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Type: Journal article
Title: The evolution of epigean and stygobitic species of Koonunga Sayce, 1907 (Syncarida: Anaspidacea) in Southern Australia, with the description of three new species
Author: Leijs, R.
Bradford, T.
Mitchell, J.
Humphreys, W.
Cooper, S.
Goonan, P.
King, R.
Citation: PLoS One, 2015; 10(8):e0134673-1-e0134673-35
Publisher: Public Library of Science
Issue Date: 2015
ISSN: 1932-6203
Editor: Bruce, N.
Statement of
Remko Leijs, Tessa Bradford, James G. Mitchell, William F. Humphreys, Steven J. B. Cooper, Peter Goonan, Rachael A. King
Abstract: Three new species of Koonunga were discovered in surface and subterranean waters in southern Australia, and were defined using mtDNA analyses and morphology. The new species are: Koonunga hornei Leijs & King; K. tatiaraensis Leijs & King and K. allambiensis Leijs & King. Molecular clock analyses indicate that the divergence times of the species are older than the landscape that they currently inhabit. Different scenarios explaining this apparent discrepancy are discussed in the context of the palaeography of the area. A freshwater epigean origin for Koonunga is considered the most likely hypothesis, whereby some lineages made the transition to the subterranean environment within the last few million years influenced by significant climatic cooling/drying. We discuss the possibility that one stygobitic lineage secondarily regained some of its body pigmentation as adaptation to increased photic conditions after cave collapse and forming of cenotes during the last glacial maximum.
Keywords: Animals
Evolution, Molecular
Rights: © 2015 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.0134673
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Appears in Collections:Aurora harvest 3
Ecology, Evolution and Landscape Science publications

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