercury monitoring, especially in long-term programs or when study cost is a concern. Crown Copyright © 2015. Published by Elsevier Ltd. All rights reserved.

  5. Biosurfactant production by Pseudomonas aeruginosain kefir and fish meal.

    Science.gov (United States)

    Kaskatepe, Banu; Yildiz, Sulhiye; Gumustas, Mehmet; Ozkan, Sibel A

    2015-01-01

    The aim of this study was to increase rhamnolipid production by formulating media using kefir and fish meal for Pseudomonas aeruginosa strains isolated from different environmental resources. The strains, named as H1, SY1, and ST1, capable of rhamnolipid production were isolated from soil contaminated with wastes originating from olive and fish oil factories. Additionally, P. aeruginosa ATCC 9027 strain, which is known as rhamnolipid producer, was included in the study. Initially, rhamnolipid production by the strains was determined in Mineral Salt Medium (MSM) and then in media prepared by using kefir and fish meal. The obtained rhamnolipids were purified and quantified according to Dubois et al. (1956). The quantity of rhamnolipids of ATCC, H1 and SY1 strains in kefir media were determined as 11.7 g/L, 10.8 g/L and 3.2 g/L, respectively, and in fish meal media as 12.3 g/L, 9.3 g/L and 10.3 g/L, respectively. In addition, effect of UV light exposure on rhamnolipid production was also investigated but contrary a decrease was observed. The results indicate that P. aeruginosa strains isolated from various environmental resources used in this study can be important due to their rhamnolipid yield, and fish meal, which is obtained from waste of fish, can be an alternative source in low cost rhamnolipid production.

  6. Biosurfactant production by Pseudomonas aeruginosain kefir and fish meal

    Directory of Open Access Journals (Sweden)

    Banu Kaskatepe

    2015-09-01

    Full Text Available The aim of this study was to increase rhamnolipid production by formulating media using kefir and fish meal for Pseudomonas aeruginosa strains isolated from different environmental resources. The strains, named as H1, SY1, and ST1, capable of rhamnolipid production were isolated from soil contaminated with wastes originating from olive and fish oil factories. Additionally, P. aeruginosa ATCC 9027 strain, which is known as rhamnolipid producer, was included in the study. Initially, rhamnolipid production by the strains was determined in Mineral Salt Medium (MSM and then in media prepared by using kefir and fish meal. The obtained rhamnolipids were purified and quantified according to Dubois et al. (1956. The quantity of rhamnolipids of ATCC, H1 and SY1 strains in kefir media were determined as 11.7 g/L, 10.8 g/L and 3.2 g/L, respectively, and in fish meal media as 12.3 g/L, 9.3 g/L and 10.3 g/L, respectively. In addition, effect of UV light exposure on rhamnolipid production was also investigated but contrary a decrease was observed. The results indicate that P. aeruginosa strains isolated from various environmental resources used in this study can be important due to their rhamnolipid yield, and fish meal, which is obtained from waste of fish, can be an alternative source in low cost rhamnolipid production.

  7. Fish trypsins: potential applications in biomedicine and prospects for production.

    Science.gov (United States)

    Jesús-de la Cruz, Kristal; Álvarez-González, Carlos Alfonso; Peña, Emyr; Morales-Contreras, José Antonio; Ávila-Fernández, Ángela

    2018-04-01

    In fishes, trypsins are adapted to different environmental conditions, and the biochemical and kinetic properties of a broad variety of native isoforms have been studied. Proteolytic enzymes remain in high demand in the detergent, food, and feed industries; however, our analysis of the literature showed that, in the last decade, some fish trypsins have been studied for the synthesis of industrial peptides and for specific biomedical uses as antipathogenic agents against viruses and bacteria, which have been recently patented. In addition, innovative strategies of trypsin administration have been studied to ensure that trypsins retain their properties until they exert their action. Biomedical uses require the production of high-quality enzymes. In this context, the production of recombinant trypsins is an alternative. For this purpose, E. coli -based systems have been tested for the production of fish trypsins; however, P. pastoris -based systems also seem to show great potential in the production of fish trypsins with higher production quality. On the other hand, there is a lack of information regarding the specific structures, biochemical and kinetic properties, and characteristics of trypsins produced using heterologous systems. This review describes the potential uses of fish trypsins in biomedicine and the enzymatic and structural properties of native and recombinant fish trypsins obtained to date, outlining some prospects for their study.

  8. Decontamination of fish and seafood products by irradiation

    International Nuclear Information System (INIS)

    Luna C, P.C.

    1992-05-01

    An alternative to prolong the useful shelf life of the fish and of the sea products is the use of the ionizing radiation. The radiation process in combination with other conservation methods like the refrigeration or freezing, assures the hygienic quality of the marine products, eliminating bacteria that cause decomposition as well as of others that produce illnesses and that they are transmitted through these, like is the case of Vibrio Cholera, Salmonella, Shigella Yersinia etc. In this document the technical feasibility of the irradiation applied to the fish and the sea products, in fresh, refrigerated and frozen form will be analyzed. (Author)

  9. Cost effective system for monitoring of fish migration with a camera

    Science.gov (United States)

    Sečnik, Matej; Brilly, Mitja; Vidmar, Andrej

    2016-04-01

    Within the European LIFE project Ljubljanica connects (LIFE10 NAT/SI/000142) we have developed a cost-effective solution for the monitoring of fish migration through the fish passes with the underwater camera. In the fish pass at Ambrožev trg and in the fish pass near the Fužine castle we installed a video camera called "Fishcam" to be able to monitor the migration of fish through the fish passes and success of its reconstruction. Live stream from fishcams installed in the fishpassesis available on our project website (http://ksh.fgg.uni-lj.si/ljubljanicaconnects/ang/12_camera). The system for the fish monitoring is made from two parts. First is the waterproof box for the computer with charger and the second part is the camera itself. We used a high sensitive Sony analogue camera. The advantage of this camera is that it has very good sensitivity in low light conditions, so it can take good quality pictures even at night with a minimum additional lighting. For the night recording we use additional IR reflector to illuminate passing fishes. The camera is connected to an 8-inch tablet PC. We decided to use a tablet PC because it is quite small, cheap, it is relatively fast and has a low power consumption. On the computer we use software which has advanced motion detection capabilities, so we can also detect the small fishes. When the fish is detected by a software, its photograph is automatically saved to local hard drive and for backup also on Google drive. The system for monitoring of fish migration has turned out to work very well. From the beginning of monitoring in June 2015 to end of the year there were more than 100.000 photographs produced. The first analysis of them was already prepared estimating fish species and their frequency in passing the fish pass.

  10. Fish product mislabelling: failings of traceability in the production chain and implications for illegal, unreported and unregulated (IUU) fishing.

    Science.gov (United States)

    Helyar, Sarah J; Lloyd, Hywel Ap D; de Bruyn, Mark; Leake, Jonathan; Bennett, Niall; Carvalho, Gary R

    2014-01-01

    Increasing consumer demand for seafood, combined with concern over the health of our oceans, has led to many initiatives aimed at tackling destructive fishing practices and promoting the sustainability of fisheries. An important global threat to sustainable fisheries is Illegal, Unreported and Unregulated (IUU) fishing, and there is now an increased emphasis on the use of trade measures to prevent IUU-sourced fish and fish products from entering the international market. Initiatives encompass new legislation in the European Union requiring the inclusion of species names on catch labels throughout the distribution chain. Such certification measures do not, however, guarantee accuracy of species designation. Using two DNA-based methods to compare species descriptions with molecular ID, we examined 386 samples of white fish, or products labelled as primarily containing white fish, from major UK supermarket chains. Species specific real-time PCR probes were used for cod (Gadus morhua) and haddock (Melanogrammus aeglefinus) to provide a highly sensitive and species-specific test for the major species of white fish sold in the UK. Additionally, fish-specific primers were used to sequence the forensically validated barcoding gene, mitochondrial cytochrome oxidase I (COI). Overall levels of congruence between product label and genetic species identification were high, with 94.34% of samples correctly labelled, though a significant proportion in terms of potential volume, were mislabelled. Substitution was usually for a cheaper alternative and, in one case, extended to a tropical species. To our knowledge, this is the first published study encompassing a large-scale assessment of UK retailers, and if representative, indicates a potentially significant incidence of incorrect product designation.

  11. Fish product mislabelling: failings of traceability in the production chain and implications for illegal, unreported and unregulated (IUU fishing.

    Directory of Open Access Journals (Sweden)

    Sarah J Helyar

    Full Text Available Increasing consumer demand for seafood, combined with concern over the health of our oceans, has led to many initiatives aimed at tackling destructive fishing practices and promoting the sustainability of fisheries. An important global threat to sustainable fisheries is Illegal, Unreported and Unregulated (IUU fishing, and there is now an increased emphasis on the use of trade measures to prevent IUU-sourced fish and fish products from entering the international market. Initiatives encompass new legislation in the European Union requiring the inclusion of species names on catch labels throughout the distribution chain. Such certification measures do not, however, guarantee accuracy of species designation. Using two DNA-based methods to compare species descriptions with molecular ID, we examined 386 samples of white fish, or products labelled as primarily containing white fish, from major UK supermarket chains. Species specific real-time PCR probes were used for cod (Gadus morhua and haddock (Melanogrammus aeglefinus to provide a highly sensitive and species-specific test for the major species of white fish sold in the UK. Additionally, fish-specific primers were used to sequence the forensically validated barcoding gene, mitochondrial cytochrome oxidase I (COI. Overall levels of congruence between product label and genetic species identification were high, with 94.34% of samples correctly labelled, though a significant proportion in terms of potential volume, were mislabelled. Substitution was usually for a cheaper alternative and, in one case, extended to a tropical species. To our knowledge, this is the first published study encompassing a large-scale assessment of UK retailers, and if representative, indicates a potentially significant incidence of incorrect product designation.

  12. Mercury monitoring in fish using a non-lethal tissue biopsy method

    Science.gov (United States)

    Ackerson, J; Schmitt, Christopher J.; McKee, J; Brumbaugh, W. G.

    2010-01-01

    The occurrence of mercury in fish is well-known and often occurs at levels that warrant restricted consumption by sensitive human populations. Because of this, local wildlife and health agencies have developed monitoring programs to identify the magnitude of fish contamination and changes through time. Monitoring mercury levels in fish typically requires killing fish for removal of a fillet. Recently, researchers have proposed the use of a non-lethal tissue biopsy plug method as a surrogate for analysis of the entire fillet.

  13. Waste composting and proving fish for production the organic fertilizers

    Directory of Open Access Journals (Sweden)

    Fernanda San Martins Sanes

    2015-06-01

    Full Text Available The volumes of waste generated in the fishing activity are increasing due to the increase in demand for these products. This implies the need for fast processing and cycling of these materials. Thus, the aim of this study was to evaluate the use of waste generated in the fishing activity as a source of organic fertilizers in agricultural production systems familiar ecological basis. The experiment was conducted at the Experimental Station Cascade / Embrapa Temperate Climate was assessed throughout the composting process and the fermentation of fish waste, identifying the main points that enable the use of these fertilizers in farming systems ecological base. The composting process of rice husk revealed be incomplete during the experiment. The compound prepared with fish waste and exhausted bark of acacia presents itself as a good source of nutrients for crops, which may be suitable as organic fertilizer for production of ecologically-based systems. For liquid organic fertilizer, the conditions under which the experiment was conducted, it is concluded that the compound resulting from aerobic or anaerobic fermentation of fish waste, present themselves as a viable source of nutrients for productive systems of ecological base. However, further studies need to be conducted to better understanding and qualification of both processes.

  14. The Impacts of wetland restoration on Fish Productivity in Nigeria

    Science.gov (United States)

    Ayorinde, O. A.; Okunade, K. M.; Agboola, D. M.; Adesokan, Z. A.

    2016-02-01

    Wetland is one of the resources of high value which has been exposed to indiscriminate use. It is an important ecosystem to fish and loss or degradation of wetland will have a direct consequence on sustainable fisheries. This paper reviewed the term "wetland", its functions and values, importance to fish production in Nigeria and threats to its sustainability. The term "wetland" has been defined by various researchers especially based on their profession and their needs but up till today there is no single definition accepted by all users. In Nigeria, the most commonly adopted is that of RAMSAR convention. Wetland has both marketed and non-marketed functions and values. They provide essential link in the life cycle of 75 percent of the fish and shell fish commercially harvested in the world and are vital to fish health. Despite the importance, there have been exceptional losses of wetlands. Lagos state alone has witnessed more than 96 percent loss. Major threats to wetlands are: agriculture, development, pollution and climate change. Therefore proper management of the wetland ecosystem is important in other to ensure continuous fish production.

  15. Combined production of fish and plants in recirculating water

    Energy Technology Data Exchange (ETDEWEB)

    Naegel, L.C.A.

    1977-01-01

    A pilot plant of ca 2000 l of recirculating fresh water for intensive fish production was constructed in a controlled-environment greenhouse. The feasibility was examined of using nutrients from fish wastewater, mainly oxidized nitrogenous compounds, for plant production, combined with an activated sludge system for water purification. The reduction of nitrates, formed during the extended aeration process by nitrifying bacteria, was not sufficient by higher plants and unicellular algae alone to reduce the nitrate concentration in our system significantly. An additional microbial denitrification step had to be included to effect maximal decrease in nitrogenous compounds. For fish culture in the pilot plant Tilapia mossambica and Cyprinus carpio were chosen as experimental fishes. Both fish species showed significant weight increases during the course of the experiment. Ice-lettuce and tomatoes were tested both in recirculating water and in batch culture. The unicellular algae Scenedesmus spp. were grown in a non-sterile batch culture. All plants grew well in the wastewater without additional nutrients. Determination of the physical and chemical parameters for optimum water purification, the most suitable ratio of denitrification by plants and by microorganisms, and the most favourable fish and plant species for combined culture in recirculating water are important and of current interest in view of the increasing demand for clean, fresh water, and the pressing need to find new ways of producing protein for human nutrition under prevailing conditions of an exponentially expanding world population.

  16. Monitoring of Aquatic Biota in Intensive Fish Farming System

    Directory of Open Access Journals (Sweden)

    Lukáš Mareš

    2017-01-01

    Full Text Available The aim of the study was to conduct a detailed research of aquatic invertebrates in the intensive breeding system of salmonid fish in order to determine the taxonomic composition of the community and its seasonal dynamics, and to identify those species that may be hosts of parasitic disease agents. To date, this issue has not been studied at all in the Czech Republic. Monitoring was conducted on the Danish type recirculation system near the municipality of Pravíkov in the Highlands of the Czech Republic from April till November 2015. A total of 9 series of samples were taken. Macrozoobenthos was evaluated in terms of taxonomic composition and abundance. Basic physicochemical properties of water (temperature, oxygen concentration, pH and conductivity were also measured. In total, 69 taxa of aquatic invertebrates were noted, with the wall being the richest with a mean abundance of 756 pcs/m2. Permanent groups predominated; the most numerous group was the subphylum Crustaceae, represented by a single species, Asellus aquticus.

  17. General-Purpose Monitoring during Speech Production

    Science.gov (United States)

    Ries, Stephanie; Janssen, Niels; Dufau, Stephane; Alario, F.-Xavier; Burle, Boris

    2011-01-01

    The concept of "monitoring" refers to our ability to control our actions on-line. Monitoring involved in speech production is often described in psycholinguistic models as an inherent part of the language system. We probed the specificity of speech monitoring in two psycholinguistic experiments where electroencephalographic activities were…

  18. Planning for Production of Freshwater Fish Fry in a Variable Climate in Northern Thailand.

    Science.gov (United States)

    Uppanunchai, Anuwat; Apirumanekul, Chusit; Lebel, Louis

    2015-10-01

    Provision of adequate numbers of quality fish fry is often a key constraint on aquaculture development. The management of climate-related risks in hatchery and nursery management operations has not received much attention, but is likely to be a key element of successful adaptation to climate change in the aquaculture sector. This study explored the sensitivities and vulnerability of freshwater fish fry production in 15 government hatcheries across Northern Thailand to climate variability and evaluated the robustness of the proposed adaptation measures. This study found that hatcheries have to consider several factors when planning production, including: taking into account farmer demand; production capacity of the hatchery; availability of water resources; local climate and other area factors; and, individual species requirements. Nile tilapia is the most commonly cultured species of freshwater fish. Most fry production is done in the wet season, as cold spells and drought conditions disrupt hatchery production and reduce fish farm demand in the dry season. In the wet season, some hatcheries are impacted by floods. Using a set of scenarios to capture major uncertainties and variability in climate, this study suggests a couple of strategies that should help make hatchery operations more climate change resilient, in particular: improving hatchery operations and management to deal better with risks under current climate variability; improving monitoring and information systems so that emerging climate-related risks are known sooner and understood better; and, research and development on alternative species, breeding programs, improving water management and other features of hatchery operations.

  19. Radionuclide levels in food, animals and agricultural products. Post Chernobyl monitoring in England and Wales

    International Nuclear Information System (INIS)

    1987-01-01

    Data are presented in the following lists: 1) General Monitoring results, for England and Wales, presented separately (milk, milk products, dairy, vegetables, fruit, meat, fish, game, herbage, honey). 2) Restricted area sheep monitoring results, England and Wales presented separately. (U.K.)

  20. A noninvasive monitoring device for anesthetics in fish

    DEFF Research Database (Denmark)

    Power, Deborah M.; Fuentes, Juan; Harrison, Adrian Paul

    2010-01-01

    A noninvasive device capable of recording both gill and lateral fin movements was assembled and used to analyze initial and post-treatment activity frequency (Hz) in fish exposed to anesthetics. Exposure of platy fish (Xiphosphorus maculatus) to saponins from quillaja bark (0.185 mM and 0.555 m...

  1. Development of mediator-type biosensor to wirelessly monitor whole cholesterol concentration in fish.

    Science.gov (United States)

    Takase, Mai; Murata, Masataka; Hibi, Kyoko; Huifeng, Ren; Endo, Hideaki

    2014-04-01

    We developed a wireless monitoring system to monitor fish condition by tracking the change in whole cholesterol concentration. The whole cholesterol concentration of fish is a source of steroid hormones or indicator of immunity level, which makes its detection important for tracking physiological condition of fish. Wireless monitoring system comprises of mediator-type biosensor and wireless transmission device. Biosensor is implantable to fish body, and transmission device is so light, in that fish is allowed to swim freely during monitoring. Cholesterol esterase and oxidase were fixated on to the detection site of biosensor and used to detect the whole cholesterol concentration. However, cholesterol oxidase incorporates oxidation-reduction reaction of oxygen for detection, which concentration fluctuates easily due to change in environmental condition. Meanwhile, mediator-type biosensor enables monitoring of whole cholesterol concentration by using mediator to substitute that oxidation-reduction reaction of oxygen. Characteristic of fabricated mediator-type biosensor was tested. The sensor output current of mediator-type biosensor remained stable compared to output current of non-mediator-type biosensor under fluctuating oxygen concentration of 0-8 ppm, which implied that this sensor is less affected by change in dissolved oxygen concentration. That biosensor was then implanted into fish for wireless monitoring. As a result, approximately 48 h of real-time monitoring was successful.

  2. Thirty years of monitoring traditional fish trap catches at Kosi Bay ...

    African Journals Online (AJOL)

    ... mark and recapture studies, suggest a very high, and possibly unsustainable, catch rate that requires management intervention to return them back to historical and sustainable levels. Keywords: catch monitoring, estuarine, fisheries, fish marking, fish traps, iSimangaliso, overfishing, South-East Africa, World Heritage Site

  3. Improved Processing and Marketing of Healthy Fish Products in ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Improved Processing and Marketing of Healthy Fish Products in Inland Fisheries in Malawi (CultiAF). This project aims ... They will test different pre-drying methods: -no pre-drying treatment -parboiling -smoking -brining Solar dryer and business model testing Researchers will assess the solar dryers' economic performance.

  4. Consumer purchasing behavior towards fish and seafood products

    NARCIS (Netherlands)

    Carlucci, D.; Nocella, G.; Devitiis, De B.; Bimbo, F.; Nardone, G.

    2015-01-01

    The present systematic review was performed to assess consumer purchasing behaviour towards fish and seafood products in the wide context of developed countries. Web of Science, Scopus, ScienceDirect and Google Scholar engines were used to search the existing literature and a total of 49 studies

  5. [Performance evaluation of a fluorescamine-HPLC method for determination of histamine in fish and fish products].

    Science.gov (United States)

    Kikuchi, Hiroyuki; Tsutsumi, Tomoaki; Matsuda, Rieko

    2012-01-01

    A method for the quantification of histamine in fish and fish products using tandem solid-phase extraction and fluorescence derivatization with fluorescamine was previously developed. In this study, we improved this analytical method to develop an official test method for quantification of histamine in fish and fish products, and performed a single laboratory study to validate it. Recovery tests of histamine from fillet (Thunnus obesus), and two fish products (fish sauce and salted and dried whole big-eye sardine) that were spiked at the level of 25 and 50 µg/g for T. obesus, and 50 and 100 µg/g for the two fish products, were carried out. The recoveries of histamine from the three samples tested were 88.8-99.6% with good repeatability (1.3-2.1%) and reproducibility (2.1-4.7%). Therefore, this method is acceptable for the quantification of histamine in fish and fish products. Moreover, surveillance of histamine content in food on the market was conducted using this method, and high levels of histamine were detected in some fish products.

  6. 46 CFR 105.90-1 - Existing commercial fishing vessels dispensing petroleum products.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Existing commercial fishing vessels dispensing petroleum... AND MISCELLANEOUS VESSELS COMMERCIAL FISHING VESSELS DISPENSING PETROLEUM PRODUCTS Existing Commercial Fishing Vessels Dispensing Petroleum Products § 105.90-1 Existing commercial fishing vessels dispensing...

  7. Channel Islands, Kelp Forest Monitoring, Survey, Fish Transect, 1985-2007

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This dataset from the Channel Islands National Park's Kelp Forest Monitoring Program has measurements of the abundance of fish species. The original measurements...

  8. Utilisation of composted night soil in fish production

    Energy Technology Data Exchange (ETDEWEB)

    Polprasert, C.

    1984-01-01

    The stabilisation of human night soil mixed with water hyacinth (Eichhornia crassipes) and vegetable leaves by a simple composting method was found to be effective. This composting method did not require mechanical aeration or pile turning, but could retain most of the valuable nutrients and inactivate a large portion of micro-organisms present in the compost piles. A considerable yield of Tilapia could be obtained when the composted product was applied as feed to fish ponds. A discussion is included of the technical feasibility and the microbiological aspects of the integrated scheme of compost-fed fish ponds.

  9. Simulated recalls of fish products in five Nordic countries

    DEFF Research Database (Denmark)

    Randrup, Maria; Storøy, J.; Lievonen, S.

    2008-01-01

    Simulated recalls of fish products sampled in retailer shops were conducted in five Nordic countries to indicate the effectiveness and accuracy of chain traceability systems. The results suggested poor traceability practices at the vessels/auctions and revealed that batch sizes at the last...... traceable step of the raw material vary considerably. However, the existing traceable information seemed to be easily accessible. Altogether, the fish industry in the Nordic countries seems not to be fully prepared for a recall.. Improved traceability awareness and practices in the whole chain can limit...

  10. Integrated Monitoring System of Production Processes

    Directory of Open Access Journals (Sweden)

    Oborski Przemysław

    2016-12-01

    Full Text Available Integrated monitoring system for discrete manufacturing processes is presented in the paper. The multilayer hardware and software reference model was developed. Original research are an answer for industry needs of the integration of information flow in production process. Reference model corresponds with proposed data model based on multilayer data tree allowing to describe orders, products, processes and save monitoring data. Elaborated models were implemented in the integrated monitoring system demonstrator developed in the project. It was built on the base of multiagent technology to assure high flexibility and openness on applying intelligent algorithms for data processing. Currently on the base of achieved experience an application integrated monitoring system for real production system is developed. In the article the main problems of monitoring integration are presented, including specificity of discrete production, data processing and future application of Cyber-Physical-Systems. Development of manufacturing systems is based more and more on taking an advantage of applying intelligent solutions into machine and production process control and monitoring. Connection of technical systems, machine tools and manufacturing processes monitoring with advanced information processing seems to be one of the most important areas of near future development. It will play important role in efficient operation and competitiveness of the whole production system. It is also important area of applying in the future Cyber-Physical-Systems that can radically improve functionally of monitoring systems and reduce the cost of its implementation.

  11. SEABIOPLAS project Seaweed co-products as micro-additives in fish feed

    Directory of Open Access Journals (Sweden)

    Maria João Dias Peixoto

    2014-05-01

    The role of the CIIMAR team in the project is to study the use of seaweeds and their extracts in fish nutrition. Several variables, such as zootecnical parameters, metabolic and digestive enzymes, as well as stress and immune response parameters will be used as indicators of growth performance, fish health and welfare conditions. To do so, several feeding trials will be carried out under controlled rearing conditions, where biotic and abiotic factors will be used as stressors to determine the protective effects of seaweed supplementation in fish diets. Juvenile European seabass, Dicentrarchus labrax, will be used as the fish model, in a fast growing stage (IBW: 15-50 g. Each dietary treatment (control diet vs. experimental diets will be fed in triplicate groups for approximately 90 days, twice a day to apparent satiety. Fish will be individually marked with Passive Integrated Transponder (PIT tag prior to the beginning of the trials for monitoring individual fish performance. During the trials, samplings will be carried out at different times for determination the effects of treatment duration on the results. Growth performance will be determined by means of growth rate (% body weight/day; feed conversion ratio (FCR; voluntary fed intake (VFI, % body weight/day; protein efficiency ratio (PER; nutrient retention efficiency (%. To evaluate fish health and welfare condition, several stress biomarkers will be determine, such as glutathione-S-transferase (GST, catalase (CAT, superoxide dismutase (SOD, lipid peroxidation (LP, oxidized protein (POx; Acetylcholinesterase (AChE, and glutathione peroxidase (GPx. In addition, gross morphometric indices: such as the condition factor (K and hepato-somatic index (HSI will be calculated as auxiliary indicators of health status and liver condition of fish. For immune parameters, plasma for humoral analyses parameters will be used (peroxidase, lysozyme activity, alternative complement activity and superoxide anion production.

  12. THE NEED FOR DIVERSIFICATION IN FISH FARMING PRODUCTION

    Directory of Open Access Journals (Sweden)

    Krešimir Pažur

    1999-06-01

    Full Text Available One of the characteristics of developed economies in the world is a very rich and diversified offer of goods. There are many products of different assortment, of different quality and price on the market. In keeping with the marketing conception, the production is trying to satisfy all potential consumers. Croatian freshwater fish farming has not yet reached this stage. The assortment is very limited and includes mostly carp (up to 80%, Californian trout (up to 10%, grass carp (around 4%, wels, pike-perch and pike together up to 2.70%, while the rest are commercially insignificant and uninteresting fish species. In the last few years, an increasingly important type of consumers has emerged on the market sporting anglers whose importance is growing and bringing totally new, specific demands that the fish ponds at the moment cannot meet, except maybe in marginal quantities. There is a categorical imperative of a fast adjustment of the production assortment of our fishing farms to the tendencies in the nourishment of the population in developed countries that can also be observed in our country and to the demands and needs of sporting anglers.

  13. Improving production of Zebra Fish Embryos in the lab

    DEFF Research Database (Denmark)

    Thomsen, Jens Peter; Adu, Robert Ohene

    2011-01-01

    in the laboratory. Culture conditions were maintained in the aquaria as stipulated in the OECD draft proposal for a new guideline on fish embryo tests. Furthermore, a sequence of steps were adopted and followed to improve upon previous work done in the lab in 2006. About 200 eggs were produced in one spawn trap......The utilization of fish embryos in toxicity testing of hazardous chemicals has recently been adopted in order to satisfy stricter rules and regulations related to using adult animals in toxicity testing. This paper presents optimising steps towards improving zebra fish embryo production...... within an hour of onset of light, an improvement over the 50-60 eggs produced in the previous work. This result demonstrates that with the right culture conditions and proper optimisation of procedure the required number of embryos needed for toxicity testing can be obtained....

  14. Chemical products toxicological tests performed on lake and river fish

    International Nuclear Information System (INIS)

    Teulon, F.; Simeon, C.

    1966-01-01

    The volume and toxical values of industrial and urban effluents are growing higher and therefore acute or chronic pollution hazard is proportionally increased. Hence it is necessary to determine the effluent components minimum lethal dose for fish (one hour or six hours according to applicable standards). The following tests are described in this report: toxicity of some chemical products, tested individually (sodium, sulphate, sodium chloride, sodium fluoride, etc...); toxicity of some metal ions (Al 3+ , Fe ++ , Fe 3+ , Pb ++ , etc...); toxicity of certain mixed compounds for various fish species (sun perch, tench, gold fish, roach, gudgeon, bleak). The test results obtained represent local values and may be used for reference and as a general basis for other investigation and calculation of the effluents data when released. (author) [fr

  15. Operational Monitoring of Data Production at KNMI

    Science.gov (United States)

    van de Vegte, John; Kwidama, Anecita; van Moosel, Wim; Oosterhof, Rijk; de Wit de Wit, Ronny; Klein Ikkink, Henk Jan; Som de Cerff, Wim; Verhoef, Hans; Koutek, Michal; Duin, Frank; van der Neut, Ian; verhagen, Robert; Wollerich, Rene

    2016-04-01

    Within KNMI a new fully automated system for monitoring the KNMI operational data production systems is being developed: PRISMA (PRocessflow Infrastructure Surveillance and Monitoring Application). Currently the KNMI operational (24/7) production systems consist of over 60 applications, running on different hardware systems and platforms. They are interlinked for the production of numerous data products, which are delivered to internal and external customers. Traditionally these applications are individually monitored by different applications or not at all; complicating root cause and impact analysis. Also, the underlying hardware and network is monitored via an isolated application. Goal of the PRISMA system is to enable production chain monitoring, which enables root cause analysis (what is the root cause of the disruption) and impact analysis (what downstream products/customers will be effected). The PRISMA system will make it possible to reduce existing monitoring applications and provides one interface for monitoring the data production. For modeling and storing the state of the production chains a graph database is used. The model is automatically updated by the applications and systems which are to be monitored. The graph models enables root cause and impact analysis. In the PRISMA web interface interaction with the graph model is accomplished via a graphical representation. The presentation will focus on aspects of: • Modeling real world computers, applications, products to a conceptual model; • Architecture of the system; • Configuration information and (real world) event handling of the to be monitored objects; • Implementation rules for root cause and impact analysis. • How PRISMA was developed (methodology, facts, results) • Presentation of the PRISMA system as it now looks and works

  16. FISH PRODUCTION ESTIMATES FOR GBEDIKERE LAKE, BASSA, KOGI STATE, NIGERIA

    Directory of Open Access Journals (Sweden)

    Samuel Olusegun Adeyemi

    2013-10-01

    Full Text Available Annual estimates of the fish caught by local fishermen in randomly selected fishing villages adjacent to Gbedikere Lake were determined using Catch Assessment (CAS. The studies were carried out within two seasons of low water (February and high water (September periods between 2006 to 2008. Annual fish catch varied from 537.4 mts to 576.9 mts at high water. Mean catch per boat ranged from 7.40 kg to 10.60 kg among the landing sites. A total of 12 fish species were identified belonging to ten families. The catches were dominated by the cichlids with Orechromis niloticus dominating the overall catch compositions. Production estimate was compared with the catches obtained through experimental gill-net sampling and potential fish yield estimates using Ryder’s Morpho - Edaphic Index (MEI as modified by Henderson and Welcomme (1974. Contributions of the gears in use were also done with cast nets ranking above others (29%, followed by the set net (25%, hook and lines (16.6%, traps (16.6%, clap net (8.3%. Management measures were suggested.

  17. Occurrence of bioactive sphingolipids in meat and fish products

    DEFF Research Database (Denmark)

    Hellgren, Lars

    2001-01-01

    /neutral glycolipids varied from 1 to 2.9, while in poultry this ratio varied between 5.2 to 19.2 and in red meat it varied from 1.6 to 8.3. The fatty acid composition of sphingomyelin in fish was dominated by C24:1 (Delta (9)) or C22:1 (Delta (9)), while C16:0 and C18:0 were the dominating sphingomyelin species....... Therefore we investigated the contents of sphingomyelin and neutral glycosphingolipids in commonly consumed meat and fish products. Sphingomyelin and glycosphingolipids were found in all foodstuffs studied. The total amount varied between 118 +/- 17 nmol/g (cod) to 589 +/- 39 nmol/g (chicken leg). Generally......, lower amounts of sphingolipids were determined in fish meat than in red meat and poultry, while poultry was the richest source of this class of lipids. However, fish meat contained a relatively high content of neutral glycolipids compared with other types of meat. Thus, in fish the ratio sphingomyelin...

  18. St. John, USVI Fish Assessment and Monitoring Data (2002 - Present)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This fish and benthic composition database is the result of a multifaceted effort described below.The intent of this work is five fold: 1) To spatially characterize...

  19. St. Croix, USVI Fish Assessment and Monitoring Data (2002 - Present)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This fish and benthic composition database is the result of a multifaceted effort described below. The intent of this work is five fold: 1) To spatially characterize...

  20. REQUIREMENTS ON CLINICAL TRIALS FOR VETERINARY PHARMACEUTICAL PRODUCTS FOR FISH

    Directory of Open Access Journals (Sweden)

    Simona Sturzu

    2016-12-01

    Full Text Available Veterinary pharmaceutical products intended for use in fish should comply with all usual requirements regarding approval for marketing, according to the Order of the President of the National Sanitary Veterinary Agency and for Food Safety No.187/2007, with subsequent amendments and additions. According to the legislation the technical file should containe documentation of quality, safety of animals, consumer, user and environment and demonstration of efficacy and tolerance in the target species. This paper provides the important information on requirements for demonstration on efficacy of pharmaceutical products indended for use in fish. The principal aim of the efficacy data is to prove the therapeutic value of pharmaceutical products and to establish an optimal dose and period of dose administration. In efficacity clinical trial is needed, also, to take into account, the various conditions such as climatic aspects, disease situation, water temperature and salinity, because these may influence the outcome and veracity of the studies.

  1. Development of a ready to eat fish based product using seafood industry byproducts: FisHam

    Directory of Open Access Journals (Sweden)

    Luís Raimundo

    2014-05-01

    Full Text Available Over the last years, there has been an increased demand from consumers for safe, nutritionally balanced and convenient food products. These trends are contributing towards an increasing demand for fishery products which affects fishery resources worldwide, compromising stocks of many fish species. The technological enhancement of the byproducts of fish industries or fish species of low commercial value, transforming these materials in products with high nutritional potential will simultaneously contribute towards fulfill present consumer trends and to a more sustainable marine resources management. The present work develops the product concept and prototype formulation of a ready to eat omega 3 enriched product using raw material trimmings of fish of low commercial value. The product developed, FisHam is a ham-like refrigerated product, which can be slice and added to sandwiches or diced and added to salads. Product concept was validated with a questionnaire, in which it was obtained a positive global acceptance by 86% of the inquired people. Sensory analysis of the product revealed its good acceptability, with an average global appreciation of “enjoyed moderately” and with 58% of the pannel stating the intention of buying the product. Fish oil addition had no impact on sensory acceptance. Regarding the physicochemical analysis, the selected formulation showed a content of protein of 7,08%, low lipid content of 3,74%, medium content of humidity of 61% and low caloric value of 164 calories per 100 grams. The color, textural attributes, humidity content and microbiological parameters were monitored during 10 days of refrigerated storage at 5ºC. On the microbiological level, the product showed the absence of enterobacteries and psychrotrophics in compliance with legal microbiological criteria set for ready to eat products. It can be concluded that this new product can be considered an alternative product to meat ham and other meat products in

  2. In vitro organic matter digestibility and gas production of fish-meal ...

    African Journals Online (AJOL)

    user

    2011-03-28

    Mar 28, 2011 ... In this study, an in vitro rumen gas production technique was utilized to evaluate fish-meal coated with ... Keywords: fish-meal; gas production; hydrogenated tallow; .... industrial city, Saveh, Iran). ..... commercial dairy rations.

  3. Fish burger enriched by olive oil industrial by-product.

    Science.gov (United States)

    Cedola, Annamaria; Cardinali, Angela; Del Nobile, Matteo Alessandro; Conte, Amalia

    2017-07-01

    Oil industry produces large volume of waste, which represents a disposal and a potential environmental pollution problem. Nevertheless, they are also promising sources of compounds that can be recovered and used as valuable substances. The aim of this work is to exploit solid olive by-products, in particular dry olive paste flour (DOPF) coming from Coratina cultivar, to enrich fish burger and enhance the quality characteristics. In particular, the addition of olive by-products leads to an increase of the phenolic content and the antioxidant activity; however, it also provokes a deterioration of sensory quality. Therefore, to balance quality and sensory characteristics of fish burgers, three subsequent phases have been carried out: first, the quality of DOPF in terms of phenolic compounds content and antioxidant activity has been assessed; afterward, DOPF has been properly added to fish burgers and, finally, the formulation of the enriched fish burgers has been optimized in order to improve the sensory quality. Results suggested that the enriched burgers with 10% DOPF showed considerable amounts of polyphenols and antioxidant activity, even though they are not very acceptable from the sensory point of view. Pre-treating DOPF by hydration/extraction with milk, significantly improved the burger sensory quality by reducing the concentration of bitter components.

  4. Fish production practices and use of aquaculture technologies ...

    African Journals Online (AJOL)

    The study investigated types of improved aquaculture technologies used by the ... fish farmers culture fish in earthen ponds, for commercial and home consumption ... fishes/m2 (98.3%), water quality management (99.1%) and fish ...

  5. Idaho Habitat/Natural Production Monitoring, Pt. I: General Monitoring Subproject : Annual Progress Report 1990.

    Energy Technology Data Exchange (ETDEWEB)

    Rich, Bruce A.; Scully, Richard J.; Petrosky, Charles Edward

    1992-01-01

    The Idaho Department of Fish and Game (IDFG) has been monitoring and evaluating proposed and existing habitat improvement projects for rainbow-steelhead trout Oncorhynchus mykiss, hereafter called steelhead, and chinook salmon O. tshawytscha, hereafter called chinook, in the Clearwater and Salmon River drainages for the past seven years. Projects included in the evaluation are funded by, or proposed for funding by, the Bonneville Power Administration (BPA) under the Northwest Power Planning Act as off-site mitigation for downstream hydropower development on the Snake and Columbia rivers. This evaluation project is also funded under the same authority (Fish and Wildlife Program, Northwest Power Planning Council). A mitigation record is being developed using increased carrying capacity and/or survival as the best measure of benefit from a habitat enhancement project. Determination of full benefit from a project depends on completion or maturation of the project and presence of adequate numbers of fish to document actual increases in fish production. The depressed status of upriver anadromous stocks has precluded measuring full benefits of any habitat project in Idaho. Partial benefit is credited to the mitigation record in the interim period of run restoration.

  6. 46 CFR 105.05-1 - Commercial fishing vessels dispensing petroleum products.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Commercial fishing vessels dispensing petroleum products... MISCELLANEOUS VESSELS COMMERCIAL FISHING VESSELS DISPENSING PETROLEUM PRODUCTS Application § 105.05-1 Commercial fishing vessels dispensing petroleum products. (a) The provisions of this part, with the exception of...

  7. Histamine poisoning and control measures in fish and fishery products

    Directory of Open Access Journals (Sweden)

    Pierina eVisciano

    2014-09-01

    Full Text Available Histamine poisoning is one of the most common form of intoxication caused by the ingestion of fish and fishery products. Cooking, canning or freezing cannot reduce the levels of histamine because this compound is heat stable. All humans are susceptible to histamine and its effects can be described as intolerance or intoxication depending on the severity of the symptoms. The amount of histamine in food, the individual sensitivity and the detoxification activity in human organism represent the main factors affecting the toxicological response in consumers. Histamine is the only biogenic amine with regulatory limits set by European Legislation, up to a maximum of 200 mg/kg in fresh fish and 400 mg/kg in fishery products treated by enzyme maturation in brine.

  8. Conservation and management applications of the REEF volunteer fish monitoring program.

    Science.gov (United States)

    Pattengill-Semmens, Christy V; Semmens, Brice X

    2003-01-01

    The REEF Fish Survey Project is a volunteer fish monitoring program developed by the Reef Environmental Education Foundation (REEF). REEF volunteers collect fish distribution and abundance data using a standardized visual method during regular diving and snorkeling activities. Survey data are recorded on preprinted data sheets that are returned to REEF and optically digitized. Data are housed in a publicly accessible database on REEF's Web site (http://www.reef.org). Since the project's inception in 1993, over 40,000 surveys have been conducted in the coastal waters of North America, tropical western Atlantic, Gulf of California and Hawaii. The Fish Survey Project has been incorporated into existing monitoring programs through partnerships with government agencies, scientists, conservation organizations, and private institutions. REEF's partners benefit from the educational value and increased stewardship resulting from volunteer data collection. Applications of the data include an evaluation of fish/habitat interactions in the Florida Keys National Marine Sanctuary, the development of a multi-species trend analysis method to identify sites of management concern, assessment of the current distribution of species, status reports on fish assemblages of marine parks, and the evaluation of no-take zones in the Florida Keys. REEF's collaboration with a variety of partners, combined with the Fish Survey Project's standardized census method and database management system, has resulted in a successful citizen science monitoring program.

  9. Fish production and climate: Sprat in the Baltic Sea

    DEFF Research Database (Denmark)

    MacKenzie, Brian; Köster, Fritz

    2004-01-01

    Processes controlling the production of new fish (recruitment) are poorly understood and therefore challenge population ecologists and resource managers. Sprat in the Baltic Sea is no exception: recruitment varies widely between years and is virtually independent of the biomass of mature sprat......-scale climate variability (North Atlantic Oscillation), Baltic Sea ice coverage, and water temperature. These relationships increase our understanding of sprat population dynamics and enable a desirable integration of fisheries ecology and management with climatology and oceanography....

  10. Long-term fish monitoring in large rivers: Utility of “benchmarking” across basins

    Science.gov (United States)

    Ward, David L.; Casper, Andrew F.; Counihan, Timothy D.; Bayer, Jennifer M.; Waite, Ian R.; Kosovich, John J.; Chapman, Colin; Irwin, Elise R.; Sauer, Jennifer S.; Ickes, Brian; McKerrow, Alexa

    2017-01-01

    In business, benchmarking is a widely used practice of comparing your own business processes to those of other comparable companies and incorporating identified best practices to improve performance. Biologists and resource managers designing and conducting monitoring programs for fish in large river systems tend to focus on single river basins or segments of large rivers, missing opportunities to learn from those conducting fish monitoring in other rivers. We briefly examine five long-term fish monitoring programs in large rivers in the United States (Colorado, Columbia, Mississippi, Illinois, and Tallapoosa rivers) and identify opportunities for learning across programs by detailing best monitoring practices and why these practices were chosen. Although monitoring objectives, methods, and program maturity differ between each river system, examples from these five case studies illustrate the important role that long-term monitoring programs play in interpreting temporal and spatial shifts in fish populations for both established objectives and newly emerging questions. We suggest that deliberate efforts to develop a broader collaborative network through benchmarking will facilitate sharing of ideas and development of more effective monitoring programs.

  11. Monitoring pathogens from irradiated agriculture products

    International Nuclear Information System (INIS)

    Butterweck, J.S.

    1990-01-01

    The final food and environmental safety assessment of agriculture product irradiation can only be determined by product history. Product history will be used for future research and development, regulations, commercial practices and implementation of agriculture and food irradiation on a regional basis. The commercial irradiator treats large varieties and amounts of products that are used in various environments. it, in time, will generate a large data base of product history. Field product monitoring begins when food irradiation progresses from the pilot/demonstration phase to the commercial phase. At that time, it is important that there be in place a monitoring system to collect and analyze field data. The systems managers, public health authorities and exotic disease specialists will use this information to assess the reduction of food pathogens on the populace and the environment. (author)

  12. Idaho Habitat/Natural Production Monitoring Part I, 1995 Annual Report.

    Energy Technology Data Exchange (ETDEWEB)

    Hall-Griswold, J.A.; Petrosky, C.E. (Idaho Department of Fish and Game, Boise, ID)

    1996-12-01

    The Idaho Department of Fish and Game (IDFG) has been monitoring trends in juvenile spring and summer chinook salmon, Oncorhynchus tshawytscha, and steelhead trout, O. mykiss, populations in the Salmon, Clearwater, and lower Snake River drainages for the past 12 years. This work is the result of a program to protect, mitigate, and enhance fish and wildlife affected by the development and operation of hydroelectric power plants on the Columbia River. Project 91-73, Idaho Natural Production Monitoring, consists of two subprojects: General Monitoring and Intensive Monitoring. This report updates and summarizes data through 1995 for the General Parr Monitoring (GPM) database to document status and trends of classes of wild and natural chinook salmon and steelhead trout populations. A total of 281 stream sections were sampled in 1995 to monitor trends in spring and summer chinook salmon Oncorhynchus tshawytscha and steelhead trout O. mykiss parr populations in Idaho. Percent carrying capacity and density estimates were summarized for 1985--1995 by different classes of fish: wild A-run steelhead trout, wild B-run steelhead trout, natural A-run steelhead trout, natural B-run steelhead trout, wild spring and summer chinook salmon, and natural spring and summer chinook salmon. The 1995 data were also summarized by subbasins as defined in Idaho Department of Fish and Game`s 1992--1996 Anadromous Fish Management Plan.

  13. Idaho habitat/natural production monitoring: Part 1. Annual report 1995

    International Nuclear Information System (INIS)

    Hall-Griswold, J.A.; Petrosky, C.E.

    1996-11-01

    The Idaho Department of Fish and Game (IDFG) has been monitoring trends in juvenile spring and summer chinook salmon, Oncorhynchus tshawytscha, and steelhead trout, O. mykiss, populations in the Salmon, Clearwater, and lower Snake River drainages for the past 12 years. This work is the result of a program to protect, mitigate, and enhance fish and wildlife affected by the development and operation of hydroelectric power plants on the Columbia River. Project 91-73, Idaho Natural Production Monitoring, consists of two subprojects: General Monitoring and Intensive Monitoring. This report updates and summarizes data through 1995 for the General Parr Monitoring (GPM) database to document status and trends of classes of wild and natural chinook salmon and steelhead trout populations. A total of 281 stream sections were sampled in 1995 to monitor trends in spring and summer chinook salmon Oncorhynchus tshawytscha and steelhead trout O. mykiss parr populations in Idaho. Percent carrying capacity and density estimates were summarized for 1985--1995 by different classes of fish: wild A-run steelhead trout, wild B-run steelhead trout, natural A-run steelhead trout, natural B-run steelhead trout, wild spring and summer chinook salmon, and natural spring and summer chinook salmon. The 1995 data were also summarized by subbasins as defined in Idaho Department of Fish and Game's 1992--1996 Anadromous Fish Management Plan

  14. The buying behaviour of European retail buyers of fish products

    DEFF Research Database (Denmark)

    Bove, Karsten

    Empirical studies of retailer buying behaviour show which attributes are important when retail buyers choose between new products and suppliers. Skytte & Blunch (1998) identified which attributes make a difference to retail buyers in Western Europe when buying fish products, and they identified...... the following five segments of retail buyer policy based on the results: 1) 'Relationship builders' are small chains that focus on long term relationships. 2) 'The traditional chains' are small or medium-sized and include many co-operative chains that demand high product quality. They also want suppliers...... that are able to deliver sufficient quantities. 3) Voluntary chains are dominating the 'large chains' segment. They have a high share of private label products and want long term relationships with suppliers and sufficient quantities. 4) 'Green shops' include many small wholesalers sponsored chains and co...

  15. Monitoring product safety in the postmarketing environment.

    Science.gov (United States)

    Sharrar, Robert G; Dieck, Gretchen S

    2013-10-01

    The safety profile of a medicinal product may change in the postmarketing environment. Safety issues not identified in clinical development may be seen and need to be evaluated. Methods of evaluating spontaneous adverse experience reports and identifying new safety risks include a review of individual reports, a review of a frequency distribution of a list of the adverse experiences, the development and analysis of a case series, and various ways of examining the database for signals of disproportionality, which may suggest a possible association. Regulatory agencies monitor product safety through a variety of mechanisms including signal detection of the adverse experience safety reports in databases and by requiring and monitoring risk management plans, periodic safety update reports and postauthorization safety studies. The United States Food and Drug Administration is working with public, academic and private entities to develop methods for using large electronic databases to actively monitor product safety. Important identified risks will have to be evaluated through observational studies and registries.

  16. Homestead fish farmers' production profile in Osun state, Nigeria ...

    African Journals Online (AJOL)

    Homestead fish farming in the Nigeria is carried out by small scale operators in small fresh water ponds. ... fish farmers in Osun state is also characterized by a high level of use of improved fish farming techniques and improved technologies.

  17. Monitoring of Monthly Price Changes of Cultured Fishes in Sinop Province Between 2012 and 2013

    Directory of Open Access Journals (Sweden)

    Birol Baki

    2017-09-01

    Full Text Available The aim of this study was to determine the monthly price changes of cultured fish which were offered for sale in retail fish outlets in Sinop, Turkey. The fish enterprises were determined by stratified sampling method. The enterprises were grouped as I (the most, II (moderate and III (the least according to the amount of their sales. Each group was represented by two different fish enterprises. During the study, prices of the same fish species were obtained twice a month at the same time of the day and the data were calculated as average ± SD. The differences between the groups were determined by one-way variance analysis (ANOVA and the price relation level between species was evaluated by the correlation analysis using IBM SPSS 21 Statisticssoftware. It was determined that sea bream (Sparus aurata, sea bass (Dicentrarhus labrax, rainbow trout (Oncorhyncus mykiss (portion size and kilos and salmon (Salmo salar (import were offered for sale in fish markets as cultured fish species. These species were sold during the fishing ban period (April-August. They were also sold starting from September when the fishing ban period ended up and the fishery products were at their lowest. For all the species, the differences between the pricesice were not significant between the sampled enterprises. The average values of the current prices were higher than that of 2008-2013 period. A negative strong relation was determined between the rainbow trout and the salmon.

  18. Implications of using alternative methods of vessel monitoring system (VMS) data analysis to describe fishing activities and impacts

    NARCIS (Netherlands)

    Lambert, G.I.; Jennings, S.; Hiddink, J.G.; Hintzen, N.T.; Hinz, H.; Kaiser, M.J.; Murray, L.G.

    2012-01-01

    Understanding the spatial distribution and intensity of fishing activity is a prerequisite for estimating fishing impacts on seabed biota and habitats. Vessel monitoring system data provide information on fishing activity at large spatial scales. However, successive position records can be too

  19. OCCURANCE OF HISTAMINE IN FISH PRODUCTS ON MARKET

    Directory of Open Access Journals (Sweden)

    R. Mancusi

    2012-08-01

    Full Text Available Histamine fish poisoning is quite common and occur in consequence of microbial decarboxylase whose activity begin early in the post-mortem but are triggered in consequence of abuse in the shelf life of fish products. In this study forty-eight samples of tuna, mackerel, anchovies, sardines, fresh or processed were sampled from fish shops and supermarkets in the City of Bologna in the period from January to July 2010. Concentration of histamine was assessed using ELISA quantitative test and presence of psicrotrophic histamine forming bacteria was searched using a modified Niven agar medium which allow detection of suspect colonies that were confirmed by PCR for detecting the presence of the histidine decarboxylase genes in their DNA. The positive colonies were then identified on the basis of their morphology, Gram reaction and biochemical characteristics with API20E. The differential capability of the Niven agar was found to be low and approximately one fifth of the suspect colonies were confirmed by the PCR test, which however included both strong and weak histamine producing strains. The presence of Morganella morganii was associated with concentration of histamine 460 mg∙kg-1 above the allowed limit in a sample of tuna sampled from a fish shop. The same bacterium was found in samples of Atlantic horse mackerel (Trachurus trachurus. High histamine concentration (between 258 and > 300 mg∙kg-1 were observed in salted European pilchard and European anchovy (228 mg∙kg-1 sold loose in supermarkets. Because temperature abuse could occur when Tuna (fresh/defrozen are hold on chopping board to sell fresh cuts and during shelf life of salted pilchard and pickled anchovies held in opened cans in chilled display cabinets for extended period, which might results in very high histamine concentration, controls on time and temperature at the retail, in addition to those done during the harvest and processing are needed. The studies aiming at

  20. Potential consequences of climate change for primary production and fish production in large marine ecosystems.

    Science.gov (United States)

    Blanchard, Julia L; Jennings, Simon; Holmes, Robert; Harle, James; Merino, Gorka; Allen, J Icarus; Holt, Jason; Dulvy, Nicholas K; Barange, Manuel

    2012-11-05

    Existing methods to predict the effects of climate change on the biomass and production of marine communities are predicated on modelling the interactions and dynamics of individual species, a very challenging approach when interactions and distributions are changing and little is known about the ecological mechanisms driving the responses of many species. An informative parallel approach is to develop size-based methods. These capture the properties of food webs that describe energy flux and production at a particular size, independent of species' ecology. We couple a physical-biogeochemical model with a dynamic, size-based food web model to predict the future effects of climate change on fish biomass and production in 11 large regional shelf seas, with and without fishing effects. Changes in potential fish production are shown to most strongly mirror changes in phytoplankton production. We project declines of 30-60% in potential fish production across some important areas of tropical shelf and upwelling seas, most notably in the eastern Indo-Pacific, the northern Humboldt and the North Canary Current. Conversely, in some areas of the high latitude shelf seas, the production of pelagic predators was projected to increase by 28-89%.

  1. Radiation preservation of fish and by-products

    Energy Technology Data Exchange (ETDEWEB)

    Vas, K

    1974-07-01

    The desirability of making the irradiation of fish and fishery products the subject of common experiments in the South and South East Asian and Far East region was based on studies carried out in various laboratories in the region, as well as the findings of a Technical Assistance Mission to the area in 1971/72, and an FAO/IAEA Study Group Meeting on Food Irradiation in Bangkok (1971). As a result, fish preservation by irradiation was among the first topics suggested for collaborative studies under the IAEA-sponsored Regional Agreement for Research, Development and Training Related to Nuclear Science and Technology (RCA), which became operational in June 1972. Following an FAO/IAEA Panel meeting on Aspects of the Introduction of Food Irradiation in Developing Countries at Bombay, in November 1972, it was suggested that collaborative fish irradiation studies be initiated as the first regional project under the RCA. A meeting of scientists authorized to represent the Governments willing to participate in the venture, was recommended. This plan was accepted by an informal meeting of Government Representatives on the future of the RCA held during the 17th Session of the General Conference of the IAEA in Vienna in 1973. The offer of the Philippine Government to host the initiating meeting was accepted, and the Working Group to launch the Asian Regional Project on Radiation Preservation of Fish and Fishery Products (RPF) met in November 1973 in Manila. This meeting was attended by representatives of Bangladesh, India, Indonesia, Korea, Pakistan, the Philippines, Singapore and Thailand. The Federal Republic of Germany and Japan sent observers who also served as consultants and greatly contributed to the scientific deliberations. The Working Group accepted a Project Agreement draft which foresees regional co-ordination of the scientific programme by common planning, distribution of labour and reporting at annual co-ordination meetings. To achieve these goals, the

  2. Radiation preservation of fish and by-products

    International Nuclear Information System (INIS)

    Vas, K.

    1974-01-01

    The desirability of making the irradiation of fish and fishery products the subject of common experiments in the South and South East Asian and Far East region was based on studies carried out in various laboratories in the region, as well as the findings of a Technical Assistance Mission to the area in 1971/72, and an FAO/IAEA Study Group Meeting on Food Irradiation in Bangkok (1971). As a result, fish preservation by irradiation was among the first topics suggested for collaborative studies under the IAEA-sponsored Regional Agreement for Research, Development and Training Related to Nuclear Science and Technology (RCA), which became operational in June 1972. Following an FAO/IAEA Panel meeting on Aspects of the Introduction of Food Irradiation in Developing Countries at Bombay, in November 1972, it was suggested that collaborative fish irradiation studies be initiated as the first regional project under the RCA. A meeting of scientists authorized to represent the Governments willing to participate in the venture, was recommended. This plan was accepted by an informal meeting of Government Representatives on the future of the RCA held during the 17th Session of the General Conference of the IAEA in Vienna in 1973. The offer of the Philippine Government to host the initiating meeting was accepted, and the Working Group to launch the Asian Regional Project on Radiation Preservation of Fish and Fishery Products (RPF) met in November 1973 in Manila. This meeting was attended by representatives of Bangladesh, India, Indonesia, Korea, Pakistan, the Philippines, Singapore and Thailand. The Federal Republic of Germany and Japan sent observers who also served as consultants and greatly contributed to the scientific deliberations. The Working Group accepted a Project Agreement draft which foresees regional co-ordination of the scientific programme by common planning, distribution of labour and reporting at annual co-ordination meetings. To achieve these goals, the

  3. Complex and rational use fish raw material at production of the fish products

    OpenAIRE

    Saltanova, N.; Saltanov, D.

    2011-01-01

    There was developed resource saving technology of herring preserves, which allows to rationally use raw, to cut lasting of the technological process, to lower the production costs and rise the economical effectiveness of production. There were defined the optimal conditions of getting broths of herring wastes. There were developed the recipes of fills at the base of broth from collagen-containing wastes of herring with the addition of vegetable raw.

  4. Biodiesel production using oil from fish canning industry wastes

    International Nuclear Information System (INIS)

    Costa, J.F.; Almeida, M.F.; Alvim-Ferraz, M.C.M.; Dias, J.M.

    2013-01-01

    Highlights: • A process was established to produce biodiesel from fish canning industry wastes. • Biodiesel production was enabled by an acid esterification pre-treatment. • Optimization studies showed that the best catalyst concentration was 1 wt.% H 2 SO 4 . • There was no advantage when a two-step alkali transesterification was employed. • Waste oil from olive oil bagasse could be used to improve fuel quality. - Abstract: The present study evaluated biodiesel production using oil extracted from fish canning industry wastes, focusing on pre-treatment and reaction conditions. Experimental planning was conducted to evaluate the influence of acid catalyst concentration (1–3 wt.% H 2 SO 4 ) in the esterification pre-treatment and the amount of methanolic solution (60–90 vol.%) used at the beginning of the further two-step alkali transesterification reaction. The use of a raw-material mixture, including waste oil obtained from olive oil bagasse, was also studied. The results from experimental planning showed that catalyst concentration mostly influenced product yield and quality, the best conditions being 1 wt.% catalyst and 60 vol.% of methanolic solution, to obtain a product yield of 73.9 wt.% and a product purity of 75.5 wt.%. Results from a one-step reaction under the selected conditions showed no advantage of performing a two-step alkali process. Although under the best conditions several of the biodiesel quality parameters were in agreement with standard specifications, a great variation was found in the biodiesel acid value, and oxidation stability and methyl ester content did not comply with biodiesel quality standards. Aiming to improve fuel quality, a mixture containing 80% waste olive oil and 20% of waste fish oil was evaluated. Using such mixture, biodiesel purity increased around 15%, being close to the standard requirements (96.5 wt.%), and the oxidation stability was in agreement with the biodiesel quality standard values (⩾6 h), which

  5. Toward fish and seafood traceability: anchovy species determination in fish products by molecular markers and support through a public domain database.

    Science.gov (United States)

    Jérôme, Marc; Martinsohn, Jann Thorsten; Ortega, Delphine; Carreau, Philippe; Verrez-Bagnis, Véronique; Mouchel, Olivier

    2008-05-28

    Traceability in the fish food sector plays an increasingly important role for consumer protection and confidence building. This is reflected by the introduction of legislation and rules covering traceability on national and international levels. Although traceability through labeling is well established and supported by respective regulations, monitoring and enforcement of these rules are still hampered by the lack of efficient diagnostic tools. We describe protocols using a direct sequencing method based on 212-274-bp diagnostic sequences derived from species-specific mitochondria DNA cytochrome b, 16S rRNA, and cytochrome oxidase subunit I sequences which can efficiently be applied to unambiguously determine even closely related fish species in processed food products labeled "anchovy". Traceability of anchovy-labeled products is supported by the public online database AnchovyID ( http://anchovyid.jrc.ec.europa.eu), which provided data obtained during our study and tools for analytical purposes.

  6. Development of protocols to inventory or monitor wildlife, fish, or rare plants

    Science.gov (United States)

    David Vesely; Brenda C. McComb; Christina D. Vojta; Lowell H. Suring; Jurai Halaj; Richard S. Holthausen; Benjamin Zuckerberg; Patricia M. Manley

    2006-01-01

    The purpose of this technical guide (hereafter referred to as the Species Protocol Technical Guide) is to provide guidelines for developing inventory and monitoring (I&M) protocols for wildlife, fish, and rare plants (WFRP) using the U.S. Department of Agriculture (USDA) Forest Service technical guide format.

