Abstract
Abstract A population of humpback shrimp inhabiting Drury Inlet, British Columbia, was surveyed in November 2001 and March 2002 with trawl and trap fishing gear. Trawl catches were more representative of the shrimp population than trap catches in terms of age-structure and sex-stage proportions. Shrimp, as much as 81.4 tons, lived on a variety of benthic habitats, including deeper trawlable muddy and shallower untrawlable rocky areas. The shrimp population was comprised mainly of small age 1 shrimp (58% to 66%); the proportion that would be targeted by commercial fishers (i.e., larger older shrimp) was small (3% to 8%). Individual shrimp in the Drury Inlet population were generally smaller than shrimp reported from other areas of the BC coast. Females had not released their eggs in mid November and most (75%) were egg-bearing in mid March. Many more shrimp were in the transitional stage in March (24.9%) compared with November (0.4%). Shrimp numbers declined in trap catches at depths greater than 60 m. In ...
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