Marine free-living nematodes associated with symbiotic bacteria in deep-sea canyons of north-east Atlantic Ocean
Two nematode species living in association with chemoautotrophic prokaryotes were found in two deep-sea canyon/channel systems, the Whittard Canyon and Gollum Channels, north-east Atlantic. Parabostrichus bathyalis gen. nov. sp. nov. (Desmodorida: Desmodoridae: Stilbonematinae) relates to Eubostrich...
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ftunivgent:oai:archive.ugent.be:2023092 2023-10-01T03:58:08+02:00 Marine free-living nematodes associated with symbiotic bacteria in deep-sea canyons of north-east Atlantic Ocean Tchesunov, Alexei V Ingels, Jeroen Popova, Ekaterina V 2012 application/pdf https://biblio.ugent.be/publication/2023092 http://hdl.handle.net/1854/LU-2023092 https://doi.org/10.1017/S0025315411002116 https://biblio.ugent.be/publication/2023092/file/2023107 eng eng info:eu-repo/grantAgreement/EC/FP7/226354 https://biblio.ugent.be/publication/2023092 http://hdl.handle.net/1854/LU-2023092 http://dx.doi.org/10.1017/S0025315411002116 https://biblio.ugent.be/publication/2023092/file/2023107 No license (in copyright) info:eu-repo/semantics/restrictedAccess JOURNAL OF THE MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM ISSN: 0025-3154 Biology and Life Sciences Stilbonematinae symbiotic bacteria Parabostrichus new species free-living nematodes description chemoautotrophy Astomonema bathyal ECTOSYMBIOTIC BACTERIA ASTOMONEMA-SOUTHWARDORUM taxonomy SUBMARINE CANYONS GUTLESS NEMATODE MEIOBENTHOS PRODUCTIVITY journalArticle info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2012 ftunivgent https://doi.org/10.1017/S0025315411002116 2023-09-06T22:30:02Z Two nematode species living in association with chemoautotrophic prokaryotes were found in two deep-sea canyon/channel systems, the Whittard Canyon and Gollum Channels, north-east Atlantic. Parabostrichus bathyalis gen. nov. sp. nov. (Desmodorida: Desmodoridae: Stilbonematinae) relates to Eubostrichus Greeff 1869, but differs in having well-developed paired dorso-caudal apophyses of the gubernaculum, small pre- and postcloacal latero-ventral papillae with short apical setae, elongate tail with slender posterior portion, and the absence of thorn-like setae (porids) in males. Body of P. Bathyalis is loosely covered with elongate cells of prokaryote ectosymbionts. Astomonema southwardorum Austen et al. 1993, originally found at a methane seep pockmark in the North Sea, constitutes a significant portion of nematode communities in certain areas of the deep-sea canyon/channel systems. Taxonomic difficulties within Astomonematinae are discussed in light of the character state of paired male gonads discovered in A. southwardorum. Canyon populations of A. southwardorum are characterized by frequent loss of part of the hindbody and woundhealing posterior to the vulva in females. Both species tend to occur in deeper subsurface layers of the bottom sediment. Abundance of the nematode species associated with aggregations of ectosymbiotic (Parabostrichus) and endosymbiotic (Astomonema) chemoautotrophic bacteria may indicate reduced conditions at sites in these deep-sea canyons/channels and suggests a potentially substantial ecological role for chemolitotrophic fauna there. Article in Journal/Newspaper North East Atlantic Ghent University Academic Bibliography Journal of the Marine Biological Association of the United Kingdom 92 6 1257 1271 |
institution |
Open Polar |
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Ghent University Academic Bibliography |
op_collection_id |
ftunivgent |
language |
English |
topic |
Biology and Life Sciences Stilbonematinae symbiotic bacteria Parabostrichus new species free-living nematodes description chemoautotrophy Astomonema bathyal ECTOSYMBIOTIC BACTERIA ASTOMONEMA-SOUTHWARDORUM taxonomy SUBMARINE CANYONS GUTLESS NEMATODE MEIOBENTHOS PRODUCTIVITY |
spellingShingle |
