eCite Digital Repository

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

Citation

Nguyen, TTT and Burridge, CP and Austin, CM, Population genetic studies on the Australian freshwater crayfish, Cherax destructor (Crustacea: Parastacidae) using allozyme and RAPD markers, Aquatic Living Resources: International Journal Devoted to Aquatic Resources, 18 pp. 55-64. ISSN 0990-7440 (2005) [Refereed Article]

Copyright Statement

Copyright 2005 EDP Sciences, IFREMER, IRD

DOI: doi:10.1051/alr:2005005

Abstract

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.

Item Details

Item Type:Refereed Article
Keywords:Freshwater Crayfish
Research Division:Biological Sciences
Research Group:Evolutionary Biology
Research Field:Biogeography and Phylogeography
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Environmental Sciences
Author:Burridge, CP (Dr Christopher Burridge)
ID Code:85340
Year Published:2005
Web of Science® Times Cited:9
Deposited By:Zoology
Deposited On:2013-06-28
Last Modified:2014-02-21
Downloads:0

Repository Staff Only: item control page