摘要
对乌苏里拟鱼尝的繁殖生物学性状做了测定分析 ,在 6月初时体长 2 2 5 - 46 8mm的个体绝对怀卵数2 6 84± 10 2 9粒 ,发现比自然繁殖期中的怀卵数量少 ,认为可能一些卵细胞增殖或发育尚未达到一定程度而影响怀卵数量。该鱼的卵子为橘黄色 ,卵径平均 2mm ,在水温 15 - 17℃时 ,受精卵需要约 96小时以上的胚胎发育 ,鱼苗出膜。人工繁殖分三个试验组 :HCG、LHRH -A +HCG和对照组 ,第一次注射均采用了DOS催熟 ,分别获得 4 0 %、85 %。
The propagation biological charaters of pseudobagras ussuriensis are determined and analyzed in this report.The quantity of eggs is 2684±1029 when its body-length is 225-468mm.The quantity of eggs is less than it in nature.The color of the egg is orange,and the diameter of the egg is 2mm .It lasts 96hrs from fertelized egg to embryo in the incubation at the tempratur e of 15-17℃.The artificial propagation is divided into three group:HCG,LHRH-A+HCG and control.The ratio of the accelaration maturation is 40%,85% and 0 respectively.
出处
《水产学杂志》
CAS
2001年第2期1-3,共3页
Chinese Journal of Fisheries
基金
中国水产科学研究院"十五"攻关重点课题 (2 0 0 1- 0 1- 0 3)
