Título

Introgressive hybridization in a trophically polymorphic cichlid

Autor

C. Darrin Hulsey

FRANCISCO JAVIER GARCIA DE LEON

Nivel de Acceso

Acceso Abierto

Licencia

http://creativecommons.org/licenses/by-nc-nd/4.0

Referencia de publicación

doi: DOI: https://doi.org/10.1002/ece3.841

URL/URL: https://onlinelibrary.wiley.com/doi/10.1002/ece3.841

ISSN/ISSN: 20457758

Materias

Gene flow, Mexico, pharyngeal jaw, trophic adaptation - (AUTOR) BIOLOGÍA Y QUÍMICA - (CTI) CIENCIAS DE LA VIDA - (CTI) BIOLOGÍA ANIMAL (ZOOLOGÍA) - (CTI) GENÉTICA ANIMAL - (CTI) GENÉTICA ANIMAL - (CTI)

Resumen o descripción

"Trophically polymorphic species could represent lineages that are rapidly diverging along an ecological axis or could phenotypically mark the collapse of species through introgressive hybridization. We investigated patterns of intro- gression between the trophically polymorphic cichlid fish Herichthys minckleyi and its relative H. cyanoguttatus using a combination of population genetics and species tree analyses. We first examined the distribution of mitocondrial haplotypes within the alternative H. minckleyi pharyngeal jaw morphotypes that are endemic to the small desert valley of Cuatro Cienegas. We recovered two clusters of mitochondrial haplotypes. The first contained a number of slightly differentiated cytochrome b (cytb) haplotypes that showed some phylogeo-graphic signal and were present in both jaw morphotypes. The other haplotype was monomorphic, highly differentiated from the other cluster, present in equal frequencies in the morphotypes, and identical to H. cyanoguttatus haplotypes found outside Cuatro Cienegas. Then, we investigated whether H. minckleyi individuals with the H. cyanoguttatus cytb were more evolutionarily similar to H. cyanoguttatus or other H. minckleyi using a species tree analysis of 84 nuclear loci. Both H. minckleyi pharyngeal morphotypes, regardless of their cytb haplotype, were quite distinct from H. cyanoguttatus. However, hybridization could be blurring subdivision within H. minckleyi as the alternative jaw mor-photypes were not genetically distinct from one another. Accounting for introgression from H. cyanoguttatus will be essential to understand the evolution of the trophically polymorphic cichlid H. minckleyi."

Editor

John Wiley and Sons Ltd

Fecha de publicación

2013

Tipo de publicación

Artículo

Versión de la publicación

Versión publicada

Recurso de información

http://cibnor.repositorioinstitucional.mx/jspui/handle/1001/2759

Formato

application/pdf

Fuente

Ecology and Evolution

Idioma

Inglés

Repositorio Orígen

Repositorio Institucional CIBNOR

Descargas

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