摘要
The tonguefish Cynoglossus semilaevis (Günther) is a rare fish species in Chinese offing, inhabiting in the warm water bottom. The metaphase chromosome preparation of the fries has been got from their fins by hot air drying methods, while the metaphase chromosomes of one year old young fish which has physiologically sex differentiation has been got from their renal tissues by the method of PHA and colchicine injection. The karyotypes were examined. The result shows that there are 42 acrocentric chromosomes in diploid and their karyotype formula is 2n=42t, and there existed heterotypic sex chromosome which belongs to ZW/ZZ type. The sex ratio in artificial bred stock is nearly 1∶1.
The tonguefish Cynoglossus semilaevis (Günther) is a rare fish species in Chinese offing, inhabiting in the warm water bottom. The metaphase chromosome preparation of the fries has been got from their fins by hot air drying methods, while the metaphase chromosomes of one year old young fish which has physiologically sex differentiation has been got from their renal tissues by the method of PHA and colchicine injection. The karyotypes were examined. The result shows that there are 42 acrocentric chromosomes in diploid and their karyotype formula is 2n=42t, and there existed heterotypic sex chromosome which belongs to ZW/ZZ type. The sex ratio in artificial bred stock is nearly 1∶1.
出处
《水产学报》
CAS
CSCD
北大核心
2005年第3期417-419,共3页
Journal of Fisheries of China
基金
国家自然科学基金项目(30271027)
国家863计划项目(2002AA603011)
关键词
半滑舌鳎
核型
性染色体
Cynoglossus semilaevis
karyotype
sex chromosome
