00000nam 2200000zi 4500 9.890429 CaOODSP 20240611125811 m o d f cr cn||||||||| 200813t20202020oncab ob f000 0 eng d 9780660357928 CaOODSP eng rda CaOODSP eng eng fre n-cn-bc pn----- x9y1 Fs97-6/3396E-PDF Lacko, Lisa C., author. Summary of the annual 2018 and 2019 sablefish (Anoplopoma fimbria) trap surveys, October 9 - November 19, 2018 and October 8 - November 25, 2019 / by Lisa C. Lacko, Schon M. Acheson and Brendan M. Connors. [Ottawa] : Fisheries and Oceans Canada = Pêches et océans Canada, 2020. ©2020 1 online resource (vii, 66 pages) : illustrations (some colour), colour maps. text txt rdacontent computer c rdamedia online resource cr rdacarrier Canadian technical report of fisheries and aquatic sciences, 1488-5379 ; 3396 Includes bibliographical references (page 66). "This document describes sampling activities and summarizes results from the 2018 and 2019 British Columbia sablefish research and assessment surveys. These annual surveys utilized the same sampling strategies at stratified random (StRS) sites and traditional inlet sites. The random component was comprised of StRS sets at five depth-stratified areas and the traditional component employed standardized sets at four inlet localities on the mainland. In total, 58,415 sablefish were caught in 2018, of which 5,741 were used for biological samples and 10,965 were tagged and released. In 2019, a total of 78,836 sablefish were caught, of which 5,659 were used for biological samples and 12,042 were tagged and released. Catch per unit effort (CPUE) is an important result from this survey as it is used to infer population trends. In most recent years, survey data from StRS sets show increasing trends in both mean weight and numbers of fish per trap. CPUE at traditional inlet sites have varied in a predictable manner over time with peak CPUE occurring every 5-8 years and increasing to record levels in 2018 and 2019. At both StRS and traditional inlet sites, the average weight of sablefish in 2018 and 2019 reached record mean lows due to large numbers of small fish"--Abstract, page vi. Includes abstracts in English and French. Sablefish British Columbia Pacific Coast. Fish surveys British Columbia Pacific Coast. Morue charbonnière Colombie-Britannique Pacifique, Côte du. Inventaires ichtyologiques Colombie-Britannique Pacifique, Côte du. Canada. Department of Fisheries and Oceans, issuing body. Pacific Biological Station (1972- ), issuing body. Canadian technical report of fisheries and aquatic sciences ; 3396. (CaOODSP)9.504449 PDF 8.20 MB https://publications.gc.ca/collections/collection_2020/mpo-dfo/Fs97-6-3396-eng.pdf