Fin degeneration of young-of-the-year Alosa pseudoharengus (Clupeidae) in southern Lake Michigan
Copeia
By: Edward H. Brown Jr. and Carroll R. Norden
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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.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Fin degeneration of young-of-the-year Alosa pseudoharengus (Clupeidae) in southern Lake Michigan |
| Series title | Copeia |
| DOI | 10.2307/1442324 |
| Volume | 1970 |
| Issue | 4 |
| Year Published | 1970 |
| Language | English |
| Publisher | American Society of Ichthyologists and Herpetologists (ASIH) |
| Contributing office(s) | Great Lakes Science Center |
| Description | 4 p. |
| First page | 766 |
| Last page | 769 |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |