Portal de Periódicos da CAPES

Spiny Dogfish Predation on Chinook and Coho Salmon and the Potential Effects on Hatchery-Produced Salmon

1992; Wiley; Volume: 121; Issue: 4 Linguagem: Inglês

10.1577/1548-8659(1992)121 2.3.co;2

1548-8659

Richard J. Beamish, Barbara L. Thomson, Gordon A. McFarlane,

Mathematical and Theoretical Epidemiology and Ecology Models

Transactions of the American Fisheries SocietyVolume 121, Issue 4 p. 444-455 Articles Spiny Dogfish Predation on Chinook and Coho Salmon and the Potential Effects on Hatchery-Produced Salmon Richard J. Beamish, Richard J. Beamish Department of Fisheries and Oceans, Biological Sciences Branch, Pacific Biological Station, Nanaimo, British Columbia, V9R 5K6 CanadaSearch for more papers by this authorBarbara L. Thomson, Barbara L. Thomson Department of Fisheries and Oceans, Biological Sciences Branch, Pacific Biological Station, Nanaimo, British Columbia, V9R 5K6 CanadaSearch for more papers by this authorGordon A. McFarlane, Gordon A. McFarlane Department of Fisheries and Oceans, Biological Sciences Branch, Pacific Biological Station, Nanaimo, British Columbia, V9R 5K6 CanadaSearch for more papers by this author Richard J. Beamish, Richard J. Beamish Department of Fisheries and Oceans, Biological Sciences Branch, Pacific Biological Station, Nanaimo, British Columbia, V9R 5K6 CanadaSearch for more papers by this authorBarbara L. Thomson, Barbara L. Thomson Department of Fisheries and Oceans, Biological Sciences Branch, Pacific Biological Station, Nanaimo, British Columbia, V9R 5K6 CanadaSearch for more papers by this authorGordon A. McFarlane, Gordon A. McFarlane Department of Fisheries and Oceans, Biological Sciences Branch, Pacific Biological Station, Nanaimo, British Columbia, V9R 5K6 CanadaSearch for more papers by this author First published: July 1992 https://doi.org/10.1577/1548-8659(1992)121 2.3.CO;2Citations: 44AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Abstract -Large numbers of spiny dogfish Squalus acanthias moved into the area near the mouth of the Big Qualicum River, British Columbia, at the time hatchery-reared smolts of Chinook salmon Oncorhynchus tshawytscha and coho salmon O. kisutch were leaving the river in 1988 and 1989. A small percentage of the spiny dogfish preyed on the smolts, but the resulting smolt mortality is believed to have been large because of the large numbers of spiny dogfish in this area. Spiny dogfish also fed on adult salmon in the fall. The long-term decline in survival of chinook salmon produced at the Big Qualicum Hatchery was similar to the pattern of survival of other hatchery-produced salmon. We propose that this long-term decline in survival results from predation. Citing Literature Volume121, Issue4July 1992Pages 444-455 RelatedInformation