Description of Scottnema lindsayae Timm, 1971 (Rhabditida: Cephalobidae) from Taylor Valley, Antarctica and its phylogenetic relationship

• Published in: Polar Biology
• Main Authors: Boström, Sven, Holovachov, Oleksandr, Nadler, Steven A.
• Format: Article in Journal/Newspaper
• Language: English
• Published: eScholarship, University of California 2011
• Subjects: Life Sciences; Zoology; Ecology; Plant Sciences; Microbiology; Oceanography; Antarctica; Cephalobidae; Description; Morphology; Nematoda; Phylogeny; Scottnema; SEM; Taxonomy; Taylor Valley; Antarctic; McMurdo Dry Valleys; Victoria Land; Antarc*; Polar Biology
• Online Access: http://www.escholarship.org/uc/item/92d903tj

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.