云南昆明地区滇蛙和昭觉林蛙的形态特征及习性分化比较

Comparisons of Morphological Characters and Habitat Differentiation between Rana pleuraden and Rana chaochiaoensis in Kunming Area

根据对滇蛙（Rana pleuraden）和昭觉林蛙（R．chaochiaoensis）标本外部形态比较和野外观察结果，滇蛙和昭觉林蛙的雌雄性比大约在1：1之间，而它们的形态特征、栖境与习性、繁殖时间等均存在分化。昭觉林蛙更适应陆地生活。昆明地区的滇蛙和昭觉林蛙的繁殖策略不同，滇蛙的繁殖在3—7月，昭觉林蛙的在9—11月。昭觉林蛙选择在冬季繁殖，可以避开与其它蛙类的繁殖竞争，但其更深层次的生物学意义值得进一步探讨。

According to the results of external character comparisons and filed observation on Rana pleuraden and R. chaochiaoensis ,the male and female ratio of both frogs is about 1： 1. However, their external characters, inhabits and habits and breeding time differentiate obviously. R. chaochiaoensis is more adapted land life than R. pleuraden. The breeding strategy of both frogs in Kunming area is different. The breeding time of R. pleuraden is from March to July and R. chaochiaoensis is from September to November. Breeding time selected in inclement winter by R. chaochiaoensis could avoid competition with other frogs, but the biological meaning of deeper level is deserved to discuss further.