Evidence of complex phylogeographic structure for the threatened rodent Leopoldamys neilli, in Southeast Asia

Latinne Alice, Waengsothorn Surachit, Herbreteau Vincent, Michaux Johan. 2011. Evidence of complex phylogeographic structure for the threatened rodent Leopoldamys neilli, in Southeast Asia. Conservation Genetics, 12 (6) : 1495-1511.

Quartile : Q2, Sujet : BIODIVERSITY CONSERVATION / Quartile : Q4, Sujet : GENETICS & HEREDITY

Liste HCERES des revues (en SHS) : oui

Thème(s) HCERES des revues (en SHS) : Psychologie-éthologie-ergonomie

Résumé : 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.

Mots-clés Agrovoc : Rodentia, rongeur, karst

Mots-clés géographiques Agrovoc : Thaïlande, Asie du Sud-Est

Mots-clés complémentaires : Leopoldamys neilli

Classification Agris : L10 - Génétique et amélioration des animaux
L60 - Taxonomie et géographie animales

Champ stratégique Cirad : Axe 6 (2005-2013) - Agriculture, environnement, nature et sociétés

Auteurs et affiliations

• Latinne Alice, Université de Liège (BEL)
• Waengsothorn Surachit, TISTR (THA)
• Herbreteau Vincent, CIRAD-ES-UPR AGIRs (FRA)
• Michaux Johan, Montpellier SupAgro (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/562172/)

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