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Fish

Diadromous Saltwater

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Inland Waters

Rivers & Streams Lakes

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Oceans & Seas Bays, Deltas & Estuaries Intertidal/Coastline Reefs

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Cellular and Genetic Tracers of Transport Time in Groundwater Systems

Publisher: USGS | Science Center: Western Fisheries Research Center (WFRC, Seattle) | Format: URL

wfrc.usgs.gov — Artificially maintained water levels within the lake and stresses placed upon the aquifer by well withdrawals facilitate movement of water from the lake into the local ground water system, potentially allowing contaminants to enter the aquifer from the lake. This raises national concern because similar lakeside settings exist throughout the United More...

  • Diatom image of the species Cymbella tumida.

Role of Demographic, Genetic, and Environmental Factors Influencing the Spread of Hybridization Between Native Westslope Cutthroat and Non-Native Rainbow Trout

Publisher: USGS | Science Center: Northern Rocky Mountain Science Center (NRMSC, Bozeman) | Format: URL

nrmsc.usgs.gov — This research project examines dispersal and several components of fitness between hybrids and non-hybridized fish. Further, scientists will examine the relationship between environmental factors and genetic and demographic characteristics of hybrid populations. The specific objectives are: (1) to compare the spawning dynamics and dispersal More...

  • Radiotagged hybrid trout

Conservation Genetics: Fish

Publisher: USGS | Science Center: Biological Informatics | Format: URL

biology.usgs.gov — This page presents samples of genetics and genomics research from the USGS Biological Resources Discipline about the conservation genetics of fish.

  • Image of a Pallid sturgeon

Ecological Genetics of Lake Clark Sockeye Salmon (Oncorhynchus nerka)

Publisher: USGS | Science Center: Alaska Science Center (ASC, Anchorage) | Format: URL

www.absc.usgs.gov — Ecological Genetics of the Lake Clark Sockeye Salmon (Oncorhynchus nerka) characterizes the population structure and genetic diversity. This issue overview aids managers in defining and prioritizing conservation units of sockeye salmon within Lake Clark National Park and Preserve.

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Technical assistance in sturgeon population dynamics

Publisher: USGS | Science Center: Leetown Science Center (LSC, Kearneysville) | Format: URL

www.lsc.usgs.gov — Molecular genetics has recently achieved an important place in contemporary conservation biology as it has proven to be a robust tool for identifying reproductive isolation among populations, permitting the delineation of management units (MUs) and allowing assessment of conservation priorities from an evolutionary perspective (i.e., More...

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Genetics of Alaskan Fishes

Publisher: USGS | Science Center: Alaska Science Center (ASC, Anchorage) | Format: URL

www.absc.usgs.gov — Genetics of Alaska Fishes Projects studies include comparing molecular genetics for rainbow trout throughout their range in Alaska and use microsatellite analyses to look at hatchery and wild populations of steelhead in the Snake River (Phylogeographic analysis of rainbow trout in Alaska). Research also looks at genetic population structure of More...

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