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A genetic investigation on translocation of Australian commercial freshwater crayfish, cherax destructor

journal contribution
posted on 2005-01-01, 00:00 authored by T Nguyen
The Australian freshwater crayfish, Cherax destructor is cultured commercially and has been translocated throughout much of Australia. Previous investigation on C. destructor using 16S rRNA sequences of samples collected from natural environments has revealed a significant phylogeographic structure in this species with three well supported geographically non-overlapping clades, namely ‘northern’ C. d. destructor, ‘southern’ C. d. destructor and C. d. albidus. Movement of individuals beyond their natural range of distribution may have adverse effects on genetic integrity of the species. In the present study, aspects of translocations of the species were genetically investigated. Sequences of the 16S rRNA gene region of themitochondrial DNA (mtDNA) were obtained fromsamples collected in nine quasi-natural waterbodies, supplemented with sequences of samples obtained from 31 natural waterbodies examined in a previous study. Results of phylogeographic analysis provide evidence that certain haplotypes from major clades of C. destructor have been translocated. The findings of this study have important implications for the conservation and management of genetic diversity within C. destructor.

History

Journal

Aquatic living resources

Volume

18

Issue

3

Season

July-September

Pagination

319 - 323

Publisher

E D P Sciences

Location

Paris, France

ISSN

0990-7440

eISSN

1765-2952

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal; C Journal article

Copyright notice

2005, EDP Sciences, IFREMER, IRD

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