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https://hdl.handle.net/2440/81485
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Type: | Journal article |
Title: | A molecular assessment of species boundaries and phylogenetic affinities in Mogurnda (Eleotridae): a case study of cryptic biodiversity in the Australian freshwater fishes |
Author: | Adams, M. Page, T. Hurwood, D. Hughes, J. |
Citation: | Marine and Freshwater Research, 2013; 64(10):920-931 |
Publisher: | C S I R O Publishing |
Issue Date: | 2013 |
ISSN: | 1323-1650 1448-6059 |
Statement of Responsibility: | Mark Adams, Timothy J. Page, David A. Hurwood, and Jane M. Hughes |
Abstract: | As the driest inhabitable continent, it comes as no surprise that Australia has comparatively few species of freshwater-dependent fishes compared with land masses of similar size and latitudinal coverage. In addition to relatively low rainfall and few permanent waterbodies, a range of other climatic, geological, physical, and biogeographical factors are generally offered up, to account for the low species count in a country otherwise regarded as mega-biodiverse. Here, we challenge this traditional view by hypothesising that Australia’s lack of freshwater fishes largely reflects a dearth of detailed taxonomic activity. Using both allozyme and mtDNA markers, we undertook a molecular assessment on the Australian purple-spotted gudgeons (Mogurnda), recently subjected to a taxonomic revision that saw a three-fold increase in the number of described species. In addition to demonstrating additional, species-level biodiversity within M. adspersa, our genetic data revealed discordant patterns of mitochondrial and nuclear genetic affinities among populations in several species, plus a sister relationship between the two central Australian species. We discuss the broader implications of such cryptic biodiversity for the Australian freshwater fish fauna; most notable among these is our prediction that only 50% of species have been described. |
Keywords: | cryptic species M. mogurnda molecular systematics phylogeography taxonomic impediment US fishes |
Rights: | Copyright status unknown |
DOI: | 10.1071/MF12237 |
Published version: | http://dx.doi.org/10.1071/mf12237 |
Appears in Collections: | Aurora harvest 4 Earth and Environmental Sciences publications |
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