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Marine Biology

, Volume 141, Issue 6, pp 1069–1075 | Cite as

Temporal reproductive patterns within a breeding season of the hermit crab Pagurus filholi: effects of crab size and shell species

  •  K. Yoshino
  •  S. Goshima
  •  S. Nakao

Abstract.

The temporal reproductive patterns of both sexes within a breeding season of the hermit crab Pagurus filholi were investigated in terms of crab size. In their breeding season, line transect samples were made monthly to examine the reproductive activity of females. We also collected precopulatory guarding pairs as an indicator of male reproductive activity. The temporal occurrence of ovigerous females differed depending on their size, and the data from guarding pairs showed that the size of receptive females linearly decreased as season progressed. In males, usually large crabs took part in reproduction throughout the breeding season, except for the later period. A laboratory experiment showed that small individuals were more susceptible to predation than large individuals. Size-dependent reproductive activity in females suggested that females make different tradeoffs between reproduction and growth, depending on their susceptibility to predation. The lack of a clear pattern in males may reflect that large males are always dominant over small males in competition for mates.

Keywords

Laboratory Experiment Breeding Season Clear Pattern Large Individual Line Transect 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 2002

Authors and Affiliations

  •  K. Yoshino
    • 1
  •  S. Goshima
    • 1
  •  S. Nakao
    • 1
  1. 1.Laboratory of Marine Biodiversity, Graduate School of Fisheries Sciences, Hokkaido University, Minato-cho, Hakodate 041-8611, Japan

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