Diet of Risso's dolphin ( Grampus griseus ) in the western Mediterranean Sea
作者： Carmen Blanco , Mª Ángeles Raduán , Juan Antonio Raga
DOI: 10.3989/SCIMAR.2006.70N3407
关键词: Mediterranean sea 、 Grampus griseus 、 Fishery 、 Argo 、 Mediterranean climate 、 Predation 、 Pelagic zone 、 Ommastrephidae 、 Biology
摘要: The diet of Risso’s dolphin in the Mediterranean is described based on 15 animals stranded between 40°25’N 00°32’W and 37°35’N 00°45’E from April 1987 to January 2003. prey were mainly oceanic cephalopods. Pelagic octopods, especially A. argo, most abundant (mean = 41.28%; SD±34.32). Species belonging families Ommastrephidae, Histioteuthidae Onychoteuthidae also frequent components its diet. bathymetric distribution cephalopods shows that preferentially feeds middle slope (600 800 m depth) Mediterranean.
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