00000nam 2200000zi 4500 9.895586 CaOODSP 20221107174052 m o d f cr bn||||||||| 210122s1987 nscd o f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre n-cn-nf Fs70-8/87-33E-PDF Bowering, W. R. (William Raymond), 1950- author. An update of the status of the witch flounder resource in NAFO divisions 2J, 3K and 3L / by W.R. Bowering. [Dartmouth, N.S.] : Canadian Atlantic Fisheries Scientific Advisory Committee ; St. John's, Newfoundland : Department of Fisheries and Oceans, Science Branch, [1987?] 1 online resource (17 pages) : graphs. text txt rdacontent computer c rdamedia online resource cr rdacarrier CAFSAC research document ; no. 87/33 Cover title. "Not to be cited without permission of the authors." "Catches of witch flounder in Div. 2J, 3K and 3L peaked at about 24,000 t in 1973, declined almost steadily to 1980 at about 3500 t, and remained stable to 1985. The 1986 catch of 1300 t is the lowest reported catch in more than 20 years. A biomass estimate for 1986 for the three divisions combined as determined from fall surveys indicates a minimum trawlable biomass of 25,000 t which is low compared to recent years. Age compositions from both research and commercial samples indicate a stable age structure in recent years at low levels of fishing pressure and despite this the age span has not increased. Long-term estimates of mortality suggest that fishing mortality in the late 1970's was probably 2-3 times the F0.1 level of 0.30"--Abstract, page 2. Includes abstract and series statement in French. Glyptocephalus cynoglossus fisheries Newfoundland and Labrador. Fish stock assessment Newfoundland and Labrador. Plie grise Pêche commerciale Terre-Neuve-et-Labrador. Ressources halieutiques Évaluation Terre-Neuve-et-Labrador. Canadian Atlantic Fisheries Scientific Advisory Committee, issuing body. Canada. Department of Fisheries and Oceans. Science, issuing body. CAFSAC research document (Canadian Atlantic Fisheries Scientific Advisory Committee) no. 87/33. (CaOODSP)9.869616 PDF 1.20 MB https://publications.gc.ca/collections/collection_2021/mpo-dfo/fs70-8/Fs70-8-87-33-eng.pdf