Lunar spawning in Siganus canaliculatus
Lunar spawning in Siganus canaliculatus
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DOI：
10.1111/j.1095-8649.1999.tb02071.x
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发表时间：
1999-12-01
影响因子：
2
通讯作者：
Takano, K
中科院分区：
文献类型：
--
作者：
Hoque, MM;Takemura, A;Takano, K
1993年5月和6月，海草兔鱼在新月后4天和1994年新月后7天产卵。促性腺指数（I-G）和血清卵黄蛋白原（VTG）水平随月经周期波动；I-G和VTG水平分别在新月和月亏前后达到峰值，表明该物种的产卵与月亮周期同步。卵黄细胞在第一次产卵后第2天出现，第30天完全成熟。当更大比例的最晚期卵母细胞进入第三卵黄期时，它们形成一批，并从相邻的较小的卵黄前卵母细胞中分离出来，这表明小管棘鱼是一个多卵者，具有一个卵巢，属于卵母细胞发育的群体同步型。在第三卵黄期和之后使用卵母细胞分批评估的批量繁殖力范围为0.52至256万个卵子。批繁殖力(F)与叉长(L)之间的关系可表示为F=0.0536854L(5.07292) (C) 1999 The Fisheries Society of British islands。
A major spawning of the seagrass rabbitfish Siganus canaliculatus occurred 4 days after the new moon in both May and June 1993, and 7 days after the new moon in 1994. The gonadosomatic index (I-G) and serum vitellogenin (VTG) levels fluctuated according to the lunar cycle; I-G and VTG levels showed peaks at around the new moon and the waning moon, respectively, suggesting that spawning of this species is synchronized with the lunar cycle. Vitellogenic oocytes appeared on day 2 after the first spawning and were fully mature on day 30. When a greater percentage of the most advanced oocytes attained the tertiary yolk stage, they formed a batch and separated from the adjacent group of smaller pre-vitellogenic oocytes, indicating that S. canaliculatus is a multiple spawner with an ovary belonging to the group-synchronous type of oocyte development. Batch fecundity, assessed using batches of oocytes at and after the tertiary yolk stage, ranged from c 0.52 to 2.56 million eggs. The relationship between batch fecundity (F) and fork length (L) can be represented as F=0.0536854L(5.07292) (C) 1999 The Fisheries Society of the British Isles.