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Ohio Sea Grant College Program
and Stone Laboratory

Ohio Sea Grant and Stone Laboratory


Reprints (RS) are articles published in professional journals written as a result of Sea Grant sponsored projects. Featuring 514 records.

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Genetic connectivity and diversity of walleye (Sander vitreus) spawning groups in the Huron-Erie Corridor

The Huron-Erie Corridor (HEC) connects the upper and lower Great Lakes, providing key fish passage. A century of channelization, dredging, and pollution has led to habitat loss and declining fish numbers. Since 2004, the multi-agency HEC initiative augmented fish spawning habitat at Belle Isle and Fighting Island in the Detroit River, whose populations are examined here. We analyze genetic patterns among seven spawning groups (N = 311) of walleye Sander vitreus, a key fishery species, using nine nuclear DNA microsatellite loci and mitochondrial DNA control region sequences. Results reveal that all spawning groups contained appreciable genetic diversity (microsatellites: HO = 0.72; mtDNA: HD = 0.73) and showed a mixture of connectivity and divergence. Genetic relationships did not fit an isolation by geographic distance hypothesis, with some closely spaced populations being very different. Notably, the Flint River–Lake Huron spawning group was the most divergent, showing no genetic exchange. The Belle Isle and Fighting Island populations markedly differed, with the latter showing some genetic exchange with the Grosse Ile (Detroit River) and the Huron River (northwest Lake Erie) populations to the south. Walleye spawning at Fighting Island experienced no significant change in overall genetic diversity pre- versus post-habitat augmentation, but the allelic frequency changed. Our results comprise an important baseline for future population analyses and habitat assessment of these habitat augmentation areas. Despite habitat degradation and pollution, it appears that historic walleye spawning groups have persisted along the HEC, meriting continued genetic monitoring and further restoration efforts to conserve and enhance this important and diverse fishery.

Amanda E. Haponski, Carol A. Stepien
Pages: 12

Suspended sediment and plankton relationships in Maumee River and Maumee Bay of Lake Erie

Charles E. Herdendorf, Donna D. Larson, David E. Rathke, Laura A. Fay
Year: 1977, Pages: 35

Environmental impact assessment: An aquatic biologist's point of view

Charles E. Herdendorf
Year: 1978, Pages: 5

Understanding Lake Erie's pollution problems

Charles E. Herdendorf
Year: 1978, Pages: 6

Baseline studies for marine education: Experiences related to marine knowledge and attitudes

Rosanne W. Fortner, Thomas G. Teates
Year: 1980, Pages: 8

Fisheries education: From the Great Lakes to the sea

Rosanne W. Fortner, Victor J. Mayer
Year: 1980, Pages: 2

Great Lakes storm surge flood forecasting methods

Keith W. Bedford, J. Steven Dingman, M. D. Prater
Year: 1980, Pages: 9

Marine and aquatic education in Ohio: An update

Rosanne W. Fortner
Year: 1980, Pages: 1

Marine education: Progress and promise

Rosanne W. Fortner, Terry M. Wildman
Year: 1980, Pages: 6

Seasonal variation in the sizes at birth and the first reproduction in cladocera

David A. Culver
Year: 1980, Pages: 8

Teaching about the Great Lakes

Rosanne W. Fortner, Victor J. Mayer
Year: 1980, Pages: 1

You have to have an ocean to teach about the ocean

Rosanne W. Fortner
Year: 1980, Pages: 2

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The Ohio Department of Natural Resources (ODNR) Division of Wildlife and Ohio Sea Grant have just released the Lake Erie Birding Trial Guidebook, a 232-page compilation of 88 popular and less well-known birding spots all along Ohio’s Lake Erie coast, from Ashtabula to Toledo. The book also lists commonly sighted species and noteworthy rarities, park amenities, and online resources for visitors, and includes maps and travel directions. Use this order form to pay by check or money order.