Phylogenomics of pike cichlids (Cichlidae: Crenicichla ) of the C. mandelburgeri species complex: rapid ecological speciation in the Iguazú River and high endemism in the Middle Paraná basin

The Crenicichla mandelburgeri species complex from the Middle Parana basin is a diverse group of cichlid species and contains all known ecomorphs found within the entire genus Crenicichla. Here, we study the phylogenetic relationships within the C. mandelburgeri species complex using ddRAD sequencin...

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Detalles Bibliográficos
Autores principales: Piálek, Lubomír, Burress, Edward D., Dragová, Klára, Almirón, Adriana Edith, Casciotta, Jorge Rafael, Říčan, Oldřich
Formato: Articulo
Lenguaje:Inglés
Publicado: 2018
Materias:
Ciencias Naturales
Convergence
Diversification
Parallel evolution
Species flock
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/131990
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-131990
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Convergence
Diversification
Parallel evolution
Species flock
spellingShingle Ciencias Naturales
Convergence
Diversification
Parallel evolution
Species flock
Piálek, Lubomír
Burress, Edward D.
Dragová, Klára
Almirón, Adriana Edith
Casciotta, Jorge Rafael
Říčan, Oldřich
Phylogenomics of pike cichlids (Cichlidae: Crenicichla ) of the C. mandelburgeri species complex: rapid ecological speciation in the Iguazú River and high endemism in the Middle Paraná basin
topic_facet Ciencias Naturales
Convergence
Diversification
Parallel evolution
Species flock
description The Crenicichla mandelburgeri species complex from the Middle Parana basin is a diverse group of cichlid species and contains all known ecomorphs found within the entire genus Crenicichla. Here, we study the phylogenetic relationships within the C. mandelburgeri species complex using ddRAD sequencing with focus on its two candidate species flocks endemic to the Iguazu and Urugua-i Rivers, and on two putative sympatric species in the Piray Guazu River. These species flocks include four and three syntopic species, respectively, which are strongly adapted to different trophic niches and include derived ecomorphs of Crenicichla (molluscivores, a periphyton grazer, and a crevice-feeding thick-lipped invertivore). Our phylogenomic analyses strongly support monophyly and rapid diversification of the Iguazu species flock, but reveal more complex evolutionary histories in the Urugua-i and Piray Guazu tributaries. Most species in the Middle Parana, including one species in the Urugua-i and both species in the Piray Guazu show cytonuclear discordance, and in both of these tributaries, we also found hybridization in one of the resident species. Population-level analyses reveal complete isolation of the Iguazu species and coupled with their dramatic ecological diversity, this radiation exemplifies characteristics of a species flock that arose via ecological speciation.
format Articulo
Articulo
author Piálek, Lubomír
Burress, Edward D.
Dragová, Klára
Almirón, Adriana Edith
Casciotta, Jorge Rafael
Říčan, Oldřich
author_facet Piálek, Lubomír
Burress, Edward D.
Dragová, Klára
Almirón, Adriana Edith
Casciotta, Jorge Rafael
Říčan, Oldřich
author_sort Piálek, Lubomír
title Phylogenomics of pike cichlids (Cichlidae: Crenicichla ) of the C. mandelburgeri species complex: rapid ecological speciation in the Iguazú River and high endemism in the Middle Paraná basin
title_short Phylogenomics of pike cichlids (Cichlidae: Crenicichla ) of the C. mandelburgeri species complex: rapid ecological speciation in the Iguazú River and high endemism in the Middle Paraná basin
title_full Phylogenomics of pike cichlids (Cichlidae: Crenicichla ) of the C. mandelburgeri species complex: rapid ecological speciation in the Iguazú River and high endemism in the Middle Paraná basin
title_fullStr Phylogenomics of pike cichlids (Cichlidae: Crenicichla ) of the C. mandelburgeri species complex: rapid ecological speciation in the Iguazú River and high endemism in the Middle Paraná basin
title_full_unstemmed Phylogenomics of pike cichlids (Cichlidae: Crenicichla ) of the C. mandelburgeri species complex: rapid ecological speciation in the Iguazú River and high endemism in the Middle Paraná basin
title_sort phylogenomics of pike cichlids (cichlidae: crenicichla ) of the c. mandelburgeri species complex: rapid ecological speciation in the iguazú river and high endemism in the middle paraná basin
publishDate 2018
url http://sedici.unlp.edu.ar/handle/10915/131990
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