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Atlantic bluefin tuna Thunnus thynnus feeding ecology in the northern Gulf of Mexico: a preliminary description of diet from the western Atlantic spawning grounds
Authors:C. M. Butler  J. M. Logan  J. M. Provaznik  E. R. Hoffmayer  M. D. Staudinger  J. M. Quattro  M. A. Roberts  G. W. Ingram Jr.  A. G. Pollack  M. E. Lutcavage
Affiliation:1. Center for Fisheries Research & Development, Gulf Coast Research Laboratory, University of Southern Mississippi, Ocean Springs, MS, U.S.A.;2. Massachusetts Division of Marine Fisheries, New Bedford, MA, U.S.A.;3. Large Pelagics Research Center, Zoology Department, University of New Hampshire, Durham, NH, U.S.A.;4. National Oceanic and Atmospheric Administration, Southeast Fisheries Science Center, Mississippi Laboratories, Pascagoula, MS, U.S.A.;5. Texas Parks and Wildlife Department, La Marque, TX, U.S.A.;6. Department of Environmental Conservation, University of Massachusetts Amherst, Amherst, MA, U.S.A.;7. Missouri Cooperative Fish and Wildlife Research Unit, Department of Fisheries and Wildlife Sciences, University of Missouri, Columbia, MO, U.S.A.;8. Marine Science Program and School of the Environment, Department of Biological Sciences, University of South Carolina, Columbia, SC, U.S.A.;9. Riverside Technology, Inc., National Oceanic and Atmospheric Administration, Southeast Fisheries Science Center, Mississippi Laboratories Pascagoula, Pascagoula, MS, U.S.A.;10. Large Pelagics Research Center, Department of Environmental Conservation, University of Massachusetts Amherst, Gloucester, MA, U.S.A.
Abstract:A combination of stomach contents, nitrogen stable‐isotope and tissue C:N values are presented to demonstrate feeding activity of Atlantic bluefin tuna Thunnus thynnus on the Gulf of Mexico (GOMEX) spawning grounds. Diets include teleosts, cephalopods, crustaceans and a pelagic tunicate (Pyrosoma atlanticum). Results reveal the need to classify the GOMEX as a T. thynnus feeding ground.
Keywords:food web  lipids  Pyrosoma atlanticum  stable isotopes  trophic ecology
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