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Molecular phylogenetics and evolution v.118, 2018년, pp.306 - 317   SCI SCIE
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Geographic isolation and elevational gradients promote diversification in an endemic shrew on Sulawesi

Eldridge, Ryan A. (Museum of Natural Science, Louisiana State University, 119 Foster Hall, Baton Rouge, LA 70803, USA ) ; Achmadi, Anang S. (Museum Zoologicum Bogoriense, Research Center for Biology, Cibinong, Bogor 16911, Indonesia ) ; Giarla, Thomas C. (Museum of Natural Science, Louisiana State University, 119 Foster Hall, Baton Rouge, LA 70803, USA ) ; Rowe, Kevin C. (Sciences Department, Museum Victoria, Melbourne, VIC 3001, Australia ) ; Esselstyn, Jacob A. (Museum of Natural Science, Louisiana State University, 119 Foster Hall, Baton Rouge, LA 70803, USA ) ;
  • 초록  

    Abstract Phylogeographic research on endemic primates and amphibians inhabiting the Indonesian island of Sulawesi revealed the existence of seven areas of endemism (AoEs). Here, we use phylogenetic and population genetic analyses of one mitochondrial gene and 15 nuclear loci to assess geographic patterns of genetic partitioning in a shrew ( Crocidura elongata ) that is endemic to Sulawesi, but occurs across the island. We uncover substantial genetic diversity in this species both between and within AoEs, but we also identify close relationships between populations residing in different AoEs. One of the earliest divergences within C . elongata distinguishes a high-elevation clade from low-elevation clades. In addition, on one mountain, we observe three distinct genetic groups from low, middle, and high elevations, suggesting divergence along a single elevational gradient. In general, our results show that C. elongata , like several other Sulawesi endemic taxa, harbors extensive genetic diversity. This diversity is structured in part by known AoE boundaries, but also by elevational gradients and geographic isolation within AoEs. Highlights There are deep divergences within the Sulawesi shrew species, Crocidura elongata . Populations of C. elongata have diverged across geography and elevation on Sulawesi. Divergences do not strictly adhere to Area of Endemism patterns noted in other taxa. Graphical abstract [DISPLAY OMISSION]


  • 주제어

    Areas of endemism .   Biogeography .   Crocidura .   Population genetics .   Soricidae .   Wallacea.  

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