Regional variation in shell utilization patterns of the hermit crab <i>Pagurus filholi</i>

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  • Hasegawa Hiromi
    Department of Biological Science, Faculty of Sciences, Nara Women's University
  • Wada Satoshi
    Laboratory of Marine Biology, Graduate School of Fisheries Sciences, Hokkaido University
  • Aoki Masakazu
    Shimoda Marine Research Center, University of Tsukuba
  • Wada Keiji
    Department of Biological Science, Faculty of Sciences, Nara Women's University

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  • Regional variation in shell utilization patterns of the hermit crab Pagurus filholi

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Description

Shell utilization patterns of the intertidal hermit crab Pagurus filholi were compared between two distant local populations from Oura Bay, Shimoda, central Japan, and Hakodate Bay, Hakodate, northern Japan, in conjunction with the shell resource availability and shell utilization patterns of sympatric hermit crabs. Gastropod species of shells dominantly utilized by P. filholi differed between Oura Bay and Hakodate Bay, and shell utilization patterns did not correspond to the availability of shells in both study localities. Between P. filholi and other sympatric hermit crabs, there were some clear differences in shell species utilized in both localities, and values of niche overlap indices in shell and habitat utilizations between P. filholi and other crabs were higher in Hakodate Bay than in Oura Bay. The rich supply of shell resources in Hakodate Bay compared to Oura Bay is considered to be a factor responsible for the difference in the degree of niche overlapping between the two localities.

Journal

  • Plankton and Benthos Research

    Plankton and Benthos Research 4 (2), 72-76, 2009

    The Plankton Society of Japan, The Japanese Association of Benthology

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