Paul De Ley

TL;DR: It is suggested that animal parasitism arose independently at least four times, and plant parasitism three times, which indicates that convergent morphological evolution may be extensive and that present higher-level classification of the Nematoda will need revision.

TL;DR: It is shown that D2/D3 sequence data provide an important new diagnostic tool for addressing various types of diagnostic and taxonomic problems at species level, and it is shown the left-handed strains PS1158 and PS2160 are identified as Acrobeloides bodenheimeri and the right-handed strain PS2052 is identified as A. camberenensis, which is re-instated as a valid species.

TL;DR: Small subunit ribosomal DNA (SSU rDNA) sequences for 100 previously un-sequenced species of nematodes, including 46 marine taxa are added and phylogenies provide support for the re-classification of the Secernentea as the order Rhabditida that derived from a common ancestor of chromadorean orders Araeolaimida, Chromadoria, Desmodorida, Desmoscolecida, and Monhysterida.

TL;DR: A solution containing dimethyl sulphoxide, disodium EDTA, and saturated NaCl (abbreviated here as DESS) was tested for various applications in the preservation of nematodes for combined morphological and molecular analyses, as well as its less hazardous chemical properties.

TL;DR: It is argued that data-rich surveys and phylogenetic tools for analysis of barcode sequences are an essential component of the exploration of phyla with a high fraction of undiscovered species.