Continental faunal exchange and the asymmetrical radiation of carnivores.

Details

Serval ID
serval:BIB_70D2C44CD206
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Continental faunal exchange and the asymmetrical radiation of carnivores.
Journal
Proceedings. Biological Sciences / the Royal Society
Author(s)
Pires M.M., Silvestro D., Quental T.B.
ISSN
1471-2954 (Electronic)
ISSN-L
0962-8452
Publication state
Published
Issued date
2015
Volume
282
Number
1817
Pages
20151952
Language
english
Abstract
Lineages arriving on islands may undergo explosive evolutionary radiations owing to the wealth of ecological opportunities. Although studies on insular taxa have improved our understanding of macroevolutionary phenomena, we know little about the macroevolutionary dynamics of continental exchanges. Here we study the evolution of eight Carnivora families that have migrated across the Northern Hemisphere to investigate if continental invasions also result in explosive diversification dynamics. We used a Bayesian approach to estimate speciation and extinction rates from a substantial dataset of fossil occurrences while accounting for the incompleteness of the fossil record. Our analyses revealed a strongly asymmetrical pattern in which North American lineages invading Eurasia underwent explosive radiations, whereas lineages invading North America maintained uniform diversification dynamics. These invasions into Eurasia were characterized by high rates of speciation and extinction. The radiation of the arriving lineages in Eurasia coincide with the decline of established lineages or phases of climate change, suggesting differences in the ecological settings between the continents may be responsible for the disparity in diversification dynamics. These results reveal long-term outcomes of biological invasions and show that the importance of explosive radiations in shaping diversity extends beyond insular systems and have significant impact at continental scales.
Keywords
Animals, Bayes Theorem, Biological Evolution, Carnivora/classification, Climate Change, Ecosystem, Extinction, Biological, Fossils, Genetic Speciation, Introduced Species
Pubmed
Web of science
Open Access
Yes
Create date
13/11/2015 7:58
Last modification date
20/08/2019 14:29
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