title: Contrasted patterns of genetic differentiation across eight bird species in the Lesser Antilles.
abstract: Archipelagoes are considered as "natural laboratories" for studying processes that shape the distribution of diversity. The Lesser Antilles provide a favorable geographical context for divergence to occur. However, although morphological subspecies have been described across this archipelago in numerous avian species, the potential for the Lesser Antilles in driving intra-specific genetic divergence in highly mobile organisms such as birds remains understudied. Here, we assessed level of intra-specific genetic diversity and differentiation between three islands of the Lesser Antilles (Guadeloupe, Dominica and Martinique) using a multi-species approach on eight bird species. For each species, we built a set of microsatellite markers from cross-species amplifications. Significant patterns of inter-island and/or within-island genetic differentiation were detected in all species. However, levels of intra-specific genetic differentiation among the eight bird species were not always consistent with the boundaries of subspecies previously described in the sampled islands. These results suggest different histories of colonization/expansion and/or different species-specific ecological traits affecting gene flow, advocating for multi-species studies of historical and contemporary factors shaping the distribution of diversity on islands.
authors.affiliation: CNRS, Biogéosciences UMR6282, Univ. Bourgogne Franche-Comté, 21000, Dijon, France. aurelie.khimoun@gmail.com.
authors.forename: Aurélie
authors.initials: A
authors.lastname: Khimoun
authors.affiliation: CNRS, Biogéosciences UMR6282, Univ. Bourgogne Franche-Comté, 21000, Dijon, France.
authors.forename: Emilie
authors.initials: E
authors.lastname: Arnoux
authors.affiliation: CNRS, Biogéosciences UMR6282, Univ. Bourgogne Franche-Comté, 21000, Dijon, France.
authors.forename: Guillaume
authors.initials: G
authors.lastname: Martel
authors.affiliation: CNRS, Biogéosciences UMR6282, Univ. Bourgogne Franche-Comté, 21000, Dijon, France.
authors.forename: Alexandre
authors.initials: A
authors.lastname: Pot
authors.affiliation: CNERA Avifaune migratrice, Office National de la Chasse et de la Faune Sauvage, Station biologique de Chizé, Carrefour de la Canauderie, 79360, Villiers en Bois, France.
authors.forename: Cyril
authors.initials: C
authors.lastname: Eraud
authors.affiliation: Cellule Technique des Antilles Françaises, Office National de la Chasse et de la Faune Sauvage, 5 rue de la Dorade, 79229, Les Trois-Ilets, Martinique, France.
authors.forename: Béatriz
authors.initials: B
authors.lastname: Condé
authors.affiliation: CNRS, Biogéosciences UMR6282, Univ. Bourgogne Franche-Comté, 21000, Dijon, France.|Research Centre in Biodiversity and Genetic Resources, CIBIO, Campus Agrário de Vairão, Rua Padre Armando Quintas, 4485-661, Vairão, Portugal.
authors.forename: Maxime
authors.initials: M
authors.lastname: Loubon
authors.affiliation: CNRS, Biogéosciences UMR6282, Univ. Bourgogne Franche-Comté, 21000, Dijon, France.|Research Centre in Biodiversity and Genetic Resources, CIBIO, Campus Agrário de Vairão, Rua Padre Armando Quintas, 4485-661, Vairão, Portugal.
authors.forename: Franck
authors.initials: F
authors.lastname: Théron
authors.affiliation: Research Centre in Biodiversity and Genetic Resources, CIBIO, Campus Agrário de Vairão, Rua Padre Armando Quintas, 4485-661, Vairão, Portugal.
authors.forename: Rita
authors.initials: R
authors.lastname: Covas
authors.affiliation: CNRS, Biogéosciences UMR6282, Univ. Bourgogne Franche-Comté, 21000, Dijon, France.
authors.forename: Bruno
authors.initials: B
authors.lastname: Faivre
authors.affiliation: CNRS, Biogéosciences UMR6282, Univ. Bourgogne Franche-Comté, 21000, Dijon, France.
authors.forename: Stéphane
authors.initials: S
authors.lastname: Garnier
mesh_terms: D000818:Animals; D001717:Birds / Q000145:classification / Q000235:genetics*; D019424:Dominica; D056426:Genetic Loci; D049810:Genetic Speciation; D014644:Genetic Variation; D005828:Genetics, Population; D019430:Guadeloupe; D062312:Islands; D008395:Martinique; D018895:Microsatellite Repeats; D013045:Species Specificity
keywords: Cross-species amplification; Genetic structure; Island; Microsatellite; Subspecies