Effect of predation by juvenile Pacific salmon on marine harpacticoid copepods. I. Comparisons of patterns of copepod mortality with patterns of salmon consumption

Abstract

Examined the impact of predation by juvenile chum Oncorhynchus keta and pink O. gorbuscha salmon on harpacticoid copepods inhabiting a shallow subtidal seagrass Zostera marina bed on Roberts Bank, British Columbia. Juvenile salmon mainly consumed three harpacticoid copepod species (>75% by number in gut contents in both years): Harpacticus uniremis, Tisbe cf. furcata and Zaus aurelii. Temporal patterns of copepod mortality, however, generally did not correspond to temporal patterns of salmonid consumption. -from Author