Studies of Embryonic Development of Lateolabrax japonicus
Hu Xiancheng ( Dept. of Biology , Chongqing Teachers College , Chongqing , 630047) Cao Shuangjun Zhou Zhongliang Sun Guoying ( East China Normal University , Shanghai , 200062)
The embryonic development of Lateolabrax japonicus is descritod in this paper. The eggs are spherical in shape . isolated and buoyant , measuring 1 . 3 8 - 1 . 51 mm in diameter. Most eggs have 1 - 2 oil globules and the few eggs have 3- 4 oil globules. The fertilized eggs are hatched out in about 86 hours in natural sea water with temperature and saliniiy of 12. 2 - 14. 0℃ and 2. 2% respectively. The embryonic development can be divided into 5 stages and 3 0 phases.