of the Mechanism Underlying the Island Rule : A Case Study of the Birds of the Southern Ryukyus.

大喙鸟是遵循岛屿法则的物种之一。整体而言，琉球南部的人口比邻近的台湾人口要小得多。在这个案例研究中，我对琉球南部的四个岛屿种群进行了形态学、生态学和遗传学检查，并将它们与台湾推定的祖先种群进行了比较。虽然被研究的岛屿彼此相距很近，但在形态、生态和遗传学上却发现了显著的差异。在琉球南部，最矮小的是生态上与祖先台湾人口最相似的人口。

Corvus macrorhynchos is one example of species following the island rule. The southern Ryukyus population as a whole has a much smaller body size than the neighboring Taiwanese population. In this case study, I conducted morphological, ecological and genetic examinations on four island populations in the Southern Ryukyus and compared them with the putative ancestral population in Taiwan. Although the studied islands were located very close to each other, there were found remarkable differences in morphology, ecology and genetics. In the Southern Ryukyus, the most massively dwarfed was the population ecologically the most similar to the ancestral Taiwanese population.