Fish Physiology and Biochemistry

, Volume 28, Issue 1–4, pp 443–444 | Cite as

Lunar cycle in the reproductive activity in the forktail rabbitfish

  • M.S. Rahman
  • A. Takemura
  • Y.J. Park
  • K. Takano
Article

Abstract

Histological observations of the gonads of Siganus argenteus showed that gametes developed toward the last quarter moon from May to July. Weekly changes in plasma steroid hormones were correlated closely with gonadal development. Human chorionic gonadotropin (hCG) stimulated in vitro production of steroid hormones at the specific lunar phase. These results suggest that the concomitant physiological events in the gonads strictly changes with the lunar cycle.

Keywords

Steroid Physiological Event Chorionic Gonadotropin Human Chorionic Gonadotropin Reproductive Activity 

References

  1. Rahman, M.S. 2001. Physiological studies on lunar reproductive rhythms in rabbitfishes. Ph.D. Thesis, Department of Marine and Environmental Sciences, University of the Ryukyus, Japan.Google Scholar

Copyright information

© Kluwer Academic Publishers 2003

Authors and Affiliations

  • M.S. Rahman
    • 1
  • A. Takemura
    • 1
  • Y.J. Park
    • 1
  • K. Takano
    • 1
  1. 1.Sesoko Station, Tropical Biosphere Research CenterUniversity of the RyukyusOkinawaJapan

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