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Lake Roosevelt Fisheries Monitoring Progam Thyroid Induced Chemical Imprinting In Early Life Stages And Assessment Of Smoltification In Kokanee Salmon Implications For Operating Lake Roosevelt Kokanee Salmon Hatcheries 1993 Supplement Report
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Book Synopsis Lake Roosevelt Fisheries Monitoring Progam ; Thyroid-Induced Chemical Imprinting in Early Life Stages and Assessment of Smoltification in Kokanee Salmon Implications for Operating Lake Roosevelt Kokanee Salmon Hatcheries ; 1993 Supplement Report by :
Download or read book Lake Roosevelt Fisheries Monitoring Progam ; Thyroid-Induced Chemical Imprinting in Early Life Stages and Assessment of Smoltification in Kokanee Salmon Implications for Operating Lake Roosevelt Kokanee Salmon Hatcheries ; 1993 Supplement Report written by and published by . This book was released on 1994 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1991, two hatcheries were built to provide a kokanee salmon and rainbow trout fishery for Lake Roosevelt as partial mitigation for the loss of anadromous salmon and steelhead caused by construction of Grand Coulee Dam. The Sherman Creek Hatchery, located on a tributary of Lake Roosevelt to provide an egg collection and imprinting site, is small with limited rearing capability. The second hatchery was located on the Spokane Indian Reservation because of a spring water source that supplied cold, pure water for incubating and rearing eggs.'The Spokane Tribal Hatchery thus serves as the production facility. Fish reared there are released into Sherman Creek and other tributary streams as 7-9 month old fry. However, to date, returns of adult fish to release sites has been poor. If hatchery reared kokanee imprint to the hatchery water at egg or swim up stages before 3 months of age, they may not be imprinting as 7-9 month old fry at the time of stocking. In addition, if these fish undergo a smolt phase in the reservoir when they are 1.5 years old, they could migrate below Grand Coulee Dam and out of the Lake Roosevelt system. In the present investigation, which is part of the Lake Roosevelt monitoring program to assess hatchery effectiveness, kokanee salmon were tested to determine if they experienced thyroxine-induced chemical imprinting and smoltification similar to anadromous salmonids. Determination of the critical period for olfactory imprinting was determined by exposing kokanee to different synthetic chemicals (morpholine or phenethyl alcohol) at different life stages, and then measuring the ability to discriminate the chemicals as sexually mature adults. Whole body thyroxine content and blood plasma thyroxine concentration was measured to determine if peak thyroid activity coincided with imprinting or other morphological, physiological or behavioral transitions associated with smoltification.
Book Synopsis Recommendations to Amend the Resident Fish and Wildlife Sections of the Columbia River Basin Fish and Wildlife Program by :
Download or read book Recommendations to Amend the Resident Fish and Wildlife Sections of the Columbia River Basin Fish and Wildlife Program written by and published by . This book was released on 1995 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of Thyroxine Concentration as an Indicator of the Critical Period for Imprinting in Kokanee Salmon (Oncorhynchus Nerka) by :
Download or read book Measurement of Thyroxine Concentration as an Indicator of the Critical Period for Imprinting in Kokanee Salmon (Oncorhynchus Nerka) written by and published by . This book was released on 1992 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Lake Roosevelt Fisheries Monitoring Program ; 1993 Annual Report by :
Download or read book Lake Roosevelt Fisheries Monitoring Program ; 1993 Annual Report written by and published by . This book was released on 1996 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first three years of this study were used to collect pre-hatchery baseline data on the fishery. The Spokane Tribal Hatchery began stocking kokanee and rainbow trout in 1991 and Sherman Creek Hatchery began stocking by 1992. The estimated number of kokanee (13,986) harvested in 1993 was similar to harvest numbers in the previous years, but the number of rainbow trout (403,277) and walleye (337,413) harvested doubled from estimates made in past years. The stocking of yearling kokanee began in1992, totaling approximately 140,000 yearlings. The yearlings were not expected to begin entering the creel until 1993 with the main harvest in 1994. As a result, it was too early to speculate on the effect of stocking yearlings instead of fry on the creel. The 1993 rainbow trout harvest escalated. The increased number of walleye harvested was believed to be from the increased angler pressure. Kokanee salmon and rainbow trout growth appeared to be similar to previous years. The growth of walleye was less than in year past, but the average size of walleye in the creel increased. The feeding habits of kokanee, rainbow trout and walleye in 1993 were similar to previous years.
Book Synopsis Lake Roosevelt Fisheries Monitoring Program ; Lake Roosevelt Fisheries and Limnological Research ; 1995 Annual Report by :
Download or read book Lake Roosevelt Fisheries Monitoring Program ; Lake Roosevelt Fisheries and Limnological Research ; 1995 Annual Report written by and published by . This book was released on 1996 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document contains three 1995 annual reports, organized by sections. The first section contains the Lake Roosevelt Data Collection Project report. The second section contains the Lake Roosevelt Monitoring Program report, and the third section contains the Kokanee Salmon Imprinting report. These three projects were interdependent upon one another for data collection and interpretation. As a result, the authors combined the three annual report into one document in order to provide the reader with all aspects of the related analysis. Each section includes an abstract, introduction, methods, results, discussion, recommendations, references and appendices. In each discussion section, they have attempted to relate the results of the studies to existing knowledge, and speculate on management recommendations.
