Phase shift of a tidal rhythm by light-dark cycles in the semi- terrestrial crab Sesarma pictum

M. Saigusa

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Under conditions of constant dim light, the rhythm for the first ten days was unimodal (larval release just after the nocturnal high tide) and then became bimodal (no apparent synchrony with the tides or with other members of the population) for the remainder of the experimental period. In photoperiods similar to those in the field, the rhythm was maintained; the phase was bimodal and the timing of larval release was delayed 1-2 h from predicted times of high water in the habitat. When the photoperiod was advanced or delayed, the tidal rhythm was phase-shifted accordingly. The photoperiod does entrain the release rhythm to bimodal tidal cycle. So the phase-shift of a tidal rhythm by 24-h LD cycles is a difficult phenomenon to explain. -from Author

Original languageEnglish
Pages (from-to)257-264
Number of pages8
JournalBiological Bulletin
Volume182
Issue number2
Publication statusPublished - 1992

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Photoperiod
photoperiod
crab
crabs
tides
tide
synchrony
tidal cycle
Ecosystem
Light
Water
habitat
habitats
Population
water

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Agricultural and Biological Sciences (miscellaneous)
  • Aquatic Science

Cite this

Phase shift of a tidal rhythm by light-dark cycles in the semi- terrestrial crab Sesarma pictum. / Saigusa, M.

In: Biological Bulletin, Vol. 182, No. 2, 1992, p. 257-264.

Research output: Contribution to journalArticle

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