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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
Statement of
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
taxonomic impediment
US fishes
Rights: Copyright status unknown
DOI: 10.1071/MF12237
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Appears in Collections:Aurora harvest 4
Earth and Environmental Sciences publications

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