Comparing Molecular Methods To Estimate Fish Stomach Contents And Gastric Evacuation Rates

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Comparing Molecular Methods to Estimate Fish Stomach Contents and Gastric Evacuation Rates

Author : Cory M. Dick
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (134 download)

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Book Synopsis Comparing Molecular Methods to Estimate Fish Stomach Contents and Gastric Evacuation Rates by : Cory M. Dick

Download or read book Comparing Molecular Methods to Estimate Fish Stomach Contents and Gastric Evacuation Rates written by Cory M. Dick and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Juvenile Chinook Salmon (Oncorhynchus tshawytscha) migrating through the Sacramento – San Joaquin Delta (the Delta) in central California have higher mortality rates than salmonids migrating through other west coast estuaries. Some hypotheses for high mortality rates include entrainment into water export facilities, physical alterations of the river system, and predation. Of these factors, predation is considered the least understood but may have the largest impact. Predation from large populations of non-native piscivorous fishes in the Delta is believed to effect abundances of Central Valley Chinook salmon, however sufficient data supporting this hypothesis is scarce. In this study, I investigate the possibility of using three molecular methods (qPCR, metabarcoding, SNP) to improve fish diet analyses by measuring the gastric evacuation of Chinook salmon in the stomachs of two common Delta predators, largemouth bass (Micropterus salmoides) and channel catfish (Ictalurus punctatus). Before molecular analysis can occur using field samples, it is important to conduct laboratory feed trials to determine how factors affect gastric evacuation and the detectability of DNA within predator digestion systems. My experiment was conducted to determine gastric evacuation of Chinook DNA and visual decay of organic tissue within the digestive tracts of two common piscivores in the Delta at different temperatures (15.5 ̊C and 18.5 ̊C) and feed ratios (predator weight: prey weight). Results from metabarcoding and qPCR analysis indicate greater detection ability and longer durations of digestion at higher feed ratios and decreased temperature. Temperature and ratio effect was species dependent with a larger effect on evacuation within channel catfish compared to largemouth bass. Channel catfish also had slower digestion rates, indicating lower metabolism and a longer duration of DNA detection. Lastly, visual degradation of prey tissue followed a highly correlated decay pattern to metabarcoding read count and qPCR copy number over time. Gastric evacuation results from this study can provide information for future models on the effect of species, time, temperature, and feed ratio on digestion rate needed to predict population level predation occurring on native salmonids.

Some factors affecting gastric evacuation rates in fishes

Author : Ann G. Durbin
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (831 download)

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Book Synopsis Some factors affecting gastric evacuation rates in fishes by : Ann G. Durbin

Download or read book Some factors affecting gastric evacuation rates in fishes written by Ann G. Durbin and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Estimating the Average Food Consumption by Fish in the Field from Stomach Contents Data

Author :
Publisher :
ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (143 download)

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Download or read book Estimating the Average Food Consumption by Fish in the Field from Stomach Contents Data written by and published by . This book was released on 1985 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Nutrient Requirements of Fish and Shrimp

Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309216192
Total Pages : 810 pages
Book Rating : 4.3/5 (92 download)

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Book Synopsis Nutrient Requirements of Fish and Shrimp by : National Research Council

Download or read book Nutrient Requirements of Fish and Shrimp written by National Research Council and published by National Academies Press. This book was released on 2011-05-25 with total page 810 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aquaculture now supplies half of the seafood and fisheries products consumed worldwide and is gaining international significance as a source of food and income. Future demands for seafood and fisheries products can only be met by expanded aquaculture production. Such production will likely become more intensive and will depend increasingly on nutritious and efficient aquaculture feeds containing ingredients from sustainable sources. To meet this challenge, Nutrient Requirements of Fish and Shrimp provides a comprehensive summary of current knowledge about nutrient requirements of fish and shrimp and supporting nutritional science. This edition incorporates new material and significant updates to information in the 1993 edition. It also examines the practical aspects of feeding of fish and shrimp. Nutrient Requirements of Fish and Shrimp will be a key resource for everyone involved in aquaculture and for others responsible for the feeding and care of fish and shrimp. It will also aid scientists in developing new and improved approaches to satisfy the demands of the growing aquaculture industry.

