Download or read book Dietary effects on the fatty acid signature of whole Atlantic cod Gadus morhua written by P.E. KIRSCH and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atlantic Cod written by George A. Rose and published by John Wiley & Sons. This book was released on 2018-12-13 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive handbook, covering all aspects of the Atlantic cod including the biology, ecology, life histories, behaviour, commercial exploitation and conservation Not only is Atlantic cod one of the most valuable food fish in the world’s oceans, it is an important component of North Atlantic ecosystems and has been subject to much research into its biology, ecology and exploitation. After hundreds of years of exploitation, overfishing in the last half of the 20th Century caused many stocks to collapse, most famously the Northern cod stock off Newfoundland and Labrador, Canada. Since then, most cod stocks have been better researched and managed, but remain in a variety of states, from fully recovered to continued decline. This book, written by world experts, describes that research and management, and the importance of cod and its fisheries on North Atlantic cultures and economies, with impacts well beyond the range of the species. Atlantic Cod: Bio-Ecology of the Fish offers insightful chapter coverage of cod nomenclature, taxonomy, phylogeny and morphology; physiology and ecophysiology; reproduction and spawning behavior; early life history and pre-recruitment processes; migrations, movements and stock identity; feeding, growth and energetics; the place of cod in the ecosystem; the exploitation of cod through history and present day commercial fisheries and precautionary management for sustainable fisheries; impacts of climate change on cod biology and ecology; and the future of the species and its fisheries. Discusses the major commercial importance of Atlantic cod through history Provides a comprehensive treatment of the bio-ecology of the most researched and highly exploited fully marine species Examines how the decline (and recovery) of cod stocks is of great political and scientific interest An essential purchase for marine fisheries scientists Atlantic Cod: Bio-Ecology of the Fish is a vital book for all fisheries scientists, managers and fish biologists.
Download or read book Culture of Cold Water Marine Fish written by Erlend Moksness and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the continuing decline of commercial stocks of wild-caught fish, the interest in the culture of cold-water marine fish is rapidly growing, with much ongoing research into the development of this area. This important and timely book reviews the current and potential future situation concerning the major exploited marine fish species, such as cod, haddock, hake, wolf-fish, halibut, turbot and sole. The editors of Culture of Cold-Water Marine Fish have drawn together and carefully edited chapters from a wide range of international scientists. The contents list includes detailed reviews of abiotic factors, microbial interactions, prophylaxis and disease, live food and first feeding technologies, brood stock and egg production, functional development, weaning and nursery, on-growing to market size, status and perspectives for the species covered, stock enhancement and sea ranching, and an analysis of the finances, economics and markets for the fish species used in marine aquaculture. Culture of Cold-Water Marine Fish is an essential purchase for personnel involved in marine aquaculture, whether managing fish farms, supplying equipment and feed to the industry, or researching, studying or teaching the subject. Marine biologists, fisheries scientists, fish biologists, ecologists and environmental scientists will all find much of use and interest in this timely book. Libraries in all universities and research establishments where these subjects are studied and taught should have copies.
Download or read book Stock Identification Methods written by Lisa A. Kerr and published by Elsevier. This book was released on 2004-10-15 with total page 735 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stock Identification Methods provides a comprehensive review of the various disciplines used to study the population structure of fishery resources. It represents the worldwide experience and perspectives of experts on each method, assembled through a working group of the International Council for the Exploration of the Sea. The book is organized to foster interdisciplinary analyses and conclusions about stock structure, a crucial topic for fishery science and management. Technological advances have promoted the development of stock identification methods in many directions, resulting in a confusing variety of approaches. Based on central tenets of population biology and management needs, Stock Identification Methods offers a unified framework for understanding stock structure by promoting an understanding of the relative merits and sensitivities of each approach.* Describes eighteen distinct approaches to stock identification grouped into sections on life history traits, environmental signals, genetic analyses, and applied marks* Features experts' reviews of benchmark case studies, general protocols, and the strengths and weaknesses of each identification method* Reviews statistical techniques for exploring stock patterns, testing for differences among putative stocks, stock discrimination, and stock composition analysis* Focuses on the challenges of interpreting data and managing mixed-stock fisheries
