@article{fdi:010070030,
  title = {{P}hylogeography of the sergeants {A}budefduf sexfasciatus and {A}. vaigiensis reveals complex introgression patterns between two widespread and sympatric {I}ndo-{W}est {P}acific reef fishes},
  author = {{B}ertrand, {J}. {A}. {M}. and {B}orsa, {P}hilippe and {C}hen, {W}. {J}.},
  editor = {},
  language = {{ENG}},
  abstract = {{O}n evolutionary timescales, sea level oscillations lead to recurrent spatio-temporal variation in species distribution and population connectivity. {I}n this situation, applying classical concepts of biogeography is challenging yet necessary to understand the mechanisms underlying biodiversity in highly diverse marine ecosystems such as coral reefs. {W}e aimed at studying the outcomes of such complex biogeographic dynamics on reproductive isolation by sampling populations across a wide spatial range of a species-rich fish genus: the sergeants ({P}omacentridae: {A}budefduf). {W}e generated a mutlilocus data set that included ten morpho-species from 32 {I}ndo-{W}est {P}acific localities. {W}e observed a pattern of mito-nuclear discordance in two common and widely distributed species: {A}budefduf sexfasciatus and {A}budefduf vaigiensis. {T}he results showed three regional sublineages ({I}ndian {O}cean, {C}oral {T}riangle region, western {P}acific) in {A}. sexfasciatus (0.6-1.5% divergence at cytb). {T}he other species, {A}. vaigiensis, is polyphyletic and consists of three distinct genetic lineages ({A}, {B} and {C}) (9% divergence at cytb) whose geographic ranges overlap. {A}lthough {A}. vaigiensis {A} and {A}. sexfasciatus were found to be distinct based on nuclear information, {A}. vaigiensis {A} was found to be nested within {A}. sexfasciatus in the mitochondrial gene tree. {A}. sexfasciatus from the {C}oral {T}riangle region and {A}. vaigiensis {A} were not differentiated from each other at the mitochondrial locus. {W}e then used coalescent-based simulation to characterize a spatially widespread but weak gene flow between the two species. {W}e showed that these fishes are good candidates to investigate the evolutionary complexity of the discrepancies between phenotypic and genetic similarity in closely related species.},
  keywords = {coral reef ; cryptic lineage ; interspecific gene flow ; mito-nuclear ; discordance ; multilocus phylogeny ; {P}omacentridae ; {OCEAN} {INDIEN} ; {PACIFIQUE}},
  booktitle = {},
  journal = {{M}olecular {E}cology},
  volume = {26},
  numero = {9},
  pages = {2527--2542},
  ISSN = {0962-1083},
  year = {2017},
  DOI = {10.1111/mec.14044},
  URL = {https://www.documentation.ird.fr/hor/fdi:010070030},
}