A new species of Thaumastoderma(Gastrotricha: Macrodasyida) from the Antarctic deep sea with a phylogenetic analysis of the whole genus
A new species of the marine gastrotrich taxon Thaumastoderma is described. A single specimen of this species, Thaumastoderma antarctica sp. nov., was extracted from silty sediment sampled at one station of the Andeep-1 cruise, about 150 km to the north of the South Shetland Islands (Drake Passage, S...
Published in: | Journal of the Marine Biological Association of the United Kingdom |
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Cambridge University Press (CUP)
2009
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Online Access: | http://dx.doi.org/10.1017/s002531540900085x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S002531540900085X |
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crcambridgeupr:10.1017/s002531540900085x 2024-09-15T17:43:16+00:00 A new species of Thaumastoderma(Gastrotricha: Macrodasyida) from the Antarctic deep sea with a phylogenetic analysis of the whole genus Kieneke, Alexander 2009 http://dx.doi.org/10.1017/s002531540900085x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S002531540900085X en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Journal of the Marine Biological Association of the United Kingdom volume 90, issue 3, page 575-584 ISSN 0025-3154 1469-7769 journal-article 2009 crcambridgeupr https://doi.org/10.1017/s002531540900085x 2024-07-24T04:04:01Z A new species of the marine gastrotrich taxon Thaumastoderma is described. A single specimen of this species, Thaumastoderma antarctica sp. nov., was extracted from silty sediment sampled at one station of the Andeep-1 cruise, about 150 km to the north of the South Shetland Islands (Drake Passage, South Atlantic Ocean). This paper provides the first record of this genus from the deep sea and the second description of a macrodasyid gastrotrich living in an abyssal habitat. The new species is characterized by several apomorphic features, among them a caudal pair of strongly elongated dorsal cirrata tubes. A phylogenetic analysis of the genus Thaumastoderma reveals that Th. antarctica is closely related to Th. coronarium and Th. appendiculatum . Furthermore, the analysis offers an evolutionary scenario and a hypothesis for the internal phylogeny of this taxon while supporting its monophyly. It is the first time a cladistic analysis has been conducted for a delimited group of gastrotrichs, i.e. for all known members of a genus. Article in Journal/Newspaper Antarc* Antarctic Antarctica Drake Passage South Atlantic Ocean South Shetland Islands Cambridge University Press Journal of the Marine Biological Association of the United Kingdom 90 3 575 584 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
A new species of the marine gastrotrich taxon Thaumastoderma is described. A single specimen of this species, Thaumastoderma antarctica sp. nov., was extracted from silty sediment sampled at one station of the Andeep-1 cruise, about 150 km to the north of the South Shetland Islands (Drake Passage, South Atlantic Ocean). This paper provides the first record of this genus from the deep sea and the second description of a macrodasyid gastrotrich living in an abyssal habitat. The new species is characterized by several apomorphic features, among them a caudal pair of strongly elongated dorsal cirrata tubes. A phylogenetic analysis of the genus Thaumastoderma reveals that Th. antarctica is closely related to Th. coronarium and Th. appendiculatum . Furthermore, the analysis offers an evolutionary scenario and a hypothesis for the internal phylogeny of this taxon while supporting its monophyly. It is the first time a cladistic analysis has been conducted for a delimited group of gastrotrichs, i.e. for all known members of a genus. |
format |
Article in Journal/Newspaper |
author |
Kieneke, Alexander |
spellingShingle |
Kieneke, Alexander A new species of Thaumastoderma(Gastrotricha: Macrodasyida) from the Antarctic deep sea with a phylogenetic analysis of the whole genus |
author_facet |
Kieneke, Alexander |
author_sort |
Kieneke, Alexander |
title |
A new species of Thaumastoderma(Gastrotricha: Macrodasyida) from the Antarctic deep sea with a phylogenetic analysis of the whole genus |
title_short |
A new species of Thaumastoderma(Gastrotricha: Macrodasyida) from the Antarctic deep sea with a phylogenetic analysis of the whole genus |
title_full |
A new species of Thaumastoderma(Gastrotricha: Macrodasyida) from the Antarctic deep sea with a phylogenetic analysis of the whole genus |
title_fullStr |
A new species of Thaumastoderma(Gastrotricha: Macrodasyida) from the Antarctic deep sea with a phylogenetic analysis of the whole genus |
title_full_unstemmed |
A new species of Thaumastoderma(Gastrotricha: Macrodasyida) from the Antarctic deep sea with a phylogenetic analysis of the whole genus |
title_sort |
new species of thaumastoderma(gastrotricha: macrodasyida) from the antarctic deep sea with a phylogenetic analysis of the whole genus |
publisher |
Cambridge University Press (CUP) |
publishDate |
2009 |
url |
http://dx.doi.org/10.1017/s002531540900085x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S002531540900085X |
genre |
Antarc* Antarctic Antarctica Drake Passage South Atlantic Ocean South Shetland Islands |
genre_facet |
Antarc* Antarctic Antarctica Drake Passage South Atlantic Ocean South Shetland Islands |
op_source |
Journal of the Marine Biological Association of the United Kingdom volume 90, issue 3, page 575-584 ISSN 0025-3154 1469-7769 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s002531540900085x |
container_title |
Journal of the Marine Biological Association of the United Kingdom |
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90 |
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3 |
container_start_page |
575 |
op_container_end_page |
584 |
_version_ |
1810490134373597184 |