Cryptic phylogeographic history sheds light on the generation of species diversity in sky‐island mountains

• DOI: 10.1111/jbi.13664
• Publication Date: 2019-08-13T04:36:33Z
• Authors: Kai He; Eliécer E. Gutiérrez; Neander M. Heming; Klaus‐Peter Koepfli; Tao Wan; Shuiwang He; Wei Jin; Shao‐Ying Liu; Xue‐Long Jiang
• Keywords: Approximate Bayesian Computation; Environmental niche modelling; Endemism; Archipelago

Abstract Aim The aim of this study was to conduct comprehensive phylogeographic and demographic analyses examine the degree which topographic climatic conditions have affected patterns diversification migration in a strictly montane inhabitant, long‐tailed mole ( Scaptonyx fusicaudus ). Location mountains south‐western China adjacent including Mts. Bashan, Dalou Qinling also known as sky islands China. Taxon S. ), semi‐fossorial mammal distributed China, is relict species sole representative tribe Scaptonychini. Methods We sequenced one mitochondrial six nuclear genes from 113 samples across species’ range. estimated phylogenetic relationships divergence times, conducted genetic structuring delimitation using multiple approaches used Approximate Bayesian Computation test potential gene flow. ecological niche modelling predict distribution present, last glacial maximum interglacial (LIG). Results comprises minimum 17 operational taxonomic units are isolated different mountain ranges. lowlands large rivers act barriers dispersal, evolutionary lineages for up 11 million years. Long‐distance dispersal evident among few discrete archipelagos. Suitable during LIG limited only sites, thus geographically restricting stable areas geological periods (from present). Main conclusions For low‐vagility species, complex topography has promoted exceptional through combination eco‐environmental stability well geographic fragmentation. acted buffer against climate change, provided continuously suitable habitats since early Late Miocene, supporting hypothesis that constitute “museums” ancient lineages. Lowlands river valleys preventing flow, while archipelagos could stepping stones facilitate dispersal.