Description of Scottnema lindsayae Timm, 1971 (Rhabditida: Cephalobidae) from Taylor Valley, Antarctica and Its Phylogenetic Relationship

Authors

Sven Boström, Swedish Museum of Natural HistoryFollow
Oleksandr Holovachov, University of California - Riverside
Steven A. Nadler, University of California, DavisFollow

Date of this Version

2011

Citation

Polar Biology (2011) 34: 1-12. DOI: 10.1007/s00300-010-0850-8.

Comments

Copyright 2011, the authors. Used by permission. Published by Springer.

Abstract

The endemic Antarctic nematode Scottnema lindsayae is described from specimens collected in Taylor Valley, McMurdo Dry Valleys, Victoria Land. The recently collected material is compared with the original description and other subsequent descriptions of the species. A more complete scanning electron microscopy (SEM) study of the species is presented. The phylogenetic position of S. lindsayae is inferred using a secondary structure-based alignment of a partial sequence of nuclear Large Subunit (LSU) ribosomal DNA. Phylogenetic trees were inferred using base-paired substitution models implemented in PHASE 2 software and Bayesian inference, and show S. lindsayae as the sister group to Stegelletina taxa.