Integrated study on the formation ofthe freshwater fish fauna in western Japan based on a large molecular data set

本研究使用大型遗传数据集研究了日本西部严格淡水鱼类区系的形成。对20多个物种的比较地理学/系统发育分析揭示了其种群结构的几种主要模式，并对琵琶湖特有动物群的起源有了新的认识。基于生态位模型，推测了最大海退期和最大海侵期鱼类的潜在分布格局及其变化。自然/人工二次接触下的生态地理格局在几种情况下，经验澄清，在日本西部的淡水鱼类的动态分布过程中提供了重要的见解。

This study examined the formation of the strictly freshwater fish fauna in western Japan using a large genetic data set. A comparative phylogeographic/phylogenetic analysis of over 20 species revealed several major patterns in their population structures and led to a new understanding of the origin of the Lake Biwa endemic fauna. Based on ecological niche modeling, the potential distribution patterns of fish and their changes were inferred for presumed maximum regression and transgression periods. The phylogeographic patterns under natural/artificial secondary contact were clarified empirically in several cases, giving important insights into the dynamic distribution processes of freshwater fishes in western Japan.