Do Porpoises Choose Their Associates? A New Method for Analyzing Social Relationships among Cetaceans

• Mai Sakai,

  Affiliations Center for International Cooperation, Ocean Research Institute, The University of Tokyo, Tokyo, Japan, Life Science Network, The University of Tokyo, Tokyo, Japan

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• Ding Wang ,

  * E-mail: wangd@ihb.ac.cn

  Affiliation Key Laboratory of Aquatic Biodiversity and Conservation of the Chinese Academy of Sciences, Institute of Hydrobiology of the Chinese Academy of Sciences, Wuhan, China

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• Kexiong Wang,

  Affiliation Key Laboratory of Aquatic Biodiversity and Conservation of the Chinese Academy of Sciences, Institute of Hydrobiology of the Chinese Academy of Sciences, Wuhan, China

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• Songhai Li,

  Affiliation Key Laboratory of Aquatic Biodiversity and Conservation of the Chinese Academy of Sciences, Institute of Hydrobiology of the Chinese Academy of Sciences, Wuhan, China

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• Tomonari Akamatsu

  Affiliation National Research Institute of Fisheries Engineering, Fisheries Research Agency, Ibaraki, Japan

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