Quaternary refugia and secondary contact in the southern boundary of the Brazilian subregion: comparative phylogeography of freshwater fish

Freshwater fish are an ideal model to illustrate how climate-tectonic changes affect the distribution of genetic variation. Freshwater bodies are extensively affected by environmental changes, with streams even changing their courses in the most extreme cases. Fortunately, this situation is reflecte...

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Detalles Bibliográficos
Autores principales:	Bruno, María Cecilia, Casciotta, Jorge Rafael, Almirón, Adriana Edith, Riccillo, Fernando Luis, Lizarralde, Marta Susana
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2015
Materias:	Ciencias Naturales Corydoras Paleatus Jenynsia Multidentata Control Region Southern Pampean Area
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/97877 https://ri.conicet.gov.ar/11336/5578
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-97877
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 Corydoras Paleatus Jenynsia Multidentata Control Region Southern Pampean Area
spellingShingle	Ciencias Naturales Corydoras Paleatus Jenynsia Multidentata Control Region Southern Pampean Area Bruno, María Cecilia Casciotta, Jorge Rafael Almirón, Adriana Edith Riccillo, Fernando Luis Lizarralde, Marta Susana Quaternary refugia and secondary contact in the southern boundary of the Brazilian subregion: comparative phylogeography of freshwater fish
topic_facet	Ciencias Naturales Corydoras Paleatus Jenynsia Multidentata Control Region Southern Pampean Area
description	Freshwater fish are an ideal model to illustrate how climate-tectonic changes affect the distribution of genetic variation. Freshwater bodies are extensively affected by environmental changes, with streams even changing their courses in the most extreme cases. Fortunately, this situation is reflected in the genetic composition of populations and may currently be inferred from the study of mitochondrial DNA molecular markers. Here we analyze and compare the phylogeographic patterns of the species Corydoras paleatus and Jenynsia multidentata at the southern limit of the Brazilian subregion. These basins are isolated in the current hydrogeographic pattern due to geologic and paleoclimatic changes. Our results support a concurrent pattern for both species. Some lineages have persisted in the area under adverse climate conditions, possibly in environmental refuges, while other lineages may have colonized the area later by means of paleodrainage connections. In addition, the presence of independent, greatly diverging lineages, even within the same watercourses, suggests secondary contact between these lineages. This work represents a first approach to understand how geologic and paleoclimatic changes have affected the distribution of genetic variation in the Southern Pampean Area
format	Articulo Articulo
author	Bruno, María Cecilia Casciotta, Jorge Rafael Almirón, Adriana Edith Riccillo, Fernando Luis Lizarralde, Marta Susana
author_facet	Bruno, María Cecilia Casciotta, Jorge Rafael Almirón, Adriana Edith Riccillo, Fernando Luis Lizarralde, Marta Susana
author_sort	Bruno, María Cecilia
title	Quaternary refugia and secondary contact in the southern boundary of the Brazilian subregion: comparative phylogeography of freshwater fish
title_short	Quaternary refugia and secondary contact in the southern boundary of the Brazilian subregion: comparative phylogeography of freshwater fish
title_full	Quaternary refugia and secondary contact in the southern boundary of the Brazilian subregion: comparative phylogeography of freshwater fish
title_fullStr	Quaternary refugia and secondary contact in the southern boundary of the Brazilian subregion: comparative phylogeography of freshwater fish
title_full_unstemmed	Quaternary refugia and secondary contact in the southern boundary of the Brazilian subregion: comparative phylogeography of freshwater fish
title_sort	quaternary refugia and secondary contact in the southern boundary of the brazilian subregion: comparative phylogeography of freshwater fish
publishDate	2015
url	http://sedici.unlp.edu.ar/handle/10915/97877 https://ri.conicet.gov.ar/11336/5578
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bdutipo_str	Repositorios
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Quaternary refugia and secondary contact in the southern boundary of the Brazilian subregion: comparative phylogeography of freshwater fish

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