Biological Oceanography

Author : Charles B. Miller
Publisher : John Wiley & Sons
ISBN 13 : 144433302X
Total Pages : 508 pages
Book Rating : 4.4/5 (443 download)

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Book Synopsis Biological Oceanography by : Charles B. Miller

Download or read book Biological Oceanography written by Charles B. Miller and published by John Wiley & Sons. This book was released on 2012-05-21 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition of Biological Oceanography has been greatly updated and expanded since its initial publication in 2004. It presents current understanding of ocean ecology emphasizing the character of marine organisms from viruses to fish and worms, together with their significance to their habitats and to each other. The book initially emphasizes pelagic organisms and processes, but benthos, hydrothermal vents, climate-change effects, and fisheries all receive attention. The chapter on oceanic biomes has been greatly expanded and a new chapter reviewing approaches to pelagic food webs has been added. Throughout, the book has been revised to account for recent advances in this rapidly changing field. The increased importance of molecular genetic data across the field is evident in most of the chapters. As with the previous edition, the book is primarily written for senior undergraduate and graduate students of ocean ecology and professional marine ecologists. Visit www.wiley.com/go/miller/oceanography to access the artwork from the book.

Treatise on Estuarine and Coastal Science

Author :
Publisher : Academic Press
ISBN 13 : 0080878857
Total Pages : 4604 pages
Book Rating : 4.0/5 (88 download)

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Download or read book Treatise on Estuarine and Coastal Science written by and published by Academic Press. This book was released on 2012-03-06 with total page 4604 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of estuaries and coasts has seen enormous growth in recent years, since changes in these areas have a large effect on the food chain, as well as on the physics and chemistry of the ocean. As the coasts and river banks around the world become more densely populated, the pressure on these ecosystems intensifies, putting a new focus on environmental, socio-economic and policy issues. Written by a team of international expert scientists, under the guidance of Chief Editors Eric Wolanski and Donald McClusky, the Treatise on Estuarine and Coastal Science, Ten Volume Set examines topics in depth, and aims to provide a comprehensive scientific resource for all professionals and students in the area of estuarine and coastal science Most up-to-date reference for system-based coastal and estuarine science and management, from the inland watershed to the ocean shelf Chief editors have assembled a world-class team of volume editors and contributing authors Approach focuses on the physical, biological, chemistry, ecosystem, human, ecological and economics processes, to show how to best use multidisciplinary science to ensure earth's sustainability Provides a comprehensive scientific resource for all professionals and students in the area of estuarine and coastal science Features up-to-date chapters covering a full range of topics

Sarsia

Author :
Publisher :
ISBN 13 :
Total Pages : 802 pages
Book Rating : 4.3/5 (91 download)

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Download or read book Sarsia written by and published by . This book was released on 1986 with total page 802 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Index Medicus

Author :
Publisher :
ISBN 13 :
Total Pages : 1504 pages
Book Rating : 4.:/5 (319 download)

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Download or read book Index Medicus written by and published by . This book was released on 2004 with total page 1504 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. for 1963- include as pt. 2 of the Jan. issue: Medical subject headings.

ICES Zooplankton Methodology Manual

Author : Roger Harris
Publisher : Elsevier
ISBN 13 : 0080495338
Total Pages : 707 pages
Book Rating : 4.0/5 (84 download)

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Book Synopsis ICES Zooplankton Methodology Manual by : Roger Harris

Download or read book ICES Zooplankton Methodology Manual written by Roger Harris and published by Elsevier. This book was released on 2000-02-14 with total page 707 pages. Available in PDF, EPUB and Kindle. Book excerpt: The term "zooplankton" describes the community of floating, often microscopic, animals that inhabit aquatic environments. Being near the base of the food chain, they serve as food for larger animals, such as fish. The ICES (International Council for the Exploration of the Sea) Zooplankton Methodology Manual provides comprehensive coverage of modern techniques in zooplankton ecology written by a group of international experts. Chapters include sampling, acoustic and optical methods, estimation of feeding, growth, reproduction and metabolism, and up-to-date treatment of population genetics and modeling. This book will be a key reference work for marine scientists throughout the world. Sampling and experimental design Collecting zooplankton Techniques for assessing biomass and abundance Protozooplankton enumeration and biomass estimation New optical and acoustic techniques for estimating zooplankton biomass and abundance Methods for measuring zooplankton feeding, growth, reproduction and metabolism Population genetic analysis of zooplankton Modelling zooplankton dynamics This unique and comprehensive reference work will be essential reading for marine and freshwater research scientists and graduates entering the field.

