The Influence of Interspecific Competition and Host Preference on the Phylogeography of Two African Ixodid Tick Species
Resumen: A comparative phylogeographic study on two economically important African tick species, Amblyomma hebraeum and Hyalomma rufipes was performed to test the influence of host specificity and host movement on dispersion. Pairwise AMOVA analyses of 277 mtDNA COI sequences supported significant population differentiation among the majority of sampling sites. The geographic mitochondrial structure was not supported by nuclear ITS-2 sequencing, probably attributed to a recent divergence. The three-host generalist, A. hebraeum, showed less mtDNA geographic structure, and a lower level of genetic diversity, while the more host-specific H. rufipes displayed higher levels of population differentiation and two distinct mtDNA assemblages (one predominantly confined to South Africa/Namibia and the other to Mozambique and East Africa). A zone of overlap is present in southern Mozambique. A mechanistic climate model suggests that climate alone cannot be responsible for the disruption in female gene flow. Our findings furthermore suggest that female gene dispersal of ticks is more dependent on the presence of juvenile hosts in the environment than on the ability of adult hosts to disperse across the landscape. Documented interspecific competition between the juvenile stages of H. rufipes and H. truncatum is implicated as a contributing factor towards disrupting gene flow between the two southern African H. rufipes genetic assemblages.
Idioma: Inglés
DOI: 10.1371/journal.pone.0076930
Año: 2013
Publicado en: PLoS One 8, 10 (2013), e76930 [12 pp]
ISSN: 1932-6203

Factor impacto: 3.534 (2013)
Categ. JCR: MULTIDISCIPLINARY SCIENCES rank: 8 / 56 = 0.143 (2013) - Q1 - T1
Tipo y forma: Revisión (Versión definitiva)
Área (Departamento): Sanidad Animal (Departamento de Patología Animal)

Creative Commons Debe reconocer adecuadamente la autoría, proporcionar un enlace a la licencia e indicar si se han realizado cambios. Puede hacerlo de cualquier manera razonable, pero no de una manera que sugiera que tiene el apoyo del licenciador o lo recibe por el uso que hace.

Exportado de SIDERAL (2017-11-28-13:52:28)

Este artículo se encuentra en las siguientes colecciones:
Artículos > Artículos por área > Sanidad Animal

 Registro creado el 2017-11-28, última modificación el 2017-11-29

Versión publicada:
Valore este documento:

Rate this document:
(Sin ninguna reseña)