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Molecular characterization of the common snook, Centropomus undecimalis (Bloch, 1792) in the Usumacinta Basin

Terán Martínez, Jazmín [autora] | Rodiles Hernández, María del Rocío, 1956- [autora] | Garduño Sánchez, Marco A. A [autor] | Ornelas García, Claudia Patricia [autora].
Tipo de material: Artículo en línea Artículo en línea Tipo de contenido: Texto Tipo de medio: Computadora Tipo de portador: Recurso en línea | In total, 81 individuals of C. undecimalis were collected from 15 sampling localities along the Usumacinta River basin in Mexico, during the rainy and dry seasons between February 2015 and March 2019.Tema(s): Centropomus undecimalis | Variación genética | Dinámica de la población | Conservación de recursos pesquerosTema(s) en inglés: Centropomus undecimalis | Genetic variation | Population dynamics | Resources fisheries conservationDescriptor(es) geográficos: Reserva de la Biosfera Pantanos de Centla (Tabasco, México) | Área de Protección de Flora y Fauna Laguna de Términos (Campeche, México) | Cuenca del Río Usumacinta Nota de acceso: Acceso en línea sin restricciones En: Diversity. Volumen 13, número 347 (July 2021), páginas 1-20. --ISSN: 1424-2818Número de sistema: 61535Resumen:
Inglés

The common snook is one of the most abundant and economically important species in the Usumacinta basin in the Gulf of Mexico, which has led to overfishing, threatening their populations. The main goal of the present study was to assess the genetic diversity and structure of the common snook along the Usumacinta River in order to understand the population dynamics and conservation status of the species. We characterized two mitochondrial markers (mtCox1 and mtCytb) and 11 microsatellites in the Usumacinta basin, which was divided into three zones: rainforest, floodplain and river delta. The mitochondrial data showed very low diversity, showing some haplotypic diversity differences between the rainforest and delta zones. In contrast, we consistently recovered two genetic clusters in the Usumacinta River basin with the nuclear data in both the DAPC and STRUCTURE analyses. These results were consistent with the AMOVA analyses, which showed significant differences among the genetic clusters previously recovered by DAPC and STRUCTURE. In terms of diversity distribution, the floodplain zone corresponded to the most diverse zone according to the mitochondrial and nuclear data, suggesting that this is a transition zone in the basin. Our results support the relevance of the molecular characterization and monitoring of the fishery resources at the Usumacinta River to better understand their connectivity, which could help in their conservation and management.

Recurso en línea: https://www.mdpi.com/1424-2818/13/8/347
Lista(s) en las que aparece este ítem: Producción Rocío Rodiles Hernández | Reserva de la Biosfera Pantanos de Centla | María del Rocío Rodiles Hernández
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Acceso en línea sin restricciones

The common snook is one of the most abundant and economically important species in the Usumacinta basin in the Gulf of Mexico, which has led to overfishing, threatening their populations. The main goal of the present study was to assess the genetic diversity and structure of the common snook along the Usumacinta River in order to understand the population dynamics and conservation status of the species. We characterized two mitochondrial markers (mtCox1 and mtCytb) and 11 microsatellites in the Usumacinta basin, which was divided into three zones: rainforest, floodplain and river delta. The mitochondrial data showed very low diversity, showing some haplotypic diversity differences between the rainforest and delta zones. In contrast, we consistently recovered two genetic clusters in the Usumacinta River basin with the nuclear data in both the DAPC and STRUCTURE analyses. These results were consistent with the AMOVA analyses, which showed significant differences among the genetic clusters previously recovered by DAPC and STRUCTURE. In terms of diversity distribution, the floodplain zone corresponded to the most diverse zone according to the mitochondrial and nuclear data, suggesting that this is a transition zone in the basin. Our results support the relevance of the molecular characterization and monitoring of the fishery resources at the Usumacinta River to better understand their connectivity, which could help in their conservation and management. eng

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