Biology and Life Sciences Stilbonematinae symbiotic bacteria Parabostrichus new species free-living nematodes description chemoautotrophy Astomonema bathyal ECTOSYMBIOTIC BACTERIA ASTOMONEMA-SOUTHWARDORUM taxonomy SUBMARINE CANYONS GUTLESS NEMATODE MEIOBENTHOS PRODUCTIVITY Tchesunov, Alexei V Ingels, Jeroen Popova, Ekaterina V Marine free-living nematodes associated with symbiotic bacteria in deep-sea canyons of north-east Atlantic Ocean |
topic_facet |
Biology and Life Sciences Stilbonematinae symbiotic bacteria Parabostrichus new species free-living nematodes description chemoautotrophy Astomonema bathyal ECTOSYMBIOTIC BACTERIA ASTOMONEMA-SOUTHWARDORUM taxonomy SUBMARINE CANYONS GUTLESS NEMATODE MEIOBENTHOS PRODUCTIVITY |
description |
Two nematode species living in association with chemoautotrophic prokaryotes were found in two deep-sea canyon/channel systems, the Whittard Canyon and Gollum Channels, north-east Atlantic. Parabostrichus bathyalis gen. nov. sp. nov. (Desmodorida: Desmodoridae: Stilbonematinae) relates to Eubostrichus Greeff 1869, but differs in having well-developed paired dorso-caudal apophyses of the gubernaculum, small pre- and postcloacal latero-ventral papillae with short apical setae, elongate tail with slender posterior portion, and the absence of thorn-like setae (porids) in males. Body of P. Bathyalis is loosely covered with elongate cells of prokaryote ectosymbionts. Astomonema southwardorum Austen et al. 1993, originally found at a methane seep pockmark in the North Sea, constitutes a significant portion of nematode communities in certain areas of the deep-sea canyon/channel systems. Taxonomic difficulties within Astomonematinae are discussed in light of the character state of paired male gonads discovered in A. southwardorum. Canyon populations of A. southwardorum are characterized by frequent loss of part of the hindbody and woundhealing posterior to the vulva in females. Both species tend to occur in deeper subsurface layers of the bottom sediment. Abundance of the nematode species associated with aggregations of ectosymbiotic (Parabostrichus) and endosymbiotic (Astomonema) chemoautotrophic bacteria may indicate reduced conditions at sites in these deep-sea canyons/channels and suggests a potentially substantial ecological role for chemolitotrophic fauna there. |
format |
Article in Journal/Newspaper |
author |
Tchesunov, Alexei V Ingels, Jeroen Popova, Ekaterina V |
author_facet |
Tchesunov, Alexei V Ingels, Jeroen Popova, Ekaterina V |
author_sort |
Tchesunov, Alexei V |
title |
Marine free-living nematodes associated with symbiotic bacteria in deep-sea canyons of north-east Atlantic Ocean |
title_short |
Marine free-living nematodes associated with symbiotic bacteria in deep-sea canyons of north-east Atlantic Ocean |
title_full |
Marine free-living nematodes associated with symbiotic bacteria in deep-sea canyons of north-east Atlantic Ocean |
title_fullStr |
Marine free-living nematodes associated with symbiotic bacteria in deep-sea canyons of north-east Atlantic Ocean |
title_full_unstemmed |
Marine free-living nematodes associated with symbiotic bacteria in deep-sea canyons of north-east Atlantic Ocean |
title_sort |
marine free-living nematodes associated with symbiotic bacteria in deep-sea canyons of north-east atlantic ocean |
publishDate |
2012 |
url |
https://biblio.ugent.be/publication/2023092 http://hdl.handle.net/1854/LU-2023092 https://doi.org/10.1017/S0025315411002116 https://biblio.ugent.be/publication/2023092/file/2023107 |
genre |
North East Atlantic |
genre_facet |
North East Atlantic |
op_source |
JOURNAL OF THE MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM ISSN: 0025-3154 |
op_relation |
info:eu-repo/grantAgreement/EC/FP7/226354 https://biblio.ugent.be/publication/2023092 http://hdl.handle.net/1854/LU-2023092 http://dx.doi.org/10.1017/S0025315411002116 https://biblio.ugent.be/publication/2023092/file/2023107 |
op_rights |
No license (in copyright) info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1017/S0025315411002116 |
container_title |
Journal of the Marine Biological Association of the United Kingdom |
container_volume |
92 |
container_issue |
6 |
container_start_page |
1257 |
op_container_end_page |
1271 |
_version_ |
1778530624170098688 |