Ocean Science www.ocean-sci.net 1812-0784 1812-0792 4 1 2008 10.5194/os-4-49-2008 http://www.ocean-sci.net/4/49/2008/ http://www.ocean-sci.net/4/49/2008/os-4-49-2008.html http://www.ocean-sci.net/4/49/2008/os-4-49-2008.pdf 49 59 2008-02-07 Ecological niches of three teuthophageous odontocetes in the northwestern Mediterranean Sea E. Praca emilie.praca@gmail.com A. Gannier Centre de Recherche sur les Cétacés – Marineland, Antibes, France MARE Center – Laboratory for Oceanology, University of Liège, Liège, Belgium Groupe de Recherche sur les Cétacés, Antibes, France In the northwestern Mediterranean Sea, sperm whales, pilot whales and Risso's dolphins prey exclusively or preferentially on cephalopods. In order to evaluate their competition, we modelled their habitat suitability with the Ecological Niche Factor Analysis (ENFA) and compared their ecological niches using a discriminant analysis. 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