Isolation and characterization of 50 microsatellite loci for two shearwater species, Ardenna pacifica and Puffinus bailloni
2022
Teixeira, Helena | Le Corre, Matthieu | Jaeger, Audrey | Choeur, Arthur | Saunier, Merlène | Couzi, François-Xavier | Tatayah, Vikash | Shah, Nirmal Jivan | Nicoll, Malcolm | Avargues, Naïs | Humeau, Laurence | Ecologie marine tropicale dans les Océans Pacifique et Indien (ENTROPIE [Réunion]) ; Institut de Recherche pour le Développement (IRD)-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS) | Société d'études ornithologiques de la Réunion (SEOR) | Mauritian Wildlife Foundation ; Mauritian Wildlife Foundation | Nature Seychelles ; Nature Seychelles | Zoological Society of London - ZSL (UNITED KINGDOM) ; Zoological Society of London | Peuplements végétaux et bioagresseurs en milieu tropical (UMR PVBMT) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD)-Université de La Réunion (UR)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | The research was supported by the FEDER Smac (20202022, N degrees RE0022954) and the Bertarelli Foundation as part of the Bertarelli Programme in Marine Science (GRANT AGREEMENT REUNION-2021-822916). Field work at Europa and Round Island was funded by the Consortium Iles Eparses (ECOMIE Programme) and the Pew Fellowship Award in Marine Conservation of MLC, respectively. Field work in the Seychelles was conducted under the Project "Wild Fauna Indian Ocean" (NRDC/0293). Arthur Choeur and Merlene Saunier were supported by Region Reunion, and European Social Fund (ESF) PhD Studentships.
International audience
Afficher plus [+] Moins [-]anglais. Background:Shearwaters (order Procellariiformes) are an excellent study system to investigate the genetic consequences of the co-called “seabird paradox”, as they are able to disperse long distances but many species exhibit natal and breeding philopatry. However, few microsatellite markers are currently available for these taxa, hampering genetic inferences.Methods and results:In this study, 25 novel microsatellite loci were isolated and characterized for each of two distantly related shearwater species: the wedge-tailed shearwater (Ardenna pacifica) and the tropical shearwater (Puffinus bailloni). Polymorphism tests were performed for a total of 91 A. pacifica individuals sampled at Reunion and Round Island, and 48 P. bailloni individuals from Reunion and Europa Island, in the western Indian Ocean. The analyses revealed 23 polymorphic loci for A. pacifica, with the number of alleles per locus (Na) ranging from 2 to 8 (mean = 3.957 ± 0.364). Nineteen polymorphic loci were found for P. bailloni, with Na varying from two to five (mean = 3.053 ± 0.247). The observed heterozygosity (Ho) was relatively low for the two species, with Ho ranging from 0.022 to 0.725 (mean = 0.326 ± 0.044) for A. pacifica and from 0.021 to 0.688 (mean = 0.271 ± 0.051) for P. bailloni, but comparable to the estimates available for other Puffinus species.Conclusions:The new microsatellite loci provide a valuable tool for further population genetic studies, and will allow for design of effective conservation and management plans for A. pacifica, P. bailloni and other closely-related species.
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