00000nam 2200000zi 4500 9.872852 CaOODSP 20221107163742 m o d f cr ||||||||||| 190513s1981 quca|||#ob f000 0 eng d CaOODSP eng rda CaOODSP eng fre n-cn-qu Fs70-8/81-1E-PDF Bailey, Richard, author. Catch prediction for the snow crab (Chionoecetes opilio O. Fabricius) fishery in the southwestern Gulf of St. Lawrence : a problem of predation by cod (Gadus morhua L.) / by Richard Bailey. Québec, P.Q. : Division des Sciences halieutiques, Direction de la Recherche, Pêches et Océans, [1981]. 1 online resource (12 pages). text txt rdacontent computer c rdamedia online resource cr rdacarrier CAFSAC research document ; 81/1 Caption title. Digitized edtion from print [produced by Department of Fisheries and Oceans]. "Not to be cited without permission of the author." Includes bibliographical reference (page 8). "Cod being an important predator of juvenile snow crabs, it was hypothesized that the recruitment of crabs to the fishery is negatively dependent on previous abundance of cod. An exponential equation was fitted by regression to various average cod (4TVn) biomass and crab catches, from the southwestern Gulf of St. Lawrence, using an initial lag time of 6 years (approx. age of recruiting crabs). The strongest relation (r 2 = 0.91) was found when snow crab catch in a given year was correlated with the average biomass of cod present 3 to 6 years before. Cod appears to be a major controlling factor of snow crab recruitment to the fishery and its steady increase in abundance since 1976 could suggest a possible reduction in the catches of snow crab from the southwestern Gulf in a near future."--Abstract. Includes abstract in French. gccst Fisheries gccst Salt water fish gccst Crustaceans Canada. Department of Fisheries and Oceans. CAFSAC research document (Canadian Atlantic Fisheries Scientific Advisory Committee) 81/1 (CaOODSP)9.869616 PDF 670 KB https://publications.gc.ca/collections/collection_2019/mpo-dfo/Fs70-8-81-1-eng.pdf