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Juvenile Life of Pacific Ocean Perch, Sebastes alutus, in Coastal Fiords of Southeastern Alaska: Their Environment, Growth, Food Habits, and Schooling Behavior

1976; Wiley; Volume: 105; Issue: 2 Linguagem: Inglês

10.1577/1548-8659(1976)105 2.0.co;2

1548-8659

H. Richard Carlson, Richard E. Haight,

Marine Bivalve and Aquaculture Studies

Transactions of the American Fisheries SocietyVolume 105, Issue 2 p. 191-201 Original Articles Juvenile Life of Pacific Ocean Perch, Sebastes alutus, in Coastal Fiords of Southeastern Alaska: Their Environment, Growth, Food Habits, and Schooling Behavior H. Richard Carlson, H. Richard Carlson Northwest Fisheries Center Auke Bay Laboratory, National Marine Fisheries Service, P.O. Box 155, Auke Bay, Alaska, 99821 USASearch for more papers by this authorRichard E. Haight, Richard E. Haight Northwest Fisheries Center Auke Bay Laboratory, National Marine Fisheries Service, P.O. Box 155, Auke Bay, Alaska, 99821 USASearch for more papers by this author H. Richard Carlson, H. Richard Carlson Northwest Fisheries Center Auke Bay Laboratory, National Marine Fisheries Service, P.O. Box 155, Auke Bay, Alaska, 99821 USASearch for more papers by this authorRichard E. Haight, Richard E. Haight Northwest Fisheries Center Auke Bay Laboratory, National Marine Fisheries Service, P.O. Box 155, Auke Bay, Alaska, 99821 USASearch for more papers by this author First published: March 1976 https://doi.org/10.1577/1548-8659(1976)105 2.0.CO;2Citations: 24AboutPDF 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 onEmailFacebookTwitterLinkedInRedditWechat Abstract Schools of juvenile Pacific ocean perch, Sebastes alutus, at four coastal fiord sites in southeastern Alaska were sampled by trawling. Younger juveniles (ages I and II) were over rougher substrate than older juveniles (ages III-V); both age groups were at shallower depths than adults. Lengths of juvenile perch varied between and within geographic areas, but the pattern of variation was not consistent. The most important food items were copepods and euphausiids; younger juveniles fed more on copepods and older juveniles more on euphausiids. Feeding activity was minimal in late winter and early spring. The relative strength of year classes fluctuated widely. Some juvenile perch are shown to become demersal by age I, and the hypothesis of a 2-3-year early pelagic existence is rejected. Citing Literature Volume105, Issue2March 1976Pages 191-201 RelatedInformation