Book Synopsis Lake Roosevelt Fisheries Monitoring Program ; 1988-1989 Annual Report by :
Download or read book Lake Roosevelt Fisheries Monitoring Program ; 1988-1989 Annual Report written by and published by . This book was released on 1990 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the Northwest Power Planning Council's 1987 Columbia River Basin Fish and Wildlife Program (NPPC 1987), the Council directed the Bonneville Power Administration (BPA) to construct two kokanee salmon (Oncorhynchus nerka) hatcheries as partial mitigation for the loss of anadromous salmon and steelhead incurred by construction of Grand Coulee Dam [Section 903 (g)(l)(C)]. The hatcheries will produce kokanee salmon for outplanting into Lake Roosevelt as well as rainbow trout (Oncorhynchus mykiss) for the Lake Roosevelt net-pen program. In section 903 (g)(l)(E), the Council also directed BPA to fund a monitoring program to evaluate the effectiveness of the kokanee hatcheries. The monitoring program included the following components: (1) a year-round, reservoir-wide, creel survey to determine angler use, catch rates and composition, and growth and condition of fish; (2) assessment of kokanee, rainbow, and walleye (Stizostedion vitreum) feeding habits and densities of their preferred prey, and; (3) a mark and recapture study designed to assess the effectiveness of different locations where hatchery-raised kokanee and net pen reared rainbow trout are released. The above measures were adopted by the Council based on a management plan, developed by the Upper Columbia United Tribes Fisheries Center, Spokane Indian Tribe, Colville Confederated Tribes, Washington Department of Wildlife, and National Park Service, that examined the feasibility of restoring and enhancing Lake Roosevelt fisheries (Scholz et al. 1986). In July 1988, BPA entered into a contract with the Spokane Indian Tribe to initiate the monitoring program. The projected duration of the monitoring program is through 1995. This report contains the results of the monitoring program from August 1988 to December 1989.
Book Synopsis Lake Roosevelt Fisheries Evaluation Program ; Evaluation of Limiting Factors for Stocked Kokanee and Rainbow Trout in Lake Roosevelt, Washington, 1999 Annual Report by :
Download or read book Lake Roosevelt Fisheries Evaluation Program ; Evaluation of Limiting Factors for Stocked Kokanee and Rainbow Trout in Lake Roosevelt, Washington, 1999 Annual Report written by and published by . This book was released on 2009 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hatchery supplementation of kokanee Oncorhynchus nerka and rainbow trout O. mykiss has been the primary mitigation provided by Bonneville Power Administration for loss of anadromous fish to the waters above Grand Coulee Dam (GCD). The hatchery program for rainbow trout has consistently met management goals and provided a substantial contribution to the fishery; however, spawner returns and creel survey results for kokanee have been below management goals. Our objective was to identify factors that limit limnetic fish production in Lake Roosevelt by evaluating abiotic conditions, food limitations, piscivory, and entrainment. Dissolved oxygen concentration was adequate throughout most of the year; however, levels dropped to near 6 mg/L in late July. For kokanee, warm water temperatures during mid-late summer limited their nocturnal distribution to 80-100 m in the lower section of the reservoir. Kokanee spawner length was consistently several centimeters longer than in other Pacific Northwest systems, and the relative weights of rainbow trout and large kokanee were comparable to national averages. Large bodied daphnia (> 1.7 mm) were present in the zooplankton community during all seasons indicating that top down effects were not limiting secondary productivity. Walleye Stizostedion vitreum were the primary piscivore of salmonids in 1998 and 1999. Burbot Lota lota smallmouth bass Micropterus dolomieui, and northern pikeminnow Ptychocheilus oregonensis preyed on salmonids to a lesser degree. Age 3 and 4 walleye were responsible for the majority (65%) of the total walleye consumption of salmonids. Bioenergetics modeling indicated that reservoir wide consumption by walleye could account for a 31-39% loss of stocked kokanee but only 6-12% of rainbow trout. Size at release was the primary reason for differential mortality rates due to predation. Entrainment ranged from 2% to 16% of the monthly abundance estimates of limnetic fish, and could account for 30% of total mortality of limnetic fishes, depending on the contribution of littoral zone fishes. Inflow to GCD forebay showed the strongest negative relationship with entrainment whereas reservoir elevation and fish vertical distribution had no direct relationship with entrainment. Our results indicate that kokanee and rainbow trout in Lake Roosevelt were limited by top down impacts including predation and entrainment, whereas bottom up effects and abiotic conditions were not limiting.