  7. Micro -algae biomass as an alternative resource for fishmeal and fish oil in the production of fish feed

    DEFF Research Database (Denmark)

    Safafar, Hamed

    evident that the continued exploitation of industrial fish as a resource fish feed will ultimately become both environmentally and economically unsustainable. Microalgae are at the base of the entire aquatic food chain and play a major role in the diet of aquatic animals such as fish. Microalgae’s main...... application for aquaculture are related to nutrition, being used as a sole fresh feed or an additive, e.g. source of pigment. Algae produce almost all nutritious compounds which are required for fish. The diverse biochemical composition of microalgae represents them as a promising candidate...... for the formulation of fish feed. The nutritional composition of microalgae depends on the species, environmental conditions and growth medium composition. Microalgae for use in aquaculture should be non-toxic and possess the essential nutritive constituents, in a reasonable price. Photosynthetic production of algae...

  8. Biota monitoring under the Water Framework Directive: On tissue choice and fish species selection.

    Science.gov (United States)

    Fliedner, Annette; Rüdel, Heinz; Lohmann, Nina; Buchmeier, Georgia; Koschorreck, Jan

    2018-04-01

    The study addresses the topic of suitable matrices for chemical analysis in fish monitoring and discusses the effects of data normalization in the context of the European Water Framework Directive (WFD). Differences between species are considered by comparing three frequently monitored species of different trophic levels, i.e., chub (Squalius cephalus, n = 28), (bream, Abramis brama, n = 11), and perch (Perca fluviatilis, n = 19) sampled in the German Danube. The WFD priority substances dioxins, furans and dioxin-like polychlorinated biphenyls (PCDD/F + dl-PCB), polybrominated diphenyl ethers (PBDE), α-hexabromocyclododecane (α-HBCDD), hexachlorobenzene (HCB), mercury (Hg), and perfluorooctane sulfonic acid (PFOS) as well as non-dioxin-like (ndl)-PCB were analyzed separately in fillet and carcass and whole body concentrations were calculated. Hg was analyzed in individual fish fillets and carcasses, all other substances were determined in pool samples, which were compiled on the basis of fish size (3 chub pools, 1 bream pool, 2 perch pools). The data were normalized to 5% lipid weight (or 26% dry mass in the case of Hg and PFOS) for comparison between matrices and species. Hg concentrations were generally higher in fillet than in whole fish (mean whole fish-to-fillet ratio: 0.7) whereas all other substances were mostly higher in whole fish. In the case of lipophilic substances these differences leveled after lipid normalization. Significant correlations (p ≤ .05) were detected between Hg and fish weight and age. Hg concentrations varied least among younger fish. PCDD/F, dl-PCB, ndl-PCB, PBDE, α-HBCDD and HCB correlated significantly (p ≤ .05) with lipid concentrations. Fillet-to-whole fish conversion equations and/or conversion factors were derived for all substances except α-HCBDD. Although more data also for individual fish would be desirable the results are nevertheless a step on the way to translate fillet concentrations of priority

  9. Concentrations of elements in fish fillets, fish muscle plugs, and crayfish from the 2007 Missouri Department of Conservation General Contaminant Monitoring Program

    Science.gov (United States)

    May, Thomas W.; Walther, Michael J.; Brumbaugh, William G.; McKee, Michael J.

    2009-01-01

    This report presents the results of a contaminant monitoring survey conducted annually by the Missouri Department of Conservation to examine the levels of selected elemental contaminants in fish fillets, fish muscle plugs, and crayfish. Fillets of channel catfish (Ictalurus punctatus), bass (Micropterus salmoides, Micropterus dolomieu, Morone chrysops), walleye (Sander vitreus), common carp (Cyprinus carpio), lake sturgeon (Acipenser fulvescens), northern hog sucker (Hypentelium nigricans), and rainbow trout (Oncorhynchus mykiss) were collected from 21 sites as part of the Department's Fish Contaminant Monitoring Program. Long-pincered crayfish (Orconectes longidigitus) were collected from one site to assess trophic transfer of metals to fish. Fish muscle plugs were collected from smallmouth bass (Micropterus dolomieu) at two different locations from one site.

  10. Chemical properties and colors of fermenting materials in salmon fish sauce production

    Directory of Open Access Journals (Sweden)

    Mitsutoshi Nakano

    2018-02-01

    Full Text Available This data article reports the chemical properties (moisture, pH, salinity, and soluble solid content and colors of fermenting materials in salmon fish sauce products. The fish sauce was produced by mixing salt with differing proportions of raw salmon materials and fermenting for three months; the salmon materials comprised flesh, viscera, an inedible portion, and soft roe. Chemical properties and colors of the unrefined fish sauce (moromi, and the refined fish sauce, were analyzed at one, two, and three months following the start of fermentation. Data determined for all products are provided in table format. Keywords: Fish sauce, Chum salmon, Fermentation, Chemical properties, Color

  11. An eDNA Assay to Monitor a Globally Invasive Fish Species from Flowing Freshwater.

    Science.gov (United States)

    Adrian-Kalchhauser, Irene; Burkhardt-Holm, Patricia

    2016-01-01

    Ponto-Caspian gobies are a flock of five invasive fish species that have colonized freshwaters and brackish waters in Europe and North America. One of them, the round goby Neogobius melanostomus, figures among the 100 worst invaders in Europe. Current methods to detect the presence of Ponto-Caspian gobies involve catching or sighting the fish. These approaches are labor intense and not very sensitive. Consequently, populations are usually detected only when they have reached high densities and when management or containment efforts are futile. To improve monitoring, we developed an assay based on the detection of DNA traces (environmental DNA, or eDNA) of Ponto-Caspian gobies in river water. The assay specifically detects invasive goby DNA and does not react to any native fish species. We apply the assay to environmental samples and demonstrate that parameters such as sampling depth, sampling location, extraction protocol, PCR protocol and PCR inhibition greatly impact detection. We further successfully outline the invasion front of Ponto-Caspian gobies in a large river, the High Rhine in Switzerland, and thus demonstrate the applicability of the assay to lotic environments. The eDNA assay requires less time, equipment, manpower, skills, and financial resources than the conventional monitoring methods such as electrofishing, angling or diving. Samples can be taken by untrained individuals, and the assay can be performed by any molecular biologist on a conventional PCR machine. Therefore, this assay enables environment managers to map invaded areas independently of fishermen's' reports and fish community monitorings.

  12. Effect of a Recently Completed Habitat Rehabilitation and Enhancement Project on Fish Abundance in La Grange Pool of the Illinois River Using Long Term Resource Monitoring Program Data

    National Research Council Canada - National Science Library

    O'Hara, Timothy M; McClelland, Michael A; Irons, Kevin S; Cook, Thad R; Sass, Greg G

    2008-01-01

    The Long Term Resource Monitoring Program (LTRMP) fish component monitors fish communities to test for changes in abundances and species composition in six regional trend areas of the Upper Mississippi River System...

  13. Fish Protein Concentrate Fortification Siam Patin on Amplang Snack Products and Mi Sago Instant Product as a Leading Regional Riau

    Directory of Open Access Journals (Sweden)

    Dewita Buchari

    2014-11-01

    Full Text Available To enhance fish consumption in the community especially children, fortification on processed fish product is conducted. The processed fish products are developed to fill the requirements as the fish based food products that own characterizations such as ready to eat, easy to carry, and less time to cook. Amplang snacks and instant sagoo noodles are defined as the products that fills the requirements. The research was aimed to process catfish into fish protein concentrate to become amplang snack and instant sagoo noodles. These products were designed as the effort to develop the local priority products in Riau by using diversification and fortification methods. Experimental method with fortification treatments on Fish Protein Concentrate (FPC extract from Catfish that generate products of amplang snacks and instant sagoo noodles and fish tofu were carried out. The fortified products were examined by organoleptics test that involved panelists. The results showed that the proximate analysis on fortified Catfish Protein Concentrate products were presented as following :1. water contents of 3,13 %, ash of 2,85 %, protein content of 16,13 % and fat content of 18, 66 % for ampang snacks; and 2. water contents of 11,77 %, ash of 1,30 %, protein content of 12,35 % and fat content of 1,86 % for instant sagoo nodles. All fortified FPC products filled the Indonesian Nasional Standard (SNI.Keywords: Fortification, Catfish, and Fish Protein Concentrate

  14. Application of biotechnology in fish breeding. II: production of highly ...

    African Journals Online (AJOL)

    The present study aims to produce a highly immune, genetically modified redbelly tilapia, Tilapia zillii with accelerated growth as a result of direct injection of shark (Squalus acanthias L.) DNA into skeletal muscles of fish fingerlings at concentrations of 10, 20, 40 and 80 μg/fish. The results showed that the fish injected with ...

  15. Better processing and marketing of healthy fish products in Malawi

    International Development Research Centre (IDRC) Digital Library (Canada)

    : small fish, in particular, are a vital source of calcium, vi- tamin A, iron, and zinc. Once caught, most fish are sun-dried, smoked, parboiled, or pan roasted. However, peak fish catches in Malawi coincide with seasonal rains and high humidity,.

  16. Importance of Photobacterium phosphoreum in relation to spoilage of modified atmosphere-packed fish products

    DEFF Research Database (Denmark)

    Dalgaard, Paw; Mejlholm, Ole; Christiansen, T.J.

    1997-01-01

    Occurrence and growth of Photobacterium phosphoreum were studied in 20 experiments with fresh fish from Denmark, Iceland and Greece. The organism was detected in all marine fish species but not in fish from fresh water. Growth of P. phosphoreum to high levels (>10(7) cfu g(-1)) was observed in most...... products and the organism is likely to be of importance for spoilage of several modified atmosphere-packed (MAP) marine fish species when stored at chill temperatures. Some microbiological methods recommended for control of fish products by national and international authorities are inappropriate...... for detection of psychrotolerant and heat-labile micro-organisms like P. phosphoreum. These methods have been used in many previous studies of MAP fish and this could explain why, contrary to the findings in the present study, P. phosphoreum in general was not detected previously in spoiled MAP fish....

  17. Productivity and recovery of forage fish under climate change and fishing: North Sea sandeel as a case study

    DEFF Research Database (Denmark)

    Lindegren, Martin; van Deurs, Mikael; MacKenzie, Brian

    2018-01-01

    -east Atlantic, acting as a key prey for predatory fish and sea birds, as well as supporting a large commercial fishery. In this case study, we investigate the underlying factors affecting recruitment and how these in turn affect productivity of the North Sea sandeel using long-term data and modelling. Our...... results demonstrate how sandeel productivity in the central North Sea (Dogger Bank) depends on a combination of external and internal regulatory factors, including fishing and climate effects, as well as density dependence and food availability of the preferred zooplankton prey (Calanus finmarchicus...... and Temora longicornis). Furthermore, our model scenarios suggest that while fishing largely contributed to the abrupt stock decline during the late 1990s and the following period of low biomass, a complete recovery of the stock to the highly productive levels of the early 1980s would only be possible...

  18. Benzo[a]pyrene and Benzo[k]fluoranthene in Some Processed Fish and Fish Products

    Directory of Open Access Journals (Sweden)

    Olatunde S. Olatunji

    2015-01-01

    Full Text Available In this study, the concentration levels of the probable carcinogenic PAH fractions, benzo[a]pyrene (BaP and benzo[k]fluoranthrene (BkF in fillets of some processed fish species were investigated. Fish species comprising Merluccius poli (hake, Tyrsites atun (snoek, Seriola lalandi (yellow-tail and Brama brama (angel fish were bought in fish shops at Gordon’s Bay, Western Cape, South Africa. The fish were gutted, filleted and prepared for edibility by frying, grilling and boiling. Polycyclic aromatic hydrocarbons were extracted from each homogenized fish sample, cleaned-up using solid phase extraction (SPE, and analysed for the PAH fractions, BaP and BkF using a Gas Chromatograph coupled with a Flame Ionization Detector (GC-FID. The sum of the two PAHs (∑2PAH i.e., BaP and BkF ranged between 0.56 and 1.46 µg/kg, in all boiled, grilled and fried fish species. The fried fish extracts showed significantly higher (p < 0.05 abundance of ∑2PAH, than grilled and boiled fish. Dietary safety and PAHs toxicity was also discussed.

  19. EU REPRO: The Production of fish feed enriched with poly-unsaturated fatty acid

    CSIR Research Space (South Africa)

    Erasmus, C

    2007-01-01

    Full Text Available .2 The Production of Fish Feed enriched with poly-unsaturated fatty acids Corinda Erasmus Annali Jacobs Gerda Lombard Petrus van Zyl Judy Reddy Ntombikayise Nkomo Elizabeth Timme Partner 11 Slide 2 © CSIR 2006 www... www.csir.co.za FLOW DIAGRAM OF THE PRODUCTION OF EPA- ENRICHED FISH FEED BSG (SPENT GRAIN) Eicosapentaenoic Acid (EPA) Protein-rich BSG FISH FEED PELLETS MODIFICATION OF BSG (ENZYME/CHEMICAL/MECHANICAL) FERMENTATION (RECOVERY OF EPA...

  20. Peptides from Fish By-product Protein Hydrolysates and Its Functional Properties: an Overview.

    Science.gov (United States)

    Zamora-Sillero, Juan; Gharsallaoui, Adem; Prentice, Carlos

    2018-04-01

    The inadequate management of fish processing waste or by-products is one of the major problems that fish industry has to face nowadays. The mismanagement of this raw material leads to economic loss and environmental problems. The demand for the use of these by-products has led to the development of several processes in order to recover biomolecules from fish by-products. An efficient way to add value to fish waste protein is protein hydrolysis. Protein hydrolysates improve the functional properties and allow the release of peptides of different sizes with several bioactivities such as antioxidant, antimicrobial, antihypertensive, anti-inflammatory, or antihyperglycemic among others. This paper reviews different methods for the production of protein hydrolysates as well as current research about several fish by-products protein hydrolysates bioactive properties, aiming the dual objective: adding value to these underutilized by-products and minimizing their negative impact on the environment.

  1. High‐resolution mass spectrometry of skin mucus for monitoring physiological impacts and contaminant biotransformation products in fathead minnows exposed to wastewater effluent

    Science.gov (United States)

    High‐resolution mass spectrometry is advantageous for monitoring physiological impacts and contaminant biotransformation products in fish exposed to complex wastewater effluent. We evaluated this technique using skin mucus from male and female fathead minnows (Pimephales pr...

  2. Coliform Bacteria Monitoring in Fish Systems: Current Practices in Public Aquaria.

    Science.gov (United States)

    Culpepper, Erin E; Clayton, Leigh A; Hadfield, Catherine A; Arnold, Jill E; Bourbon, Holly M

    2016-06-01

    Public aquaria evaluate coliform indicator bacteria levels in fish systems, but the purpose of testing, testing methods, and management responses are not standardized, unlike with the coliform bacteria testing for marine mammal enclosures required by the U.S. Department of Agriculture. An online survey was sent to selected aquaria to document current testing and management practices in fish systems without marine mammals. The information collected included indicator bacteria species, the size and type of systems monitored, the primary purpose of testing, sampling frequency, test methods, the criteria for interpreting results, corrective actions, and management changes to limit human exposure. Of the 25 institutions to which surveys were sent, 19 (76%) responded. Fourteen reported testing for fecal indicator bacteria in fish systems. The most commonly tested indicator species were total (86%) and fecal (79%) coliform bacteria, which were detected by means of the membrane filtration method (64%). Multiple types and sizes of systems were tested, and the guidelines for testing and corrective actions were highly variable. Only three institutions performed additional tests to confirm the identification of indicator organisms. The results from this study can be used to compare bacterial monitoring practices and protocols in fish systems, as an aid to discussions relating to the accuracy and reliability of test results, and to help implement appropriate management responses. Received August 23, 2015; accepted December 29, 2015.

  3. Impact of genetically improved fish species and technology on selected hatchery and fish production in Bangladesh

    Directory of Open Access Journals (Sweden)

    MS Islam

    2017-06-01

    Full Text Available The study was carried out in IAPP commanding areas from July to September 2015. A total of 8 hatchery and 240 farmers were selected for this study from Rangpur and Barisal region. About 153% Tilapia production increased which was from 34 to 86 lakh, which was 148% in Rangpur district. Thai koi production was increased about 320% in Rangpur and it was 152% in Barisal. It was observed that, per hatchery Tilapia profit was Tk. 17.35 lakh and Tk. 17.18 lakh in Rangpur and Barisal, respectively. While, total profit was 3.9 times more for Thai koi in Rangpur and it was about 1.7 times more in Barisal after IAPP-BFRI project implementation. Impact of improved germplasm on grow out system was estimated. Finding shows that before IAPP-BFRI project the average harvesting weight of tilapia fish was 122g but after using IAPP-BFRI germplasm, it increased to 194g in Rangpur district. In case of Thai Koi, the harvesting weight gain was 26% in Rangpur district and it was statistically significant at 1% level. Survey results also show that per acre profit was only Tk.86671 for Tilapia farming before IAPP whereas it was increased to Tk. 234853 after IAPP-BFRI intervention. At the same time, profit from Thai Koi was increased about 189% after IAPPBFRI activities. Similarly, profit was increased about 86% in case of Pangus farming and this positive impact was statistically significant at 1% level. Therefore, it may conclude that, farmers can significantly increase Tilapia, Thai Koi and Pangus production as well as can maximize profit using IAPP technology.

  4. Arthropod pests of dried fish and fish by product in a tropical urban ...

    African Journals Online (AJOL)

    A four months research survey of arthropod pests infesting dried fish sold in a tropical urban community market (Ogige), Nsukka, Ngeria showed that 10 genera o dried freshwater fish (Synodontis, Hemisynodontis, Oreochromis, Hepsetus, Gymnarchus, Labeo, Protopterus, Heterobranchus, Alestes, Heterotis) and two ...

  5. Recycle food wastes into high quality fish feeds for safe and quality fish production.

    Science.gov (United States)

    Wong, Ming-Hung; Mo, Wing-Yin; Choi, Wai-Ming; Cheng, Zhang; Man, Yu-Bon

    2016-12-01

    The amount of food waste generated from modern societies is increasing, which has imposed a tremendous pressure on its treatment and disposal. Food waste should be treated as a valuable resource rather than waste, and turning it into fish feeds would be a viable alternative. This paper attempts to review the feasibility of using food waste to formulate feed pellets to culture a few freshwater fish species, such as grass carp, grey mullet, and tilapia, under polyculture mode (growing different species in the same pond). These species occupy different ecological niches, with different feeding modes (i.e., herbivorous, filter feeding, etc.), and therefore all the nutrients derived from the food waste could be efficiently recycled within the ecosystem. The problems facing environmental pollution and fish contamination; the past and present situation of inland fish culture (focusing on South China); upgrade of food waste based feed pellets by adding enzymes, vitamin-mineral premix, probiotics (yeast), prebiotics, and Chinese medicinal herbs into feeds; and potential health risks of fish cultivated by food waste based pellets are discussed, citing some local examples. It can be concluded that appropriate portions of different types of food waste could satisfy basic nutritional requirements of lower trophic level fish species such as grass carp and tilapia. Upgrading the fish pellets by adding different supplements mentioned above could further elevated the quality of feeds, leading to higher growth rates, and enhanced immunity of fish. Health risk assessments based on the major environmental contaminants (mercury, PAHs and DDTs) in fish flesh showed that fish fed food waste based pellets are safer for consumption, when compared with those fed commercial feed pellets. Copyright © 2016 Elsevier Ltd. All rights reserved.

  6. Fisheries monitoring in Babel: fish ethnotaxonomy in a hotspot of common names

    Directory of Open Access Journals (Sweden)

    Marilia Previero

    Full Text Available The lack of a long term, comprehensive and reliable fisheries statistics system is a major impediment to fisheries management in Brazil. Fishing is one of the main activities throughout the country's coast, with predominance of small-scale, artisanal, multigear, and multispecies captures that are landed in a pulverized network of coastal villages. Brazil is also a hotspot of common names, another feature that challenges artisanal fisheries' monitoring. We combined taxonomic and ethnobiological information to support the implementation of an artisanal fisheries' monitoring program under the co-management framework of a Marine Extractive Reserve in Bahia State, Northeastern Brazil. We surveyed 141 fishing landings, recording 86 fish species (43 families and 52 correspondences 1:1 between local and scientific names. Broad folk categories had an average of 5.1 specific names, with "cação" (shark being the category with more specific names (24 names to six biological species. With the exception of species that make up the bycatch captured by shrimp trawling, fisherfolks are able to identify commercially important species from both fresh specimens and photos. Common names can be reliably used in fisheries monitoring programs, and their usage facilitates the participation of fisherfolks in surveys based on voluntary or compulsory declarations of captures

  7. Environmental DNA for freshwater fish monitoring: insights for conservation within a protected area

    Directory of Open Access Journals (Sweden)

    Sara Fernandez

    2018-03-01

    Full Text Available Background Many fish species have been introduced in wild ecosystems around the world to provide food or leisure, deliberately or from farm escapes. Some of those introductions have had large ecological effects. The north American native rainbow trout (Oncorhynchus mykiss Walbaum, 1792 is one of the most widely farmed fish species in the world. It was first introduced in Spain in the late 19th century for sport fishing (Elvira 1995 and nowadays is used there for both fishing and aquaculture. On the other hand, the European native brown trout (Salmo trutta L. is catalogued as vulnerable in Spain. Detecting native and invasive fish populations in ecosystem monitoring is crucial, but it may be difficult from conventional sampling methods such as electrofishing. These techniques encompass some mortality, thus are not adequate for some ecosystems as the case of protected areas. Environmental DNA (eDNA analysis is a sensitive and non-invasive method that can be especially useful for rare and low-density species detection and inventory in water bodies. Methods In this study we employed two eDNA based methods (qPCR and nested PCR-RFLP to detect salmonid species from mountain streams within a protected area, The Biosphere Reserve and Natural Park of Redes (Upper Nalón Basin, Asturias, Northern Spain, where brown trout is the only native salmonid. We also measured some habitat variables to see how appropriate for salmonids the area is. The sampling area is located upstream impassable dams and contains one rainbow trout fish farm. Results Employing qPCR methodology, brown trout eDNA was detected in all the nine sampling sites surveyed, while nested PCR-RFLP method failed to detect it in two sampling points. Rainbow trout eDNA was detected with both techniques at all sites in the Nalón River’ (n1, n2 and n3. Salmonid habitat units and water quality were high from the area studied. Discussion In this study, a high quantity of rainbow trout eDNA was found

  8. Environmental DNA for freshwater fish monitoring: insights for conservation within a protected area.

    Science.gov (United States)

    Fernandez, Sara; Sandin, Miguel M; Beaulieu, Paul G; Clusa, Laura; Martinez, Jose L; Ardura, Alba; García-Vázquez, Eva

    2018-01-01

    Many fish species have been introduced in wild ecosystems around the world to provide food or leisure, deliberately or from farm escapes. Some of those introductions have had large ecological effects. The north American native rainbow trout ( Oncorhynchus mykiss Walbaum, 1792) is one of the most widely farmed fish species in the world. It was first introduced in Spain in the late 19th century for sport fishing (Elvira 1995) and nowadays is used there for both fishing and aquaculture. On the other hand, the European native brown trout ( Salmo trutta L.) is catalogued as vulnerable in Spain. Detecting native and invasive fish populations in ecosystem monitoring is crucial, but it may be difficult from conventional sampling methods such as electrofishing. These techniques encompass some mortality, thus are not adequate for some ecosystems as the case of protected areas. Environmental DNA (eDNA) analysis is a sensitive and non-invasive method that can be especially useful for rare and low-density species detection and inventory in water bodies. In this study we employed two eDNA based methods (qPCR and nested PCR-RFLP) to detect salmonid species from mountain streams within a protected area, The Biosphere Reserve and Natural Park of Redes (Upper Nalón Basin, Asturias, Northern Spain), where brown trout is the only native salmonid. We also measured some habitat variables to see how appropriate for salmonids the area is. The sampling area is located upstream impassable dams and contains one rainbow trout fish farm. Employing qPCR methodology, brown trout eDNA was detected in all the nine sampling sites surveyed, while nested PCR-RFLP method failed to detect it in two sampling points. Rainbow trout eDNA was detected with both techniques at all sites in the Nalón River' (n1, n2 and n3). Salmonid habitat units and water quality were high from the area studied. In this study, a high quantity of rainbow trout eDNA was found upstream and downstream of a fish farm located

  9. Utilization of fish meal and fish oil for production of Cryptococcus sp. MTCC 5455 lipase and hydrolysis of polyurethane thereof

    OpenAIRE

    Thirunavukarasu, K.; Purushothaman, S.; Gowthaman, M. K.; Nakajima-Kambe, T.; Rose, C.; Kamini, N. R.

    2015-01-01

    Fish meal has been used as an additional nitrogen source and fish oil as inducer for the growth and production of lipase from Cryptococcus sp. MTCC 5455. A response surface design illustrated that the optimum factors influencing lipase production were fish meal, 1.5 %, w/v, Na2HPO4, 0.2 %, w/v, yeast extract, 0.25 %, w/v and sardine oil, 2.0 %, w/v with an activity of 71.23 U/mL at 96 h and 25 °C, which was 48.39 % higher than the conventional one-factor-at-a-time method. The crude concentrat...

  10. Chemical properties and colors of fermenting materials in salmon fish sauce production.

    Science.gov (United States)

    Nakano, Mitsutoshi; Sagane, Yoshimasa; Koizumi, Ryosuke; Nakazawa, Yozo; Yamazaki, Masao; Watanabe, Toshihiro; Takano, Katsumi; Sato, Hiroaki

    2018-02-01

    This data article reports the chemical properties (moisture, pH, salinity, and soluble solid content) and colors of fermenting materials in salmon fish sauce products. The fish sauce was produced by mixing salt with differing proportions of raw salmon materials and fermenting for three months; the salmon materials comprised flesh, viscera, an inedible portion, and soft roe. Chemical properties and colors of the unrefined fish sauce ( moromi ), and the refined fish sauce, were analyzed at one, two, and three months following the start of fermentation. Data determined for all products are provided in table format.

  11. Fish crackers development from minced fish and starch: an innovative approach to a traditional product

    Directory of Open Access Journals (Sweden)

    Cristiane Rodrigues Pinheiro Neiva

    2011-12-01

    Full Text Available This study aimed to develop sensory acceptable, high nutritional value fish crackers that could be kept at room temperature for 180 days. Minced fish of different low-value species was the raw material employed to produce two types of fish crackers: a the traditional keropok cracker, which was expanded by deep frying; and b a low-fat fish cracker, expanded by microwave cooking. The protein content of the fried fish crackers (FFCs and that of the microwaved fish crackers (MFCs were high (10.86 and 14.70%, respectively. The essential amino acid contents of the two types of fish cracker were above the FAO requirements for adults, and the lysine content was above the requirements for children. Sensory analysis, performed by adult panelists, resulted in a general level of acceptability of 90% for the MFCs and of 97% for the FFCs. Vacuum packaging maintained microbiological and physicochemical properties for a storage period of 180 days at room temperature.

  12. Random and systematic sampling error when hooking fish to monitor skin fluke (Benedenia seriolae) and gill fluke (Zeuxapta seriolae) burden in Australian farmed yellowtail kingfish (Seriola lalandi).

    Science.gov (United States)

    Fensham, J R; Bubner, E; D'Antignana, T; Landos, M; Caraguel, C G B

    2018-05-01

    The Australian farmed yellowtail kingfish (Seriola lalandi, YTK) industry monitor skin fluke (Benedenia seriolae) and gill fluke (Zeuxapta seriolae) burden by pooling the fluke count of 10 hooked YTK. The random and systematic error of this sampling strategy was evaluated to assess potential impact on treatment decisions. Fluke abundance (fluke count per fish) in a study cage (estimated 30,502 fish) was assessed five times using the current sampling protocol and its repeatability was estimated the repeatability coefficient (CR) and the coefficient of variation (CV). Individual body weight, fork length, fluke abundance, prevalence, intensity (fluke count per infested fish) and density (fluke count per Kg of fish) were compared between 100 hooked and 100 seined YTK (assumed representative of the entire population) to estimate potential selection bias. Depending on the fluke species and age category, CR (expected difference in parasite count between 2 sampling iterations) ranged from 0.78 to 114 flukes per fish. Capturing YTK by hooking increased the selection of fish of a weight and length in the lowest 5th percentile of the cage (RR = 5.75, 95% CI: 2.06-16.03, P-value = 0.0001). These lower end YTK had on average an extra 31 juveniles and 6 adults Z. seriolae per Kg of fish and an extra 3 juvenile and 0.4 adult B. seriolae per Kg of fish, compared to the rest of the cage population (P-value sampling towards the smallest and most heavily infested fish in the population, resulting in poor repeatability (more variability amongst sampled fish) and an overestimation of parasite burden in the population. In this particular commercial situation these finding supported that health management program, where the finding of an underestimation of parasite burden could provide a production impact on the study population. In instances where fish populations and parasite burdens are more homogenous, sampling error may be less severe. Sampling error when capturing fish

  13. POTENTIAL PRODUCTION OF DEMERSAL FISH STOCK IN THE MALACCA STRAIT OF INDONESIA

    Directory of Open Access Journals (Sweden)

    Purwanto Purwanto

    2015-06-01

    Full Text Available Malacca Strait is one of the main fishing areas for demersal fishery in Indonesia. To support the management of that fishery, an assessment of the demersal fish stock was conducted. This study estimated that the maximum sustainable yield and the optimal catch per unit effortof demersal fishery in the Malacca Strait were about 106.8 thousand tons/year and 28.5 tons per unit of Danish seine, respectively, resulting from the operation of 3,752 Danish seines. Unfortunately, fishing effort was higher than its optimum level and the fish stock was over-exploited since 2003. To recover the demersal fish stock to its optimum level and to ensure the optimal fish production from demersal fishery in the Malacca Strait, it was necessary to reduce fishing effort at about 67% from its level in 2011.

  14. Extraction by Dry Rendering Methode and Characterization Fish Oil of Catfish Viscera Fat by Product of Smooked Fish Processing

    Directory of Open Access Journals (Sweden)

    Kamini Kamini

    2017-02-01

    Full Text Available AbstractThe catfish viscera fat, is cathfish processing by-products, has potential to be used as a source of rawmaterial for production of fish oil. This study aimed to analyze the value of proximate, heavy metal contentand fatty acid profile of catfish viscera fat (Pangasius hypopthalmus and characterized fish oil extracted bydry rendering in various temperature and time than compared it to fish oil extracted by stove heating toobtain the best treatment. Proximate, heavy metal residue, and the fatty acid profile analysis were conductedfor characterizing catfish viscera fat. Fish oil extraction was conducted by dry rendering in varioustemperatures of 50, 60, 70, 80 °C for 1, 2, and 3 hours. Fish oil quality was determined by the chemicalcharacteristics i.e. PV, FFA, anisidin and TOTOX. The results of the study showed that fat content of catfishfat viscera was 88.19 %, the heavy metals content was below SNI standart to be consumed, and fatty acidprofile composition was SFA>MUFA>PUFA. The highest fatty acid content was oleic acid. The best fish oilquality was resulted on temperature extraction of 50°C for 2 hours with yield value, PV, FFA, anisidin, andTOTOX were 45.17 %, 2.77 meq/kg, 0.83 %, 2.86 meq/kg, 8.39 meq/kg respectively. This result was notsignificantly different with fish oil extracted by the stove heating expect for yield and PV were 80.11% and6.52 meq/kg, respectively.

  15. A review of lipid extraction from fish processing by-product for use as a biofuel

    International Nuclear Information System (INIS)

    Adeoti, Ibraheem A.; Hawboldt, Kelly

    2014-01-01

    Fish processing facilities generate a significant amount of fish by-products that could be an important source of energy, food, or industrial feedstock. While fish oil is a natural source of omega-3 polyunsaturated fatty acids (mostly eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA)) used in nutritional supplements, the ability to extract, refine, and get to market of these oils may be challenging at processing facilities where there is limited infrastructure and plants are remotely located. Under these conditions, extraction of oil from fish by-product for use as an in-house or regional fuel may be both economically and environmentally be a more sustainable approach. Processes to extract and refine fish oil for fuel are less energy intensive than the processes for nutritional quality oils and do not require the stringent product specifications and approval process as in the food and pharmaceutical industry. Unlike food crops, extraction of oil from fish residue does not negatively impact food production. This paper presents an overview of developments made in fish oil extraction methodologies including physical, chemical and biological processes. - Highlights: • We have reviewed various lipid extraction methods from fish residue. • Low grade fish oils for fuel applications can be beneficial to facility and region. • The environmental impacts and safety issues can be reduced using SFE method

  16. Production of fish finger from sand smelt (Atherina boyeri, RISSO ...

    African Journals Online (AJOL)

    Administrator

    2011-05-23

    May 23, 2011 ... Departmant of Fishing and Fish Processing Technology, Faculty of Fisheries, University of Süleyman Demirel, 32500. Eğirdir, Isparta, Turkey. ... the consumption of food as “heat and eat” has become important. Food sector .... In many of the developed countries, the habits of nourish- ment are changing and ...

  17. Strategy for increasing marine fish production in Goa

    Digital Repository Service at National Institute of Oceanography (India)

    Parulekar, A

    stream_size 5 stream_content_type text/plain stream_name Proc_Workshop_Evol_Strat_Dev_Agric_Anim_Husb_Fish_Goa_1991_73.pdf.txt stream_source_info Proc_Workshop_Evol_Strat_Dev_Agric_Anim_Husb_Fish_Goa_1991_73.pdf.txt Content...

  18. Better processing and marketing of healthy fish products in Malawi

    International Development Research Centre (IDRC) Digital Library (Canada)

    In Malawi, fish provide 70% of the animal protein in people's diets: small fish, in particular, are a vital source of calcium, vi- tamin A, iron, and zinc. ... es in Malawi coincide with seasonal rains and high humidity, which interfere with drying and ...

  19. Production of live prey for marine fish larvae

    OpenAIRE

    Kraul, S

    1989-01-01

    Tropical marine fish larvae vary in their requirements for live planktonic food. Selection of live prey species for culture depends on larval size and larval tolerance of water quality. This report describes some of the cultured prey species, and their uses and limits as effective food for fish larvae. Methods are presented for the culture of phytoplankton, rotifers, copepods, and other live feeds.

  20. Monitoring stress in fish by applying image analysis to their skin mucous cells

    Directory of Open Access Journals (Sweden)

    I. N. Vatsos

    2010-05-01

    Full Text Available Several authors have previously demonstrated that the number of the skin mucous cells of fish is affected by many stressors. In the present study, two experiments were conducted in order to examine the effects of two common environmental conditions on the morphology of skin of sea bass and particularly on the number and diameter of skin mucous cells. In the first experiment, two groups of sea bass (mean weight 155.6±10.3 g SD were maintained in two different concentrations of nitrate, 100 and 700 ppm respectively, for 48 h, while a third group was used as control. In the second experiment, sea bass (initial mean weight 78.9±3.1 g SD were divided into four groups and each group was maintained in a different level of oxygen for 9 weeks. The oxygen concentration in each group was: 3.6±0.2 ppm, 4.7±0.2 ppm, 6.2±0.2 ppm and 8.2±0.2 ppm. In both experiments the effects of the two environmental factors on the morphology of the fish skin were examined histologically and a software containing a visual basic script macro, allowing quantification of the skin mucous cells, was used to analyze the skin tissue sections. Concerning the overall morphology of the skin and the diameter of the skin mucous cells, no differences were noted in both experiments (P>0.05. It was demonstrated however, that fish maintained in the lowest oxygen level and fish maintained in the highest concentration of nitrate exhibited significantly increased number of mucous cells per skin area (mm2. There is evidence that the enumeration of the skin mucous cells of fish can be used to monitor stress in fish.

  1. Production of oxidatively stable fish oil enriched food emulsions

    DEFF Research Database (Denmark)

    Bruni Let, Mette

    Purpose: The objective of the project is to determine how a number of selected fish oil enriched foods can be protected against oxidation by the right choice of antioxidants, emulsifiers and optimal process conditions. Furthermore the influence of antioxidant addition to the fish oil it...... have many other health benefiting properties such as preventing heart diseases. Addition of fish oils to foods is therefore of interest. The many double bonds in the fatty acids are however susceptible to oxidation. Collaboration partners: The project is a collaborative project between DFU-FF, Bio......-self on the effect of antioxidants added to the foods will also be investigated. Background: Fish oils are rich sources of the long-chain polyunsaturated fatty acids EPA and DHA of which DHA is a vital component of the phospholipids of human cellular membranes, especially those in the brain and retina. Fish oils...

  2. Agricultural Productivity Forecasts for Improved Drought Monitoring

    Science.gov (United States)

    Limaye, Ashutosh; McNider, Richard; Moss, Donald; Alhamdan, Mohammad

    2010-01-01

    Water stresses on agricultural crops during critical phases of crop phenology (such as grain filling) has higher impact on the eventual yield than at other times of crop growth. Therefore farmers are more concerned about water stresses in the context of crop phenology than the meteorological droughts. However the drought estimates currently produced do not account for the crop phenology. US Department of Agriculture (USDA) and National Oceanic and Atmospheric Administration (NOAA) have developed a drought monitoring decision support tool: The U.S. Drought Monitor, which currently uses meteorological droughts to delineate and categorize drought severity. Output from the Drought Monitor is used by the States to make disaster declarations. More importantly, USDA uses the Drought Monitor to make estimates of crop yield to help the commodities market. Accurate estimation of corn yield is especially critical given the recent trend towards diversion of corn to produce ethanol. Ethanol is fast becoming a standard 10% ethanol additive to petroleum products, the largest traded commodity. Thus the impact of large-scale drought will have dramatic impact on the petroleum prices as well as on food prices. USDA's World Agricultural Outlook Board (WAOB) serves as a focal point for economic intelligence and the commodity outlook for U.S. WAOB depends on Drought Monitor and has emphatically stated that accurate and timely data are needed in operational agrometeorological services to generate reliable projections for agricultural decision makers. Thus, improvements in the prediction of drought will reflect in early and accurate assessment of crop yields, which in turn will improve commodity projections. We have developed a drought assessment tool, which accounts for the water stress in the context of crop phenology. The crop modeling component is done using various crop modules within Decision Support System for Agrotechnology Transfer (DSSAT). DSSAT is an agricultural crop

  3. LIMNOLOGICAL CONDITION AND ESTIMATION OF POTENTIAL FISH PRODUCTION OF KERINCI LAKE JAMBI, SUMATRA

    Directory of Open Access Journals (Sweden)

    Samuel Samuel

    2015-06-01

    Full Text Available Kerinci Lake is a type of tectonic lakes located in a protected forest area of National Park of Kerinci Sebelat and a source of various fish species important for local people for their dayly food comsumption and income. However, few information is available on limnological condition and fish resources. Field research observing the limnological condition and estimating the potential fish production was conducted four times in April, June, August and October 2013. The research is aimed to describe the condition of limnology and estimate the potential fish production of the lake. Limnological aspect included the physico-chemical and biological parameters, namely: temperature, water transparency, depth, substrate, conductivity, pH, dissolved oxygen, alkalinity, ammonia, nitrate, phosphate, total phosphorus, chlorophyll-a and trophic state. Potential fish production was calculated by using the biological parameter levels of chlorophyll-a. The results show that the euphotic layer of the lake waters was still feasible for fish life. Water condition of the bottom layer was less supportable for fish life due to low dissolved oxygen content. Trophic state index (TSI values, either measured by temporal and spatial ways, had TSI with an average of 61.75. From these index, the lake is classified as a lake at the high productivity level (eutrophic. Annual fish production was an average of 307 kg/ha/year. By taking account the average of fish production and the total area of lake of around 4,200 ha, the potential fish production of Kerinci Lake is estimated about ± 1,287 tons/year.

  4. Eucalyptus kraft pulp production: Thermogravimetry monitoring

    International Nuclear Information System (INIS)

    Barneto, Agustin G.; Vila, Carlos; Ariza, Jose

    2011-01-01

    Highlights: → Thermogravimetric analysis can be used to monitor the pulping process in a pulp mill. → ECF bleaching process affects the crystalline cellulose volatilization. → The fibre size has an influence on composition and thermal behavior of pulp. - Abstract: Under oxidative environment the thermal degradation of lignocellulosic materials like wood or pulp is sensitive to slight composition changes. For this, in order to complement the chemical and X-ray diffraction results, thermogravimetric analyses (TGA) were used to monitor pulp production in a modern pulp mill. Runs were carried out on crude, oxygen delignified and bleached pulps from three eucalyptus woods from different species and geographical origins. Moreover, with the modeling of thermogravimetric data, it was possible to obtain an approximate composition of samples which includes crystalline and amorphous cellulose. TGA results show that pulping has an intensive effect on bulk lignin and hemicellulose, but it has limited influence on the removal of these substances when they are linked to cellulose microfibril. The stages of oxygen delignification and bleaching, based in chlorine dioxide and hydrogen peroxide, increase the crystalline cellulose volatilization rate. These changes are compatible with a more crystalline microfibril. The influence of the fibre size on pulp composition, crystallinity and thermal degradation behavior was observed.

  5. Monitoring rationale, strategy, issues, and methods: UMRR-EMP LTRMP fish component

    Science.gov (United States)

    Ickes, Brian S.; Sauer, Jennifer S.; Rogala, James T.

    2014-01-01

    The Long Term Resource Monitoring Program (LTRMP), an element of the multiagency partnership Upper Mississippi River Restoration-Environmental Management Program, has been monitoring fishes in the Upper Mississippi River System (UMRS) for over two decades, using scientific and highly standardized methods. Today, the LTRMP’s data assets represent one of the world’s largest and most extensive datasets on a great river. Methods and procedures used over the past two decades have been documented and have proven a key tool towards gaining data that are (a) scientifically valid, (b) comparable over time, and (c) comparable over space. These procedures manuals coordinate and standardize methods, procedures, and field behaviors in the execution of long-term monitoring, permitting the informed management and control of important sources of error actually under program control. As LTRMP databases have matured in scope and accumulated more years' worth of data, their utility in research and management in the UMRS basin has increased notably. To maximize their utility, data users need not only be aware of “how the data were collected,” as portrayed in the procedures manuals, but also “why the data were collected in the way they were, at the scales they were, and in the manner that they were.” Whereas the procedures manuals contribute information as to the “how” the data were gained, this document seeks to contribute information as to the “why.” As such, this document is intended to be a companion document to the procedures manuals. Herein, we present information on the rationale for monitoring nearly one-fifth of the entire North American freshwater fish fauna (representing the greatest freshwater fish diversity on the planet at temperate latitudes); strategies employed and their reasoning; and discussions on issues associated with the sampling design itself, data arising therefrom, and uses of those data in different contexts.

  6. Rapid changes in small fish mercury concentrations in estuarine wetlands: Implications for wildlife risk and monitoring programs

    Science.gov (United States)

    Eagles-Smith, Collin A.; Ackerman, Joshua T.

    2009-01-01

    Small fish are commonly used to assess mercury (Hg) risk to wildlife and monitor Hg in wetlands. However, limited research has evaluated short-term Hg variability in small fish, which can have important implications for monitoring programs and risk assessment. We conducted a time-series study of Hg concentrations in two small fish species representing benthic (longjaw mudsuckers [Gillichthys mirabilis]) and pelagic (threespine sticklebacks [Gasterosteus aculeatus]) food-webs within three wetland habitats in San Francisco Bay Estuary. We simultaneously monitored prey deliveries, nest initiation, and chick hatching dates of breeding Forster's terns (Sterna forsteri), the most abundant nesting piscivore in the region. Mudsuckers and sticklebacks were the predominant prey fish, comprising 36% and 25% of tern diet, and Hg concentrations averaged (geometric mean ?? SE, ??g/g dw) 0.44 ?? 0.01 and 0.68 ?? 0.03, respectively. Fish Hg concentrations varied substantially over time following a quadratic form in both species, increasing 40% between March and May then decreasing 40% between May and July. Importantly, Forster's terns initiated 68% of nests and 31% of chicks hatched during the period of peak Hg concentrations in prey fish. These results illustrate the importance of short-term temporal variation in small fish Hg concentrations for both Hg monitoring programs and assessing wildlife risk.

  7. Fish Research Project Oregon; Umatilla Hatchery Monitoring and Evaluation, 1992 Annual Report.

    Energy Technology Data Exchange (ETDEWEB)

    Keefe, MaryLouise; Carmichael, Richard W.; French, Rod A. (Oregon Department of Fish and Wildlife, Portland, OR)

    1993-03-01

    This report covers the first year of comprehensive monitoring and evaluation of the Umatilla Hatchery. As both the hatchery and the evaluation study are in the early stages of implementation, much of the information contained in this report is preliminary. The most crucial data for evaluating the success of the hatchery program, the data on post-release performance and survival, is yet unavailable. In addition, several years of data are necessary to make conclusions about rearing performance at Umatilla Hatchery. The conclusions drawn in this report should be viewed as preliminary and should be used in conjunction with additional information as it becomes available. A comprehensive fish health monitoring regimen was incorporated into the monitoring and evaluation study for Umatilla Hatchery. This is a unique feature of the Umatilla Hatchery evaluation project.

  8. Fish product quality evaluation based on temperature monitoring in ...

    African Journals Online (AJOL)

    Yomi

    2010-09-13

    Sep 13, 2010 ... sensory analysis and total volatile base-nitrogen (TVB-N) value. The result ... multiple businesses by starting/stopping the measure- ment and ... Comparing with three group samples, temperature history and the fluctuation ...

  9. Monitoring of East Channel dredge areas benthic fish population and its implications

    International Nuclear Information System (INIS)

    Drabble, Ray

    2012-01-01

    Regional annual sampling of commercial fish stocks formed a high priority for monitoring studies attendant with the granting of aggregate dredging licenses in the Eastern Channel Region (ECR) which had previously not been dredged. An assessment of 4 m beam trawl sampling between 2005 and 2008 following the granting of licences in 2006 is provided. The majority of fish species have shown marked reductions in abundance since commencement of dredging. Draghead entrainment has been identified as a possible contributory cause based upon the known vulnerability of selected species (). Other environmental factors considered offer no explanation for the changes in abundance. Comparative analyses with ICES data for plaice and sole over the study period demonstrate that changes in the ECR do not result from seasonal flux in the wider populations. An alternative impact model and potential mitigation measures are suggested.

  10. [Food hygiene aspects in the production of food fish in fishing].

    Science.gov (United States)

    Hörmansdorfer, S; Brand, U; Stein, H; Bauer, J

    1997-03-01

    The development of the aerob-mesophilic bacteria on epidermis and peritoneum of 68 barbels was determined at 0, 4 and 8 hours after slaughtering. Therefore, one group of 34 animals was stored at 15.3 degrees C, an other equal one at 21.6 degrees C. A change in germ counts per cm2 could be seen in none of the groups during the first 4 hours. However, unrefrigerated carcasses showed an increase of bacteria up to 5-fold between the 4th and 8th hour, whereas in the refrigerated group no change occurred during that time, too. Rinsing the fish after slaughtering resulted in a decrease of the initial bacterial counts by up to 65.4% and so in significantly lower germ loads at the end of the storage time. These results were confirmed by contaminating 24 rainbow trout with Salmonella Infantis artificially. The frequency of detection did not change in refrigerated fish over 8 hours, while nearly doubling in unrefrigerated ones. Moreover, it could be shown that a Salmonella-concentration of only 30 CFU per 100 ml water was sufficient for contaminating fish in detectable grades. The study leads to the conclusion that the storage of instantly slaughtered fish in a common thermobox with freezing elements is suited for preserving its microbiological status for at least 8 hours. The caging of living fish after capture, which must be regarded critically under the aspect of treating animals in a humane way, seems therefore unnecessary.

  11. Elasticities of resource- use in fish production: a case study of Oyo ...

    African Journals Online (AJOL)

    This paper examined the elasticities of resource use in fish production in Oyo agricultural zone, Oyo state. The data used is from a primary source. The instruments of data collection were structured questionnaire and in-depth interview. Multi-stage sampling technique was employed to sample 120 fish farmers. However ...

  12. Agricultural production - Phase 2. Indonesia. Rice - azolla - fish culture - use of nuclear technique

    International Nuclear Information System (INIS)

    Watanabe, Iwao.

    1991-01-01

    The primary aim of the expert mission was to provide advice on the use of nuclear techniques to study rice-azolla-fish culture. Results of the work performed so far show that basal application of azolla gives similar or better yields of rice than basal application of urea. Fish productivity was also found to be significantly higher when azolla is present. 2 tabs

  13. 76 FR 10556 - Codex Alimentarius Commission: Meeting of the Codex Committee on Fish and Fishery Products

    Science.gov (United States)

    2011-02-25

    ... Amendment to the Standard for Quick Frozen Fish Sticks. Proposed Food Additive Provisions in Standards for... DEPARTMENT OF AGRICULTURE Food Safety and Inspection Service [Docket No. FSIS-2010-0036] Codex Alimentarius Commission: Meeting of the Codex Committee on Fish and Fishery Products AGENCY: Office of the...

  14. Production of Imitated fish and Keeping their Quality by gamma irradiation

    International Nuclear Information System (INIS)

    Ali, H.E.S.

    2004-01-01

    this investigation aims to the possibility of utilizing the bolti fish which obtained from high dam lake specially large size and under utilized for manufacturing imitated shellfish product and compared with natural shell fish and also, aims to study the possibility of gamma irradiation at doses 1,3,and 5 kGy for keeping the quality of imitated fish product during cold storage. therefore whole fish bolti were obtained from Misr Aswan company. the whole fish were dressed and minced. the obtained minced fish was washed three times with sodium bicarbonate (0.2%), distilled water and sodium chloride solution (0.15%). the cryoprotectant ingredient (sorbitol, sucrose and tripoli phosphate) was added to washed minced fish for producing intermediate product (surimi). the final product (imitated fish) was manufactured by adding egg white, starch, corn oil, natural color and flavor of shrimp and crab according to special formula for shrimp and crab. the imitated shrimp sample were irradiated at doses 1,3 and 5 kGy and sold stored

  15. Validation of rapid dioxin screening by GC-FID in fish products

    Energy Technology Data Exchange (ETDEWEB)

    Bassompierre, M.; Munck, L.; Bro, R.; Tomasi, G.; Engelsen, S.B. [Royal Veterinary and Agricultural Univ., Copenhagen (Denmark). Food Technology, Institute of Food Science, Centre for Advanced Food Studies

    2004-09-15

    A novel, cost- and time-effective dioxin screening method was developed and validated for fish product. The method is based on multivariate covariance between fatty acid composition monitored by GC-FID and dioxin content as teq WHO pg/ g fat. A dioxin range varying from 1.1 to 47.1 pg TEQ-WHO/ g fat using 65 fish meal samples was accessible for model calibration. An optimal multivariate dioxin prediction model was developed based on automatic peak integration, thereby enabling extraction of the area of 140 peaks from the gas chromatogramms. Models were produced employing partial least squares regression (PLS) based upon the duplicate GC-FID run and 46 specific peaks, selected after variable selection from the 140 investigated. The best results were yielded by local pls modelling employing three latent variables based upon the 12 nearest neighbors. For each prediction sample, the neighbors, yielding the 12 smallest sum of squares of differences to the test sample using the 140 peaks, were extracted from the whole calibration set and a local model built using these 12 chromatograms and related dioxin content. Prediction performance was thereafter validated for 10 fully independent samples. The performance of this model, yielded a correlation of 0.85 (r{sup 2}) and a root mean square error of prediction of 2.3 pg PCDD/F TEQWHO/ g fat.

  16. Organization of monitoring of agricultural products in NPP region

    International Nuclear Information System (INIS)

    Panteleev, L.I.; Spirin, E.V.; Sanzharova, N.I.

    1990-01-01

    Problem of organizing chemical and radiation monitoring of agricultural products in NPP region is considered. Attention is paid to monitoring during NPP siting and designing, to monitoring of radioactive contamination of agricultural products under normal NPP operation, emergency situations and decommissioning

  17. Work Element B: 157. Sampling in Fish-Bearing Reaches [Variation in Productivity in Headwater Reaches of the Wenatchee Subbasin], Final Report for PNW Research Station.

    Energy Technology Data Exchange (ETDEWEB)

    Polivka, Karl; Bennett, Rita L. [USDA Forest Service, Pacific Northwest Research Station, Wenatchee, WA

    2009-03-31

    We studied variation in productivity in headwater reaches of the Wenatchee subbasin for multiple field seasons with the objective that we could develop methods for monitoring headwater stream conditions at the subcatchment and stream levels, assign a landscape-scale context via the effects of geoclimatic parameters on biological productivity (macroinvertebrates and fish) and use this information to identify how variability in productivity measured in fishless headwaters is transmitted to fish communities in downstream habitats. In 2008, we addressed this final objective. In collaboration with the University of Alaska Fairbanks we found some broad differences in the production of aquatic macroinvertebrates and in fish abundance across categories that combine the effects of climate and management intensity within the subbasin (ecoregions). From a monitoring standpoint, production of benthic macroinvertebrates was not a good predictor of drifting macroinvertebrates and therefore might be a poor predictor of food resources available to fish. Indeed, there is occasionally a correlation between drifting macroinvertebrate abundance and fish abundance which suggests that headwater-derived resources are important. However, fish in the headwaters appeared to be strongly food-limited and there was no evidence that fishless headwaters provided a consistent subsidy to fish in reaches downstream. Fish abundance and population dynamics in first order headwaters may be linked with similar metrics further down the watershed. The relative strength of local dynamics and inputs into productivity may be constrained or augmented by large-scale biogeoclimatic control. Headwater streams are nested within watersheds, which are in turn nested within ecological subregions; thus, we hypothesized that local effects would not necessarily be mutually exclusive from large-scale influence. To test this we examined the density of primarily salmonid fishes at several spatial and temporal scales

  18. Overview of a comprehensive environmental monitoring and surveillance program: The role of fish and wildlife

    International Nuclear Information System (INIS)

    Gray, R.H.

    1988-05-01

    Concern about the effects of potential releases from nuclear and non-nuclear activities on the US Department of Energy's Hanford Site in southeastern Washington has evolved over four decades into a comprehensive environmental monitoring and surveillance program. The program includes field sampling, and chemical and physical analyses of air, surface and ground water, fish and wildlife, soil, foodstuffs, and natural vegetation. In addition to monitoring radioactivity in fish and wildlife, population numbers of key species are determined, usually during the breeding season. Data from monitoring efforts are used to assess the environmental impacts of Hanford operations and calculate the overall radiological dose to humans onsite, at the Site perimeter, or residing in nearby communities. Chinook salmon spawning in the Columbia River at Hanford has increased in recent years with a concomitant increase in winter nesting activity of bald eagles (Haliaeetus leucocephalus). An elk (Cervus elaphus) herd, established by immigration in 1972, is also increasing. Nesting Canada goose (Branta canadensis) and great blue heron (Ardea herodias), and various other animals, e.g., mule deer (Odocoileus hemionus) and coyotes (Canis latrans) are common. Measured exposure to penetrating radiation and calculated radiation doses to the public are well below applicable regulatory limits

  19. Wigwam River juvenile bull trout and fish habitat monitoring program : 2001 data report

    International Nuclear Information System (INIS)

    Cope, R.S.; Morris, K.J.; Bisset, J.E.

    2002-01-01

    The Wigwam River juvenile bull trout and fish habitat monitoring program is a co-operative initiative of the British Columbia Ministry of Water, Land, and Air Protection and Bonneville Power Administration. The Wigwam River has been characterized as the single most important bull trout spawning stream in the Kootenay Region. This report provides a summary of results obtained during the second year (2001) of the juvenile bull trout enumeration and fish habitat assessment program. This project was commissioned in planning for fish habitat protection and forest development within the upper Wigwam River valley. The broad intent is to develop a better understanding of juvenile bull trout and Westslope cutthroat trout recruitment and the ongoing hydrologic and morphologic processes in the upper Wigwam River, especially as they relate to spawning and rearing habitat quality. Five permanent sampling sites were established August 2000 in the Wigwam river drainage (one site on Bighorn Creek and four sites on the mainstem Wigwam River). At each site, juvenile (0(sup+), 1(sup+) and 2(sup+) age classes) fish densities and stream habitat conditions were measured over two stream meander wavelengths. Bull trout represented 95.1% of the catch and the mean density of juvenile bull trout was estimated to be 20.7 fish/100m(sup 2) (range 0.9 to 24.0 fish/100m(sup 2)). This compares to 17.2 fish/100m(sup 2) (+20%) for the previous year. Fry (0(sup+)) dominated the catch and this was a direct result of juvenile bull trout ecology and habitat partitioning among life history stages. Site selection was biased towards sample sites which favored high bull trout fry capture success. Comparison of fry density estimates replicated across both the preliminary survey (1997) and the current study (Cope and Morris 2001) illustrate the stable nature of these high densities. Bull trout populations have been shown to be extremely susceptible to habitat degradation and over-harvest and are ecologically

  20. Fish welfare assurance system: initial steps to set up an effective tool to safeguard and monitor farmed fish welfare at a company level

    NARCIS (Netherlands)

    Vis, van de J.W.; Poelman, M.; Lambooij, E.; Bégout, M.L.; Pilarczyk, M.

    2012-01-01

    The objective was to take a first step in the development of a process-oriented quality assurance (QA) system for monitoring and safeguarding of fish welfare at a company level. A process-oriented approach is focused on preventing hazards and involves establishment of critical steps in a process

  1. Wigwam River juvenile bull trout and fish habitat monitoring program: 2000 data report; TOPICAL

    International Nuclear Information System (INIS)

    Cope, R.S.; Morris, K.J.

    2001-01-01

    The Wigwam River bull trout (Salvelinus confluentus) and fish habitat monitoring program is a trans-boundary initiative implemented by the British Columbia Ministry of Environment, Lands and Parks (MOE), in cooperation with Bonneville Power Administration (BPA). The Wigwam River is an important fisheries stream located in southeastern British Columbia that supports healthy populations of both bull trout and Westslope cutthroat trout (Figure 1.1). This river has been characterized as the single most important bull trout spawning stream in the Kootenay Region (Baxter and Westover 2000, Cope 1998). In addition, the Wigwam River supports some of the largest Westslope cutthroat trout (Oncorhynchus clarki lewisi) in the Kootenay Region. These fish are highly sought after by anglers (Westover 1999a, 1999b). Bull trout populations have declined in many areas of their range within Montana and throughout the northwest including British Columbia. Bull trout were blue listed as vulnerable in British Columbia by the B.C. Conservation Data Center (Cannings 1993) and although there are many healthy populations of bull trout in the East Kootenays they remain a species of special concern. Bull trout in the United States portion of the Columbia River were listed as threatened in 1998 under the Endangered Species Act by the U.S. Fish and Wildlife Service. The upper Kootenay River is within the Kootenai sub-basin of the Mountain Columbia Province, one of the eleven Eco-provinces that make up the Columbia River Basin. MOE applied for and received funding from BPA to assess and monitor the status of wild, native stocks of bull trout in tributaries to Lake Koocanusa (Libby Reservoir) and the upper Kootenay River. This task is one of many that was undertaken to ''Monitor and Protect Bull Trout for Koocanusa Reservoir'' (BPA Project Number 2000-04-00)

  2. Wigwam River Juvenile Bull Trout and Fish Habitat Monitoring Program : 2002 Data Report.

    Energy Technology Data Exchange (ETDEWEB)

    Cope, R.S. [Westslope Fisheries, Cranbrook, BC, Canada

    2003-03-01

    The Wigwam River bull trout (Salvelinus confluentus) and fish habitat monitoring program is a trans-boundary initiative implemented by the British Columbia Ministry of Water, Land, and Air Protection (MWLAP), in cooperation with Bonneville Power Administration (BPA). The Wigwam River is an important fisheries stream located in southeastern British Columbia that supports healthy populations of both bull trout and Westslope cutthroat trout (Figure 1). This river has been characterized as the single most important bull trout spawning stream in the Kootenay Region (Baxter and Westover 2000, Cope 1998). In addition, the Wigwam River supports some of the largest Westslope cutthroat trout (Oncorhynchus clarki lewisi) in the Kootenay Region. These fish are highly sought after by anglers (Westover 1999a, 1999b). Bull trout populations have declined in many areas of their range within Montana and throughout the northwest including British Columbia. Bull trout were blue listed as vulnerable in British Columbia by the B.C. Conservation Data Center (Cannings 1993) and although there are many healthy populations of bull trout in the East Kootenay they remain a species of special concern. Bull trout in the United States portion of the Columbia River were listed as threatened in 1998 under the Endangered Species Act by the U.S. Fish and Wildlife Service. The upper Kootenay River is within the Kootenai sub-basin of the Mountain Columbia Province, one of the eleven Eco-provinces that make up the Columbia River Basin. MWLAP applied for and received funding from BPA to assess and monitor the status of wild, native stocks of bull trout in tributaries to Lake Koocanusa (Libby Reservoir) and the upper Kootenay River. This task is one of many that were undertaken to ''Monitor and Protect Bull Trout for Koocanusa Reservoir'' (BPA Project Number 2000-04-00).

