| Revue: | Genetics and molecular biology |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000388402 |
| ISSN: | 1415-4757 |
| Autores: | Jordao, Juliana Costa1 Bondioli, Ana Cristina Vigliar2 Guebert, Flavia Maria3 Thoisy, Benoit de4 Toledo, Lurdes Foresti de Almeida1 |
| Instituciones: | 1Universidade de Sao Paulo, Instituto de Biociencias, Sao Paulo. Brasil 2Secretaria de Agricultura e Abastecimento, Agencia Paulista de Tecnologia dos Agronegocios, Cananeia, Sao Paulo. Brasil 3Universidade Federal de Pernambuco, Departamento de Oceanografia, Recife, Pernambuco. Brasil 4Institut Pasteur de la Guyane, Cayena, Guayana Francesa. Francia |
| Año: | 2015 |
| Periodo: | Sep |
| Volumen: | 38 |
| Número: | 3 |
| Paginación: | 346-352 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, aplicado |
| Resumen en inglés | Sea turtles are marine reptiles that undertake long migrations through their life, with limited information regarding juvenile stages. Feeding grounds (FGs), where they spend most of their lives, are composed by individuals from different natal origins, known as mixed stock populations. The aim of this study was to assess genetic composition, natal origins and demographic history of juvenile green turtles (Chelonia mydas) at the Paranaguá Estuarine Complex (PEC), Brazil, considered a Natural World Heritage site. Tissue samples of stranded animals were collected (n = 60), and 700 bp mitochondrial DNA sequences were generated and compared to shorter sequences from previously published studies. Global exact tests of differentiation revealed significant differences among PEC and the other FGs, except those at the South Atlantic Ocean. Green turtles at PEC present genetic signatures similar to those of nesting females from Ascension Island, Guinea Bissau and Aves Island/Surinam. Population expansion was evidenced to have occurred 20–25 kYA, reinforcing the hypothesis of recovery from Southern Atlantic refugia after the last Glacial Maximum. These results contribute to a better understanding of the dynamics of green turtle populations at a protected area by providing knowledge on the dispersion patterns and reinforcing the importance of the interconnectivity between nesting and foraging populations |
| Disciplinas: | Biología |
| Palabras clave: | Genética, Reptiles, Tortugas marinas, Genética de poblaciones, Areas de alimentación, Diversidad genética, Chelonia mydas, Chelonidae |
| Keyword: | Biology, Genetics, Reptiles, Marine turtles, Population genetics, Feeding grounds, Genetic diversity, Chelonia mydas, Chelonidae |
| Texte intégral: | Texto completo (Ver HTML) |