Fisheries Research Bulletin

Author :
Publisher :
ISBN 13 :
Total Pages : 556 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Fisheries Research Bulletin by :

Download or read book Fisheries Research Bulletin written by and published by . This book was released on 1979 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Emerging Issues in Fish Larvae Research

Author : Manuel Yúfera
Publisher : Springer
ISBN 13 : 3319732447
Total Pages : 302 pages
Book Rating : 4.3/5 (197 download)

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Book Synopsis Emerging Issues in Fish Larvae Research by : Manuel Yúfera

Download or read book Emerging Issues in Fish Larvae Research written by Manuel Yúfera and published by Springer. This book was released on 2018-01-22 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with the fundamentals of key physiological mechanisms involved in the development and growth of fish larvae. Chapters included show how the environmental and nutritional conditions are affecting the developmental process from its molecular basis and how these same conditions also influence the final characteristics of late larvae and fry. This volume provides recent findings on the importance of environmental rhythms, some specific nutrients and the adequate microbial environment in the developmental processes including recent results of current research projects.

Nutrition Abstracts and Reviews

Author :
Publisher :
ISBN 13 :
Total Pages : 1728 pages
Book Rating : 4.:/5 (31 download)

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Download or read book Nutrition Abstracts and Reviews written by and published by . This book was released on 1990 with total page 1728 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Handbook of Fish Biology and Fisheries

Author : Paul J. B. Hart
Publisher : John Wiley & Sons
ISBN 13 : 1405123222
Total Pages : 432 pages
Book Rating : 4.4/5 (51 download)

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Book Synopsis Handbook of Fish Biology and Fisheries by : Paul J. B. Hart

Download or read book Handbook of Fish Biology and Fisheries written by Paul J. B. Hart and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent decades have witnessed strong declines in fish stocks aroundthe globe, amid growing concerns about the impact of fisheries onmarine and freshwater biodiversity. Fisheries biologists andmanagers are therefore increasingly asking about aspects ofecology, behaviour, evolution and biodiversity that weretraditionally studied by people working in very separate fields.This has highlighted the need to work more closely together, inorder to help ensure future success both in management andconservation. The Handbook of Fish Biology and Fisheries has beenwritten by an international team of scientists and practitioners,to provide an overview of the biology of freshwater and marine fishspecies together with the science that supports fisheriesmanagement and conservation. This volume, subtitled Fish Biology, reviews a broadvariety of topics from evolutionary relationships and globalbiogeography to physiology, recruitment, life histories, genetics,foraging behaviour, reproductive behaviour and community ecology.The second volume, subtitled Fisheries, uses much of thisinformation in a wide-ranging review of fisheries biology,including methods of capture, marketing, economics, stockassessment, forecasting, ecosystem impacts and conservation. Together, these books present the state of the art in ourunderstanding of fish biology and fisheries and will serve asvaluable references for undergraduates and graduates looking for acomprehensive source on a wide variety of topics in fisheriesscience. They will also be useful to researchers who needup-to-date reviews of topics that impinge on their fields, anddecision makers who need to appreciate the scientific backgroundfor management and conservation of aquatic ecosystems. To order volume I, go to the box in the top right hand corner.Alternatively to order volume II, go to:http://www.blackwellpublishing.com/book.asp?ref=063206482X or toorder the 2 volume set, go to:http://www.blackwellpublishing.com/book.asp?ref=0632064838. Provides a unique overview of the study of fish biology andecology, and the assessment and management of fish populations andecosystems. The first volume concentrates on aspects of fish biology andecology, both at the individual and population levels, whilst thesecond volume addresses the assessment and management of fishpopulations and ecosystems. Written by an international team of expert scientists andpractitioners. An invaluable reference tool for both students, researchers andpractitioners working in the fields of fish biology andfisheries.

