00000nam 2200000za 4500 9.813485 CaOODSP 20221107141541 cr ||||||||||| 160823s2016 bccdb #ob f000 0 eng d 978-0-660-04952-6 978-0-660-04951-9 CaOODSP eng eng fre n-cn-bc Fs97-4/3095E-PDF Fs97-4/3095E MacConnachie, S. Results from the September 2015 CCGS Neocaligus shrimp trawl survey in Chatham Sound British Columbia with emphasis on Eulachon (Thaleichthys pacificus) [electronic resource] / by S. MacConnachie, K. Fong, and T.W. Therriault. Nanaimo, British Columbia : Fisheries and Oceans Canada, 2016. v, 21 p. : map, graphs Canadian manuscript report of fisheries and aquatic sciences, 1488-5387 ; 3095 Includes bibliographical references. "Multi-species surveys are fundamental fisheries assessment tools that can be used to inform a number of Fisheries and Oceans Canada (DFO) objectives including stock assessment and species at risk questions. A shrimp survey was conducted in Chatham Sound (PFMA 3 and 4) from September 13-18, 2015 primarily to inform shrimp stock assessment in the Prince Rupert District (PRD). Nass/Skeena Eulachon have been assessed by COSEWIC as a species of special concern and the Eulachon Technical Committee of the Skeena Area Marine Research Collaboration group identified the need for additional Eulachon data. Thus, biological sampling of Eulachon was conducted during the survey, including tissue sampling to be used to genetically determine stock composition. Eulachon were observed in all 42 tows and comprised 12.48% of the cumulative catch by weight. A bi-modal length-frequency distribution confirms two dominant Eulachon age classes were present in Chatham Sound. Microsatellite analysis indicates that 45.6% of the fish sampled originated from the Nass/Skeena system with 45.6% representing Eulachon from Central Coast populations. Continued monitoring of Eulachon dynamics in this area is important to inform the recovery potential of this at-risk species"--Abstract. Issued also in printed form. Text in English, abstract in English and French. gccst Crustaceans gccst Fisheries Fong, K. Therriault, T. W. (Thomas Wayne), 1970- Canada. Department of Fisheries and Oceans. Results from the September 2015 CCGS Neocaligus shrimp trawl survey in Chatham Sound British Columbia with emphasis on Eulachon (Thaleichthys pacificus) / (CaOODSP)9.813484 Canadian manuscript report of fisheries and aquatic sciences, 1488-5387 ; 3095. (CaOODSP)9.505211 PDF 709 KB https://publications.gc.ca/collections/collection_2016/mpo-dfo/Fs97-4-3095-eng.pdf