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Evolution underground: A molecular phylogenetic investigation of Australian burrowing freshwater crayfish (Decapoda: Parastacidae) with particular focus on Engaeus Erichson

Citation

Schultz, MB and Smith, SA and Horwitz, P and Richardson, AMM and Crandall, KA and Austin, CM, Evolution underground: A molecular phylogenetic investigation of Australian burrowing freshwater crayfish (Decapoda: Parastacidae) with particular focus on Engaeus Erichson, Molecular Phylogenetics and Evolution, 50, (3) pp. 580-598. ISSN 1055-7903 (2009) [Refereed Article]


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DOI: doi:10.1016/j.ympev.2008.11.025

Abstract

Phylogenetic relationships and species boundaries of Australian burrowing freshwater crayfish belonging to the genera Engaeus, Engaewa, Geocharax, Gramastacus and Tenuibranchiurus are investigated using combined mitochondrial and nuclear DNA sequence data and Bayesian and Maximum Parsimony methods. Phylogenies are statistically compared to previously published hypotheses. Engaeus, Engaewa, Geocharax, Gramastacus and Tenuibranchiurus form a strongly supported monophyletic clade. This grouping is independently supported by morphology but unites geographically highly disjunct lineages. Our data show two cryptic species in Geocharax, one cryptic species in Gramastacus and two cryptic species within the highly divergent Engaeus lyelli lineage. Using a Bayesian relaxed molecular clock method, the 16S rDNA data show generic-level diversification coinciding with the transition from a wet to arid palaeoclimate near the mid Miocene.

Item Details

Item Type:Refereed Article
Keywords: Phylogenetics; Biogeography; Evolution; Relaxed molecular clock; Burrowing freshwater crayfish; Mitochondrial ribosomal; Nuclear protein-coding DNA; 16S; GAPDH; Systematics; Australia
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Freshwater Ecology
Objective Division:Environment
Objective Group:Flora, Fauna and Biodiversity
Objective Field:Fresh, Ground and Surface Water Flora, Fauna and Biodiversity
Author:Richardson, AMM (Associate Professor Alastair Richardson)
ID Code:59776
Year Published:2009
Web of Science® Times Cited:21
Deposited By:Zoology
Deposited On:2009-12-17
Last Modified:2010-04-27
Downloads:3 View Download Statistics

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