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Antarctic Tardigrada: a first step in understanding molecular operational taxonomic units (MOTUs) and biogeography of cryptic meiofauna

Citation

Czechowski, P and Sands, CJ and Adams, BJ and D'Haese, CA and Gibson, JAE and McInnes, SJ and Stevens, MI, Antarctic Tardigrada: a first step in understanding molecular operational taxonomic units (MOTUs) and biogeography of cryptic meiofauna, Invertebrate Systematics, 26, (6) pp. 526-538. ISSN 1445-5226 (2012) [Refereed Article]

Copyright Statement

Copyright 2012 CSIRO

DOI: doi:10.1071/IS12034

Abstract

Recent studies have suggested that some resident Antarctic biota are of ancient origin andmay have been isolated for millions of years. The phylum Tardigrada, which is part of the Antarctic terrestrial meiofauna, is of particular interest due to an impressive array of biochemical abilities to withstand harsh environmental conditions. Tardigrades are one of the few widespread Antarctic terrestrial animals that have the potential to be used as a model for evolution and biogeography on the Antarctic continent. We isolated 126 individual tardigrades from four geographically isolated soil samples from two remote nunataks in the Sør Rondane Mountains, Dronning Maud Land, Antarctica. We examined genetic variation among individuals utilising three gene regions: cytochrome c oxidase subunit I gene (COI), 18S rDNA (18S), and the wingless (Wg) gene. Comparison of sequences from worldwide and Antarctic tardigrades indicated long-term survival and isolation over glacially dominated periods in ice-free habitats in the Sør Rondane Mountains.

Item Details

Item Type:Refereed Article
Keywords:terrestrial meiofauna, Tardugrada, Sor Rondane Mountains
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Terrestrial Ecology
Objective Division:Environment
Objective Group:Flora, Fauna and Biodiversity
Objective Field:Antarctic and Sub-Antarctic Flora, Fauna and Biodiversity
Author:Gibson, JAE (Dr John Gibson)
ID Code:83439
Year Published:2012
Web of Science® Times Cited:12
Deposited By:IMAS Research and Education Centre
Deposited On:2013-03-13
Last Modified:2013-05-07
Downloads:0

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