The role of vicariance and dispersal on the temporal range dynamics of forest vipers in the Neotropical region.

The emergence of the diagonal of open/dry vegetations, including Chaco, Cerrado and Caatinga, is suggested to have acted as a dispersal barrier for terrestrial organisms by fragmenting a single large forest that existed in South America into the present Atlantic and Amazon forests. Here we tested th...

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Autores principales:	Matheus Pontes-Nogueira, Marcio Martins, Laura R V Alencar, Ricardo J Sawaya
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/48b80e491c444aa7a15b804cac30990d
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spelling	oai:doaj.org-article:48b80e491c444aa7a15b804cac30990d2021-12-02T20:14:32ZThe role of vicariance and dispersal on the temporal range dynamics of forest vipers in the Neotropical region.1932-620310.1371/journal.pone.0257519https://doaj.org/article/48b80e491c444aa7a15b804cac30990d2021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0257519https://doaj.org/toc/1932-6203The emergence of the diagonal of open/dry vegetations, including Chaco, Cerrado and Caatinga, is suggested to have acted as a dispersal barrier for terrestrial organisms by fragmenting a single large forest that existed in South America into the present Atlantic and Amazon forests. Here we tested the hypothesis that the expansion of the South American diagonal of open/dry landscapes acted as a vicariant process for forest lanceheads of the genus Bothrops, by analyzing the temporal range dynamics of those snakes. We estimated ancestral geographic ranges of the focal lancehead clade and its sister clade using a Bayesian dated phylogeny and the BioGeoBEARS package. We compared nine Maximum Likelihood models to infer ancestral range probabilities and their related biogeographic processes. The best fitting models (DECTS and DIVALIKETS) recovered the ancestor of our focal clade in the Amazon biogeographic region of northwestern South America. Vicariant processes in two different subclades resulted in disjunct geographic distributions in the Amazon and the Atlantic Forest. Dispersal processes must have occurred mostly within the Amazon and the Atlantic Forest and not between them. Our results suggest the fragmentation of a single ancient large forest into the Atlantic and Amazon forests acting as a driver of vicariant processes for the snake lineage studied, highlighting the importance of the diagonal of open/dry landscapes in shaping distribution patterns of terrestrial biota in South America.Matheus Pontes-NogueiraMarcio MartinsLaura R V AlencarRicardo J SawayaPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 9, p e0257519 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Matheus Pontes-Nogueira Marcio Martins Laura R V Alencar Ricardo J Sawaya The role of vicariance and dispersal on the temporal range dynamics of forest vipers in the Neotropical region.
description	The emergence of the diagonal of open/dry vegetations, including Chaco, Cerrado and Caatinga, is suggested to have acted as a dispersal barrier for terrestrial organisms by fragmenting a single large forest that existed in South America into the present Atlantic and Amazon forests. Here we tested the hypothesis that the expansion of the South American diagonal of open/dry landscapes acted as a vicariant process for forest lanceheads of the genus Bothrops, by analyzing the temporal range dynamics of those snakes. We estimated ancestral geographic ranges of the focal lancehead clade and its sister clade using a Bayesian dated phylogeny and the BioGeoBEARS package. We compared nine Maximum Likelihood models to infer ancestral range probabilities and their related biogeographic processes. The best fitting models (DECTS and DIVALIKETS) recovered the ancestor of our focal clade in the Amazon biogeographic region of northwestern South America. Vicariant processes in two different subclades resulted in disjunct geographic distributions in the Amazon and the Atlantic Forest. Dispersal processes must have occurred mostly within the Amazon and the Atlantic Forest and not between them. Our results suggest the fragmentation of a single ancient large forest into the Atlantic and Amazon forests acting as a driver of vicariant processes for the snake lineage studied, highlighting the importance of the diagonal of open/dry landscapes in shaping distribution patterns of terrestrial biota in South America.
format	article
author	Matheus Pontes-Nogueira Marcio Martins Laura R V Alencar Ricardo J Sawaya
author_facet	Matheus Pontes-Nogueira Marcio Martins Laura R V Alencar Ricardo J Sawaya
author_sort	Matheus Pontes-Nogueira
title	The role of vicariance and dispersal on the temporal range dynamics of forest vipers in the Neotropical region.
title_short	The role of vicariance and dispersal on the temporal range dynamics of forest vipers in the Neotropical region.
title_full	The role of vicariance and dispersal on the temporal range dynamics of forest vipers in the Neotropical region.
title_fullStr	The role of vicariance and dispersal on the temporal range dynamics of forest vipers in the Neotropical region.
title_full_unstemmed	The role of vicariance and dispersal on the temporal range dynamics of forest vipers in the Neotropical region.
title_sort	role of vicariance and dispersal on the temporal range dynamics of forest vipers in the neotropical region.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/48b80e491c444aa7a15b804cac30990d
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The role of vicariance and dispersal on the temporal range dynamics of forest vipers in the Neotropical region.

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