Phylogeography of Daphnia magna in Europe

摘要: The phylogeographical structure of the water flea Daphnia magna in Europe was analysed using a 609-bp fragment cytochrome oxidase subunit I gene. Only moderate overall genetic divergence detected within Europe. We four genetically and, to large extent, geographically distinct phylogroups Our results suggest that these groups recolonized parts around 100,000 BP from different refugia. Overall, pattern suggests high degree provincialism with patchy occurrence specific lineages, thus confirming highly subdivided usually observed freshwater zooplankton populations. Although region Mediterranean Sea only sampled patchily, we obtained strong indications for more divergent lineages this region. Comparing our European samples North America and Japan revealed higher level differentiation, reflecting limited intercontinental dispersal.