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1 March 2007 Introduction of the Ponto-Caspian Bloody-red Mysid Hemimysis anomala into the Lake Michigan Basin
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Abstract

Hemimysis anomala G.O. Sars, 1907, a mysid species native to the Ponto-Caspian region, was discovered during fall 2006 in the Lake Michigan basin. Large numbers of individuals formed aggregations (averaging 1,540 ± 333 individuals/m2) in a shallow docking basin connected to the channel linking Lake Michigan and Muskegon Lake. The population included females (63%), males (35%), and juveniles (2%). The global invasion pattern in H. anomala is similar to that in another Ponto-Caspian peracarid crustacean, Echinogammarus ischnus. As with E. ischnus, the expansion of H. anomala in North America is anticipated.

Steven A. Pothoven, Igor A. Grigorovich, Gary L. Fahnenstiel, and Mary D. Balcer "Introduction of the Ponto-Caspian Bloody-red Mysid Hemimysis anomala into the Lake Michigan Basin," Journal of Great Lakes Research 33(1), (1 March 2007). https://doi.org/10.3394/0380-1330(2007)33[285:IOTPBM]2.0.CO;2
Received: 7 December 2006; Accepted: 17 December 2006; Published: 1 March 2007
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