Connectivity, population structure, and conservation of Ecuadorian green sea turtles

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dc.careerEscuela de Ciencias Biológicases
dc.category.authorprincipales
dc.contributor.authorTorres Carvajal, Lenin Omar
dc.contributor.correspondingTorres Carvajal, Lenin Omares
dc.countryEcuadores
dc.date.accessioned2023-11-04T21:46:05Z
dc.date.available2023-11-04T21:46:05Z
dc.date.issued2017
dc.dedication.authorTCes
dc.description.abstractStudies of highly migratory species that increase our understanding of the dynamics of genetic diversity, migratory routes, and genetic connectivity are essential for informing conservation actions. Genetic data for green turtles Chelonia mydas from Ecuador have only been available from Galápagos Islands (GPS) rookeries, but not from foraging aggregations. Furthermore, green turtles from habitats associated with mainland Ecuador (Machalilla National Park; MNP) have not been sampled. To assess the genetic relationships between nesting and foraging aggregations from these 2 regions and other regional populations, the mitochondrial DNA (mtDNA) control region was sequenced from 133 turtles. Conventional FST (haplotype frequency) and ΦST (sequence-based) values were low and non-significant between Ecuadorian rookeries, suggesting high connectivity between these sites located ca. 1000 km apart. Mixed stock analysis (MSA) indicated a dominant (>94%) GPS-MNP contribution to both foraging grounds, with small and nearly negligible contributions from other rookeries in the region (e.g. Costa Rica and Mexico). While orphan haplotypes were not included in the MSA because their rookery of origin is not known, their close genetic relationships to Western and Central Pacific mtDNA clades suggests that a relatively large percentage of turtles at the combined foraging sites (>10%) have been involved in transoceanic migration events. The genetic links between GPS and MNP C. mydas nesting populations revealed by our study highlight the need to incorporate the nesting populations from coastal Ecuador in more comprehensive future conservation planning.es
dc.facultyCiencias Exactas y Naturaleses
dc.id.author1712335916es
dc.id.type1es
dc.identifier.doihttps://doi.org/10.3354/esr00809es
dc.identifier.issn1863-5407
dc.identifier.issn1613-4796
dc.identifier.urihttp://www.int-res.com/abstracts/esr/v32/p251-264/es
dc.identifier.urihttps://repositorio.puce.edu.ec/handle/123456789/6119
dc.indexed.databaseScimago Journal Rankes
dc.list.authorsChaves, J., Peña, M., Valdés-Uribe, J., Muñoz-Pérez, J., Vallejo, F., Heidemeyer, M., y Torres-Carvajal, O.es
dc.magazine.pageRange251–264es
dc.magazine.titleEndangered Species Researches
dc.magazine.volumeChapter32es
dc.rightsOpenAccesses
dc.statepublishedes
dc.subjectEstructura de la poblaciónes
dc.subjectConservación de la naturalezaes
dc.subjectTortugas marinases
dc.titleConnectivity, population structure, and conservation of Ecuadorian green sea turtleses
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