Download or read book Genetic Monitoring of the Upper Columbia River White Sturgeon Conservation Acquaculture Program written by Andrea Drauch Schreier and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 2016 Genetic Diversity Monitoring of White Sturgeon in the Kootenai Tribe of Idaho Native Fish Conservation Aquaculture Program and Study of 10N Reproductive Development written by Andrea Schreier and published by . This book was released on 2017 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Kootenai Tribe of Idaho's Native Fish Conservation Aquaculture Program (KTOI NFCAP) has been propagating and releasing white sturgeon to support the endangered Kootenai River white sturgeon population since the early 1990s. Because genetic diversity loss often accompanies captive breeding programs, an important goal of the NFCAP is to preserve the wild population's genetic diversity and protect its adaptive potential. Since 2006, the Genomic Variation Laboratory (GVL) has been conducting genetic monitoring of the Tribe's white sturgeon conservation aquaculture program. We've used neutral microsatellites to measure the amount of genetic diversity present in the wild population and monitor the amount of diversity represented in each year class produced. Individual genotypes determined by the monitoring project can be used as genetic tags for parentage analysis for future NFCAP broodstock management. Parentage analysis can be conducted on potential broodstock of hatchery origin to prevent crossing close relatives (e.g. full siblings). Here we present the results of genetic monitoring of the 2016 year class."--Introduction (page 2).
Download or read book Conservation Genetics of North American Green Sturgeon written by Joshua Adam Israel and published by . This book was released on 2007 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Use of Polysomic Genetic Markers to Address Critical Uncertainties in White Sturgeon Biology and Management written by Andrea Marie Schreier and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The application of genetic markers to investigate evolutionary and ecological questions about white sturgeon, Acipenser transmontanus, has been limited due to the species' highly duplicated nuclear genome. Here, polysomic microsatellite markers were used to 1) examine the ancestral level of genome duplication in white sturgeon, 2) examine genetic diversity and patterns of population structure within and among drainages across the species' range, and 3) provide genetic monitoring for a conservation aquaculture program sustaining an endangered white sturgeon population. In the first chapter, we followed the inheritance of eight microsatellite markers in 15 families of white sturgeon from a commercial caviar farm to determine whether white sturgeon (~250 chromosomes) should be classified as tetraploid or octoploid. The eight microsatellite loci were detected predominantly in four or eight copies, with one locus observed in>8 copies. Numbers of alleles per locus, patterns of allele transmission, and inference of gene copy number in parents suggested that white sturgeon should be considered ancient octoploids. The discovery of dodecaploid parents and their decaploid offspring in the farm population, confirmed by flow cytometry analysis, indicated that some aspect of sturgeon aquaculture was inducing spontaneous autopolyploidy in white sturgeon. Next, microsatellite markers were applied to examine white sturgeon population structure across the species' range. Population assignment testing was used to determine the origin of white sturgeon sampled in non-natal estuaries, or those not containing a spawning population, to evaluate marine dispersal behavior. The Sacramento-San Joaquin River system was found to contain a single white sturgeon population while the Fraser River exhibited a hierarchical pattern of population structure. Strong levels of genetic divergence were detected above and below a natural barrier, Hells Gate, and fine-scale population substructure was identified above Hells Gate. Population structure in the Columbia River drainage (including the mainstem Columbia and Snake Rivers) was complex and suggested a pattern of isolation by distance. Net downstream gene flow also may have contributed to this pattern, with individuals migrating downstream through impoundments and over barriers with little upstream movement possible. There was no support for the current practice of managing each impounded reach on the Columbia or Snake rivers as a separate population. Lack of population structure within historically continuous river habitat found across the species' range suggested spawning site fidelity in white sturgeon may occur on a regional scale, with local gene flow among geographically proximate spawning sites. Population assignment of samples collected from non-natal estuaries indicated that all populations with ocean access make marine migrations, and individuals did not necessarily originate from the nearest spawning population. Finally, microsatellites were used to conduct genetic monitoring of the Kootenai Tribe of Idaho's conservation aquaculture program (CAP) for the endangered Kootenai River white sturgeon population. Continuous recruitment failure in this population has left it entirely dependent on the CAP for reproduction. A genetic profile database of wild broodstock used in the CAP was created to monitor hatchery-induced genetic changes in the Kootenai River population. Broodstock genotypes also were used to evaluate the accuracy of parentage assignment in the Kootenai River population, as hatchery managers soon will depend on this analysis to prevent inbreeding when most sexually mature adults available for captive breeding will be derived from hatchery production. Numbers of alleles and numbers of alleles per individual per locus were calculated to monitor the amount of wild type genetic diversity captured in broodstock utilized by the CAP. Parentage analysis with 18 microsatellite markers was validated in known hatchery families from the 2010 year class. Genetic diversity in the Kootenai River population was very low relative to other populations examined, likely due to founder effects and genetic drift after isolation from the mainstem Columbia c. 10,000 YBP. In less than one sturgeon generation, 96% of Kootenai River genetic diversity has been captured in broodstock that contributed offspring that survived to release in the Kootenai River and further propagation will likely preserve additional genetic variation. The 18 microsatellite panel improved parentage assignment accuracy and allowed a greater number of assignments relative to the previous panel used for parentage analysis, suggesting that this technique may become a useful tool in the management of this vulnerable population.
