00000nam 2200000zi 4500 9.950453 CaOODSP 20250528082254 m o d f cr mn||||||||| 250425e198302##bccab ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre n-cn-bc pn----- x5x8 Fs97-4/1681E-PDF Fs97-4/1681 Westrheim, S. J., author. Principal prey species and periodicity of their incidence in stomachs of trawl-caught Pacific cod (Gadus macrocephalus), rock sole (Lepidopsetta bilineata), and petrale sole (Eopsetta jordani) landed in British Columbia, 1950-80 / by S.J. Westrheim and W.R. Harling. Nanaimo, British Columbia : Department of Fisheries and Oceans, Resource Services Branch, Pacific Biological Station, February 1983. ©1983 1 online resource (iv, 38 pages) : illustrations, maps. text txt rdacontent computer c rdamedia online resource cr rdacarrier Canadian manuscript report of fisheries and aquatic sciences, 0706-6473 ; no. 1681 Digitized edition from print [produced by Department of Fisheries and Oceans]. Includes bibliographical references (page 7). "Prey incidence was compiled from port liaison officers' notes recorded while collecting length-frequency samples of Pacific cod (Gadus macrocephalus), rock sole (Lepidopsetta bilineata), and petrale sole (Eopsetta jordani in trawl landings originating from three major offshore regions of British Columbia during 1950-80. Principal prey species were sandlance (Ammod tes hexapterus), herring (Clupea harengus pallasi), "shrimp" (assorted Crustacea) and sablefish (Anoplopoma fimbria), the latter only in Pacific cod Stomachs. Sandlance was an important prey species for all three predator species and in all three offshore regions. Incidence periodicity was demonstrated for sandlance (X̄ = 4.2y); herring off the west coast of Vancouver Island (X̄ = 3.9y); and sablefish in Hecate Strait (7-9 y)"--Abstract, page iii. Includes abstracts in English and French. Pacific cod Food British Columbia Pacific Coast. Rock sole Food British Columbia Pacific Coast. Petrale sole Food British Columbia Pacific Coast. Predation (Biology) British Columbia Pacific Coast. Morue du Pacifique Alimentation Colombie-Britannique Pacifique, Côte du. Fausse limande du Pacifique Alimentation Colombie-Britannique Pacifique, Côte du. Eopsetta jordani Alimentation Colombie-Britannique Pacifique, Côte du. Prédation (Biologie) Colombie-Britannique Pacifique, Côte du. Canada. Department of Fisheries and Oceans, issuing body. Pacific Biological Station (1972- ), issuing body. Canadian manuscript report of fisheries and aquatic sciences ; no. 1681. (CaOODSP)9.505211 PDF 1.67 MB https://publications.gc.ca/collections/collection_2025/mpo-dfo/fs97-4/Fs97-4-1681-eng.pdf