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Rhythmic changes in testicular activity with lunar cycle in the forktail rabbitfish
Author(s) -
Rahman M. S.,
Takemura A.,
Nakamura S.,
Takano K.
Publication year - 2003
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1046/j.1095-8649.2003.00036.x
Subject(s) - biology , testosterone (patch) , rhythm , zoology , medicine , endocrinology
Testosterone, 11‐ketotestosterone and 17α ,20β‐dihydroxy‐4‐pregnen‐3‐one in the forktail rabbitfish Siganus argenteus peaked around the full moon and the last quarter moon, respectively. Since changes in these hormones were correlated with histological change in the testis, the present study provided conclusive evidence for importance of the lunar periodicity in the reproductive activity of the forktail rabbitfish.