Little is known about the effect of quaternary climate variations on organisms that inhabited carbonate islands of the Pacific Ocean, although it has been suggested that one or several uplifted islands provided shelter for terrestrial birds when sea-level reached its highest. To test this hypothesis, we investigated the history of colonization of the Tuamotu reed-warbler (Acrocephalus atyphus) in southeastern Polynesia, and found high genetic structure between the populations of three elevated carbonate islands. Estimates of time since divergence support the hypothesis that these islands acted as refugia during the last interglacial maximum. These findings are particularly important for defining conservation priorities on atolls that endure the current trend of sea-level rise owing to global warming.
- MICROSATELLITE NULL ALLELES
[Cibois, Alice] Nat Hist Museum Geneva, Dept Mammal & Ornithol, CH-1211 Geneva 6, Switzerland; [Thibault, Jean-Claude; Pasquet, Eric] Museum Natl Hist Nat, Dept Systemat & Evolut, Origine Struct & Evolut Biodivers UMR7205, F-75231 Paris, France; [Thibault, Jean-Claude; Pasquet, Eric] CNRS, UMS2700, Serv Systemat Mol, F-75005 Paris, France
Cibois, A (reprint author), Nat Hist Museum Geneva, Dept Mammal & Ornithol, CP 6434, CH-1211 Geneva 6, Switzerland.
- Institut de Systématique, Evolution, Biodiversité (ISYEB), UMR7205
- Outils et Méthodes de la Systématique Intégrative (OMSI), UMS2700