| Abstract: | Young-of-the-year alewives, Alosa pseudoharengus, with extremely shortened caudal fins were observed at four locations in southern Lake Michigan between 1964 and 1968. Some of the fins appeared stunted or underdeveloped, but microscopic examination revealed a deterioration of the fins and not an ontogenetic abnormality. Deterioration of the caudal fin was frequently accompanied by degeneration of the dorsal and anal fins.
Degenerate fins were not found on other species nor on older alewives, with the exception of one known yearling alewife at Waukegan and possibly a few of the larger fish at Milwaukee. |
| Genre: | Article |
| ProdID: | 1000091 |
| Citation Author: | Brown, Edward H. Jr.; Norden, Carroll R. |
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| Citation End Page: | 769 |
| Citation Issue: | 4 |
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| Citation Language: | English |
| Citation Larger Work Title: | Copeia |
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| Citation Number Of Pages: | 3 |
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| Citation Phsyical Description: | p. 766-769 |
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| Citation Search Results Text: | Fin degeneration of young-of-the-year Alosa pseudoharengus (Clupeidae) in southern Lake Michigan; 1970; Article; Journal; Copeia; Brown, Edward H. Jr.; Norden, Carroll R. |
| Citation Start Page: | 766 |
| Citation Volume: | 1970 |
| Citation Year: | 1970 |
| Type: | citation/reference |
| Text: | Fin degeneration of young-of-the-year Alosa pseudoharengus (Clupeidae) in southern Lake Michigan; 1970; Article; Journal; Copeia; Brown, Edward H. Jr.; Norden, Carroll R. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Thu, 1 Jan 1970 00:00 -0600 |
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