摘要
本文研究温州地区的黑眶蟾蜍、黑斑蛙、中国雨蛙的核型 ,分析了三个地理居群的黑眶蟾蜍、四个地理居群的黑斑蛙、三个地理居群的中国雨蛙核型。结果表明不同地理居群的同种蛙有相同的染色体数和核型模式。黑眶蟾蜍为 2n =2 2 ,NF =44 ,核模式 6 +5 ;黑斑蛙为 2n =2 6 ,NF =5 2 ,核模式 5 +8;中国雨蛙为 2n =2 4,NF =48,核模式 6 +6。但同一种蛙的不同地理居群之间在SM数目和顺序、次缢痕或随体的位置等有所不同。
The karyotypes of Bufo melanostictus, Rana nigromaculata and Hyla chinensis from Wenzhou have been studied. The karyotypes of three populations of Bufo melanostictus Schneider, four populations of Rana nigromaculata and three populations of Hyla chinensis from different geographical regions are compared. The results demonstrate that the same species of different geographical populations have the same amount of chromosome and karyotypic formulae. Bufo melanostictus Schneider has 2n=22, NF=44 and 5+6 karyotypic formulae. Rana nigromaculata has 2n=26, NF=52 and 5+8 karyotypic formulae. Hyla chinensis has 2n=24, NF=48 and 6+6 karyotypic formulae. But some dissimilarities are found among them. First, the number and sequence of submetacentric chromosome are different among them, and the secondary contriction(SC) or satellite(Sat) are also different. It shows that the chromosomes of same species of different geographical population have diversities.
出处
《四川动物》
CSCD
2001年第4期181-184,共4页
Sichuan Journal of Zoology