  3. Ammonia production, excretion, toxicity, and defense in fish: A Review

    Directory of Open Access Journals (Sweden)

    Alex Y K Ip

    2010-10-01

    Full Text Available Many fishes are ammonotelic but some species can detoxify ammonia to glutamine or urea. Certain fish species can accumulate high levels of ammonia in the brain or defense against ammonia toxicity by enhancing the effectiveness of ammonia excretion through active NH4+ transport, manipulation of ambient pH, or reduction in ammonia permeability through the branchial and cutaneous epithelia. Recent reports on ammonia toxicity in mammalian brain reveal the importance of permeation of ammonia through the blood-brain barrier and passages of ammonia and water through transporters in the plasmalemma of brain cells. Additionally, brain ammonia toxicity could be related to the passage of glutamine through the mitochondrial membranes into the mitochondrial matrix. On the other hand, recent reports on ammonia excretion in fish confirm the involvement of Rhesus glycoproteins in the branchial and cutaneous epithelia. Therefore, this review focuses on both the earlier literature and the up-to-date information on the problems and mechanisms concerning the permeation of ammonia, as NH3, NH4+ or proton-neutral nitrogenous compounds, across mitochondrial membranes, the blood-brain barrier, the plasmalemma of neurons, and the branchial and cutaneous epithelia of fish. It also addresses how certain fishes with high ammonia tolerance defend against ammonia toxicity through the regulation of the permeation of ammonia and related nitrogenous compounds through various types of membranes. It is hoped that this review would revive the interests in investigations on the passage of ammonia through the mitochondrial membranes and the blood-brain barrier of ammonotelic fishes and fishes with high brain ammonia-tolerance, respectively.

  4. Microbial and sponge loops modify fish production in phase-shifting coral reefs.

    Science.gov (United States)

    Silveira, Cynthia B; Silva-Lima, Arthur W; Francini-Filho, Ronaldo B; Marques, Jomar S M; Almeida, Marcelo G; Thompson, Cristiane C; Rezende, Carlos E; Paranhos, Rodolfo; Moura, Rodrigo L; Salomon, Paulo S; Thompson, Fabiano L

    2015-10-01

    Shifts from coral to algae dominance of corals reefs have been correlated to fish biomass loss and increased microbial metabolism. Here we investigated reef benthic and planktonic primary production, benthic dissolved organic carbon (DOC) release and bacterial growth efficiency in the Abrolhos Bank, South Atlantic. Benthic DOC release rates are higher while water column bacterial growth efficiency is lower at impacted reefs. A trophic model based on the benthic and planktonic primary production was able to predict the observed relative fish biomass in healthy reefs. In contrast, in impacted reefs, the observed omnivorous fish biomass is higher, while that of the herbivorous/coralivorous fish is lower than predicted by the primary production-based model. Incorporating recycling of benthic-derived carbon in the model through microbial and sponge loops explains the difference and predicts the relative fish biomass in both reef types. Increased benthic carbon release rates and bacterial carbon metabolism, but decreased bacterial growth efficiency could lead to carbon losses through respiration and account for the uncoupling of benthic and fish production in phase-shifting reefs. Carbon recycling by microbial and sponge loops seems to promote an increase of small-bodied fish productivity in phase-shifting coral reefs. © 2015 Society for Applied Microbiology and John Wiley & Sons Ltd.

  5. Effects of fishing disturbance on benthic communities and secondary production within an intensively fished area

    NARCIS (Netherlands)

    Reiss, H.; Greenstreet, S.P.R.; Sieben, K.; Ehrich, S.; Piet, G.J.; Quirijns, F.; Wolff, W.J.; Kroncke, I.

    2009-01-01

    Demersal fishing alters seabed habitats and affects the structure and functioning of benthic invertebrate communities. At a critical level of disturbance, such communities may approach an equilibrium disturbed state in which a further increase in disturbance has little additional impact. Such

  6. Monitoring translocations by M-FISH and three-color FISH painting techniques. A study of two radiotherapy patients

    International Nuclear Information System (INIS)

    Pouzoulet, F.; Roch-Lefevre, S.; Giraudet, AL.

    2007-01-01

    To compare translocation rate using either M-FISH or FISH-3 in two patients treated for head and neck cancer, with a view to retrospective dosimetry. Translocation analysis was performed on peripheral blood lymphocyte cultures from blood samples taken at different times during the radiotherapy (0 Gy, 12 Gy and 50 Gy) and a few months after the end of the treatment (follow-up). Estimated translocation yield varied according to the FISH technique used. At 50 Gy and follow-up points, the translocation yields were higher with FISH-3 than with M-FISH. This difference can be attributed to three events. First, an increase in complex aberrations was observed for 50 Gy and follow-up points compared with 0 Gy and 12 Gy points. Second, at the end of treatment for patient A, involvement of chromosomes 2, 4, 12 in translocations was less than expected according to the Lucas formula. Third, a clone bearing a translocation involving a FISH-3 painted chromosome was detected. More translocations were detected with M-FISH than with FISH-3, and so M-FISH is expected to improve the accuracy of chromosome aberration analyses in some situations. (author)

  7. Impact of Monsoon to Aquatic Productivity and Fish Landing at Pesawaran Regency Waters

    Science.gov (United States)

    Kunarso; Zainuri, Muhammad; Ario, Raden; Munandar, Bayu; Prayogi, Harmon

    2018-02-01

    Monsoon variability influences the productivity processes in the ocean and has different responses in each waters. Furthermore, variability of marine productivity affects to the fisheries resources fluctuation. This research has conducted using descriptive method to investigate the consequences of monsoon variability to aquatic productivity, sea surface temperature (SST), fish catches, and fish season periods at Pesawaran Regency waters, Lampung. Variability of aquatic productivity was determined based on chlorophyll-a indicator from MODIS satellite images. Monsoon variability was governed based on wind parameters and fish catches from fish landing data of Pesawaran fish market. The result showed that monsoon variability had affected to aquatic productivity, SST, and fish catches at Pesawaran Regency waters. Maximum wind speed and lowest SST occurred twice in a year, December to March and August to October, which the peaks were on January (2.55 m/s of wind speed and 29.66°C of SST) and September (2.44 m/s of wind speed and 29.06°C of SST). Also, Maximum aquatic productivity happened on January to March and July to September, which it was arisen simultaneously with maximum wind speed and the peaks was 0.74 mg/m3 and 0.78 mg/m3, on February and August respectively. The data showed that fish catches decreased along with strong wind speed and low SST. However, when weak wind speed and high SST occurred, fish catches increased. The correlation between Catch per Unit Effort (CPUE) with SST, wind speed, and chlorophyll-a was at value 0.76, -0.67, and -0.70, respectively. The high rate fish catches in Pesawaran emerged on March-May and September-December.

  8. Concentrations of elements in fish fillets, fish muscle plugs, and crayfish from the 2011 Missouri Department of Conservation general contaminant monitoring program

    Science.gov (United States)

    May, Thomas W.; Walther, Michael J.; Brumbaugh, William G.; McKee, Michael J.

    2013-01-01

    This report presents the results of a contaminant monitoring survey conducted annually by the Missouri Department of Conservation to examine the levels of selected elemental contaminants in fish fillets, fish muscle plugs, and crayfish. Fillet samples of yellow bullhead (Ameiurus natalis), golden redhorse (Moxostoma erythrurum), longear sunfish (Lepomis megalotis), and channel catfish (Ictalurus punctatus) were collected from six sites as part of the Missouri Department of Conservation’s Fish Contaminant Monitoring Program. Fish dorsal muscle plugs were collected from largemouth bass (Micropterus salmoides) at eight of the sites, and crayfish from two sites. Following preparation and analysis of the samples, highlights of the data were as follows: cadmium and lead residues were most elevated in crayfish tissue samples from the Big River at Cherokee Landing, with 1 to 8 micrograms per gram dry weight and 22 to 45 micrograms per gram dry weight, respectively. Some dorsal muscle plugs from largemouth bass collected from Clearwater Lake, Lake St. Louis, Noblett Lake, Hazel Creek Lake, and Harrison County Lake contained mercury residues (1.7 to 4.7 micrograms per gram dry weight) that exceeded the U.S. Environmental Protection Agency Water Quality Criterion of 1.5 micrograms per gram dry weight of fish tissue (equivalent to 0.30 micrograms per gram wet weight).

  9. Resource partitioning within major bottom fish species in a highly productive upwelling ecosystem

    Science.gov (United States)

    Abdellaoui, Souad; El Halouani, Hassan; Tai, Imane; Masski, Hicham

    2017-09-01

    The Saharan Bank (21-26°N) is a wide subtropical continental shelf and a highly productive upwelling ecosystem. The bottom communities are dominated by octopus and sparid fish, which are the main targets of bottom-trawl fishing fleets. To investigate resource partitioning within the bottom fish community, adult fish from 14 of the most abundant species were investigated for stomach content analysis. Samples were collected during two periods: October 2003 and May 2007. The diet of the analysed species showed more variation between periods than between size classes, suggesting that temporal or spatial variability in prey availability appears to play a significant role in their diet. Multivariate analysis and subsequent clustering led to a grouping of the species within five trophic guilds. Two species were fish feeders, and the others mainly fed on benthic invertebrates, where epibenthic crustaceans, lamellibranchs and fish were the most important groups in defining trophic guilds. We found that the studied species had a high rate of overlapping spatial distributions and overlapping trophic niches. In this highly productive upwelling ecosystem, where food resources may not be a limiting factor, inter-specific competition did not appear to be an important factor in structuring bottom fish communities. For the species that showed differences in the proportions of prey categories in comparison with other ecosystems, the rise of the proportion of epibenthic crustaceans in their diet was a common feature; a possible consequence of the benthic productivity of this highly productive upwelling ecosystem.

  10. Fish Research Project Oregon; Umatilla Hatchery Monitoring and Evaluation, 1993-1994 Annual Report.

    Energy Technology Data Exchange (ETDEWEB)

    Hayes, Michael C.; Onjukka, Sam T.; Focher, Shannon M. (Oregon Department of Fish and Wildlife, Portland, OR)

    1995-01-01

    This report covers the first three years of comprehensive monitoring and evaluation of the Umatilla Hatchery. Because the hatchery and the evaluation study and the fish health monitoring investigations are in the early stages of implementation, much of the information contained in this report is preliminary. The majority of the data that is crucial for evaluating the success of the hatchery program, the data on post-release performance and survival, is yet unavailable. In addition, several years of data are necessary to make conclusions about rearing performance at Umatilla Hatchery. The conclusions drawn in this report should be viewed as preliminary and should be used in conjunction with additional information as it becomes available.

  11. Utilization of fish meal and fish oil for production of Cryptococcus sp. MTCC 5455 lipase and hydrolysis of polyurethane thereof.

    Science.gov (United States)

    Thirunavukarasu, K; Purushothaman, S; Gowthaman, M K; Nakajima-Kambe, T; Rose, C; Kamini, N R

    2015-09-01

    Fish meal has been used as an additional nitrogen source and fish oil as inducer for the growth and production of lipase from Cryptococcus sp. MTCC 5455. A response surface design illustrated that the optimum factors influencing lipase production were fish meal, 1.5 %, w/v, Na2HPO4, 0.2 %, w/v, yeast extract, 0.25 %, w/v and sardine oil, 2.0 %, w/v with an activity of 71.23 U/mL at 96 h and 25 °C, which was 48.39 % higher than the conventional one-factor-at-a-time method. The crude concentrated enzyme hydrolyzed polyurethane (PUR) efficiently and hydrolysis was 94 % at 30 °C and 96 h. The products, diethylene glycol and adipic acid were quantified by HPLC and scanning electron microscopic studies of the degraded polymer showed significant increase in size of the holes from 24 to 72 h of incubation. Hydrolysis of PUR within 96 h makes the lipase novel for disposal of PUR and provides an innovative solution to the problems created by plastic wastes.

  12. A Global Analysis of the Relationship between Farmed Seaweed Production and Herbivorous Fish Catch.

    Directory of Open Access Journals (Sweden)

    E James Hehre

    Full Text Available Globally, farmed seaweed production is expanding rapidly in shallow marine habitats. While seaweed farming provides vital income to millions of artisanal farmers, it can negatively impact shallow coral reef and seagrass habitats. However, seaweed farming may also potentially provide food subsidies for herbivorous reef fish such as the Siganidae, a valuable target family, resulting in increased catch. Comparisons of reef fish landings across the central Philippines revealed that the catch of siganids was positively correlated to farmed seaweed production whilst negatively correlated to total reef fish catch over the same period of time. We tested the generality of this pattern by analysing seaweed production, siganid catch, and reef fish catch for six major seaweed-producing countries in the tropics. We hypothesized that increased seaweed production would correspond with increased catch of siganids but not other reef fish species. Analysis of the global data showed a positive correlation between farmed seaweeds and siganids in Southeast Asia (Indonesia, Malaysia, and the Philippines but not Africa (Tanzania and Zanzibar, or the Western Pacific (Fiji. In Southeast Asia, siganid catch increased disproportionately faster with seaweed production than did reef fish catch. Low continuity, sporadic production and smaller volumes of seaweed farming may explain the differences.

  13. A Global Analysis of the Relationship between Farmed Seaweed Production and Herbivorous Fish Catch.

    Science.gov (United States)

    Hehre, E James; Meeuwig, Jessica J

    2016-01-01

    Globally, farmed seaweed production is expanding rapidly in shallow marine habitats. While seaweed farming provides vital income to millions of artisanal farmers, it can negatively impact shallow coral reef and seagrass habitats. However, seaweed farming may also potentially provide food subsidies for herbivorous reef fish such as the Siganidae, a valuable target family, resulting in increased catch. Comparisons of reef fish landings across the central Philippines revealed that the catch of siganids was positively correlated to farmed seaweed production whilst negatively correlated to total reef fish catch over the same period of time. We tested the generality of this pattern by analysing seaweed production, siganid catch, and reef fish catch for six major seaweed-producing countries in the tropics. We hypothesized that increased seaweed production would correspond with increased catch of siganids but not other reef fish species. Analysis of the global data showed a positive correlation between farmed seaweeds and siganids in Southeast Asia (Indonesia, Malaysia, and the Philippines) but not Africa (Tanzania and Zanzibar), or the Western Pacific (Fiji). In Southeast Asia, siganid catch increased disproportionately faster with seaweed production than did reef fish catch. Low continuity, sporadic production and smaller volumes of seaweed farming may explain the differences.

  14. Discovery and characterization of natural products that act as pheromones in fish.

    Science.gov (United States)

    Li, Ke; Buchinger, Tyler J; Li, Weiming

    2018-06-20

    Covering: up to 2018 Fish use a diverse collection of molecules to communicate with conspecifics. Since Karlson and Lüscher termed these molecules 'pheromones', chemists and biologists have joined efforts to characterize their structures and functions. In particular, the understanding of insect pheromones developed at a rapid pace, set, in part, by the use of bioassay-guided fractionation and natural product chemistry. Research on vertebrate pheromones, however, has progressed more slowly. Initially, biologists characterized fish pheromones by screening commercially available compounds suspected to act as pheromones based upon their physiological function. Such biology-driven screening has proven a productive approach to studying pheromones in fish. However, the many functions of fish pheromones and diverse metabolites that fish release make predicting pheromone identity difficult and necessitate approaches led by chemistry. Indeed, the few cases in which pheromone identification was led by natural product chemistry indicated novel or otherwise unpredicted compounds act as pheromones. Here, we provide a brief review of the approaches to identifying pheromones, placing particular emphasis on the promise of using natural product chemistry together with assays of biological activity. Several case studies illustrate bioassay-guided fractionation as an approach to pheromone identification in fish and the unexpected diversity of pheromone structures discovered by natural product chemistry. With recent advances in natural product chemistry, bioassay-guided fractionation is likely to unveil an even broader collection of pheromone structures and enable research that spans across disciplines.

  15. Possible applications of modern fish larviculture technology to ornamental fish production

    OpenAIRE

    Dhert, P.; Lim, L.C.; Candreva, P.; Van Duffel, H.; Sorgeloos, P.

    1997-01-01

    There has been rapid development in the marine foodfish larviculture technology in Europe since the early eighties, especially in the flat fish, turbot and halibut, and the bass and bream species. The most significant improvements in the eighties were the introduction of light control, artificial reproduction techniques, appropriate water treatment and the use of rotifers and Artemia nauplii of specific sizes and in the late eighties and early nineties the quality enhancement of live food org...

  16. Phytoplankton productivity in newly dug fish ponds within Lake ...

    African Journals Online (AJOL)

    The declining Lake Victoria fisheries resource led to a growing recognition of aquaculture as a source of livelihood to riparian communities. Finger ponds speculated to naturally stock fish during flooding and retain them during dry seasons were introduced within the lake's wetlands. In order to develop a

  17. Monitoring Spawning Activity in a Southern California Marine Protected Area Using Molecular Identification of Fish Eggs.

    Directory of Open Access Journals (Sweden)

    Alice E Harada

    Full Text Available In order to protect the diverse ecosystems of coastal California, a series of marine protected areas (MPAs have been established. The ability of these MPAs to preserve and potentially enhance marine resources can only be assessed if these habitats are monitored through time. This study establishes a baseline for monitoring the spawning activity of fish in the MPAs adjacent to Scripps Institution of Oceanography (La Jolla, CA, USA by sampling fish eggs from the plankton. Using vertical plankton net tows, 266 collections were made from the Scripps Pier between 23 August 2012 and 28 August 2014; a total of 21,269 eggs were obtained. Eggs were identified using DNA barcoding: the COI or 16S rRNA gene was amplified from individual eggs and sequenced. All eggs that were successfully sequenced could be identified from a database of molecular barcodes of California fish species, resulting in species-level identification of 13,249 eggs. Additionally, a surface transport model of coastal circulation driven by current maps from high frequency radar was used to construct probability maps that estimate spawning locations that gave rise to the collected eggs. These maps indicated that currents usually come from the north but water parcels tend to be retained within the MPA; eggs sampled at the Scripps Pier have a high probability of having been spawned within the MPA. The surface transport model also suggests that although larvae have a high probability of being retained within the MPA, there is also significant spillover into nearby areas outside the MPA. This study provides an important baseline for addressing the extent to which spawning patterns of coastal California species may be affected by future changes in the ocean environment.

  18. Monitoring Spawning Activity in a Southern California Marine Protected Area Using Molecular Identification of Fish Eggs.

    Science.gov (United States)

    Harada, Alice E; Lindgren, Elise A; Hermsmeier, Maiko C; Rogowski, Peter A; Terrill, Eric; Burton, Ronald S

    2015-01-01

    In order to protect the diverse ecosystems of coastal California, a series of marine protected areas (MPAs) have been established. The ability of these MPAs to preserve and potentially enhance marine resources can only be assessed if these habitats are monitored through time. This study establishes a baseline for monitoring the spawning activity of fish in the MPAs adjacent to Scripps Institution of Oceanography (La Jolla, CA, USA) by sampling fish eggs from the plankton. Using vertical plankton net tows, 266 collections were made from the Scripps Pier between 23 August 2012 and 28 August 2014; a total of 21,269 eggs were obtained. Eggs were identified using DNA barcoding: the COI or 16S rRNA gene was amplified from individual eggs and sequenced. All eggs that were successfully sequenced could be identified from a database of molecular barcodes of California fish species, resulting in species-level identification of 13,249 eggs. Additionally, a surface transport model of coastal circulation driven by current maps from high frequency radar was used to construct probability maps that estimate spawning locations that gave rise to the collected eggs. These maps indicated that currents usually come from the north but water parcels tend to be retained within the MPA; eggs sampled at the Scripps Pier have a high probability of having been spawned within the MPA. The surface transport model also suggests that although larvae have a high probability of being retained within the MPA, there is also significant spillover into nearby areas outside the MPA. This study provides an important baseline for addressing the extent to which spawning patterns of coastal California species may be affected by future changes in the ocean environment.

  19. Effects of fish farm waste on Posidonia oceanica meadows: Synthesis and provision of monitoring and management tools

    Energy Technology Data Exchange (ETDEWEB)

    Holmer, Marianne [Institute of Biology, University of Southern Denmark, Campusvej 55, DK-5230 Odense M (Denmark)], E-mail: holmer@biology.sdu.dk; Argyrou, Marina [Marine Environment Division, Department of Fisheries and Marine Research, Ministry of Agriculture, Natural Resources and Environment, 101 Bethleem Street, 1416 Nicosia (Cyprus); Dalsgaard, Tage [Department of Marine Ecology, National Environmental Research Institute, Aarhus University, Vejlsovej 25, P.O. Box 314, DK-8600 Silkeborg (Denmark); Danovaro, Roberto [Department of Marine Science, Polytechnic University of Marche, Via Brecce Bianche, 60131 Ancona (Italy); Diaz-Almela, Elena; Duarte, Carlos M. [IMEDEA (CSIC-UIB), Miquel Marques 21, 07190 Esporles (Illes Balears) (Spain); Frederiksen, Morten [Institute of Biology, University of Southern Denmark, Campusvej 55, DK-5230 Odense M (Denmark); Grau, Antoni [Direccio General de Pesca, Conselleria d' Agricultura i Pesca, Govern de les Illes Balears, Foners 10, 07006 Palma de Mallorca (Illes Balears) (Spain); Karakassis, Ioannis [Marine Ecology Laboratory, Biology Department, University of Crete, Heraklion, 71409 Crete (Greece); Marba, Nuria [IMEDEA (CSIC-UIB), Miquel Marques 21, 07190 Esporles (Illes Balears) (Spain); Mirto, Simone [Institute for the Marine Coastal Environment, National Council of Research, Spianata S. Raineri, 86, 98122 Messina (Italy); Perez, Marta [Departament d' Ecologia, Universitat de Barcelona, Av. Diagonal 645, 08028 Barcelona (Spain); Pusceddu, Antonio [Department of Marine Science, Polytechnic University of Marche, Via Brecce Bianche, 60131 Ancona (Italy); Tsapakis, Manolis [Institute of Oceanography, Hellenic Center for Marine Research, P.O. Box 2214, GR 71003 Heraklion, Crete (Greece)

    2008-09-15

    This paper provides a synthesis of the EU project MedVeg addressing the fate of nutrients released from fish farming in the Mediterranean with particular focus on the endemic seagrass Posidonia oceanica habitat. The objectives were to identify the main drivers of seagrass decline linked to fish farming and to provide sensitive indicators of environmental change, which can be used for monitoring purposes. The sedimentation of waste particles in the farm vicinities emerges as the main driver of benthic deterioration, such as accumulation of organic matter, sediment anoxia as well as seagrass decline. The effects of fish farming on P. oceanica meadows are diverse and complex and detected through various metrics and indicators. A safety distance of 400 m is suggested for management of P. oceanica near fish farms followed by establishment of permanent seagrass plots revisited annually for monitoring the health of the meadows.

  20. Effects of fish farm waste on Posidonia oceanica meadows: Synthesis and provision of monitoring and management tools

    International Nuclear Information System (INIS)

    Holmer, Marianne; Argyrou, Marina; Dalsgaard, Tage; Danovaro, Roberto; Diaz-Almela, Elena; Duarte, Carlos M.; Frederiksen, Morten; Grau, Antoni; Karakassis, Ioannis; Marba, Nuria; Mirto, Simone; Perez, Marta; Pusceddu, Antonio; Tsapakis, Manolis

    2008-01-01

    This paper provides a synthesis of the EU project MedVeg addressing the fate of nutrients released from fish farming in the Mediterranean with particular focus on the endemic seagrass Posidonia oceanica habitat. The objectives were to identify the main drivers of seagrass decline linked to fish farming and to provide sensitive indicators of environmental change, which can be used for monitoring purposes. The sedimentation of waste particles in the farm vicinities emerges as the main driver of benthic deterioration, such as accumulation of organic matter, sediment anoxia as well as seagrass decline. The effects of fish farming on P. oceanica meadows are diverse and complex and detected through various metrics and indicators. A safety distance of 400 m is suggested for management of P. oceanica near fish farms followed by establishment of permanent seagrass plots revisited annually for monitoring the health of the meadows

  1. Borehole radar for oil production monitoring

    NARCIS (Netherlands)

    Miorali, M.

    2012-01-01

    The area of smart well technology, or closed-loop reservoir management, aims at enhancing oil recovery through a combination of monitoring and control. Monitoring is performed with a wide range of sensors deployed downhole or at the surface. These sensors allow for capturing changes in the reservoir

  2. SUSTAINABLE TILAPIA PRODUCTION IN A BACKYARD SYSTEM FOR RURAL AREAS USING FISH BY-PRODUCTS IN FORMULATED DIETS

    Directory of Open Access Journals (Sweden)

    Servando Rueda Lopez

    2013-12-01

    Full Text Available The aim of the present study was to demonstrate the feasibility of producing Tilapia (Oreochromis niloticuss, L. with formulated diets containing acid fish silage made with Hancock (Pterigoplichthys multiradiatus by-products in substitution of fishmeal. Thus four treatments containing increasing levels (0, 5, 10 and 15% of acid fish silage to substitute fishmeal were used to feed tilapia juveniles in triplicate groups (average 1.5±0.7 g and 4.3±1.0 cm.  Fish silage was prepared by adding citric and phosphoric acids at 2.6% each resulting in a liquefaction of the chop by-product mixture. After two weeks, the diets were prepared to contain 32-35% protein content. After 50 days of experimental period a total growth increase up to 827% was observed without significant differences among treatments. A specific growth rate from 3.70 to 4.10 and a survival rate from 96 to 99% was observed.  The cost analysis shows a saving on production cost up to 23.87% using the highest incorporation level of fish silage. The use of Aquaculture Recirculation System made with components normally found in a hardware store in rural or semi urban areas is discussed. It is concluded that fish offal shows a promising activity that favors the increase in fish protein production to resolve the demand of cheap protein.

  3. Can citizen science contribute to fish assemblages monitoring in understudied areas? The case study of Tunisian marine protected areas

    Science.gov (United States)

    Ben Lamine, Emna; Di Franco, Antonio; Romdhane, Mohamed Salah; Francour, Patrice

    2018-01-01

    Resource monitoring is a key issue in ecosystem management especially for marine protected areas (MPAs), where information on the composition and structure of fish assemblages is crucial to design a sound management plan. Data on fish assemblage are usually collected using Underwater Visual Censuses (UVC). However, fish assemblages monitoring in MPAs usually calls for considerable resources in terms of costs, time and technical/scientific skills. Financial resources and trained scientific divers may, however, not be available in certain geographical areas, that are thus understudied. Therefore, involving citizen volunteer divers in fish assemblage monitoring and adopting easy-to-use underwater visual census methods could be an effective way to collect crucial data. Citizen science can be used only if it can provide information that is consistent with that collected using standard scientific monitoring. Here, we aim to: 1) compare the consistency of results from a Standard scientific UVC (S-UVC) and an Easy-to-use UVC (E-UVC) method in assessing fish assemblage spatial variability, and 2) test the consistency of data collected by Scientific Divers (SD) and Scientifically-Trained Volunteer divers (STV), using E-UVC. We used, in two consecutive years, three Tunisian future Marine Protected Areas (MPAs) and adjacent areas as case studies. E-UVC and S-UVC data were consistent in highlighting the same spatial patterns for the three MPAs (between MPAs and, inside and outside each one). No significant difference was recorded between data collected by SD or STV. Our results suggest that E-UVC can provide information representing simplified proxies for describing fish assemblages and can therefore be a valuable tool for fish monitoring by citizen divers in understudied areas. This evidence could foster citizen science as an effective tool to raise environmental awareness and involve stakeholders in resource management.

  4. Estimating exposure of piscivorous birds and sport fish to mercury in California lakes using prey fish monitoring: a predictive tool for managers

    Science.gov (United States)

    Ackerman, Joshua T.; Hartman, C. Alex; Eagles-Smith, Collin A.; Herzog, Mark P.; Davison, Jay; Ichikawa, Gary; Bonnema, Autumn

    2015-01-01

    Numerous water bodies in California are listed under the Clean Water Act as being impaired due to mercury (Hg) contamination. The Surface Water Ambient Monitoring Program (SWAMP), via the Bioaccumulation Oversight Group (BOG), has recently completed statewide surveys of contaminants in sport fish tissue from more than 250 lakes and rivers in California and throughout coastal waters. This effort focused on human health issues but did not include beneficial uses by wildlife. Many piscivorous birds such as grebes, terns, cormorants, and mergansers eat fish smaller than those that were sampled by BOG, and sport fish Hg concentrations are not always indicative of wildlife exposure to Hg; therefore, the BOG surveys could not address whether wildlife were at risk due to Hg-induced reproductive impairment in these lakes.

  5. Design of Fishing Boat for Pelabuhanratu Fishermen as One of Effort to Increase Production of Capture Fisheries

    Science.gov (United States)

    Nur, Iswadi; Joko Suranto, Purwo

    2018-02-01

    Design of fishing boat for Pelabuhanratu fisherman as one of effort to increase production of capture fisheries. The fishing boat should be proper for the characteristic of its service area, as; capacity of fishing boat up to 60 GT, the fishing boat has minimum 6 fish holds and location of fish hold in the middle body, the fishing boat hull has the bilge keel plate, and the material of hull fishing boat to be made of wooden, steel, aluminium, or fiberglass. Main dimesion of fishing boat is Length Over All = 25.436 m, Breadth = 4.55 m, Draft = 1.6 m, Speed = 12.5 knots. The research had been known every thing that will be supporting the production of capture fisheries like ; amount of fish production = 25.030 ton per day, the fishing port capacity approximately 268.957GT per day, the area of fishing port industry had not completed, therefore all data research result less than standard of Oceanic Fising Port. So Pelabuhanratu National Fishing Port can not be changed to Oceanic Fishing Port.

  6. Deterioration and shelf-life extension of fish and fishery products by modified atmosphere packaging

    Directory of Open Access Journals (Sweden)

    Payap Masniyom

    2011-04-01

    Full Text Available Fish and fishery products have been recognized as a nutrition source due to their high protein content. Moreover, theycontain considerable amount of unsaturated fatty acids, especially omega-3 fatty acids, which are regarded as preventivecompounds. However, shelf-life of seafood is limited by biochemical and microbiological changes. Modified atmospherepackaging (MAP is widely used for minimally processed fishery products including fresh meat for retarding microbial growthand enzymatic spoilage. CO2, O2, and N2 are most often used in MAP. CO2 enriched atmosphere inhibits the autolyticdegradation of fish muscle during storage. However, high levels of CO2 negatively affect product quality, especially by increasingdrip loss and altering texture. Development of satisfactory methods for shelf-life extension that ensure qualitymaintenance of products with minimum loss has drawn the attention of food technologists. The application of MAP andcombination process in seafood is a promising preservation method to extend the shelf-life of fish and fishery products.

  7. Fish production and some traits of meat quality in rainbow trout (Oncorhynchus mykiss farmed in different production systems

    Directory of Open Access Journals (Sweden)

    St. Stoyanova

    2016-12-01

    Full Text Available Abstract. The rainbow trout (Oncorhynchus mykiss, an important species in Bulgarian aquaculture, is farmed in different production systems as raceways, net cages etc. The aim of the present study was to evaluate the effect of two different rearing systems on fish production, survival rate, meat chemical, mineral composition and farming economic efficiency of culticated rainbow trout (Oncorhynchus mykiss. The information from a survey on fish production and economic efficiency traits was collected from two national rainbow trout farms using the two commonest fish farming systems: in raceways, Happy Fish Ltd fish farm and in net cages, Forest Group Ltd fish farm. The average individual weight gain (g, total weight gain (kg, feed conversion ratio, production costs of 1 kg fish and the economic efficiency coefficients were determined for the two studied fish farms. The final live weight of rainbow trout in net cages was 0.30 kg vs 0.35 kg in raceways. The average individual weight gain was higher in raceways farming system (0.30 kg than in net cages farm (0.26 kg. The mortality rate of fish in raceways was considerably lower: only 1% as compared to that in net cages (4%. The feed conversion ratio at the end of the experiment showed identical values for trout in both farms 1.01. The meat water content of fish reared in raceways and net cages was 77.46±0.65% and 74.52±0.52% respectively (P≤0.01.The protein content of fish meat was higher in fish farmed in net cages 18.84±0.29% as compared to fish cultivated in raceways 17.60±0.49% (P 0.05. Meat fat content of rainbow trout, reared in the net cage system was also considerably higher (5.26±0.30% than the respective parameter in fish farmed in ponds (3.60±0.15% (P≤0.001. The content of Ca and P was higher in rainbow trouts reared in raceways (138.96±1.12 mg.kg and 2844.32±39.31 mg.kg 1 -1 -1 compared with the values of these parameters of fish in net cages (134.46±1.96 mg.kg and 2690.31±42

  8. The Potential of Biodiesel Production derived from Fish Waste

    Science.gov (United States)

    Farzana Samat, Amira; Amirah Safiah Muhamad, Nor; Rasib, Nur Aziera Abd; Hassan, Siti Aminah Mohd; Sohaimi, Khairunissa Syairah Ahmad; Izzati Iberahim, Nur

    2018-03-01

    Petroleum based diesel is one of the largest greenhouse emitters in the worlds based on its contribution to more likely of all carbon, methane and other greenhouse emissions. Besides, the depletion of fossil fuel that indirectly increased its price has force the global oil industry not to be so dependent on the fossil fuel but instead start focusing on alternative sources. Biodiesel is recognized as a clean alternative fuel or as a fuel additive to reduce pollutant from combustion equipment. In this study, the discarded parts of mixed marine fish species were used as the raw material to produce biodiesel. Marine fish oil was extracted from the discarded part of fish and if refined through a series of pretreatment process. The refined marine fish oil undergoes esterification process to reduce the amount of free fatty acid. The oil was then transesterified with methanol and sodium hydroxide as an alkaline catalyst that will speed up the conversion of oil to methyl ester. The three process parameters considered for this study were reaction time, reaction temperature and methanol to oil molar ratio. Biodiesel obtained was then analyzed using gas chromatography (GC). Statistical analyses were performed using SPSS software. The data obtained was analyzed by using one way analysis of variance (ANOVA) repeated measure. The results obtained showed that the conversion of FAME yield is the highest at reaction time 180 minutes, reaction temperature 60°C and methanol to oil molar ratio at 15:1 with FAME yield 80.16%, 80.03% and 80.39%. Thus, it can be concluded that the conversion of biodiesel increased as the reaction time, temperature and

  9. Mackerel biodiesel production from the wastewater containing fish oil

    International Nuclear Information System (INIS)

    Wu, Y.P.; Huang, H.M.; Lin, Y.F.; Huang, W.D.; Huang, Y.J.

    2014-01-01

    Marine fish such as mackerel are important for coastal fisheries in Taiwan. Nearly 60,000 tons of mackerel are produced in Suao, I-lan, Taiwan every year. In this study, oil from the discarded parts of mackerel fish contained in wastewater stream were used as the raw material to produce biodiesel through transesterification reaction. The major fuel properties of MB (mackerel biodiesel), including the iodine value, dynamic viscosity, flash point, and heat value, were determined and compared with sunflower seed oil methyl ester (SFM), JCB (Jatropha curcas biodiesel), and premium diesel (D). MB had a higher iodine value, dynamic viscosity, density, and flash point, but a lower heat value, than did D. MB was also used as fuel in a regular diesel engine to verify its emission characteristics. The MB fuel used for exhaust emission test included pure MB (MB100) and a 20% MB blend with premium diesel (MB20). The exhaust emission of MB was also compared with the exhaust emissions of D and JCB. The results showed that MB20 provided a significant reduction in NO, NO x , and SO 2 emissions under varied engine loads, and required no engine modification. - Highlights: • Biodiesel was produced from wastewater containing mackerel fish oil. • Mackerel biodiesel is compared with Jatropha biodiesel and sunflower seed biodiesel. • MBE (mackerel biodiesel) was found to contain higher amount of unsaturated fatty acids. • Mackerel biodiesel, diesel, and Jatropha biodiesel emissions are compared

  10. Alternative fish feed production from waste chicken feathers

    Directory of Open Access Journals (Sweden)

    Sri Jumini

    2017-08-01

    Full Text Available In this This devotion has been done to provide education and training of the utilization of waste chicken manure, making flour chicken feathers as a fish feed alternative, that can overcome some of the problems that waste chicken feathers from the center cutting broiler chickens in the village Krasak enough, it causes pollution, and not used optimally; Low public awareness of awareness of environmental pollution; the lack of public knowledge about the utilization of waste chicken feathers, and processing technology, as well as to address the needs of fish feed more expensive, need alternative feed ingredients. This service program has provided insight to the public about waste chicken feathers so that it can be used as a new entrepreneurial startups. To achieve these objectives have been done of activity as follows: 1 Provide counseling and understanding of the community will be a negative impact on the environment of waste chicken feathers. 2 Provide counseling utilization of waste chicken feathers for people in nearby farms. 3 Make a chicken feather meal of chicken feather waste as an alternative fish feed to improve digestibility of chicken feathers. 3 The formation of the group for increasing the economic income of the family. This service activities program runs quite well with demonstrated some activity, namely: 1 Change Behavior Society (knowledge transfer; 2 Chicken Feather Extension Waste Utilization; 3 Making Unit Waste Chicken Feathers; 4 Establishment of New Business of Diversified Waste Chicken Feathers.

  11. STARCH/PULP-FIBER BASED PACKAGING FOAMS AND CAST FILMS CONTAINING ALASKAN FISH BY-PRODUCTS (WASTE)

    OpenAIRE

    Syed H. Imam; Bor-Sen Chiou; Delilah Woods; Justin Shey; Gregory M. Glenn; William J. Orts; Rajnesh Narayan; Robert J. Avena-Bustillos; Tara H. McHugh; Alberto Pantoja; Peter J. Bechtel

    2008-01-01

    Baked starch/pulp foams were prepared from formulations containing zero to 25 weight percent of processed Alaskan fish by-products that consisted mostly of salmon heads, pollock heads, and pollock frames (bones and associated remains produced in the filleting operation). Fish by-products thermoformed well along with starch and pulp fiber, and the foam product (panels) exhibited useful mechanical properties. Foams with all three fish by-products, ranging between 10 and 15 wt%, showed the highe...

  12. Mercury in freshwater fish of northeast North America--a geographic perspective based on fish tissue monitoring databases.

    Science.gov (United States)

    Kamman, Neil C; Burgess, Neil M; Driscoll, Charles T; Simonin, Howard A; Goodale, Wing; Linehan, Janice; Estabrook, Robert; Hutcheson, Michael; Major, Andrew; Scheuhammer, Anton M; Scruton, David A

    2005-03-01

    As part of an initiative to assemble and synthesize mercury (Hg) data from environmental matrices across northeastern North America, we analyzed a large dataset comprised of 15,305 records of fish tissue Hg data from 24 studies from New York State to Newfoundland. These data were summarized to provide mean Hg concentrations for 40 fish species and associated families. Detailed analyses were carried out using data for 13 species. Hg in fishes varied by geographic area, waterbody type, and waterbody. The four species with the highest mean Hg concentrations were muskellunge (Esox masquinongy), walleye (Sander vitreus), white perch (Morone americana), and northern pike (Esox luscius). Several species displayed elevated Hg concentrations in reservoirs, relative to lakes and rivers. Normalized deviations from mean tissue levels for yellow perch (Perca flavescens) and brook trout (Salvelinus fontinalis) were mapped, illustrating how Hg concentrations in these species varied across northeastern North America. Certain geographic regions showed generally below or above-average Hg concentrations in fish, while significant heterogeneity was evident across the landscape. The proportion of waterbodies exhibiting exceedances of USEPA's criterion for fish methylmercury ranged from 14% for standard-length brook trout fillets to 42% for standard-length yellow perch fillets. A preliminary correlation analysis showed that fish Hg concentrations were related to waterbody acidity and watershed size.

  13. A DNA Mini-Barcoding System for Authentication of Processed Fish Products.

    Science.gov (United States)

    Shokralla, Shadi; Hellberg, Rosalee S; Handy, Sara M; King, Ian; Hajibabaei, Mehrdad

    2015-10-30

    Species substitution is a form of seafood fraud for the purpose of economic gain. DNA barcoding utilizes species-specific DNA sequence information for specimen identification. Previous work has established the usability of short DNA sequences-mini-barcodes-for identification of specimens harboring degraded DNA. This study aims at establishing a DNA mini-barcoding system for all fish species commonly used in processed fish products in North America. Six mini-barcode primer pairs targeting short (127-314 bp) fragments of the cytochrome c oxidase I (CO1) DNA barcode region were developed by examining over 8,000 DNA barcodes from species in the U.S. Food and Drug Administration (FDA) Seafood List. The mini-barcode primer pairs were then tested against 44 processed fish products representing a range of species and product types. Of the 44 products, 41 (93.2%) could be identified at the species or genus level. The greatest mini-barcoding success rate found with an individual primer pair was 88.6% compared to 20.5% success rate achieved by the full-length DNA barcode primers. Overall, this study presents a mini-barcoding system that can be used to identify a wide range of fish species in commercial products and may be utilized in high throughput DNA sequencing for authentication of heavily processed fish products.

  14. Product-service system method to measure sustainability level of traditional smoked fish processing industries

    OpenAIRE

    Purwaningsih Ratna; Cahyantari Anggaina Elfandora; Ariyani Zulfaida; Susanty Aries; Arvianto Ary; Santoso Haryo

    2018-01-01

    Small Medium Enterprise’s (SME) of traditional fish processing at Semarang, Central Java, Indonesia still focus their business on gain more profits. Sustainability aspect has not received enough attention yet. This study aims to review the sustainability level of SME smoked fish Semarang using product service system (PSS) method. PSS consists of three dimensions (1) Environment, (2) Socio-cultural and (3) Economic. Each dimension consists of 6 criteria's. PSS not only assess the level of sust...

  15. Changes in fish production effectivity in eutrophic fishponds of zooplankton structure

    Czech Academy of Sciences Publication Activity Database

    Potužák, J.; Hůda, J.; Pechar, Libor

    2007-01-01

    Roč. 15, - (2007), s. 201-210 ISSN 0967-6120 R&D Projects: GA MŽP(CZ) SM/640/18/03; GA MŽP(CZ) SL/1/6/04 Institutional research plan: CEZ:AV0Z60870520 Keywords : fishponds * zooplankton * eutrophication * fish management * primary production Subject RIV: GL - Fishing Impact factor: 0.828, year: 2007

  16. Fixed-location hydroacoustic monitoring designs for estimating fish passage using stratified random and systematic sampling

    International Nuclear Information System (INIS)

    Skalski, J.R.; Hoffman, A.; Ransom, B.H.; Steig, T.W.

    1993-01-01

    Five alternate sampling designs are compared using 15 d of 24-h continuous hydroacoustic data to identify the most favorable approach to fixed-location hydroacoustic monitoring of salmonid outmigrants. Four alternative aproaches to systematic sampling are compared among themselves and with stratified random sampling (STRS). Stratifying systematic sampling (STSYS) on a daily basis is found to reduce sampling error in multiday monitoring studies. Although sampling precision was predictable with varying levels of effort in STRS, neither magnitude nor direction of change in precision was predictable when effort was varied in systematic sampling (SYS). Furthermore, modifying systematic sampling to include replicated (e.g., nested) sampling (RSYS) is further shown to provide unbiased point and variance estimates as does STRS. Numerous short sampling intervals (e.g., 12 samples of 1-min duration per hour) must be monitored hourly using RSYS to provide efficient, unbiased point and interval estimates. For equal levels of effort, STRS outperformed all variations of SYS examined. Parametric approaches to confidence interval estimates are found to be superior to nonparametric interval estimates (i.e., bootstrap and jackknife) in estimating total fish passage. 10 refs., 1 fig., 8 tabs

  17. A step towards seascape scale conservation: using vessel monitoring systems (VMS to map fishing activity.

    Directory of Open Access Journals (Sweden)

    Matthew J Witt

    Full Text Available BACKGROUND: Conservation of marine ecosystems will require a holistic understanding of fisheries with concurrent spatial patterns of biodiversity. METHODOLOGY/PRINCIPAL FINDINGS: Using data from the UK Government Vessel Monitoring System (VMS deployed on UK-registered large fishing vessels we investigate patterns of fisheries activity on annual and seasonal scales. Analysis of VMS data shows that regions of the UK European continental shelf (i.e. Western Channel and Celtic Sea, Northern North Sea and the Goban Spur receive consistently greater fisheries pressure than the rest of the UK continental shelf fishing zone. CONCLUSIONS/SIGNIFICANCE: VMS provides a unique and independent method from which to derive patterns of spatially and temporally explicit fisheries activity. Such information may feed into ecosystem management plans seeking to achieve sustainable fisheries while minimising putative risk to non-target species (e.g. cetaceans, seabirds and elasmobranchs and habitats of conservation concern. With multilateral collaboration VMS technologies may offer an important solution to quantifying and managing ecosystem disturbance, particularly on the high-seas.

  18. Long-term monitoring of coral reef fish assemblages in the Western central pacific.

    Science.gov (United States)

    Heenan, Adel; Williams, Ivor D; Acoba, Tomoko; DesRochers, Annette; Kosaki, Randall K; Kanemura, Troy; Nadon, Marc O; Brainard, Russell E

    2017-12-05

    Throughout the tropics, coral reef ecosystems, which are critically important to people, have been greatly altered by humans. Differentiating human impacts from natural drivers of ecosystem state is essential to effective management. Here we present a dataset from a large-scale monitoring program that surveys coral reef fish assemblages and habitats encompassing the bulk of the US-affiliated tropical Pacific, and spanning wide gradients in both natural drivers and human impact. Currently, this includes >5,500 surveys from 39 islands and atolls in Hawaii (including the main and Northwestern Hawaiian Islands) and affiliated geo-political regions of American Samoa, the Commonwealth of the Northern Mariana Islands, Guam, and the Pacific Remote Islands Areas. The dataset spans 2010-2017, during which time, each region was visited at least every three years, and ~500-1,000 surveys performed annually. This standardised dataset is a powerful resource that can be used to understand how human, environmental and oceanographic conditions influence coral reef fish community structure and function, providing a basis for research to support effective management outcomes.

  19. Antimicrobial Effect of Filipendula ulmaria Plant Extract Against Selected Foodborne Pathogenic and Spoilage Bacteria in Laboratory Media, Fish Flesh and Fish Roe Product

    Directory of Open Access Journals (Sweden)

    Charalampos Proestos

    2011-01-01

    Full Text Available Water-methanol extract from Filipendula ulmaria contains a variety of phenolic compounds, such as caffeic, p-coumaric and vanillic acid, myricetin, etc, which demonstrate antibacterial activity. Monitoring this activity in the broth using absorbance measurements showed that species of the Enterobacteriaceae family were more resistant than other Gram-negative and Gram-positive bacteria tested. Acidic environment enhanced the antibacterial activity of Filipendula ulmaria extract when it was tested against Salmonella Enteritidis PT4 and Listeria monocytogenes Scott A. The efficacy of Filipendula ulmaria extract against selected foodborne psychrotrophic bacteria was also tested using solid laboratory media and low incubation temperatures for better simulation of food preservation conditions. Higher concentrations of the extract, compared to minimum inhibitory concentration determined in the broth, were needed for satisfactory inhibition of spoilage bacteria. Potential use of Filipendula ulmaria extract as natural food preservative was also examined against natural spoilage flora and inoculated pathogenic bacteria on fish flesh and fish roe product (tarama salad. No significant differences of viable populations of spoilage or pathogenic bacteria were found between the treated samples and controls. Further trials of Filipendula ulmaria extract should be carried out in acidic foods with low fat and protein content, supplemented with additional adjuncts, in order to explore its potential as effective natural food antimicrobial agent.

  20. Monitoring mercury in freshwater fish in the oil sands region of Northern Alberta : spatial and temporal comparisons to regional mercury concentrations in fish

    International Nuclear Information System (INIS)

    Keith, H.

    2010-01-01

    The Regional Aquatics Monitoring Program (RAMP) was launched to provide a better understanding of the potential effects of oil sands development on aquatic systems, and to address issues important to communities of northern Alberta, such as mercury concentrations in fish. Muskeg dewatering, deforestation, flooding, and air emissions are among the potential mercury sources entering the aquatic systems within the oil sands region. RAMP collects non-lethal tissue samples on an annual basis for mercury analysis from northern pike (Esox lucius), walleye (Sander vitreus), and lake whitefish (Coregonus clupeaformis) in various rivers and lakes within the oil sands region. The purpose is to evaluate the suitability of fisheries resources for human consumption and to evaluate the potential cumulative biological effects on fish. A mercury database was developed based on studies in other regions in Alberta and across Canada in order to provide a regional context to the RAMP monitoring results. Data points from 1975 to 2009 were mapped to evaluate spatial and temporal differences in mercury concentrations and any exceedances of subsistence and general consumption guidelines. This monitoring effort has been instrumental in determining whether changes in mercury concentrations in fish are localized to a specific waterbody or regional in nature.

  1. Aquatic Toxic Analysis by Monitoring Fish Behavior Using Computer Vision: A Recent Progress

    Directory of Open Access Journals (Sweden)

    Chunlei Xia

    2018-01-01

    Full Text Available Video tracking based biological early warning system achieved a great progress with advanced computer vision and machine learning methods. Ability of video tracking of multiple biological organisms has been largely improved in recent years. Video based behavioral monitoring has become a common tool for acquiring quantified behavioral data for aquatic risk assessment. Investigation of behavioral responses under chemical and environmental stress has been boosted by rapidly developed machine learning and artificial intelligence. In this paper, we introduce the fundamental of video tracking and present the pioneer works in precise tracking of a group of individuals in 2D and 3D space. Technical and practical issues suffered in video tracking are explained. Subsequently, the toxic analysis based on fish behavioral data is summarized. Frequently used computational methods and machine learning are explained with their applications in aquatic toxicity detection and abnormal pattern analysis. Finally, advantages of recent developed deep learning approach in toxic prediction are presented.

  2. In vitro organic matter digestibility and gas production of fish-meal ...

    African Journals Online (AJOL)

    In this study, an in vitro rumen gas production technique was utilized to evaluate fish-meal coated with different types and levels of fats for total gas production, Metabolizable energy (ME) and organic matter digestibility (OMD) contents. Approximately 200 mg of sample was weighed and inserted in glass syringes, then ...

  3. Polycyclic Aromatic Hydrocarbons (PAH) in Danish Smoked Fish and Meat Products

    DEFF Research Database (Denmark)

    Duedahl-Olesen, Lene; White, S.; Binderup, Mona-Lise

    2006-01-01

    Twenty seven PAH were detected in 45 selected smoked food samples produced in Denmark, including mackerel, herring, trout, small sausages, salami, and bacon. The sum of PAH in smoked meat products ranged from 24 mu g/kg for salami to 64 mu g/kg in bacon, while those in fish products ranged from 2...

  4. Prediction of enthalpy and thermal conductivity of frozen meat and fish products from composition data

    NARCIS (Netherlands)

    Sman, van der R.G.M.

    2008-01-01

    In this paper we present models predicting thermophysical properties of frozen meat products purely using their composition data. Based on our previous model, predicting the water activity of (frozen) meat and fish products, while taking into account the non-ideality of the unfrozen solution, we can

  5. 77 FR 54875 - Codex Alimentarius Commission: Meeting of the Codex Committee on Fish and Fishery Products

    Science.gov (United States)

    2012-09-06

    ... final product requirements) Proposed Food Additive Provisions in Standards for Fish and Fishery Products... (held at Step 7) Section 4 Food Additives Draft Standard for Quick Frozen Scallop Adductor Muscle Meat... DEPARTMENT OF AGRICULTURE Food Safety and Inspection Service [Docket No. FSIS-2012-0035] Codex...

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

    Directory of Open Access Journals (Sweden)

    Lilian Wiens

    2017-09-01

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

  7. Seasonality of reproduction and production in farm fishes, birds and mammals.

    Science.gov (United States)

    Chemineau, P; Malpaux, B; Brillard, J P; Fostier, A

    2007-03-01

    A very large majority of farm animals express seasonal variations in their production traits, thus inducing seasonal availability of fresh derived animal products (meat, milk, cheese and eggs). This pattern is in part the consequence of the farmer's objective to market his products in the most economically favourable period. It may also be imposed by the season-dependent access to feed resources, as in ruminants, or by the specific requirements derived from adaptation to environmental conditions such as water temperature in fish. But seasonal variations in animal products are also the consequence of constraints resulting from the occurrence of a more or less marked seasonal reproductive season in most farm animal species including fish, poultry and mammals. Like their wild counterparts, at mid and high latitudes, most farm animals normally give birth at the end of winter-early spring, the most favourable period for the progeny to survive and thus promote the next generation. As a consequence, most species show seasonal variations in their ovulation frequency (mammals and fish: presence or absence of ovulation; birds: variations or suppression of laying rates), spermatogenic activity (from moderate to complete absence of sperm production), gamete quality (variations in fertilisation rates and embryo survival), and also sexual behaviour. Among species of interest for animal production, fishes and birds are generally considered as more directly sensitive to external factors (mainly temperature in fish, photoperiod in birds). In all species, it is therefore advisable that artificial photoperiodic treatments consisting of extra-light during natural short days (in chickens, turkeys, guinea fowl, sheep and goats) or melatonin during long days (in goats, sheep) be extensively used to either adjust the breeding season to animal producer needs and/or to completely overcome seasonal variations of sperm production in artificial insemination centres (mammals) and breeder flock

  8. THE STUDY OF FISH SUPPLEMENT AND BUTTERFAT SUBSTITUTE EFFECT ON EXPIRY DATE OF PROCESSED CHEESE PRODUCT

    Directory of Open Access Journals (Sweden)

    NATALIYA LOTYSH

    2015-02-01

    Full Text Available The sector of functional products has top-priority meaning – it is the most convenient and natural form of introduction and enrichment of the human organism with vitamins, mineral substances, microelements and other components. Attraction into the branch of raw materials of non-milk origin – fish supplements and substitutes of butterfat – served the basis of technology development of processed cheese products of combined content, which in accordance with acting terminology are called processed cheese products. The technology of processed cheese products allows easily regulating their content by introduction of corresponding supplement that facilitates obtainment of product with set properties and content. Inclusion of meat and fish as the raw materials in the processed cheese content results in enrichment of the product with macro- and microelements, unsaturated fatty acids, except for regulation of fatty acid content of cheese products is executed by substitution of butterfat by butterfat substitute.

  9. Fish by-product meal in diets for commercial laying hens

    Directory of Open Access Journals (Sweden)

    André Ferreira Silva

    2017-07-01

    Full Text Available This study aimed to evaluate the increasing levels (0, 1, 2, 3 e 4% of fish by-product meal in diets for laying hens on performance, egg quality and economic analysis. A total of 160 Dekalb White hens with 52-wk old were distributed in a completely randomized design with five treatments and four replicates of eight birds each. The experiment lasted 84 days divided into four periods of 21 days. Estimates of fish by-product meal levels were determined by polynomial regression. Differences (p < 0.05 were detected for all variables of performance, in egg weight, yolk and albumen percentage, yolk and albumen height, feed cost and production cost, in which the inclusion of fish by-product meal in the diets showed better results. It can be concluded that fish by-product meal can be used in diets for hens as alternative feed, with better results in egg production, feed conversion, egg weight, yolk-albumen ratio and a reduction in feed cost and production cost.

  10. Method of determining of polybrominated diphenyl ethers in fish and fish products by the method of liquid chromatography

    Directory of Open Access Journals (Sweden)

    O.N. Timofeeva

    2016-09-01

    Full Text Available The aim of the work was to develop a methodology for determining of polybrominated diphenyl ethers (PBDE in fish and fish products for the control of impurities content in the food and environmental objects in general. The conditions of chromatography (temperature conditions, the impact of the speed and magnitude of dividing of the gas-carrier stream using a HP-1 capillary columns, the DB-5, HP-50 +, DB-1; and lipids destructive and non-destructive cleaning methods of extract during the determination of PBDEs. The method of determination of 2,2,4,4-Tetrabromodiphenyl ether (BDE-47, 2,2,4,4,5-pentabromodiphenyl ether (BDE-99 and decabromodiphenyl ether (BDE-209 in fish and fish products by the liquid chromatography with electron detector was suggested. The method of PBDE is based on the extraction of samples with hexane-acetone (3:1, purification of the extract with concentrated sulfuric acid (phase ratio hexane-sulfuric acid – 5:1. The second purification step is carried out by using solid phase extraction cartridges «SiOH-H2SO4/SA» and hexane as the eluent. Gas chromatographic analysis of the determination of BDE-47 and BDE-99 is carried out on low-polar capillary column DB-5 (30 m x0.25 mm x0.25 mum with the programming of the column temperature. In determining the BDE-209 a DB-1 nonpolar capillary column was used (15 m x 0.25 mm x 0.1 mum with the column temperature programming. Calculation of the content of BDE-47 and BDE-99 is carried out with the internal standard (2,2, 3,4,4-pentabromodiphenyl ether (BDE-85, BDE-209 by absolute calibration. In determining the BDE-209 the calibration matrix was used. The range of concentrations of the calibration solutions for the determination of BDE-47 and BDE-99 is 0.005–0.05 g/cm 3 , for BDE-209 0.05–0.3 g/cm 3 . The technique allows the measurement of BDE-47 and BDE-99 in the range of 0.0002–0.05 mg/kg of the product concerned; BDE-209 – in the range of 0.002–0.3 mg/kg. The metrological

  11. From microbes to fish the next revolution in food production.

    Science.gov (United States)

    Martínez-Córdova, Luis Rafael; Martínez-Porchas, Marcel; Emerenciano, Maurício Gustavo Coelho; Miranda-Baeza, Anselmo; Gollas-Galván, Teresa

    2017-05-01

    Increasing global population and the consequent increase in demand for food are not a new story. Agroindustrial activities such as livestock help meet this demand. Aquaculture arose decades ago and revolutionized the agroindustrial activity as a significant food generator. However, like livestock, aquaculture is based on finite resources and has been accused of being unsustainable. Abandoning aquaculture is not an option considering the food, foreign exchange, and employment it generates, and therefore must be reinvented. Among the many alternatives suggested to make aquaculture more sustainable, microorganisms have been highlighted as a direct food source for cultured fish and crustaceans, a strategy that promises to revolutionize aquaculture by eliminating waste. Considering waste, as part of a cycle, it can increase stock densities and reduce emissions of contaminants and operational costs.

  12. The impact of processing meat and fish products on phosphorus intake in chronic kidney disease patients.

    Science.gov (United States)

    Lou-Arnal, Luis M; Caverni-Muñoz, Alberto; Arnaudas-Casanova, Laura; Vercet-Tormo, Antonio; Gimeno-Orna, José A; Sanz-París, Alejandro; Caramelo-Gutiérrez, Rocío; Alvarez-Lipe, Rafael; Sahdalá-Santana, Laura; Gracia-García, Olga; Luzón-Alonso, Marta

    2013-11-13

    The use of phosphate additives in meat and fish processing leads to a phosphorus overload that we cannot quantify through labelling or food composition tables. We analysed this increase by measuring phosphorus content in these products by spectrophotometry. We determined the phosphorus/protein ratio in fresh meat and fish products with varying degrees of processing by spectrophotometry (phosphorus) and the Kjeldahl method (proteins). We contrasted these results with those reflected in the food composition tables. The phosphorus/protein ratio was higher in processed meat products (15.83 mg/g) than in battered (11.04 mg/g) and frozen meat products (10.5mg/g), and was lower in fresh (8.41 mg/g) and refrigerated meat products (8.78 mg/g). Fresh white fish had a phosphorus/protein ratio of 8.58mg/g, while it increased by 22% (10.3mg/g) in frozen white fish and by 46% (12.54 mg/g) in battered fish. The information in the tables was poor and confusing, and no reference is made to the brands tested. Processing meat and fish products poses a serious obstacle to the reduction of phosphorus intake. The current regulatory framework does not assist us in the objective of reducing phosphorus additives, since it considers them safe for public consumption. Overcoming these barriers requires a coordinated effort to demonstrate that a high intake of these additives may be harmful to the general population and it should be more closely examined by regulators.

