摘要
通过对奥利亚罗非鱼(♀)和鳜(♂)杂交的受精细胞学观察发现:异源精子入卵后产生星光,并核化成雄性原核,与雌原核互相靠近,接触最终完全融合为一个合子核,合子核继续分裂。分析比较了奥利亚罗非鱼,鳜以及奥鳜杂种胚胎发育情况,发现杂种胚胎的发育速度在囊胚早期与母本奥利亚罗非鱼基本一致,到囊胚后期速度有所减慢,但与鳜胚胎发育速度相差很大。这表明奥利亚罗非鱼和鳜虽属不同科间的远缘杂交,但有正常的受精细胞学程序和常规的细胞分裂(卵裂)方式。
Tilapia are native to Africa,but have been introduced into many countries around the world.They are disease-resistant,reproduce easily,eat a wide variety of foods and tolerate poor water quality with low dissolved oxygen levels,but are not able to bear low temperature.Mandarin fish,a carnivore freshwater fish,is popular with the advantage of rich nutrition and delicious tasty.So we want to obtain a new breed through hybridization between Oreochromis aurea(♀)and Siniperca chuatsi(♂).And we finally got some p...
出处
《水生生物学报》
CAS
CSCD
北大核心
2006年第5期559-562,共4页
Acta Hydrobiologica Sinica
基金
国家自然科学基金项目(30371116)
国家"十五"攻关专题(2004BA526B0110)
"863"课题(2001AA243061)资助
关键词
奥利亚罗非鱼
鳜
远缘杂交
受精细胞学
胚胎发育
Oreochromis aurea
Siniperca chuatsi
Distant hybridization
Fertilization Cytology
Embryonic development
