Endocrine control of diurnal oocyte maturation in the kyusen wrasse, Halichoeres poecilopterus.

@article{Matsuyama2002EndocrineCO,
  title={Endocrine control of diurnal oocyte maturation in the kyusen wrasse, Halichoeres poecilopterus.},
  author={Michiya Matsuyama and Shin Onozato and Masaaki Kashiwagi},
  journal={Zoological science},
  year={2002},
  volume={19 9},
  pages={
          1045-53
        }
}
The present study examined diurnal cycles of oocyte development and maturation in the kyusen wrasse, Halichoeres poecilopterus, and investigated the sensitivity of oocytes to maturation-inducing hormone (MIH) and gonadotropic hormone (GTH). Female fish were sampled at fixed intervals throughout the day, revealing that final oocyte maturation and ovulation were completed by 6:00 hr, and that spawning occurred daily between 6:00 and 9:00 hr. In vitro experiments showed that the steroids 17,20beta… CONTINUE READING
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