  13. Incremental benefits from the increasing in the production of koi fish Cyprinus carpio var. koi culture

    Directory of Open Access Journals (Sweden)

    Iis Diatin

    2017-07-01

    Full Text Available ABSTRACT  Koi fish is one of the species included in the intensification program of ornamental fish production. Production of koi has only reached 82.04% of total national production target thus making it potential for development. The objective of the study was to assess additional financial benefit of production increment through stocking pattern modification. Present research was performed using case study method on Pokdakan PBC Fish Farm (PPFF, koi fish farmers in Sukabumi. Financial analysis consisted of business analysis, investment criteria, and sensitivity. Stocking pattern management could increase ornamental fish production and its benefit margin up to 1.5 times higher. That investment criteria has shown NPV at value of IDR3,824 million, net BCR 4.96, IRR 86.0%, and PP 1.7 years. Koi fish farming was sensitive to a decline in survival rate and insensitive to the rise of formulated feed price. Keywords: business analysis, koi, investment criteria, production pattern, sensitivity  ABSTRAK  Ikan koi merupakan salah satu ikan yang termasuk dalam program penguatan produksi ikan hias Indonesia. Capaian dari target produksi ikan koi yang ditetapkan pemerintah hanya mencapai 82,04 %, sehingga budidaya ikan koi potensial untuk dikembangkan dan ditingkatkan produksinya. Metode yang digunakan adalah studi kasus pada kelompok pembudidaya ikan hias koi PPFF di Sukabumi. Analisis finansial yang digunakan meliputi analisis usaha, kriteria investasi dan sensitivitas. Pengaturan pola tebar dapat meningkatkan jumlah produksi ikan hias dan marjin keuntungan hingga 1,5 kali. Analisis kriteria investasi menghasilkan nilai NPV sebesar Rp3.824 juta, net B/C 4,94, IRR 86,0% dan PP 1,7 tahun. Budidaya ikan koi sensitif terhadap penurunan kelangsungan hidup dan tidak sensitif terhadap peningkatan harga pakan buatan. Kata kunci: analisis usaha, koi, kriteria investasi, pola tebar, produksi

  14. Biodiesel Production from Spent Fish Frying Oil Through Acid-Base Catalyzed Transesterification

    Directory of Open Access Journals (Sweden)

    Abdalrahman B. Fadhil

    2012-06-01

    Full Text Available Biodiesel fuels were prepared from a special type of frying oil namely spent fish frying oil through two step transesterification viz. acid-base catalyzed transesterification. Hydrochloric acid and potassium hydroxide with methanol were used for this purpose. The oil was pre-treated with (1.0 wt% HCl and methanol to reduce free fatty acids content of the oil. Then, conditions of the base catalyzed step such as base concentration, reaction temperature, methanol to oil molar ratio and reaction time were optimized. The study raveled that, 0.50% KOH w/w of oil; a 6:1 methanol to oil molar ratio; a reaction temperature of 60°C and a duration of 1h were the optimal conditions because they resulted in high biodiesel yield. Fuel properties of the products were assessed and found better than those of the parent oil. Furthermore, they met the specified limits according to the ASTM standards. Thin layer chromatography was used as a simple technique to monitor the transesterification of the oil. Blending of the optimal biodiesel sample with petro diesel using specified volume percentages was done as well. The results indicated that biodiesel had slight effect on the values of the assessed properties.

  15. Biomass performance : monitoring and control in bio-pharmaceutical production

    NARCIS (Netherlands)

    Neeleman, R.

    2002-01-01

    The primary concern in the pharmaceutical industry is not the optimisation of product yield or the reduction of manufacturing cost, but the production of a product of consistently high quality. This has resulted in 'process monitoring' becoming an integral part of process operation. In this

  16. Introducing radioactivity monitoring systems in the production of steel

    International Nuclear Information System (INIS)

    Sofilic, T.; Marjanovic, T.; Rastovcan-Mioc, A.

    2005-01-01

    Over the last twenty years, a significant number of cases of radioactive pollution has been recorded in metallurgical processes. However, it is not certain whether the pollution was caused by increased uncontrolled disposal of waste containing radionuclides or whether it was the result of increased radioactivity monitoring and control of metallic scrap. Many metal producers in the world have therefore implemented systematic monitoring of radioactivity in their production processes. Special attention was given to monitoring radioactivity in steel making processes, which is still the most applied construction material with an annual output of over billion tonnes all over the world. Drawing on the experience of the best known steel producers in Europe and world, Croatian steel mills find it necessary and justified to introduce radioactivity monitoring and control systems of radioactive elements in steel scrap, semi-finished and finished products. The aim of this paper is to point out the need to introduce the radioactivity monitoring and control in steel and steel-casting production, and to inform experts in Croatian steel mills and foundries about potential solutions and current systems. At the same time, we wanted to demonstrate how implementation of monitoring equipment can improve quality management and environmental management systems. This would render Croatian products competitive on the European market both in terms of physical and chemical properties and in terms of product quality certificates and radioactivity information. Since we lack our own standards and regulations to control both domestic and imported steel scrap, semi-finished products (crude steel, hot and cold rolled strip) and finished products, we need apply current international recommendations and guidelines, until we design our own monitoring system and adopt relevant legislation on the national level. This paper describes basic types of radioactivity monitoring and control systems, the most

  17. The scope and structure of the production and catch of fish in Serbia in the period from 2006. to 2012.

    Directory of Open Access Journals (Sweden)

    Ivanović Jelena

    2015-01-01

    Full Text Available Fish represents a significant source of animal proteins in the diet of people in a large part of the world. The market in Serbia is supplied from its own production (carp and trout fish ponds and catch from open waters. However, the largest part of the fish on the market is imported. Average area under carp fish ponds from 2006. to 2012. was 8,417 hektars, and under trout fish ponds was 49,900 square meters. Average annual production of carp fish species in this period was 7,228 tons, and of trout was 923 tons. In open waters of Serbia, the catch (from both professional and sport fishing is averagely 3,745 tons of fish. The biggest catch of fish in open waters refers to goldfish, then carp and bream, while lower catch refers to white bighead. The objective of this investigation was to determine the scope and structure of fish catch and production in Serbia from 2006. to 2012. The data on fish catch and production were taken from Statistical Yearbook of the Republic of Serbia. [Projekat Ministarstva nauke Republike Srbije, br. TR 31011

  18. JUSTIFICATION OF MODES THERMAL PROCESSING OF THE SEMIFINISHED THORNY SKATE TO PRODUCTION OF FISH CULINARY PRODUCTS OF FUNCTIONAL PURPOSE

    Directory of Open Access Journals (Sweden)

    V. V. Shchetinskii

    2014-01-01

    Full Text Available Summary. Raja radiatd, the non-conventional object of commercial fishing in North-East Atlantic region which is not under fishing quota should be declared as a cost-effective full bio raw material for the broad line food production enriched with chondroitin sulfate (a valuable biological component with proved anti-inflammatory and anti-tumor acting. The main obstacle for the industrial food processing of the Raja radiatd is a high level of urea in the muscle tissue. The patented technical solution to this problem is being proposed. Justified modes of preliminary and final heat treatment for a wide range of fish culinary products of functional purpose of the Raja radiatd. Assessed by calculation of indicators of the biological value of the protein ready culinary products of the pitch with regard to experimentally established weight loss, protein and fat at all stages of the thermal treatment of the material. The high level of chondroitin sulfate in the culinary finished product is experimentally confirmed. The outcome of the research was the development of formulations and manufacturing fish culinary products functionality of a wide range based on the use of Raja radiatd meat. Complex physico-chemical analysis of raw materials, semi-finished and finished products allowed to develop standards of waste, loss, and output of finished products, to optimize the formulation of products and technological conditions of its production. Experimentally determine some parameters of the nutritional value of new products, comprehensive assessment of its quality, which confirmed its improved handling compared to the same fishery products provided to the consumer market in Murmansk.

  19. Monitoring Quality of Biotherapeutic Products Using Multivariate Data Analysis.

    Science.gov (United States)

    Rathore, Anurag S; Pathak, Mili; Jain, Renu; Jadaun, Gaurav Pratap Singh

    2016-07-01

    Monitoring the quality of pharmaceutical products is a global challenge, heightened by the implications of letting subquality drugs come to the market on public safety. Regulatory agencies do their due diligence at the time of approval as per their prescribed regulations. However, product quality needs to be monitored post-approval as well to ensure patient safety throughout the product life cycle. This is particularly complicated for biotechnology-based therapeutics where seemingly minor changes in process and/or raw material attributes have been shown to have a significant effect on clinical safety and efficacy of the product. This article provides a perspective on the topic of monitoring the quality of biotech therapeutics. In the backdrop of challenges faced by the regulatory agencies, the potential use of multivariate data analysis as a tool for effective monitoring has been proposed. Case studies using data from several insulin biosimilars have been used to illustrate the key concepts.

  20. Improved Combustion Products Monitor for the ISS, Phase II

    Data.gov (United States)

    National Aeronautics and Space Administration — The Compound Specific Analyzer – Combustion Products, used on the International Space Station as a warning monitor of smoldering or combustion events, is being...

  1. Improved Combustion Products Monitor for the ISS, Phase I

    Data.gov (United States)

    National Aeronautics and Space Administration — The Compound Specific Analyzer - Combustion Products is used on the International Space Station as a warning monitor of smoldering or combustion events and, after...

  2. Utilization possibilites of waste products from fishing and hunting to biogas and bio-oil production in Uummannaq County

    DEFF Research Database (Denmark)

    Gunnarsdottir, Ragnhildur; Jørgensen, Marianne Willemoes

    2008-01-01

    In spring 2007 a project was carried out at the Arctic Technology Centre in which research of various possibilities of utilizing waste products from fishing and hunting generated in Uummannaq County was performed. Numerous alternatives were identified in the project, which were weighed against...... the specific conditions that apply in Uummannaq County. The best alternatives were evaluated to be biogas production and utilization of fat from the fish waste to produce bio-oil. The results showed that with the price of energy in Greenland in 2009 of 3,71 DKR per kWh, the waste in Uummannaq County would...... amount to approximately 6 million DKR when using biogas production and 5,7 million DKR when using bio-oil. Compared with the energy used in Uummannaq County today, the biogas production would be able to supply 17 percent of the energy and bio-oil production would cover approximately 16 percent....

  3. Effects of fish density and river fertilization on algal standing stocks, invertebrates communities, and fish production in an Arctic River

    Science.gov (United States)

    Deegan, Linda A.; Peterson, B.J.; Golden, H.; McIvor, C.C.; Miller, M.C.

    1997-01-01

    This study examined the relative importance of bottom-up and top-down controls of an arctic stream food web by simultaneous manipulation of the top predator and nutrient availability. We created a two-step trophic system (algae to insects) by removal of the top predator (Arctic grayling, Thymallus arcticus) in fertilized and control stream reaches. Fish abundance was also increased 10 times to examine the effect of high fish density on stream ecosystem dynamics and fish. We measured the response of epilithic algae, benthic and drifting insects, and fish to nutrient enrichment and to changes in fish density. Insect grazers had little effect on algae and fish had little effect on insects. In both the control and fertilized reaches, fish growth, energy storage, and reproductive response of females declined with increased fish density. Fish growth and energy storage were more closely correlated with per capita insect availability than with per capita algal standing stock

  4. Evaluation of process parameters in the industrial scale production of fish nuggets

    Directory of Open Access Journals (Sweden)

    Adriane da Silva

    2011-06-01

    Full Text Available This work reports the use of experimental design for the assessment of the effects of process parameters on the production of fish nuggets in an industrial scale environment. The effect of independent factors on the physicochemical and microbiological parameters was investigated through a full 24 experimental design. The studied factors included the temperature of fish fillet and pulp in the mixer, the temperature of the added fat, the temperature of water and the ratio of protein extraction time to emulsion time. The physicochemical analyses showed that the higher temperature of the pulp and fillet of fish, the lower the protein in the final product. Microbiological analyses revealed that the counting of Staphylococcus coagulase positive, total and thermo-tolerant coliforms were in accordance with the current legislation.

  5. Habitat Quality and Anadromous Fish Production on the Warm Springs Reservation. Final Report.

    Energy Technology Data Exchange (ETDEWEB)

    Fritsch, Mark A.

    1995-06-01

    The number of anadromous fish returning to the Columbia River and its tributaries has declined sharply in recent years. Changes in their freshwater, estuarine, and ocean environments and harvest have all contributed to declining runs of anadromous fish. Restoration of aquatic resources is of paramount importance to the Confederated Tribes of the Warm Springs (CTWS) Reservation of Oregon. Watersheds on the Warm Springs Reservation provide spawning and rearing habitat for several indigenous species of resident and anadromous fish. These streams are the only ones in the Deschutes River basin that still sustain runs of wild spring chinook salmon, Oncorhynchus, tshawytscha. Historically, reservation streams supplied over 169 km of anadromous fish habitat. Because of changes in flows, there are now only 128 km of habitat that can be used on the reservation. In 1981, the CTWS began a long-range, 3-phase study of existing and potential fish resources on the reservation. The project, consistent with the Northwest Power Planning Council`s Fish and Wildlife Program, was designed to increase the natural production of anadromous salmonids on the reservation.

  6. Farmed fish welfare-suffering assessment and impact on product quality

    Directory of Open Access Journals (Sweden)

    Bianca Maria Poli

    2010-01-01

    Full Text Available Fish welfare, suffering and the perception of pain were debated, together with several factors reducing infra vitam welfare of farmed fish (genetic, environment, density, malnutrition, starvation, cataracts, deformities, vaccination side effects, transport, handling, confinement, crowding, harvesting, killing method. Behavioural and physiological stress responses were considered as indicators of welfare reduction. The effects of pre-slaughter management practices, and the most commonly used stunning/slaughtering methods on welfare and quality reduction of farmed fish were discussed. A number of indicators can be used to assess fish welfare-suffering, both in a scientific and practical context, such as behavioural, haematic, cellular, tissue post mortem fish stress and quality indicators, but none of them are optimal. The best strategy for a reliable assessment of fish welfare/suffering and their impact on product quality is a multidisciplinary approach that takes into account animal behaviour and the different biochemical and physiological ante mortem and post mortem processes involved: several components, all influenced in a similar way by the same condition, suggest real welfare and quality reduction.

  7. Habitat quality and anadromous fish production on the Warm Springs Reservation. Final report

    International Nuclear Information System (INIS)

    Fritsch, M.A.

    1995-06-01

    The number of anadromous fish returning to the Columbia River and its tributaries has declined sharply in recent years. Changes in their freshwater, estuarine, and ocean environments and harvest have all contributed to declining runs of anadromous fish. Restoration of aquatic resources is of paramount importance to the Confederated Tribes of the Warm Springs (CTWS) Reservation of Oregon. Watersheds on the Warm Springs Reservation provide spawning and rearing habitat for several indigenous species of resident and anadromous fish. These streams are the only ones in the Deschutes River basin that still sustain runs of wild spring chinook salmon, Oncorhynchus, tshawytscha. Historically, reservation streams supplied over 169 km of anadromous fish habitat. Because of changes in flows, there are now only 128 km of habitat that can be used on the reservation. In 1981, the CTWS began a long-range, 3-phase study of existing and potential fish resources on the reservation. The project, consistent with the Northwest Power Planning Council's Fish and Wildlife Program, was designed to increase the natural production of anadromous salmonids on the reservation

  8. Environmental monitoring of the Robertson Reservoir (1990-2005) : evolution of the mercury levels in the flesh of fish

    International Nuclear Information System (INIS)

    Therrien, J.

    2006-04-01

    This paper provided details of an environmental monitoring analysis of the stomach contents and mercury levels in the flesh of main fish species in the Robertson Reservoir. The report noted that smelt species were dominant in the reservoir and in the adjoining Ivry Lake, while benthos were dominant the brackish waters of Lake Monger. Sticklebacks were found in the stomachs of the examined fish, while the diet of brook trout was comprised mainly of benthos in lakes and reservoirs. Arctic char mainly ate benthos in the reservoir. Landlocked salmon mainly ate fish in the reservoirs and lakes. Smelt was the primary diet of Arctic char until 2003. After 2003, Arctic char fed mainly on sticklebacks. It was observed that average mercury levels of fish of a standardized length increased by a factor of 2.7 to 4.9 after the impoundment of the reservoir. However, average mercury levels stopped increasing for dwarf Arctic char in 2003. Levels of mercury in brook trout have not increased since 1999. A significant decrease in mercury levels of rainbow smelt were observed. Average mercury levels of fish in the brackish waters of Lake Monger were lower than levels observed in most other freshwater lakes in the region. It was concluded that the number of monthly meals recommended by the fish consumption guide produced in 2001 for the Gros Mecatina region are still appropriate for the reservoir

  9. Modified Atmosphere Systems and Shelf Life Extension of Fish and Fishery Products

    Science.gov (United States)

    DeWitt, Christina A. Mireles; Oliveira, Alexandra C.M.

    2016-01-01

    This review aims at summarizing the findings of studies published over the past 15 years on the application of modified atmosphere (MA) systems for shelf life extension of fish and fishery products. This review highlights the importance of CO2 in the preservation of seafood products, and underscores the benefits of combining MA technology with product storage in the superchilled temperature range. It is generally accepted that MA technology cannot improve product quality and should not be utilized as a substitute for good sanitation and strict temperature control. Benefits derived from application of MA, however, can significantly impact preservation of product quality and it subsequent shelf-life. For this reason, this review is the first of its kind to propose detailed handling and quality guidelines for fresh fish to realize the maximum benefit of MA technology. PMID:28231143

  10. Oxidative Stability and Sensory Attributes of Fermented Milk Product Fortified with Fish Oil and Marine Phospholipids

    DEFF Research Database (Denmark)

    Lu, Henna Fung Sieng; Thomsen, Birgitte Raagaard; Hyldig, Grethe

    2013-01-01

    Marine phospholipids (PL) are potential ingredients for food fortification due to its numerous advantages. The main objective of this study was to investigate whether a fermented milk product fortified with a mixture of marine PL and fish oil had better oxidative stability than a fermented milk...... product fortified with fish oil alone. Fortification of a fermented milk product with marine PL was performed by incorporating 1 % w/w lipids, either in the form of neat oil or in the form of a pre-emulsion. Lipid oxidation was investigated in the neat emulsions and fortified products by the measurements...... of primary, secondary volatile oxidation products and tocopherol content upon 32 days storage at 2 °C and 28 days storage at 5 °C, respectively. Analyses of particle size distribution, viscosity and microbial growth were also performed. In addition, sensory attributes such as sour, fishy and rancid flavor...

  11. Women's independent access to productive resources: fish ponds in the Oxbow Lakes Project, Bangladesh.

    Science.gov (United States)

    Nathan, D; Apu, N A

    1998-01-01

    This article analyzes the experiences of women in acquiring user rights to fish ponds on government owned lands in the Oxbow Lakes Project in Bangladesh. The analysis describes the significance, functioning, and problems of women in fish farming. The field reports were based on the authors' involvement in implementation of the extension of fishing rights to women during 6 weeks/year over 4 years. Analysis was based on observations and discussions during project implementation and on a survey conducted in March 1997. The project involved land reforms that transferred rights to a group of poor people. Most of the lakes had been overfished. The poor fishers were organized into Lake Fishing Teams (LFTs) with the right to culture and harvest fish in lakes that were under common property management. In late 1994, at least 50% of the women were included in the Fish Farming Groups (FFGs) to manage fish culture in ponds constructed in shallow areas of the lake shore. The proportion of women was increased to 75% in 1994-95 and favored women-headed households. By March 1997, there were 510 members of FFGs, of whom 84% were single, poor women. Women had low participation in fish sales and netting and guarding the harvest. Women in mixed gender groups complained that men dominated the key decision-making and financial areas. Production averaged 1500 kg/hectare in 1995-96. FFGs had higher expenses for feed and fertilizer than LFTs. This endeavor earned higher per capita income than poultry raising. All women groups performed better than mixed groups. These groups increased assertiveness and self-confidence.

  12.   Ultrasonic monitoring of fish thawing process optimal time of thawing and effect of freezing/thawing.

    Science.gov (United States)

    El Kadi, Youssef Ait; Moudden, Ali; Faiz, Bouazza; Maze, Gerard; Decultot, Dominique

    2013-01-01

    Fish quality is traditionally controlled by chemical and microbiological analysis. The non-destructive control presents an enormous professional interest thanks to the technical contribution and precision of the analysis to which it leads. This paper presents the results obtained from a characterisation of fish thaw-ing process by the ultrasonic technique, with monitoring thermal processing from frozen to defrosted states. The study was carried out on fish type red drum and salmon cut into fillets of 15 mm thickness. After being frozen at -20°C, the sample is enclosed in a plexiglas vessel with parallel walls at the ambient temperature 30°C and excited in perpendicular incidence at 0.5 MHz by an ultrasonic pulser-receiver Sofranel 5052PR. the technique of measurement consists to study the signals reflected by fish during its thawing, the specific techniques of signal processing are implemented to deduce informations characterizing the state of fish and its thawing process by examining the evolution of the position echoes reflected by the sample and the viscoelastic parameters of fish during its thawing. The obtained results show a relationship between the thermal state of fish and its acoustic properties, which allowed to deduce the optimal time of the first thawing in order to restrict the growth of microbial flora. For salmon, the results show a decrease of 36% of the time of the second thawing and an increase of 10.88% of the phase velocity, with a decrease of 65.5% of the peak-to-peak voltage of the signal reflected, thus a decrease of the acoustic impedance. This study shows an optimal time and an evolution rate of thawing specific to each type offish and a correlation between the acoustic behavior of fish and its thermal state which approves that this technique of ultrasonic monitoring can substitute the control using the destructive chemical analysis in order to monitor the thawing process and to know whether a fish has suffered an accidental thawing.

  13. Preparation of an extruded fish snack using twin screw extruder and the storage characteristics of the product

    OpenAIRE

    Sharma, S.K.; Basu, S.

    2003-01-01

    A value-added extruded fish product was prepared with corn flour (80%) and fish (sciaenid) powder (20%), using a twin-screw extruder. The effect of different parameters like moisture, temperature, fish powder concentration, speed of the extruder and die-diameter on expansion ratio and crisp texture were studied. The storage characteristics of the final product were studied using three different types of packaging under nitrogen flushing. The study revealed that aluminum foil is the best packa...

  14. Seaweed utilization for integrated bioenergy and fish feed production

    DEFF Research Database (Denmark)

    Seghetta, Michele

    2016-01-01

    and processing of seaweed compared to other energies and protein production technologies. Optimization of cultivation design could reduce externalities generated by the materials use. Optimization of storage methods, e.g. drying, is necessary to reduce the total energy consumption. Improvement......Linear production systems are not environmentally sustainable since they produce waste at a higher rate than nature is able to absorb. Creation of closed-loop production processes aiming at generating zero-waste is the foundation for a circular economy. Offshore seaweed cultivation can play a key...... role to transform linear production systems into biobased circular flows. Seaweed can absorb manmade emissions to water, while producing valuable compounds that can re-enter the economic system. In the thesis, Life Cycle Assessment (LCA) methodology is used to analyze the environmental performance...

  15. Radiological impact of the nuclear power plant accident on freshwater fish in Fukushima: An overview of monitoring results.

    Science.gov (United States)

    Wada, Toshihiro; Tomiya, Atsushi; Enomoto, Masahiro; Sato, Toshiyuki; Morishita, Daigo; Izumi, Shigehiko; Niizeki, Kouji; Suzuki, Shunji; Morita, Takami; Kawata, Gyo

    2016-01-01

    Radionuclide ((131)I, (134)Cs, and (137)Cs) concentrations of monitored freshwater fish species collected from different habitats (rivers, lakes, and culture ponds) in Fukushima Prefecture during March 2011-December 2014 (total 16 species, n = 2692) were analyzed to present a detailed description of radionuclide contamination after the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident, and to elucidate species-specific spatiotemporal declining trends of (137)Cs concentration for their respective habitats. Low concentrations of (131)I (≤24 Bq kg(-1)-wet) were detected from only 11 samples collected during March-June 2011, demonstrating that (131)I transferred to freshwater fish were not intense. In river and lake fishes, a more gradual decrease and higher radiocesium ((134)Cs, (137)Cs) concentrations were observed than in culture pond fishes, which strongly implied that radiocesium in freshwater fish species was mainly bioaccumulated through the food web in the wild. During 2011-2014, percentages above the Japanese regulatory limit of 100 Bq kg(-1)-wet for radiocesium in river and lake fish (14.0% and 39.6%, respectively) were higher than in monitored marine fish (9.9%), indicating longer-term contamination of freshwater fish species, especially in lakes. Higher radiocesium concentrations (maximum 18.7 kBq kg(-1)-wet in Oncorhynchus masou) were found in the northwestern areas from the FDNPP with higher deposition. However, radiocesium contamination levels were regarded as 1-2 orders of magnitude less than those after the Chernobyl accident. Lagged increase of (137)Cs concentration and longer ecological half-lives (Teco: 1.2-2.6 y in the central part of Fukushima Prefecture) were observed in carnivorous salmonids (O. masou, Salvelinus leucomaenis), whereas a rapid increase and decrease of (137)Cs concentration and shorter Teco (0.99 and 0.69 y) were found in herbivorous and planktivorous osmerids (Plecoglossus altivelis, Hypomesus nipponensis) with

  16. Product-service system method to measure sustainability level of traditional smoked fish processing industries

    Directory of Open Access Journals (Sweden)

    Purwaningsih Ratna

    2018-01-01

    Full Text Available Small Medium Enterprise’s (SME of traditional fish processing at Semarang, Central Java, Indonesia still focus their business on gain more profits. Sustainability aspect has not received enough attention yet. This study aims to review the sustainability level of SME smoked fish Semarang using product service system (PSS method. PSS consists of three dimensions (1 Environment, (2 Socio-cultural and (3 Economic. Each dimension consists of 6 criteria's. PSS not only assess the level of sustainability but also formulated the recommendation to increase the industries sustainability level. Sustainability assessment and recommendations formulation is guided by a check-list form. Then, the portfolio diagram used to select these recommendations according to its feasibility to be implemented and its importance for the industries. The result of sustainability assessment for traditional fish processing is 0.44, categorized as medium level. The recommendations for the environmental dimension are (1 use of liquid smoke on fish processing and (2 use of wastewater treatment with anaerobic ponds Recommendation for the socio-cultural dimension is use personal protective tool to reduce worker risk on safety and health. Recommendation for the economic dimension is used social media for product marketing and increasing the economic value of fish lung wastes. Recommendations are then illustrated in a diagram in the form of radar sustainability.

  17. Valorisation of fish by-products against waste management treatments--Comparison of environmental impacts.

    Science.gov (United States)

    Lopes, Carla; Antelo, Luis T; Franco-Uría, Amaya; Alonso, Antonio A; Pérez-Martín, Ricardo

    2015-12-01

    Reuse and valorisation of fish by-products is a key process for marine resources conservation. Usually, fishmeal and oil processing factories collect the by-products generated by fishing port and industry processing activities, producing an economical benefit to both parts. In the same way, different added-value products can be recovered by the valorisation industries whereas fishing companies save the costs associated with the management of those wastes. However, it is important to estimate the advantages of valorisation processes not only in terms of economic income, but also considering the environmental impacts. This would help to know if the valorisation of a residue provokes higher impact than other waste management options, which means that its advantages are probably not enough for guarantying a sustainable waste reuse. To that purpose, there are several methodologies to evaluate the environmental impacts of processes, including those of waste management, providing different indicators which give information on relevant environmental aspects. In the current study, a comparative environmental assessment between a valorisation process (fishmeal and oil production) and different waste management scenarios (composting, incineration and landfilling) was developed. This comparison is a necessary step for the development and industrial implementation of these processes as the best alternative treatment for fish by-products. The obtained results showed that both valorisation process and waste management treatments presented similar impacts. However, a significant benefit can be achieved through valorisation of fish by-products. Additionally, the implications of the possible presence of pollutants were discussed. Copyright © 2015 Elsevier Ltd. All rights reserved.

  18. Characterization of anti-listerial lactic acid bacteria isolated from Thai fermented fish products

    DEFF Research Database (Denmark)

    Østergaard, Anya; Embarek, Peter Karim Ben; Wedell-Neergaard, C.

    1998-01-01

    Thai fermented fish products were screened for lactic acid bacteria capable of inhibiting Listeria sp. (Listeria innocua). Of 4150 assumed lactic acid bacteria colonies from MRS agar plates that were screened by an agar-overlay method 58 (1.4%) were positive. Forty four of these strains were...

  19. Shifts in North Sea forage fish productivity and potential fisheries yield

    NARCIS (Netherlands)

    Clausen, Lotte W.; Rindorf, Anna; Deurs, van Mikael; Dickey-Collas, Mark; Hintzen, Niels T.

    2018-01-01

    1. Forage fish populations support large scale fisheries and are key components of marine ecosystems across the world, linking secondary production to higher trophic levels. While climate-induced changes in the North Sea zooplankton community are described and documented in literature, the

  20. Umatilla Basin Natural Production Monitoring and Evaluation; 2003-2004 Annual Report.

    Energy Technology Data Exchange (ETDEWEB)

    Schwartz, Jesse D.M.; Contor, Craig C.; Hoverson, Eric (Confederated Tribes of the Umatilla Indian Reservation, Department of Natural Resources, Pendleton, OR)

    2005-10-01

    The Umatilla Basin Natural Production Monitoring and Evaluation Project (UBNPMEP) is funded by Bonneville Power Administration (BPA) as directed by section 4(h) of the Pacific Northwest Electric Power Planning and Conservation Act of 1980 (P. L. 96-501). This project is in accordance with and pursuant to measures 4.2A, 4.3C.1, 7.1A.2, 7.1C.3, 7.1C.4 and 7.1D.2 of the Northwest Power Planning Council's (NPPC) Columbia River Basin Fish and Wildlife Program (NPPC 1994). Work was conducted by the Fisheries Program of the Confederated Tribes of the Umatilla Indian Reservation (CTUIR). UBNPMEP is coordinated with two ODFW research projects that also monitor and evaluate the success of the Umatilla Fisheries Restoration Plan. Our project deals with the natural production component of the plan, and the ODFW projects evaluate hatchery operations (project No. 19000500, Umatilla Hatchery M & E) and smolt outmigration (project No. 198902401, Evaluation of Juvenile Salmonid Outmigration and Survival in the Lower Umatilla River). Collectively these three projects comprehensively monitor and evaluate natural and hatchery salmonid production in the Umatilla River Basin. Table 1 outlines relationships with other BPA supported projects. The need for natural production monitoring has been identified in multiple planning documents including Wy-Kan-Ush-Mi Wa-Kish-Wit Volume I, 5b-13 (CRITFC 1996), the Umatilla Hatchery Master Plan (CTUIR & ODFW 1990), the Umatilla Basin Annual Operation Plan (ODFW and CTUIR 2004), the Umatilla Subbasin Summary (CTUIR & ODFW 2001), the Subbasin Plan (CTUIR & ODFW 2004), and the Comprehensive Research, Monitoring, and Evaluation Plan (Schwartz & Cameron Under Revision). Natural production monitoring and evaluation is also consistent with Section III, Basinwide Provisions, Strategy 9 of the 2000 Columbia River Basin Fish and Wildlife Program (NPPC 1994, NPPC 2004). The need for monitoring the natural production of salmonids in the Umatilla River

  1. Effects of artificial feeds on growth and production of fishes in Polyculture

    Directory of Open Access Journals (Sweden)

    M.A. Hosen

    2014-12-01

    Full Text Available A study on the effects of artificial feeds on growth and production of fishes along with some limnological conditions were conducted in polyculture system. Species of Indian major carp (Cirrhinus mrigala and exotic fishes (Hypophthalmicthys molitrix and Oreochromis niloticus were stocked in six ponds under two treatments, each with three replications. Stocking rate in both treatments was 100 fish per decimal at the ratio of silver carp: tilapia: mrigal = 2: 2: 1. Fertilization and artificial feeds were given in Ttreatment 1 (T1 and only fertilization was done in Treatment 2 (T2. Wheat bran, rice bran and soybean meal were given daily as artificial feed in T1 in the ratio of wheat bran: rice bran: soybean meal = 2: 2: 1 (by wt. Urea, T.S.P and cow dung were applied fortnightly at the rate of 60 g deci-1, 90 g deci-1 and 2 kg deci-1 respectively. Water temperature, transparency, pH, dissolved oxygen, free CO2, total alkalinity, PO4-P and NO3-N were determined fortnightly and phytoplankton and zooplankton were studied fortnightly. These limnological conditions were more or less similar in the ponds under two treatments and were within suitable ranges. Calculated gross and net yields of fish were 16.56 and 12.48 ton ha-1 respectively in case of fertilization and artificial feeding application (T1 and 9.99 and 5.91 ton ha-1 respectively in case of only fertilization (T2. Application of artificial feed in T1 significantly increased the growth and production of fish more than two times which indicates that artificial feeding in polyculture is very useful for increasing fish production.

  2. Linking Forests and Fish: The Relationship Between Productivities of Salmonids and Forest Stands in Northern California

    Science.gov (United States)

    Wilzbach, P.; Frazey, S.

    2005-05-01

    Productivities of resident salmonid populations, upland, and riparian areas in 25 small watersheds of coastal northern California were estimated and compared to determine if: 1) upland site productivity predicted riparian site productivity; 2) either upland or riparian site productivity predicted salmonid productivity; and 3) other parameters explained more of the variance in salmonid productivity than upland or riparian site productivity. Salmonid productivity was indexed by total salmonid biomass, length of age 1 fish, and percent habitat saturation. Upland and riparian site productivities were estimated using site indices for redwood (Sequoia sempervirens) and red alder (Alnus rubra), respectively. Upland and riparian site indices were correlated, but neither factor contributed to the best approximating models of salmonid biomass or fish length at age one. Salmonid biomass was best described by a positive relationship with drainage area, and length at age was best described by a positive relationship with percent of riparian hardwoods. Percent habitat saturation was not well described by any of the models constructed. Lack of a relationship between upland conifer and salmonid productivity suggests that management of land for timber productivity and component streams for salmonid production in these sites will require separate, albeit integrated, strategies.

  3. Economic Analysis of Small Scale Fish Pond Production in Oguta ...

    African Journals Online (AJOL)

    What are the costs and returns of small-scale fishpond enterprises? What problems hinder the development of small-scale fishpond production? Data were collected with the aid of structured questionnaires and interviews. Descriptive statistics, gross margin and likert scale were employed in data analysis. Gross margin ...

  4. Bee products prevent agrichemical-induced oxidative damage in fish.

    Directory of Open Access Journals (Sweden)

    Daiane Ferreira

    Full Text Available In southern South America and other parts of the world, aquaculture is an activity that complements agriculture. Small amounts of agrichemicals can reach aquaculture ponds, which results in numerous problems caused by oxidative stress in non-target organisms. Substances that can prevent or reverse agrichemical-induced oxidative damage may be used to combat these effects. This study includes four experiments. In each experiment, 96 mixed-sex, 6-month-old Rhamdia quelen (118±15 g were distributed into eight experimental groups: a control group that was not exposed to contaminated water, three groups that were exposed to various concentrations of bee products, three groups that were exposed to various concentrations of bee products plus tebuconazole (TEB; Folicur 200 CE™ and a group that was exposed to 0.88 mg L(-1 of TEB alone (corresponding to 16.6% of the 96-h LC50. We show that waterborne bee products, including royal jelly (RJ, honey (H, bee pollen (BP and propolis (P, reversed the oxidative damage caused by exposure to TEB. These effects were likely caused by the high polyphenol contents of these bee-derived compounds. The most likely mechanism of action for the protective effects of bee products against tissue oxidation and the resultant damage is that the enzymatic activities of superoxide dismutase (SOD, catalase (CAT and glutathione-S-transferase (GST are increased.

  5. Bee products prevent agrichemical-induced oxidative damage in fish.

    Science.gov (United States)

    Ferreira, Daiane; Rocha, Helio Carlos; Kreutz, Luiz Carlos; Loro, Vania Lucia; Marqueze, Alessandra; Koakoski, Gessi; da Rosa, João Gabriel Santos; Gusso, Darlan; Oliveira, Thiago Acosta; de Abreu, Murilo Sander; Barcellos, Leonardo José Gil

    2013-01-01

    In southern South America and other parts of the world, aquaculture is an activity that complements agriculture. Small amounts of agrichemicals can reach aquaculture ponds, which results in numerous problems caused by oxidative stress in non-target organisms. Substances that can prevent or reverse agrichemical-induced oxidative damage may be used to combat these effects. This study includes four experiments. In each experiment, 96 mixed-sex, 6-month-old Rhamdia quelen (118±15 g) were distributed into eight experimental groups: a control group that was not exposed to contaminated water, three groups that were exposed to various concentrations of bee products, three groups that were exposed to various concentrations of bee products plus tebuconazole (TEB; Folicur 200 CE™) and a group that was exposed to 0.88 mg L(-1) of TEB alone (corresponding to 16.6% of the 96-h LC50). We show that waterborne bee products, including royal jelly (RJ), honey (H), bee pollen (BP) and propolis (P), reversed the oxidative damage caused by exposure to TEB. These effects were likely caused by the high polyphenol contents of these bee-derived compounds. The most likely mechanism of action for the protective effects of bee products against tissue oxidation and the resultant damage is that the enzymatic activities of superoxide dismutase (SOD), catalase (CAT) and glutathione-S-transferase (GST) are increased.

  6. Oxidative stability during storage of fish oil from filleting by-products of rainbow trout (Oncorhynchus mykiss) is largely independent of the processing and production temperature

    DEFF Research Database (Denmark)

    Honold, Philipp; Nouard, Marie-Louise; Jacobsen, Charlotte

    2016-01-01

    Rainbow trout (Oncorhynchus mykiss) is the main fish species produced in Danish fresh water farming. Large amounts of fileting by-products like heads, bones, tails (HBT), and intestines are produced when rainbow trout is processed to smoked rainbow trout filets. The filleting by-products can...... be used to produce high quality fish oil. In this study, the oxidative stability of fish oil produced from filleting by-products was evaluated. The oil was produced from conventional or organic fish (low and high omega-3 fatty acid content) at different temperatures (70 and 90°C). The oxidative stability...

  7. Prospects for the Elimination of Clostridium Botulinum from Fish and Fishery Products by Irradiation

    Energy Technology Data Exchange (ETDEWEB)

    Hobbs, G. [Torry Research Station, Ministry of Technology, Aberdeen, Scotland (United Kingdom)

    1968-07-15

    The paper first discusses the occurrence of Clostridium botulinum in fish and fishery products and their resistance to irradiation, and then considers the different possible irradiation treatments such as radappertization, radurization and combined processes. For Great Britain it is suggested that sea- frozen fish should be thawed, filleted, packaged and irradiated at 0.3 Mrads. This irradiation treatment would give a sufficient extension of the market life. To eliminate the botulism hazard a temperature of less than 5 Degree-Sign C for storage and distribution is recommended. (author)

  8. Deterioration and shelf-life extension of fish and fishery products by modified atmosphere packaging

    OpenAIRE

    Payap Masniyom

    2011-01-01

    Fish and fishery products have been recognized as a nutrition source due to their high protein content. Moreover, theycontain considerable amount of unsaturated fatty acids, especially omega-3 fatty acids, which are regarded as preventivecompounds. However, shelf-life of seafood is limited by biochemical and microbiological changes. Modified atmospherepackaging (MAP) is widely used for minimally processed fishery products including fresh meat for retarding microbial growthand enzymatic spoila...

  9. Rapid analysis of pharmaceuticals and personal care products in fish plasma micro-aliquots using liquid chromatography tandem mass spectrometry.

    Science.gov (United States)

    Chen, Fangfang; Gong, Zhiyuan; Kelly, Barry C

    2015-02-27

    A sensitive analytical method based on liquid-liquid extraction (LLE) and liquid chromatography tandem mass spectrometry (LC-MS/MS) was developed for rapid analysis of 11 pharmaceuticals and personal care products (PPCPs) in fish plasma micro-aliquots (∼20μL). Target PPCPs included, bisphenol A, carbamazepine, diclofenac, fluoxetine, gemfibrozil, ibuprofen, naproxen, risperidone, sertraline, simvastatin and triclosan. A relatively quicker and cheaper LLE procedure exhibited comparable analyte recoveries with solid-phase extraction. Rapid separation and analysis of target compounds in fish plasma extracts was achieved by employing a high efficiency C-18 HPLC column (Agilent Poroshell 120 SB-C18, 2.1mm×50mm, 2.7μm) and fast polarity switching, enabling effective monitoring of positive and negative ions in a single 9min run. With the exception of bisphenol A, which exhibited relatively high background contamination, method detection limits of individual PPCPs ranged between 0.15 and 0.69pg/μL, while method quantification limits were between 0.05 and 2.3pg/μL. Mean matrix effect (ME) values ranged between 65 and 156% for the various target analytes. Isotope dilution quantification using isotopically labelled internal surrogates was utilized to correct for signal suppression or enhancement and analyte losses during sample preparation. The method was evaluated by analysis of 20μL plasma micro-aliquots collected from zebrafish (Danio rerio) from a laboratory bioaccumulation study, which included control group fish (no exposure), as well as fish exposed to environmentally relevant concentrations of PPCPs. Using the developed LC-MS/MS based method, concentrations of the studied PPCPs were consistently detected in the low pg/μL (ppb) range. The method may be useful for investigations requiring fast, reliable concentration measurements of PPCPs in fish plasma. In particular, the method may be applicable for in situ contaminant biomonitoring, as well as

  10. Monitoring of nutrients, pesticides, and metals in waters, sediments, and fish of a wetland.

    Science.gov (United States)

    Salvadó, V; Quintana, X D; Hidalgo, M

    2006-10-01

    Wetland areas are of extraordinary importance for the conservation of wildlife. The Aiguamolls de l'Empordà Natural Park, located in Girona (northeast Spain), is one of the few areas in Europe acting as a way station for migratory birds. The natural park is made up of a brackish water reserve and a fresh water reserve. Agriculture and tourism, which are concentrated especially around coastal population centers, are the main activities in this area and result in the release into the environment of nutrients, pesticides, and heavy metals. This article aims to investigate the presence of nutrients, selected pesticides (organochlorine compounds, permethrin and triazines) and metals (Cr, Cu, Cd, Ni and Pb) in water, sediments, and fish samples. In the case of water, seasonal variations in levels of contamination were also monitored. Comparison was made of the fresh and brackish water reserves and concentration factors for metals and pesticides in sediment were determined. We conclude that the most significant sources of contamination in the natural park are from the entry of pesticides and nutrients into surface waters and sediments as a result of the intensive farming activity of the surrounding areas. The pesticides with the greatest presence were found to be lindane, heptachlor epoxide, permethrin, and atrazine. Among the metals analyzed, Cu and Cr presented the highest concentrations in surface waters and sediments.

  11. PARTICULARITIES AND MANAGEMENT OF THE DISTRIBUTION CHAIN FOR FISH AND FISHERY PRODUCTS

    Directory of Open Access Journals (Sweden)

    Carmen Georgeta NICOLAE

    2015-10-01

    Full Text Available The total quality principles implementation contributes to the improving in meeting the consumer needs, essential reduction of costs and increasing sales. The total quality is a concept that assures the total satisfaction of clients on the entire distribution chain, including all the actors in this chain. The aquaculture and fisheries are very diverse sectors which use different breeding and fishing technologies and provide a wide variety of specific products. This induces a real complexity of the supply and distribution chain for fish and fishery products, including the links from the production point (fishery or farm to the final consumer. The components of the distribution chain differ with the geographic areas, type of farms, transportation, information on the fishery market and management systems. Implementing the total food quality system for fishery products involves the quality specification in all marketing stages for all products, along the entire distribution chain. The present work was focused on identifying the distribution chain for fish and fishery products with the identification of the specificity of this type of chain form farm to end consumer, which is the first step in the implementation of total quality concept in aquaculture, with all the benefits that come with it.

  12. Data on volatile compounds in fermented materials used for salmon fish sauce production.

    Science.gov (United States)

    Nakano, Mitsutoshi; Sagane, Yoshimasa; Koizumi, Ryosuke; Nakazawa, Yozo; Yamazaki, Masao; Watanabe, Toshihiro; Takano, Katsumi; Sato, Hiroaki

    2018-02-01

    This article describes the analysis of volatile compounds in fermented materials used for salmon fish sauce production via gas chromatography/mass spectrometry (GC/MS). Ten types of fish sauces were produced from raw salmon materials, including various proportions of flesh, viscera, inedible portion (heads, fins, and backbones), and soft roe, by mixing them with salt and allowing them to ferment for up to three months. The volatile compounds were captured by a solid-phase microextraction method and then applied to GC/MS for separation and identification of the compounds in the fish sauce products. The number of volatile compounds identified in the starting materials varied from 15 to 29 depending on the ingredients. The number of compounds in the final fish sauce products was reduced by 3.4-94.7% of that in the original material. The retention times and names of the identified compounds, as well as their relative peak areas, are provided in a Microsoft Excel Worksheet.

  13. Radiological impact of the nuclear power plant accident on freshwater fish in Fukushima: An overview of monitoring results

    International Nuclear Information System (INIS)

    Wada, Toshihiro; Tomiya, Atsushi; Enomoto, Masahiro; Sato, Toshiyuki; Morishita, Daigo; Izumi, Shigehiko; Niizeki, Kouji; Suzuki, Shunji; Morita, Takami; Kawata, Gyo

    2016-01-01

    Radionuclide ("1"3"1I, "1"3"4Cs, and "1"3"7Cs) concentrations of monitored freshwater fish species collected from different habitats (rivers, lakes, and culture ponds) in Fukushima Prefecture during March 2011–December 2014 (total 16 species, n = 2692) were analyzed to present a detailed description of radionuclide contamination after the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident, and to elucidate species-specific spatiotemporal declining trends of "1"3"7Cs concentration for their respective habitats. Low concentrations of "1"3"1I (≤24 Bq kg"−"1-wet) were detected from only 11 samples collected during March–June 2011, demonstrating that "1"3"1I transferred to freshwater fish were not intense. In river and lake fishes, a more gradual decrease and higher radiocesium ("1"3"4Cs, "1"3"7Cs) concentrations were observed than in culture pond fishes, which strongly implied that radiocesium in freshwater fish species was mainly bioaccumulated through the food web in the wild. During 2011–2014, percentages above the Japanese regulatory limit of 100 Bq kg"−"1-wet for radiocesium in river and lake fish (14.0% and 39.6%, respectively) were higher than in monitored marine fish (9.9%), indicating longer-term contamination of freshwater fish species, especially in lakes. Higher radiocesium concentrations (maximum 18.7 kBq kg"−"1-wet in Oncorhynchus masou) were found in the northwestern areas from the FDNPP with higher deposition. However, radiocesium contamination levels were regarded as 1–2 orders of magnitude less than those after the Chernobyl accident. Lagged increase of "1"3"7Cs concentration and longer ecological half-lives (T_e_c_o: 1.2–2.6 y in the central part of Fukushima Prefecture) were observed in carnivorous salmonids (O. masou, Salvelinus leucomaenis), whereas a rapid increase and decrease of "1"3"7Cs concentration and shorter T_e_c_o (0.99 and 0.69 y) were found in herbivorous and planktivorous osmerids (Plecoglossus

  14. Lactobacillus genus identification isolated from gastrointestinal tract of chickens after bee products application using FISH and RTQ PCR methods

    Directory of Open Access Journals (Sweden)

    Miroslava Kačániová

    2013-05-01

    Full Text Available The general objective of this study was to examine the effect of bee products on the lactobacilli colonization of chickens. Bee products were administered to both feed mixtures in various amounts in addition to the control group. First experimental group was with propolis in feed mixture with the addition of 400 mg propolis per 1 kg of compound and second group was with pollen in feed mixture with the addition of 450 mg pollen per 1 kg of compound. In this experiment, quantitative counts of lactobacilli in ceca of 49-day-old chicken (Ross 308 using classical and FISH method were investigated. Counts of lactobacilli on MRS agar were monitored. To check the reliability of traditional methods of cultivation samples were evaluated by fluorescence in situ hybridization (FISH. Lactobacillus cells, isolated from gastrointestinal tract, were detected after hybridization of fluorescently labeled probe with bacterial cells. Counts of CFU of lactobacilli were compared in experimental and control treatments, respectively. The lowest count was detected in the control experimental group. The highest count was detected in the third experimental group where was 450 mg of pollen added to 1 kg of feed mixture. Using Real-time PCR method, we identified the species range of the genera Lactobacillus in the intestinal tract of broiler. Detected species from the genus Lactobacillus were L. crispatus, L. salivarius and L. acidophilus.

  15. Effects of changes in stock productivity and mixing on sustainable fishing and economic viability

    DEFF Research Database (Denmark)

    Bastardie, Francois; Nielsen, J. Rasmus; Eero, Margit

    2017-01-01

    Within the new FMSY European paradigm, this paper shows how a combination of changes in fish stock mixing, non-stationarity in productivity, and constraints on unit stock concepts undermine the effective management of fisheries, especially when management reference points are not adjusted...... accordingly. Recent changes in stock structures, conditions and stock mixing between eastern and western Baltic cod can jeopardize the reliability of stock assessments and of the fishery economy. We modelled how different management, individual vessel decision-making, and stock growth and mixing scenarios...... have induced alternative individual vessel spatial effort allocation and economic performance by affecting fishing costs and by changing the relative stock abundance and size distribution. Stock mixing heavily influences profit and stock abundance for stocks that have experienced increased fishing...

  16. Classification of photobacteria associated with spoilage of fish products by numerical taxanomy and pyrolysis mass spectrometry

    DEFF Research Database (Denmark)

    Dalgaard, Paw; Manfio, G.P.; Goodfellow, M.

    1997-01-01

    , from spoiled products and by using a specific detection method. The data were analysed using the similarity coefficient and the unweighted pair-group with arithmetic averages algorithm. In addition twenty-six of the fish isolates and five reference strains were analysed by Curie-point pyrolysis mass...... sub-groups. One sub-group of psychrotolerant P. phosphoreum strains, which was selected in modified atmosphere packed fish stored at low temperature, was also highlighted using each of the methods. The importance of classifying food spoilage bacteria has been shown and a simple key generated......Forty strains of luminous and non-luminous Photobacterium phosphoreum isolates from cod (Gadus morhua) and seven reference strains of psychrotolerant and mesophilic photobacteria were examined for 156 unit characters in a numerical taxonomic study. The fish strains were isolated from the intestines...

  17. Environmental monitoring at the La Grande Complex : evolution of fish mercury levels : summary report 1978-2000

    Energy Technology Data Exchange (ETDEWEB)

    Schetagne, R. [Hydro-Quebec, Montreal, PQ (Canada). Direction Barrages et Environnement; Therrien, J.; Lalumiere, R. [Genivar SEC, Montreal, PQ (Canada)

    2003-12-15

    In Northern Quebec, mercury has accumulated since the last ice age as a result of atmospheric fallout from natural sources such as the weathering of rocks in the earth's crust, forest fires and volcanoes, as well as from anthropogenic sources such as coal combustion and waste incineration. Mercury of atmospheric origin exists mainly in inorganic form, not readily assimilated by living organisms. In aquatic environments, it is converted to methylmercury by the bacteria that break down organic matter containing mercury which is readily assimilated by living organisms, travels through the food chain and accumulates in fish. The presence of mercury in the environment poses a potential concern as a result of the toxicity of methylmercury for humans, and especially Inuit communities through fish consumption. At the La Grande complex, mercury levels in the flesh of fish have been monitored since 1978, in both natural and modified environments. The main goals of the monitoring are to determine the temporal evolution of the increase in fish mercury levels in environments modified by the development of the La Grande hydroelectric complex, inform fish consumers and allow a comparison of the impacts actually measured with the effects predicted in the impact assessment studies. This report summarized results obtained between 1978 and 2000 at the La Grande complex. It included information presented in previous summary reports or articles as well as data from special studies and other hydroelectric projects. Specifically, the report provided a description of the study area and the hydroelectric developments; the rationale for the monitoring and the objectives; the prediction of the development's impacts; the methods used for the study; and, the results obtained in natural and modified environments. The main lessons learned and recommendations were also presented. 153 refs., 20 tabs., 45 figs., 1 appendix.

  18. Environmental monitoring at the La Grande Complex : evolution of fish mercury levels : summary report 1978-2000

    International Nuclear Information System (INIS)

    Schetagne, R.

    2003-12-01

    In Northern Quebec, mercury has accumulated since the last ice age as a result of atmospheric fallout from natural sources such as the weathering of rocks in the earth's crust, forest fires and volcanoes, as well as from anthropogenic sources such as coal combustion and waste incineration. Mercury of atmospheric origin exists mainly in inorganic form, not readily assimilated by living organisms. In aquatic environments, it is converted to methylmercury by the bacteria that break down organic matter containing mercury which is readily assimilated by living organisms, travels through the food chain and accumulates in fish. The presence of mercury in the environment poses a potential concern as a result of the toxicity of methylmercury for humans, and especially Inuit communities through fish consumption. At the La Grande complex, mercury levels in the flesh of fish have been monitored since 1978, in both natural and modified environments. The main goals of the monitoring are to determine the temporal evolution of the increase in fish mercury levels in environments modified by the development of the La Grande hydroelectric complex, inform fish consumers and allow a comparison of the impacts actually measured with the effects predicted in the impact assessment studies. This report summarized results obtained between 1978 and 2000 at the La Grande complex. It included information presented in previous summary reports or articles as well as data from special studies and other hydroelectric projects. Specifically, the report provided a description of the study area and the hydroelectric developments; the rationale for the monitoring and the objectives; the prediction of the development's impacts; the methods used for the study; and, the results obtained in natural and modified environments. The main lessons learned and recommendations were also presented. 153 refs., 20 tabs., 45 figs., 1 appendix.

  19. Studies on geo-morphology, ecology and fish production of the 92 rivers of Rajshahi Division, Bangladesh

    OpenAIRE

    Rahman, M.K.; Akhter, J.N.; Nima, A.; Ahmed, S.U.; Mazid, M.A.

    2003-01-01

    Geo-morphology, ecology and fish production of the 92 rivers of Rajshahi division have been presented in this paper. Fifteen rivers are dead and 11 rivers have severe erosion problem. Siltation has increased in 66 rivers and depth has decreased in 11 rivers. Sixty nine rivers are suffering from low flow conditions. Fish diversity has decreased in 20 rivers while fish production has declined in 75 rivers. A total of 31 fish species have extinct, 25 species are under threat of extinction and 43...

  20. Can natural variability trigger effects on fish and fish habitat as defined in environment Canada's metal mining environmental effects monitoring program?

    Science.gov (United States)

    Mackey, Robin; Rees, Cassandra; Wells, Kelly; Pham, Samantha; England, Kent

    2013-01-01

    The Metal Mining Effluent Regulations (MMER) took effect in 2002 and require most metal mining operations in Canada to complete environmental effects monitoring (EEM) programs. An "effect" under the MMER EEM program is considered any positive or negative statistically significant difference in fish population, fish usability, or benthic invertebrate community EEM-defined endpoints. Two consecutive studies with the same statistically significant differences trigger more intensive monitoring, including the characterization of extent and magnitude and investigation of cause. Standard EEM study designs do not require multiple reference areas or preexposure sampling, thus results and conclusions about mine effects are highly contingent on the selection of a near perfect reference area and are at risk of falsely labeling natural variation as mine related "effects." A case study was completed to characterize the natural variability in EEM-defined endpoints during preexposure or baseline conditions. This involved completing a typical EEM study in future reference and exposure lakes surrounding a proposed uranium (U) mine in northern Saskatchewan, Canada. Moon Lake was sampled as the future exposure area as it is currently proposed to receive effluent from the U mine. Two reference areas were used: Slush Lake for both the fish population and benthic invertebrate community surveys and Lake C as a second reference area for the benthic invertebrate community survey. Moon Lake, Slush Lake, and Lake C are located in the same drainage basin in close proximity to one another. All 3 lakes contained similar water quality, fish communities, aquatic habitat, and a sediment composition largely comprised of fine-textured particles. The fish population survey consisted of a nonlethal northern pike (Esox lucius) and a lethal yellow perch (Perca flavescens) survey. A comparison of the 5 benthic invertebrate community effect endpoints, 4 nonlethal northern pike population effect endpoints

  1. Aquaponics: integrating fish feeding rates and ion waste production for strawberry hydroponics

    International Nuclear Information System (INIS)

    Villarroel, M.; Alvarino, J. M. R.; Duran, J. M.

    2011-01-01

    Aquaponics is the science of integrating intensive fish aquaculture with plant production in recirculating water systems. Although ion waste production by f ish cannot satisfy all plant requirements, less is known about the relationship between total feed provided for f ish and the production of milliequivalents (mEq) of different macronutrients for plants, especially for nutrient flow hydroponics used for strawberry production in Spain. That knowledge is essential to consider the amount of macronutrients available in aquaculture systems so that farmers can estimate how much nutrient needs to be supplemented in the waste water from fish, to produce viable plant growth. In the present experiment, tilapia (Oreochromis niloticus L.) were grown in a small-scale recirculating system at two different densities while growth and feed consumption were noted every week for five weeks. At the same time points, water samples were taken to measure pH, EC 2 5, HCO3 - , Cl - , NH + 4 , NO 2 - , NO 3 - , H 2 PO 4 - , SO 4 2 -, Na + , K + , Ca 2 + and Mg 2 + build up. The total increase in mEq of each ion per kg of feed provided to the fish was highest for NO 3 - , followed, in decreasing order, by Ca 2 +, H 2 PO 4 - , K + , Mg 2 + and SO 4 2 -. The total amount of feed required per mEq ranged from 1.61- 13.1 kg for the four most abundant ions (NO 3 - , Ca 2 +, H 2 PO 4 - and K + ) at a density of 2 kg fish m3, suggesting that it would be rather easy to maintain small populations of fish to reduce the cost of hydroponic solution supplementation for strawberries. (Author) 16 refs.

  2. Long-term GPS tracking of ocean sunfish Mola mola offers a new direction in fish monitoring.

    Science.gov (United States)

    Sims, David W; Queiroz, Nuno; Humphries, Nicolas E; Lima, Fernando P; Hays, Graeme C

    2009-10-09

    Satellite tracking of large pelagic fish provides insights on free-ranging behaviour, distributions and population structuring. Up to now, such fish have been tracked remotely using two principal methods: direct positioning of transmitters by Argos polar-orbiting satellites, and satellite relay of tag-derived light-level data for post hoc track reconstruction. Error fields associated with positions determined by these methods range from hundreds of metres to hundreds of kilometres. However, low spatial accuracy of tracks masks important details, such as foraging patterns. Here we use a fast-acquisition global positioning system (Fastloc GPS) tag with remote data retrieval to track long-term movements, in near real time and position accuracy of GPS tagging to provide tracks of unparalleled accuracy for monitoring movements of large pelagic fish, and with nearly four times as many locations obtained by the GPS tag than by a conventional Argos transmitter. The results signal the potential of GPS-tagged pelagic fish that surface regularly to be detectors of resource 'hotspots' in the blue ocean and provides a new capability for understanding large pelagic fish behaviour and habitat use that is relevant to ocean management and species conservation.

  3. FISH AND SHELLFISH PRODUCTS DISTRIBUTED BY "ETHNIC" MINI-MARKET: CONFORMITY ASSESSMENT TO CURRENT LEGISLATION

    Directory of Open Access Journals (Sweden)

    I. Giorgi

    2012-08-01

    Full Text Available The purpose of this study was to conduct an assessment on the quality and methods for marketing of fish products sold by ethnic minimarket. Has been inspected 20 supermarkets and buyed 60 fish and shellfish samples. The neatness of the rooms were evaluated during the shopping in the markets. Products purchased in the supermarket (about three samples for each shop were brought in Ichthypathology laboratory of State Veterinary Institute of Piedmont, Liguria and Aosta Valley, in Turin. Were conducted in the laboratory the readings of the labels. The conditions of hygiene were poor, especially in supermarket freezers. Only 16 samples were labelled in accordance with current legislation. According to the results obtained, the products 'ethnic' distributed in the supermarkets visited, may be considered a potential risk to human health.

  4. First testing of an AUV mission planning and guidance system for water quality monitoring and fish behavior observation in net cage fish farming

    Directory of Open Access Journals (Sweden)

    D. Karimanzira

    2014-12-01

    Full Text Available Recently, underwater vehicles have become low cost, reliable and affordable platforms for performing various underwater tasks. While many aquaculture systems are closed with no harmful output, open net cage fish farms and land-based fish farms can discharge significant amounts of wastewater containing nutrients, chemicals, and pharmaceuticals that impact on the surrounding environment. Although aquaculture development has often occurred outside a regulatory framework, government oversight is increasingly common at both the seafood quality control level, and at baseline initiatives addressing the basic problem of pollution generated by culture operations, e.g. the European marine and maritime directives. This requires regular, sustainable and cost-effective monitoring of the water quality. Such monitoring needs devices to detect the water quality in a large sea area at different depths in real time. This paper presents a concept for a guidance system for a carrier (an autonomous underwater vehicle of such devices for the automated detection and analysis of water quality parameters.

