Phylogenetic confirmation of the genus Robbea (Nematoda: Desmodoridae, 
Stilbonematinae) with the description of three new species

Ott, J.; Gruber-Vodicka, H.; Leisch, N.; Zimmermann, J.

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Phylogenetic confirmation of the genus Robbea (Nematoda: Desmodoridae, Stilbonematinae) with the description of three new species

MPS-Authors

/persons/resource/persons210415

Gruber-Vodicka, H.
Department of Symbiosis, Max Planck Institute for Marine Microbiology, Max Planck Society;

/persons/resource/persons210572

Leisch, N.
Department of Symbiosis, Max Planck Institute for Marine Microbiology, Max Planck Society;

/persons/resource/persons210907

Zimmermann, J.
Department of Symbiosis, Max Planck Institute for Marine Microbiology, Max Planck Society;

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

Gruber14.pdf
(Publisher version), 2MB

Supplementary Material (public)

There is no public supplementary material available

Citation

Ott, J., Gruber-Vodicka, H., Leisch, N., & Zimmermann, J. (2014). Phylogenetic confirmation of the genus Robbea (Nematoda: Desmodoridae, Stilbonematinae) with the description of three new species. Systematics and Biodiversity, 12(4): 1, pp. 434-455.

Cite as: https://hdl.handle.net/21.11116/0000-0001-C4F3-F

Abstract

The Stilbonematinae are a monophyletic group of marine nematodes that are characterized by a coat of thiotrophic bacterial symbionts. Among the ten known genera of the Stilbonematinae, the genus RobbeaGerlach 1956 had a problematic taxonomic history of synonymizations and indications of polyphyletic origin. Here we describe three new species of the genus, R. hypermnestra sp. nov., R. ruetzleri sp. nov. and R. agricola sp. nov., using conventional light microscopy, interference contrast microscopy and SEM. We provide 18S rRNA gene sequences of all three species, together with new sequences for the genera Catanema and Leptonemella. Both our morphological analyses as well as our phylogenetic reconstructions corroborate the genus Robbea. In our phylogenetic analysis the three species of the genus Robbea form a distinct clade in the Stilbonematinae radiation and are clearly separated from the clade of the genus Catanema, which has previously been synonymized with Robbea. Surprisingly, in R. hypermnestra sp. nov. all females are intersexes exhibiting male sexual characters. Our extended dataset of Stilbonematinae 18S rRNA genes for the first time allows the identification of the different genera, e.g. in a barcoding approach.http://zoobank.org/urn:lsid:zoobank.org:pub:D37C3F5A-CF2B-40E6-8B09-3C72EEED60B0