Spawning behavior and artificial fertilization in captive reared red spotted grouper, Epinephelus akaara
Spawning behavior and artificial fertilization in captive reared red spotted grouper, Epinephelus akaara
复制标题
圈养红斑石斑鱼的产卵行为和人工受精
DOI：
10.1016/s0044-8486(01)00722-0
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发表时间：
2002
期刊：
影响因子：
4.5
通讯作者：
A. Nakazono
中科院分区：
文献类型：
--
作者：
S. Okumura;K. Okamoto;R. Oomori;A. Nakazono
通过对赤点石斑鱼产卵行为的观察，探讨了赤点石斑鱼产卵池受精率低的原因。人工受精也进行了检查池养鱼类的卵质量。石斑鱼成对从水底垂直冲向水面，在水面释放配子。它们有时会从水面上跳下来，在产卵前后在水面上水平游动。人工受精率（84.3%）显著高于自然产卵率（19.0%）。池内受精率低可能是由于空间有限，特别是水深不足，这可能抑制了正常的产卵行为。
Spawning behavior was observed in the red spotted grouper, Epinephelus akaara, to investigate the reason for low fertilization rates in spawning tanks. Artificial fertilization was also carried out to examine the egg quality of tank-reared fish. Grouper dashed in a pair vertically from the bottom to the water surface and released gametes at the surface. The pair sometimes jumped from the surface and swam horizontally on the water surface before or after spawning. The mean artificial fertilization rate (84.3%) was significantly higher than the rate of the spontaneous spawning in the tank (19.0%). The low tank fertilization rate may be due to limited space, especially insufficient water depth, which may have inhibited normal spawning behavior.