  5. 20 years of monitoring of fishes and other organisms of the ocean and inland bodies of water

    International Nuclear Information System (INIS)

    Feldt, W.

    1981-01-01

    The monitoring of the fishes should be done in a way enabling to determine both the real and the possible radiation exposition of the population. Therefore, the investigations are mainly centered on the ecological parameters, radiation exposition of the population due to radioactive fall-out and radio-ecological findings. The state programmes of Schleswig-Holstein and Lower Saxony were established bearing this in mind (figures). (DG) [de

  6. Current problems of raw fish material processing while manufacturing dried products

    Directory of Open Access Journals (Sweden)

    Yashonkov A. A.

    2017-09-01

    Full Text Available The substantiation for using techniques of fish raw material canning has been presented, raw fish being caught or farmed in aquaculture. The main problems in raw fish canning have been reviewed, including significant reduction in thermolabile vitamins in the ultimate product as compared with the raw material due to the thermal processing. Promising canning technique – vacuum drying – has been proposed. This technique makes possible to reduce the temperature of thermal processing down to 50…55 °С and significantly enlarge preservation of thermolabile vitamins from the raw fish. Sampling of raw materials, semi-finished products, finished products, including preparation for analysis has been conducted by standard methods. Disadvantages of this way have been found, it is low energy efficiency of the process. The way to intensify the vacuum drying of aquatic organisms has been proposed based on the method of preliminary pore-forming due to augmenting the area of moisture evaporation. The design of the pilot plant has been proposed in order to research the process of pore forming and vacuum drying. Target species for processing have been suggested. They are as follows: Azov goby (fillet for food products and Black Sea sprat for feeds. The recipes of the feed mixture for granulated floating food for trout have been developed. The results of the first series of the pilot research have been provided. The experiments have proved that preliminary pore forming immediately before vacuum drying makes possible to enlarge the surface area of moisture evaporation by 15…25 %. By processing photomicrographs of sections by means of a special software the authors have got the results demonstrating that when manufacturing dried products by pore forming and drying under pressure 10 kPa the pore take 35...38 % of the inner volume of the product and with drying under pressure 10 kPa – only 18...21 %, and when drying under the atmospheric pressure – 11...13 %.

  7. Aquaponics: integrating fish feeding rates and ion waste production for strawberry hydroponics

    Energy Technology Data Exchange (ETDEWEB)

    Villarroel, M; Alvarino, J M. R.; Duran, J M

    2011-07-01

    Aquaponics is the science of integrating intensive fish aquaculture with plant production in recirculating water systems. Although ion waste production by fish cannot satisfy all plant requirements, less is known about the relationship between total feed provided for fish and the production of milliequivalents (mEq) of different macronutrients for plants, especially for nutrient flow hydroponics used for strawberry production in Spain. That knowledge is essential to consider the amount of macronutrients available in aquaculture systems so that farmers can estimate how much nutrient needs to be supplemented in the waste water from fish, to produce viable plant growth. In the present experiment, tilapia (Oreochromis niloticus L.) were grown in a small-scale recirculating system at two different densities while growth and feed consumption were noted every week for five weeks. At the same time points, water samples were taken to measure pH, EC25, HCO3{sup -}, Cl{sup -}, NH{sup +}{sub 4}, NO{sub 2}{sup -}, NO{sub 3}{sup -}, H{sub 2}PO{sub 4}{sup -}, SO{sub 4}{sup 2}-, Na{sup +}, K{sup +}, Ca{sup 2}+ and Mg{sup 2}+ build up. The total increase in mEq of each ion per kg of feed provided to the fish was highest for NO{sub 3}{sup -}, followed, in decreasing order, by Ca{sup 2}+, H{sub 2}PO{sub 4}{sup -}, K{sup +}, Mg{sup 2}+ and SO{sub 4}{sup 2}-. The total amount of feed required per mEq ranged from 1.61 - 13.1 kg for the four most abundant ions (NO{sub 3}{sup -}, Ca{sup 2}+, H{sub 2}PO{sub 4}{sup -} and K{sup +}) at a density of 2 kg fish m{sup -3}, suggesting that it would be rather easy to maintain small populations of fish to reduce the cost of hydroponic solution supplementation for strawberries. (Author) 16 refs.

  8. Fish preservation by combined treatment of curing and radiation. Part of a coordinated programme on radiation preservation of Asian fish and fishery products

    International Nuclear Information System (INIS)

    Maha, M.

    1979-10-01

    The combined treatment of potassium sorbate and irradiation to improve the keeping quality of traditional cured fish, e.g. salted fish, boiled fish and smoked fish packaged in polyethylene bags was studied. Low-dose irradiation for insect disinfestation of dried fish was also investigated. Irradiation treatment alone with doses up to 0.3 Mrad was not sufficient to prevent mold growth on semi-dried salted mackerel which contains approximately 6-11% of salt and 45-60% of moisture. Combined treatment of potassium sorbate and irradiation (200 r 400krad) was found to be effective in extending shelf-life of boiled and semi-dehydrated mackerel up to 5 weeks at ambient conditions. The shelf-life of comparable control samples was 2.5 weeks and for commercial boiled and semi-dried fish 3-7 days under the same conditions. The shelf-life of smoked milkfish, packaged in polyethylene bags and irradiated with 200 or 400krad was found to be 15 and 20 days respectively at ambient conditions as compared to 5 days for control samples. Dermestes maculatus was found to be the predominant pest infesting dried, smoked fish followed by Necrobia rufipes. A dose of 25krad was found to be sufficient to disinfest these insect species in the product

  9. Waste products of oilsands mine inhibit sex steroids in exposed fish

    International Nuclear Information System (INIS)

    Lister, A.; Van Der Kraak, G.J.; Nero, V.; Farwell, A.J.; Dixon, D.G.

    2002-01-01

    Mature fine tailings (MFT) and tailing pond water (TPW) are two of the wastes generated by oil sand mining operations at Syncrude Canada Ltd. in northern Alberta. A study was conducted to determine the impact of these wastes on reproductive steroid production in sexually mature goldfish. MFT is a toxic aqueous suspension consisting of organic acids, bitumen and metals. TPW is a saline solution consisting of both organic and inorganic contaminants. Goldfish were examined for 19 days in 3 of Syncrude's specially designed experimental ponds which were lined with or without MFT and capped with or without TPW. The study showed that plasma levels of testosterone and 17 β-estradiol in male and female fish in ponds with MFT but no TPW and ponds with both MFT and TPW were much lower compared to fish in a control pond with neither MFT nor TPW. The study also involved in vitro testis and ovarian incubations on the fish to determine potential differences in basal steroid production levels and how they react to gonadotropin. Results showed that gonadal tissues of fish from all ponds behaved similarly to the gonadotropin, thereby suggesting that under normal conditions, the oilsands wastes do not affect the ability of gonads to produce steroids. Compared to the control pond, both male and female fish from the pond with both MFT and TPW had significantly lower basal levels of testosterone, suggesting that the steroid inhibition could be caused at a site within the gonad. It was concluded that waste products of oilsands mining disrupt the reproductive endocrine system in goldfish

  10. Waste products of oilsands mine inhibit sex steroids in exposed fish

    Energy Technology Data Exchange (ETDEWEB)

    Lister, A.; Van Der Kraak, G.J. [Guelph Univ., ON (Canada); Nero, V.; Farwell, A.J.; Dixon, D.G. [Waterloo Univ., ON (Canada). Dept. of Biology

    2002-07-01

    Mature fine tailings (MFT) and tailing pond water (TPW) are two of the wastes generated by oil sand mining operations at Syncrude Canada Ltd. in northern Alberta. A study was conducted to determine the impact of these wastes on reproductive steroid production in sexually mature goldfish. MFT is a toxic aqueous suspension consisting of organic acids, bitumen and metals. TPW is a saline solution consisting of both organic and inorganic contaminants. Goldfish were examined for 19 days in 3 of Syncrude's specially designed experimental ponds which were lined with or without MFT and capped with or without TPW. The study showed that plasma levels of testosterone and 17 {beta}-estradiol in male and female fish in ponds with MFT but no TPW and ponds with both MFT and TPW were much lower compared to fish in a control pond with neither MFT nor TPW. The study also involved in vitro testis and ovarian incubations on the fish to determine potential differences in basal steroid production levels and how they react to gonadotropin. Results showed that gonadal tissues of fish from all ponds behaved similarly to the gonadotropin, thereby suggesting that under normal conditions, the oilsands wastes do not affect the ability of gonads to produce steroids. Compared to the control pond, both male and female fish from the pond with both MFT and TPW had significantly lower basal levels of testosterone, suggesting that the steroid inhibition could be caused at a site within the gonad. It was concluded that waste products of oilsands mining disrupt the reproductive endocrine system in goldfish.

  11. Concentrations of Elements in Hellbender Blood and Fish Fillets from the Missouri Department of Conservation Monitoring Programs

    Science.gov (United States)

    May, Thomas W.; Walther, Mike J.; Brumbaugh, William G.

    2007-01-01

    This report presents the results of contaminant monitoring surveys conducted annually by the Missouri Department of Conservation to examine the levels of selected elemental contaminants in hellbender (Cryptobranchus alleganiensis) blood and fish. Catfish (Ictalurus furcatus, Ictalurus punctatus, Pylodictis olivaris), redhorse (Moxostoma anisorum, Moxostoma erythrurum), bass (Micropterus salmoides, Micropterus punctulatus, Micropterus Lacepede, Ambloplites rupestris), walleye (Sander vitreus), and sunfish (Lepomis megalotis) were collected from 17 sites as part of the Department's General Contaminant Monitoring Program. Bluegill (Lepomis macrochirus) and other sunfish (Lepomis megalotis, Lepomis cyanellus) were collected from 18 sites as part of the Department's Resource Assessment and Monitoring Program. Blood from hellbenders was collected from seven sites as part of the Department's Hellbender Monitoring Program.

  12. Monitoring the recovery of a previously exploited surf-zone fish ...

    African Journals Online (AJOL)

    Limiting accessibility to a fishing area can reduce fishing effort effectively and may therefore promote local recovery of depleted stocks. In January 2002, beach driving was banned in South Africa, thereby reducing angler access to large areas of the coastline, particularly in less-developed areas. In November 2001 a project ...

  13. The Umatilla Basin Natural Production Monitoring and Evaluation Project, 2008 Annual Progress Report.

    Energy Technology Data Exchange (ETDEWEB)

    Contor, Craig R.; Harris, Robin; King, Marty [Confederated Tribes of the Umatilla Indian Reservation

    2009-06-10

    The Umatilla Basin Natural Production Monitoring and Evaluation Project (UBNPMEP) is funded by Bonneville Power Administration (BPA) as directed by section 4(h) of the Pacific Northwest Electric Power Planning and Conservation Act of 1980 (P.L.96-501). This project is in accordance with and pursuant to measures 4.2A, 4.3C.1, 7.1A.2, 7.1C.3, 7.1C.4 and 7.1D.2 of the Northwest Power Planning Council's (NPPC) Columbia River Basin Fish and Wildlife Program (NPPC 1994). Work was conducted by the Fisheries Program of the Confederated Tribes of the Umatilla Indian Reservation (CTUIR). The UBNPMEP is coordinated with two Oregon Department of Fish and Wildlife (ODFW) research projects that also monitor and evaluate the success of the Umatilla Fisheries Restoration Plan. This project deals with the natural production component of the plan, and the ODFW projects evaluate hatchery operations (project No. 1990-005-00, Umatilla Hatchery M & E) and smolt outmigration (project No. 1989-024-01, Evaluation of Juvenile Salmonid Outmigration and Survival in the Lower Umatilla River). Collectively these three projects monitor and evaluate natural and hatchery salmonid production in the Umatilla River Basin. The need for natural production monitoring has been identified in multiple planning documents including Wy-Kan-Ush-Mi Wa-Kish-Wit Volume I, 5b-13 (CRITFC 1996), the Umatilla Hatchery Master Plan (CTUIR & ODFW 1990), the Umatilla Basin Annual Operation Plan, the Umatilla Subbasin Summary (CTUIR & ODFW 2001), the Subbasin Plan (CTUIR & ODFW 2004), and the Comprehensive Research, Monitoring, and Evaluation Plan (CTUIR and ODFW 2006). Natural production monitoring and evaluation is also consistent with Section III, Basinwide Provisions, Strategy 9 of the 2000 Columbia River Basin Fish and Wildlife Program (NPPC 1994, NPCC 2004). The Umatilla Basin M&E plan developed along with efforts to restore natural populations of spring and fall Chinook salmon, (Oncorhynchus tshawytsha), coho

  14. Biomarkers in natural fish populations indicate adverse biological effects of offshore oil production.

    Directory of Open Access Journals (Sweden)

    Lennart Balk

    Full Text Available Despite the growing awareness of the necessity of a sustainable development, the global economy continues to depend largely on the consumption of non-renewable energy resources. One such energy resource is fossil oil extracted from the seabed at offshore oil platforms. This type of oil production causes continuous environmental pollution from drilling waste, discharge of large amounts of produced water, and accidental spills.Samples from natural populations of haddock (Melanogrammus aeglefinus and Atlantic cod (Gadus morhua in two North Sea areas with extensive oil production were investigated. Exposure to and uptake of polycyclic aromatic hydrocarbons (PAHs were demonstrated, and biomarker analyses revealed adverse biological effects, including induction of biotransformation enzymes, oxidative stress, altered fatty acid composition, and genotoxicity. Genotoxicity was reflected by a hepatic DNA adduct pattern typical for exposure to a mixture of PAHs. Control material was collected from a North Sea area without oil production and from remote Icelandic waters. The difference between the two control areas indicates significant background pollution in the North Sea.It is most remarkable to obtain biomarker responses in natural fish populations in the open sea that are similar to the biomarker responses in fish from highly polluted areas close to a point source. Risk assessment of various threats to the marine fish populations in the North Sea, such as overfishing, global warming, and eutrophication, should also take into account the ecologically relevant impact of offshore oil production.

  15. Analysis of integrated animal-fish production system under subtropical hill agro ecosystem in India: growth performance of animals, total biomass production and monetary benefit.

    Science.gov (United States)

    Kumaresan, A; Pathak, K A; Bujarbaruah, K M; Vinod, K

    2009-03-01

    The present study assessed the benefits of integration of animals with fish production in optimizing the bio mass production from unit land in subtropical hill agro ecosystem. Hampshire pigs and Khaki Campbell ducks were integrated with composite fish culture. The pig and duck excreta were directly allowed into the pond and no supplementary feed was given to fish during the period of study. The average levels of N, P and K in dried pig and duck manure were 0.9, 0.7 and 0.6 per cent and 1.3, 0.6 and 0.5 per cent, respectively. The average body weight of pig and duck at 11 months age was 90 and 1.74 kg with an average daily weight gain of 333.33 and 6.44 g, respectively. The fish production in pig-fish and duck-fish systems were 2209 and 2964 kg/ha, respectively while the fish productivity in control pond was only 820 kg/ha. The total biomass (animal and fish) production was higher (pfeeding system compared to the traditional system, however the input/output ratio was 1:1.2 and 1:1.55 for commercial and traditional systems, respectively. It was inferred that the total biomass production per unit land was high (pfish were integrated together.

  16. Source Array Support for Continuous Monitoring of Fish Population and Behavior by Instantaneous Continental-Shelf-Scale Imaging Using Ocean-Waveguide Acoustics

    National Research Council Canada - National Science Library

    Rynne, Ed; Gillette, David

    2006-01-01

    ...) Multistatic ASW Capability Enhancement Program (MACE) as the source of underwater sounds to support active bi-static sonar capabilities for monitoring fish populations and behaviors during a September/October 2006 sea test off the coast of Maine...

  17. Occupancy Models for Monitoring Marine Fish: A Bayesian Hierarchical Approach to Model Imperfect Detection with a Novel Gear Combination

    Science.gov (United States)

    Coggins, Lewis G.; Bacheler, Nathan M.; Gwinn, Daniel C.

    2014-01-01

    Occupancy models using incidence data collected repeatedly at sites across the range of a population are increasingly employed to infer patterns and processes influencing population distribution and dynamics. While such work is common in terrestrial systems, fewer examples exist in marine applications. This disparity likely exists because the replicate samples required by these models to account for imperfect detection are often impractical to obtain when surveying aquatic organisms, particularly fishes. We employ simultaneous sampling using fish traps and novel underwater camera observations to generate the requisite replicate samples for occupancy models of red snapper, a reef fish species. Since the replicate samples are collected simultaneously by multiple sampling devices, many typical problems encountered when obtaining replicate observations are avoided. Our results suggest that augmenting traditional fish trap sampling with camera observations not only doubled the probability of detecting red snapper in reef habitats off the Southeast coast of the United States, but supplied the necessary observations to infer factors influencing population distribution and abundance while accounting for imperfect detection. We found that detection probabilities tended to be higher for camera traps than traditional fish traps. Furthermore, camera trap detections were influenced by the current direction and turbidity of the water, indicating that collecting data on these variables is important for future monitoring. These models indicate that the distribution and abundance of this species is more heavily influenced by latitude and depth than by micro-scale reef characteristics lending credence to previous characterizations of red snapper as a reef habitat generalist. This study demonstrates the utility of simultaneous sampling devices, including camera traps, in aquatic environments to inform occupancy models and account for imperfect detection when describing factors

  18. Occupancy models for monitoring marine fish: a bayesian hierarchical approach to model imperfect detection with a novel gear combination.

    Directory of Open Access Journals (Sweden)

    Lewis G Coggins

    Full Text Available Occupancy models using incidence data collected repeatedly at sites across the range of a population are increasingly employed to infer patterns and processes influencing population distribution and dynamics. While such work is common in terrestrial systems, fewer examples exist in marine applications. This disparity likely exists because the replicate samples required by these models to account for imperfect detection are often impractical to obtain when surveying aquatic organisms, particularly fishes. We employ simultaneous sampling using fish traps and novel underwater camera observations to generate the requisite replicate samples for occupancy models of red snapper, a reef fish species. Since the replicate samples are collected simultaneously by multiple sampling devices, many typical problems encountered when obtaining replicate observations are avoided. Our results suggest that augmenting traditional fish trap sampling with camera observations not only doubled the probability of detecting red snapper in reef habitats off the Southeast coast of the United States, but supplied the necessary observations to infer factors influencing population distribution and abundance while accounting for imperfect detection. We found that detection probabilities tended to be higher for camera traps than traditional fish traps. Furthermore, camera trap detections were influenced by the current direction and turbidity of the water, indicating that collecting data on these variables is important for future monitoring. These models indicate that the distribution and abundance of this species is more heavily influenced by latitude and depth than by micro-scale reef characteristics lending credence to previous characterizations of red snapper as a reef habitat generalist. This study demonstrates the utility of simultaneous sampling devices, including camera traps, in aquatic environments to inform occupancy models and account for imperfect detection when

  19. Occupancy models for monitoring marine fish: a bayesian hierarchical approach to model imperfect detection with a novel gear combination.

    Science.gov (United States)

    Coggins, Lewis G; Bacheler, Nathan M; Gwinn, Daniel C

    2014-01-01

    Occupancy models using incidence data collected repeatedly at sites across the range of a population are increasingly employed to infer patterns and processes influencing population distribution and dynamics. While such work is common in terrestrial systems, fewer examples exist in marine applications. This disparity likely exists because the replicate samples required by these models to account for imperfect detection are often impractical to obtain when surveying aquatic organisms, particularly fishes. We employ simultaneous sampling using fish traps and novel underwater camera observations to generate the requisite replicate samples for occupancy models of red snapper, a reef fish species. Since the replicate samples are collected simultaneously by multiple sampling devices, many typical problems encountered when obtaining replicate observations are avoided. Our results suggest that augmenting traditional fish trap sampling with camera observations not only doubled the probability of detecting red snapper in reef habitats off the Southeast coast of the United States, but supplied the necessary observations to infer factors influencing population distribution and abundance while accounting for imperfect detection. We found that detection probabilities tended to be higher for camera traps than traditional fish traps. Furthermore, camera trap detections were influenced by the current direction and turbidity of the water, indicating that collecting data on these variables is important for future monitoring. These models indicate that the distribution and abundance of this species is more heavily influenced by latitude and depth than by micro-scale reef characteristics lending credence to previous characterizations of red snapper as a reef habitat generalist. This study demonstrates the utility of simultaneous sampling devices, including camera traps, in aquatic environments to inform occupancy models and account for imperfect detection when describing factors

  20. Long-term GPS tracking of ocean sunfish Mola mola offers a new direction in fish monitoring.

    Directory of Open Access Journals (Sweden)

    David W Sims

    Full Text Available Satellite tracking of large pelagic fish provides insights on free-ranging behaviour, distributions and population structuring. Up to now, such fish have been tracked remotely using two principal methods: direct positioning of transmitters by Argos polar-orbiting satellites, and satellite relay of tag-derived light-level data for post hoc track reconstruction. Error fields associated with positions determined by these methods range from hundreds of metres to hundreds of kilometres. However, low spatial accuracy of tracks masks important details, such as foraging patterns. Here we use a fast-acquisition global positioning system (Fastloc GPS tag with remote data retrieval to track long-term movements, in near real time and position accuracy of <70 m, of the world's largest bony fish, the ocean sunfish Mola mola. Search-like movements occurred over at least three distinct spatial scales. At fine scales, sunfish spent longer in highly localised areas with faster, straighter excursions between them. These 'stopovers' during long-distance movement appear consistent with finding and exploiting food patches. This demonstrates the feasibility of GPS tagging to provide tracks of unparalleled accuracy for monitoring movements of large pelagic fish, and with nearly four times as many locations obtained by the GPS tag than by a conventional Argos transmitter. The results signal the potential of GPS-tagged pelagic fish that surface regularly to be detectors of resource 'hotspots' in the blue ocean and provides a new capability for understanding large pelagic fish behaviour and habitat use that is relevant to ocean management and species conservation.

  1. Monitoring and control of protein production in fungi

    DEFF Research Database (Denmark)

    Schalén, Martin

    : • How is protein production affected on a single cell level due to environmental stress factors? • How can we improve heterologous protein production in filamentous fungi, and how does production in Aspergillus nidulans compare to protein production in the industrially exploited Aspergillus niger...... stress elements on the production of heterologous proteins in S. cerevisiae is investigated. A fluorescent reporter strain, producing an intracellular protein linked to tagRFP from the glycolytic PGK1 promoter is constructed. This strain is used to monitor the level of production in each cell when...... exposed to environmental stress. The cells are grown in shake flasks as well as bioreactors and protein levels are analyzed by flow cytometry. It is demonstrated that the fluorescent reporter can be used to study the effects on stress elements on a population basis. Production of the protein was affected...

  2. Fish production and diversity in the Paleocene-Eocene Thermal Maximum—Increased production but no novel faunas during a "Future Earth" analog

    Science.gov (United States)

    Tomczik, D. W.; Norris, R. D.; Gaskell, D. E.

    2014-12-01

    A partial analog for future global change is the Paleocene-Eocene Thermal Maximum—a transient episode of warming, acidification, and biogeographic change at ~55.5 Ma. The PETM is known to have triggered extinction in some deep sea biotas, extensive biogeographic range shifts, and the common occurrence of 'excursion biotas'—non-analog occurrences of species that are typically rare in the open ocean before or after the PETM. Here we report on the impact of the PETM on fish production and biodiversity. Our data include the mass accumulation rate of fish teeth and denticles as well as an analysis of tooth morphotypes for three PETM sites: ODP 1220 and 1209 in the Pacific, and ODP 1260 in the equatorial Atlantic. Tooth morphotypes hardly change through the PETM and consist of abundant midwater species (angler fish and flashlight fish) in addition to sharks and epipelagic fish. There is no evidence for a non-analog 'excursion biota' during the PETM, suggesting that fish experienced fewer geographic range shifts than the calcareous and organic-walled plankton where excursion biotas are commonplace. Fish mass accumulation rates are also relatively stable before and after the PETM although all sites show a transient rise in fish production at the onset of the PETM or within the later part of the "PETM Core". These results broadly match published estimates of PETM export production from biogenic barium fluxes. Our findings run counter to "Future Earth" models that use climate forecasts for the next century to predict the impact of global change on fish stocks. These models suggest that future warming and ocean stratification will decrease most tropical and subtropical ocean fish production, accentuate fish production in the boundary currents and generally shift production toward higher latitudes. A resolution of "Future Earth" models and PETM data may reflect the different timescales of observation and stages of ecological response to severe global change.

  3. Valuing multiple eelgrass ecosystem services in Sweden: fish production and uptake of carbon and nitrogen

    Directory of Open Access Journals (Sweden)

    Scott Glenn Cole

    2016-01-01

    Full Text Available Valuing nature’s benefits in monetary terms is necessary for policy-makers facing trade-offs in how to spend limited financial resources on environmental protection. We provide information to assess trade-offs associated with the management of seagrass beds, which provide a number of ecosystem services, but are presently impacted by many stressors. We develop an interdisciplinary framework for valuing multiple ecosystem services and apply it to the case of eelgrass (Zostera marina, a dominant seagrass species in the northern hemisphere. We identify and quantify links between three eelgrass functions (habitat for fish, carbon and nitrogen uptake and economic goods in Sweden, quantify these using ecological endpoints, estimate the marginal average value of the impact of losing one hectare of eelgrass along the Swedish northwest coast on welfare in monetary terms, and aggregate these values while considering double-counting. Over a 20 to 50 year period we find that compared to unvegetated habitats, a hectare of eelgrass, including the organic material accumulated in the sediment, produces an additional 626 kg cod fishes and 7,535 wrasse individuals and sequesters 98.6 ton carbon and 466 kg nitrogen. We value the flow of future benefits associated with commercial fishing, avoided climate change damages, and reduced eutrophication at 170,000 SEK in 2014 (20,700 US$ or 11,000 SEK (1,300 US$ annualized at 4%. Fish production, which is the most commonly valued ecosystem service in the seagrass literature, only represented 25% of the total value whereas a conservative estimate of nitrogen regulation constituted 46%, suggesting that most seagrass beds are undervalued. Comparing these values with historic losses of eelgrass we show that the Swedish northwest coast has suffered a substantial reduction in fish production and mineral regulation. Future work should improve the understanding of the geographic scale of eelgrass functions, how local variables

  4. Replacement of fish meal protein by surimi by-product protein in the diet of blue gourami Trichogaster trichopterus fingerlings.

    Science.gov (United States)

    Mohanta, K N; Subramanian, S; Korikanthimath, V S

    2013-02-01

    Based on the nutrient requirement of Trichogaster trichopterus, a fish meal-based basal diet with 350 g/kg diet crude protein and 16.7 MJ/kg energy was formulated, in which the fish meal protein was replaced by surimi by-product protein at 0.0 (control), 12.5, 25, 50, 75 and 100% levels. The formulated diets were fed ad libitum to T. trichopterus fingerlings (4.80 ± 0.03 g) in triplicate groups for 45 days in a closed water system. Eighteen fibre-reinforced plastic tanks with 200 l of water were used for rearing the fish. Weight gain, specific growth rate, feed/gain ratio, protein efficiency ratio, nutrient retention and digestibility (protein and energy) of fish were not affected (p > 0.05) up to 50% fish meal protein replacement level by surimi by-product protein. While whole-body protein content of fish was marginally decreased, the lipid content was increased with increase in surumi by-product incorporation level in the diet. The study results suggest that the fish meal protein, which is scarce and costly nowadays, could be replaced up to 50% by surimi by-product protein in the diet of blue gourami without hampering the growth and nutrient utilization of fish. © 2011 Blackwell Verlag GmbH.

  5. INVESTIGATION OF THE POSSIBILITY OF OBTAINING DRY BASES FROM PROCESSED FISH PRODUCTS OF LITTLE VALUE

    Directory of Open Access Journals (Sweden)

    O. P. Dvoryaninova

    2014-01-01

    Full Text Available Summary. Competitive advantages of this direction of researches are in justification of actions and offers on a technical provision of production of a dry fish basis from meat- and bone residue of pond fishes that will allow to produce fast foods of high quality and biological value (broths, soups, sauces, to expand the assortment taking into account market demand, to introduce the new forms of food convenient in storage and use at home and outside as well as for special food. The first courses on dry fish broth are easily digestible, with the high contents of micro and macro elements in the quantity of them they surpass meat broths. Their other advantage is the content of the polynonsaturated fatty acids neutralizing negative impact of substances, destroying tendons, ligaments and cartilage in the human body, thereby eliminating joint pains that is especially important for the determined groups of the population, for example, the military personnel, sportsmen, etc. In addition, this technology includes sparing modes of processing of raw materials, keeping thereby native properties of useful substances (protein, fat as much as possible. Researches on selection of an optimum ratio of the heads and the bones providing high organoleptic rates of broths on their basis were carried out to produce dry fish bases. Conditions and parameters of convective drying of little value products of cutting of silver carp and cod are determined. The results allow to draw a preliminary conclusion on the possibility of creation a new technology of powdery products for broths fast preparation. The developed technology is of great importance in the creation of waste-free and low-waste production at the enterprises of fishery industry of the Russian Federation.

  6. Electrochemical monitoring of citric acid production by Aspergillus niger

    International Nuclear Information System (INIS)

    Kutyła-Olesiuk, Anna; Wawrzyniak, Urszula E.; Ciosek, Patrycja; Wróblewski, Wojciech

    2014-01-01

    Highlights: • Citric acid fermentation process (production) by Aspergillus niger. • Qualitative/quantitative monitoring of standard culture and culture infected with yeast. • Electronic tongue based on potentiometric and voltammetric sensors. • Evaluation of the progress and the correctness of the fermentation process. • The highest classification abilities of the hybrid electronic tongue. - Abstract: Hybrid electronic tongue was developed for the monitoring of citric acid production by Aspergillus niger. The system based on various potentiometric/voltammetric sensors and appropriate chemometric techniques provided correct qualitative and quantitative classification of the samples collected during standard Aspergillus niger culture and culture infected with yeast. The performance of the proposed approach was compared with the monitoring of the fermentation process carried out using classical methods. The results obtained proved, that the designed hybrid electronic tongue was able to evaluate the progress and correctness of the fermentation process

  7. Electrochemical monitoring of citric acid production by Aspergillus niger

    Energy Technology Data Exchange (ETDEWEB)

    Kutyła-Olesiuk, Anna; Wawrzyniak, Urszula E.; Ciosek, Patrycja; Wróblewski, Wojciech, E-mail: wuwu@ch.pw.edu.pl

    2014-05-01

    Highlights: • Citric acid fermentation process (production) by Aspergillus niger. • Qualitative/quantitative monitoring of standard culture and culture infected with yeast. • Electronic tongue based on potentiometric and voltammetric sensors. • Evaluation of the progress and the correctness of the fermentation process. • The highest classification abilities of the hybrid electronic tongue. - Abstract: Hybrid electronic tongue was developed for the monitoring of citric acid production by Aspergillus niger. The system based on various potentiometric/voltammetric sensors and appropriate chemometric techniques provided correct qualitative and quantitative classification of the samples collected during standard Aspergillus niger culture and culture infected with yeast. The performance of the proposed approach was compared with the monitoring of the fermentation process carried out using classical methods. The results obtained proved, that the designed hybrid electronic tongue was able to evaluate the progress and correctness of the fermentation process.

  8. INCREASING FISH PRODUCTIVITY OF POND ECOSYSTEMS BY FERTILIZING THEM WITH DISTILLER'S GRAINS

    Directory of Open Access Journals (Sweden)

    N. Tson’

    2015-03-01

    Full Text Available Purpose. To study fish culture parameters of young-of-the-year carp in the conditions of industrial fish-growing ponds when applying experimental repeated fertilization with distiller’s grain. Methodology. The study was conducted in industrial fish-growing ponds. The wastes of alcohol industry – the distiller’s grain as organic fertilizer was gradually introduced into ponds at following amounts: first application – 1,0 t/ha, second application in 10 days – 0,5 t/ha, third application in 12 days – 0,5 t/ha. The control ponds were fertilized with humus (2 t/ha. Young-of-the-year carp (Cyprinus carpio were grown in monoculture at stocking density of 30 000 fish/ha. In addition, 100 kg/ha of lime were applied during the culture season in the experiment and control. Fertilization with humus and application of lime in ponds, hydrochemical studies, sampling and processing of hydrobiological samples, fish culturing and statistical studies were carried out according to standard methods. Findings. Gradual fertilizing with distiller’s grain (to the total 2 t/ha gave the possibility to create favorable hydrochemical and hydrobiological regimes. An average daily growth in the experimental fish groups of 0,44 ± 0,09 g/day that was similar to in the control (0,45 ± 0,11 g/day with positive significant correlation between them (r = 0,97; p <0,001 was achieved. The performed measures gave a possibility to obtain fish productivity in the experimental variant 10.7% more than in the control. An economic effect of 14.3% cost reduction for fertilizing ponds was achieved. Originality. For the first time we presented the results of fish culture and biological parameters of young-of-the-year carp in industrial ponds when applying 3-time fertilization with distiller’s grain. Practical Value. The obtained results are the basis for the broad use of non-traditional organic fertilizer – distiller’s grain in industrial ponds, when growing young

  9. Umatilla Basin Natural Production Monitoring and Evaluation; 1998-2002 Summary Report.

    Energy Technology Data Exchange (ETDEWEB)

    Contor, Craig R. (Confederated Tribes of the Umatilla Indian Reservation, Department of Natural Resources, Pendleton, OR)

    2004-07-01

    The Umatilla Basin Natural Production Monitoring and Evaluation Project (WWNPME) was funded by Bonneville Power Administration (BPA) as directed by section 4(h) of the Pacific Northwest Electric Power Planning and Conservation Act of 1980 (P. L. 96-501). This project is in accordance with and pursuant to measures 4.2A, 4.3C.1, 7.1A.2, 7.1C.3, 7.1C.4 and 7.1D.2 of the Northwest Power Planning Council's (NPPC) Columbia River Basin Fish and Wildlife Program (NPPC 1994). Work was conducted by the Fisheries Program of the Confederated Tribes of the Umatilla Indian Reservation (CTUIR) under the Umatilla Basin Natural Production Monitoring and Evaluation Project (UBNPME). Chapter One provides an overview of the entire report and shows how the objectives of each statement of work from 1999, 2000, 2001, and 2002 contract years are organized and reported. This chapter also provides background information relevant to the aquatic resources of the Umatilla River Basin. (Figure 1-1, Tables 1-1 and 1-2). Data and reports from this and previous efforts are available on the CTUIR website http://www.umatilla.nsn.us. This project was one of several subprojects of the Umatilla River Basin Fisheries Restoration Master Plan (CTUIR 1984, ODFW 1986) orchestrated to rehabilitate salmon and steelhead runs in the Umatilla River Basin. Subprojects in additions to this project include: Watershed Enhancement and Rehabilitation; Hatchery Construction and Operation; Hatchery Monitoring and Evaluation; Satellite Facility Construction and Operations for Juvenile Acclimation and Adult Holding and Spawning; Fish Passage Construction and Operation; Juvenile and Adult Passage Facility Evaluations; Evaluation of Juvenile Salmonid Outmigration and Survival in the Lower Umatilla River Basin, and Flow Augmentation to Increase Stream Flows below Irrigation Diversions.

  10. Effects from offshore oil production: chronic exposure of fish to produced water

    Energy Technology Data Exchange (ETDEWEB)

    Holth, Tor Fredrik

    2009-07-01

    bio markers used in monitoring of offshore produced water discharges should be further investigated. Response differences between the two species suggested that extrapolation between species could lead to under- or overestimation of effects depending on the parameter assessed. Effects in zebra fish following exposure to components of produced water could not be directly extrapolated to effects in Atlantic cod. In conclusion, the results of this study showed that exposure to environmentally relevant levels of PAHs and APs had clear effects on fish (LMS, DNA adducts, maturation, condition factor) , and that some markers currently used in environmental monitoring appeared not to be sufficiently sensitive for detecting effects of low contaminant levels (CYP1A, vitellogenin, AOX), or were adapted over time (EROD). In addition, effects on gene expression suggested that yet other pathways could be affected. There is thus a need for sensitive as well as alternative methods to better characterize the effects of produced water discharges. Sensitive methods exist for early detection of DNA damage in single cells (comet) as well as methods for determining fatty acid profiles and metabolism of steroids. Also, genetic tools should be further developed for species or taxonomic groups ecologically relevant to the North Sea as well as the Barents Sea. In addition, transcriptomic approaches indicated effects on several processes crucial to fish health, such as disease susceptibility, carcinogenesis, steroid metabolism and neurological alterations, which should be further investigated. (Author)

  11. The Infant Monitor of Vocal Production: Simple Beginnings

    Science.gov (United States)

    Moore, Robyn Cantle

    2014-01-01

    The Infant Monitor of vocal Production (IMP) was conceived as an educational strategy to help parents understand the nature and pace of their baby's vocal development following neonatal diagnosis and amplification for hearing loss. The potential for other clinical applications emerged with use. The instrument presents as a series of…

  12. Development, Production and Testing of 4500 Beam Loss Monitors

    CERN Document Server

    Holzer, E B; Dehning, B; Ferioli, G; Grishin, V; Jimenez, T M; Koshelev, A; Kramer, Daniel; Larionov, A; Taborelli, M; Seleznev, V; Sleptsov, M; Sytin, A; Wevers, I

    2008-01-01

    Beam-loss monitoring (BLM) [1] is a key element in the LHC machine protection. 4250 nitrogen filled ionization chambers (IC) and 350 secondary emission monitors (SEM) have been manufactured and tested at the Institute for High Energy Physics (IHEP) in Protvino, Russia, following their development at CERN. Signal speed and robustness against aging were the main design criteria. Each monitor is permanently sealed inside a stainless-steel cylinder. The quality of the welding was a critical aspect during production. The SEMs are requested to hold a vacuum of $10^{-7}$ bar. Impurity levels from thermal and radiationinduced desorption should remain in the range of parts per million in the ICs. To avoid radiation aging (up to $2·10^{8}$ Gy in 20 years) production of the chambers followed strict UHV requirements. IHEP designed and built the UHV production stand. Due to the required dynamic range of $10^{8}$, the leakage current of the monitors has to stay below 2 pA. Several tests during and after production were ...

  13. Bibliographic review of works accomplished about irradiated chicken, fish and fish products , spices and condiments; Levantamento bibliografico de trabalhos realizados sobre aves, peixes e produtos de peixe, especiarias e condimentos irradiados

    Energy Technology Data Exchange (ETDEWEB)

    Bernardes, B; Dias Filho, M

    1983-07-01

    Table of foods that can be irradiated and its respective nominal doses are shown. Bibliographic reviews of works performed about irradiated chicken, fish and fish products, spices and condiments are shown. The irradiation purpose in chicken were to increase the shelf-life and to eliminate the pathogenic microorganism in chicken stored below 10{sup 0} C; in fish and fish products the purposes were to control the insect infestation in dry-fish during the storage and the sell exposure to reduce the macrobian charge in packed and non packed fish and in fish products. To reduce pathogenic microorganism in packing and unpacking fish; in spices and condiments to control the insect infestation, to reduce the microbial contamination. (L.M.J.).

  14. Monitoring of fish species in the Lamone river: distribution and morphometric measures of the populations

    Directory of Open Access Journals (Sweden)

    Riccardo Bozzi

    2010-01-01

    Full Text Available Fish samplings were carried out monthly from spring to autumn during 2008, on the Lamone river and the Campigno stream by an electrofishing, in order to verify the presence of fish populations and the most common species represented. Barb, Barbus plebejus, Blageon, Leuciscus muticellus, Chub, Leuciscus cephalus, South European Nase, Chondrostoma genei were identified. A small population of Brown trout, Salmo trutta fario was also recognized. Barb is the most represented species in all the sites. The samplings highlight that Lamone river presented conditions suitable to fully guarantee the life of the fish populations.

  15. Clustering of commercial fish sauce products based on an e-panel technique

    Directory of Open Access Journals (Sweden)

    Mitsutoshi Nakano

    2018-02-01

    Full Text Available Fish sauce is a brownish liquid seasoning with a characteristic flavor that is produced in Asian countries and limited areas of Europe. The types of fish and shellfish and fermentation process used in its production depend on the region from which it derives. Variations in ingredients and fermentation procedures yield end products with different smells, tastes, and colors. For this data article, we employed an electronic panel (e-panel technique including an electronic nose (e-nose, electronic tongue (e-tongue, and electronic eye (e-eye, in which smell, taste, and color are evaluated by sensors instead of the human nose, tongue, and eye to avoid subjective error. The presented data comprise clustering of 46 commercially available fish sauce products based separate e-nose, e-tongue, and e-eye test results. Sensory intensity data from the e-nose, e-tongue, and e-eye were separately classified by cluster analysis and are shown in dendrograms. The hierarchical cluster analysis indicates major three groups on e-nose and e-tongue data, and major four groups on e-eye data.

  16. Hawaii Coral Reef Assessment and Monitoring Program (CRAMP): Fish Data from 2000 (NODC Accession 0000758)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This dataset consists of CRAMP surveys taken in 2000 and includes quantitative estimates of fish species richness, abundance, and biomass. There are 32 survey sites,...

  17. NCCOS USVI Fish Assessment and Monitoring Photographs, St. Croix, (2001 - Present)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The fish photo database provides anecdotal and permanent visual descriptions of benthic organisms, benthic habitat composition, substrate complexity, and other...

  18. St. John, USVI fish assessment and monitoring data (2001 - Present): 2011

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This fish and benthic composition database is the result of a multifaceted effort described below. The intent of this work is five fold: 1) To spatially characterize...

  19. St. Croix, USVI Fish Assessment and Monitoring Data (2001 - 2010) (NODC Accession 0125270 and 0125236)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This fish and benthic composition database is the result of a multifaceted effort described below. The intent of this work is five fold: 1) To spatially characterize...

  20. Integrated ecosystem assessment of Vieques, Puerto Rico Fish Assessment and Monitoring Data

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This fish and benthic composition database is the result of a multifaceted effort described below.The National Oceanic and Atmospheric Administration's (NOAA)...

  1. NCCOS Fish Assessment and Monitoring Photographs, St. John, USVI, (2001 - Present)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The fish photo database provides anecdotal and permanent visual descriptions of benthic organisms, benthic habitat composition, substrate complexity, and other...

  2. La Parguera, Puerto Rico Fish Assessment and Monitoring Data (2002 - Present)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This fish and benthic composition database is the result of a multifaceted effort described below. The intent of this work is five fold: 1) To spatially characterize...

  3. The Value and limitations of various approaches to the monitoring of water quality for freshwater fish

    National Research Council Canada - National Science Library

    1978-01-01

    ... tolerated by fish are known with some accuracy. Studies have shown that, for many contaminants, the water quality requirements for freshwater fisheries are more demanding than those for potable water...

  4. Integrated ecosystem assessment of Vieques, Puerto Rico Fish Assessment and Monitoring Data (NODC Accession 0125235)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This fish and benthic composition database is the result of a multifaceted effort described below. The National Oceanic and Atmospheric Administration?s (NOAA)...

  5. Hawaii Coral Reef Assessment and Monitoring Program (CRAMP): Fish Data from 2000 (NODC Accession 0000757)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This dataset consists of CRAMP surveys taken in 2000 and includes quantitative estimates of fish species richness, abundance, and biomass. There are 32 survey sites,...

  6. NCCOS Fish Assessment and Monitoring Photographs, La Parguera, Puerto Rico, (2001 - Present)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The fish photo database provides anecdotal and permanent visual descriptions of benthic organisms, benthic habitat composition, substrate complexity, and other...

  7. St. John, USVI fish assessment and monitoring data (2001 - 2011) (NODC Accession 0125236)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This fish and benthic composition database is the result of a multifaceted effort described below. The intent of this work is five fold: 1) To spatially characterize...

  8. National Coral Reef Monitoring Program: Coral Reef Fish collected in Fl Keys Reef Tract (2014)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Divers conducted reef visual census (RVC) fish surveys and habitat assessments at 433 sites in the Florida Keys, 436 sites in the Dry Tortugas and 320 sites in the...

  9. Hawaii Coral Reef Assessment and Monitoring Program (CRAMP): fish data from year 2000 (NODC Accession 0000757)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This dataset consists of CRAMP surveys taken in 2000 and includes quantitative estimates of fish species richness, abundance, and biomass. There are 32 survey sites,...

  10. Mobile sailing robot for automatic estimation of fish density and monitoring water quality.

    Science.gov (United States)

    Koprowski, Robert; Wróbel, Zygmunt; Kleszcz, Agnieszka; Wilczyński, Sławomir; Woźnica, Andrzej; Łozowski, Bartosz; Pilarczyk, Maciej; Karczewski, Jerzy; Migula, Paweł

    2013-07-01

    The paper presents the methodology and the algorithm developed to analyze sonar images focused on fish detection in small water bodies and measurement of their parameters: volume, depth and the GPS location. The final results are stored in a table and can be exported to any numerical environment for further analysis. The measurement method for estimating the number of fish using the automatic robot is based on a sequential calculation of the number of occurrences of fish on the set trajectory. The data analysis from the sonar concerned automatic recognition of fish using the methods of image analysis and processing. Image analysis algorithm, a mobile robot together with its control in the 2.4 GHz band and full cryptographic communication with the data archiving station was developed as part of this study. For the three model fish ponds where verification of fish catches was carried out (548, 171 and 226 individuals), the measurement error for the described method was not exceeded 8%. Created robot together with the developed software has features for remote work also in the variety of harsh weather and environmental conditions, is fully automated and can be remotely controlled using Internet. Designed system enables fish spatial location (GPS coordinates and the depth). The purpose of the robot is a non-invasive measurement of the number of fish in water reservoirs and a measurement of the quality of drinking water consumed by humans, especially in situations where local sources of pollution could have a significant impact on the quality of water collected for water treatment for people and when getting to these places is difficult. The systematically used robot equipped with the appropriate sensors, can be part of early warning system against the pollution of water used by humans (drinking water, natural swimming pools) which can be dangerous for their health.

  11. Microbiological assessment along the fish production chain of the Norwegian pelagic fisheries sector--Results from a spot sampling programme.

    Science.gov (United States)

    Svanevik, Cecilie Smith; Roiha, Irja Sunde; Levsen, Arne; Lunestad, Bjørn Tore

    2015-10-01

    Microbes play an important role in the degradation of fish products, thus better knowledge of the microbiological conditions throughout the fish production chain may help to optimise product quality and resource utilisation. This paper presents the results of a ten-year spot sampling programme (2005-2014) of the commercially most important pelagic fish species harvested in Norway. Fish-, surface-, and storage water samples were collected from fishing vessels and processing factories. Totally 1,181 samples were assessed with respect to microbiological quality, hygiene and food safety. We introduce a quality and safety assessment scheme for fresh pelagic fish recommending limits for heterotrophic plate counts (HPC), thermos tolerant coliforms, enterococci and Listeria monocytogenes. According to the scheme, in 25 of 41 samplings, sub-optimal conditions were found with respect to quality, whereas in 21 and 9 samplings, samples were not in compliance concerning hygiene and food safety, respectively. The present study has revealed that the quality of pelagic fish can be optimised by improving the hygiene conditions at some critical points at an early phase of the production chain. Thus, the proposed assessment scheme may provide a useful tool for the industry to optimise quality and maintain consumer safety of pelagic fishery products. Copyright © 2015 The Authors. Published by Elsevier Ltd.. All rights reserved.

  12. Monitoring and Modeling Farmland Productivity Along the Venice Coastland, Italy

    DEFF Research Database (Denmark)

    Manoli, G.; Bonetti, S.; Scudiero, E.

    2013-01-01

    The southern portion of the Venice coastland is a very precarious environment and salt contamination of land and groundwater is a severe problem that is seriously impacting the farmland productivity. Geophysical surveys, lab testing and continuous monitoring of hydrological parameters together wi...... model is linked to the atmosphere by the calculation of the stomatal conductance which is optimized for maximum carbon gain. The model is applied to the field site to understand the impact of land elevation, soil heterogeneities, and seawater contamination on land productivity.......The southern portion of the Venice coastland is a very precarious environment and salt contamination of land and groundwater is a severe problem that is seriously impacting the farmland productivity. Geophysical surveys, lab testing and continuous monitoring of hydrological parameters together...

  13. Metrology and monitoring of radon, thoron and their daughter products

    International Nuclear Information System (INIS)

    1985-01-01

    The principles of measurement and monitoring are described as applied to radon- and thoron gases and their daughter products in occupational and non-occupational environments. Various methods of measurement, such as grab-sampling, continuous monitoring, integrated measurements and personal dosimetry are discussed. Uncertainties in different measurement methods are compared. An account of unattached fraction and plateout of radon daughters is included. General principles and guidelines for monitoring are presented for the purposes of practical radiation protection as well as research applications. Calibration aspects of measurement instruments are described and procedures for interlaboratory calibration are suggested. Sampling strategies for occupational and non-occupational environments are discussed and radiation protection training requirements are identified. Where sufficient information and consensus exist, guidelines on apparatus, methods and procedures for monitoring are provided. A summary of regulations in force or being developed and recommendations for monitoring radiation exposure to radon and its decay products in countries of the OECD is provided, together with cost estimates for national indoor radon surveys

  14. Natural Food Additives and Preservatives for Fish-Paste Products: A Review of the Past, Present, and Future States of Research

    OpenAIRE

    Bashir, Khawaja Muhammad Imran; Kim, Jin-Soo; An, Jeong Hyeon; Sohn, Jae Hak; Choi, Jae-Suk

    2017-01-01

    Fish-paste products, also known as fish cakes or surimi-based products, are worldwide favorites. Surimi, a wet protein concentrate of fish muscle, is used as an intermediate raw material to produce surimi seafood. The flavor, texture, taste, shelf-life, and market value of surimi-based products depend on the source of the fish meat, type of applied heat treatment, and additives used to prepare the surimi. While preparing surimi with chemical additives, several problems have been observed, suc...

  15. Combination of potassium sorbate and irradiation treatments to extend the shelf-life cured fish products

    International Nuclear Information System (INIS)

    Maha, M.; Sudarman, H.; Chosdu, R.; Siagian, E.G.; Nasran, S.

    1981-01-01

    Studies on shelf-life extension of three kinds of cured fish product, i.e. salted chub mackerel (Rastrelliger neglectus), boiled chub mackerel (Rastrelliger neglectus) and smoked milkfish (Chanos chanos) have been done using a combined potassium sorbate and irradiation treatment. An integrated process for the preparation of each cured product provided with the combined treatment is described. Total bacterial count, total volatile base nitrogen, content of volatile reducing substances and mould growth were used as objective indices of quality in comparison with sensory evaluation to determine the shelf-life of the products held at ambient conditions. It was found that potassium sorbate residue of 0.1% level followed by irradiation up to 4 kGy could retard mould growth on the products and extend the shelf-life considerably in comparison with the commercially prepared products. (author)

  16. Combination of potassium sorbate and irradiation treatments to extend the shelf life of cured fish products

    International Nuclear Information System (INIS)

    Maha, M.; Sudarman, H.; Chosdu, R.; Siagian, E.G.

    1989-01-01

    Studies on shelf life extension of three kinds of cured fish products, i.e. salted chub mackeral (Rastrelliger neglectus), boiled chub mackerel (Rastrelliger neglectus) and smoked milkfish (Chanos chanos) have been made using a combined potassium sorbate and irradiation treatment. An integrated process for the preparation of each cured product provided with the combination treatment is described. Total bacterial count, total volatile base nitrogen, volatile reducing substances, and mould growth were used as objective indices of quality in comparison with sensory evaluation to determine the shelf life of the products held at ambient conditions. It was found that 0.1% potassium sorbate followed by irradiation up to 4 kGy retards mould growth on the products and extends the shelf life to a considerable length of time in comparison with the commercially prepared products. (author). 14 refs, 3 figs, 5 tabs

  17. Fish and fishery products trade in Brazil, 2005 to 2015: A review of available data and trends

    Directory of Open Access Journals (Sweden)

    Rafael Simões Coelho Barone

    Full Text Available ABSTRACT: Along the last ten years fish and fishery product trade in Brazil has been on a downward trajectory turning a profit of US$ 98.6 million in 2005 into a loss of US$ 1.25 billion by 2014. On the other hand, the country is a leading producer of grains and has the third largest animal feed industry in the world, which has added 5.5 million hectares of freshwater reservoirs and 3.5 million km2 of an exclusive marine economic zone in the same period, a sizable potential for development of the aquaculture industry. This study aims at unveiling strategies for the reduction of the deficit in the Brazilian seafood trade balance, based on critical analysis of the quantitative and qualitative characteristics of imported fishery products. The fish and fishery product trade in Brazil, from 2005 to 2015, was studied considering import and export data mined from the Brazilian Ministry of Development, Industry and Commerce databases through the Aliceweb system, and clustered as follows: processing; product species; origin; conservation; and group. The main imported products were gutted fresh fish, highest price (salmon; salted dried fish, higher price (cod; frozen fish fillets, lowest price (fish and hake. The replacement of fish imports by domestic production is not enough to enable consumers to identify the equivalence between products (technical, qualitative or organoleptic. Developing strategies for the production of fish and fishery products at competitive prices and quantities that meet consumer demand is an immediate need, and the development of the aquaculture industry a rational strategy.

  18. Enzymatic interesterification of vegetable oil/ fish oil blend for margarine production

    DEFF Research Database (Denmark)

    Ibrahim, Nuzul Amri Bin; Xu, Xuebing

    the desired properties. In this study, palm stearin (PS), palm kernel oil (PKO) and fish oil (FO) are blended and modified by enzymatic interesterification. PS functioned as the hard stock, PKO as the soft oil and FO as a source for eicosapentaenoic acid (EPA)/ docosahexaenoic acid (DHA). The purpose...... cause the product to be susceptible to oxidation due to the presence of high content of polyunsaturated fatty acids. Furthermore, FO could also influence the melting properties of the product. Therefore, in addition to determining the fatty acid position on the glycerol backbone, it is also pertinent...

  19. Determining potential adverse effects in marine fish exposed to pharmaceuticals and personal care products with the fish plasma model and whole-body tissue concentrations

    International Nuclear Information System (INIS)

    Meador, James P.; Yeh, Andrew; Gallagher, Evan P.

    2017-01-01

    The Fish Plasma Model (FPM) was applied to water exposure and tissue concentrations in fish collected from two wastewater treatment plant impacted estuarine sites. In this study we compared predicted fish plasma concentrations to Cmax values for humans, which represents the maximum plasma concentration for the minimum therapeutic dose. The results of this study show that predictions of plasma concentrations for a variety of pharmaceutical and personal care products (PPCPs) from effluent concentrations resulted in 37 compounds (54%) exceeding the response ratio (RR = Fish [Plasma]/1%Cmax total ) of 1 compared to 3 compounds (14%) detected with values generated with estuarine receiving water concentrations. When plasma concentrations were modeled from observed whole-body tissue residues, 16 compounds out of 24 detected for Chinook (67%) and 7 of 14 (50%) for sculpin resulted in an RR tissue value greater than 1, which highlights the importance of this dose metric over that using estuarine water. Because the tissue residue approach resulted in a high percentage of compounds with calculated response ratios exceeding a value of unity, we believe this is a more accurate representation for exposure in the field. Predicting plasma concentrations from tissue residues improves our ability to assess the potential for adverse effects in fish because exposure from all sources is captured. Tissue residues are also more likely to represent steady-state conditions compared to those from water exposure because of the inherent reduction in variability usually observed for field data and the time course for bioaccumulation. We also examined the RR in a toxic unit approach to highlight the importance of considering multiple compounds exhibiting a similar mechanism of action. - Highlights: • Fish Plasma Model (FPM) to assess risk based on water and fish tissue concentrations. • Plasma levels predicted with receiving water concentrations underestimate exposure for feral fish.

  20. Potential Fish Production Impacts from Partial Removal of Decommissioned Oil and Gas Platforms off the Coast of California

    Science.gov (United States)

    Claisse, J.; Pondella, D.; Love, M.; Zahn, L.; Williams, C.; Bull, A. S.

    2016-02-01

    When oil and gas platforms become obsolete they go through a decommissioning process. This may include partial removal (from the surface to 26 m depth) or complete removal of the platform structure. While complete removal would likely eliminate most of the existing fish biomass and associated secondary production, we find that the potential impacts of partial removal would likely be limited on all but one platform off the coast of California. On average 80% of fish biomass and 86% of secondary fish production would be retained after partial removal, with above 90% retention expected for both metrics on many platforms. Partial removal would likely result in the loss of fish biomass and production for species typically found residing in the shallow portions of the platform structure. However, these fishes generally represent a small proportion of the fishes associated with these platforms. More characteristic of platform fauna are the primarily deeper-dwelling rockfishes (genus Sebastes). "Shell mounds" are biogenic reefs that surround some of these platforms resulting from an accumulation of mollusk shells that have fallen from the shallow areas of the platforms mostly above the depth of partial removal. We found that shell mounds are moderately productive fish habitats, similar to or greater than natural rocky reefs in the region at comparable depths. The complexity and areal extent of these biogenic habitats, and the associated fish biomass and production, will likely be reduced after either partial or complete platform removal. Habitat augmentation by placing the partially removed platform superstructure or some other additional habitat enrichment material (e.g., rock boulders) on the seafloor adjacent to the base of partially removed platforms provides additional options to enhance fish production, potentially mitigating reductions in shell mound habitat.

  1. Strategies of performance self-monitoring in automotive production.

    Science.gov (United States)

    Faye, Hélène; Falzon, Pierre

    2009-09-01

    Production in the automotive industry, based on assembly line work, is now characterized by lean manufacturing and customization. This results in greater flexibility and increased quality demands, including worker performance self-monitoring. The objectives of this study are to refine the concept of performance self-monitoring and to characterize the strategies developed by operators to achieve it. Data were collected based on the method of individual auto-confrontation, consisting of two steps: eleven assembly-line operators of a French automotive company were individually observed and video-taped while they were working; an interview then allowed each operator to discuss his/her activity based on the video-tape. This study expands the concept of performance self-monitoring by highlighting three types of strategies directly oriented toward quality: prevention, feedback control and control action strategies.

  2. Umatilla Basin natural production monitoring and evaluation. Annual progress report, 1994--1995

    International Nuclear Information System (INIS)

    Contor, C.R.; Hoverson, E.; Kissner, P.; Volkman, J.

    1996-04-01

    This report summarizes the activities of the Umatilla Basin Natural Production Monitoring and Evaluation Project (UBNPME) from September 30, 1994 to September 29, 1995. This program was funded by Bonneville Power Administration and was managed under the Fisheries Program, Department of Natural Resources, Confederated Tribes of the Umatilla Indian Reservation. An estimated 36.7 km (22.6 miles) of stream habitat were inventoried on the Umatilla River, Moonshine, Mission, Cottonwood and Coonskin Creeks. A total of 384 of 3,652 (10.5%) habitat units were electrofished. The number of juvenile fish captured follows: 2,953 natural summer steelhead (including resident rainbow trout; Oncorhynchus mykiss), one hatchery steelhead, 341 natural chinook salmon (O. tshawytscha), 163 natural coho salmon (O. kisutch), five bull trout (Salvelinus confluentus), 185 mountain whitefish (Prosopium williamsoni), and six northern squawfish (Ptychoicheilus oregonensis). The expanded population estimate for the areas surveyed was 73,716 salmonids with a mean density of 0.38 fish/m 2 . Relative salmonid abundance, seasonal distribution and habitat utilization were monitored at index sites throughout the basin. During index site monitoring, the following species were collected in addition to those listed above: american shad (Alosa sapidissima), smallmouth bass (Micropterus dolomieu), carp (Cyprinus carpio) and chiselmouth (Acrocheilus alutaceus). Thirty-nine sites were electrofished during the spring and summer seasons, while 36 sites were sampled in the fall season. A study of the migration movements and homing requirements of adult salmonids in the Umatilla River was conducted during the 1994-95 return years. Radio telemetry was used to evaluate the movements of adult salmonids past diversion dams in the lower Umatilla River and to determine migrational movements of salmonids following upstream transport

  3. Monitoring residue in animals and primary products of animal origin

    Directory of Open Access Journals (Sweden)

    Janković Saša

    2008-01-01

    Full Text Available The objective of control and systematic monitoring of residue is to secure, by the examination of a corresponding number of samples, the efficient monitoring of the residue level in tissues and organs of animals, as well as in primary products of animal origin. This creates possibilities for the timely taking of measures toward the securing of food hygiene of animal origin and the protection of public health. Residue can be a consequence of the inadequate use of medicines in veterinary medicine and pesticides in agriculture and veterinary medicine, as well as the polluting of the environment with toxic elements, dioxins, polychlorinated biphenyls, and others. Residue is being monitored in Serbia since 1972, and in 2004, national monitoring was brought to the level of EU countries through significant investments by the Ministry of Agriculture, Forestry and Water Management. This is also evident in the EU directives which permit exports of all kinds of meat and primary products of animal origin, covered by the Residue Monitoring Program. The program of systematic examinations of residue has been coordinated with the requirements of the European Union, both according to the type of examined substance, as well as according to the number of samples and the applied analytical techniques. In addition to the development of methods and the including of new harmful substances into the monitoring programme, it is also necessary to coordinate the national regulations that define the maximum permitted quantities of certain medicines and contaminants with the EU regulations, in order to protect the health of consumers as efficiently as possible, and for the country to take equal part in international trade.

