00000cam 2200000za 4500 9.804719 CaOODSP 20260219114423 cr ||||||||||| 150406s1998 oncd ob f000 0 eng d CaOODSP eng eng fre n-cn--- Fs70-1/1998-03E-PDF Swain, D. P. Relative fishing efficiency for witch flounder of vessels and gears used in the August and September bottom-trawl surveys in the Gulf of St. Lawrence [electronic resource] / Douglas P. Swain, Gloria A. Poirier and Rod Morin. Ottawa : Fisheries and Oceans Canada, 1998. 18 p. : fig., graphs, tables. Canadian Stock Assessment Secretariat research document, 1480-4883 ; 98/03 Includes bibliographical references (p. 7). The purpose of this report is to test for differences between fishing vessels and gears in fishing efficiency for witch flounder after adjusting for diurnal variation in their catchability. Two comparative fishing experiments are analyzed: a 1992 experiment conducted in the southern Gulf of St. Lawrence between the vessels Lady Hammond and Alfred Needler, both using a Western IIA trawl, and a 1990 experiment conducted in the northern Gulf between the Lady Hammond using a Western IIA trawl and the Alfred Needler using a URI trawl. Fishing efficiency was estimated using generalized linear models, assuming a Poisson error distribution. gccst Fishing ships gccst Fisheries technology gccst Fisheries resources gccst Fisheries management Poirier, G. A. (Gloria A.) Morin, Roderick, 1950- Canada. Department of Fisheries and Oceans. Canada. Canadian Stock Assessment Secretariat. Canadian Stock Assessment Secretariat research document, 1480-4883 ; 98/03 (CaOODSP)9.507740 PDF 848 KB https://publications.gc.ca/collections/collection_2015/mpo-dfo/Fs70-1-1998-03-eng.pdf