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Annual cyclical changes in the mono amine oxidase activity in the testis of the teleost channa punctatus

, : Annual cyclical changes in the mono amine oxidase activity in the testis of the teleost channa punctatus. General & Comparative Endocrinology 41(2): 240-242

Correlative changes in the monoamine oxidase (MAO) activity were recorded biochemically in the testis of C. punctatus during different phases of the annual reproductive cycle. MAO activity increased with increase in testicular weight and maturity and declined during the postspawning and resting phases. MAO may play some role in the growth cycle of the testis. 5-Hydroxytryptamine (5-HT) concentration was high in the testis during the resting phase and was markedly reduced during the spawning phase. Thus, there seems to be an inverse relationship between MAO and 5-HT in the testis during its annual cycle.


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