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Marine Survival of Pink Salmon Fry from Early and Late Spawners

1980; Wiley; Volume: 109; Issue: 1 Linguagem: Inglês

10.1577/1548-8659(1980)109 2.0.co;2

1548-8659

Sidney G. Taylor,

Fish Ecology and Management Studies

Transactions of the American Fisheries SocietyVolume 109, Issue 1 p. 79-82 Original Articles Marine Survival of Pink Salmon Fry from Early and Late Spawners Sidney G. Taylor, Sidney G. Taylor Northwest and Alaska Fisheries Center Auke Bay Laboratory, National Marine Fisheries Service, Post Office Box 155Auke Bay, Alaska, 99821 USASearch for more papers by this author Sidney G. Taylor, Sidney G. Taylor Northwest and Alaska Fisheries Center Auke Bay Laboratory, National Marine Fisheries Service, Post Office Box 155Auke Bay, Alaska, 99821 USASearch for more papers by this author First published: January 1980 https://doi.org/10.1577/1548-8659(1980)109 2.0.CO;2Citations: 29AboutPDF 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 Pink salmon, Oncorhynchus gorbuscha, eggs were collected from early-run and late-run spawners at Auke Creek, Alaska, and reared separately in a hatchery in deep-gravel incubators. Both groups of fry were marked the day after emergence, then released, unfed, to complete downstream migration. Early hatchery fry migrated downstream about 35 days ahead of late hatchery fry and about 55 days ahead of fry naturally hatched in Auke Creek. Hatchery fry developed faster than wild fry because hatchery water was warmer than Auke Creek water during egg incubation. Early hatchery fry had an average ocean life of 515 days and a marine survival of 0.17%; late hatchery fry had an average ocean life of 513 days and a marine survival of 1.46%. Low water temperatures experienced by early fry when they entered the estuary probably slowed their growth and made them more vulnerable to predators. Citing Literature Volume109, Issue1January 1980Pages 79-82 RelatedInformation