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Effects of fish wheels on fall chum salmon (Oncorhynchus keta) : non-esterified fatty acids and plasma indices of stress

Dates

Year
2003

Citation

Cleary, P. M., 2003, Effects of fish wheels on fall chum salmon (Oncorhynchus keta) : non-esterified fatty acids and plasma indices of stress: University of Alaska.

Summary

The effect of tagging and capture on plasma concentrations of cortisol, glucose, lactate, chloride, and non-esterified fatty acids (NEFA) in chum salmon was investigated. Adult chum salmon were captured in August-September 2000 and 2001 with a fish wheel on the lower Kantishna River. Tagged and untagged fish were subsequently captured on the lower Toklat River and sampled for blood. Tagged fish (males and females) at the Toklat recovery fish wheels had lower (P < 0.04) plasma cortisol concentrations than untagged fish. Glucose concentrations were lower (P = 0.03) in tagged than untagged males but did not differ between tagged and untagged females. Lactate and chloride concentrations did not differ between tagged and untagged fish. [...]

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Author :
Cleary, P. M.
Publisher :
University of Alaska

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