Términos relacionados

2 resultados encontrados para: AUTOR: Díaz Jaimes, Píndaro
  • «
  • 1 de 1
  • »
1.
- Artículo con arbitraje
*Solicítelo con su bibliotecario/a
Genetic structure, origin, and connectivity between nesting and foraging areas of hawksbill turtles of the Yucatan Peninsula: a study for conservation and management
Labastida Estrada, Elizabeth (autora) ; Machkour M'Rabet, Salima (autora) ; Díaz Jaimes, Píndaro (autor) ; Cedeño-Vázquez, J.R. (autor) ; Hénaut, Yann (autor) ;
Contenido en: Aquatic Conservation: Marine and Freshwater Ecosystems Vol. 29, no. 2 (February 2019), p. 211–222 ISSN: 1099-0755
Nota: Solicítelo con su bibliotecario/a
Resumen en: Inglés |
Resumen en inglés

1. Anthropogenic activities have resulted in declines in many marine turtle populations. Their complex life cycle (e.g. female philopatry, hatchling migration, adult movements between breeding and foraging areas) makes it difficult to fully understand some of the biological implications of human impacts on their populations, but genetic tools can play a major role in understanding population dynamics and thus improve conservation and management strategies. 2. Using the mitochondrial DNA control region, this study examines the composition, population structure, and connectivity between rookeries and foraging aggregations, in addition to their relationship with Atlantic rookeries and foraging areas of the hawksbill turtle in the Yucatan Peninsula. 3. Haplotype composition of rookeries showed EiA22, EiA39, and EiA41 as endemic haplotypes and revealed a segregation between the Gulf of Mexico and the Yucatan and Quintana Roo rookeries, defining two management units. Foraging aggregations present 15 haplotypes, some common for Atlantic and others for Mexican rookeries. Considering the Gulf of Mexico versus the Mexican Caribbean, significant population genetic structure was revealed, inferring a differential recruitment of hawksbill turtles. 4. Rookery‐centric mixed‐stock analysis reveals a high contribution of Mexican turtles to local foraging aggregations, principally in the Gulf of Mexico. Foraging‐groundcentric mixed‐stock analysis showed that the Gulf of Mexico foraging aggregation is predominantly composed of individuals from local rookeries, whereas Mexican Caribbean foraging groups have a mixed composition with individuals from Barbados, Brazil, and Puerto Rico rookeries. The connectivity between rookeries and foraging aggregations suggests that the ocean currents and swimming behaviour influence the distribution of hawksbill turtles.

5. Our results highlighted the importance in identifying management units in nesting and foraging areas to develop monitoring and management programmes at appropriate geographic scales. In addition, understanding turtle habitat connectivity will allow for prioritized conservation actions considering particular threats, emphasizing the need for both national and international collaboration for conservation of this endangered species.


2.
Artículo
*En hemeroteca, SIBE-Villahermosa
Phylogenetic relationships among five marine Catfish species (Pisces: Ariidae) from Mexico
Tenorio Colín, Guadalupe ; Rodríguez Estrada, Uriel (coaut.) ; Uribe Alcocer, Manuel (coaut.) ; Díaz Jaimes, Píndaro (coaut.) ;
Contenido en: Hidrobiológica Vol. 20, no. 3 (diciembre 2010), p. 266-274 ISSN: 0188-8897
Bibliotecas: Villahermosa
Cerrar
SIBE Villahermosa
52271-10 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-Villahermosa
PDF
Resumen en: Español | Inglés |
Resumen en español

La sistemática de los bagres marinos pertenecientes a la familia Ariidae es controversial, porque hasta la actualidad, no se conoce con exactitud el número de especies y géneros existentes en la familia, ni las relaciones que se establecen entre ellos. En el presente trabajo se estudiaron las relaciones filogenéticas entre cinco especies representativas de bagres marinos de la familia Ariidae, de ambas costas del Pacífico y del Atlántico Mexicano. El mencionado análisis se llevó a cabo mediante el análisis de la variabilidad en 21 loci aloenzimáticos y a través de la comparación de patrones electroforéticos de proteínas totales de músculo. Los niveles de divergencia interespecífica obtenidos por ambos métodos electroforéticos mostraron una clara separación entre los géneros Cathorops, Bagre y Ariopsis, así como entre las especies estudiadas de Cathorops y Ariopsis con Bagre marinus, mostrando una mayor similitud genética con el grupo Ariopsis. Los resultados obtenidos en este estudio contribuyen al establecimiento de la presencia de estas especies a lo largo de las costas del Golfo de México.

Resumen en inglés

The systematics of the marine catfish of the family Ariidae is controversial because at the present time the number of species and genera in the family, or their relationships, remain uncertain. Phylogenetic relationships among five representative species of marine catfish of the family Ariidae from both the Pacific and the Atlantic coasts of Mexico were assessed by the analysis of the variability in 21 alloenzymatic loci, and by the comparison of the electrophoretic patterns of whole muscle proteins. Interspecific genetic divergence levels obtained by both electrophoretic methods showed a clear separation among the genera Cathorops, Bagre and Ariopsis, as well as in the studied species of Cathorops and Ariopsis, with Bagre marinus showing a greater genetic similarity with the Ariopsis group. Finally, our results contribute to the definition of the presence of this species in the coasts of the Gulf of Mexico