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Mitochondrial DNA supports the identification of two endangered river sharks (Glyphis glyphis and Glyphis garricki) across northern Australia

Wynen, Louise, Larson, H., Thorburn, D., Peverell, S., Morgan, D., Field, Iain. and Gibb, Karen (2009). Mitochondrial DNA supports the identification of two endangered river sharks (Glyphis glyphis and Glyphis garricki) across northern Australia. Marine and Freshwater Research,60(6):554-562.

Document type: Journal Article

IRMA ID 78671349xPUB14
Title Mitochondrial DNA supports the identification of two endangered river sharks (Glyphis glyphis and Glyphis garricki) across northern Australia
Author Wynen, Louise
Larson, H.
Thorburn, D.
Peverell, S.
Morgan, D.
Field, Iain.
Gibb, Karen
Journal Name Marine and Freshwater Research
Publication Date 2009
Volume Number 60
Issue Number 6
ISSN 1323-1650   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-67651052759
Start Page 554
End Page 562
Total Pages 9
Place of Publication Australia
Publisher CSIRO Publishing
HERDC Category C1 - Journal Article (DEST)
Abstract The river sharks (genus Glyphis) are a small group of poorly known sharks occurring in tropical rivers and estuarine waters across northern Australia, south-east Asia and the subcontinent. The taxonomy of the genus has long been unclear due to very few individuals having been caught and examined, resulting in a paucity of data regarding their distribution, biology and ecology. Only recently has attention focussed on the two Australian species, G. glyphis and G. garricki. This study is a result of a rare opportunity to collate the few samples that have been collected from these species and the bull shark Carcharhinus leucas, which shares an overlapping range. These samples were analysed using the DNA barcoding approach (cox1 mitochondrial gene), compared with six other species of carcharhinids and evaluated in light of the current taxonomic classification. Nine species-specific nucleotide differences were found between G. glyphis and G. garricki and no intra-specific variation provides strong support for the separation into distinct species. Significant differences were also observed at the inter-generic level, with Glyphis forming a distinct clade from Carcharhinus. This study provides the basis for future molecular studies required to better address conservation issues confronting G. glyphis and G. garricki in Australia.
DOI http://dx.doi.org/10.1071/MF08201   (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: Sun, 21 Mar 2010, 19:12:30 CST by Sarena Wegener