Download or read book Atlantic Cod Gadus Morhua L Broodstock Nutrition written by Jarin Sawanboonchun and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Cod hatcheries rely greatly on wild-caught broodstock as egg quality from farm-reared broodstock tends to be poor. Broodstock diet and levels of essential fatty acids have been linked to fecundity and egg quality in cod. Arachidonic acid (ARA) and astaxanthin (Ax) are important nutrients linked to fish egg quality and differences in levels have ben found between eggs from wild and farmed cod. The aim of this thesis was to investigate the impact of dietary supplementation with ARA and Ax on fecundity and egg quality in cod. The first experiment investigated the effect of feeding a diet supplemented with ARA, for 1, 2 or 3 months prior to peak spawning. Results showed that supplementation increased ARA in eggs and that Groups fed the supplement had improved fecundity and egg quality (though with no correlation between the duration of supplementation and number/quality of eggs). The second experiment investigated the effect of supplementation of Ax in broodstock diets on egg quality in farmed cod and showed that Ax was taken up into eggs and that fish fed supplemented diet had improved fecundity and egg quality. The third experiment compared the effect of diet supplementation with ARA and Ax on egg quality in wild and farmed cod and showed that despite the dietary supplementation, wild origin fish performed better on a number of egg quality and fecundity indices. However, it was not possible to take the greater ages and spawning experience of the wild broodstock into account, which may have influenced the results. The fourth experiment measured lipid and fatty acid profiles of eggs from two UK cod hatcheries. Variation was found between farms and across seasons. Results showed that supplementation of cod broodstock diet with ARA and Ax had a positive impact on egg quality and fecundity, although effects were not consistent across all egg quality parameters.
Download or read book Oceanography and Marine Biology An Annual Review Volume 41 written by R. N. Gibson and published by CRC Press. This book was released on 2003-07-31 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interest in oceanography and marine biology and its relevance to global environmental issues continues to increase, creating a demand for authoritative reviews that summarize recent research. Oceanography and Marine Biology: An Annual Review has catered to this demand since its foundation, by the late Harold Barnes, more than 40 years ago. It is an
Download or read book Fatty Acid Signatures as Indicators of Foraging Ecology of Northern Elephant Seals Mirounga Angustirostris written by Jill Doneen Pettinger and published by . This book was released on 2000 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Journal of Fisheries and Aquatic Sciences written by and published by . This book was released on 2005 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lipids in Aquatic Ecosystems written by Michael T. Arts and published by Springer Science & Business Media. This book was released on 2009-06-12 with total page 395 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evidence now suggests that the roles of essential fatty acids as growth promoters and as indices of health and nutrition are fundamentally similar in freshwater and marine ecosystems. Lipids in Aquatic Ecosystems integrates this divergent literature into a coordinated, digestible form. Chapters are organized so as to discuss and synthesize the flow of lipids from lower to higher trophic levels, up to and including humans. Linkages between the production, distribution and pathways of these essential compounds within the various levels of the aquatic food webs, and their ultimate uptake by humans and other terrestrial organisms, are highlighted throughout the book. This book will be of interest to researchers and resource managers working with aquatic ecosystems.
Download or read book Responsible Fisheries in the Marine Ecosystem written by Michael Sinclair and published by CABI. This book was released on 2003 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses ecological and environmental issues associated with responsible and sustainable marine fisheries. It includes 22 chapters and has been developed from the Conference on Responsible Fisheries in the Marine Ecosystem held in Iceland in October 2001. Contents include: a global overview of marine capture fisheries; legal protection for marine ecosystems; dynamics of marine ecosystems; the role of man in marine ecosystems; and incorporating ecosystem considerations in fisheries management. The book has a subject index.
Download or read book Trophic Ecology written by James E. Garvey and published by CRC Press. This book was released on 2016-09-19 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a bridge between ecological paradigms – organismal/community approaches to food web dynamics and ecosystem-level approaches to production. The unification of organismal, community, and ecosystem approaches in ecology is emerging due to the growing availability of new techniques for assessing trophic interactions and their implications for ecosystems. Trophic Ecology is a formal text for both newcomers to the discipline as well as seasoned professionals looking for new ideas and refreshers on old topics. A wide range of topics are explained including autotrophy, heterotrophy, omnivory, decomposition, foraging behavior and theory, trophic cascades, bioenergetics, and production. The audience is upper-level undergraduate students and entry-level graduate students interested in autecological, organismal approaches to ecology, community and ecosystem ecology. It is also a reference text for instructors teaching upper-division courses, providing examples from the literature, quantitative approaches to teach, and new hypotheses yet to be fully tested by ecologists.
Download or read book Journal of the Marine Research Institute Reykjavik written by Háskóli Íslands. Atvinnudeild and published by . This book was released on 1999 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analyzing Ecological Data written by Alain Zuur and published by Springer. This book was released on 2007-08-29 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a practical introduction to analyzing ecological data using real data sets. The first part gives a largely non-mathematical introduction to data exploration, univariate methods (including GAM and mixed modeling techniques), multivariate analysis, time series analysis, and spatial statistics. The second part provides 17 case studies. The case studies include topics ranging from terrestrial ecology to marine biology and can be used as a template for a reader’s own data analysis. Data from all case studies are available from www.highstat.com. Guidance on software is provided in the book.
Download or read book Bioactive Fatty Acids as Dietary Supplements for Farmed Fish written by Sean Robert Kennedy and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Current feed formulations within the aquaculture industry have tended to rely on high dietary lipid thus offsetting relatively expensive protein as a source of energy. In thisway, protein can be?spared? for synthesis of new tissue and the high lipid content can also fulfil both fish and consumer essential fatty acid (EFA) requirements. However, the main disadvantage of feeding high lipid levels to farmed fish is a surplus of fat deposition in the flesh and other important tissues, which can detrimentally impact on quality characteristics central to the human consumer. However, based on previous work in other animal models, it is entirely feasible that supplementation of the diet with bioactive fatty acids such as conjugated linoleic acid (CLA) and tetradecylthioacetic acid (TTA) may mitigate the deleterious effects of feeding farmed fish high fat diets by reducing fat deposition in particular. The general objective of this research work was to test the hypothesis that CLA and/or TTA could augment growth, reduce fat deposition and enhance fatty acid composition via incorporation of these bioactive fatty acids, and increase n-3 highly unsaturated fatty acid (HUFA) levels in the flesh of commercially important fish species such as Atlantic salmon (Salmo salar), Atlantic cod (Gadus morhua L.) and rainbow trout (Oncorhynchus mykiss). This project also considered the influence of CLA and TTA on enzymes and transcription factors thought to be pivotal in lipid metabolism and fatty acid oxidation in particular. A subsidiary aim of this research work was to investigate the immunological impact of dietary CLA and TTA administration in these fish. The results of this project have revealed that the hypothesis was only partly proved. There was no effect in growth or biometry after either CLA or TTA supplementation in any of the fish species investigated. Additionally, there were few physiologically significant effects on fat levels on fish as a result of TTA or CLA administration. However, there were a number of effects on fatty acid metabolism including inhibition of steroyl coenzyme desaturase (SCD) in cod and trout in particular and also enhancement of hepatic n-3 HUFA levels in trout. Importantly, it was determined that both TTA and CLA could be incorporated into the flesh thus providing a vehicle through which these bioactive fatty acids can be delivered to the consumer. There were also a number of beneficial effects on activity and gene expression of a number of enzymes and transcription factors thought to be fundamental to the modulation of fatty acid oxidation in particular. However, the effects on gene transcription and biochemistry had little impact at the whole body level. This research work also showed that there were no detrimental effects on immune status after supplementation with dietary CLA or TTA. Conclusively, this thesis has contributed to the overall understanding of the influence of dietary CLA and TTA in farmed fish.
Download or read book Advances in Marine Biology written by and published by Elsevier. This book was released on 2003-10-03 with total page 365 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new volume of Advances in Marine Biology contains reviews on a wide range of important subjects such as: Benthic foraminifera (Protista) and Deep-Water Palaeoceanography; Breeding Biology of the Intertidal Sand Crab Emerita (Decapoda, Anomura); Coral Bleaching and Fatty acid trophic markers in the marine environment. Advances in Marine Biology has been providing in-depth and up-to-date reviews on all aspects of Marine Biology since 1963 -- over 40 years of outstanding coverage! The series is well-known for both its the excellence of its reviews as well as the strength of its thematic volumes devoted to a particular field in detail, such as 'The Biochemical Ecology of Marine Fishes' and 'Molluscan Radiation'. - Series Encompasses 40 Years of Coverage - Up-to-date Reviews on Wide-Ranging Topics
Download or read book Canadian Journal of Zoology written by and published by . This book was released on 2004 with total page 756 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lipid Nutrition in Haddock Melanogrammus Aeglefinus and Atlantic Cod Gadus Morhua written by Carla M. Walbourne and published by . This book was released on 2008 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
