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Population genetic studies on Australian freshwater crayfish, Cherax destructor (Crustacea: Parastacidae) using allozyme and RAPD markers

Nguyen, Thuy T. T., Burridge, Christopher P. and Austin, Chris 2005, Population genetic studies on Australian freshwater crayfish, Cherax destructor (Crustacea: Parastacidae) using allozyme and RAPD markers, Aquatic living resources, vol. 18, no. 1, pp. 55-64, doi: 10.1051/alr:2005005.

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Title Population genetic studies on Australian freshwater crayfish, Cherax destructor (Crustacea: Parastacidae) using allozyme and RAPD markers
Formatted title Population genetic studies on Australian freshwater crayfish, Cherax destructor (Crustacea: Parastacidae) using allozyme and RAPD markers
Author(s) Nguyen, Thuy T. T.
Burridge, Christopher P.
Austin, ChrisORCID iD for Austin, Chris orcid.org/0000-0003-1848-6267
Journal name Aquatic living resources
Volume number 18
Issue number 1
Start page 55
End page 64
Publisher EDP Sciences
Place of publication Les Ulis, France
Publication date 2005
ISSN 0990-7440
1765-2952
Keyword(s) population genetics
Cherax destructor
RAPDs
allozymes
Summary Allozyme and Random Amplified Polymorphic DNA (RAPD) variation was surveyed in the freshwater crayfish Cherax destructor Clark, an ecologically and commercially important species that is widespread throughout the freshwater systems of central Australia. At the intra-population level, allozymes revealed a similar level of variation to that found in other freshwater crayfish; RAPDs showed less diversity than allozymes, which was unexpected. At the inter-population level, both techniques revealed significant population structure, both within and between drainages. RAPD results were consistent with phylogeographic patterns previously identified using mtDNA. Although allozyme data showed little geographic pattern in relation to genetic variation based on multidimensional-scaling (MDS) plots on matrices of genetic distance, results of AMOVA and Mantel tests indicated significant population structuring. Each of the mtDNA lineages proposed in a previous study also showed significant genetic structure at similar levels as revealed by RAPDs but different levels by allozymes. These results reject hypotheses previously put forward on genetic homogenisation within the species due to wide-scale translocation. The implications of the findings for conservation and aquaculture of C. destructor are also discussed.
Language eng
DOI 10.1051/alr:2005005
Field of Research 060411 Population, Ecological and Evolutionary Genetics
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2005, EDP Sciences
Persistent URL http://hdl.handle.net/10536/DRO/DU:30003375

Document type: Journal Article
Collection: School of Ecology and Environment
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