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NameFONSECA G., DERYCKE S., MOENS T. (2008). Integrative taxonomy in two free-living nematode species complexes Biological Journal of the Linnean Society, 2008, 94, 737–753.
AuthorsFONSECA G., DERYCKE S., MOENS T.
Year2008
TitleIntegrative taxonomy in two free-living nematode species complexes
JournalBiological Journal of the Linnean Society, 2008, 94, 737–753.
Type Publication
NoteNeMys doc_id: 17894
Full textAvailable for editors  PDF available
AbstractIntegrative taxonomy considers species boundaries from multiple, complementary perspectives, with the main objective being to compare the observed data against the predictions of the methodologies used. In the present study we used three methods for delineating species boundaries within the cosmopolitan nematode species Rhabditis (Pellioditis) marina and Halomonhystera disjuncta. First, phylogenetic relationships among molecular sequences from the mitochondrial cytochrome oxidase c subunit 1 gene (COI), and from two nuclear regions, internal transcribed spacer (ITS) and D2D3, were analysed. Subsequently, multivariate morphometric analysis was used to investigate whether concordant molecular lineages were also morphologically distinct. When morphological differences were found, typological taxonomy was performed to identify fixed or non-overlapping characters between lineages. Interbreeding experiments were conducted between the two closest related lineages of R. (P.) marina to investigate potential reproductive isolation. This integrative approach confirmed the presence of several species within each nominal species: molecular lineages were concordant across two independent loci (COI and ITS), and were characterized by significant morphological divergence. Most lineages were also detectable in the D2D3 region, but were less resolved. The two lineages investigated in our study did not produce offspring. Our results highlight that classical taxonomy grossly underestimates species diversity within the phylum Nematoda.
Taxa
(3)
Unreviewed: has not been verified by a taxonomic editorHalomonhystera Andrássy, 2006 (additional source)
Checked: verified by a taxonomic editorHalomonhystera disjuncta (Bastian, 1865) Andrassy, 2006 (additional source)
Checked: verified by a taxonomic editorRhabditis (Pellioditis) marina (Bastian, 1865) Andrassy, 1984 accepted as Checked: verified by a taxonomic editorLitoditis marina (Bastian, 1865) Sudhaus, 2011 (additional source)
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2014-06-18 16:05:08Z  created  Vanaverbeke, Jan
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