Annual changes in ovarian development stages of farmed female red‐spotted grouper, <i>Epinephelus akaara</i> , and inducing sexual maturity using photoperiod manipulation

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چکیده

This study aimed to investigate the correlation between melatonin and reproductive mechanism of farmed female red-spotted groupers, Epinephelus akaara. Through cycle experiment, sexual maturity period was determined be from June July, following which spawning season occurred in August. In addition, kiss1, kiss2, GPR54 mRNA expression levels peaked January, whereas that sbGnRH remained at high January May decreased during seasons. During day–night cycle, a nocturnal rhythm AANAT2 observed brain, showed seasonal pattern with increased summer compared winter. A reproduction-related genes could not via administration, more induced under long photoperiod conditions short conditions. These results indicate grouper is related changes melatonin, further research needed clarify mechanism. Our findings provide basic information for identifying mechanisms E.

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ژورنال

عنوان ژورنال: Journal of the World Aquaculture Society

سال: 2022

ISSN: ['0735-0147', '0893-8849', '1749-7345']

DOI: https://doi.org/10.1111/jwas.12913