Active behavior and 1/f noise in shell-changing behavior of the hermit crabs

Nobuhide Kitabayashi*, Yoshiyuki Kusunoki, Yukio Pegio Gunji

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Hermit crabs are known to carry a gastropod shell to prevent abdomen from injuring by predators and cannibalism. One can regard the shell as a boundary between inside and outside worlds for hermit crabs. We conducted an experiment in which hermit crabs without shells deal with artificial tubes. The situation without a shell requires a part of experimental setup to be regarded as inside by each hermit crab. We accept the distance of locomotion as the indication of the estimation process performed by an individual on parts of the experimental setup. As a result, behavioral hierarchy was found with respect to the way of constituting the boundary. At each level of hierarchy, active behavior produced 1/f noise in comparison with the passive one. It suggests that finding 1/f noise at each level of hierarchy may lead to a lower level of hierarchy in another situation.

Original languageEnglish
Pages (from-to)327-336
Number of pages10
JournalRivista di Biologia - Biology Forum
Issue number2
Publication statusPublished - 2002 Nov 12
Externally publishedYes


  • 1/f
  • Behavioral plasticity
  • Hermit crab
  • Hierarchy
  • Inside and outside

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)


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