CSIRO Publishing blank image blank image blank image blank imageBooksblank image blank image blank image blank imageJournalsblank image blank image blank image blank imageAbout Usblank image blank image blank image blank imageShopping Cartblank image blank image blank image You are here: Journals > Invertebrate Systematics   
Invertebrate Systematics
Journal Banner
  Systematics, Phylogeny and Biogeography
blank image Search
blank image blank image
blank image
  Advanced Search

Journal Home
About the Journal
Editorial Board
Current Issue
Just Accepted
All Issues
Special Issues
Virtual Issues
Sample Issue
For Authors
General Information
Notice to Authors
Submit Article
Open Access
For Referees
Referee Guidelines
Review an Article
Annual Referee Index
For Subscribers
Subscription Prices
Customer Service
Print Publication Dates

blue arrow e-Alerts
blank image
Subscribe to our Email Alert or RSS feeds for the latest journal papers.

red arrow Connect with us
blank image
facebook twitter youtube

red arrow Supplementary Series
blank image
All volumes of the Australian Journal of Zoology Supplementary Series are online.


 Just Accepted

This article has been peer reviewed and accepted for publication. It is in production and has not been edited, so may differ from the final published form.

Molecular phylogenetic analysis of Western Australian troglobitic chthoniid pseudoscorpions (Pseudoscorpiones, Chthoniidae) points to multiple independent subterranean clades

Sophie Harrison, Michelle Guzik, Mark Harvey, Andy Austin


The Yilgarn and Pilbara regions of Western Australia are considered biodiversity hotspots for subterranean invertebrates. While the relatively well-studied (aquatic) stygofauna are typically constrained to geographically isolated habitats (‘subterranean islands’) and have likely originated from multiple independent epigean ancestors, the troglofauna found in cavernicolous calcretes and fractured rock remains largely unstudied. Here we focus on the pseudoscorpion genera Tyrannochthonius Chamberlin, 1929 and Lagynochthonius Beier, 1951, as common components of the troglofauna, to determine whether they also display highly restricted distributional patterns, and have independent origins. Bayesian and Maximum Likelihood analyses of sequence data from the mtDNA CO1 and the small subunit 18S nuclear genes for subterranean and epigean species from both genera reveal divergent mtDNA lineages that are restricted to single aquifers and/or geographic locations. This strong geographic structuring of troglobitic pseudoscorpions is indicative of both short-range endemism and supports the ‘subterranean island’ hypothesis. Further, independent sister relationships between subterranean and epigean taxa indicate multiple invasions into subterranean habitats, likely driven by post-Miocene aridification, consistent with that predicted for the stygofauna. The phylogeny also reveals that Tyrannochthonius + Lagynochthonius is monophyletic but that Lagynochthonius is polyphyletic and nested inside Tyrannochthonius. The results of this study point to common processes that have shaped the diversity and uniqueness of both stygofaunal and troglofaunal communities in Western Australia.

IS14005  Accepted 16 May 2014
© CSIRO 2014

Legal & Privacy | Contact Us | Help


© CSIRO 1996-2014