Chatham Sound shrimp survey and resulting management actions, August to September, 1998 / J.A. Boutillier, J.A. Bond, H. Nguyen, and D. Gueret.: Fs97-4/2496E-PDF

"This document forms part of a series of manuscripts that detail the assessment and management actions undertaken in the shrimp trawl fisheries off the Pacific coast of Canada in 1998. An area-swept shrimp trawl survey was undertaken in Chatham Sound in August and September 1998. The DFO research vessel Caligus was used to complete the survey, which covered portions of Pacific Fisheries Management Areas (PFMA) 3 and 4. The fisheries in this area are primarily for smooth pink shrimp, Pandalus jordani; northern pink shrimp, Pandalus borealis eous; and sidestripe shritnp, Pandalopsis dispar. Biomass indices of shrimp by species were determined in select trawlable areas of Chatham Sound. While the collection of data on the shrimp (including prawns), halibut and eulachon catches were priorities, catch information on all species was collected. Catches of prawns and halibut were minor in the area. However, because of concerns about the status of eulachon populations, biomass indices of eulachon stocks on the shrimp grounds were also calculated. A fixed exploitation rate of 33% was applied to the biomass estimates of shrimp by species. Catch ceilings, quotas, and other management actions that resulted from the survey are discussed. These survey data are the first in what is hoped to be a long time series of fishery independent survey indices which will be combined with logbook data, biological sampling and other fishery data to provide information as to the status of the stocks. Until a long-term database is available, the initial biomass indices will be used as absolute estimates for the purpose of setting quotas"--Abstract, page iii.

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