00000nam 2200000zi 4500 9.876639 CaOODSP 20221107164748 m o d f cr |n||||||||| 190718s1980 nfca #ob f000 0 eng d CaOODSP eng rda CaOODSP eng fre n-cn-nf Fs70-8/80-53E-PDF Pitt, Thomas Kenton, author. American plaice in subdivision 3Ps, an assessment update / by T.K. Pitt. St. John's, Newfoundland : Fisheries & Oceans, Northwest Atlantic Fisheries Center, [1980] 1 online resource (25 pages) : illustrations. text txt rdacontent computer c rdamedia online resource cr rdacarrier CAFSAC research document ; 80/53 "Not to be cited without permission of author." Includes bibliographical references (page 4). "An analytical assessment update was attempted, however, there was difficulty arriving at precise assessment parameters. Partial recruitment was calculated by two methods (a) ration of commercial to research vessel catches at age and (b) average Fs from cohort runs 1973-79. Using the two methods and the different terminal F's, and F0.1 associated with them indicated removal levels in 1981 of 9.000 using (a) to 5,000 using (b). Because of the uncertainty of the parameters, and because of the apparent stable condition of the stocks it appears prudent to leave the TAC for 1981 at 5,000 the average total catch since 1974"--Abstract. Includes abstract in French. gccst Fisheries gccst Surveys Canada. Department of Fisheries and Oceans. Newfoundland Region. Research and Resource Services Directorate‏. Northwest Atlantic Fisheries Centre (Canada) CAFSAC research document (Canadian Atlantic Fisheries Scientific Advisory Committee) 80/53 (CaOODSP)9.869616 PDF 1.48 MB https://publications.gc.ca/collections/collection_2019/mpo-dfo/Fs70-8-80-53-eng.pdf