Evolution in the deep sea: a combined analysis of the earliest diverging living chitons (Mollusca : Polyplacophora : Lepidopleurida)
Lepidopleurida is the earliest diverged group of living polyplacophoran molluscs. They are found predominantly in the deep sea, including sunken wood, cold seeps, other abyssal habitats, and a few species are found in shallow water. The group is morphologically identified by anatomical features of t...
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2011
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Online Access: | https://pure.qub.ac.uk/en/publications/dcd52611-9a3b-4a7b-b379-715e64ffde23 https://doi.org/10.1071/IS10028 |
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ftqueensubelpubl:oai:pure.qub.ac.uk/portal:publications/dcd52611-9a3b-4a7b-b379-715e64ffde23 2024-09-15T17:47:57+00:00 Evolution in the deep sea: a combined analysis of the earliest diverging living chitons (Mollusca : Polyplacophora : Lepidopleurida) Sigwart, Julia D. Schwabe, Enrico Saito, Hiroshi Samadi, Sarah Giribet, Gonzalo 2011-04-29 https://pure.qub.ac.uk/en/publications/dcd52611-9a3b-4a7b-b379-715e64ffde23 https://doi.org/10.1071/IS10028 eng eng https://pure.qub.ac.uk/en/publications/dcd52611-9a3b-4a7b-b379-715e64ffde23 info:eu-repo/semantics/closedAccess Sigwart , J D , Schwabe , E , Saito , H , Samadi , S & Giribet , G 2011 , ' Evolution in the deep sea: a combined analysis of the earliest diverging living chitons (Mollusca : Polyplacophora : Lepidopleurida) ' , Invertebrate Systematics , vol. 24 , no. 6 , pp. 560-572 . https://doi.org/10.1071/IS10028 /dk/atira/pure/subjectarea/asjc/1100/1105 name=Ecology Evolution Behavior and Systematics article 2011 ftqueensubelpubl https://doi.org/10.1071/IS10028 2024-07-15T23:49:24Z Lepidopleurida is the earliest diverged group of living polyplacophoran molluscs. They are found predominantly in the deep sea, including sunken wood, cold seeps, other abyssal habitats, and a few species are found in shallow water. The group is morphologically identified by anatomical features of their gills, sensory aesthetes, and gametes. Their shell features closely resemble the oldest fossils that can be identified as modern polyplacophorans. We present the first molecular phylogenetic study of this group, and also the first combined phylogenetic analysis for any chiton, including three gene regions and 69 morphological characters. The results show that Lepidopleurida is unambiguously monophyletic, and the nine genera fall into five distinct clades, which partly support the current view of polyplacophoran taxonomy. The genus Hanleyella Sirenko, 1973 is included in the family Protochitonidae, and Ferreiraellidae constitutes another distinct clade. The large cosmopolitan genus Leptochiton Gray, 1847 is not monophyletic; Leptochiton and Leptochitonidae sensu stricto are restricted to North Atlantic and Mediterranean taxa. Leptochitonidae s. str. is sister to Protochitonidae. The results also suggest two separate clades independently inhabiting sunken wood substrates in the south-west Pacific. Antarctic and other chemosynthetic-dwelling species may be derived from wood-living species. Substantial taxonomic revision remains to be done to resolve lepidopleuran classification, but the phylogeny presented here is a dramatic step forward in clarifying the relationships within this interesting group. Article in Journal/Newspaper Antarc* Antarctic North Atlantic Queen's University Belfast Research Portal Invertebrate Systematics 24 6 560 |
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Open Polar |
collection |
Queen's University Belfast Research Portal |
op_collection_id |
ftqueensubelpubl |
language |
English |
topic |
/dk/atira/pure/subjectarea/asjc/1100/1105 name=Ecology Evolution Behavior and Systematics |
