Use Of Otolith Microstructure To Identify Racial Summer Or Winter Origins Of Ocean Caught Steelhead Trout Salmo Gairdneri PDF Download

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Use of Otoliths to Differentiate Juvenile Steelhead Trout from Juvenile Rainbow Trout in the Lower Deschutes River, Oregon

Use of Otoliths to Differentiate Juvenile Steelhead Trout from Juvenile Rainbow Trout in the Lower Deschutes River, Oregon
Author: James Todd Rybock
Publisher:
Total Pages: 88
Release: 1973
Genre: Trout
ISBN:

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Reported are results of a study of otolith nuclei as a means to separate juvenile steelhead trout (Salmo gairdneri) from juvenile rainbow trout (S. gairdneri) which co-exist in the lower Deschutes River, Oregon. An intensive recreational fishery necessitated development of a technique for separation so that the impact of the fishery on each race could be assessed independently. Results revealed that steelhead trout mature at a larger size than rainbow trout, egg size in both races is directly related to body size of dam, and size of otolith nucleus is positively correlated with egg size in rainbow trout. Examination of adults demonstrated, in fact, that otolith nuclei of steelhead are significantly larger than those of rainbow. Size of otolith nucleus does not change with growth of either fish, nor are there differences due to sex or origin. The validity and utility of this method to separate the races were confirmed. Regressions of length and weight of otolith on length of fish demonstrated that otoliths of juvenile steelhead grow at the same rate as those of rainbow, whereas adult steelhead on their spawning migration are longer than rainbow for a given length or weight of otolith. A list of methods used by others to facilitate the viewing of otoliths and a discussion of the formation of the otolith nucleus are included.


Otolith Microstructure Examination and Analysis

Otolith Microstructure Examination and Analysis
Author: David K. Stevenson
Publisher: McClain Printing Company
Total Pages: 422
Release: 1992
Genre: Medical
ISBN:

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The field of otolith microstructure research has experienced phenomenal growth since the early 1970s and now forms the basis for hundreds of studies in early life history, age, growth, recruitment, migration, mortality and stock structure. This book represents the first effort to compile and summarize the many techniques and procedures associated with studies of otolith microstructure. The complete sequence of events, from sample collection to data analysis, is covered comprehensively, so as to be applicable to most species and situations. The various chapters include both published and unpublished procedures.


Mechanisms of Migration in Fishes

Mechanisms of Migration in Fishes
Author: James D. McCleave
Publisher: Springer Science & Business Media
Total Pages: 567
Release: 2013-03-13
Genre: Science
ISBN: 1461327636

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The last major synthesis of our knowledge of fish migration and the underlying transport and guidance phenomena, both physical and biological, was "Fish Migration" published 16 years ago by F.R. Harden Jones (1968). That synthesis was based largely upon what could be gleaned by classical fishery-biology techni.ques, such as tagging and recapture studies, commercial fishing statistics, and netting and trapping studies. Despite the fact that Harden Jones also provided, with a good deal of thought and speculation, a theoretical basis for studying the various aspects of fish migration and migratory orientation, progress in this field has been, with a few excepti.ons, piecemeal and more disjointed than might have been expected. Thus we welcomed the approach from the NATO Marine Sciences Programme Panel and the encouragement from F.R. Harden Jones to develop a proprosal for, and ultimately to organize, a NATO Advanced Research Institute (ARI) on mechanisms of fish migration. Substantial progress had been made with descriptive, analytical and predictive approaches to fish migration since the appearance of "Fish ~ligration." Both because of the progress and the often conflicting results of research, we felt that the time was again right and the effort justified to synthesize and to critically assess our knowledge. Our ultimate aim was to identify the gains and shortcomings and to develop testable hypotheses for the next decade or two.


Handbook of Fish Biology and Fisheries

Handbook of Fish Biology and Fisheries
Author: Paul J. B. Hart
Publisher: John Wiley & Sons
Total Pages: 432
Release: 2008-04-15
Genre: Technology & Engineering
ISBN: 1405123222

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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.


Early Life History and Recruitment in Fish Populations

Early Life History and Recruitment in Fish Populations
Author: R.C. Chambers
Publisher: Springer Science & Business Media
Total Pages: 638
Release: 1997-07-31
Genre: Science
ISBN: 9780412641909

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Many of the processes influencing recruitment to an adult fish population or entry into a fishery occur very early in life. The variations in life histories and behaviours of young fish and the selective processes operating on this variation ultimately determine the identities and abundance of survivors. This important volume brings together contributions from many of the world's leading researchers from the field of fish ecology. The book focuses on three major themes of pressing importance in the analysis of the role that the early life history of fishes plays in the number and quality of recruits: the selective processes at play in their early life history; the contributions of early life history to the understanding of recruitment.


Encyclopedia of Biomedical Gerontology

Encyclopedia of Biomedical Gerontology
Author:
Publisher: Academic Press
Total Pages: 1656
Release: 2019-11-20
Genre: Medical
ISBN: 0128160764

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Encyclopedia of Biomedical Gerontology, Three Volume Set presents a wide range of topics, ranging from what happens in the body during aging, the reasons and mechanisms relating to those age-related changes, and their clinical, psychological and social modulators and determinants. The book covers the biological and medical aspects of gerontology within the general framework of the biological basis of assessing age, biological mechanisms of aging, age-related changes in biological systems, human age-related diseases, the biomedical practicality and impracticality of interventions, and finally, the ethics of intervention. Provides a ‘one-stop’ resource to information written by world-leading scholars in the field of biomedical gerontology Fills a critical gap of information in a field that has seen significant progress in the last 10 years


San Joaquin River Restoration Program

San Joaquin River Restoration Program
Author: United States. Bureau of Reclamation
Publisher:
Total Pages: 114
Release: 2011
Genre: Environmental impact analysis
ISBN:

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