Book Synopsis Mechanisms of Migration in Fishes by : James D. McCleave
Download or read book Mechanisms of Migration in Fishes written by James D. McCleave and published by Springer Science & Business Media. This book was released on 2013-03-13 with total page 567 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Fish Farming Technology by : H. Reinersten
Download or read book Fish Farming Technology written by H. Reinersten and published by CRC Press. This book was released on 2020-11-17 with total page 497 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past few years, it has become more and more obvious that fish farming will become increasingly important in the future. As fish farming moves into its industrial phase, technology will be an important factor in determining its successful development. It is therefore important for scientists & representatives from the aquaculture industry to meet to define state of the art and explore future development of fish farming technology for different fish species. 81 papers and abstracts were presented at the conference. The proceedings reflect the different sections of the conference: the plenum sessions and three parallel sessions: Juvenile marine fish, open production plants, closed production plants and poster sessions.
Book Synopsis Molecular Biology Frontiers by : Peter W. Hochachka
Download or read book Molecular Biology Frontiers written by Peter W. Hochachka and published by . This book was released on 1993-12 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second volume in the series covers such topics as DNA fingerprinting of fishes, the cytochromes P450 in fish, the molecular biology of bacterial fish diseases, and new insights into the origins of the diversity and distribution of fish antifreeze proteins. The book will be of great value to fisheries scientists, animal biochemists, physiologists and endocrinologists, and aquaculturists. It will provide researchers and students alike with a pertinent information source from theoretical and experimental angles.
Book Synopsis Feeding Ecology of Fish by : Shelby D. Gerking
Download or read book Feeding Ecology of Fish written by Shelby D. Gerking and published by Elsevier. This book was released on 2014-04-25 with total page 443 pages. Available in PDF, EPUB and Kindle. Book excerpt: Feeding Ecology of Fish establishes a comprehensive framework for the variable ecological patterns exemplified by feeding fishes. The author, a former president of the American Fisheries Society, devotes special attention to synthesizing empirical studies in categorizing feeding patterns. This book shows how remarkably adaptable fish can be with regard to selecting food, often from trophic levels not usually occupied. Relying on a thorough literature survey, Feeding Ecology of Fish will be an invaluable reference for both fishery scientists and ecological theorists. - Organization by trophic level - Emphasis on empirical studies - Broad coverage of a diverse field
Book Synopsis Studies on the Pacific Pilchard Or Sardine (S̲a̲r̲d̲i̲n̲o̲p̲s̲ C̲a̲e̲r̲u̲l̲e̲a̲). by : Oscar E. Sette
Download or read book Studies on the Pacific Pilchard Or Sardine (S̲a̲r̲d̲i̲n̲o̲p̲s̲ C̲a̲e̲r̲u̲l̲e̲a̲). written by Oscar E. Sette and published by . This book was released on 1950 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Phylogenetic and Biochemical Perspectives by : Peter W. Hochachka
Download or read book Phylogenetic and Biochemical Perspectives written by Peter W. Hochachka and published by . This book was released on 1991-09-05 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new series on the biochemistry and molecular biology of fishes has grown out of the demand for state-of-the-art review articles in a rapidly expanding field of research. The goal is to provide researchers and students with an appropriate balance between experimental results and theoretical concepts.
Book Synopsis Pilchard Eggs and Larvae and Other Fish Larvae, Pacific Coast, 1950 by : Elbert H. Ahlstrom
Download or read book Pilchard Eggs and Larvae and Other Fish Larvae, Pacific Coast, 1950 written by Elbert H. Ahlstrom and published by . This book was released on 1952 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pilchard Eggs and Larvae and Other Fish Larvae, Pacific Coast, 1951 by : Elbert H. Ahlstrom
Download or read book Pilchard Eggs and Larvae and Other Fish Larvae, Pacific Coast, 1951 written by Elbert H. Ahlstrom and published by . This book was released on 1953 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aquatic Weeds written by A. H. Pieterse and published by . This book was released on 1990 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new book, published for the European Weed Research Society, provides a detailed overview of the management of aquatic weeds, which cause serious problems in bodies of water throughout the world. This state-of-the-art review includes worldwide coverage of these undesirable organisms. It provides readers with information on the ecology and management of aquatic weeds, as well as in-depth discussion of environmental consequences of weed control methods. Valuable appendix materials give useful listings of the weeds, biological control agents used against aquatic weeds, and herbicides used in fresh waters.
Book Synopsis Bibliographia Zoologiae Et Geologiae: Volume 1 by : Louis Agassiz
Download or read book Bibliographia Zoologiae Et Geologiae: Volume 1 written by Louis Agassiz and published by Cambridge University Press. This book was released on 2013-07-04 with total page 539 pages. Available in PDF, EPUB and Kindle. Book excerpt: This four-volume catalogue, published 1848-54, provides an extensive list of the zoological and geological literature available at the time.
