Evidence of complex phylogeographic structure for the threatened rodent Leopoldamys neilli, in Southeast Asia
2011
Latinne, Alice | Waengsothorn, Surachit | Herbreteau, Vincent | Michaux, Johan | Institut de Botanique ; Université de Liège = University of Liège = Universiteit van Luik = Universität Lüttich (ULiège) | Thailand Institute of Scientific and Technological Research | Animal et gestion intégrée des risques (UPR AGIRs) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad) | Centre de Biologie pour la Gestion des Populations (UMR CBGP) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Université de Montpellier (UM)-Institut de Recherche pour le Développement (IRD [Occitanie])-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro) | We thank Boonchai Tontan who worked hard in the field and help us to collect the samples used in this study. We are grateful to G. Vanhamel for his help in the lab. We express gratitude to S. Jittapalapong for his administrative help. We thank Drs D. Aigoin, C. Berthouly, C. Ek, S. Morand, M. Pages for their great help and/or comments on the manuscript. We thank E. Latinne for her help in the drafting of the figures. We wish to acknowledge Dr Andy Jennings for English corrections and scientific comments. This work was supported by a Belgian FRS-FNRS (Fonds de la Recherche Scientifique) fellowship to A. Latinne (mandate "aspirant") and to J.R. Michaux (mandate "chercheur qualifie"), and a financial grant from the Belgian FNRS (credits pour brefs sejours a l'etranger to A. Latinne), from the University of Liege (Patrimoine) and from the Communaute francaise de Belgique. This study is part of the "CE-RoPath project" (Community Ecology of Rodents and their Pathogens in South-East Asia: effects of biodiversity changes and implications in health ecology), ANR Biodiversity ANR 07 BDIV 012, funded by the French National Agency for Research.
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Mostrar más [+] Menos [-]Inglés. Leopoldamys neilli is a threatened murine rodent species endemic to limestone karsts of Thailand. We have studied the phylogeography of L. neilli using two mitochondrial markers (cytb, COI) and one nuclear fragment (bfibr), in order to assess the influence of its endemicity to karst habitat. One hundred fifteen individuals of L. neilli were collected in 20 localities throughout the geographic range of this species in Thailand. Our study revealed strong geographic structure of the mtDNA genetic diversity: six highly differentiated, allopatric genetic lineages were observed in our dataset. They exhibit a very high degree of genetic divergence, low gene flow among lineages and low levels of haplotype and nucleotide diversities within lineages. Our results suggest that L. neilli's populations are highly fragmented due to the scattered distribution of its karst habitat. The most divergent lineage includes the populations from western Thailand, which have been separated from the other genetic lineages since at least the Early Pleistocene. The other lineages are more closely related and have diverged since the Middle Pleistocene. This study revealed an unexpected high level of genetic differentiation within L. neilli and highlighted the high endemicity of this species to limestone karsts. Our results enhance the importance of protecting limestone habitats to preserve not only the species but also intraspecific diversity.
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