Swimming performance of young lake trout after chronic exposure to PCBs and DDE

Rottiers, Donald V.; Bergstedt, Roger A.

Abstract:

Swimming performance was measured in fry of lake trout (Salvelinus namaycush) exposed to PCB‘s, DDE, and a combination of these two contaminants in both food and water at concentrations equal to, and 5 and 25 times higher than, levels found in Lake Michigan water and plankton. Fry were tested after about 50, 110, and 165 days of exposure. We measured swimming performance by forcing the fry to swim through a continuous series of incrementally increased velocities until the fish were exhausted. Although we observed significant differences in swimming performance between a few test groups, we detected no relation between swimming performance of the fry and exposure to PCB‘s or DDE, or both, at the concentrations tested. Inasmuch as swimming performance apparently was not affected by the levels of contamination by PCB‘s and DDE in Lake Michigan, impairment of swimming by these contaminants cannot account for the failure of lake trout reproduction in Lake Michigan.

Genre:

Federal Government Series

ProdID:

2002341

Citation Author:

Rottiers, Donald V.; Bergstedt, Roger A.

Citation Contributing Office:

Great Lakes Science Center

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Citation Language:

English

Citation Larger Work Title:

Chlorinated hydrocarbons as a factor in the reproduction and survival of lake trout (Salvelinus namaycush) in Lake Michigan

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Citation Phsyical Description:

p. 23-28

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Citation Publisher:

U.S. Fish and Wildlife Service

Citation Series:

Technical Paper

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Citation Series Number:

105

Citation Search Results Text:

Swimming performance of young lake trout after chronic exposure to PCBs and DDE; 1981; Federal Government Series; TP; 105; Chlorinated hydrocarbons as a factor in the reproduction and survival of lake trout (Salvelinus namaycush) in Lake Michigan; Rottiers, Donald V.; Bergstedt, Roger A.