Download or read book Kootenai River White Sturgeon Conservation Aquaculture Program written by Paul J. Anders and published by . This book was released on 2008 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Kootenai Tribe of Idaho proposed an experimental hatchery program to address the decline of the white sturgeon population in the Kootenai River. Since its inception in 1990, the Kootenai River White Sturgeon Conservation Aquaculture Program has continued to meet its objective of reducing the threat of extinction by providing annual year classes from native broodstock, representing inherent genetic variability in its broodstock and progeny groups, and minimizing the introduction or transmission of pathogens or disease to the wild (source) population. By the late 1990s it became clear that non-hatchery efforts to restore recruitment were failing to counteract the extinction threat. This trend continues to the present (2008). In 2004 updated demographic analysis suggested that as few as 500 adults remained in the population, and triggered increased hatchery production for demographic and genetic conservation. In 2005, a report was prepared describing endangered Kootenai River white sturgeon population trends and causal factors of decline along with program history, protocols, and accomplishments during its first 15 years of operation (KTOI 2006). Subsequent data analysis revealed newly reduced survival rates based on lower recapture frequencies of earlier life stages and release groups of smaller fish. Embryos and free-embryos (yolks-sac larvae) released during several years in the early 2000s have provided no evidence for post-release survival to date. Review of these analyses warranted an updated report to recommend and delineate 2008 operational changes for the program. This report includes a brief program history for perspective, a summary of postrelease survival analyses of early life stages released from the Kootenai Hatchery (Justice and Pyper 2007), and recommends program operational changes for 2008. This report does not address hatchery operations beyond 2008 because the Program is currently involved in Step 1 of the Northwest Power and Conservation Council's 3- Step Hatchery Master Planning process. Recommendations regarding Program facility and operational changes beyond 2008 will be reported in future Master Planning documents."--Program overview.
Download or read book Conservation Physiology for the Anthropocene Issues and Applications written by and published by Elsevier. This book was released on 2022-11-18 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conservation Physiology for the Anthropocene – A Systems Approach, Volume 39B in the Fish Physiology series, is a comprehensive synthesis related to the physiology of fish in the Anthropocene. This volume helps solve knowledge gaps by considering the many ways in which different physiological systems (e.g., sensory physiology, endocrine, cardio-respiratory, bioenergetics, water and ionic balance and homeostasis, locomotion/biomechanics, gene function) and physiological diversity are relevant to the management and conservation of fish and fisheries. Chapters in this release include Using physiology for recovering imperiled species – the Delta smelt, Conservation hatcheries – the Sturgeon story, Aquatic pollutants and stressors, and more. Other sections discuss Fisheries interactions in a multi-stressor world, Environmental change in riverine systems - Amazon basin stressors, Environmental change in lakes and wetlands – East African basin stressors, Coral reef fish in a multi-stressor world, Polar fish in a multi-stressor world, Physiology informs fisheries restoration and habitat management, A physiological perspective on fish passage and entrainment, Invasive species control and management – the sea lamprey story, and On the conservation physiology of fishes for tomorrow. Includes authoritative contributions from an international board of authors, each with extensive expertise in the conservation physiology of fish Provides the most up-to-date information on the ways in which different physiological systems are relevant to the management and conservation of fish and fisheries Presents the latest release in the Fish Physiology series Identifies how anthropogenic stressors perturb physiological systems Explores how different physiological systems can be exploited to solve conservation problems
Download or read book Columbia River White Sturgeon Monitoring Study written by and published by . This book was released on 2001 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Action Before Extinction written by World Fisheries Trust and published by . This book was released on 1998 with total page 276 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 2012 with total page 710 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Columbia River White Sturgeon Genetics and Early Life History written by E. L. Brannon and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Columbia River White Sturgeon Genetics and Early Life History written by and published by . This book was released on 1988 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: The geographic area of the genetics study broadly covered the distribution range of sturgeon in the Columbia from below Bonneville Dam at Ilwaco at Lake Roosevelt, the Upper Snake River, and the Kootenai River. The two remote river sections provided data important for enhancement considerations. There was little electrophoretic variation seen among individuals from the Kootenai River. Upper Snake river sturgeon showed a higher percentage of polymorphic loci than the Kootenai fish, but lower than the other areas in the Columbia River we sampled. Sample size was increased in both Lake Roosevelt and at Electrophoretic variation was specific to an individual sampling area in several cases and this shaped our conclusions. The 1987 early life history studies concentrated on the feeding behavior of juvenile sturgeon. The chemostimulant components in prey attractive to sturgeon were examined, and the sensory systems utilized by foraging sturgeon were determined under different environmental conditions. These results were discussed with regard to the environmental changes that have occurred in the Columbia River. Under present river conditions, the feeding mechanism of sturgeon is more restricted to certain prey types, and their feeding range may be limited. In these situations, enhancement measures cannot be undertaken without consideration given to the introduction of food resources that will be readily available under present conditions. 89 refs., 7 figs., 11 tabs.
Download or read book Columbia River White Sturgeon Acipenser Transmontanus written by E. L. Brannon and published by . This book was released on 1986 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preservation of Genetic Variation Within Aquaculture Stocks of White Sturgeon Acipenser Transmontanus written by Jeffrey Allan Rodzen and published by . This book was released on 2001 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hells Canyon Hydroelectric Project written by and published by . This book was released on 2007 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Columbia River White Sturgeon Acipenser Transmontanus Population Genetics and Early Life History Study January 1 1986 to December 31 1986 Final Report written by and published by . This book was released on 1986 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 1986 Columbia River white sturgeon investigations continued to assess genetic variability of sturgeon populations isolated in various areas of the Columbia River, and to examine environmental factors in the habitat that may affect early life history success. Baseline data have been collected for three character sets. Twenty-eight loci have been analyzed for differences using electrophoresis, snout shapes were assessed for multivariate distinction, and scute counts have been examined as an index of variability. Fish that reside in the mid-Columbia and lower river have been sufficiently characterized by electrophoresis to compare with up-river areas. To date, few electrophoretic differences have been identified. However, Lake Roosevelt sturgeon sample size will be increased to determine if some of the observed differences from lower river fish are significant. Snout shape has been shown to be easily quantifiable using the digitizing technique. Scute count data initially indicate that variability exists within as well as between areas. Patterns of differentiation of one or more of these data sets may be used to formulate stock transplant guidelines essential for proper management or enhancement of this species. The historical habitat available to sturgeon in the Columbia River has changed through the development of hydroelectric projects. Dams have reduced the velocity and turbulence, and increased light penetration in the water column from less silt. These changes have affected the ability of sturgeon to feed and have made them more vulnerable to predation, which appear to have altered the ability of populations isolated in the reservoirs to sustain themselves. Present studies support the theory that both the biological and physical habitat characteristics of the Columbia River are responsible for reduced sturgeon survival, and justify consideration of enhancement initiatives above Bonneville to improve sturgeon reproductive success.
Download or read book Kootenai River White Sturgeon Conservation Aquaculture Program 1990 2005 written by United States. Bonneville Power Administration and published by . This book was released on 2006 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Upper Snake River White Sturgeon written by E. L. Brannon and published by . This book was released on 1989 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
