齿突蟾属某些种的多态现象

本文报道某些锄足蟾科Pelobatidae动物的多态现象。讨论了同域或不同域的四种齿突蟾Scuti-ger,即刺胸齿突蟾S. mammatus(Guenther)、胸腺齿突蟾S. glandulatus(Liu)、木里齿突蟾S. mulicnsis Fei et Ye和皱纹齿突蟾S. ruginosus Zhao et jiang的皮肤瘰疣、第二性征等性状;用薄层等电聚焦电泳方法分析了同域三种齿突蟾的晶体蛋白。结果表明:前三种是有效种;后一种,即皱纹齿突蟾分别是前三种的多态性变体;这些变体以相同性状(即皮肤多瘭疣)同时表现在三个种中的现象,属于平行多态现象。

POLYMORPHISM IN SOME PELOBATID TOADS OF THE GENUS SCUTIGER

Polymorphism in some pelobatid toads is reported. The skin texture and the secondary sex characters in sympatric or allopatric populations of four Scutiger, namely S. mammatus (Guenther), S. glandulatus (Liu), S. muliensis Fei et Ye and S. ruginosus Zhao et Jiang are discussed. And the lens proteins of the three sympatric Scutiger are analysed by isoeleetric focusing in thin layer of polyaerylamide gel. It is considered that the first three of the 4 species studied are valid species, and that the three types of the sex characters of S. ruginous are but the polymorphic variants of the first three species respectively. The fact that these variants exhibit the same character (numerous warts on the skin) simultaneously in three closely related species is an expression of parallel polymorphism.