Jailed in the mountains: Genetic diversity and structure of an endemic newt species across the Pyrenees

• DOI: 10.1371/journal.pone.0200214
• Publication Date: 2018-08-02T18:17:45Z
• Authors: Emilio Valbuena-U...; Neus Oromi; Anna Soler-Membrives; Salvador Carranza; Fèlix Amat; Sebastià Camarasa; Mathieu Denoël; Olivier Guillaume; Delfí Sanuy; Adeline Loyau; Dirk S. Schmeller; Sebastian Steinfartz
• Keywords: Mountain range (options)

The Pyrenees represent a natural laboratory for biogeographic, evolutionary and ecological research of mountain fauna as result the high variety habitats profound effect glacial interglacial periods. There is paucity studies providing detailed insight into genetic processes better knowledge on patterns diversity how they are maintained under altitude conditions. This particular interest when considering course past climate conditions glaciations in species which considered site tenacious, with long generation times. Here we analyzed structure endemic Pyrenean brook newt (Calotriton asper) along its distribution range, special emphasis distinct habitat types (caves, streams, lakes), altitudinal geographical ranges, using total set 900 individuals from 44 different localities across range genotyped 19 microsatellite loci. We found evidence negative longitudinal positive gradient C. asper populations. fact that was markedly higher westwards accordance other species. However, impact seems to differ species, mostly amphibians. lower altitudes can act barrier probably because lowlands do not provide suitable asper. Regarding types, caves had significantly values compared streams or lakes. mean FST value relatively (0.304) maximum 0.771, suggesting highly structured population. Indeed, populations were grouped five subclusters, eastern (cluster 1) remained two subclusters central-western 2) three subclusters. increase isolation distance consistent population detected. In conclusion, be adapted habitats, western Pyrenees. terms conservation priority, consider more relevant reservoir diversity.