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Morphological and molecular characterisation of Aporcelaimellus simplex (Thorne & Swanger, 1936) Loof & Coomans, 1970 and a new concept for Aporcella Andrássy, 2002 (Dorylaimida: Aporcelaimidae)

Morphological and molecular characterisation of Aporcelaimellus simplex (Thorne & Swanger, 1936)... This contribution presents a study of Iberian and Californian populations of Aporcelaimellus simplex , including morphological, morphometric and molecular data. The species is characterised and distinguished by its lip region offset by an expansion, pars refringens vaginae absent, and conical tail with a small but distinct hyaline terminal portion. No significant difference exists between American and European populations. Molecular data and the derived evolutionary tree show a topology in which this species forms a well-supported group with members of Discolaiminae, far from other representatives of Aporcelaimellus. Putting special emphasis in the absence of pars refringens vaginae , A. simplex is transferred to the genus Aporcella . The taxonomy of this genus is revised in depth, with the proposal of an emended diagnosis, the provision of a list of 13 valid species (mostly new combinations from Aporcelaimellus ) as well as a key to their identification and a compendium of their main morphometrics. Aporcella debruinae sp. n. is proposed for Aporcelaimellus papillatus apud de Bruin & Heyns, 1992. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nematology Brill

Morphological and molecular characterisation of Aporcelaimellus simplex (Thorne & Swanger, 1936) Loof & Coomans, 1970 and a new concept for Aporcella Andrássy, 2002 (Dorylaimida: Aporcelaimidae)

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Publisher
Brill
Copyright
© Koninklijke Brill NV, Leiden, The Netherlands
Subject
Articles
ISSN
1388-5545
eISSN
1568-5411
DOI
10.1163/156854112X651320
Publisher site
See Article on Publisher Site

Abstract

This contribution presents a study of Iberian and Californian populations of Aporcelaimellus simplex , including morphological, morphometric and molecular data. The species is characterised and distinguished by its lip region offset by an expansion, pars refringens vaginae absent, and conical tail with a small but distinct hyaline terminal portion. No significant difference exists between American and European populations. Molecular data and the derived evolutionary tree show a topology in which this species forms a well-supported group with members of Discolaiminae, far from other representatives of Aporcelaimellus. Putting special emphasis in the absence of pars refringens vaginae , A. simplex is transferred to the genus Aporcella . The taxonomy of this genus is revised in depth, with the proposal of an emended diagnosis, the provision of a list of 13 valid species (mostly new combinations from Aporcelaimellus ) as well as a key to their identification and a compendium of their main morphometrics. Aporcella debruinae sp. n. is proposed for Aporcelaimellus papillatus apud de Bruin & Heyns, 1992.

Journal

Nematology – Brill

Published: Jan 1, 2013

Keywords: Aporcella debruinae sp. n.; Bayesian inference; D2-D3 expansion segments; description; key; LSU rDNA; morphology; morphometrics; new combination; new species; taxonomy

References

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