00000nam 2200000zi 4500 9.956940 CaOODSP 20251031093524 m o d f cr mn||||||||| 251031e198905##bccab ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre n-cn-bc pn----- x7x8 Fs97-4/2072E-PDF Fs97-4/2072E Foucher, R. P., author. The spawning season of Pacific cod on the west coast of Canada / by R.P. Foucher, and S.J. Westrheim (ret.). Nanaimo, British Columbia : Department of Fisheries and Oceans, Biological Sciences Branch, Pacific Biological Station, May 1990. ©1990 1 online resource (iii, 25 pages) : illustrations, maps. text txt rdacontent computer c rdamedia online resource cr rdacarrier Canadian manuscript report of fisheries and aquatic sciences, 0706-6473 ; no. 2072 Digitized edition from print [produced by Department of Fisheries and Oceans]. Includes bibliographical references (pages 5-6). "The spawning season of Pacific cod in British Columbia is primarily January-March, based on 46,106 trawl-caught specimens sampled during 1976-85 at processing plants. Gonad development for both sexes was similar among four areas, but occurred later in the northernmost area (north Hecate Strait). Spawning was apparently determinate and essentially complete by May in north Hecate Strait, and by April elsewhere. Considerable variability was found among hauls and among years within months. A maximum likelihood technique used to fit a curve to the proportion spawned by day of year showed that there was no overlap among the four areas in parameters which describe the rate and timing of the point at which 50% had spawned. Elsewhere in the north Pacific Ocean, cod spawning was also determinate, the season was relatively short and only slightly later in the higher latitudes. In contrast, Atlantic cod are batch spawners, and the seasons are protracted in all areas"--Abstract, page iii. Includes abstracts in English and French. Pacific cod Spawning British Columbia Pacific Coast. Pacific cod British Columbia Pacific Coast Generative organs. Morue du Pacifique Frai Colombie-Britannique Pacifique, Côte du. Morue du Pacifique Colombie-Britannique Pacifique, Côte du Organes génitaux. Canada. Department of Fisheries and Oceans, issuing body. Pacific Biological Station (1972- ), issuing body. Canadian manuscript report of fisheries and aquatic sciences ; no. 2072. (CaOODSP)9.505211 PDF 763 KB https://publications.gc.ca/collections/collection_2025/mpo-dfo/fs97-4/Fs97-4-2072-eng.pdf