00000nam 2200000za 4500 9.842638 CaOODSP 20221107152351 cr ||||||||||| 170829s2017 oncbd obs f000 0 eng d CaOODSP eng eng fre n-cn-qu n-cnm-- Fs70-5/2017-050E-PDF Benoît, H. P. (Hugues Pascal) Trends in the biomass, spatial distribution and size composition of snow crab (Chionoecetes opilio) based on the multi-species bottom trawl survey of the southern Gulf of St. Lawrence, 1980-2016 [electronic resource] / H.P. Benoît. Ottawa : Fisheries and Oceans Canada, Canadian Science Advisory Secretariat, 2017. v, 14 p. : col. charts, maps (some col.) Canadian Science Advisory Secretariat (CSAS), research document, 1919-5044 ; 2017/050, Gulf Region Cover title. “July 2017.” Includes bibliographical references (p. 4-5). “The research vessel bottom-trawl survey of the southern Gulf of St. Lawrence undertaken each September (RV survey) provides reliable standardized indices of biomass, spatial distribution and habitat use of commercial-sized male snow crab (Chionoecetes opilio) for 2001 to 2016 and of all snow crab (aggregated index) for 1980 to 2016. This document provides an update for these indices based on the results of the 2016 RV survey. This information was provided in support of the regional snow crab assessment process that took place in Moncton, NB on January 25 and 26, 2017. Of particular note, the RV survey confirmed an important increase in the biomass of commercial-sized adult male snow crab in 2016 as was also estimated by the dedicated snow crab survey. Also, RV surveys since 2012 had captured unusually high numbers of small crabs (≤15 mm) in several areas of the southern Gulf of St. Lawrence, whereas catches in 2016 were considerably lower and around values observed in the late 2000s"--Abstract, p. iv. Includes abstract in French. gccst Crustaceans gccst Fishing area gccst Fisheries management Canada. Department of Fisheries and Oceans. Canadian Science Advisory Secretariat. Research document (Canadian Science Advisory Secretariat) 1919-5044 ; 2017/050, Gulf Region (CaOODSP)9.507396 PDF 6.43 MB https://publications.gc.ca/collections/collection_2017/mpo-dfo/Fs70-5-2017-050-eng.pdf