Incongruence between molecular phylogeny and morphological classification in amphipod crustaceans: a case study of Antarctic lysianassoids
In the Southern Ocean, the superfamily Lysianassoidea is one of the most important amphipod groups, both in terms of species number and abundance. Dominant members of this superfamily are species belonging to the orchomenid genus complex. The first molecular phylogenetic analysis on Antarctic specie...
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ftunistlouisbrus:oai:dial.uclouvain.be:boreal:121060 2024-05-12T07:55:45+00:00 Incongruence between molecular phylogeny and morphological classification in amphipod crustaceans: a case study of Antarctic lysianassoids Havermans, Charlotte Nagy, Zoltán T. Sonet, Gontran De Broyer, Claude Martin, Patrick EDIT Young Taxonomist Symposium UCL - SST/ELI - Earth and Life Institute 2009 http://hdl.handle.net/2078/121060 eng eng boreal:121060 http://hdl.handle.net/2078/121060 info:eu-repo/semantics/conferenceObject 2009 ftunistlouisbrus 2024-04-18T18:02:39Z In the Southern Ocean, the superfamily Lysianassoidea is one of the most important amphipod groups, both in terms of species number and abundance. Dominant members of this superfamily are species belonging to the orchomenid genus complex. The first molecular phylogenetic analysis on Antarctic species of these orchomenid genera is presented here, providing a framework for a systematic revision of these taxa. The current classification of the orchomenid genera is mainly based on mouthpart morphology. The validity of these morphological characters was assessed by resolving the phylogenetic relationships using nuclear 28S rRNA and mitochondrial cytochrome oxidase subunit I sequences. The molecular data rejected most of the previously proposed taxonomic subdivisions within this complex, since several genera appeared to be non-monophyletic. This implies that the diagnostic characters are likely a result of convergent evolution. Conference Object Antarc* Antarctic Southern Ocean DIAL@USL-B (Université Saint-Louis, Bruxelles) Antarctic Southern Ocean |
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Open Polar |
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DIAL@USL-B (Université Saint-Louis, Bruxelles) |
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ftunistlouisbrus |
language |
English |
description |
In the Southern Ocean, the superfamily Lysianassoidea is one of the most important amphipod groups, both in terms of species number and abundance. Dominant members of this superfamily are species belonging to the orchomenid genus complex. The first molecular phylogenetic analysis on Antarctic species of these orchomenid genera is presented here, providing a framework for a systematic revision of these taxa. The current classification of the orchomenid genera is mainly based on mouthpart morphology. The validity of these morphological characters was assessed by resolving the phylogenetic relationships using nuclear 28S rRNA and mitochondrial cytochrome oxidase subunit I sequences. The molecular data rejected most of the previously proposed taxonomic subdivisions within this complex, since several genera appeared to be non-monophyletic. This implies that the diagnostic characters are likely a result of convergent evolution. |
author2 |
UCL - SST/ELI - Earth and Life Institute |
format |
Conference Object |
author |
Havermans, Charlotte Nagy, Zoltán T. Sonet, Gontran De Broyer, Claude Martin, Patrick EDIT Young Taxonomist Symposium |
spellingShingle |
Havermans, Charlotte Nagy, Zoltán T. Sonet, Gontran De Broyer, Claude Martin, Patrick EDIT Young Taxonomist Symposium Incongruence between molecular phylogeny and morphological classification in amphipod crustaceans: a case study of Antarctic lysianassoids |
author_facet |
Havermans, Charlotte Nagy, Zoltán T. Sonet, Gontran De Broyer, Claude Martin, Patrick EDIT Young Taxonomist Symposium |
author_sort |
Havermans, Charlotte |
title |
Incongruence between molecular phylogeny and morphological classification in amphipod crustaceans: a case study of Antarctic lysianassoids |
title_short |
Incongruence between molecular phylogeny and morphological classification in amphipod crustaceans: a case study of Antarctic lysianassoids |
title_full |
Incongruence between molecular phylogeny and morphological classification in amphipod crustaceans: a case study of Antarctic lysianassoids |
title_fullStr |
Incongruence between molecular phylogeny and morphological classification in amphipod crustaceans: a case study of Antarctic lysianassoids |
title_full_unstemmed |
Incongruence between molecular phylogeny and morphological classification in amphipod crustaceans: a case study of Antarctic lysianassoids |
title_sort |
incongruence between molecular phylogeny and morphological classification in amphipod crustaceans: a case study of antarctic lysianassoids |
publishDate |
2009 |
url |
http://hdl.handle.net/2078/121060 |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_relation |
boreal:121060 http://hdl.handle.net/2078/121060 |
_version_ |
1798835593456648192 |