Range Expansion of the Exotic Zooplankter Cercopagis pengoi (Ostroumov) into Western Lake Erie and Muskegon Lake |
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| Affiliation: | 1. Department of Food Safety and Infection Biology, Norwegian University of Life Sciences, P.O. Box 5003, Campus Adamstuen, NO-1432 Ås, Norway;2. Sokoine University of Agriculture, Department of Veterinary Medicine and Public Health, P.O. Box 3021, Morogoro, Tanzania;3. Sokoine University of Agriculture, Department of Physical Sciences, P.O. Box 3038, Solomon Mahlangu Campus, Morogoro, Tanzania;4. Tanzania Association of Public, Occupation and Environmental Health Experts (TAPOHE), P.O. Box 732, Arusha, Tanzania;5. The Norwegian Veterinary Institute (NVI), P.O. Box 750 Sentrum, N-0106 Oslo, Norway;6. Norwegian Institute for Water Research (NIVA), Gaustadallèen 21, N-0349 Oslo, Norway;1. College of Resources and Environment Science of Xinjiang University, Urumqi 830046, China;2. Key Laboratory of Xinjiang Arid Land Lake Environment and Resource, Xinjiang Normal University, Urumqi830054, China;3. Xinjiang Meteorological Observatory, Urumqi 830002, China |
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| Abstract: | Previously reported from Lakes Ontario and Michigan, the nonindigenous zooplankter Cercopagis pengoi was found for the first time in western Lake Erie, the Detroit River, and Muskegon Lake, Michigan, during summer 2001. A native of the Ponto-Caspian region, C. pengoi is currently expanding its range in North America. Analysis of mitochondrial gene ND5 sequences confirmed that the Lake Erie haplotype is identical to that reported previously from Lakes Ontario and Michigan and the Finger Lakes, New York. These findings support the hypothesis that C. pengoi's range expansion in the Great Lakes likely resulted from inter-lake transfer of ballast water, rather than from additional introductions from European locations. Pleasure-craft traffic operating between Lake Michigan and Muskegon Lake is likely responsible for this inland transfer of Cercopagis, a trend that likely will increase due to human activities. |
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