Alpine Crossroads or Origin of Genetic Diversity? Comparative Phylogeography of Two Sympatric Microgastropod Species

摘要: The Alpine Region, constituting the Alps and Dinaric Alps, has played a major role in formation of current patterns biodiversity either as contact zone postglacial expanding lineages or origin genetic diversity. In our study, we tested these hypotheses for two widespread, sympatric microgastropod taxa – Carychium minimum O.F. Muller, 1774 tridentatum (Risso, 1826) (Gastropoda, Eupulmonata, Carychiidae) by using COI sequence data species potential distribution models analyzed statistical phylogeographical framework. Additionally, examined disjunct transatlantic populations those from Azores North America. general, both demonstrate structure composed several differentiated haplotype most likely resulting allopatric diversification isolated refugial areas during Pleistocene glacial periods. However, is more pronounced, which can be attributed to ecological constraints relating habitat proximity permanent bodies water. For lineages, broader Region was identified Several are endemic whereas single lineage per underwent expansion (re)colonize previously unsuitable habitats, e.g. Northern Europe. source traced back Eastern Western Alps. Consequently, identify significant ‘hot-spot’ diversity within European lineages. Passive dispersal via anthropogenic means best explains presence on We conclude that passive (anthropogenic) transport could mislead interpretation observed general.