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The molecular systematics of Leiopotherapon unicolor (Gunther, 1859): Testing for cryptic speciation in Australia's most widespread freshwater fish

Bostock, B., Adams, M., Laurenson, L. and Austin, Christopher M. (2006). The molecular systematics of Leiopotherapon unicolor (Gunther, 1859): Testing for cryptic speciation in Australia's most widespread freshwater fish. Biological Journal of the Linnean Society,87(4):537-552.

Document type: Journal Article
Citation counts: Scopus Citation Count Cited 10 times in Scopus Article | Citations

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IRMA ID 78674128xPUB19
Title The molecular systematics of Leiopotherapon unicolor (Gunther, 1859): Testing for cryptic speciation in Australia's most widespread freshwater fish
Author Bostock, B.
Adams, M.
Laurenson, L.
Austin, Christopher M.
Journal Name Biological Journal of the Linnean Society
Publication Date 2006
Volume Number 87
Issue Number 4
ISSN 1095-8312   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-33646867497
Start Page 537
End Page 552
Total Pages 16
Place of Publication United Kingdom
Publisher Linnean Society of London
Field of Research BIOLOGICAL SCIENCES
0603 - Evolutionary Biology
HERDC Category C1 - Journal Article (DEST)
Abstract Leiopotherapon unicolor is the most widespread freshwater fish species in Australia. A comprehensive allozyme and mitochondrial DNA 16S rRNA data set was assembled from 141 specimens of L. unicolor collected Australia-wide in order to test for cryptic speciation in this far-ranging species. Surprisingly, little genetic diversity was observed within L. unicolor and provided no evidence for the existence of cryptic species within this lineage. In contrast, a small sample set of L. aheneus used as the outgroup showed two highly divergent haplotypes strongly suggestive of cryptic speciation. L. unicolor has a number of ecological and life history attributes that may explain the lack of significant genetic divergence over substantial geographical distances. The occurrence of other widespread fish and crustacean species that also display only limited genetic diversity indicate that climate conditions more favourable to dispersal across central and northern Australia than is suggested by the extent of present-day aridity have occurred in the relatively recent geological past.
Keywords allozyme electrophoresis
australia
biogeography
cryptic speciation
lack of divergence
mtdna
phylogeny
mitochondrial
genetics
decapoda
phylogeography
biogeography
zoogeography
parastacidae
teleostei
pisces
DOI http://dx.doi.org/10.1111/j.1095-8312.2006.00587.x   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
 
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Created: Wed, 28 Nov 2007, 14:16:08 CST