00000nam 2200000zi 4500 9.882599 CaOODSP 20221107170336 m o d f cr |n||||||||| 191203s1986 nscb ob f000 0 eng d CaOODSP eng rda CaOODSP eng fre n-cn-ns Fs70-8/86-56E-PDF Rowell, T. W., author. Distribution, abundance, and preliminary estimates of production potential for the ocean quahaug (Arctica islandica) and Stimpson's surf clam (Spisula polynyma) on the Scotian Shelf / by T.W. Rowell and T. Amaratunga. Halifax, Nova Scotia : Fisheries Research Branch, Halifax Fisheries Research Laboratory, Department of Fisheries and Oceans, Scotia-Fundy Region, [1986] 1 online resource (21 pages) : maps. text txt rdacontent computer c rdamedia online resource cr rdacarrier CAFSAC research document ; 86/56 "Not to be cited without permission of the authors." Includes bibliographical references (pages 10-11). "Both the ocean quahaug (Arctica islandica) and Stimpson's surf clam (Spisula polynyma) resources of the Scotian Shelf appear to have potential for future exploitation. Six areas, totalling 2,452 km 2 , on Western and Sable Island Banks had a mean quahaug density of 0.256 kg/m 2 and a biomass on the order of 628 kilotons. Additionally, two areas, totalling 2,298 km 2 , on Banquereau Bank had a mean surf clam density of 0.244 kg/m 2 and a biomass on the order of 561 kilotons. Mean densities of ocean quahaugs and Stimpson's surf clams on the remaining areas of these banks were 0.042 and 0.034 kg/m 2 respectively and unlikely to support commercial activity. Using instantaneous natural mortality (M) rates of 0.020 and 0.043 for ocean quahaugs, a MSY of between 6,277--13,495 t was derived. For Stimpson's surf clam a MSY of 16,821 t was derived using M= 0.060"--Abstract. Includes abstract in French. Ocean quahog Scotian Shelf. Arctic surfclam Scotian Shelf. Quahog nordique Néo-écossaise, Plateforme. Mactre de Stimpson Néo-écossaise, Plateforme. Canada. Department of Fisheries and Oceans. Halifax Laboratory. Canadian Atlantic Fisheries Scientific Advisory Committee. CAFSAC research document (Canadian Atlantic Fisheries Scientific Advisory Committee) 86/56 (CaOODSP)9.869616 PDF 1.15 MB https://publications.gc.ca/collections/collection_2019/mpo-dfo/Fs70-8-86-56-eng.pdf