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The evolution of north‐east A tlantic gadfly petrels using statistical phylogeography
Author(s) -
Gangloff B.,
Zino F.,
Shirihai H.,
GonzálezSolís J.,
Couloux A.,
Pasquet E.,
Bretagnolle V.
Publication year - 2013
Publication title -
molecular ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.619
H-Index - 225
eISSN - 1365-294X
pISSN - 0962-1083
DOI - 10.1111/mec.12119
Subject(s) - biology , phylogeography , archipelago , population , petrel , zoology , ecology , evolutionary biology , subspecies , gene flow , phylogenetics , genetics , genetic variation , gene , seabird , demography , sociology , predation
Macaronesia (north‐east A tlantic archipelagos) has been host to complex patterns of colonization and differentiation in many groups of organisms including seabirds such as gadfly petrels (genus P terodroma ). Considering the subspecies of widely distributed soft‐plumaged petrel for many years, the taxonomic status of the three gadfly petrel taxa breeding in M acaronesia is not yet settled, some authors advocating the presence of three, two or one species. These birds have already been the subject of genetic studies with only one mt DNA gene and relatively modest sample sizes. In this study, using a total of five genes (two mitochondrial genes and three nuclear introns), we investigated the population and phylogeographical histories of petrel populations breeding on M adeira and C ape V erde archipelagos. Despite confirming complete lineage sorting with mt DNA , analyses with nuc DNA failed to reveal any population structuring and I solation with M igration analysis revealed the absence of gene flow during the differentiation process of these populations. It appears that the three populations diverged in the late Pleistocene in the last 150 000 years, that is 10 times more recently than previous estimates based solely on one mt DNA gene. Finally, our results suggest that the M adeira petrel population is ancestral rather than that from C ape V erde. This study strongly advocates the use of nuclear loci in addition to mt DNA in demographical and phylogeographical history studies.