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

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Science  06 May 1977:
Vol. 196, Issue 4290, pp. 649-650
DOI: 10.1126/science.196.4290.649


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.