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Molecular phylogeny and zoogeography of the freshwater crayfish genus Cherax Erichson (Decapoda: Parastacidae) in Australia


Munasinghe, DHN and Burridge, CP and Austin, CM, Molecular phylogeny and zoogeography of the freshwater crayfish genus Cherax Erichson (Decapoda: Parastacidae) in Australia, Biological Journal of the Linnean Society, 81, (4) pp. 553-563. ISSN 0024-4066 (2004) [Refereed Article]

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DOI: doi:10.1111/j.1095-8312.2003.00299.x


The evolutionary history and biogeography of freshwater-dependent taxa in Australia is of intrinsic interest given the present-day aridity of this continent. Cherax is the most widespread and one of the most species-rich of Australia's nine freshwater crayfish genera. The phylogenetic relationships amongst 19 of the 23 Australian Cherax were established from mitochondrial DNA sequences representing the 12S rRNA and 16S rRNA gene regions. The relationships among species support an initial east–west separation, followed by a north–south divergence in eastern Australia. Molecular clock estimations suggest that these divergences date back to the Miocene. The phylogenetic relationships support endemic speciation within geographical regions and indicate that long-distance dispersal has not led to recent speciation as previously hypothesized. This new evolutionary scenario is consistent with the climatic history of Australia and the evolutionary history of other similarly distributed freshwater-dependent organisms in Australia

Item Details

Item Type:Refereed Article
Keywords:12S rRNA, 16S rRNA, biogeography, endemism, Miocene, molecular clock, mtDNA
Research Division:Biological Sciences
Research Group:Evolutionary biology
Research Field:Biogeography and phylogeography
Objective Division:Environmental Management
Objective Group:Fresh, ground and surface water systems and management
Objective Field:Fresh, ground and surface water biodiversity
UTAS Author:Burridge, CP (Associate Professor Christopher Burridge)
ID Code:59370
Year Published:2004
Web of Science® Times Cited:55
Deposited By:Zoology
Deposited On:2009-11-30
Last Modified:2013-01-14
Downloads:12 View Download Statistics

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