To the top

Page Manager: Webmaster
Last update: 9/11/2012 3:13 PM

Tell a friend about this page
Print version

A complex biogeographic h… - University of Gothenburg, Sweden Till startsida
To content Read more about how we use cookies on

A complex biogeographic history of diversification in Neotropical lancehead pitvipers (Serpentes, Viperidae)

Journal article
Authors B. Hamdan
Thaís Guedes
P. A. Carrasco
J. Melville
Published in Zoologica Scripta
Volume 49
Issue 2
Pages 145-158
ISSN 0300-3256
Publication year 2020
Published at Department of Biological and Environmental Sciences
Pages 145-158
Language en
Keywords distribution, diversification, ecological opportunities, molecular, phylogeny, Neotropical region, patterns of speciation, genus bothrops serpentes, south-american pitvipers, phylogenetic-relationships, molecular systematics, divergence times, andean uplift, evolution, diversity, snakes, crotalinae, Evolutionary Biology, Zoology
Subject categories Evolutionary Biology, Zoology


Based on the literature, we had predicted that the diversification within the Neotropical snake genus Bothrops occurred along a latitudinal gradient from north to south, with diversification into unoccupied niches through ecological opportunity, not correlated with geoclimatic events. Using a dated phylogeny and estimating likelihoods of ancestral states at cladogenesis events, we reconstructed ancestral areas and assessed major events of the diversification of Bothrops clades, and we also discuss systematic implications for this group. Based on the phylogeny we produced, B. lojanus was not considered as part of the genus Bothrops since the results recovered this species nested within the Bothrocophias clade. We infer that the diversification of the Miocene Bothrops pictus and Bothrops alternatus clades may be related to the uplift of the western slopes of the Andes and the Argentinian Patagonian Andes, respectively. The Pliocene Bothrops taeniatus and Bothrops osbornei clades may be related to the uplift of the eastern and northern Andes, respectively. The Plio-Pleistocene Bothrops neuwiedi clade may be related to the habitat transitions from a warmer and forested environment to a cooler and open landscape; the Bothrops jararaca (i.e. island endemic species) and Bothrops lanceolatus clades to over-water dispersal with island speciation; and Bothrops atrox clade to the appearance of the Panamanian land bridge. We found that a multitemporal and multidirectional history of diversification may be correlated with geoclimatic and dispersalist events. We argue that the vacant niche hypothesis by itself does not explain Bothrops diversification.

Page Manager: Webmaster|Last update: 9/11/2012

The University of Gothenburg uses cookies to provide you with the best possible user experience. By continuing on this website, you approve of our use of cookies.  What are cookies?

Denna text är utskriven från följande webbsida:
Utskriftsdatum: 2020-08-10