File(s) under permanent embargo
Population genetic studies on Australian freshwater crayfish, Cherax destructor (Crustacea: Parastacidae) using allozyme and RAPD markers
journal contribution
posted on 2005-01-01, 00:00 authored by T Nguyen, C Burridge, Chris AustinChris AustinAllozyme 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
Journal
Aquatic living resourcesVolume
18Issue
1Pagination
55 - 64Publisher
EDP SciencesLocation
Les Ulis, FrancePublisher DOI
ISSN
0990-7440eISSN
1765-2952Language
engPublication classification
C1 Refereed article in a scholarly journalCopyright notice
2005, EDP SciencesUsage metrics
Categories
No categories selectedKeywords
population geneticsCherax destructorRAPDsallozymesScience & TechnologyLife Sciences & BiomedicineFisheriesMarine & Freshwater BiologyASTACUS-ASTACUS L.AUSTROPOTAMOBIUS-PALLIPESMITOCHONDRIAL-DNANOBLE CRAYFISHGENUS AUSTROPOTAMOBIUSCOLONIZATION HISTORYERICHSON DECAPODAWESTERN-AUSTRALIAWILD POPULATIONSDIVERSITY
Licence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC