Inference of oversea dispersal abilities of amphibians and terrestrial reptiles in the central Ryukyu based on the island equilibrium model

调查了奄美群和冲绳岛群许多岛屿上两栖动物和爬行动物的分布。利用面积-距离模型进行的分析表明，在一些物种中，距离主岛的地理距离对该物种在岛屿上的存在/缺失具有显著的解释力，这表明海外扩散对这些物种在岛屿上的种群维持起了一定的作用。然而，对少数物种的遗传分析并不支持这一观点。

Distributions of amphibians and reptiles in many islands of the Amami and Okinawa Groups were surveyed. An analysis using area-distance model showed that in a few species geographic distance from main-islands had a significant explanatory power for presence/absence of the species in an island, suggesting that overseas dispersals have taken some role in maintenance of island populations in those species. However, genetic analysis for a few species did not support this view.