Circadian Variation in Circulating Levels of Melatonin, Testosterone and Estradiol-17 in a Tropical Freshwater Catfish, Clarias batrachus, during Different Phases of the Annual Reproductive Cycle

Author: Roy S.M.   Lal B.   Singh T.P.  

Publisher: Taylor & Francis Ltd

ISSN: 0929-1016

Source: Biological Rhythm Research, Vol.32, Iss.5, 2001-12, pp. : 569-578

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