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Science 6 May 1977:
Vol. 196. no. 4290, pp. 649 - 650
DOI: 10.1126/science.196.4290.649
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Articles

Detritus-Based Food Webs: Exploitation by Juvenile Chum Salmon (Oncorhynchus keta)

J. SIBERT 1, T. J. BROWN 1, M. C. HEALEY 1, B. A. KASK 1, and R. J. NAIMAN 2

1 Pacific Biological Station, Environment Canada, Nanaimo, British Columbia V9R 5K6
2 Department of Fisheries and Wildlife, Oregon State University, Corvallis 97331

Harpacticoid copepods are the principal food of chum salmon during the first critical weeks of estuarine life. Heterotrophic food sources are preferentially ingested by harpacticoids. A commercially valuable fisheries resource, usually considered to be planktivorous, is related to a detritus-based, benthically derived food web.

Submitted on November 9, 1976
Revised on December 22, 1976

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Science. ISSN 0036-8075 (print), 1095-9203 (online)