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Predation by Age-0 Bluefish on Age-0 Anadromous Fishes in the Hudson River Estuary

1993; Wiley; Volume: 122; Issue: 3 Linguagem: Inglês

10.1577/1548-8659(1993)122 2.3.co;2

1548-8659

Francis Juanes, Rick E. Marks, Kim A. McKown, David O. Conover,

Isotope Analysis in Ecology

Transactions of the American Fisheries SocietyVolume 122, Issue 3 p. 348-356 Article Predation by Age-0 Bluefish on Age-0 Anadromous Fishes in the Hudson River Estuary Francis Juanes, Francis Juanes Marine Sciences Research Center State University of New York, Stony Brook, New York, 11794-5000 USASearch for more papers by this authorRick E. Marks, Rick E. Marks Marine Sciences Research Center State University of New York, Stony Brook, New York, 11794-5000 USASearch for more papers by this authorKim A. McKown, Kim A. McKown New York Department of Environmental Conservation, Anadromous Fish Division Building 40State University of New York, Stony Brook, New York, 11790-2356 USASearch for more papers by this authorDavid O. Conover, David O. Conover Marine Sciences Research Center, State University of New York, USASearch for more papers by this author Francis Juanes, Francis Juanes Marine Sciences Research Center State University of New York, Stony Brook, New York, 11794-5000 USASearch for more papers by this authorRick E. Marks, Rick E. Marks Marine Sciences Research Center State University of New York, Stony Brook, New York, 11794-5000 USASearch for more papers by this authorKim A. McKown, Kim A. McKown New York Department of Environmental Conservation, Anadromous Fish Division Building 40State University of New York, Stony Brook, New York, 11790-2356 USASearch for more papers by this authorDavid O. Conover, David O. Conover Marine Sciences Research Center, State University of New York, USASearch for more papers by this author First published: May 1993 https://doi.org/10.1577/1548-8659(1993)122 2.3.CO;2Citations: 35AboutPDF 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 We examined the diets of 374 age-0 bluefish Pomatomus saltatrix collected in the Hudson River estuary from July to October 1989. Fish were the primary prey, accounting for 96–99% of the diet by weight. Anadromous fishes, including striped bass Morone saxatilis, blueback herring Alosa aestivalis, American shad Alosa sapidissima, and Atlantic tomcod Microgadus tomcod, constituted a large portion of the diet of bluefish of all sizes. There was a positive linear relationship between prey size and predator size, Small and medium-sized bluefish consumed mostly bay anchovies Anchoa mitchilli, striped bass, and white perch Morone americana, whereas the largest bluefish primarily preyed on Atlantic tomcod. Bluefish fed opportunistically on the most abundant prey (bay anchovies, striped bass, and white perch) but larger bluefish exhibited a preference for Atlantic tomcod. We also detected an ontogenetic shift in prey type that may have been determined by changes in the size and relative abundance of prey that occurred as the season progressed. Predation by age-0 bluefish may represent a substantial source of mortality for age-0 anadromous fishes in the Hudson River estuary. Citing Literature Volume122, Issue3May 1993Pages 348-356 RelatedInformation