关键词: 云纹石斑鱼, 鞍带石斑鱼, 杂交子代, 胚胎发育, 形态观察, Epinephelus moara, Epinephelus lanceolatus, hybride, embryonic development, morphological observation

Abstract: Hybridization is the most widely used and effective method of artificial breeding in aquaculture. We documented embryonic development and the growth and morphological characteristics of larva, juveniles, and young fish in the hybrid (Epinephelus moara ♀× E. lanceolatus ♂) by artificial methods. The embryonic development of the hybrid was divided into cleavage stage, blastula stage, gastrula stage, neurula stage, and organogenesis stage. In sea water (22±1℃, salinity 33, pH7.8), 35 h 23 min was required for hybrid embryonic development. In cleavage stage, blastula stage, before and after the larvae, the hybrid had higher mortality. Statistics showed that hybrid hatching rate was 91.5% lower than control group (93.1%), deformity rate was 10.5% higher than control group (5.3%). Based on the features of the yolk sac, second dorsal fin spine, pelvic fin spine, scales and body color, the post-embryonic development of the hybrid was divided into larval (0~27 d), juvenile(28~45 d), and young fish stages(46 d). The results suggested that the hybrid grows more rapidly than E. moara.