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Phylogeny of the Australian freshwater crayfish Cherax destructor-complex (Decapoda:Parastacidae) inferred from four mitochondrial gene regions

journal contribution
posted on 2005-01-01, 00:00 authored by T Nguyen, Chris AustinChris Austin
The phylogenetic relationships among 32 individuals of Australian freshwater crayfish belonging to the Cherax destructor-complex were investigated using a dataset comprising sequences from four mitochondrial gene regions: the large subunit rRNA (16S rRNA), cytochrome oxidase I (COI), adenosine triphosphatase 6 (ATPase 6), and cytochrome oxidase III (COIII). A total of 1602 bp was obtained, and a combined analysis of the data produced a tree with strong support (bootstrap values 94–100%) for three divergent lineages, verifying the phylogenetic hypotheses of relationships within the C. destructor species-complex suggested in previous studies. Overall, sequences from the 16S rRNA gene showed the least variation compared to those generated from protein coding genes, which presented considerably greater levels of divergence. The level of divergence within C. destructor was found to be greater than that observed in other species of freshwater crayfish, but interspecific variation among species examined in the present study was similar to that reported previously.

History

Journal

Invertebrate systematics

Volume

19

Issue

3

Pagination

209 - 216

Publisher

CSIRO Publishing

Location

Collingwood, Vic.

ISSN

1445-5226

eISSN

1447-2600

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2005, CSIRO