Behaviour of Fishes

Author : Arvind N. Shukla
Publisher : Discovery Publishing House
ISBN 13 : 9788183563901
Total Pages : 320 pages
Book Rating : 4.5/5 (639 download)

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Book Synopsis Behaviour of Fishes by : Arvind N. Shukla

Download or read book Behaviour of Fishes written by Arvind N. Shukla and published by Discovery Publishing House. This book was released on 2009 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Research Awards Index

Author :
Publisher :
ISBN 13 :
Total Pages : 1332 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Research Awards Index by :

Download or read book Research Awards Index written by and published by . This book was released on with total page 1332 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Aquaculture Nutrition

Author : Daniel L. Merrifield
Publisher : John Wiley & Sons
ISBN 13 : 0470672714
Total Pages : 519 pages
Book Rating : 4.4/5 (76 download)

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Book Synopsis Aquaculture Nutrition by : Daniel L. Merrifield

Download or read book Aquaculture Nutrition written by Daniel L. Merrifield and published by John Wiley & Sons. This book was released on 2014-10-20 with total page 519 pages. Available in PDF, EPUB and Kindle. Book excerpt: Manipulation of the microbial gut content of farmed fishes and crustaceans can have a marked effect on their general health, growth, and quality. Expertly covering the science behind the use of prebiotics and probiotics this landmark book explains how the correct manipulation of the gut flora of farmed fishes and crustaceans can have a positive effect on their health, growth rates, feed utilization, and general wellbeing. Aquaculture Nutrition: Gut Health, Probiotics and Prebiotics provides a comprehensive overview of the current knowledge of the gut microbiomes of fish and their importance with respect to host-fish health and performance, providing in-depth, cutting-edge fundamental and applied information. Written by many of the world’s leading authorities and edited by Dr Daniel Merrifield and Professor Einar Ringø, this important book discusses in detail the common mechanisms for modulating microbiomes, particularly at the gut level (e.g. probiotics, prebiotics and synbiotics). The book is a key resource for an understanding of the historical development of these products, their known mechanisms of action and their degree of efficacy as presently demonstrated in the literature. The fundamental material provided on the gut microbiota itself, and more broad aspects of microbe-live feed interactions, provide essential reading for researchers, academics and students in the areas of aquaculture nutrition, fish veterinary science, microbiology, aquaculture, fish biology and fisheries. Those involved in the development and formulation of aquaculture feeds and those with broader roles within the aquaculture industry will find a huge wealth of commercially-important information within the book’s covers. All libraries in universities and research establishments where biological sciences, nutrition and aquaculture are studied and taught, should have copies of this excellent book on their shelves.

Food Intake in Fish

Author : Dominic Houlihan
Publisher : John Wiley & Sons
ISBN 13 : 0470999500
Total Pages : 448 pages
Book Rating : 4.4/5 (79 download)

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Book Synopsis Food Intake in Fish by : Dominic Houlihan

Download or read book Food Intake in Fish written by Dominic Houlihan and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: The intake of food by fishes is an area of study that is of great importance to the applied sciences of fisheries and aquaculture for a number of reasons. For example a thorough knowledge of factors influencing the ingestion of feed can lead to successful manipulation of the rearing environment of cultured fishes, thereby ensuring improved growth performance and feed utilisation, and decreasing the amount of waste (and consequent pollution) per unit of fish produced. This important book, which has arisen out of a European Union COST programme, illustrates how insights into the biological and environmental factors that underlie the feeding responses of fish may be used to address practical issues of feed management. Food Intake in Fish contains carefully edited contributions from internationally recognised scientists, providing a book that is an invaluable tool and reference to all those involved in aquaculture, especially those working in the aquaculture feed industry and scientific personnel in commercial and research aquaculture facilities. This book should also find a place on the shelves of fish biologists and physiologists and as a reference in libraries of universities, research establishments and aquaculture equipment companies.