  4. A continuous spectrophotometric assay for monitoring adenosine 5'-monophosphate production.

    Science.gov (United States)

    First, Eric A

    2015-08-15

    A number of biologically important enzymes release adenosine 5'-monophosphate (AMP) as a product, including aminoacyl-tRNA synthetases, cyclic AMP (cAMP) phosphodiesterases, ubiquitin and ubiquitin-like ligases, DNA ligases, coenzyme A (CoA) ligases, polyA deadenylases, and ribonucleases. In contrast to the abundance of assays available for monitoring the conversion of adenosine 5'-triphosphate (ATP) to ADP, there are relatively few assays for monitoring the conversion of ATP (or cAMP) to AMP. In this article, we describe a homogeneous assay that continuously monitors the production of AMP. Specifically, we have coupled the conversion of AMP to inosine 5'-monophosphate (IMP) (by AMP deaminase) to the oxidation of IMP (by IMP dehydrogenase). This results in the reduction of oxidized nicotine adenine dinucleotide (NAD(+)) to reduced nicotine adenine dinucleotide (NADH), allowing AMP formation to be monitored by the change in the absorbance at 340 nm. Changes in AMP concentrations of 5 μM or more can be reliably detected. The ease of use and relatively low expense make the AMP assay suitable for both high-throughput screening and kinetic analyses. Copyright © 2015 Elsevier Inc. All rights reserved.

  5. Consumer purchasing behaviour towards fish and seafood products. Patterns and insights from a sample of international studies.

    Science.gov (United States)

    Carlucci, Domenico; Nocella, Giuseppe; De Devitiis, Biagia; Viscecchia, Rosaria; Bimbo, Francesco; Nardone, Gianluca

    2015-01-01

    The present systematic review was performed to assess consumer purchasing behaviour towards fish and seafood products in the wide context of developed countries. Web of Science, Scopus, ScienceDirect and Google Scholar engines were used to search the existing literature and a total of 49 studies were identified for inclusion. These studies investigated consumer purchasing behaviour towards a variety of fish and seafood products, in different countries and by means of different methodological approaches. In particular, the review identifies and discusses the main drivers and barriers of fish consumption as well as consumers' preferences about the most relevant attributes of fish and seafood products providing useful insights for both practitioners and policy makers. Finally, main gaps of the existing literature and possible trajectories for future research are also discussed. Copyright © 2014 Elsevier Ltd. All rights reserved.

  6. Specific radiological monitoring (SRM) in oil and gas production platforms

    International Nuclear Information System (INIS)

    Hairul Nizam Idris, Syed Asraf Fahlawi Wafa S.M Ghazi and Fadzley Izwan Abd Manaf

    2007-01-01

    Technologically enhanced naturally occurring radioactive materials (TENORM) are present in components of both oil and natural gas production facilities. TENORM can be associated with the presence of crude oil, produced water and natural gas. The radiation exposure pathways to the workers in oil and gas production are similar to those in the uranium and heavy mineral sand mining and processing industry. This paper work provides a short review on the Specific Radiological Monitoring (SRM) program were carried out at oil and gas platforms in the east cost of Peninsular Malaysia. The objective of this paper work is to observe the monitoring parameters levels and to evaluate whether these levels are exceeding the limits set by Atomic Energy Licensing Board (AELB). The monitoring results showed that the surface contamination, airborne contamination and concentration of radon and thoron are well below the set limit stipulated in LEM/TEK/30 SEM.2, except for external radiation and radioactivity concentration of sludge and scales. About 2 (2.35%) from the 85 external radiation measurements performed were found above the permissible limit. While about 11 (36.6%) and 7 (23.3%) of the 30 collected sludge and scales samples were found containing higher Ra-226 and Ra-228, respectively, than the mean concentrations in normal soils of Peninsular Malaysia. In general, it can be concluded that a few of oil and gas production platform are producing TENORM. (Author)

  7. Performance and lipid profiles of native chickens fed diet containing skipjack fish oil as by-product of fish canning factory

    Science.gov (United States)

    Leke, J. R.; Mandey, J. S.; Laihad, J. T.; Tinangon, R. M.; Tangkau, L.; Junus, C.

    2018-01-01

    The study was conducted to determine the use of fish oil as by-product of fish canning factory in diet on the performance and lipid profiles of native chickens. The experiment used 100 native chicken with an average initial body weight of 48,9 gram (sd + 9.9), was used in this study for 8 weeks experiment. These were arranged by a completely randomized design with 5 treatments, 5 replications and 4 hens in replication each. The diets were: R0 = 100% Based Diet (BD) + 0% Fish Oil (FO); R1 = 98.5% BD + 1.5% FO; R2 = 98% BD + 2% FO; R3 = 97.5% BD + 2.5% FO; R4 = 97 % BD + 3% FO. Feed and water were provided ad libitum. Variables were performance parameters and lipid profiles. Results showed that fish oil inclusion in diets were significantly increased feed intake, body weight gain, carcass percentage, liver, breast and thigh weight, and decreased blood cholesterol, carbohydrate and meat cholesterol, and also tended to decrease abdominal fat. However, there were no affected on feed conversion, water, protein, fat and ash of breast meat. It can be concluded that the use of fish oil in diet up to 3% could improved performance parameters of native chickens.

  8. Evaluation and identification of histamine-forming bacteria on fish products of middle Adriatic Sea

    Directory of Open Access Journals (Sweden)

    Rocco Mancusi

    2013-04-01

    Full Text Available Regulation EU 2073/2005 sets maximum concentration for histamine in fish and products thereof. To meet these criteria, manufacturers have to define performance objectives, such as the maximum allowed prevalence and number/activity of histamine-producing bacteria at relevant stage of production. In order to assess the presence and decarboxylase activity of contaminant bacteria we examined 51 samples of blue fish caught and processed in Emilia Romagna region. We collected 50 gr of fish (skin and gills or the entire product from 10 sample units from every lot. Analytical samples were cultured in Trypticase Soy Broth supplemented with histidine and pyridoxal HCl. Histamine was measured with an electrochemical biosensor after incubation at both 37°C for 24 h and 18-22°C for 48 h. Enrichments that showed relevant enzymatic activity were seeded on Niven agar to isolate suspected colonies and DNA extracts from these bacteria were analyzed by polymerase chain reaction (PCR for detecting specific sequences of the gene encoding pyridoxaldependent histidine decarboxylase (HDC. Overall, 29.4% samples showed relevant production of histamine in broth cultures (above a cut-off value set at 250 ng/mL and 53.3% of them (8 out of 15 samples allowed detection of HDC positive strains. All of them were typed as Morganella, which appears to be the most common of fish caught in middle Adriatic sea. Ten out of the twelve positive samples with enrichment cultures incubated at both 37 and 18-22°C (83% showed higher decarboxylase activity at room temperature, suggesting the presence of psychrotolerant strains. In addition, the prevalence of histamine-producing bacteria was higher at retail than at production level, probably as a consequence of manipulations and cross-contamination. The risk correlated to development of histamine-producing psychrotolerans bacteria cannot be controlled only with storage temperature: it is necessary for the food business operators to

  9. Extraction by Dry Rendering Methode and Characterization Fish Oil of Catfish (Pangasius hypopthalmus Viscera Fat by Product of Smooked Fish Processing

    Directory of Open Access Journals (Sweden)

    Kamini Kamini

    2016-12-01

    Full Text Available The catfish viscera fat, is cathfish processing by-products, has potential to be used as a source ofraw material for production of fish oil. This study aimed to analyze the value of proximate, heavy metalcontent and fatty acid profile of catfish viscera fat (Pangasius hypopthalmus and characterized fish oilextracted by dry rendering in various temperature and time than compared it to fish oil extracted by stoveheating to obtain the best treatment. Proximate, heavy metal residue, and the fatty acid profile analysiswere conducted for characterizing catfish viscera fat. Fish oil extraction was conducted by dry renderingin various temperatures of 50, 60, 70, 80 °C for 1, 2, and 3 hours. Fish oil quality was determined by thechemical characteristics i.e. PV, FFA, anisidin and TOTOX. The results of the study showed that fat contentof catfish fat viscera was 88.19 %, the heavy metals content was below SNI standart to be consumed, and fattyacid profile composition was SFA>MUFA>PUFA. The highest fatty acid content was oleic acid. The best fishoil quality was resulted on temperature extraction of 50°C for 2 hours with yield value, PV, FFA, anisidin,and TOTOX were 45.17 %, 2.77 meq/kg, 0.83 %, 2.86 meq/kg, 8.39 meq/kg respectively. This result was notsignificantly different with fish oil extracted by the stove heating expect for yield and PV were 80.11% and6.52 meq/kg, respectively.

  10. Limiting Size of Fish Fillets at the Center of the Plate Improves the Sustainability of Aquaculture Production

    Directory of Open Access Journals (Sweden)

    Stephen F. Cross

    2011-07-01

    Full Text Available North American dining customers like to have a singular large piece of protein in the center of the plate. When fish is the protein of choice, the portion size from many species is limited by the overall size of the fish. Therefore, for these species, the means to achieve a singular larger portion of “center of the plate” protein is to grow a larger animal. However, fish become less efficient in converting feed to protein as they age. A second option would be to provide two smaller fillets originating from younger, more efficient fish. Here, the sustainability ramifications of these two protein provisioning strategies (single large or two small fillets are considered for three species of fish produced in aquaculture. Growth data for channel catfish (Ictalurus punctatus produced in ponds, rainbow trout (Oncorhynchus mykiss in raceways, and sablefish (Anoplopoma fimbria in marine net pens, were modeled to assess the total biomass and overall food conversion ratio for the production of small, medium or large fish. The production of small fish added an additional 50% or more biomass per year for trout, catfish, and sablefish compared to the production of large fish. Feed conversion ratios were also improved by nearly 10% for the smaller compared to larger fish of each species. Thus, even though all of these species tend to be considered aquaculture species of low environmental impact (and hence “green” or sustainable options, the product form requested by retailers and served by chefs can further increase the sustainability of these species.

  11. Production optimization of flying fish roe analogs using calcium alginate hydrogel beads

    Directory of Open Access Journals (Sweden)

    Bom-Bi Ha

    2016-09-01

    Full Text Available Abstract Due to decreased supplies of marine resources and byproducts, new processing technologies for the development of analogs for natural fishery products are becoming increasingly important in the fishing industry. In the present study, we investigated the optimal processing conditions for flying fish roe analogs based on alginate hydrogels. Optimized processing of these analogs was performed by response surface methodology. The optimal processing conditions for the flying fish roe analogs (based on sphericity were at a sodium alginate concentration of 2.41 %, calcium chloride solution curing time of 40.65 min, calcium chloride concentration of 1.51 %, and a reactor stir speed of 254×g. When the experiment was performed under these optimized conditions, the size (mm, sphericity (%, and rupture strength (kPa of the analogs were 2.2 ± 0.12, 98.2 ± 0.2, and 762 ± 24.68, respectively, indicating physical properties similar to their natural counterparts.

  12. Methylmercury determination in fish and seafood products and estimated daily intake for the Spanish population.

    Science.gov (United States)

    Sahuquillo, I; Lagarda, M J; Silvestre, M D; Farré, R

    2007-08-01

    The mercury content of 25 samples of fish and seafood products most frequently consumed in Spain was determined. A simple method comprising cold vapour and atomic absorption spectrometry was used to determine separately inorganic and organic mercury. In all samples inorganic mercury content was below 50 microg kg(-1). There was wide variability, among not only the mercury levels of different fish species, but also for different samples of the same species - with the methylmercury content ranging from below 54 to 662 microg kg(-1). The highest mean methylmercury content was found in fresh tuna. Based on an average total fish consumption of 363 g/person week(-1), the methylmercury intake was estimated to be 46.2 microg/person week(-1). Therefore, the mercury intake of Spanish people with a body weight Food Additives (JECFA) provisional tolerable weekly intake (PTWI) of 1.6 microg kg(-1) body weight, but exceeds the US National Research Council (NRC) limit of 0.7 microg kg(-1) body weight week(-1) based on a benchmark dose.

  13. Storage stability and improved quality of fish products by enzyme suppression and gamma-irradiation

    International Nuclear Information System (INIS)

    Ninjoor, V.; Doke, S.N.; Nadkarni, G.B.

    1981-01-01

    The occurrence and distribution of lysosomal hydrolases in the skeletal muscle and skin of a variety of fish species have been demonstrated. As compared with the skeletal muscle, the skin contained two to ten times more activity of hydrolytic enzymes. In the case of Bombay duck (Harpodon nehereus), the drip represented a rich source of lysosomal enzymes. The involvement of these hydrolases in accentuating fish spoilage was examined by measuring the release of cathepsin D and accumulated hydrolytic end-products during progressive autolysis. The data showed that the shelf-life of fresh-water fish Tilapia mossambica could be extended by removing the skin, while that of Bombay duck by eliminating drip. Sodium tripolyphosphate (NaTPP) dip treatment was shown to inhibit the activity of lysosomal hydrolases of Bombay duck. Combination treatment consisting of NaTPP dip and irradiation (100 krad) resulted in a two-week extension in the shelf-life of Bombay duck fillets when stored at 0-4 0 C. (author)

  14. Discovering hidden biodiversity: the use of complementary monitoring of fish diet based on DNA barcoding in freshwater ecosystems.

    Science.gov (United States)

    Jo, Hyunbin; Ventura, Marc; Vidal, Nicolas; Gim, Jeong-Soo; Buchaca, Teresa; Barmuta, Leon A; Jeppesen, Erik; Joo, Gea-Jae

    2016-01-01

    Ecological monitoring contributes to the understanding of complex ecosystem functions. The diets of fish reflect the surrounding environment and habitats and may, therefore, act as useful integrating indicators of environmental status. It is, however, often difficult to visually identify items in gut contents to species level due to digestion of soft-bodied prey beyond visual recognition, but new tools rendering this possible are now becoming available. We used a molecular approach to determine the species identities of consumed diet items of an introduced generalist feeder, brown trout (Salmo trutta), in 10 Tasmanian lakes and compared the results with those obtained from visual quantification of stomach contents. We obtained 44 unique taxa (OTUs) belonging to five phyla, including seven classes, using the barcode of life approach from cytochrome oxidase I (COI). Compared with visual quantification, DNA analysis showed greater accuracy, yielding a 1.4-fold higher number of OTUs. Rarefaction curve analysis showed saturation of visually inspected taxa, while the curves from the DNA barcode did not saturate. The OTUs with the highest proportions of haplotypes were the families of terrestrial insects Formicidae, Chrysomelidae, and Torbidae and the freshwater Chironomidae. Haplotype occurrence per lake was negatively correlated with lake depth and transparency. Nearly all haplotypes were only found in one fish gut from a single lake. Our results indicate that DNA barcoding of fish diets is a useful and complementary method for discovering hidden biodiversity.

  15. Physiological and ecological effects of increasing temperature on fish production in lakes of Arctic Alaska

    Science.gov (United States)

    Carey, Michael P.; Zimmerman, Christian E.

    2014-01-01

    Lake ecosystems in the Arctic are changing rapidly due to climate warming. Lakes are sensitive integrators of climate-induced changes and prominent features across the Arctic landscape, especially in lowland permafrost regions such as the Arctic Coastal Plain of Alaska. Despite many studies on the implications of climate warming, how fish populations will respond to lake changes is uncertain for Arctic ecosystems. Least Cisco (Coregonus sardinella) is a bellwether for Arctic lakes as an important consumer and prey resource. To explore the consequences of climate warming, we used a bioenergetics model to simulate changes in Least Cisco production under future climate scenarios for lakes on the Arctic Coastal Plain. First, we used current temperatures to fit Least Cisco consumption to observed annual growth. We then estimated growth, holding food availability, and then feeding rate constant, for future projections of temperature. Projected warmer water temperatures resulted in reduced Least Cisco production, especially for larger size classes, when food availability was held constant. While holding feeding rate constant, production of Least Cisco increased under all future scenarios with progressively more growth in warmer temperatures. Higher variability occurred with longer projections of time mirroring the expanding uncertainty in climate predictions further into the future. In addition to direct temperature effects on Least Cisco growth, we also considered changes in lake ice phenology and prey resources for Least Cisco. A shorter period of ice cover resulted in increased production, similar to warming temperatures. Altering prey quality had a larger effect on fish production in summer than winter and increased relative growth of younger rather than older age classes of Least Cisco. Overall, we predicted increased production of Least Cisco due to climate warming in lakes of Arctic Alaska. Understanding the implications of increased production of Least Cisco to

  16. Development of Product Availability Monitoring System In Production Unit In Automotive Component Industry

    Science.gov (United States)

    Hartono, Rachmad; Raharno, Sri; Yuwana Martawirya, Yatna; Arthaya, Bagus

    2018-03-01

    This paper described a methodology to monitor the availability of products in a production unit in the automotive component industry. Automotive components made are automotive components made through sheet metal working. Raw material coming into production unit in the form of pieces of plates that have a certain size. Raw materials that come stored in the warehouse. Data of raw each material in the warehouse are recorded and stored in a data base system. The material will then undergo several production processes in the production unit. When the material is taken from the warehouse, material data are also recorded and stored in a data base. The data recorded are the amount of material, material type, and date when the material is out of the warehouse. The material coming out of the warehouse is labeled with information related to the production processes that the material must pass. Material out of the warehouse is a product will be made. The products have been completed, are stored in the warehouse products. When the product is entered into the product warehouse, product data is also recorded by scanning the barcode contained on the label. By recording the condition of the product at each stage of production, we can know the availability of the product in a production unit in the form of a raw material, the product being processed and the finished product.

  17. Toxin production by Clostridium Botulinum type B (proteolitic) in radurized raw fish

    International Nuclear Information System (INIS)

    Suhadi, F.

    1978-01-01

    The earliest toxin production by three proteolytic strains of Cl. botulinum type B was determined in irradiated and unirradiated raw fish (Rastrelliger sp., Euthynnus sp., and Scomberomorus sp.) under the storage temperatures of 20, 10, and 5degC. The estimation of maximum storage life was evaluated by an untrained panel on uninoculated fish samples and in parellel the total bacterial counts were also determined. Percentage data of the toxic samples were analyzed according to a fully randomized design involving factorial treatments. In unirradiated samples with inoculum levels of 10 2 -10 6 spores per gram and stored at 20degC, the earliest toxin production was detected after the samples were spoiled. While in irradiated samples toxin were detected before the end of the storage life or after the samples were spoiled, depending on the levels of inoculum. In general, both in unirradiated and irradiated samples inoculated with 10 2 -10 6 spores per gram and stored at 10degC, the earlieast toxin production was detected after the samples were spoiled. While the samples were stored at 5degC, no toxic samples were found up to 30 days of storage when the experiment were terminated. The percentage of toxic samples was shown highly effected by type B strains, fish species, inoculum levels and storage time, when the storage temperature is 20degC. But no significant difference was found after treatment with irradiation doses. In general the interaction effects between those treatments on the percentage of toxic samples showed no significant difference. (author)

  18. Studies on qualitative and quantitative chemical changes in gamma irradiated fish and fishery products in India

    International Nuclear Information System (INIS)

    Bandyopadhyay, C.; Rao, B.Y.K.

    1981-01-01

    Studies on qualitative and quantitative changes in lipids and allied constituents of fresh as well as salted dehydrated Indian mackerel (Rastrelliger kanagurta) during storage after gamma-irradiation have been carried out. The samples were evaluated subjectively as well by determining various physico-chemical parameters such as moisture content, total volatile basic nitrogen (TVBN), trimethyl amine nitrogen (TMAN), lipid content, iodine value (IV), peroxide value (PV), thiobarbituric acid (TBA) value, glyceride and free fatty acid (FFA) content. Shelf life extension of radurized fresh (150 Krad) as well as salted dehydrated (200 Krad) Indian mackerel during ice-temperature (0-2 0 C) and ambient temperature (25-30 0 C) storage, respectively, was observed without detectable rancidity and off-flavours. However, the extended storage life was dependent upon storage temperature in the case of fresh fish and upon moisture content in the case of salted dehydrated fish. Besides a suppression in TVBN and TMAN values, the changes in the physico-chemical parameters including the lipid composition of the irradiated samples in both cases were parallel to those in the unirradiated controls. No new compounds were detected in any of the lipid samples of the irradiated fish by thin-layer gas-liquid chromatography. Pasteurization dose of irradiation (200 Krad) did not influence the yield or the composition of the total volatiles of salted dehydrated fish. The commercial sun-dried products gave rise to two-fold increases in the yield of total volatiles, which showed composition comparable to that of the laboratory processed irradiated samples

  19. Connectedness of land use, nutrients, primary production, and fish assemblages in oxbow lakes

    Science.gov (United States)

    Miranda, Leandro E.; Andrews, Caroline S.; Kroger, Robert

    2013-01-01

    We explored the strength of connectedness among hierarchical system components associated with oxbow lakes in the alluvial valley of the Lower Mississippi River. Specifically, we examined the degree of canonical correlation between land use (agriculture and forests), lake morphometry (depth and size), nutrients (total nitrogen and total phosphorus), primary production (chlorophyll-a), and various fish assemblage descriptors. Watershed (p < 0.01) and riparian (p = 0.02) land use, and lake depth (p = 0.05) but not size (p = 0.28), were associated with nutrient concentrations. In turn, nutrients were associated with primary production (p < 0.01), and primary production was associated with sunfish (Centrarchidae) assemblages (p < 0.01) and fish biodiversity (p = 0.08), but not with those of other taxa and functional guilds. Multiple chemical and biological components of oxbow lake ecosystems are connected to landscape characteristics such as land use and lake depth. Therefore, a top-down hierarchical approach can be useful in developing management and conservation plans for oxbow lakes in a region impacted by widespread landscape changes due to agriculture.

  20. Flavour components of some processed. fish and fishery products of Japan

    OpenAIRE

    Mansur, M.A.; Hossain, M.I.; Takamuro, H.; Matoba, T.

    2002-01-01

    A study was conducted to examine the flavour components of some processed fish and fishery products of Japan by gas chromatography-mass spectrometry (GC-MS). In brief the method was to absorb the headspace volatiles at 70°C into the fused silica fibre of needle of the solid phase micro extraction fibre. The absorbed components were injected to the GC-MS. The components were identified by computer matching with library database as well as by authentic standard components. In gen...

  1. Uptake and Tissue Distribution of Pharmaceuticals and Personal Care Products in Wild Fish from Treated-Wastewater-Impacted Streams.

    Science.gov (United States)

    Tanoue, Rumi; Nomiyama, Kei; Nakamura, Haruna; Kim, Joon-Woo; Isobe, Tomohiko; Shinohara, Ryota; Kunisue, Tatsuya; Tanabe, Shinsuke

    2015-10-06

    A fish plasma model (FPM) has been proposed as a screening technique to prioritize potential hazardous pharmaceuticals to wild fish. However, this approach does not account for inter- or intraspecies variability of pharmacokinetic and pharmacodynamic parameters. The present study elucidated the uptake potency (from ambient water), tissue distribution, and biological risk of 20 pharmaceutical and personal care product (PPCP) residues in wild cyprinoid fish inhabiting treated-wastewater-impacted streams. In order to clarify the uncertainty of the FPM for PPCPs, we compared the plasma bioaccumulation factor in the field (BAFplasma = measured fish plasma/ambient water concentration ratio) with the predicted plasma bioconcentration factor (BCFplasma = fish plasma predicted by use of theoretical partition coefficients/ambient water concentration ratio) in the actual environment. As a result, the measured maximum BAFplasma of inflammatory agents was up to 17 times higher than theoretical BCFplasma values, leading to possible underestimation of toxicological risk on wild fish. When the tissue-blood partition coefficients (tissue/blood concentration ratios) of PPCPs were estimated, higher transportability into tissues, especially the brain, was found for psychotropic agents, but brain/plasma ratios widely varied among individual fish (up to 28-fold). In the present study, we provide a valuable data set on the intraspecies variability of PPCP pharmacokinetics, and our results emphasize the importance of determining PPCP concentrations in possible target organs as well as in the blood to assess the risk of PPCPs on wild fish.

  2. Continuous Monitoring of Photolysis Products by Thz Spectroscopy

    Science.gov (United States)

    Omar, Abdelaziz; Cuisset, Arnaud; Mouret, Gaël; Hindle, Francis; Eliet, Sophie; Bocquet, Robin

    2015-06-01

    We demonstrate the potential of THz spectroscopy to monitor the real time evolution of the gas phase concentration of photolysis products and determine the kinetic reaction rate constant. In the primary work, we have chosen to examine the photolysis of formaldehyde (H_2CO). Exposure of H_2CO to a UVB light (250 to 360 nm) in a single pass of 135 cm length cell leads to decomposition via two mechanisms: the radical channel with production of HCO and the molecular channel with production of CO. A commercial THz source (frequency multiplication chain) operating in the range 600-900 GHz was used to detect and quantify the various chemical species as a function of time. Monitoring the concentrations of CO and H_2CO via rotational transitions, allowed the kinetic rate of H_2CO consummation to be obtained, and an estimation of the rate constants for both the molecular and radical photolysis mechanisms. We have modified our experimental setup to increase the sensitivity of the spectrometer and changed sample preparation protocol specifically to quantify the HCO concentration. Acetaldehyde was used as the precursor for photolysis by UVC resulting in the decompositon mechanism can be described by: CH_3CHO+hν→ CH_3 + HCO → CH_4 + CO Frequency modulation of the source and Zeeman modulation is used to achieve the high sensitivity required. Particular attention has been paid to the mercury photosensitization effect that allowed us to increase the HCO production enabling quantification of the monitored radical. We quantify the HCO radical and start a spectroscopic study of the line positions. H. M. Pickett and T. L. Boyd, Chem. Phys. Lett, Vol 58, 446-449, (1978) S. Eliet, A. Cuisset, M Guinet, F. Hindle, G. Mouret, R. Bocquet, and J. Demaison, Journal of Molecular Spectroscopy, Vol 279, 12-15 (2012). G. Mouret, M. Guinet, A. Cuisset, L. Croizé, S. Eliet, R. Bocquet and F. Hindle, Sensors Journal. IEEE, Vol 13, 133 - 138, (2013)

  3. Idaho Habitat/Natural Production Monitoring Part I, 1994 Annual Report.

    Energy Technology Data Exchange (ETDEWEB)

    Hall-Griswold, Judy A.; Leitzinger, Eric J.; Petrosky, C.E. (Idaho Department of Fish and Game, Boise, ID

    1995-11-01

    A total of 333 stream sections were sampled in 1994 to monitor in chinook salmon and steelhead trout parr populations in Idaho. Percent carry capacity and density estimates were summarized by different classes of fish: wild A-run steelhead trout, wild B-run steelhead trout, natural A-run steelhead trout, natural B-run steelhead trout, wild spring and summer chinook salmon. These data were also summarized by cells and subbasins as defined in Idaho Department of Fish and Game`s 1992-1996 Anadromous Fish Management Plan.

  4. Monitor and Protect Wigwam River Bull Trout for Koocanusa Reservoir; Skookumchuck Creek Juvenile Bull Trout and Fish Habitat Monitoring Program, Annual Report 2002.

    Energy Technology Data Exchange (ETDEWEB)

    Cope, R.

    2003-06-01

    The Skookumchuck Creek juvenile bull trout (Salvelinus confluentus) and fish habitat-monitoring program is a co-operative initiative of the British Columbia Ministry of Water, Land, and Air Protection and Bonneville Power Administration. This project was commissioned in planning for fish habitat protection and forest development within the Skookumchuck Creek watershed and was intended to expand upon similar studies initiated within the Wigwam River from 2000 to 2002. The broad intent is to develop a better understanding of juvenile bull trout and Westslope cutthroat trout recruitment and the ongoing hydrologic and morphologic processes, especially as they relate to spawning and rearing habitat quality. The 2002 project year represents the first year of a long-term bull trout-monitoring program with current studies focused on collecting baseline information. This report provides a summary of results obtained to date. Bull trout represented 72.4% of the catch. Fry dominated the catch because site selection was biased towards electrofishing sample sites which favored high bull trout fry capture success. The mean density of all juvenile bull trout was estimated to be 6.6 fish/100m{sup 2}. This represents one-half the densities reported for the 2002 Wigwam River enumeration program, even though enumeration of bull trout redds was an order of magnitude higher for the Wigwam River. Typically, areas with combined fry and juvenile densities greater than 1.5 fish per 100 m{sup 2} are cited as critical rearing areas. Trends in abundance appeared to be related to proximity to spawning areas, bed material size, and water depth. Cover components utilized by juvenile and adult bull trout and cutthroat trout were interstices, boulder, depth, overhead vegetation and LWD. The range of morphological stream types encompass the stable and resilient spectrum (C3(1), C3 and B3c). The Skookumchuck can be generalized as a slightly entrenched, meandering, riffle-pool, cobble dominated

  5. Mixture toxicity of wood preservative products in the fish embryo toxicity test.

    Science.gov (United States)

    Coors, Anja; Dobrick, Jan; Möder, Monika; Kehrer, Anja

    2012-06-01

    Wood preservative products are used globally to protect wood from fungal decay and insects. We investigated the aquatic toxicity of five commercial wood preservative products, the biocidal active substances and some formulation additives contained therein, as well as six generic binary mixtures of the active substances in the fish embryo toxicity test (FET). Median lethal concentrations (LC50) of the single substances, the mixtures, and the products were estimated from concentration-response curves and corrected for concentrations measured in the test medium. The comparison of the experimentally observed mixture toxicity with the toxicity predicted by the concept of concentration addition (CA) showed less than twofold deviation for all binary mixtures of the active substances and for three of the biocidal products. A more than 60-fold underestimation of the toxicity of the fourth product by the CA prediction was detected and could be explained fully by the toxicity of one formulation additive, which had been labeled as a hazardous substance. The reason for the 4.6-fold underestimation of toxicity of the fifth product could not be explained unambiguously. Overall, the FET was found to be a suitable screening tool to verify whether the toxicity of formulated wood preservatives can reliably be predicted by CA. Applied as a quick and simple nonanimal screening test, the FET may support approaches of applying component-based mixture toxicity predictions within the environmental risk assessment of biocidal products, which is required according to European regulations. Copyright © 2012 SETAC.

  6. Surrogate production of eggs and sperm by intrapapillary transplantation of germ cells in cytoablated adult fish.

    Directory of Open Access Journals (Sweden)

    Sullip Kumar Majhi

    Full Text Available Germ cell transplantation (GCT is a promising assisted reproductive technology for the conservation and propagation of endangered and valuable genetic resources. In teleost fish, GCT in adult gonads has been achieved only in male recipients, limiting greatly the usefulness of this technique in situations where both sexes need equal and timely attention for conservation and/or propagation. Here we describe a simplified GCT approach that ultimately leads to production of donor-derived eggs and sperm in considerably short time. Donor germ cells isolated from young pejerrey Odontesthes bonariensis (Atherinopsidae were transplanted non-surgically through the genital papilla into the sexually mature gonads of Patagonian pejerrey O. hatcheri recipients whose gonads have been depleted of endogenous GCs by heat (26°C and chemical treatment (four doses of Busulfan at 30 mg/kg and 40 mg/kg for females and males, respectively. Transplanted spermatogonial and oogonial cells were able to recolonize the recipients' gonads and produce functional donor origin eggs and sperm within 7 months from the GCT. We confirmed the presence of donor-derived gametes by PCR in 17% and 5% of the surrogate O. hatcheri fathers and mothers, respectively. The crosses between surrogate fathers and O. bonariensis mothers yielded 12.6-39.7% pure O. bonariensis and that between a surrogate mother and an O. bonariensis father yielded 52.2% pure O. bonariensis offspring. Our findings confirm that transplantation of germ cells into sexually competent adult fish by non-surgical methods allows the production of functional donor-derived eggs and sperm in a considerably short time. The methods described here could play a vital role in conservation and rapid propagation of endangered fish genetic resources.

  7. Surrogate production of eggs and sperm by intrapapillary transplantation of germ cells in cytoablated adult fish.

    Science.gov (United States)

    Majhi, Sullip Kumar; Hattori, Ricardo Shohei; Rahman, Sheikh Mustafizur; Strüssmann, Carlos Augusto

    2014-01-01

    Germ cell transplantation (GCT) is a promising assisted reproductive technology for the conservation and propagation of endangered and valuable genetic resources. In teleost fish, GCT in adult gonads has been achieved only in male recipients, limiting greatly the usefulness of this technique in situations where both sexes need equal and timely attention for conservation and/or propagation. Here we describe a simplified GCT approach that ultimately leads to production of donor-derived eggs and sperm in considerably short time. Donor germ cells isolated from young pejerrey Odontesthes bonariensis (Atherinopsidae) were transplanted non-surgically through the genital papilla into the sexually mature gonads of Patagonian pejerrey O. hatcheri recipients whose gonads have been depleted of endogenous GCs by heat (26°C) and chemical treatment (four doses of Busulfan at 30 mg/kg and 40 mg/kg for females and males, respectively). Transplanted spermatogonial and oogonial cells were able to recolonize the recipients' gonads and produce functional donor origin eggs and sperm within 7 months from the GCT. We confirmed the presence of donor-derived gametes by PCR in 17% and 5% of the surrogate O. hatcheri fathers and mothers, respectively. The crosses between surrogate fathers and O. bonariensis mothers yielded 12.6-39.7% pure O. bonariensis and that between a surrogate mother and an O. bonariensis father yielded 52.2% pure O. bonariensis offspring. Our findings confirm that transplantation of germ cells into sexually competent adult fish by non-surgical methods allows the production of functional donor-derived eggs and sperm in a considerably short time. The methods described here could play a vital role in conservation and rapid propagation of endangered fish genetic resources.

  8. The application of autochthonous potential of probiotic lactobacillus plantarum 564 in fish oil fortified yoghurt production

    Directory of Open Access Journals (Sweden)

    Radulović Zorica

    2014-01-01

    Full Text Available The objective of this work was to investigate the survival of autochthonous, potentially probiotic bacteria Lactobacillus plantarum 564, and the influence of long-chain polyunsaturated fatty acid omega-3 (omega-3 PUFA fish oil fortification on the sensory quality of yoghurt. Three variants of yoghurt were produced using starter cultures of Lactobacillus delbrueckii ssp. bulgaricus and Streptococcus thermophilus (Chr. Hansen, Denmark, and the potentially probiotic Lactobacillus plantarum 564 (Culture Collection of the Department for Industrial Microbiology, Faculty of Agriculture, University of Belgrade as follows: (1 without omega-3 PUFA; (2 with 100 mg/l omega-3 PUFA; and (3 with 200mg/l omega-3 PUFA. The survival of potential probiotic Lb. plantarum 564, the changes of starter bacteria counts, changes of pH values, as well as sensory evaluation, were examined during 3 weeks of yoghurt storage. Cells of Lb. plantarum 564 were maintained at >108 cfug−1. Starter bacteria counts were >107 cfug−1 for streptococci and >106 cfug−1 for lactobacilli. The changes of pH were within normal pH of fermented milks. Sensory evaluation showed that all variants of yoghurt produced with Lb. plantarum 564 and 2 concentrations of omega-3 polyunsaturated fatty acids had a high sensory quality (above 90% of maximal quality, and which did not change significantly throughout the examined storage period. Although the sensory quality of the control sample was evaluated as better, the experimental samples fortified with fish oil were also characterized with very acceptable sensory properties. Results of high viability of potential probiotic Lb. plantarum 564, as well as very acceptable yoghurt sensory properties, indicate that this strain can be successfully used in the production of yoghurt fortified with PUFA omega-3 fish oil as a new functional dairy product. [Projekat Ministarstva nauke Republike Srbije, br. III 046010 i br. 046009

  9. The impact of product experience, product involvement and verbal processing style on consumers' cognitive structure with regard to fresh fish

    DEFF Research Database (Denmark)

    Sørensen, Elin; Grunert, Klaus G.; Nielsen, Niels Asger

    1996-01-01

    central cognitive categories like values. A means-end chain consists of concrete product attributes, abstract product attributes, functional consequences, psychosocial consequences, instrumental values, a terminal values. 2) The most common method of measuring means-end chains has been the laddering...... interview technique. Laddering is a semi-qualitative technique which is open for the respondent's own answers without flooding the interviewer with data, as do other qualitative techniques. The results from the laddering interviews are coded and usually presented in a so-called hierarchical value map. 3...... were interviewed. Respondents were asked to rank four meat types, ie, (1) a fresh, whole, gutted plaice, (2) a package of frozen fish fillets, (3) a whole, frozen chicken, and (4) a package of fresh pork chops, according to how likely it would be that they would use them for a hot meal on a work...

  10. Evaluation of water quality conditions near proposed fish production sites associated with the Yakima Fisheries Project. Final report

    International Nuclear Information System (INIS)

    Dauble, D.d.; Mueller, R.P.; Martinson, G.A.

    1994-05-01

    In 1991, the Pacific Northwest Laboratory (PNL) began studying water quality at several sites in the Yakima River Basin for the Bonneville Power Administration. These sites were being proposed as locations for fish culture facilities as part of the Yakima Fisheries Project (YFP). Surface water quality parameters near the proposed fish culture facilities are currently suitable for fish production. Water quality conditions in the mainstream Yakima River and its tributaries are generally excellent in the upper part of the watershed (i.e., near Cle Elum), but they are only fair to poor for the river downstream of Union Gap (river mile 107). Water quality of the Naches River near Oak Flats is also suitable for fish production. Groundwater supplies near the proposed fish production facilities typically have elevated concentrations of metals and dissolved gases. These conditions can be mitigated using best engineering practices such as precipitation and degasification. Additionally, mixing with surface water may improve these conditions. Depending on the location and depth of the well, groundwater temperatures may be warmer than optimum for acclimating and holding juvenile and adult fish. Water quality parameters measured in the Yakima River and tributaries sometimes exceed the range of values described as acceptable for culture of salmonids and for the protection of other aquatic life. However, constituent concentrations are within ranges that exist in many northwest fish hatcheries. Additionally, site-specific tests conducted by PNL (i.e., live box exposures and egg incubation studies) indicate that fish can be successfully reared in surface and well water near the proposed facility sites. Thus, there appear to be no constraints to artificial production for the YFP

  11. 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...

  12. A prospective monitoring of natural and anthropical fish populations in the basin of the Trotus river

    Directory of Open Access Journals (Sweden)

    URECHE Dorel

    2006-09-01

    Full Text Available As a major part of the Siret river hidrography, though less known ichthyologically, the Trotus has a series of tributaries worth mentioning for their natural sources of water pollution (the Slanic River for sodium chloride, the Tazlau River for potassium chloride and the Tazlaul Sarat for petroleum derivatives as well as for the chemical pollution from the plants in Darmanesti and Onesti. All these in mind the impact of the pollution over the fish fauna of the above mentioned area was determined. The basinal analysis of the ichthyocenosis was performed in three locations the selection of which was based on the particulars of the habitat: upper Trotus free of chemical and urban waste, the Tazlau and middle and downstream Trotus – an area affected by chemical and urban waste upstream Comanesti. A total number of sampling stations was chosen so as to cover all particular fish breeding associations and changes in spreading of the species.

  13. Can data from disparate long-term fish monitoring programs be used to increase our understanding of regional and continental trends in large river assemblages?

    Science.gov (United States)

    Waite, Ian R.; Casper, Andrew F.; Ward, David L.; Sauer, Jennifer S.; Irwin, Elise R.; Chapman, Colin G.; Ickes, Brian S.; Paukert, Craig P.; Kosovich, John J.; Bayer, Jennifer M.

    2018-01-01

    Understanding trends in the diverse resources provided by large rivers will help balance tradeoffs among stakeholders and inform strategies to mitigate the effects of landscape scale stressors such as climate change and invasive species. Absent a cohesive coordinated effort to assess trends in important large river resources, a logical starting point is to assess our ability to draw inferences from existing efforts. In this paper, we use a common analytical framework to analyze data from five disparate fish monitoring programs to better understand the nature of spatial and temporal trends in large river fish assemblages. We evaluated data from programs that monitor fishes in the Colorado, Columbia, Illinois, Mississippi, and Tallapoosa rivers using non-metric dimensional scaling ordinations and associated tests to evaluate trends in fish assemblage structure and native fish biodiversity. Our results indicate that fish assemblages exhibited significant spatial and temporal trends in all five of the rivers. We also document native species diversity trends that were variable within and between rivers and generally more evident in rivers with higher species richness and programs of longer duration. We discuss shared and basin-specific landscape level stressors. Having a basic understanding of the nature and extent of trends in fish assemblages is a necessary first step towards understanding factors affecting biodiversity and fisheries in large rivers. PMID:29364953

  14. Can data from disparate long-term fish monitoring programs be used to increase our understanding of regional and continental trends in large river assemblages?

    Science.gov (United States)

    Counihan, Timothy D.; Waite, Ian R.; Casper, Andrew F.; Ward, David L.; Sauer, Jennifer S.; Irwin, Elise R.; Chapman, Colin G.; Ickes, Brian; Paukert, Craig P.; Kosovich, John J.; Bayer, Jennifer M.

    2018-01-01

    Understanding trends in the diverse resources provided by large rivers will help balance tradeoffs among stakeholders and inform strategies to mitigate the effects of landscape scale stressors such as climate change and invasive species. Absent a cohesive coordinated effort to assess trends in important large river resources, a logical starting point is to assess our ability to draw inferences from existing efforts. In this paper, we use a common analytical framework to analyze data from five disparate fish monitoring programs to better understand the nature of spatial and temporal trends in large river fish assemblages. We evaluated data from programs that monitor fishes in the Colorado, Columbia, Illinois, Mississippi, and Tallapoosa rivers using non-metric dimensional scaling ordinations and associated tests to evaluate trends in fish assemblage structure and native fish biodiversity. Our results indicate that fish assemblages exhibited significant spatial and temporal trends in all five of the rivers. We also document native species diversity trends that were variable within and between rivers and generally more evident in rivers with higher species richness and programs of longer duration. We discuss shared and basin-specific landscape level stressors. Having a basic understanding of the nature and extent of trends in fish assemblages is a necessary first step towards understanding factors affecting biodiversity and fisheries in large rivers.

  15. Liquid by-products from fish canning industry as sustainable sources of ω3 lipids.

    Science.gov (United States)

    Monteiro, Ana; Paquincha, Diogo; Martins, Florinda; Queirós, Rui P; Saraiva, Jorge A; Švarc-Gajić, Jaroslava; Nastić, Nataša; Delerue-Matos, Cristina; Carvalho, Ana P

    2018-08-01

    Fish canning industry generates large amounts of liquid wastes, which are discarded, after proper treatment to remove the organic load. However, alternative treatment processes may also be designed in order to target the recovery of valuable compounds; with this procedure, these wastewaters are converted into liquid by-products, becoming an additional source of revenue for the company. This study evaluated green and economically sustainable methodologies for the extraction of ω3 lipids from fish canning liquid by-products. Lipids were extracted by processes combining physical and chemical parameters (conventional and pressurized extraction processes), as well as chemical and biological parameters. Furthermore, LCA was applied to evaluate the environmental performance and costs indicators for each process. Results indicated that extraction with high hydrostatic pressure provides the highest amounts of ω3 polyunsaturated fatty acids (3331,5 mg L -1 effluent), apart from presenting the lowest environmental impact and costs. The studied procedures allow to obtain alternative, sustainable and traceable sources of ω3 lipids for further applications in food, pharmaceutical and cosmetic industries. Additionally, such approach contributes towards the organic depuration of canning liquid effluents, therefore reducing the overall waste treatment costs. Copyright © 2018 Elsevier Ltd. All rights reserved.

  16. Coastal women empowerment in improving enterprise of fish product processing in Sanga-Sanga Districts

    Science.gov (United States)

    Haqiqiansyah, G.; Sugiharto, E.

    2018-04-01

    This research was conducted to identify and scrutinize women empowerment of fish product processing group in the District of Sanga-Sanga on 2017. The method used was survey method, which is direct observation and interview to respondent. Data were collected in the form of primary and secondary data. Collected data then processed, tabulated, and displayed in the table and graph. The measurement of women empowerment degree was measured by Likert Scale on 3 level, that are score 1 = low, score 2 = less, and score 3 = high. The result of research demonstrated that the rate of empowerment women group of fish product processor was high (score 42,75). Partially, awareness level or willingness to change of processing enterprise group which indicate empowerment indicator categorized as high (91,67%). The level of capability to increase the chance of acquiring access was high (66,67%), the level of capability to overcome an obstacle tend to categorized as less (50%) and the level of capability to collaborate was high (66,67%). It means that the level of coastal women empowerment could be reliable to do a reformation.

  17. Optimization of the marinating conditions of cassava fish (Pseudotolithus sp.) fillet for Lanhouin production through application of Doehlert experimental design.

    Science.gov (United States)

    Kindossi, Janvier Mêlégnonfan; Anihouvi, Victor Bienvenu; Vieira-Dalodé, Générose; Akissoé, Noël Houédougbé; Hounhouigan, Djidjoho Joseph

    2016-03-01

    Lanhouin is a traditional fermented salted fish made from the spontaneous and uncontrolled fermentation of whole salted cassava fish (Pseudotolithus senegalensis) mainly produced in the coastal regions of West Africa. The combined effects of NaCl, citric acid concentration, and marination time on the physicochemical and microbiological characteristics of the fish fillet used for Lanhouin production were studied using a Doehlert experimental design with the objective of preserving its quality and safety. The marination time has significant effects on total viable and lactic acid bacteria counts, and NaCl content of the marinated fish fillet while the pH was significantly affected by citric acid concentration and marination duration with high regression coefficient R (2) of 0.83. The experiment showed that the best conditions for marination process of fish fillet were salt ratio 10 g/100 g, acid citric concentration 2.5 g/100 g, and marination time 6 h. These optimum marinating conditions obtained present the best quality of marinated flesh fish leading to the safety of the final fermented product. This pretreatment is necessary in Lanhouin production processes to ensure its safety quality.

  18. Decontamination of fish and seafood products by irradiation; Descontaminacion por irradiacion de pescado y productos del mar

    Energy Technology Data Exchange (ETDEWEB)

    Luna C, P C

    1992-05-15

    An alternative to prolong the useful shelf life of the fish and of the sea products is the use of the ionizing radiation. The radiation process in combination with other conservation methods like the refrigeration or freezing, assures the hygienic quality of the marine products, eliminating bacteria that cause decomposition as well as of others that produce illnesses and that they are transmitted through these, like is the case of Vibrio Cholera, Salmonella, Shigella Yersinia etc. In this document the technical feasibility of the irradiation applied to the fish and the sea products, in fresh, refrigerated and frozen form will be analyzed. (Author)

  19. Diatom production in the marine environment : implications for larval fish growth and condition

    DEFF Research Database (Denmark)

    St. John, Michael; Clemmesen, C.; Lund, T.

    2001-01-01

    To test the effects of diatom production on larval fish growth and condition. laboratory experiments were performed with larval North Sea cod reared on different algal food chains. These food chains were based on cultures of (a) the diatoms Skeletonema costatum and Thalassiosira weissflogii: (b....../omega6 fatty acids in the algal source had no significant effect. The highest and lowest growth rates were observed in food chains based on H. triquetra and T. weissflogii. respectively (means for days 14-16 of 4.0 and - 4.7). The mixed diatom/dinoflagellate diet resulted in inter- mediate growth rates...... and condition. Regressions of growth rates against EPA and DHA content indicated no inhibitory effect of diatom production on growth in larval cod...

  20. Enzymatic production of single-molecule FISH and RNA capture probes.

    Science.gov (United States)

    Gaspar, Imre; Wippich, Frank; Ephrussi, Anne

    2017-10-01

    Arrays of singly labeled short oligonucleotides that hybridize to a specific target revolutionized RNA biology, enabling quantitative, single-molecule microscopy analysis and high-efficiency RNA/RNP capture. Here, we describe a simple and efficient method that allows flexible functionalization of inexpensive DNA oligonucleotides by different fluorescent dyes or biotin using terminal deoxynucleotidyl transferase and custom-made functional group conjugated dideoxy-UTP. We show that (i) all steps of the oligonucleotide labeling-including conjugation, enzymatic synthesis, and product purification-can be performed in a standard biology laboratory, (ii) the process yields >90%, often >95% labeled product with minimal carryover of impurities, and (iii) the oligonucleotides can be labeled with different dyes or biotin, allowing single-molecule FISH, RNA affinity purification, and Northern blot analysis to be performed. © 2017 Gaspar et al.; Published by Cold Spring Harbor Laboratory Press for the RNA Society.

  1. Multisensor for fish quality determination

    DEFF Research Database (Denmark)

    Olafsdottir, G.; Nesvadba, P.; Di Natale, C.

    2004-01-01

    The European fish industry is still reluctant to implement methods other than sensory to monitor freshness and quality of fish products, although general concensus exists about the importance of various quality attributes and the need for methods to monitor quality. The objective of the project...... FAIR CT98-4076 (MUSTEC) was to evaluate several physico-chemical techniques and to integrate their outputs into a more robust estimate of the freshness quality of fish. The techniques used for this multisensor approach were based on visible light spectroscopy, electrical properties, image analysis...... sensory score. The outcome provides a basis for the construction and industrial exploitation of multi-sensor-devices for defining the quality of fish....

  2. Impacts of cooking technique on polychlorinated biphenyl and polychlorinated dioxins/furan concentrations in fish and fish products with intake estimates.

    Science.gov (United States)

    Rawn, Dorothea F K; Breakell, Kenneth; Verigin, Victor; Tittlemier, Sheryl A; Del Gobbo, Liana; Diamond, Miriam; Vanderlinden, Loren; Sit, Daniel

    2013-01-30

    Polychlorinated biphenyl (PCB) and polychlorinated dibenzo-p-dioxin (PCDD) and dibenzofuran (PCDF) concentrations were determined in composites of 18 different fish products and were prepared as raw, baked, boiled, and fried. ∑PCB concentrations were found to range from 0.12 ng·g(-1) whole weight (ww) in raw octopus to 33 ng·g(-1) ww in baked mackerel. Boiled monkfish was found to have the lowest ∑PCDD/F concentrations (0.41 pg·g(-1) ww), while maximum concentrations were observed in fried catfish (59 pg·g(-1) ww). PCB and PCDD/F concentrations in fish were generally reduced during cooking, although differences were small. The average PCB reduction in finfish was 7.9%, while an increase in PCB mass was observed in non-finfish (2.9%). PCDD/F losses, on average, were observed in both the finfish (3.6%) and non-finfish products (25%). Maximum ∑PCB, ∑PCDD/F, and TEQ(PCDD/F+DL-PCB) (toxic equivalency) intakes, based on 150 g serving size, were determined to be 3300 ng (mackerel), 6600 pg (catfish), and 270 pg (catfish), respectively. PCB and PCDD/F changes associated with cooking generally were small (fish products (e.g., catfish).

  3. Hydropower Production and Fish Habitat Suitability: Impact and Effectiveness of Environmental Flow Prescriptions

    Science.gov (United States)

    Castellarin, A.; Galeati, G.; Ceola, S.; Pugliese, A.; Ventura, M.; Montanari, A.

    2017-12-01

    The anthropogenic alteration of the natural flow regime of a river for hydropower production can significantly modify the processes and functions associated with fluvial ecosystems. In order to preserve the fluvial habitat downstream of dams and diversion structures, environmental flows are commonly defined. Such environmental flows are generally computed from empirical methodologies, which are seldom based on site-specific studies, and may not be representative of local ecological and hydraulic conditions. Here we present the results of a quantitative analysis on the effectiveness of two alternative environmental flow scenarios prescribed in Central Italy (time-invariant experimental and empirically-based flow release versus time-variant hydrogeomorphologically-based flow release) and their impact on hydropower production and fish habitat suitability. The latter is examined by means of several models of habitat suitability curve, which is a well-known approach capable of analysing fluvial species preferences as a function of key eco-hydraulic features, such as water depth, flow velocity and river substrate. The results show an evident loss of hydropower production moving from the time-invariant experimental flow release to the hydrogeomorphological one (nearly 20% at the annual scale). Concerning the effects in terms of fish habitat suitability, our outcomes are less obvious, since they are species- and life stage-specific. The proposed analysis, which can be easily adapted to different riparian habitats and hydrological contexts, is a useful tool to guide the derivation of optimal water resource management strategies in order to ensure both hydropower production and fluvial ecosystem protection.

  4. Development of a real-time PCR method coupled with a selective pre-enrichment step for quantification of Morganella morganii and Morganella psychrotolerans in fish products

    DEFF Research Database (Denmark)

    Podeur, Gaetan; Dalgaard, Paw; Leroi, Francoise

    2015-01-01

    Histamine fish poisoning is common and due to toxic concentrations of histamine often produced by Gram-negative bacteria in fin-fish products with a high content of the free amino acid histidine. The genus Morganella includes two species previously reported to cause incidents of histamine fish po...

  5. Factors Affecting Fish Production and Fishing Quality in New Reservoirs, with Guidance on Timber Clearing, Basin Preparation, and Filling.

    Science.gov (United States)

    1981-08-01

    filling and site preparation exist. Knowledge of what the controlling factors are, how they function, and whether they can be manipulated is essential...protection from water- skiers and speedboaters (Jenkins 1970c). Fish food organisms 55. Submerged structures in the littoral zone of reservoirs often are...tolerance 78. Knowledge of the tolerance of terrestrial vegetation to inun- dation is essential to management of "green-tree reservoirs"--i.e., reservoirs

  6. The Mekong Fish Network: expanding the capacity of the people and institutions of the Mekong River Basin to share information and conduct standardized fisheries monitoring

    Science.gov (United States)

    Patricio, Harmony C.; Ainsley, Shaara M.; Andersen, Matthew E.; Beeman, John W.; Hewitt, David A.

    2012-01-01

    The Mekong River is one of the most biologically diverse rivers in the world, and it supports the most productive freshwater fisheries in the world. Millions of people in the Lower Mekong River Basin (LMB) countries of the Union of Myanmar (Burma), Lao People’s Democratic Republic, the Kingdom of Thailand, the Kingdom of Cambodia, and the Socialist Republic of Vietnam rely on the fisheries of the basin to provide a source of protein. The Mekong Fish Network Workshop was convened in Phnom Penh, Cambodia, in February 2012 to discuss the potential for coordinating fisheries monitoring among nations and the utility of establishing standard methods for short- and long-term monitoring and data sharing throughout the LMB. The concept for this network developed out of a frequently cited need for fisheries researchers in the LMB to share their knowledge with other scientists and decisionmakers. A fish monitoring network could be a valuable forum for researchers to exchange ideas, store data, or access general information regarding fisheries studies in the LMB region. At the workshop, representatives from governments, nongovernmental organizations, and universities, as well as participating foreign technical experts, cited a great need for more international cooperation and technical support among them. Given the limited staff and resources of many institutions in the LMB, the success of the proposed network would depend on whether it could offer tools that would provide benefits to network participants. A potential tool discussed at the workshop was a user-friendly, Web-accessible portal and database that could help streamline data entry and storage at the institutional level, as well as facilitate communication and data sharing among institutions. The workshop provided a consensus to establish pilot standardized data collection and database efforts that will be further reviewed by the workshop participants. Overall, workshop participants agreed that this is the type of

  7. Guam Long-term Coral Reef Monitoring Program Reef Fish Surveys since 2010

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Government of Guam's Long-term Coral Reef Monitoring Program, coordinated by the Guam Coastal Management Program until October 2013 and now coordinated by the...

  8. Guam Long-term Coral Reef Monitoring Program Reef Fish Surveys FY2014

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Government of Guam's Long-term Coral Reef Monitoring Program, coordinated by the University of Guam Marine Lab, involves the collection of data for a suite of...

  9. Production of F1 interspecies hybrid offspring with cryopreserved sperm from a live-bearing fish, the swordtail Xiphophorus helleri.

    Science.gov (United States)

    Yang, Huiping; Hazlewood, Leona; Heater, Sheila J; Guerrero, Paula A; Walter, Ronald B; Tiersch, Terrence R

    2007-03-01

    Despite study of sperm cryopreservation in more than 200 fish species, production of broods from cryopreserved sperm in live-bearing fish has not been demonstrated. This has not been due to a lack of effort, but instead is a result of the unique morphology, biology, and biochemistry of reproduction in viviparous fishes. For example, sperm of Xiphophorus helleri have a cylindrical nucleus, can swim for days after being activated, have glycolytic capabilities, and can reside in the female reproduction tract for months before fertilization. These traits are not found in fishes with external fertilization. The long-standing research use of the genus Xiphophorus has led to development of over 60 pedigreed lines among the 26 species maintained around the world. These species and lines serve as contemporary models in medical research, although they must be maintained as live populations. Previous attempts at establishing sperm cryopreservation protocols for Xiphophorus have not produced live young. To address this we have been studying the parameters surrounding cryobiology of Xiphophorus sperm and applying this information to an improved understanding of internal fertilization and reproduction. Here we report the first successful fertilization and offspring production by cryopreserved sperm in any live-bearing fish. This claim is supported by our use of artificial insemination between two species that yield distinct hybrid offspring to verify paternity via cryopreserved sperm. We provide a practical approach for preservation of valuable genetic resources from live-bearing fish species, a group that is rapidly being lost due to destruction of native habitats.

  10. Validation of high-performance liquid chromatography (HPLC method for quantitative analysis of histamine in fish and fishery products

    Directory of Open Access Journals (Sweden)

    B.K.K.K. Jinadasa

    2016-12-01

    Full Text Available A high-performance liquid chromatography method is described for quantitative determination and validation of histamine in fish and fishery product samples. Histamine is extracted from fish/fishery products by homogenizing with tri-chloro acetic acid, separated with Amberlite CG-50 resin and C18-ODS Hypersil reversed phase column at ambient temperature (25°C. Linear standard curves with high correlation coefficients were obtained. An isocratic elution program was used; the total elution time was 10 min. The method was validated by assessing the following aspects; specificity, repeatability, reproducibility, linearity, recovery, limits of detection, limit of quantification and uncertainty. The validated parameters are in good agreement with method and it is a useful tool for determining histamine in fish and fishery products.

  11. Monitoring the Productivity of Coastal Systems Using PH ...

    Science.gov (United States)

    The impact of nutrient inputs to the eutrophication of coastal ecosystems has been one of the great themes of coastal ecology. There have been countless studies devoted to quantifying how human sources of nutrients, in particular nitrogen (N), effect coastal water bodies. These studies, which often measure in situ concentrations of nutrients, chlorophyll, and dissolved oxygen, are often spatially and/or temporally intensive and expensive. We provide evidence from experimental mesocosms, coupled with data from the water column of a well-mixed estuary, that pH can be a quick, inexpensive, and integrative measure of net ecosystem metabolism. In some cases, this approach is a more sensitive tracer of production than direct measurements of chlorophyll and carbon-14. Taken together, our data suggest that pH is a sensitive, but often overlooked, tool for monitoring estuarine production. This presentation will explore the potential utility of pH as an indicator of ecosystem productivity. Our data suggest that pH is a sensitive and potentially integrator of net ecosystem production. It should not be overlooked, that measuring pH is quick, easy, and inexpensive, further increasing its value as an analytical tool.

  12. Impact of Alternative Environmental Flow Prescriptions on Hydropower Production and Fish Habitat Suitability

    Science.gov (United States)

    Castellarin, A.; Ceola, S.; Pugliese, A.; Galeati, G. A.

