00000nam 2200000zi 4500 9.875015 CaOODSP 20221107164339 m go d f cr ||||||||||| 190617s1981 qucab #o f000 0 eng d CaOODSP eng rda CaOODSP eng fre n-cnm-- n-cn-qu Fs70-8/81-23E-PDF Cleary, Lynn. An assessment of the Gulf of St. Lawrence herring stock complex / by L. Cleary. Cap Diamant, Québec : Direction de la recherche sur les pêches, [1981] 1 online resource (34 pages) : illustrations, map. text txt rdacontent computer c rdamedia online resource cr rdacarrier CAFSAC research document ; 81/23 Digitized edition from print [produced by Department of Fisheries and Oceans]. "Not to be cited without permission of the author." Includes bibliographical references. "Landings from the 4T herring stock declined from 270 000 t in 1970 to 40 500 t in 1980. Recently, the fishery has been sustained mainly by the 1974 year-class. The catch matrix shows a decreasing trend in the proportion of mature fish in the catch (6 years old: 91% in 1969, 22% in 1980), while no particularly strong recruitment is obvious since the 1974 year-class entered the fishery. An analysis of the catch rate data reveals that for both the commercial inshore and offshore fishery and groundfish research cruises catch rates are at a historical low, except for the Pictou Island fall gillnet fishery"--Abstract. Includes abstract in French. gccst Fisheries gccst Surveys Canada. Department of Fisheries and Oceans. CAFSAC research document (Canadian Atlantic Fisheries Scientific Advisory Committee) 81/23 (CaOODSP)9.869616 PDF 12.80 MB https://publications.gc.ca/collections/collection_2019/mpo-dfo/Fs70-8-81-23-eng.pdf