| Abstract: | The Eurasian ruffe, Gymnocephalus cernuus, was collected from the lower St. Louis River, Lake Superior‘s westernmost tributary, in late summer 1987. This is the first known occurrence of the ruffe in North America. The likely vector for this species was ballast water of a transoceanic vessel dumped into the international port of Duluth-Superior located on the lower end of the St. Louis River. The ruffe is increasing in abundance and expanding its range to other tributaries and nearshore areas of Lake Superior. |
| Genre: | Article |
| ProdID: | 1000776 |
| Citation Author: | Pratt, Dennis M.; Blust, William H.; Selgeby, James H. |
| Citation Contributing Office: | Great Lakes Science Center |
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| Citation End Page: | 1618 |
| Citation Issue: | 8 |
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| Citation Language: | English |
| Citation Larger Work Title: | Canadian Journal of Fisheries and Aquatic Sciences |
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| Citation Number Of Pages: | 2 |
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| Citation Phsyical Description: | p. 1616-1618 |
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| Citation Search Results Text: | Ruffe, Gymnocephalus cernuus: Newly introduced in North America; 1992; Article; Journal; Canadian Journal of Fisheries and Aquatic Sciences; Pratt, Dennis M.; Blust, William H.; Selgeby, James H. |
| Citation Start Page: | 1616 |
| Citation Volume: | 49 |
| Citation Year: | 1992 |
| Type: | citation/reference |
| Text: | Ruffe, Gymnocephalus cernuus: Newly introduced in North America; 1992; Article; Journal; Canadian Journal of Fisheries and Aquatic Sciences; Pratt, Dennis M.; Blust, William H.; Selgeby, James H. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Wed, 1 Jan 1992 00:00 -0600 |
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