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Columbia River white sturgeon (Acipenser transmontanus) population genetics and early life history study: final report January 1, 1986 to December 31, 1986

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TitleColumbia River white sturgeon (Acipenser transmontanus) population genetics and early life history study: final report January 1, 1986 to December 31, 1986Alternative TitleColumbia River white sturgeon population genetics and early life history studyPersonal NameBrannon, E. L.Setter, Ann L.Miller, M.Brewer, Saundra 1936-Winans, Gary A. (Gary Albert)Utter, Fred 1931-Holm, FredCorporate NameUniversity of Washington School of FisheriesNorthwest and Alaska Fisheries Center (U.S.)United States Bonneville Power Administration Division of Fish and WildlifeSubjectWhite sturgeon fisheries -- Columbia RiverWhite sturgeon -- GeneticsWhite sturgeon -- Habitat -- Columbia RiverSturgeon fisheries -- Columbia RiverDate1986CollectionBonneville Power Administration Last edited by: Angie Jannelli

LanguageengFormonline resourceExtent64 pagesType of ResourcetextIssuancemonographicSummaryThe 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 successNoteE. Brannon, et al., School of Fisheries, University of Washington ; National Marine Fisheries Service, Northwest and Alaska Fisheries Center ; to Fred Holm, Project Manager, Bonneville Power Administration, U.S. Department of Energy, Division of Fish and Wildlife"December 1986"--Cover"Final report 1986"--CoverIncludes bibliographical references (pages 38-42)Final report January 1, 1986 to December 31, 1986DE-AI79-84BP18952 83-316

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Other FormatPrint version:. Brannon, E. L. Columbia River white sturgeon (Acipenser transmontanus) population genetics and early life history study. Portland, Oregon : United States, Department of Energy, Bonneville Power Administration, Division of Fish and Wildlife, 1986. (OCoLC)18209244Library ClassificationE 1.99:doe/bp-18952-2E 5.2:ST 9/986XOCLC Number727302895Restrictions on Accesshttp://rightsstatements.org/vocab/NoC-US/1.0/

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