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/dk/atira/pure/subjectarea/asjc/1100/1105 name=Ecology Evolution Behavior and Systematics Sigwart, Julia D. Schwabe, Enrico Saito, Hiroshi Samadi, Sarah Giribet, Gonzalo Evolution in the deep sea: a combined analysis of the earliest diverging living chitons (Mollusca : Polyplacophora : Lepidopleurida) |
topic_facet |
/dk/atira/pure/subjectarea/asjc/1100/1105 name=Ecology Evolution Behavior and Systematics |
description |
Lepidopleurida is the earliest diverged group of living polyplacophoran molluscs. They are found predominantly in the deep sea, including sunken wood, cold seeps, other abyssal habitats, and a few species are found in shallow water. The group is morphologically identified by anatomical features of their gills, sensory aesthetes, and gametes. Their shell features closely resemble the oldest fossils that can be identified as modern polyplacophorans. We present the first molecular phylogenetic study of this group, and also the first combined phylogenetic analysis for any chiton, including three gene regions and 69 morphological characters. The results show that Lepidopleurida is unambiguously monophyletic, and the nine genera fall into five distinct clades, which partly support the current view of polyplacophoran taxonomy. The genus Hanleyella Sirenko, 1973 is included in the family Protochitonidae, and Ferreiraellidae constitutes another distinct clade. The large cosmopolitan genus Leptochiton Gray, 1847 is not monophyletic; Leptochiton and Leptochitonidae sensu stricto are restricted to North Atlantic and Mediterranean taxa. Leptochitonidae s. str. is sister to Protochitonidae. The results also suggest two separate clades independently inhabiting sunken wood substrates in the south-west Pacific. Antarctic and other chemosynthetic-dwelling species may be derived from wood-living species. Substantial taxonomic revision remains to be done to resolve lepidopleuran classification, but the phylogeny presented here is a dramatic step forward in clarifying the relationships within this interesting group. |
format |
Article in Journal/Newspaper |
author |
Sigwart, Julia D. Schwabe, Enrico Saito, Hiroshi Samadi, Sarah Giribet, Gonzalo |
author_facet |
Sigwart, Julia D. Schwabe, Enrico Saito, Hiroshi Samadi, Sarah Giribet, Gonzalo |
author_sort |
Sigwart, Julia D. |
title |
Evolution in the deep sea: a combined analysis of the earliest diverging living chitons (Mollusca : Polyplacophora : Lepidopleurida) |
title_short |
Evolution in the deep sea: a combined analysis of the earliest diverging living chitons (Mollusca : Polyplacophora : Lepidopleurida) |
title_full |
Evolution in the deep sea: a combined analysis of the earliest diverging living chitons (Mollusca : Polyplacophora : Lepidopleurida) |
title_fullStr |
Evolution in the deep sea: a combined analysis of the earliest diverging living chitons (Mollusca : Polyplacophora : Lepidopleurida) |
title_full_unstemmed |
Evolution in the deep sea: a combined analysis of the earliest diverging living chitons (Mollusca : Polyplacophora : Lepidopleurida) |
title_sort |
evolution in the deep sea: a combined analysis of the earliest diverging living chitons (mollusca : polyplacophora : lepidopleurida) |
publishDate |
2011 |
url |
https://pure.qub.ac.uk/en/publications/dcd52611-9a3b-4a7b-b379-715e64ffde23 https://doi.org/10.1071/IS10028 |
genre |
Antarc* Antarctic North Atlantic |
genre_facet |
Antarc* Antarctic North Atlantic |
op_source |
Sigwart , J D , Schwabe , E , Saito , H , Samadi , S & Giribet , G 2011 , ' Evolution in the deep sea: a combined analysis of the earliest diverging living chitons (Mollusca : Polyplacophora : Lepidopleurida) ' , Invertebrate Systematics , vol. 24 , no. 6 , pp. 560-572 . https://doi.org/10.1071/IS10028 |
op_relation |
https://pure.qub.ac.uk/en/publications/dcd52611-9a3b-4a7b-b379-715e64ffde23 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1071/IS10028 |
container_title |
Invertebrate Systematics |
container_volume |
24 |
container_issue |
6 |
container_start_page |
560 |
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1810497703481704448 |