摘要
本文报道尼奥鱼同其亲本尼罗罗非鱼、奥利亚罗非鱼形态上的异同点和判别方法。用卡方法对８ 个可数形态参数，用聚类分析和判别分析及主成分分析的方法对８ 个可量性状和２４个框架参数进行综合分析。从体色上看，尼奥鱼偏于父本奥利亚罗非鱼，而三种多元分析的结果均表明尼奥鱼的体型偏于母本尼罗罗非鱼， 因此认为控制体色和体型遗传的是不同的基因组合。建立了区分尼罗、奥利亚和尼奥鱼的简单判别公式。
Common and different morphological aspects, discriminant methods of Nile tilapia (Oreochromis niloticus), blue tilapia(O. aureus) and their hybrid (O. niloticus♀×O. aureus♂) were reported. Morphological differences of hybrid and their parents were comprehensively analyzed by χ 2-test of 8 meristic characters, and by clustering analysis, discriminant analysis and PCA of 9 metric plus 24 truss network characters. The hybrid resembled blue tilapia from body color, but it resembled Nile tilapia from the results of three multivariate analysis in body shape by different combination of genes. Genetics of body color and body size were controlled by different combination of genes. Discriminant functions were formed to identify Nile tilapia, blue tilapia and their hybrid.
出处
《水产学报》
CAS
CSCD
北大核心
1999年第3期261-265,共5页
Journal of Fisheries of China
关键词
尼罗罗非鱼
奥利亚罗非鱼
尼奥鱼
形态
亲本
Oreochromis niloticus,Oreochromis aureus,Oreochromis niloticus×Oreochromis aureus, Morphology
