Diversification patterns and size evolution in caviomorph rodents

Caviomorph rodents are one of the most diverse mammalian groups in the Neotropics; they display astonishing eco-morphological variation, including unparalleled size range. Here we analyse evolutionary patterns among extant caviomorphs, particularly their rates of diversification and size evolution....

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Autores principales:	Alvarez, Alicia, Moyers Arévalo, Reyna Leticia, Verzi, Diego Héctor
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2017
Materias:	Otras ciencias biológicas Ciencias biológicas Ciencias naturales y exactas Caviomorph rodents Divergence times Evolutionary diversification Molecular phylogeny Size evolution
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/96104 https://ri.conicet.gov.ar/11336/64581 https://academic.oup.com/biolinnean/article/121/4/907/3095993
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-96104
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Otras ciencias biológicas Ciencias biológicas Ciencias naturales y exactas Caviomorph rodents Divergence times Evolutionary diversification Molecular phylogeny Size evolution
spellingShingle	Otras ciencias biológicas Ciencias biológicas Ciencias naturales y exactas Caviomorph rodents Divergence times Evolutionary diversification Molecular phylogeny Size evolution Alvarez, Alicia Moyers Arévalo, Reyna Leticia Verzi, Diego Héctor Diversification patterns and size evolution in caviomorph rodents
topic_facet	Otras ciencias biológicas Ciencias biológicas Ciencias naturales y exactas Caviomorph rodents Divergence times Evolutionary diversification Molecular phylogeny Size evolution
description	Caviomorph rodents are one of the most diverse mammalian groups in the Neotropics; they display astonishing eco-morphological variation, including unparalleled size range. Here we analyse evolutionary patterns among extant caviomorphs, particularly their rates of diversification and size evolution. The results show large heterogeneity in the evolutionary dynamics of caviomorphs. Three clear episodes of rapid increase of the diversification rate were detected; two of them during the Oligocene were related to the diversification of major clades; a third one, in the late Miocene, was related to the diversification of the genus Ctenomys. Regarding size, relatively low rates characterized much of Octodontoidea, the most speciose among the main caviomorph clades. Other clades, especially Cavioidea and Chinchilloidea, showed much accelerated evolutionary rates and the highest number of size changes, particularly increases; furthermore, they include extinct representatives that reached very large to gigantic size. Thus, although the macroevolutionary dynamics of caviomorphs were complex and heterogeneous in our study, the pathways followed by different clades seem to display their own particular characteristics. This should be analysed in greater depth through new, greater scale analyses incorporating the rich fossil record of caviomorphs, which contributes essential information to understand the evolution of these peculiar rodents.
format	Articulo Articulo
author	Alvarez, Alicia Moyers Arévalo, Reyna Leticia Verzi, Diego Héctor
author_facet	Alvarez, Alicia Moyers Arévalo, Reyna Leticia Verzi, Diego Héctor
author_sort	Alvarez, Alicia
title	Diversification patterns and size evolution in caviomorph rodents
title_short	Diversification patterns and size evolution in caviomorph rodents
title_full	Diversification patterns and size evolution in caviomorph rodents
title_fullStr	Diversification patterns and size evolution in caviomorph rodents
title_full_unstemmed	Diversification patterns and size evolution in caviomorph rodents
title_sort	diversification patterns and size evolution in caviomorph rodents
publishDate	2017
url	http://sedici.unlp.edu.ar/handle/10915/96104 https://ri.conicet.gov.ar/11336/64581 https://academic.oup.com/biolinnean/article/121/4/907/3095993
work_keys_str_mv	AT alvarezalicia diversificationpatternsandsizeevolutionincaviomorphrodents AT moyersarevaloreynaleticia diversificationpatternsandsizeevolutionincaviomorphrodents AT verzidiegohector diversificationpatternsandsizeevolutionincaviomorphrodents
bdutipo_str	Repositorios
_version_	1764820491770527745

Diversification patterns and size evolution in caviomorph rodents

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