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http://cibnor.repositorioinstitucional.mx/jspui/handle/1001/2388| Genetic structure and historical and contemporary gene flow of Astyanax mexicanus in the Gulf of Mexico slope: a microsatellite-based analysis | |
| RODOLFO PEREZ RODRIGUEZ SARAI ESQUIVEL BOBADILLA ADONAJI MADELEINE OROZCO RUIZ JOSE LUIS OLIVAS HERNANDEZ FRANCISCO JAVIER GARCIA DE LEON | |
| Acceso Abierto | |
| Atribución-NoComercial-SinDerivadas | |
| URL: https://peerj.com/articles/10784.pdf DOI: 10.7717/peerj.10784 ISSN: 2167-8359 | |
| Genetic structure , Historical and cotemporary gene flow, Microsatellites loci, Gulf of Mexico slope, Surface and cave populations, Astyanax mexicanus | |
| "Background. Astyanax mexicanus from the river basins of the Gulf of Mexico slope are small freshwater fish that usually live in large groups in different freshwater environments. The group is considered successful due to its high capacity for dispersal and adaptation to different habitats, and the species present high morphological variability throughout their distribution in Mexico. This has produced the most extreme morphotype of the group; the hypogeous or troglobite, which has no eyes or coloration, and is probably the cause of taxonomic uncertainty in the recognition of species across the entire range. Most studies of A. mexicanus have mainly focused on cave individuals, as well as their adjacent surface locations, providing an incomplete evolutionary history, particularly in terms of factors related to dispersal and the potential corridors used, barriers to gene flow, and distribution of genetic variability. The aim of the present study is to determine the population structure and the degree and direction of genetic flow in this complex taxonomic group, incorporating geographic locations not previously included in analyses using microsatellite loci. Our aim is to contribute to the knowledge of the intricate evolutionary history of A. mexicanus throughout most of its range. Methods. The present study included a set of several cave and surface locations of A. mexicanus, which have been widely sampled along the Gulf of Mexico slope, in a genetic population analysis using 10 microsatellite loci. Results. Ten genetic populations or lineages were identified. In these populations, gene flow was recorded at two time periods. Historical gene flow, both inter and intra-basin, was observed among surface populations, from surface to cave populations, and among cave populations, whereas recording of contemporary gene flow was limited to intrabasin exchanges and observed among surface populations, surface to cave populations, and cave populations." | |
| PeerJ | |
| 2021 | |
| Artículo | |
| PeerJ | |
| Inglés | |
| Pérez-Rodríguez R, Esquivel-Bobadilla S, Orozco-Ruíz AM, Olivas-Hernández JéL, García-De León FJ. 2021. Genetic structure and historical and contemporary gene flow of Astyanax mexicanus in the Gulf of Mexico slope: a microsatellite-based analysis. PeerJ 9:e10784 http://doi.org/10.7717/peerj.10784 | |
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| Versión publicada | |
| publishedVersion - Versión publicada | |
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