    2015-12-01

    Anthropogenic activities along streams and rivers are increasingly recognized to be a major concern for fluvial ecosystems. The management of water resources, by means of e.g. flow diversions and dams, for industrial, agricultural, water-supply, hydropower production and flood protection purposes induces significant changes to the natural streamflow regime of a river. Indeed, the river flow regime is known to be a major abiotic factor influencing fluvial ecosystems. An established approach aimed at preserving the behaviour and distribution of fluvial species relies on the definition of minimum streamflow requirements (i.e., environmental flows) downstream of dams and diversion structures. Such environmental flows are normally identified through methodologies that have an empirical nature and may not be representative of local ecological and hydraulic conditions. While the effect of imposing a minimum discharge release is easily predictable in terms of e.g. loss of hydropower production, the advantages in terms of species preferences are often poorly understood and seldom assessed. To analyze the interactions between flow releases and the behaviour and distribution of fluvial species (i.e., from periphyton, to benthic invertebrate and fish), one may use a habitat suitability curve, which is a fundamental tool capable of describing species preferences influenced by any generic environmental variable. The outcomes of a real case study applied to several Italian rivers, located in the Marche administrative district in Central Italy (∽10000km2), in which we quantitatively assess the effects of alternative environmental flow scenarios on the existing hydropower network and on two fish species that are quite abundant in the study area (i.e., Leuciscus cephalus cabeda and Barbus barbus plebejus), will be presented and discussed. The proposed analysis, which can be easily adapted to different riparian habitats and hydrological contexts, is a useful tool to guide the

  13. Determining potential adverse effects in marine fish exposed to pharmaceuticals and personal care products with the fish plasma model and whole-body tissue concentrations.

    Science.gov (United States)

    Meador, James P; Yeh, Andrew; Gallagher, Evan P

    2017-11-01

    The Fish Plasma Model (FPM) was applied to water exposure and tissue concentrations in fish collected from two wastewater treatment plant impacted estuarine sites. In this study we compared predicted fish plasma concentrations to Cmax values for humans, which represents the maximum plasma concentration for the minimum therapeutic dose. The results of this study show that predictions of plasma concentrations for a variety of pharmaceutical and personal care products (PPCPs) from effluent concentrations resulted in 37 compounds (54%) exceeding the response ratio (RR = Fish [Plasma]/1%Cmax total ) of 1 compared to 3 compounds (14%) detected with values generated with estuarine receiving water concentrations. When plasma concentrations were modeled from observed whole-body tissue residues, 16 compounds out of 24 detected for Chinook (67%) and 7 of 14 (50%) for sculpin resulted in an RR tissue value greater than 1, which highlights the importance of this dose metric over that using estuarine water. Because the tissue residue approach resulted in a high percentage of compounds with calculated response ratios exceeding a value of unity, we believe this is a more accurate representation for exposure in the field. Predicting plasma concentrations from tissue residues improves our ability to assess the potential for adverse effects in fish because exposure from all sources is captured. Tissue residues are also more likely to represent steady-state conditions compared to those from water exposure because of the inherent reduction in variability usually observed for field data and the time course for bioaccumulation. We also examined the RR in a toxic unit approach to highlight the importance of considering multiple compounds exhibiting a similar mechanism of action. Published by Elsevier Ltd.

  14. Production and quality assessment of fish burger from the grass carp, Ctenopharyngodon idella (Cuvier and Valenciennes, 1844

    Directory of Open Access Journals (Sweden)

    Monjurul Haq

    2013-12-01

    Full Text Available Fish burger was produced from grass carp (Ctenophygodon idella to assess the feasibility of value addition to this low priced fish in Bangladesh. Different food additives (25% mashed potato, 2% NaCl, 2% soybean oil, 2% spices and 0.6% sugar were used to enhance the consumer’s acceptance of the fishery product. Consumers' acceptance of the fish burger was determined by sensory evaluation based on its color, flavor, softness or firmness (S/F, chewy/ rubbery (C/R using 10 point scoring system by a group of 10 untrained judges (20-50 years old. The results were found as follows: color (7.25±1.15, flavor (6.67±1.17, S/F (8.47±1.20 and C/R (7.83±1.23. Evaluation of proximate composition showed that the moisture and protein contents in grass carp mince were 79.15 ± 1.16 % and 18.01±0.44 % respectively which were higher than that of fish burger, 69.46 ± 0.89 % and 16.42 ± 0.57 %, respectively. Lipid (6.64±0.15 % and ash (2.98±0.09 % contents in fish burger were also higher than fish mince. The pH of fish mince and fish burger was 6.8±0.11 and 6.6±0.05 respectively. Therefore, from simple cost-profit analysis, it can be assumed that business of fish burger in Bangladesh has a very good prospect and it would be profitable.

  15. CRYOPRESERVATION OF REPRODUCTIVE PRODUCTS AS AN EFFECTIVE METHOD FOR PRESERVING THE BIODIVERSITY OF STURGEON FISH SPECIES (REVIEW

    Directory of Open Access Journals (Sweden)

    I. Kononenko

    2016-06-01

    Full Text Available Purpose. In recent years, cryopreservation of reproductive products has widely been used as one of the accessible and in some cases the only ways of preserving and supporting the number of endangered fish species including sturgeon fish species. Currently, the method of cryopreservation is represented by various techniques and ways using individual and species approaches. Numerous publications on the issue of fish sperm cryopreservation mostly contain inconsistent results and ambiguous data. Thus, the analysis of the existing information about principles and methods of fish sperm cryopreservation is an important issue for further studies. Moreover, summarizing the existing information will enable us to plan the experiment more efficiently and reasonably and to get the desired outcomes with higher reliability. Findings. The study presents main principles of widely used methods of fish sperm cryopreservation, the analysis of main factors of influence on outcomes of freezing or unfreezing as well as the analysis of results received when using various ways and methods of cryopreservation. Besides, the paper shows the importance of forming and full functioning of fish sperm cryobanks. Originality. The paper summarizes the existing information on the issue of fish sperm low temperature cryopreservation. The information is given in the form of successive presentation of the research outcomes received at each point of freezing or unfreezing when using different techniques as well as results of different factors influence on it. Moreover, a review of achievements in the field of cryopreservation and main principles of forming fish sperm cryobanks are given. Practical value. The presented review of traditional and modern literature data in the issue of cryopreservation can be used when planning, redesigning and experimenting fish sperm freezing or unfreezing.

  16. Insecticide residue monitoring in sediments water fish and mangroves at the Cimanuk Delta

    International Nuclear Information System (INIS)

    Sumatra, Made

    1982-01-01

    The water and sediments from the upper stream of Cimanuk river carry insecticide residues especially during the rainy season. The insecticides are deposited in the estuary of Cimanuk river and along the coast of Cimanuk delta. The insecticide residues found at the delta were diazinon thiodan DDE o p-DDT and p p-DDT. Those insecticides are found in most of the water sediments and mangrove leaves samples and some of fishes samples. The samples were taken from the river the estuary the sea, the tambaks, the coast line, and from paddy field. No insecticide residue is found in the water samples taken in the dry season but they are found in the sediment samples taken in both the dry and rainy season. Generally the diazinon residues are higher at the surface than at 0.5m depth in compact sediment but they are higher at 0.5m depth than at the surface of the mud from the coast line. Diazinon and thiodan are found only in three fish samples out of twenty samples analyzed but thiodan is found in almost all of the sediment and mangrove leaves samples. DDT is found in almost all of the samples analyzed. (author)

  17. Glycerin purification using asymmetric nano-structured ceramic membranes from production of waste fish oil biodiesel

    Science.gov (United States)

    Maghami, M.; Sadrameli, S. M.; Shamloo, M.

    2018-02-01

    Biodiesel is an environmental friendly alternative liquid transportation fuel that can be used in diesel engines without major modifications. The scope of this research work is to produce biodiesel from waste fish oil and its purification from the byproducts using a ceramic membrane. Transesterification of waste fish oil was applied for the biodiesel production using methanol in the presence of KOH as a catalyst. Effect of catalyst weight percent, temperature and methanol to oil molar ratio (MR) on the biodiesel yield have been studied and the results show that highest methyl ester yield of 79.2% has been obtained at 60 °C, MR: 6 and 1% KOH. The produced biodiesel purified by a ceramic membrane. Membrane flux and glycerin removal at different operating conditions such as temperature, trans-membrane pressures and cross flow velocities have been measured. Glycerin purity by membrane method is 99.97% by weight at the optimum condition. The highest membrane flux occurred at 50 °C temperature, 1 bar pressure and 3 m/s velocity.

  18. Development of technology for washed minced fish production from low-profit objects of fishing in the Volga-Caspian Basin

    Directory of Open Access Journals (Sweden)

    Mukatova M. D.

    2016-09-01

    Full Text Available The objects of the study are as follows: rudd and goldfish, samples of food minced made of them without washing, after single and double washings. To study the organoleptic and physico-chemical parameters the conventional methods of the fishing industry have been used. At the LLC "Astrakhan fisheries" two experimental batches of minced rudd and goldfish with double washing by water using a food additive "Omfresh plus" have been made in the amount of 1.0 % by weight of the meat. The yield of washed minced food from rudd is 41.4 %, from silver carp – 41.0 %. Some decrease in water content, water-holding capacity and formalin-titratable nitrogen in minced fish after each washing step has been established. Studying the organoleptic characteristics has shown that the frozen minced briquettes are cuboids, have clean surface with the presence of minor irregularities, colour – light gray, dense texture. On physical and chemical parameters the food washed mince correspond to GOST R 55505–2013 "Frozen food fish forcemeat. Specifications". Water content is 79–82 %, sodium chloride – 0,17–0,35 %, and water-holding capacity – at over 50 %. The proven technology of manufacturing washed minced from goldfish and rudd can be put into production for the purpose of deep processing of unprofitable species of the Volga-Caspian Basin and getting washed minced food and culinary products based on it.

  19. Monitoring of populations and productivity of seabirds at St. George Island, Cape Peirce, and Bluff, Alaska, 1989. Final report

    International Nuclear Information System (INIS)

    Mendenhall, V.M.

    1991-04-01

    In recent years, although descriptive studies have continued, the emphasis on population monitoring of seabirds has increased. Commercial uses of the Continental Shelf of the Bering and Chukchi Seas, including oil and gas development, subsurface placer mining, and commercial fishing, carry the potential for adverse pressures on seabird populations. Populations and productivity of seabirds were monitored in 1989 at three Bering Sea colonies: St. George, Cape Peirce, and Bluff. Murres and black-legged kittiwakes were monitored at all colonies to facilitate intercolony comparisons. These species were selected because they are relatively easy to study, numerous, sensitive to potential impacts of development, and widely distributed. Red legged kittiwakes also were monitored at St. George because of concern for the world status of the species. Methods were standardized among the three colonies to facilitate comparisons among colonies and years. Observations of productivity began at the time nests were established and continued until most young had fledged. Kittiwake nests and murre breeding sites used for estimation of productivity were mapped on photographs or sketches and the fate of each was recorded

  20. Harmonized Landsat/Sentinel-2 Reflectance Products for Land Monitoring

    Science.gov (United States)

    Masek, J. G.; Ju, J.; Claverie, M.; Vermote, E.; Dungan, J. L.; Roger, J. C.; Skakun, S.; Justice, C. O.

    2017-12-01

    Many land applications require more frequent observations than can be obtained from a single "Landsat class" sensor. Agricultural monitoring, inland water quality assessment, stand-scale phenology, and numerous other applications all require near-daily imagery at better than 1ha resolution. Thus the land science community has begun expressing a desire for a "30-meter MODIS" global monitoring capability. One cost-effective way to achieve this goal is via merging data from multiple, international observatories into a single virtual constellation. The Harmonized Landsat/Sentinel-2 (HLS) project has been working to generate a seamless surface reflectance product by combining observations from USGS/NASA Landsat-8 and ESA Sentinel-2. Harmonization in this context requires a series of radiometric and geometric transforms to create a single surface reflectance time series agnostic to sensor origin. Radiometric corrections include a common atmospheric correction using the Landsat-8 LaSRC/6S approach, a simple BRDF adjustment to constant solar and nadir view angle, and spectral bandpass adjustments to fit the Landsat-8 OLI reference. Data are then resampled to a consistent 30m UTM grid, using the Sentinel-2 global tile system. Cloud and shadow masking are also implemented. Quality assurance (QA) involves comparison of the output 30m HLS products with near-simultaneous MODIS nadir-adjusted observations. Prototoype HLS products have been processed for 7% of the global land area using the NASA Earth Exchange (NEX) compute environment at NASA Ames, and can be downloaded from the HLS web site (https://hls.gsfc.nasa.gov). A wall-to-wall North America data set is being prepared for 2018.This talk will review the objectives and status of the HLS project, and illustrate applications of high-density optical time series data for agriculture and ecology. We also discuss lessons learned from HLS in the general context of implementing virtual constellations.

  1. Omics approaches in fish quality and safety

    Directory of Open Access Journals (Sweden)

    Maria Lúcia Guerra Monteiro

    2017-05-01

    Full Text Available Omics is a new technology that uses genomics, proteomics, and metabolomics to investigate metabolites from foods. The global demand for fish has shown a progressive increase because it is a significant source of high quality protein, polyunsaturated fatty acids, especially omega-3, and essential minerals. However, there are barriers in the fishery production chain such as lack of standardization, knowledge, and technology transfer to industry. Moreover, fish effective monitoring is difficult due to restricted quality parameters and analytical methods determined by current Brazilian legislation. This review details the limiting chemical parameters and recent advances in analytical procedures for fish quality determination. To improve fish quality monitoring, total volatile basic nitrogen (TVB-N, trimethylamine (TMA, ammonia, pH, and biogenic amines values should be revised and established by fish category and/or type of fish product. On the other hand, protein carbonyl concentration, free fatty acids (FFAs, peroxide values (POV, and thiobarbituric acid reactive substances (TBARS should be included in the national legislation. Simultaneously, the official authorities should take into account effective, practical, and low cost analytical methodologies, which lead to faster results in order to facilitate and enhance the quality control of the products from the fish production chain, ensuring the consumer’s health. Moreover, analytical techniques for the identification of fish species must be introduced in the Brazilian legislation in order to avoid illegal substitutions and negative impacts to consumers.

  2. Fortification of Sardine Fish Oil from By-product of Canning Processing into Beef Meatball and Chicken Nugget

    OpenAIRE

    Teti Estiasih; Endang Trowulan; Widya Dwi Rukmi

    2017-01-01

    One source of ω-3 fatty acids is a by-product of lemuru canning processing that can be used for fortification.  Generally, fortification uses fish oil microcapsule but it is more expensive than direct fortification.  In this study, fish oil from a by-product of lemuru canning processing was directly fortified into beef meatball and chicken nugget at concentration of 0, 2, 4, and 6% (w/w).  Oxidation level, free fatty acid content, colour, lightness, texture, and sensory acceptance by triangle...

  3. Recreational sea fishing in Europe in a global context-Participation rates, fishing effort, expenditure, and implications for monitoring and assessment

    NARCIS (Netherlands)

    Hyder, Kieran; Weltersbach, Marc Simon; Armstrong, Mike; Ferter, Keno; Townhill, Bryony; Ahvonen, Anssi; Arlinghaus, Robert; Baikov, Andrei; Bellanger, Manuel; Birzaks, Janis; Borch, Trude; Cambie, Giulia; Graaf, De Martin; Diogo, Hugo M.C.; Dziemian, Łukasz; Gordoa, Ana; Grzebielec, Ryszard; Hartill, Bruce; Kagervall, Anders; Kapiris, Kostas; Karlsson, Martin; Kleiven, Alf Ring; Lejk, Adam M.; Levrel, Harold; Lovell, Sabrina; Lyle, Jeremy; Moilanen, Pentti; Monkman, Graham; Morales-Nin, Beatriz; Mugerza, Estanis; Martinez, Roi; O'Reilly, Paul; Olesen, Hans Jakob; Papadopoulos, Anastasios; Pita, Pablo; Radford, Zachary; Radtke, Krzysztof; Roche, William; Rocklin, Delphine; Ruiz, Jon; Scougal, Callum; Silvestri, Roberto; Skov, Christian; Steinback, Scott; Sundelöf, Andreas; Svagzdys, Arvydas; Turnbull, David; Hammen, Van Der Tessa; Voorhees, Van David; Winsen, Van Frankwin; Verleye, Thomas; Veiga, Pedro; Vølstad, Jon-Helge; Zarauz, Lucia; Zolubas, Tomas; Strehlow, Harry V.

    2018-01-01

    Marine recreational fishing (MRF) is a high-participation activity with large economic value and social benefits globally, and it impacts on some fish stocks. Although reporting MRF catches is a European Union legislative requirement, estimates are only available for some countries. Here, data on

  4. Recreational sea fishing in Europe in a global context—Participation rates, fishing effort, expenditure, and implications for monitoring and assessment

    DEFF Research Database (Denmark)

    Hyder, Kieran; Weltersbach, Marc Simon; Armstrong, Mike

    2018-01-01

    Marine recreational fishing (MRF) is a high‐participation activity with large economic value and social benefits globally, and it impacts on some fish stocks. Although reporting MRF catches is a European Union legislative requirement, estimates are only available for some countries. Here, data on...

  5. Rapid quantification of iron content in fish sauce and soy sauce: a promising tool for monitoring fortification programs.

    Science.gov (United States)

    Laillou, Arnaud; Icard-Vernière, Christèle; Rochette, Isabelle; Picq, Christian; Berger, Jacques; Sambath, Pol; Mouquet-Rivier, Claire

    2013-06-01

    In a number of Southeast Asian countries and China, fish sauce and soy sauce produced at the industrial level are fortified with iron. Unfortunately, the food producers and regulatory agencies implementing fortification programs do not always have the capacity to monitor the programs on an ongoing basis. To assess a new portable device for the quantitative measurement of iron content of fortified sauces that could be used to control fortification levels. The linearity, detection limits, and inter- and intraassay variability of this device were assessed on fish sauce and soy sauce fortified with ferrous sulfate, ferrous fumarate, and sodium iron ethylenediaminetetraacetate (NaFeEDTA); the accuracy of the results was determined by comparing them with the results obtained by atomic absorption spectrophotometry. Measurements required a minimum incubation time of 1 hour for iron sulfate or iron fumarate and 24 hours for NaFeEDTA. Linearity of the results ranged from 2 to 10 mg iron/L for ferrous sulfate or ferrous fumarate and from 1 to 10 mg iron/L for NaFeEDTA, implying the need for proper dilution, as the iron contents of fortified sauce are usually in the range of 150 to 1,000 mg/L. Depending on incubation time, iron compounds, and sauces, the coefficient of variation (CV) of intraassay precision was between 1.5% and 7.6% and the CV of interassay precision was between 2.9% and 7.4%. Comparison with results from atomic absorption spectrophotometry showed high agreement between both methods, with R = 0.926 and R = 0.935 for incubation times of 1 hour and 24 hours, respectively. The Bland-Altman plots showed limits of agreement between the two methods of +/- 70 mg/L in the range of fortification levels tested (100 to 500 mg/L). CONCLUSIONS; This device offers a viable method for field monitoring of iron fortification of soy and fish sauces after incubation times of 1 hour for ferrous sulfate or ferrous fumarate and 24 hours for NaFeEDTA.

  6. [Safety monitoring of cell-based medicinal products (CBMPs)].

    Science.gov (United States)

    Funk, Markus B; Frech, Marion; Spranger, Robert; Keller-Stanislawski, Brigitte

    2015-11-01

    Cell-based medicinal products (CBMPs), a category of advanced-therapy medicinal products (ATMPs), are authorised for the European market by the European Commission by means of the centralized marketing authorisation. By conforming to the German Medicinal Products Act (Sec. 4b AMG), national authorisation can be granted by the Paul-Ehrlich-Institut in Germany exclusively for ATMPs not based on a routine manufacturing procedure. In both procedures, quality, efficacy, and safety are evaluated and the risk-benefit balance is assessed. For the centralised procedure, mainly controlled clinical trial data must be submitted, whereas the requirements for national procedures could be modified corresponding to the stage of development of the ATMP. After marketing authorization, the marketing authorization/license holder is obligated to report all serious adverse reactions to the competent authority and to provide periodic safety update reports. If necessary, post-authorization safety studies could be imposed. On the basis of these regulatory measures, the safety of advanced therapies can be monitored and improved.

  7. Monitoring of the artificial reef fish assemblages of golfe juan marine protected area (France, North-Western Mediterranean

    Directory of Open Access Journals (Sweden)

    Bodilis Pascaline

    2011-01-01

    Full Text Available Artificial reefs were deployed within the Golfe-Juan marine protected area (Alpes-Maritimes coast, France, Northwestern Mediterranean created in 1981. This no-take area is fully protected since its establishment, except in 2004 when some anthropic activities were, exceptionally, authorized. Moreover, no park rangers to prevent poaching since 2002 occur. In order to carry out a long term monitoring of the artificial reef fish assemblages, underwater visual censuses (UVC were carried out in 1988, 1998 and 2008, according to a traditional standardized visual census method that taken into account all fish species. The complexification of some large reefs built with wide voide spaces called Bonna reefs appear to be a good solution to increase species richness and density. Species richness and density of the fish assemblages showed significant increase between 1988 and 1998. However the fast increasing was stopped from 1998 and 2008 probably due to a lack of law enforcement and poaching. Despite artificial reefs were deployed in MPA since at least 20 years, they did not show a real positive impact on fish assemblages. These results could be explained (i by a lack of law enforcement patrol within the protected areas during the last decade, and (ii by the one-year opening to fishing activities within MPA. The real effectiveness of the artificial reefs in sustaining fish assemblages is discussed and the necessity of a regular and efficient control by park rangers is highlighted.Recifes artificiais foram implantados na área protegida Golfe-Juan (costa dos Alpes-Maritimes, Noroeste do Mediterraneo criada em 1981. Esta área NTZ (Area de Restrição da Pesca é inteiramente protegida, desde seu estabelecimento, exceto em 2004, quando algumas atividades antropicas foram excepcionalmente autorizadas. Além disso, desde 2002, não houve nenhuma patrulha florestal para impedir a caça e pesca ilegais. . A fim realizar um monitoramento a longo prazo das assembl

  8. Effect of fish and oil nature on frying process and nutritional product quality

    OpenAIRE

    Ansorena, D. (Diana); Guembe, A. (Ainhoa); Mendizabal, T. (Tatiana); Astiasarán, I. (Iciar)

    2010-01-01

    The modifications on a lean fish (cod-Gadus morhua) and a fatty fish (farmed salmon-Salmo salar) after the application of pan-frying using 2 types of oil with different lipid profile (extra virgin olive oil and sunflower oil) was the aim of this study. Fat content and total energetic value increased significantly after the frying process only in the lean fish, without relevant changes in the fatty fish. Extra virgin olive oil led to a higher fat absorption rate than sunflower oil in both fish...

  9. Chemical monitoring of mud products on drilled cuttings

    International Nuclear Information System (INIS)

    Hughes, T.L.; Jones, T.G.J.; Tomkins, P.G.; Gilmour, A.; Houwen, O.H.; Sanders, M.

    1991-01-01

    An increasing area of concern for offshore drilling practices in the environmental impact of discharged drilled cuttings contaminated with drilling fluids. The standard retort analysis is of limited accuracy and chemical specificity. Anticipating future requirements for a more complete accounting of mud chemicals discharged to the environment, we present here results for chemical monitoring using a modern comprehensive chemical analysis technique. Fourier transform infrared (FT-IR) spectrometry. In this paper description is given of sampling methods found to be practical and the main calibration requirements are discussed. The techniques developed in the course of this work give a good mineralogical breakdown of mud solids (commercial and drilled solids) in addition to the environmentally relevant measurements relating to mud on cuttings. The possibility of using the new technique for the rigsite monitoring of drilling cuttings is demonstrated. Cuttings samples simultaneously from the flow line, shaker screen, desilter and mud cleaner were analyzed. It is found that mud polymers and other organic additives can be measured with sufficient accuracy to measure the removal of mud products by discharged cuttings. The technique is also applicable to quantify the losses of oil-based mud on cuttings. Field testing has shown that the instrumentation used in sufficiently robust and simple to use for rig-site application

  10. Monitoring of fission products through on-line gamma spectrometry

    International Nuclear Information System (INIS)

    Montagnon, F.; Warlop, R.

    1989-01-01

    Under normal operating conditions, the monitoring of the possible deterioration of the pressurized water reactor core fuel rods is achieved through analysis of the radioactive fission products carried by the primary system. For acquiring results of spectrometric analyses in real time, and avoiding risks of errors linked to manual operations, CEA/DMG and EDF/SEPTEN have jointly developed an entirely automatic system. This system allows measuring permanently the primary system activity of two coupled units, with no human operation nor any handling of active coolant specimens. The PIGAL facility has been set up in the nuclear auxiliary building, common to the two units, and it is used on a demonstration basis for units 2 and 3 of the BUGEY site. This device has been patented

  11. Intelligent packaging for monitoring food quality: a case study on fresh fish

    NARCIS (Netherlands)

    Heising, J.K.

    2014-01-01

    Background

    Foods are prone to quality degradation in the whole supply chain, but the possibilities for monitoring the quality of foods inside the package are limited. When sensors of quality indicators are included into the package of a food, the package can become an

  12. A protocol using coho salmon to monitor Tongass National Forest Land and Resource Management Plan standards and guidelines for fish habitat.

    Science.gov (United States)

    M.D. Bryant; Trent McDonald; R. Aho; B.E. Wright; Michelle Bourassa Stahl

    2008-01-01

    We describe a protocol to monitor the effectiveness of the Tongass Land Management Plan (TLMP) management standards for maintaining fish habitat. The protocol uses juvenile coho salmon (Oncorhynchus kisutch) in small tributary streams in forested watersheds. We used a 3-year pilot study to develop detailed methods to estimate juvenile salmonid...

  13. Environmental monitoring for radionuclides, chemicals, fish and wildlife at a US energy research facility: A case story

    International Nuclear Information System (INIS)

    Gray, R.H.

    1989-09-01

    Environmental monitoring has been an ongoing activity on the US Department of Energy's 560 m 2 Hanford Site in southeastern Washington, USA, for 45 years. Objectives are to detect and assess potential impacts of site operations on air, surface and ground water, foodstuffs, fish, wildlife, soils and vegetation. Data from monitoring efforts are used to calculate the overall radiological dose to humans working onsite or residing in nearby communities. In 1988, measured Hanford Site perimeter concentrations of airborne radionuclides were below applicable guidelines. Tritium and nitrate continued to be the most widespread constituents in onsite ground water. Concentrations of radionuclides and nonradiological water quality in the Columbia River were in compliance with applicable standards. Foodstuffs irrigated with river water downstream of the Site showed low levels of radionuclides that were similar to concentrations found in foodstuffs from control areas. Low levels of 90 Sr and 137 Cs in some onsite wildlife samples and concentrations of radionuclides in soils and vegetation from onsite and offsite locations were typical of those attributable to worldwide fallout. The calculated dose potentially received by a maximally exposed individual (i.e., based on hypothetical assumptions for all routes of exposure) in 1988 (0.08 mrem/yr) was similar to that calculated for 1985 through 1987. 31 refs., 3 figs

  14. The Walla Walla Basin Natural Production Monitoring and Evaluation Project : Progress Report, 1999-2002.

    Energy Technology Data Exchange (ETDEWEB)

    Contor, Craig R.; Sexton, Amy D.

    2003-06-02

    The Walla Walla Basin Natural Production Monitoring and Evaluation Project (WWNPME) was funded by Bonneville Power Administration (BPA) as directed by section 4(h) of the Pacific Northwest Electric Power Planning and Conservation Act of 1980 (P. L. 96-501). This project is in accordance with and pursuant to measures 4.2A, 4.3C.1, 7.1A.2, 7.1C.3, 7.1C.4 and 7.1D.2 of the Northwest Power Planning Council's (NPPC) Columbia River Basin Fish and Wildlife Program (NPPC 1994). Work was conducted by the Fisheries Program of the Confederated Tribes of the Umatilla Indian Reservation (CTUIR) under the Walla Walla Basin Natural Production Monitoring and Evaluation Project (WWNPME). Chapter One provides an overview of the entire report and how the objectives of each statement of work from 1999, 2000, 2001, and 2002 contract years are organized and reported. Chapter One also provides background information relevant to the aquatic resources of the Walla Walla River Basin. Objectives are outlined below for the statements of work for the 1999, 2000, 2001 and 2002 contract years. The same objectives were sometimes given different numbers in different years. Because this document is a synthesis of four years of reporting, we gave objectives letter designations and listed the objective number associated with the statement of work for each year. Some objectives were in all four work statements, while other objectives were in only one or two work statements. Each objective is discussed in a chapter. The chapter that reports activities and findings of each objective are listed with the objective below. Because data is often interrelated, aspects of some findings may be reported or discussed in more than one chapter. Specifics related to tasks, approaches, methods, results and discussion are addressed in the individual chapters.

  15. Effect of the rearing tank residue of fish farms on the production of passion fruit tree seedlings

    Directory of Open Access Journals (Sweden)

    F. O. R. Silva

    2017-03-01

    Full Text Available The objective of this study was to evaluate the initial growth of seedlings and biomass production of blue and yellow passion fruit trees (round cultivar produced from residue of the rearing tanks of fish farms. The experiment was conducted in a greenhouse using residue obtained from fish farming tanks. Ravine soil (RS, fish tank residue (FR and Tropstrato (TR were used as substrate. The treatments were: T1 = control consisting of Tropstrato substrate; T2 = 25% FR + 75% RS; T3 = 50% FR + 50% RS; T4 = 25% RS + 75% FR; T5 = 100% FR. A completely randomized block design consisting of 5 treatments, 4 replicates and 11 plants per plot was used. Treatment T5 (100% fish farming residue resulted in the largest average number of leaves, highest dry matter production of the aerial part, and highest dry matter accumulation in the root (P<0.05. The worst results were obtained for the treatment using 25% FR (T2, which resulted in less uniformity of the variables studied. Stem height of the passion fruit tree was greater for the treatments that included FR, with the greatest mean height being observed for T5. In conclusion, the treatment using the residue of fish farming tanks was found to be beneficial to produce yellow passion fruit seedlings (round cultivar, representing a good alternative for the reutilization of this residue.

  16. Climate warming reduces fish production and benthic habitat in Lake Tanganyika, one of the most biodiverse freshwater ecosystems

    Science.gov (United States)

    Cohen, Andrew S.; Gergurich, Elizabeth L.; Kraemer, Benjamin M.; McGlue, Michael M.; McIntyre, Peter B.; Russell, James M.; Simmons, Jack D.; Swarzenski, Peter W.

    2016-01-01

    Warming climates are rapidly transforming lake ecosystems worldwide, but the breadth of changes in tropical lakes is poorly documented. Sustainable management of freshwater fisheries and biodiversity requires accounting for historical and ongoing stressors such as climate change and harvest intensity. This is problematic in tropical Africa, where records of ecosystem change are limited and local populations rely heavily on lakes for nutrition. Here, using a ∼1,500-y paleoecological record, we show that declines in fishery species and endemic molluscs began well before commercial fishing in Lake Tanganyika, Africa’s deepest and oldest lake. Paleoclimate and instrumental records demonstrate sustained warming in this lake during the last ∼150 y, which affects biota by strengthening and shallowing stratification of the water column. Reductions in lake mixing have depressed algal production and shrunk the oxygenated benthic habitat by 38% in our study areas, yielding fish and mollusc declines. Late-20th century fish fossil abundances at two of three sites were lower than at any other time in the last millennium and fell in concert with reduced diatom abundance and warming water. A negative correlation between lake temperature and fish and mollusc fossils over the last ∼500 y indicates that climate warming and intensifying stratification have almost certainly reduced potential fishery production, helping to explain ongoing declines in fish catches. Long-term declines of both benthic and pelagic species underscore the urgency of strategic efforts to sustain Lake Tanganyika’s extraordinary biodiversity and ecosystem services.

  17. Innovation on Street Food Products (Instant Porridge and Cookies Based on Fortified Patin Fish Protein Concentrate with Red Palm Oil and Encaptulated Oil Fish

    Directory of Open Access Journals (Sweden)

    Dewita Dewita

    2015-02-01

    Full Text Available This research aimed to establish innovation on street food (instant porridge and cookiesfrom Patin Fish Protein Concentrate fortified by blending red palm oil and encaptulated patinfish’s oil. The Encaptulation was conducted by blending of red palm oil and patin fish’s oil usingspray dryer. The blending was consisted of three combinations namely 50 : 50 (A1, 40 : 60 (A2and 60 : 40 (A3 for ratio between red palm oil and patin fish’s oil. The best combination’s resultswas fortified into street food (instant porridge and cookies. The blending was tested by measureyield, fat and fatty acid profile. Moreover, organoleptics and proximate tests were carrie out for thebest treatment of blending in instant porridge and cookies. The results show that encaptulatedyield reached 55 % that rise from A1 treatment as the best treatment with fat content of 17.26%.Profile of unsaturated fatty acid especially fatty acid omega 9 from blending fish oil and palm oilwas 59.29%. The number of fatty acid omega 9 was higher than saturated fatty acid which was18.56%. Furthermore, based on organoleptic tests of instant porridge and cookies using under fiveyear children respondents, it was proven that 93% of children was like the products. Proximate analysis of instant porridge revealed that protein content was 11.04 %, water content was 5.03%,fat content was 1.92 % and ash was 0.64 %. However, proximate analysis showed that cookiesowned protein of 9.11%, fat of 17.03% , water content was 3.93% and ash of 1.38%.Keywords : Encaptulated fish, street food, patin fish protein concentrate, palm oil

  18. Plasma phospholipid pentadecanoic acid, EPA, and DHA, and the frequency of dairy and fish product intake in young children.

    Science.gov (United States)

    Lund-Blix, Nicolai A; Rønningen, Kjersti S; Bøås, Håkon; Tapia, German; Andersen, Lene F

    2016-01-01

    There is a lack of studies comparing dietary assessment methods with the biomarkers of fatty acids in children. The objective was to evaluate the suitability of a food frequency questionnaire (FFQ) to rank young children according to their intake of dairy and fish products by comparing food frequency estimates to the plasma phospholipid fatty acids pentadecanoic acid, eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA). Cross-sectional data for the present study were derived from the prospective cohort 'Environmental Triggers of Type 1 Diabetes Study'. Infants were recruited from the Norwegian general population during 2001-2007. One hundred and ten (age 3-10 years) children had sufficient volumes of plasma and FFQ filled in within 2 months from blood sampling and were included in this evaluation study. The quantitative determination of plasma phospholipid fatty acids was done by fatty acid methyl ester analysis. The association between the frequency of dairy and fish product intake and the plasma phospholipid fatty acids was assessed by a Spearman correlation analysis and by investigating whether participants were classified into the same quartiles of distribution. Significant correlations were found between pentadecanoic acid and the intake frequency of total dairy products (r=0.29), total fat dairy products (r=0.39), and cheese products (r=0.36). EPA and DHA were significantly correlated with the intake frequency of oily fish (r=0.26 and 0.37, respectively) and cod liver/fish oil supplements (r=0.47 for EPA and r=0.50 DHA). To a large extent, the FFQ was able to classify individuals into the same quartile as the relevant fatty acid biomarker. The present study suggests that, when using the plasma phospholipid fatty acids pentadecanoic acid, EPA, and DHA as biomarkers, the FFQ used in young children showed a moderate capability to rank the intake frequency of dairy products with a high-fat content and cod liver/fish oil supplements.

  19. Fish silage as feed ingredient for fish and livestock

    NARCIS (Netherlands)

    Rurangwa, E.; Vuuren, van A.M.; Poelman, M.

    2014-01-01

    The present report analyses through a literature review the potential of fish silage to valorise fish processing by-products into economically relevant protein sources for fish and livestock feed production in East Africa.

  20. Using MODIS NDVI products for vegetation state monitoring on the oil production territory in Western Siberia

    OpenAIRE

    Kovalev, Anton; Tokareva, Olga Sergeevna

    2016-01-01

    Article describes the results of using remote sensing data for vegetation state monitoring on the oil field territories in Western Siberia. We used MODIS data product providing the normalized difference vegetation index (NDVI) values. Average NDVI values of each studied area were calculated for the period from 2010 to 2015 with one year interval for June, July and August. Analysis was carried out via an open tool of geographic information system QGIS used for spatial analysis and calculation ...

  1. Partial and total fish meal replacement by agricultural products in the diets improve sperm quality in African catfish (Clarias gariepinus)

    NARCIS (Netherlands)

    Nyina-wamwiza, L.; Milla, S.; Pierrard, M.A.; Rurangwa, E.; Mandiki, S.N.M.; Look, van K.J.W.; Kestemont, P.

    2012-01-01

    This study investigated the long-term effects of total and partial replacement of dietary fish meal (FM) by a mixture of agricultural products on sperm quality of African catfish Clarias gariepinus. Four isonitrogenous and isoenergetic diets were formulated containing graded levels of either 50% FM

  2. Evaluation of partial water reuse systems used for Atlantic salmon smolt production at the White River National Fish Hatchery

    Science.gov (United States)

    Eight of the existing 9.1 m (30 ft) diameter circular culture tanks at the White River National Fish Hatchery in Bethel, Vermont, were retrofitted and plumbed into two 8,000 L/min partial water reuse systems to help meet the region's need for Atlantic salmon (Salmo salar) smolt production. The part...

  3. New approach for monitoring fish stress: A novel enzyme-functionalized label-free immunosensor system for detecting cortisol levels in fish.

    Science.gov (United States)

    Wu, Haiyun; Ohnuki, Hitoshi; Ota, Shirei; Murata, Masataka; Yoshiura, Yasutoshi; Endo, Hideaki

    2017-07-15

    Fishes display a wide variation in their physiological responses to stress, which is clearly evident in the plasma corticosteroid changes, chiefly cortisol levels in fish. As a well-known indicator of fish stress, a simple and rapid method for detecting cortisol changes especially sudden increases is desired. In this study, we describe an enzyme-functionalized label-free immunosensor system for detecting fish cortisol levels. Detection of cortisol using amperometry was achieved by immobilizing both anti-cortisol antibody (selective detection of cortisol) and glucose oxidase (signal amplification and non-toxic measurement) on an Au electrode surface with a self-assembled monolayer. This system is based on the maximum glucose oxidation output current change induced by the generation of a non-conductive antigen-antibody complex, which depends on the levels of cortisol in the sample. The immunosensor responded to cortisol levels with a linear decrease in the current in the range of 1.25-200ngml -1 (R=0.964). Since the dynamic range of the sensor can cover the normal range of plasma cortisol in fish, the samples obtained from the fish did not need to be diluted. Further, electrochemical measurement of one sample required only ~30min. The sensor system was applied to determine the cortisol levels in plasma sampled from Nile tilapia (Oreochromis niloticus), which were then compared with levels of the same samples determined using the conventional method (ELISA). Values determined using both methods were well correlated. These findings suggest that the proposed label-free immunosensor could be useful for rapid and convenient analysis of cortisol levels in fish without sample dilution. We also believe that the proposed system could be integrated in a miniaturized potentiostat for point-of-care cortisol detection and useful as a portable diagnostic in fish farms in the future. Copyright © 2016 Elsevier B.V. All rights reserved.

  4. Species-specific impacts of a small marine reserve on reef fish production and fishing productivity in the Turks and Caicos Islands

    NARCIS (Netherlands)

    Tupper, M.H.; Rudd, M.A.

    2002-01-01

    Marine reserves are widely considered to potentially benefit reef fisheries through emigration, yet the empirical basis for predicting the extent of this for small reserves is weak. The effects of fishing pressure and habitat on biomass and catch per unit effort (CPUE) of three species of exploited

  5. Using satellite data for monitoring temperature conditions in fishing areas of the Northeast Atlantic for improving prognosis of fishery.

    Science.gov (United States)

    Vanyushin, G.; Borisov, V.; Bogdanov, M.; Bulatova, T.

    2012-04-01

    The attempt to establish the relationship between current temperature conditions in fishing areas of the Northeast Atlantic (The Norwegian and Barents Seas) and the management of capelin fishery was made. The capelin stock depends on abundance of its predators, as well as on hydrological and climatic conditions, which affect the spawning success, the egg hatching, duration and direction of the larval drift, availability of micro and macrozooplankton food to capelin at its various life stages. Taking into account all these points and importance of capelin for Norwegian and Russian fisheries, we can easily understand an heightened interest in cause of the observed variations in capelin stocks. We are still inclined to see hydrology as the driving force of these variations. Hydrological conditions in concrete year influence on capelin directly, as well as its prey stocks and predators, which, in their turn, affect capelin. The sea surface temperature (SST) is the most suitable index of annual and seasonal variations in hydrological conditions. The temperature data were derived from satellite monitoring basically. Continuous long-term database on the sea surface temperature (SST) comprising results of regional satellite monitoring (the NOAA satellite data) is used to resolve several applied problems particularly for prognosis of fish recruitment strenght. The maps of SST were created with the satellite data, as well as information of vessels, buoies and coastal stations. Here we use the maps of SST in fishing areas of the Norwegian and Barents Seas to clarify impact which duration of warm and cold seasons has on successful survival of capelin during its first year of life. The identified relation between onset of these seasons and their duration can allow us to forecast strength of the next capelin year-classes. Seasonal dynamics of heat content water in areas of young capelin presence were analyzed by the time when the 5°C isotherm passed the 35°E meridian (from the

  6. Improving the productivity of imported dairy cattle on small-holder farms in Morocco through supplementation with fish silage blocks

    International Nuclear Information System (INIS)

    Guerouali, A.

    1999-01-01

    The present study was designed to identify problems that lower the productivity of imported dairy cattle in Morocco. For this purpose, a comprehensive survey was carried out on 8 small-holder farms over a period of two years. Analysis of the data collected indicated that in most of the herds reproductive performance was adequate (calving intervals ranging from 338 ± 11 to 420 ± 31 and services to conception ranging from 1.14 ± 0.13 to 1.91 ± 0.3), but the animals had difficulty in meeting the nutrient requirements for milk production. Although some farmers provided supplements to their animals they were either expensive or not available at the required time. One possible way of alleviating the problem was the introduction of a fish by-product into the dairy cattle ration. Two experiments were conducted, one at the Institute experimental farm and the other at a private farm selected for the survey. In both experiments, fish silage blocks were incorporated into the ration of dairy cattle in replacement of an equal amount of the most commonly used supplements. The introduction of fish silage blocks in the ration did not affect their intake or body condition. In addition, the yield and quality of the milk were maintained. This substitution allowed the farmer to utilize by-products from the fish industry which are readily available and less costly than most conventional supplementary feeds. It is concluded, that the proposed utilization of fish silage blocks will reduce the production costs and improve the economic efficiency of the small-holder farms. (author)

  7. Fish scale deformation analysis using scanning electron microscope: New potential biomarker in aquatic environmental monitoring of aluminum and iron contamination

    Energy Technology Data Exchange (ETDEWEB)

    Hidayati, Dewi; Sulaiman, Norela; Othman, Shuhaimi; Ismail, B. S. [School of Environmental and Natural Resource Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor (Malaysia)

    2013-11-27

    Fish scale has the potential to be a rapid biomarker due to its structure and high possibility to come into contact with any pollutant in the aquatic environment. The scale structure consists of osteoblastic cells and other bone materials such as collagen where it is possible to form a molecular complex with heavy metals such as aluminum and iron. Hence, aluminum and iron in water could possibly destroy the scale material and marked as a scale deformation that quantitatively could be analyzed by comparing it to the normal scale structure. Water sampling and fish cage experiment were performed between June and July 2011 in Porong river which represented the water body that has high aluminum and iron contamination. The filtered water samples were preserved and extracted using the acid-mixture procedure prior to measurement of the aluminum and iron concentrations using Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES), while samples for total suspended solid (TSS) analysis were kept at 4 °C in cool-boxes. The scales were cleaned with sterile water, then dehydrated in 30, 50, 70, and 90% ethanol and dried on filter papers. They were then mounted on an aluminum stub and coated with gold in a sputter coater prior to Scanning Electron Microscope (SEM) observation. According to the SEM analysis, it was found that there were several deformations on the scale samples taken from sites that have high concentrations of aluminum and iron i.e. the increasing number of pits, deformation and decreasing number of spherules and ridges while the control scale exhibited the normal features. However, the site with higher TSS and pH indicated lower aluminum effect. A moderate correlation was found between the number of pits with aluminum (r=0.43) and iron (r=0.41) concentrations. Fish scale deformation using SEM analysis can potentially be a rapid biomarker in aquatic monitoring of aluminum and iron contamination. However, the measurement must be accompanied by pH and

  8. Fish scale deformation analysis using scanning electron microscope: New potential biomarker in aquatic environmental monitoring of aluminum and iron contamination

    Science.gov (United States)

    Hidayati, Dewi; Sulaiman, Norela; Othman, Shuhaimi; Ismail, B. S.

    2013-11-01

    Fish scale has the potential to be a rapid biomarker due to its structure and high possibility to come into contact with any pollutant in the aquatic environment. The scale structure consists of osteoblastic cells and other bone materials such as collagen where it is possible to form a molecular complex with heavy metals such as aluminum and iron. Hence, aluminum and iron in water could possibly destroy the scale material and marked as a scale deformation that quantitatively could be analyzed by comparing it to the normal scale structure. Water sampling and fish cage experiment were performed between June and July 2011 in Porong river which represented the water body that has high aluminum and iron contamination. The filtered water samples were preserved and extracted using the acid-mixture procedure prior to measurement of the aluminum and iron concentrations using Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES), while samples for total suspended solid (TSS) analysis were kept at 4 °C in cool-boxes. The scales were cleaned with sterile water, then dehydrated in 30, 50, 70, and 90% ethanol and dried on filter papers. They were then mounted on an aluminum stub and coated with gold in a sputter coater prior to Scanning Electron Microscope (SEM) observation. According to the SEM analysis, it was found that there were several deformations on the scale samples taken from sites that have high concentrations of aluminum and iron i.e. the increasing number of pits, deformation and decreasing number of spherules and ridges while the control scale exhibited the normal features. However, the site with higher TSS and pH indicated lower aluminum effect. A moderate correlation was found between the number of pits with aluminum (r=0.43) and iron (r=0.41) concentrations. Fish scale deformation using SEM analysis can potentially be a rapid biomarker in aquatic monitoring of aluminum and iron contamination. However, the measurement must be accompanied by pH and

  9. L-Lake fish: L-Lake/Steel Creek Biological Monitoring Program, January 1986--December 1991

    International Nuclear Information System (INIS)

    Sayers, R.E. Jr.; Mealing, H.G. III

    1992-04-01

    The L Lake Biological Monitoring Program was designed to meet environmental regulatory requirements associated with the re-start of L-Reactor and address portions of Section 316(a) of the Clean Water Act, which requires an applicant for a discharge permit to provide scientific evidence that the discharge causes no significant impact on the indigenous ecosystem. The Department of Energy (DOE) must demonstrate that the discharge of L-Reactor effluent into L Lake will not inhibit the eventual establishment of a ''Balanced Biological Community'' (BBC) in at least 50% of the lake

  10. L-Lake fish: L-Lake/Steel Creek Biological Monitoring Program, January 1986--December 1991

    Energy Technology Data Exchange (ETDEWEB)

    Sayers, R.E. Jr.; Mealing, H.G. III [Normandeau Associates, Inc., New Ellenton, SC (United States)

    1992-04-01

    The L Lake Biological Monitoring Program was designed to meet environmental regulatory requirements associated with the re-start of L-Reactor and address portions of Section 316(a) of the Clean Water Act, which requires an applicant for a discharge permit to provide scientific evidence that the discharge causes no significant impact on the indigenous ecosystem. The Department of Energy (DOE) must demonstrate that the discharge of L-Reactor effluent into L Lake will not inhibit the eventual establishment of a ``Balanced Biological Community`` (BBC) in at least 50% of the lake.

  11. Spatially explicit measures of production of young alewives in Lake Michigan: Linkage between essential fish habitat and recruitment

    Science.gov (United States)

    Hook, Tomas O.; Rutherford, Edward S.; Brines, Shannon J.; Mason, Doran M.; Schwab, David J.; McCormick, Michael; Desorcie, Timothy J.

    2003-01-01

    The identification and protection of essential habitats for early life stages of fishes are necessary to sustain fish stocks. Essential fish habitat for early life stages may be defined as areas where fish densities, growth, survival, or production rates are relatively high. To identify critical habitats for young-of-year (YOY) alewives (Alosa pseud oharengus) in Lake Michigan, we integrated bioenergetics models with GIS (Geographic Information Systems) to generate spatially explicit estimates of potential population production (an index of habitat quality). These estimates were based upon YOY alewife bioenergetic growth rate potential and their salmonine predators’ consumptive demand. We compared estimates of potential population production to YOY alewife yield (an index of habitat importance). Our analysis suggested that during 1994–1995, YOY alewife habitat quality and yield varied widely throughout Lake Michigan. Spatial patterns of alewife yield were not significantly correlated to habitat quality. Various mechanisms (e.g., predator migrations, lake circulation patterns, alternative strategies) may preclude YOY alewives from concentrating in areas of high habitat quality in Lake Michigan.

  12. Simulating mechanisms for dispersal, production and stranding of small forage fish in temporary wetland habitats

    Science.gov (United States)

    Yurek, Simeon; DeAngelis, Donald L.; Trexler, Joel C.; Jopp, Fred; Donalson, Douglas D.

    2013-01-01

    Movement strategies of small forage fish (wetland habitats affect their overall population growth and biomass concentrations, i.e., availability to predators. These fish are often the key energy link between primary producers and top predators, such as wading birds, which require high concentrations of stranded fish in accessible depths. Expansion and contraction of seasonal wetlands induce a sequential alternation between rapid biomass growth and concentration, creating the conditions for local stranding of small fish as they move in response to varying water levels. To better understand how landscape topography, hydrology, and fish behavior interact to create high densities of stranded fish, we first simulated population dynamics of small fish, within a dynamic food web, with different traits for movement strategy and growth rate, across an artificial, spatially explicit, heterogeneous, two-dimensional marsh slough landscape, using hydrologic variability as the driver for movement. Model output showed that fish with the highest tendency to invade newly flooded marsh areas built up the largest populations over long time periods with stable hydrologic patterns. A higher probability to become stranded had negative effects on long-term population size, and offset the contribution of that species to stranded biomass. The model was next applied to the topography of a 10 km × 10 km area of Everglades landscape. The details of the topography were highly important in channeling fish movements and creating spatiotemporal patterns of fish movement and stranding. This output provides data that can be compared in the future with observed locations of fish biomass concentrations, or such surrogates as phosphorus ‘hotspots’ in the marsh.

  13. A latex agglutination test for the field determination of abnormal vitellogenin production in male fishes contaminated by estrogen mimics

    International Nuclear Information System (INIS)

    Magalhaes, Ilizabete; Pihan, Jean-Claude; Falla, Jairo

    2004-01-01

    Estrogen mimics are pollutants present in the aquatic environment. These compounds induce abnormalities in the reproductive system of male fishes, which lead to a total or partial male feminization, or to their demasculinization. Ultimately, these alterations could lead to a disappearance of the total contaminated fish population. Moreover, these toxic substances possess the capacity to mimic endogenous estrogens and to induce the abnormal production of vitellogenin (VTG) in male and immature fishes. The purpose of this research was to develop an easy, specific, cheap and fast method for diagnosing the contamination of male fishes by estrogen mimics, using VTG as biomarker. The selected method is based on a reverse latex agglutination test (rLAT), developed with monoclonal antibodies specific of this biomarker. The development of this VTG-rLAT has involved, firstly, the purification of carp VTG to produce monoclonal antibodies, specifics of this protein. One of these antibodies was selected to recover latex particles (diameter: 1 μm). Finally, the immunoreactivity of the VTG-rLAT was verified with different fish plasma samples from males treated with 17β-estradiol and non-treated males or females in vitellogenesis

  14. Coupled Ecosystem/Supply Chain Modelling of Fish Products from Sea to Shelf: The Peruvian Anchoveta Case

    Science.gov (United States)

    Avadí, Angel; Fréon, Pierre; Tam, Jorge

    2014-01-01

    Sustainability assessment of food supply chains is relevant for global sustainable development. A framework is proposed for analysing fishfood (fish products for direct human consumption) supply chains with local or international scopes. It combines a material flow model (including an ecosystem dimension) of the supply chains, calculation of sustainability indicators (environmental, socio-economic, nutritional), and finally multi-criteria comparison of alternative supply chains (e.g. fates of landed fish) and future exploitation scenarios. The Peruvian anchoveta fishery is the starting point for various local and global supply chains, especially via reduction of anchoveta into fishmeal and oil, used worldwide as a key input in livestock and fish feeds. The Peruvian anchoveta supply chains are described, and the proposed methodology is used to model them. Three scenarios were explored: status quo of fish exploitation (Scenario 1), increase in anchoveta landings for food (Scenario 2), and radical decrease in total anchoveta landings to allow other fish stocks to prosper (Scenario 3). It was found that Scenario 2 provided the best balance of sustainability improvements among the three scenarios, but further refinement of the assessment is recommended. In the long term, the best opportunities for improving the environmental and socio-economic performance of Peruvian fisheries are related to sustainability-improving management and policy changes affecting the reduction industry. Our approach provides the tools and quantitative results to identify these best improvement opportunities. PMID:25003196

  15. Coupled ecosystem/supply chain modelling of fish products from sea to shelf: the Peruvian anchoveta case.

    Directory of Open Access Journals (Sweden)

    Angel Avadí

    Full Text Available Sustainability assessment of food supply chains is relevant for global sustainable development. A framework is proposed for analysing fishfood (fish products for direct human consumption supply chains with local or international scopes. It combines a material flow model (including an ecosystem dimension of the supply chains, calculation of sustainability indicators (environmental, socio-economic, nutritional, and finally multi-criteria comparison of alternative supply chains (e.g. fates of landed fish and future exploitation scenarios. The Peruvian anchoveta fishery is the starting point for various local and global supply chains, especially via reduction of anchoveta into fishmeal and oil, used worldwide as a key input in livestock and fish feeds. The Peruvian anchoveta supply chains are described, and the proposed methodology is used to model them. Three scenarios were explored: status quo of fish exploitation (Scenario 1, increase in anchoveta landings for food (Scenario 2, and radical decrease in total anchoveta landings to allow other fish stocks to prosper (Scenario 3. It was found that Scenario 2 provided the best balance of sustainability improvements among the three scenarios, but further refinement of the assessment is recommended. In the long term, the best opportunities for improving the environmental and socio-economic performance of Peruvian fisheries are related to sustainability-improving management and policy changes affecting the reduction industry. Our approach provides the tools and quantitative results to identify these best improvement opportunities.

  16. Coupled ecosystem/supply chain modelling of fish products from sea to shelf: the Peruvian anchoveta case.

    Science.gov (United States)

    Avadí, Angel; Fréon, Pierre; Tam, Jorge

    2014-01-01

    Sustainability assessment of food supply chains is relevant for global sustainable development. A framework is proposed for analysing fishfood (fish products for direct human consumption) supply chains with local or international scopes. It combines a material flow model (including an ecosystem dimension) of the supply chains, calculation of sustainability indicators (environmental, socio-economic, nutritional), and finally multi-criteria comparison of alternative supply chains (e.g. fates of landed fish) and future exploitation scenarios. The Peruvian anchoveta fishery is the starting point for various local and global supply chains, especially via reduction of anchoveta into fishmeal and oil, used worldwide as a key input in livestock and fish feeds. The Peruvian anchoveta supply chains are described, and the proposed methodology is used to model them. Three scenarios were explored: status quo of fish exploitation (Scenario 1), increase in anchoveta landings for food (Scenario 2), and radical decrease in total anchoveta landings to allow other fish stocks to prosper (Scenario 3). It was found that Scenario 2 provided the best balance of sustainability improvements among the three scenarios, but further refinement of the assessment is recommended. In the long term, the best opportunities for improving the environmental and socio-economic performance of Peruvian fisheries are related to sustainability-improving management and policy changes affecting the reduction industry. Our approach provides the tools and quantitative results to identify these best improvement opportunities.

  17. Effect of production quotas on economic and environmental values of growth rate and feed efficiency in sea cage fish farming.

    Science.gov (United States)

    Besson, M; de Boer, I J M; Vandeputte, M; van Arendonk, J A M; Quillet, E; Komen, H; Aubin, J

    2017-01-01

    In sea cage fish farming, production quotas aim to constrain the impact of fish farming on the surrounding ecosystem. It is unknown how these quotas affect economic profitability and environmental impact of genetic improvement. We combined bioeconomic modelling with life cycle assessment (LCA) to calculate the economic (EV) and environmental (ENV) values of thermal growth coefficient (TGC) and feed conversion ratio (FCR) of sea bass reared in sea cages, given four types of quota commonly used in Europe: annual production (Qprod), annual feed distributed (Qannual_feed), standing stock (Qstock), and daily feed distributed (Qdaily_feed). ENV were calculated for LCA impact categories climate change, eutrophication and acidification. ENV were expressed per ton of fish produced per year (ENV(fish)) and per farm per year (ENV(farm)). Results show that irrespective of quota used, EV of FCR as well as ENV(fish) and ENV(farm) were always positive, meaning that improving FCR increased profit and decreased environmental impacts. However, the EV and the ENV(fish) of TGC were positive only when quota was Qstock or Qdaily_feed. Moreover, the ENV(farm) of TGC was negative in Qstock and Qdaily_feed quotas, meaning that improving TGC increased the environmental impact of the farm. We conclude that Qstock quota and Qdaily_feed quota are economically favorable to a genetic improvement of TGC, a major trait for farmers. However, improving TGC increases the environmental impact of the farm. Improving FCR represents a good opportunity to balance out this increase but more information on its genetic background is needed to develop breeding programs improving FCR.

  18. Effect of production quotas on economic and environmental values of growth rate and feed efficiency in sea cage fish farming.

    Directory of Open Access Journals (Sweden)

    M Besson

    Full Text Available In sea cage fish farming, production quotas aim to constrain the impact of fish farming on the surrounding ecosystem. It is unknown how these quotas affect economic profitability and environmental impact of genetic improvement. We combined bioeconomic modelling with life cycle assessment (LCA to calculate the economic (EV and environmental (ENV values of thermal growth coefficient (TGC and feed conversion ratio (FCR of sea bass reared in sea cages, given four types of quota commonly used in Europe: annual production (Qprod, annual feed distributed (Qannual_feed, standing stock (Qstock, and daily feed distributed (Qdaily_feed. ENV were calculated for LCA impact categories climate change, eutrophication and acidification. ENV were expressed per ton of fish produced per year (ENV(fish and per farm per year (ENV(farm. Results show that irrespective of quota used, EV of FCR as well as ENV(fish and ENV(farm were always positive, meaning that improving FCR increased profit and decreased environmental impacts. However, the EV and the ENV(fish of TGC were positive only when quota was Qstock or Qdaily_feed. Moreover, the ENV(farm of TGC was negative in Qstock and Qdaily_feed quotas, meaning that improving TGC increased the environmental impact of the farm. We conclude that Qstock quota and Qdaily_feed quota are economically favorable to a genetic improvement of TGC, a major trait for farmers. However, improving TGC increases the environmental impact of the farm. Improving FCR represents a good opportunity to balance out this increase but more information on its genetic background is needed to develop breeding programs improving FCR.

  19. Natural Food Additives and Preservatives for Fish-Paste Products: A Review of the Past, Present, and Future States of Research

    Directory of Open Access Journals (Sweden)

    Khawaja Muhammad Imran Bashir

    2017-01-01

    Full Text Available Fish-paste products, also known as fish cakes or surimi-based products, are worldwide favorites. Surimi, a wet protein concentrate of fish muscle, is used as an intermediate raw material to produce surimi seafood. The flavor, texture, taste, shelf-life, and market value of surimi-based products depend on the source of the fish meat, type of applied heat treatment, and additives used to prepare the surimi. While preparing surimi with chemical additives, several problems have been observed, such as a lack of unique characteristics, inferior acceptability, and poor functionality. Various types of fish-paste products have been developed by using different ingredients (e.g., vegetables, seafood, herbs and oriental medicines, grains and roots including carrots, and functional food materials. However, a systematic review of fish-paste products prepared using natural food additives has not yet been performed. Therefore, the quality characteristics of fish-paste products and their functionalities were elucidated in this study. With the increasing demand for surimi seafood products, the functional properties, physiochemical properties, and shelf-life of surimi-based products need to be improved. This review will aid the preparation of new value-added products in the surimi industry.

  20. Cerenkov Detectors for Fission Product Monitoring in Reactor Coolant Water

    Energy Technology Data Exchange (ETDEWEB)

    Strindehag, O

    1967-09-15

    The expected properties of Cerenkov detectors when used for fission product monitoring in water cooled reactors and test loops are discussed from the point of view of the knowledge of the sensitivity of these detectors to some beta emitting isotopes. The basic theory for calculation of the detector response is presented, taking the optical transmission in the sample container and the properties of the photomultiplier tube into account. Special attention is paid to the energy resolution of this type of Cerenkov detector. For the design of practical detectors the results from several investigations of various window and reflector materials are given, and the selection of photomultiplier tubes is briefly discussed. In the case of optical reflectors and photomultiplier tubes reference is made to two previous reports by the author. The influence of the size and geometry of the sample container on the energy resolution follows from a separate investigation, as well as the relative merits of sample containers with transparent inner walls. Provided that the energy resolution of the Cerenkov detector is sufficiently high, there are several reasons for using this detector type for failed-fuel-element detection. It seems possible to attain the desired energy resolution by careful detector design.

