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Full-Text Articles in Life Sciences
Fish Assemblages In Manistee River Tributaries: Longitudinal Distribution Analysis, Seasonal Variation, And Riparian Improvement Evaluation, Nicholas J. Gressick
Fish Assemblages In Manistee River Tributaries: Longitudinal Distribution Analysis, Seasonal Variation, And Riparian Improvement Evaluation, Nicholas J. Gressick
Masters Theses
Sedimentation affects both stream physical and biological integrity. Improperly designed stream passage accompanied with sedimentation and altered hydrology can impede fish passage and reduce fish assemblage integrity. The purpose of this study was to: 1) quantify impacts of poorly constructed road stream crossings and eroding banks on fish assemblages, and 2) assess these sites as sediment sources and connectivity breaks on entire fish assemblages and individual fish species. Electrofishing was conducted during spring and fall 2004 and 2005. A total of 29 electrofishing reaches were sampled which included 5 road-stream and streambank restoration sites. Sickle Creek (1st order) had reduced …
Sublethal Exposure To Two Alkylphenolic Compounds And Their Influence On Development, Growth And Reproductive Behavior Of Crayfish, Steven J. Gauthier, Daniel A. Bergman
Sublethal Exposure To Two Alkylphenolic Compounds And Their Influence On Development, Growth And Reproductive Behavior Of Crayfish, Steven J. Gauthier, Daniel A. Bergman
Student Summer Scholars Manuscripts
Invertebrates make up much of the world's biological diversity. Their survival is fundamental to the maintenance of all life, and their ubiquitous distribution is useful when using them as biological indicators of pollution. Many invertebrate species are under threat of extinction due to exposure to various chemical pollutants. Crayfish are an important invertebrate that is affected by chemical pollutants, such as pesticide/herbicide runoff and industrial waste effluents. Crayfish are considered keystone species because they are an important resource for other species and consequently influence diversity and abundance. For these reasons, crayfish are important in terms of better understanding the effects …
Population Structure Of The Invasive Round Goby In Lake Michigan, Elizabeth A. Larue, Carl Ruetz Iii, Ryan Thum
Population Structure Of The Invasive Round Goby In Lake Michigan, Elizabeth A. Larue, Carl Ruetz Iii, Ryan Thum
Student Summer Scholars Manuscripts
The recent establishment of the round goby (Neogobius melanostomus), an invasive fish in Lake Michigan, provides a model system to view fine scale evolutionary and ecological processes that can create genetic structure within a population. We used seven nuclear polymorphic microsatellite markers (N = 11-17 per site) and measurements of fish total length, weight, and sex (N = 20-74 per site) on round gobies captured by minnow traps and angling among 12 sites around the entire shore of Lake Michigan to determine if evolutionary processes are present in Lake Michigan by characterizing population structure of the round goby. Specific objectives …