Studies on the Reproductive Rhythms of Fishes-XXXIII. Decline in Ovarian Activity during the Spawning Season of the Chichibu-Goby Tridentiger obscurus.
Studies on the Reproductive Rhythms of Fishes-XXXIII. Decline in Ovarian Activity during the Spawning Season of the Chichibu-Goby Tridentiger obscurus.
复制标题
鱼类生殖节律的研究-XXXIII。
DOI：
10.2331/suisan.58.1079
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发表时间：
1992
期刊：
影响因子：
--
通讯作者：
I. Hanyu
中科院分区：
文献类型：
--
作者：
T. Murayama;K. Aida;I. Hanyu
隐斑齐布虾虎鱼具有明显的年生殖周期，在其产卵季节重复产卵。在本文中，卵巢活动减少重复产卵在产卵季节。在产卵中期和末期分别处死一龄鱼，比较两个时期卵巢组织学、卵母细胞直径分布、雌二醇（E2）产生量和垂体促性腺激素活性。E2的卵巢生产显着下降，在产卵季节结束时，表明卵巢活动的下降与接近的产卵季节。这些结果进行了讨论有关的卵巢由于重复产卵的生理条件。
The chichibu-goby Tridentiger obscurus exhibits a distinct annual reproductive cycle, and spawns repeatedly during its sapwning season. In the present paper, reductions in ovarian activity following repeated spawnings during the spawning season are described. Yearling fish were sacrificed in the middle and at the end of the spawning season, and ovarian histology, distribution of oocyte diameter, estradiol-17β (E2) production, and pituitary gonadotrophic activity were compared between the two periods. E2 production by the ovary fell significantly at the end of the spawning season, suggesting a decline in ovarian activity with the approach of the close of the spawning season. These results are discussed in relation to the physiological condition of the ovary due to repeated spawnings.