University of Tasmania
Browse

File(s) under permanent embargo

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

journal contribution
posted on 2023-05-17, 18:35 authored by Nguyen, TTT, Christopher BurridgeChristopher Burridge, Austin, CM
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.

History

Publication title

Aquatic Living Resources: International Journal Devoted to Aquatic Resources

Volume

18

Pagination

55-64

ISSN

0990-7440

Department/School

School of Natural Sciences

Publisher

Cambridge University Press

Place of publication

23 Rue Linois, Paris, France, 75015

Rights statement

Copyright 2005 EDP Sciences, IFREMER, IRD

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the environmental sciences

Usage metrics

    University Of Tasmania

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC