00000nam 2200000zi 4500 9.949352 CaOODSP 20250530144538 m o d f cr mn||||||||| 250320e197903##bccab ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre n-cn-bc pn----- x7x7 Fs97-4/1516E-PDF Fs97-4/1516 Leaman, B. M., 1949- author. A pilot tagging study of Pacific cod in the Strait of Georgia, January 17-February 2, 1978 / by B.M. Leaman, D.A. Nagtegaal, and J.E. Smith. Nanaimo, British Columbia : Department of Fisheries and the Environment, Fisheries and Marine Service, Resource Services Branch, Pacific Biological Station, March 1979. ©1979 1 online resource (iii, 57 pages) : illustration, maps. text txt rdacontent computer c rdamedia online resource cr rdacarrier Fisheries and Marine Service manuscript report, 0701-7618 ; no. 1516 Digitized edition from print [produced by Department of Fisheries and Oceans]. Includes bibliographical references (page 7). "A pilot study was conducted to develop techniques for the tagging of juvenile Pacific cod, prior to a major project on the west coast of Vancouver Island. The study concentrated on techniques for handling, holding and tagging pre-recruit, juvenile fish. Several viable operations were developed to decrease mortalities of tagged fish; swim bladder deflation and holding in recovery tanks for a minimum of one hour prior to release were major factors in increasing survival. Efforts were also directed toward estimating initial, traumatic tagging mortality in order to derive more accurate figures for the number of viable, tagged fish at large. Experiments indicated that such mortality was approximately 20% of tagged fish. Nineteen percent of total released fish were recovered to December 31, 1978. Double tagging of 10% of the fish indicated no significant shedding of the standard anchor tag. Differential recovery percentages of fish, by condition at release, infers that even among fish judged suitable for release, minor injuries may lead to errors in analysis of recoveries"--Abstract, page iii. Includes abstracts in English and French. Pacific cod Marking Georgia, Strait of (B.C. and Wash.) Morue du Pacifique Marquage Géorgie, Détroit de (C.-B. et Wash.) Canada. Fisheries and Marine Service, issuing body. Pacific Biological Station (1972- ), issuing body. Manuscript report (Canada. Fisheries and Marine Service) no. 1516. (CaOODSP)9.924185 PDF 1.07 MB https://publications.gc.ca/collections/collection_2025/mpo-dfo/fs97-4/Fs97-4-1516-eng.pdf