  1. New generation of monitors for PAH's from synthetic fuel production

    Energy Technology Data Exchange (ETDEWEB)

    Gammage, R B; Vo-Dinh, T; Hawthorne, A R; Thorngate, J H; Parkinson, W W

    1977-01-01

    A gap exists between the crude techniques available for measuring polynuclear aromatic (PNA) compounds in the workplace, and the sophisticated analytical tools used in the laboratory for a much more complete characterization of pollutants from synfuel operations such as coal, tar sand, and oil shale processing. Real-time or near-real instruments suitable for use by industrial hygienists are urgently needed to measure fugitive emissions. Several new instruments and instrumental techniques are described that could satisfy some of these needs. They include second derivative UV-absorption, synchronous luminescence, room-temperature phosphorescence, photoacoustic spectrometers, a portable mass spectrometer, differential sublimation, and thermoluminescence. Already, studies to evaluate the practicality of these approaches have indicated a suitability for monitoring naphthalene and its alkyl derivatives at parts-per-billion (ppB) concentrations either in the vapor or the solution phase, trace amounts of phenolic compounds, and thiocyanate in by-product water, and suitability for the rapid analysis of samples filtered or spotted on paper adsorbents.

  2. Process, product, and waste-stream monitoring with fiber optics

    International Nuclear Information System (INIS)

    Milanovich, F.P.; Hirschfeld, T.

    1983-07-01

    Fiber optic technology, motivated by communications and defense applications, has advanced significantly the past ten years. In particular, advances have been made in visible radiation transmission efficiency with concurrent reductions in fiber size, weight, and cost. Researchers at the Lawrence Livermore National Laboratory (LLNL) coupled these advances in fiber optic technology with analytical fluorescence analysis to establish a new technology - remote fiber fluorimetry (RFF). Laser-based RFF offers the potential to measure and monitor from one central and remote laboratory, on-line, and in near real time, trace (ppM) to substantial (g/L) concentrations of selected chemical species in typical process, product, and waste streams. The fluorimeter consists of a fluorescence or Raman spectrometer; unique coupling optics that separates input excitation (laser) radiation from return (fluorescence) radiation; a fiber optic cable; and an optrode - a terminal that interfaces the fiber to the measurement point, which is designed to respond quantitatively to a particular chemical species. At LLNL, research is underway into optrodes that measure pressure, temperature, and pH and those that detect and quantify various actinides, sulfates, inorganic chloride, hydrogen sulfide, aldehydes, and alcohols

  3. Optimizing headspace sampling temperature and time for analysis of volatile oxidation products in fish oil

    DEFF Research Database (Denmark)

    Rørbæk, Karen; Jensen, Benny

    1997-01-01

    Headspace-gas chromatography (HS-GC), based on adsorption to Tenax GR(R), thermal desorption and GC, has been used for analysis of volatiles in fish oil. To optimize sam sampling conditions, the effect of heating the fish oil at various temperatures and times was evaluated from anisidine values (AV...

  4. Experimental whole-lake dissolved organic carbon increase alters fish diet and density but not growth or productivity

    Science.gov (United States)

    Koizumi, Shuntaro; Craig, Nicola; Zwart, Jacob A.; Kelly, Patrick T.; Ziegler, Jacob P.; Weidel, Brian C.; Jones, Stuart E.; Solomon, Christopher T.

    2018-01-01

    Negative relationships between dissolved organic carbon (DOC) concentration and fish productivity have been reported from correlative studies across lakes, but to date there have not been experimental tests of these relationships. We increased the DOC concentration in a lake by 3.4 mg L-1, using a before-after control-impact (BACI) design, to quantify the effects on the productivity and population structure of Largemouth Bass (Micropterus salmoides). Greater DOC reduced the volume of the epilimnion, the preferred habitat of Largemouth Bass, resulting in increased bass density. The likelihood that adult bass had empty diets decreased despite this increase in bass density; diet composition also changed. There was no apparent change in bass growth or condition. Overall, there was no net change in Largemouth Bass productivity. However, changes in YOY and juvenile recruitment and feeding success suggest the possibility that future effects could occur. Our results are the first to examine the effects of an increase in DOC on fish productivity through a five-year temporal lens, which demonstrates that the relationship between DOC and fish productivity is multi-dimensional and complex.

  5. Benthic and fish population monitoring associated with a marine protected area in the nearshore waters of Grenada, Eastern Caribbean

    Directory of Open Access Journals (Sweden)

    Robert Anderson

    2012-03-01

    Full Text Available Annual benthic and fish population surveys were completed at five locations in the nearshore waters along Grenada´s southwest coast during 2008-2010. Two survey sites are located in a newly launched Marine Protected Area (MPA. Photo Quadrat (PQ and Point Line Intercept (PLI surveys were used to determine substrate cover. Algae was the primary live cover increasing significantly from 45.9% in 2008 to 52.7% in 2010 (PLI. Algae was also predominant (61.0%-59.3% in the PQ surveys although annual variation was not significant. Hard coral cover ranged from 16.5% to 15.4% (PLI and 11.4% to12.0% (PQ with no significant differences between years. Branching and encrusting corals occurred more frequently than massive corals. In the three annual surveys neither algal cover nor hard coral varied significantly between MPA and non-protected areas (PLI. Relative abundance of fishes along 30x2m belt transects did not vary significantly among years however density of fishes decreased significantly across years for most major groups. Chromis spp. dominated the survey sites at 65.2% in 2008 and 49.8% in 2010, followed by territorial damselfish,11.1% and 15.5%, wrasse increased from 7.3% to 15.5%. Both the substrate cover and fish survey data analyses indicated a stable but degraded community. Annual surveys are planned at these sites for the foreseeable future. Existing and future data from this project will be valuable in determining the efficacy of MPA management, guiding resource management decisions and monitoring the health status of Grenada’s valuable reef systemsUn estudio sobre poblaciones bentónicas y de peces fue realizado en cinco localidades en la zona costera en el suroeste de Grenada entre 2008 y 2010. Dos sitios se ubicaron en una Área Marina Portegida (AMP recientemente creada. Para determinar la cobertura se utilizaron foto-cuadrantes (FQ y transectos de intersección de puntos (TIP. Las algas fueron el principal componente del bentos

  6. Geospatial climate monitoring products: Tools for food security assessment

    Science.gov (United States)

    Verdin, James Patrick

    Many of the 250 million people living in the drylands of Sub-Saharan Africa are food insecure---they lack access at all times to enough food for an active and healthy life. Their vulnerability is due in large measure to highly variable climatic conditions and a dependence on rainfed agriculture. Famine, the most extreme food security emergency, is caused by crop failure due to bad weather, conflict, or both. Famine is a slow onset disaster, culminating after two or more bad growing seasons. After the disastrous African famines of the 1970s and 1980s, the U.S. established the Famine Early Warning System (FEWS) to make the observations of climatic and socioeconomic variables needed for early detection of food security emergencies. Two geospatial climate monitoring products, rainfall estimate and vegetation index images derived from satellite data, are operationally used by FEWS analysts. This dissertation describes research to derive new products from them to reduce ambiguity and improve the link between early warning and early response. First, rainfall estimate images were used in a geospatial crop water accounting scheme. The resulting water requirement satisfaction index was used to estimate crop yield, and a correlation of 0.80 with conventional yield reports was obtained for the 1997 maize harvest in Zimbabwe. Thus, the agricultural significance of remotely sensed patterns of precipitation in time and space was made more clear. The second product tested was the expression of a seasonal climate forecast as a series of vegetation index anomaly images. Correlations between sea surface temperature anomalies in the equatorial Pacific and vegetation index anomalies in Southern Africa were established and predictive relationships cross-validated. Using model forecast values of Pacific sea surface temperature from the National Oceanic and Atmospheric Administration for January, February, and March, forecast images of vegetation index anomalies were prepared prior to the

  7. Analyses of Trawling Track and Fishing Activity Based on the Data of Vessel Monitoring System (VMS):A Case Study of the Single Otter Trawl Vessels in the Zhoushan Fishing Ground

    Institute of Scientific and Technical Information of China (English)

    WANG Yang; WANG Yingbin; ZHENG Ji

    2015-01-01

    The original purpose of Vessel Monitoring System (VMS) is for enforcement and control of vessel sailing. With the ap-plication of VMS in fishing vessels, more and more population dynamic studies have used VMS data to improve the accuracy of fisheries stock assessment. In this paper, we simulated the trawl trajectory under different time intervals using the cubic Hermite spline (cHs) interpolation method based on the VMS data of 8 single otter trawl vessels (totally 36000 data items) fishing in Zhou-shan fishing ground from September 2012 to December 2012, and selected the appropriate time interval. We then determined vessels’ activities (fishing or non-fishing) by comparing VMS speed data with the corresponding speeds from logbooks. The results showed that the error of simulated trajectory greatly increased with the increase of time intervals of VMS data when they were longer than 30 minutes. Comparing the speeds from VMS with those from the corresponding logbooks, we found that the vessels’ speeds were be-tween 2.5kn and 5.0kn in fishing. The cHs interpolation method is a new choice for improving the accuracy of estimation of sailing trajectory, and the VMS can be used to determine the vessels’ activities with the analysis of their trajectories and speeds. Therefore, when the fishery information is limited, VMS can be one of the important data sources for fisheries stock assessment, and more at-tention should be paid to its construction and application to fisheries stock assessment and management.

  8. Fish under exercise

    NARCIS (Netherlands)

    Palstra, A.P.; Planas, J.V.

    2011-01-01

    Improved knowledge on the swimming physiology of fish and its application to fisheries science and aquaculture (i.e., farming a fitter fish) is currently needed in the face of global environmental changes, high fishing pressures, increased aquaculture production as well as increased concern on fish

  9. Impact of cooking and handling conditions on furanic compounds in breaded fish products.

    Science.gov (United States)

    Pérez-Palacios, T; Petisca, C; Henriques, R; Ferreira, I M P L V O

    2013-05-01

    This study evaluates the influence of cooking and handling conditions on the quantity of furanic compounds (furan, 2-furfural, furfuryl alcohol, 2-pentylfuran, 5-hydroxymethylfurfural) in breaded fish products. Oven-baking and reheating in the microwave lead to low furanic compounds formation in comparison with deep-frying. The use of olive oil for deep-frying promoted higher levels of furanic compounds than sunflower oil. The amounts of these compounds diminished as the temperature and time of deep-frying decreased as well as after a delay after deep-frying. Thus, the generation of furanic compounds can be minimized by adjusting the cooking method and conditions, such as using an electric oven, deep-frying in sunflower oil at 160°C during 4min, or waiting 10min after cooking. However, these conditions that reduce furanic compounds levels also reduce the content of volatile compounds related to the aroma and flavour of fried foods. In this sense, new efforts should be done to reduce the formation of furanic compounds without being detrimental to the volatile profile. Copyright © 2013 Elsevier Ltd. All rights reserved.

  10. Mesophilic anaerobic treatment of sludge from saline fish farm effluents with biogas production

    Energy Technology Data Exchange (ETDEWEB)

    Gebauer, R. [Finnmark University College, Alta (Norway). Dept. of Aquaculture and Natural Sciences

    2004-06-01

    The mesophilic anaerobic treatment of sludge from saline fish farm effluents (total solids (TS): 8.2-10.2 wt%, chemical oxygen demand (COD): 60-74 g/l, sodium (Na): 10-10.5 g/l) was carried out in continuously stirred tank reactors (CSTRs) at 35 {sup o}C. COD stabilization between 36% and 55% and methane yields between 0.114 and 0.184 l/g COD added were achieved. However, the process was strongly inhibited, presumably by sodium, and unstable, with propionic acid being the main compound of the volatile fatty acids (VFA). When diluting the sludge 1:1 with tap water (Na: 5.3 g/l), the inhibition could be overcome and a stable process with low VFA concentrations was achieved. The results of the study are used to make recommendations for the configuration of full-scale treatment plants for the collected sludge from one salmon farming licence and to estimate the energy production from these plants. (Author)

  11. The histamine content of dried flying fish products in Taiwan and the isolation of halotolerant histamine-forming bacteria.

    Science.gov (United States)

    Kung, Hsien-Feng; Huang, Chun-Yung; Lin, Chia-Min; Liaw, Lon-Hsiu; Lee, Yi-Chen; Tsai, Yung-Hsiang

    2015-06-01

    Thirty dried flying fish products were purchased from fishing village stores in Taiwan and tested to detect the presence of histamine and histamine-forming bacteria. Except for histamine and cadaverine, the average content of various biogenic amines in the tested samples was less than 3.5 mg/100 g. Eight (26.6%) dried flying fish samples had histamine levels greater than the United States Food and Drug Administration guideline of 5 mg/100 g for scombroid fish and/or scombroid products, whereas four (13.3%) samples contained more than the hazard action level of 50 mg/100 g. One histamine-producing bacterial isolate was identified as Staphylococcus xylosus by 16S rDNA sequencing with polymerase chain reaction amplification. This isolate was capable of producing 507.8 ppm of histamine in trypticase soy broth supplemented with 1.0% l-histidine (TSBH). The S. xylosus isolate was a halotolerant bacterium that had a consistent ability to produce more than 300 ppm of histamine at 3% sodium chloride concentration in TSBH medium after 72 hours. Copyright © 2015. Published by Elsevier B.V.

  12. The histamine content of dried flying fish products in Taiwan and the isolation of halotolerant histamine-forming bacteria

    Directory of Open Access Journals (Sweden)

    Hsien-Feng Kung

    2015-06-01

    Full Text Available Thirty dried flying fish products were purchased from fishing village stores in Taiwan and tested to detect the presence of histamine and histamine-forming bacteria. Except for histamine and cadaverine, the average content of various biogenic amines in the tested samples was less than 3.5 mg/100 g. Eight (26.6% dried flying fish samples had histamine levels greater than the United States Food and Drug Administration guideline of 5 mg/100 g for scombroid fish and/or scombroid products, whereas four (13.3% samples contained more than the hazard action level of 50 mg/100 g. One histamine-producing bacterial isolate was identified as Staphylococcus xylosus by 16S rDNA sequencing with polymerase chain reaction amplification. This isolate was capable of producing 507.8 ppm of histamine in trypticase soy broth supplemented with 1.0% l-histidine (TSBH. The S. xylosus isolate was a halotolerant bacterium that had a consistent ability to produce more than 300 ppm of histamine at 3% sodium chloride concentration in TSBH medium after 72 hours.

  13. The community composition and production of phytoplankton in fish pens of Cape Bolinao, Pangasinan: a field study

    International Nuclear Information System (INIS)

    Yap, Leni G.; Azanza, Rhodora V.; Talaue-McManus, Liana

    2004-01-01

    From 1995 up to the present, fish pens proliferated in the municipal waters of Bolinao, northern Philippines. Since then, fish kills and phytoplankton blooms have been recurrent. Have fishpens altered the phytoplankton community composition and production of these waters? The phytoplankton community in Cape Bolinao, Lingayen Gulf is typical of a tropical coastal area where diatoms alternate with dinoflagellates during the dry and wet seasons. In the nutrient-rich fish pens, phytoplankton in this study showed a lower diatom/dinoflagellate ratio and unusually high phytoplankton counts of 10 4 cells/l and even as high as 10 5 cells/l. Correlations between physico-chemical parameters, phytoplankton production and community composition were made in 2001. This paper tried to explain the occurrence of a Cylindrotheca closterium bloom (10 5 cells/l), during the dry season of the same year and a Prorocentrum minimum bloom (4.7 x 10 5 cells/l), which accompanied a massive fish kill during January 2002

  14. Authentication of Closely Related Fish and Derived Fish Products Using Tandem Mass Spectrometry and Spectral Library Matching

    NARCIS (Netherlands)

    Nessen, Merel A.; Zwaan, van der Dennis J.; Grevers, Sander; Dalebout, Hans; Staats, Martijn; Kok, Esther; Palmblad, Magnus

    2016-01-01

    Proteomics methodology has seen increased application in food authentication, including tandem mass spectrometry of targeted species-specific peptides in raw, processed, or mixed food products. We have previously described an alternative principle that uses untargeted data acquisition and

  15. Young-of-the-year fish assemblages as an alternative to adult fish monitoring for ecological quality evaluation of running waters

    Czech Academy of Sciences Publication Activity Database

    Jurajda, Pavel; Slavík, O.; White, S.M.; Adámek, Zdeněk

    2010-01-01

    Roč. 644, č. 1 (2010), s. 89-101 ISSN 0018-8158 R&D Projects: GA MŠk LC522 Institutional research plan: CEZ:AV0Z60930519 Keywords : 0+ Fish * Water Framework Directive * Rivers * Biological quality element Subject RIV: EH - Ecology, Behaviour Impact factor: 1.964, year: 2010

  16. Restructured fish product from white croacker (Micropogonias furnieri mince using microbial transglutaminas

    Directory of Open Access Journals (Sweden)

    Alex Augusto Gonçalves

    2010-08-01

    Full Text Available This study aimed at determining the influence of three concentrations of commercial transglutaminase enzyme in restructured fillet of minced fish from white croacker (Micropogonias furnieri, one of the four marine species with notability in Brazil. The restructured fillet developed had advantages when compared to traditional fillet, such as absence of spine and less flavour intensity (washes cycles. Washing process for white croacker mince was compared with five clarification agents: water (control, phosphoric acid (H3PO4, sodium chloride (NaCl, calcium carbonate (CaCO3 and sodium bicarbonate (NaHCO3. The higher quality product (whiteness was obtained with calcium carbonate washes. Three concentrations (1.5, 1.0 and 0.5% of microbial transglutaminase MGTase (Active TG-B %v/v and Active TG-BP %w/w were compared, in order to produce fish restructured product (boneless fillet. The concentration of 1.5% (both enzymes, produced better results. The restructured products were compared by sensory analysis and showed better sensory parameters (appearance, odour, flavour and texture samples treated with Active TG-B (solution form.Este estudo teve como objetivo determinar a influência de três concentrações de enzima transglutaminase comercial em filés reestruturado a partir de polpa de corvina (Micropogonias furnieri, uma das quatro espécies marinhas notáveis no Brasil. O filé reestruturado desenvolvido tem vantagens quando comparado aos filés tradicionais, tais como, a ausência da espinhas e sabor menos intenso (ciclos de lavagens. O processo de lavagem da polpa de corvina foi comparado com cinco agentes clarificantes: água (controle, ácido fosfórico (H3PO4, cloreto de sódio (NaCl, carbonato de cálcio (CaCO3 e bicarbonato de sódio (NaHCO3. O produto de qualidade superior (mais branco foi obtido com a lavagem com carbonato de cálcio. Três concentrações (1,5%, 1,0% e 0,5% de transglutaminase microbiana (Activa TG-B % v/v e Activa TG

  17. An ecological model of the habitat mosaic in estuarine nursery areas: Part II – Projecting effects of sea level rise on fish production

    Science.gov (United States)

    Understanding the response of fish populations to habitat change mediated by sea level rise (SLR) is a key component of ecosystem-based management. Yet, no direct link has been established between habitat change due to SLR and fish population production. Here we take a coupled ...

  18. Production of microscale particles from fish bone by gas flow assisted laser ablation

    International Nuclear Information System (INIS)

    Boutinguiza, M.; Lusquinos, F.; Comesana, R.; Riveiro, A.; Quintero, F.; Pou, J.

    2007-01-01

    Recycled wastes from fish and seafood can constitute a source of precursor material for different applications in the biomedical field such as bone fillers or precursor material for bioceramic coatings to improve the osteointegration of metallic implants. In this work, fish bones have been used directly as target in a laser ablation system. A pulsed Nd:YAG laser was used to ablate the fish bone material and a transverse air flow was used to extract the ablated material out of the interaction zone. The particles collected at a filter were in the micro and nanoscale range. The morphology as well as the composition of the obtained particles were characterized by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX) and transmission electron microscopy (TEM). The results reveal that the composition of the analyzed particles is similar to that of the inorganic part of the fish bone

  19. Production of microscale particles from fish bone by gas flow assisted laser ablation

    Science.gov (United States)

    Boutinguiza, M.; Lusquiños, F.; Comesaña, R.; Riveiro, A.; Quintero, F.; Pou, J.

    2007-12-01

    Recycled wastes from fish and seafood can constitute a source of precursor material for different applications in the biomedical field such as bone fillers or precursor material for bioceramic coatings to improve the osteointegration of metallic implants. In this work, fish bones have been used directly as target in a laser ablation system. A pulsed Nd:YAG laser was used to ablate the fish bone material and a transverse air flow was used to extract the ablated material out of the interaction zone. The particles collected at a filter were in the micro and nanoscale range. The morphology as well as the composition of the obtained particles were characterized by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX) and transmission electron microscopy (TEM). The results reveal that the composition of the analyzed particles is similar to that of the inorganic part of the fish bone.

  20. Site-level evaluation of satellite-based global terrestrial gross primary production and net primary production monitoring.

    Science.gov (United States)

    David P. Turner; William D. Ritts; Warren B. Cohen; Thomas K. Maeirsperger; Stith T. Gower; Al A. Kirschbaum; Steve W. Runnings; Maosheng Zhaos; Steven C. Wofsy; Allison L. Dunn; Beverly E. Law; John L. Campbell; Walter C. Oechel; Hyo Jung Kwon; Tilden P. Meyers; Eric E. Small; Shirley A. Kurc; John A. Gamon

    2005-01-01

    Operational monitoring of global terrestrial gross primary production (GPP) and net primary production (NPP) is now underway using imagery from the satellite-borne Moderate Resolution Imaging Spectroradiometer (MODIS) sensor. Evaluation of MODIS GPP and NPP products will require site-level studies across a range of biomes, with close attention to numerous scaling...

  1. Authentication of Closely Related Fish and Derived Fish Products Using Tandem Mass Spectrometry and Spectral Library Matching.

    Science.gov (United States)

    Nessen, Merel A; van der Zwaan, Dennis J; Grevers, Sander; Dalebout, Hans; Staats, Martijn; Kok, Esther; Palmblad, Magnus

    2016-05-11

    Proteomics methodology has seen increased application in food authentication, including tandem mass spectrometry of targeted species-specific peptides in raw, processed, or mixed food products. We have previously described an alternative principle that uses untargeted data acquisition and spectral library matching, essentially spectral counting, to compare and identify samples without the need for genomic sequence information in food species populations. Here, we present an interlaboratory comparison demonstrating how a method based on this principle performs in a realistic context. We also increasingly challenge the method by using data from different types of mass spectrometers, by trying to distinguish closely related and commercially important flatfish, and by analyzing heavily contaminated samples. The method was found to be robust in different laboratories, and 94-97% of the analyzed samples were correctly identified, including all processed and contaminated samples.

  2. Discrimination of in vitro and in vivo digestion products of meat proteins from pork, beef, chicken, and fish.

    Science.gov (United States)

    Wen, Siying; Zhou, Guanghong; Song, Shangxin; Xu, Xinglian; Voglmeir, Josef; Liu, Li; Zhao, Fan; Li, Mengjie; Li, Li; Yu, Xiaobo; Bai, Yun; Li, Chunbao

    2015-11-01

    In vitro digestion products of proteins were compared among beef, pork, chicken, and fish. Gastric and jejunal contents from the rats fed these meat proteins were also compared. Cooked pork, beef, chicken, and fish were homogenized and incubated with pepsin alone or followed by trypsin. The digestion products with molecular weights of less than 3000 Da were identified with MALDI-TOF-MS and nano-LC-MS/MS. Gastric and jejunal contents obtained from the rats fed the four meat proteins for 7 days were also analyzed. After pepsin digestion, pork, and beef samples had a greater number of fragments in similarity than chicken and fish samples, but the in vitro digestibility was the greatest (p 0.05). A total of 822 and 659 peptides were identified from the in vitro and in vivo digestion products, respectively. Our results could interpret for the differences in physiological functions after the ingestion of different species of meat. © 2015 The Authors. PROTEOMICS Published by Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

  3. Application of Response Surface Methodology to study the effect of different calcium sources in fish muscle-alginate restructured products

    Directory of Open Access Journals (Sweden)

    Helena María Moreno

    2011-03-01

    Full Text Available Sodium alginate needs the presence of calcium ions to gelify. For this reason, the contribution of the calcium source in a fish muscle mince added by sodium alginate, makes gelification possible, resulting a restructured fish product. The three different calcium sources considered were: Calcium Chloride (CC; Calcium Caseinate (CCa; and Calcium lactate (CLa. Several physical properties were analyzed, including mechanical properties, colour and cooking loss. Response Surface Methodology (RSM was used to determine the contribution of different calcium sources to a restructured fish muscle. The calcium source that modifies the system the most is CC. A combination of CC and sodium alginate weakened mechanical properties as reflected in the negative linear contribution of sodium alginate. Moreover, CC by itself increased lightness and cooking loss. The mechanical properties of restructured fish muscle elaborated were enhanced by using CCa and sodium alginate, as reflected in the negative linear contribution of sodium alginate. Also, CCa increased cooking loss. The role of CLa combined with sodium alginate was not so pronounced in the system discussed here.

  4. Importance of benthic production to fish populations in Lake Mead prior to the establishment of quagga mussels

    Science.gov (United States)

    Umek, John; Chandra, Sudeep; Rosen, Michael; Wittmann, Marion; Sullivan, Joe; Orsak, Erik

    2010-01-01

    Limnologists recently have developed an interest in quantifying benthic resource contributions to higher-level consumers. Much of this research focuses on natural lakes with very little research in reservoirs. In this study, we provide a contemporary snapshot of the food web structure of Lake Mead to evaluate the contribution of benthic resources to fish consumers. In addition, we document the available food to fishes on soft sediments and changes to the invertebrate community over 2 time periods. Benthic invertebrate food availability for fishes is greater in Las Vegas Bay than Overton Arm. Las Vegas Bay is dominated by oligochaetes, whose biomass increased with depth, while Overton Arm is dominated by chironomids, whose biomass did not change with depth. Diet and isotopic measurements indicate the fish community largely relies on benthic resources regardless of basin (Las Vegas Bay >80%; Overton Arm >92%); however, the threadfin shad likely contribute more to largemouth and striped bass production in Overton Arm versus Las Vegas Bay. A 2-time period analysis, pre and post quagga mussel establishment and during lake level declines, suggests there is no change in the density of benthic invertebrates in Boulder Basin, but there were greater abundances of select taxa in this basin by season and depth than in other basins. Given the potential of alterations as a result of the expansion of quagga mussel and the reliance of the fishery on benthic resources, future investigation of basin specific, benthic processes is recommended.

  5. Using sound to modify fish behavior at power-production and water-control facilities: A workshop. Phase 2: Final report

    International Nuclear Information System (INIS)

    Carlson, T.J.; Popper, A.N.

    1997-06-01

    A workshop on ''''Use of Sound for Fish Protection at Power-Production and Water-Control Facilities'''' was held in Portland, Oregon on December 12--13, 1995. This workshop convened a 22-member panel of international experts from universities, industry, and government to share knowledge, questions, and ideas about using sound for fish guidance. Discussions involved in a broad range of indigenous migratory and resident fish species and fish-protection issues in river systems, with particular focus on the Columbia River Basin. Because the use of sound behavioral barriers for fish is very much in its infancy, the workshop was designed to address the many questions being asked by fishery managers and researchers about the feasibility and potential benefits of using sound to augment physical barriers for fish protection in the Columbia River system

  6. Using Sound to Modify Fish Behavior at Power-Production and Water-Control Facilities: A Workshop December 12-13, 1995. Phase II: Final Report.

    Energy Technology Data Exchange (ETDEWEB)

    Carlson, Thomas J. [ed.] [Pacific Northwest National Lab., Richland, WA (United States); Popper, Arthur N. [ed.] [Univ. of Maryland, College Park, MD (United States)

    1997-06-01

    A workshop on ``Use of Sound for Fish Protection at Power-Production and Water-Control Facilities`` was held in Portland, Oregon on December 12--13, 1995. This workshop convened a 22-member panel of international experts from universities, industry, and government to share knowledge, questions, and ideas about using sound for fish guidance. Discussions involved in a broad range of indigenous migratory and resident fish species and fish-protection issues in river systems, with particular focus on the Columbia River Basin. Because the use of sound behavioral barriers for fish is very much in its infancy, the workshop was designed to address the many questions being asked by fishery managers and researchers about the feasibility and potential benefits of using sound to augment physical barriers for fish protection in the Columbia River system.

  7. Integrated multi-trophic aquaculture (combined production of fish, mussels and seaweed)

    DEFF Research Database (Denmark)

    Holdt, Susan Løvstad; Silva Marinho, Goncalo; Angelidaki, Irini

    2014-01-01

    The Danish marine aquaculture has, despite the huge potential, only been slowly increasing the last 25 years because of the imposed limits to the nitrogen (N) released to the environment. Mussels, seaweed and other organisms have been successfully tested as biofilters in integrated multi-trophic ......The Danish marine aquaculture has, despite the huge potential, only been slowly increasing the last 25 years because of the imposed limits to the nitrogen (N) released to the environment. Mussels, seaweed and other organisms have been successfully tested as biofilters in integrated multi......, mineral and vitamin content and profiles were monitored to evaluate the nutritional value and harvest time of the seaweed biomass. Sugarkelp showed to be efficient for bioremediation of nitrogen, with environmental and potentially economic benefits (e.g. waste water management and for production...

  8. Plasma phospholipid pentadecanoic acid, EPA, and DHA, and the frequency of dairy and fish product intake in young children

    Directory of Open Access Journals (Sweden)

    Nicolai A. Lund-Blix

    2016-08-01

    Full Text Available Background: There is a lack of studies comparing dietary assessment methods with the biomarkers of fatty acids in children. Objective: The objective was to evaluate the suitability of a food frequency questionnaire (FFQ to rank young children according to their intake of dairy and fish products by comparing food frequency estimates to the plasma phospholipid fatty acids pentadecanoic acid, eicosapentaenoic acid (EPA, and docosahexaenoic acid (DHA. Design: Cross-sectional data for the present study were derived from the prospective cohort ‘Environmental Triggers of Type 1 Diabetes Study’. Infants were recruited from the Norwegian general population during 2001–2007. One hundred and ten (age 3–10 years children had sufficient volumes of plasma and FFQ filled in within 2 months from blood sampling and were included in this evaluation study. The quantitative determination of plasma phospholipid fatty acids was done by fatty acid methyl ester analysis. The association between the frequency of dairy and fish product intake and the plasma phospholipid fatty acids was assessed by a Spearman correlation analysis and by investigating whether participants were classified into the same quartiles of distribution. Results: Significant correlations were found between pentadecanoic acid and the intake frequency of total dairy products (r=0.29, total fat dairy products (r=0.39, and cheese products (r=0.36. EPA and DHA were significantly correlated with the intake frequency of oily fish (r=0.26 and 0.37, respectively and cod liver/fish oil supplements (r=0.47 for EPA and r=0.50 DHA. To a large extent, the FFQ was able to classify individuals into the same quartile as the relevant fatty acid biomarker. Conclusions: The present study suggests that, when using the plasma phospholipid fatty acids pentadecanoic acid, EPA, and DHA as biomarkers, the FFQ used in young children showed a moderate capability to rank the intake frequency of dairy products with a

  9. Environmental assessment after decommissioning at the North Sea- Froey oil production site: a field study with biomarkers in fish and invertebrates

    Energy Technology Data Exchange (ETDEWEB)

    Pinturier, Laurence; Beyer, Jonny; Moltu, Ulf; Plisson, Saune Stephan; Berland, Harald; Sundt, Rolf; Bjoernstad, Anne; Sanni, Steinar

    2006-03-15

    The Froey field is situated in the North Sea and was operated by Total Exploration and Production Norge. Oil production started in 1995 and ceased in 2001, when the wells were permanently plugged and abandoned. The jacket was removed in 2002, and in 2003 the first post-production sediment monitoring survey was carried out at the field as a part of the regional sediment environmental monitoring survey of Region II. In parallel to the sediment monitoring survey and cuttings survey, Total E and P Norge decided to conduct an environmental survey based on the use of biological effects parameters (or biomarkers) to document the environmental condition of the site after decommissioning. A series of pollutant responsive biomarkers was selected in order to answer the following questions: is the environmental condition in the bottom water at the Froey location significantly different to the background situation as measured in the reference station? And does the cutting deposit affect the nearby environment. Conclusion: This paper present a selection of the results obtained during an environmental survey carried out at a decommissioned field, the Froey field, by Total E and P Norge and RF-Akvamiljoe. Detailed results and discussion will be presented more extensively in a peer review publication by Beyer et al. (2005). The objective of the survey was to evaluate the environmental condition at the Froey site by comparing it to a background situation measured at a reference site. The environmental condition was assessed by measuring biological effects parameters in invertebrates and fish living in close connection with the sediments. The results of this survey indicate only a very local pollutant effect in the vicinity of the cuttings limited to the invertebrates living and feeding on the sediment. No signal effects were measured in the selected fish species known to swallow large quantity of sediment when feeding. These results corroborate well the ones obtained from the

  10. Reduced ex Vivo Interleukin-6 Production by Dietary Fish Oil Is Not Modified by Linoleic Acid Intake in Healthy Men

    DEFF Research Database (Denmark)

    Damsgaard, C. T.; Lauritzen, L.; Calder, P. C.

    2009-01-01

    production from cultures of whole blood, peripheral blood mononuclear cells (PBMC), and monocytes in healthy men. The study was a double-blinded, controlled, 2 X 2 factorial 8-wk intervention. Sixty-four healthy men were randomized to 5 mL/d FO or olive oil (00) provided in capsules and to spreads and oils......Fish oil (FO) is considered antiinflammatory, but evidence regarding its effect on human cytokine production is conflicting. High linoleic acid (LA) intake may impair any effects of FO. The aim of this study was to investigate how FO combined with high or low LA intake affected ex vivo cytokine...

  11. Monitoring habitat restoration projects: U.S. Fish and Wildlife Service Pacific Region Partners for Fish and Wildlife Program and Coastal Program Protocol

    Science.gov (United States)

    Woodward, Andrea; Hollar, Kathy

    2011-01-01

    The U.S. Fish and Wildlife Service's (FWS) Pacific Region (Region 1) includes more than 158 million acres (almost 247,000 square miles) of land base in Idaho, Oregon, Washington, Hawai`i, the Commonwealth of the Northern Mariana Islands, American Samoa, Guam, the Republic of Palau, the Federated States of Micronesia, and the Republic of the Marshall Islands. Region 1 is ecologically diverse with landscapes that range from coral reefs, broadleaf tropical forests, and tropical savannahs in the Pacific Islands, to glacial streams and lakes, lush old-growth rainforests, inland fjords, and coastal shoreline in the Pacific Northwest, to the forested mountains, shrub-steppe desert, and native grasslands in the Inland Northwest. Similarly, the people of the different landscapes perceive, value, and manage their natural resources in ways unique to their respective regions and cultures. The Partners for Fish and Wildlife Program (Partners Program) and Coastal Program work with a variety of partners in Region 1 including individual landowners, watershed councils, land trusts, Soil and Water Conservation Districts, non-governmental organizations, Tribal governments, Native Hawaiian organizations, and local, State, and Federal agencies. The Partners Program is the FWS's vanguard for working with private landowners to voluntarily restore and conserve fish and wildlife habitat. Using non-regulatory incentives, the Partners Program engages willing partners to conserve and protect valuable fish and wildlife habitat on their property and in their communities. This is accomplished by providing the funding support and technical and planning tools needed to make on-the-ground conservation affordable, feasible, and effective. The primary goals of the Pacific Region Partners Program are to: Promote citizen and community-based stewardship efforts for fish and wildlife conservation Contribute to the recovery of at-risk species, Protect the environmental integrity of the National Wildlife

  12. Parasites and diseases in marine copepods: Challenges for future mass-production of live feed for fish larva production

    DEFF Research Database (Denmark)

    Skovgaard, Alf

    Copepods are the natural food for many marine fish larvae, and the use of cultured copepods as life feed is, therefore, becoming increasingly important as more marine fish species are being produced in aquaculture. Large-scale cultivation of copepods may be challenged by diseases and parasites....... In nature, marine copepods are hosts for parasitic organisms of many different taxonomic groups, including e.g. dinoflagellates, ciliates, paramyxans, nematodes and even other crustaceans. In addition, several parasites of copepods have yet not been investigated in relation to their taxonomic affiliation...

  13. Comparison of nutritional quality in fish maw product of croaker Protonibea diacanthus and perch Lates niloticus

    Science.gov (United States)

    Wen, Jing; Zeng, Ling; Chen, Ziming; Xu, Youhou

    2016-08-01

    Fish maw (the dried swimbladders of fish) is ranked in the list of the four sea treasures in Chinese cuisine. Fish maw is mainly produced from croaker, which is the most highly priced. However, some of the fish maw being sold as croaker maw are in fact not from croaker, but from the Nile perch Lates niloticus. The present work determined and compared the proximate composition, amino acid and fatty acid composition of croaker Protonibea diacanthus maw and perch L. niloticus maw. The results indicated that both maws were high protein sources and low in fat content. The dominant amino acids in both maws were glycine, proline, glutamic acid, alanine and arginine. These amino acids constituted 66.2% and 66.4% of the total amino acids in P. diacanthus and L. niloticus, respectively. The ratio of FAA: TAA (functional amino acids: total amino acids) in both maws were 0.69. This is a good explanation for why fish maws have been widely utilized as a traditional tonic and remedy in Asia. Except valine and histidine, all the essential amino acid contents in P. diacanthus were higher than in L. niloticus. Moreover, croaker P. diacanthus maw contained more AA and DHA than perch L. niloticus maw, showing a higher ratio of n-3 / n-6, which is more desirable.

  14. Fish products and their trade in Tauric Chersonesos/Byzantine Cherson: the development of a traditional craft from Antiquity to the Middle Ages

    Czech Academy of Sciences Publication Activity Database

    Čechová, Martina

    2014-01-01

    Roč. 17, č. 1 (2014), s. 229-236. ISBN 978-2-87772-579-8. ISSN 2101-2849 Institutional support: RVO:68378017 Keywords : Tauric Chersonesos * fish products Subject RIV: AC - Archeology, Anthropology, Ethnology

  15. Use of Fish Telemetry in Rehabilitation Planning, Management, and Monitoring in Areas of Concern in the Laurentian Great Lakes

    Science.gov (United States)

    Brooks, J. L.; Boston, C.; Doka, S.; Gorsky, D.; Gustavson, K.; Hondorp, D.; Isermann, D.; Midwood, J. D.; Pratt, T. C.; Rous, A. M.; Withers, J. L.; Krueger, C. C.; Cooke, S. J.

    2017-12-01

    Freshwater ecosystems provide many ecosystem services; however, they are often degraded as a result of human activity. To address ecosystem degradation in the Laurentian Great Lakes, Canada and the United States of America established the Great Lakes Water Quality Agreement (GLWQA). In 1987, 43 highly polluted and impacted areas were identified under the GLWQA as having one or more of 14 Beneficial Use Impairments (BUIs) to the physical and chemical habitat for fish, wildlife and humans, and were designated as Areas of Concern (AOC). Subnational jurisdictions combined with local stakeholders, with support from federal governments, developed plans to remediate and restore these sites. Biotelemetry (the tracking of animals using electronic tags) provides information on the spatial ecology of fish in the wild relevant to habitat management and stock assessment. Here, seven case studies are presented where biotelemetry data were directly incorporated within the AOC Remedial Action Plan (RAP) process. Specific applications include determining seasonal fish-habitat associations to inform habitat restoration plans, identifying the distribution of pollutant-indicator species to identify exposure risk to contamination sources, informing the development of fish passage facilities to enable fish to access fragmented upstream habitats, and assessing fish use of created or restored habitats. With growing capacity for fish biotelemetry research in the Great Lakes, we discuss the strengths and weaknesses of incorporating biotelemetry into AOC RAP processes to improve the science and practice of restoration and to facilitate the delisting of AOCs.

  16. Environmental monitoring of the La Grande complex (2003-2004) : evolution of mercury levels in the flesh of fish

    International Nuclear Information System (INIS)

    Therrien, J.; Schetagne, R.

    2005-11-01

    The results of surveys conducted to assess the duration of temporary mercury levels in piscivorous species in the La Grande Complex were presented. A 2003 survey conducted in the easter sector and a 2004 survey conducted in the western sector of the complex showed that for non-piscivorous fishes of standardized length, a return to mean natural mercury levels will be achieved between 10 and 20 years after impounding. For piscivorous fishes, the evolution pattern of the mean mercury levels suggested that a return to background levels will occur after 20 to 30 years. Mercury levels for northern pike in the Robert-Bourassa Reservoir are expected to return to normal levels after 30 to 35 years. The surveys indicated that mean mercury levels in non-piscivorous fishes were often higher immediately below the La Grande generating stations. Similar observations were made for northern pike and lake trout downstream of the generating stations in the eastern sector of the complex. Mean mercury levels were significantly higher for fishes in the complex than fishes in the natural lakes of the region. Results of the surveys suggested that additional consumption restrictions for piscivorous fishes in the reservoirs are needed. Consumption guidelines for varieties of non-piscivorous and piscivorous fishes from the complex were included

  17. Impacts from Partial Removal of Decommissioned Oil and Gas Platforms on Fish Biomass and Production on the Remaining Platform Structure and Surrounding Shell Mounds.

    Science.gov (United States)

    Claisse, Jeremy T; Pondella, Daniel J; Love, Milton; Zahn, Laurel A; Williams, Chelsea M; Bull, Ann S

    2015-01-01

    When oil and gas platforms become obsolete they go through a decommissioning process. This may include partial removal (from the surface to 26 m depth) or complete removal of the platform structure. While complete removal would likely eliminate most of the existing fish biomass and associated secondary production, we find that the potential impacts of partial removal would likely be limited on all but one platform off the coast of California. On average 80% of fish biomass and 86% of secondary fish production would be retained after partial removal, with above 90% retention expected for both metrics on many platforms. Partial removal would likely result in the loss of fish biomass and production for species typically found residing in the shallow portions of the platform structure. However, these fishes generally represent a small proportion of the fishes associated with these platforms. More characteristic of platform fauna are the primarily deeper-dwelling rockfishes (genus Sebastes). "Shell mounds" are biogenic reefs that surround some of these platforms resulting from an accumulation of mollusk shells that have fallen from the shallow areas of the platforms mostly above the depth of partial removal. We found that shell mounds are moderately productive fish habitats, similar to or greater than natural rocky reefs in the region at comparable depths. The complexity and areal extent of these biogenic habitats, and the associated fish biomass and production, will likely be reduced after either partial or complete platform removal. Habitat augmentation by placing the partially removed platform superstructure or some other additional habitat enrichment material (e.g., rock boulders) on the seafloor adjacent to the base of partially removed platforms provides additional options to enhance fish production, potentially mitigating reductions in shell mound habitat.

  18. Impacts from Partial Removal of Decommissioned Oil and Gas Platforms on Fish Biomass and Production on the Remaining Platform Structure and Surrounding Shell Mounds.

    Directory of Open Access Journals (Sweden)

    Jeremy T Claisse

    Full Text Available When oil and gas platforms become obsolete they go through a decommissioning process. This may include partial removal (from the surface to 26 m depth or complete removal of the platform structure. While complete removal would likely eliminate most of the existing fish biomass and associated secondary production, we find that the potential impacts of partial removal would likely be limited on all but one platform off the coast of California. On average 80% of fish biomass and 86% of secondary fish production would be retained after partial removal, with above 90% retention expected for both metrics on many platforms. Partial removal would likely result in the loss of fish biomass and production for species typically found residing in the shallow portions of the platform structure. However, these fishes generally represent a small proportion of the fishes associated with these platforms. More characteristic of platform fauna are the primarily deeper-dwelling rockfishes (genus Sebastes. "Shell mounds" are biogenic reefs that surround some of these platforms resulting from an accumulation of mollusk shells that have fallen from the shallow areas of the platforms mostly above the depth of partial removal. We found that shell mounds are moderately productive fish habitats, similar to or greater than natural rocky reefs in the region at comparable depths. The complexity and areal extent of these biogenic habitats, and the associated fish biomass and production, will likely be reduced after either partial or complete platform removal. Habitat augmentation by placing the partially removed platform superstructure or some other additional habitat enrichment material (e.g., rock boulders on the seafloor adjacent to the base of partially removed platforms provides additional options to enhance fish production, potentially mitigating reductions in shell mound habitat.

  19. Fortification of Sardine Fish Oil from By-product of Canning Processing into Beef Meatball and Chicken Nugget

    Directory of Open Access Journals (Sweden)

    Teti Estiasih

    2017-04-01

    Full Text Available One source of ω-3 fatty acids is a by-product of lemuru canning processing that can be used for fortification.  Generally, fortification uses fish oil microcapsule but it is more expensive than direct fortification.  In this study, fish oil from a by-product of lemuru canning processing was directly fortified into beef meatball and chicken nugget at concentration of 0, 2, 4, and 6% (w/w.  Oxidation level, free fatty acid content, colour, lightness, texture, and sensory acceptance by triangle difference test were analyzed. The results showed that oxidation level of nugget was higher than meatball.  Free fatty acid content increased in nugget by increasing fortification level, but it was decrease in meatball. Texture of both was relatively unchanged, with a tendency to increase in nugget and decrease in meatball. Lightness (L of meatball surface was higher than nugget surface. Lightness did not significantly change by increasing fortification level. Redness (+a and yellowness (+b of meatball and nugget changed significantly by fortification. Difference test showed that fortification level of 2% was the highest level of fortification that taste and odor could not be distinguished with control by panelists. Best level of fish oil fortification was 2%. At 2% fortification, EPA was 2.85% for meatball, and 2.22% for nugget.  Sharp decline was occured in EPA and the decrease washigher in nugget than meatball.

  20. Baseline levels of melamine in food items sold in Canada. II. Egg, soy, vegetable, fish and shrimp products.

    Science.gov (United States)

    Tittlemier, Sheryl A; Lau, Benjamin P-Y; Ménard, Cathie; Corrigan, Catherine; Sparling, Melissa; Gaertner, Dean; Cao, Xu-Liang; Dabeka, Bob; Hilts, Carla

    2010-01-01

    A variety of egg-containing, soy-based, fish, shrimp and vegetable products sold in Canada were analysed for melamine (MEL) using a sensitive solid-phase extraction LC-MS/MS analytical method. MEL was detected above the method quantification limit of 0.004 mg/kg in 98 of the 378 samples analysed. Concentrations in the various food product groups ranged 0.00507-0.247 mg/kg (egg-containing items), 0.00408-0.0479 mg/kg (soy-based meat substitutes), 0.00409-1.10 mg/kg (fish and shrimp products), and 0.00464-0.688 mg/kg (vegetable products). MEL was detected less frequently in egg- and soy-containing products. The presence of MEL in most of the Canadian Total Diet Study shrimp composites collected after 2001 suggested the residues in shrimp were caused by a relatively recent exposure to MEL. All concentrations of MEL reported were lower than the 2.5 mg/kg interim standard established for MEL in items containing milk and milk-derived ingredients and the respective maximum residue limits for cyromazine and its metabolite, melamine, in vegetables set by the Canadian Government (2009; http://www.hc-sc.gc.ca/fn-an/securit/chem-chim/melamine/qa-melamine-qr-eng.php#8 ). The consumption of foods containing these low levels of MEL does not constitute a health risk for consumers.

  1. Occurrence of pharmaceuticals and personal care products in fish: results of a national pilot study in the United States.

    Science.gov (United States)

    Ramirez, Alejandro J; Brain, Richard A; Usenko, Sascha; Mottaleb, Mohammad A; O'Donnell, John G; Stahl, Leanne L; Wathen, John B; Snyder, Blaine D; Pitt, Jennifer L; Perez-Hurtado, Pilar; Dobbins, Laura L; Brooks, Bryan W; Chambliss, C Kevin

    2009-12-01

    Pharmaceuticals and personal care products are being increasingly reported in a variety of biological matrices, including fish tissue; however, screening studies have presently not encompassed broad geographical areas. A national pilot study was initiated in the United States to assess the accumulation of pharmaceuticals and personal care products in fish sampled from five effluent-dominated rivers that receive direct discharge from wastewater treatment facilities in Chicago, Illinois; Dallas, Texas; Orlando, Florida; Phoenix, Arizona; and West Chester, Pennsylvania, USA. Fish were also collected from the Gila River, New Mexico, USA, as a reference condition expected to be minimally impacted by anthropogenic influence. High performance liquid chromatography-tandem mass spectrometry analysis of pharmaceuticals revealed the presence of norfluoxetine, sertraline, diphenhydramine, diltiazem, and carbamazepine at nanogram-per-gram concentrations in fillet composites from effluent-dominated sampling locations; the additional presence of fluoxetine and gemfibrozil was confirmed in liver tissue. Sertraline was detected at concentrations as high as 19 and 545 ng/g in fillet and liver tissue, respectively. Gas chromatography-tandem mass spectrometry analysis of personal care products in fillet composites revealed the presence of galaxolide and tonalide at maximum concentrations of 2,100 and 290 ng/g, respectively, and trace levels of triclosan. In general, more pharmaceuticals were detected at higher concentrations and with greater frequency in liver than in fillet tissues. Higher lipid content in liver tissue could not account for this discrepancy as no significant positive correlations were found between accumulated pharmaceutical concentrations and lipid content for either tissue type from any sampling site. In contrast, accumulation of the personal care products galaxolide and tonalide was significantly related to lipid content. Results suggest that the detection of

  2. Innovation on Street Food Products (Instant Porridge and Cookies Based on Fortified Patin Fish Protein Concentrate with Red Palm Oil and Encaptulated Oil Fish

    Directory of Open Access Journals (Sweden)

    Dewita

    2016-02-01

    Full Text Available This research aimed to establish innovation on street food (instant porridge and cookies from Patin Fish Protein Concentrate fortified by blending red palm oil and encaptulated patin fish’s oil. The Encaptulation was conducted by blending of red palm oil and patin fish’s oil using spray dryer. The blending was consisted of three combinations namely 50 : 50 (A1, 40 : 60 (A2 and 60 : 40 (A3 for ratio between red palm oil and patin fish’s oil. The best combination’s results was fortified into street food (instant porridge and cookies. The blending was tested by measure yield, fat and fatty acid profile. Moreover, organoleptics and proximate tests were carrie out for the best treatment of blending in instant porridge and cookies. The results show that encaptulated yield reached 55 % that rise from A1 treatment as the best treatment with fat content of 17.26%. Profile of unsaturated fatty acid especially fatty acid omega 9 from blending fish oil and palm oil was 59.29%. The number of fatty acid omega 9 was higher than saturated fatty acid which was 18.56%. Furthermore, based on organoleptic tests of instant porridge and cookies using under five year children respondents, it was proven that 93% of children was like the products. Proximateanalysis of instant porridge revealed that protein content was 11.04 %, water content was 5.03%, fat content was 1.92 % and ash was 0.64 %. However, proximate analysis showed that cookies owned protein of 9.11%, fat of 17.03% , water content was 3.93% and ash of 1.38%.

  3. FTIR microspectroscopy for rapid screening and monitoring of polyunsaturated fatty acid production in commercially valuable marine yeasts and protists.

    Science.gov (United States)

    Vongsvivut, Jitraporn; Heraud, Philip; Gupta, Adarsha; Puri, Munish; McNaughton, Don; Barrow, Colin J

    2013-10-21

    The increase in polyunsaturated fatty acid (PUFA) consumption has prompted research into alternative resources other than fish oil. In this study, a new approach based on focal-plane-array Fourier transform infrared (FPA-FTIR) microspectroscopy and multivariate data analysis was developed for the characterisation of some marine microorganisms. Cell and lipid compositions in lipid-rich marine yeasts collected from the Australian coast were characterised in comparison to a commercially available PUFA-producing marine fungoid protist, thraustochytrid. Multivariate classification methods provided good discriminative accuracy evidenced from (i) separation of the yeasts from thraustochytrids and distinct spectral clusters among the yeasts that conformed well to their biological identities, and (ii) correct classification of yeasts from a totally independent set using cross-validation testing. The findings further indicated additional capability of the developed FPA-FTIR methodology, when combined with partial least squares regression (PLSR) analysis, for rapid monitoring of lipid production in one of the yeasts during the growth period, which was achieved at a high accuracy compared to the results obtained from the traditional lipid analysis based on gas chromatography. The developed FTIR-based approach when coupled to programmable withdrawal devices and a cytocentrifugation module would have strong potential as a novel online monitoring technology suited for bioprocessing applications and large-scale production.

  4. Optimization of diacylglycerol production by glycerolysis of fish oil catalyzed by Lipozyme TL IM with Tween 65.

    Science.gov (United States)

    Monte Blanco, S F M; Santos, J S; Feltes, M M C; Dors, G; Licodiedoff, S; Lerin, L A; de Oliveira, D; Ninow, J L; Furigo, A

    2015-12-01

    The diacylglycerols (DAG) are emulsifiers with high added value used as functional additives in food, medicine, and cosmetic industries. In glycerolysis of oils for the production of DAG, the immiscibility between the substrates (glycerol and oil phases) has to be overcome, for example, by the addition of a food grade surfactant like Tween 65. The main objective of this work was to optimize the process conditions for obtaining diacylglycerols rich in the omega-3 eicosapentaenoic (EPA) and docosahexaenoic (DHA) acids, through the enzymatic glycerolysis of fish oil, in systems with Tween 65 and without this surfactant, using Lipozyme TL(®) IM as biocatalyst. The experiments were performed according to predetermined conditions varying the temperature, enzyme load, the oil to glycerol molar ratio and, when added, the surfactant load. After 6 h of reaction, it was possible to produce up to 20.76 and 13.76% of diacylglycerols from fish oil in the reactions with and without Tween 65, respectively.

  5. Laminaria digitata as potential carbon source in heterotrophic microalgae cultivation for the production of fish feed supplement

    DEFF Research Database (Denmark)

    D'Este, Martina; Alvarado-Morales, Merlin; Angelidaki, Irini

    2017-01-01

    A novel concept using the macroalgae Laminaria digitata as substrate to grow heterotrophically microalgae species to be used as fish feed supplement is investigated in the present study. Enzymatic hydrolysis of the macroalgae was performed to release the sugars present in the biomass. The hydroly......A novel concept using the macroalgae Laminaria digitata as substrate to grow heterotrophically microalgae species to be used as fish feed supplement is investigated in the present study. Enzymatic hydrolysis of the macroalgae was performed to release the sugars present in the biomass...... was selected for further cultivation in batch reactors and its protein content and amino acid composition were measured. At the end of the process the biomass production reached 10.68 ± 1.33 g L− 1with a total protein accumulation of 41.77 ± 1.82% (dry weight basis) and a protein yield of 0.17 ± 0.06. Moreover...

  6. Effect of the partial replacement of fish meal and oil by vegetable products on performance and quality traits of juvenile shi drum (Umbrina cirrosa L.

    Directory of Open Access Journals (Sweden)

    Igino Andrighetto

    2010-01-01

    Full Text Available A four-month growth trial was carried out in order to evaluate performance and quality traits of juvenile shi drum fedwith two isonitrogenous and isoenergetic diets having different amounts of vegetable products (Vegetable diet vs. Controldiet. Compared to the Control diet, the Vegetable diet was formulated by increasing the replacement of fish meal (14%with soybean and cereal products, and fish oil (12% with a mixture of vegetable oil. On June, 4 groups of 225 fish (2replicates per dietary treatment were sorted according to live weight and reared in fibreglass tanks over a four- monthlong experimental period. Fish were hand fed to apparent satiety. Offered feed, growth parameters and feed efficiencywere recorded as productive performance. At the end of the trial (October biometric, chemical and reological traits wereexamined to assess fish quality. The dietary treatments showed similar productive performance. The relatively high inclusionof vegetable sources led to a significant modification of body shape, mesenteric fat and viscera weight. Among qualitytraits, Vegetable diet-fed fish demonstrated a significantly lower whole body and fillet crude protein content.Yellowness value of the cooked fillet was significantly lower in the Control diet-fed fish, whereas fillet texture was similar.The results of this research showed that shi drum is a suitable candidate for Mediterranean marine aquaculture andits dietary formulation might include at least the amount of vegetable sources used in this trial.

  7. Smartfactory, a modular, low cost productivity monitoring system

    CSIR Research Space (South Africa)

    Bosscha, PA

    2010-07-01

    Full Text Available lack of objectivity and plain incorrect data entries. In aid of the SMMEs the Smartfactory system offers a low-cost modular monitoring solution capable of implementation in a step by step fashion with little training required in installation...

  8. THE EFFECT OF F/M RATIO TO THE ANAEROBIC DECOMPOSITION OF BIOGAS PRODUCTION FROM FISH OFFAL WASTE

    Directory of Open Access Journals (Sweden)

    Agus Hadiyarto

    2016-01-01

    Full Text Available Biogas is a gas produced from the anaerobic decomposition of organic compounds. In the production of biogas from anaerobic digestion, value of F/M ratio shows a ratio between the mass of food available in the waste substrate with a mass of microorganisms that act as decomposers. F/M ratio is too small causing microbes could not metabolize perfectly and vice versa on the value of the ratio F / M overload resulting metabolic imbalance. The purpose of this study was to assess the effect of F/M ratio to optimal production of biogas from fish offal waste. The process of anaerobic digestion is conducted in the biodigester with four-liter volume and batch system operated at ambient temperature for 38 days. As a raw material, fish offal and microbial sludge obtained from the curing of fish and river mud discharges in the region of Bandarharjo, Semarang, Central Java. F/M ratio is set at 0.2, 0.4, and 0.6 are derived from sewage sludge VSS weight ratio of fish offal with sludge containing microbes. The addition of micronutrients supplied with a concentration of 0.4 mg/liter. Yield maximum methane gas obtained was 164,7 l/kg CODMn when the ratio F/M was 0.2. Based on the results of the study, found that the ratio F/M affect the amount of biogas produced. Meanwhile, the retention time (HRT is only influenced by the ratio F/M.

  9. Disinfestation studies on dried fish of Bangladesh. Part of a coordinated programme on radiation preservation of Asian fish and fishery products

    International Nuclear Information System (INIS)

    Ahmed, M.

    1978-07-01

    A survey of major fish drying areas, storage facilities and dried fish markets in Bangladesh showed that blow fly, house fly and fruit flies are destructive insects infesting fish during the process of drying. Dermestes maculatus, Necrobia rupifes and earwigs were the most predominant insects infesting dried fish during storage. The effect of irradiation on different developmental stages of D. maculatus was investigated. Results on radiation disinfestation of D. maculatus, the most serious pest during storage, showed that a dose of 30 krad and above would be sufficient to control infestation of dried fish. No changes on organoleptic properties of dried mackerel irradiated with doses up to 400 krad could be detected. Polyethylene bags with a thickness of 0.075 mm and above appeared to be suitable for packaging of dried fish

  10. Coeur d'Alene Tribe Fish, Water and Wildlife Program : Coeur d'Alene Tribe Trout Production Facility Master Plan.

    Energy Technology Data Exchange (ETDEWEB)

    Peters, Ronald L.; Woodward-Lilengreen, Kelly L.; Vitale, Angelo J.

    1999-09-01

    The Northwest Power Planning Council (Council) receives and reviews proposals to mitigate for fish and wildlife losses and refers approved measures to Bonneville Power Administration (BPA) for funding. The Northwest Power Act (Act) calls on the Council to include measures in its Columbia River Basin Fish and Wildlife Program (Program) to address system-wide fish and wildlife losses. The Act further states that the Council may include in its Program measures that provide off-site mitigation--mitigation physically removed from the hydro project(s) that caused the need to mitigate. The Program includes a goal ''to recover and preserve the health of native resident fish injured by the hydropower system, where feasible, and, where appropriate, to use resident fish to mitigate for anadromous fish losses in the system.'' Among those recommended measures are off-site mitigation for losses of anadromous fisheries including the measure under analysis in this Coeur d'Alene Tribe Trout Production Facility Master Plan, proposed by the Coeur d'Alene Tribe. To meet the need for off-site mitigation for anadromous fish losses in the Columbia River Basin in a manner consistent with the objectives of the Council's Fish and Wildlife Program, the Coeur d'Alene Tribe is proposing that the BPA fund the design, construction, operations and maintenance of a trout production facility on the Coeur d'Alene Indian Reservation. Measures for establishing a Coeur d'Alene fish production facility have been a part of the Council's Program since 1987. The Coeur d'Alene Tribe Trout Production Facility is intended to rear and release westslope cutthroat trout into rivers and streams with the express purpose of increasing the numbers of fish spawning, incubating and rearin