THE KARYOTYPES OF 3 SPECIES IN GENUS Hynobius AND Sallamandrella keyserlingii
三种小鲵和极北鲵的核型

The karyotypes of Hynobius amjiensis,H chinensis,H leechii (Huanren Co ,Liaoning) and Sallamandrella keyserlingii (Baihe Co ,Jilin) were investigated Three species of Hynobius had 2n=56 with 4 groups of large,middle,small biarmed chromosomes and uniarmed small chromosomes S keyserlingii had 2n=62 with 3 groups of large,middle and small chromosomes The conspicuous differences of karyotypes between Huanren and Qianshan districts of H leechii were discussed associated with their taxonomical problems The karyotypes of 3 species in Hynobius were compared and analysed,and the characteres of karyotypes of Chinese Hynobius were discussed The karyotypes of different districts of S keyserlingii were compared and the karyotype of S keyserlingii was compared with those of Hynobius