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Distribution of alewives in southeastern Lake Ontario in autumn and winter: a clue to winter mortalities

Transactions of the American Fisheries Society

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Abstract

Alewives Alosa pseudoharengus in the Great Lakes are thought to avoid extreme cold in winter by moving to deep water where the temperature is usually highest because of inverse thermal stratification. Information collected in Lake Ontario during autumn and winter 1981-1984 with an echo sounder and bottom and midwater trawls indicated that many alewives remained at depths above 110 m, regardless of water temperature. Alewives in the Great Lakes that did not descend to greater depths would be exposed to potentially lethal temperatures during cold winters.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Distribution of alewives in southeastern Lake Ontario in autumn and winter: a clue to winter mortalities
Series title:
Transactions of the American Fisheries Society
Volume
118
Issue:
6
Year Published:
1989
Language:
English
Contributing office(s):
Great Lakes Science Center
Description:
p. 687-692
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Transactions of the American Fisheries Society
First page:
687
Last page:
692
Number of Pages:
5