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Type: Journal article
Title: Evolution of blind beetles in isolated aquifers: a test of alternative modes of speciation
Author: Leijs, R.
van Nes, E.
Watts, C.
Cooper, S.
Humphreys, W.
Hogendoorn, K.
Citation: PLoS One, 2012; 7(3):1-8
Publisher: Public Library of Science
Issue Date: 2012
ISSN: 1932-6203
Statement of
Remko Leijs, Egbert H. van Nes, Chris H. Watts, Steven J.B. Cooper, William F. Humphreys and Katja Hogendoorn
Abstract: Evidence is growing that not only allopatric but also sympatric speciation can be important in the evolution of species. Sympatric speciation has most convincingly been demonstrated in laboratory experiments with bacteria, but field-based evidence is limited to a few cases. The recently discovered plethora of subterranean diving beetle species in isolated aquifers in the arid interior of Australia offers a unique opportunity to evaluate alternative modes of speciation. This naturally replicated evolutionary experiment started 10-5 million years ago, when climate change forced the surface species to occupy geographically isolated subterranean aquifers. Using phylogenetic analysis, we determine the frequency of aquifers containing closely related sister species. By comparing observed frequencies with predictions from different statistical models, we show that it is very unlikely that the high number of sympatrically occurring sister species can be explained by a combination of allopatric evolution and repeated colonisations alone. Thus, diversification has occurred within the aquifers and likely involved sympatric, parapatric and/or microallopatric speciation.
Keywords: Animals
Models, Statistical
Bayes Theorem
Reproducibility of Results
Animal Migration
Species Specificity
Models, Genetic
Genetic Speciation
Biological Evolution
Rights: Copyright: © 2012 Leijs et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
DOI: 10.1371/journal.pone.0034260
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Appears in Collections:Aurora harvest
Earth and Environmental Sciences publications
Environment Institute Leaders publications

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