Occurrence and distribution of Pseudoscalibregma and Scalibregma (Annelida, Scalibregmatidae) in the deep Nordic Seas, with the description of Scalibregma hanseni n. sp.
Until recent years, only a few scalibregmatid species have been known from the Nordic Seas, largely from shelf and coastal waters. Access to a large collection from deep areas has made it possible to provide more knowledge on the diversity of this group in the area. Pseudoscalibregma parvum (Hansen,...
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ftmagnoliapress:oai:ojs.mapress.com:article/31520 2023-05-15T15:39:07+02:00 Occurrence and distribution of Pseudoscalibregma and Scalibregma (Annelida, Scalibregmatidae) in the deep Nordic Seas, with the description of Scalibregma hanseni n. sp. BAKKEN, TORKILD OUG, EIVIND KONGSRUD, JON ANDERS 2013-01-06 application/pdf https://www.mapress.com/j/zt/article/view/zootaxa.3753.2.1 https://doi.org/10.11646/zootaxa.3753.2.1 eng eng Mangolia Press https://www.mapress.com/j/zt/article/view/zootaxa.3753.2.1/30880 Copyright (c) 2016 Zootaxa Zootaxa; Vol 3753, No 2: 6 Jan. 2014; 101–117 1175-5334 1175-5326 10.11646/zootaxa.3753.2 Polychaeta Norwegian Sea MAREANO deep sea Annelida info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2013 ftmagnoliapress https://doi.org/10.11646/zootaxa.3753.2.1 2019-09-17T15:03:35Z Until recent years, only a few scalibregmatid species have been known from the Nordic Seas, largely from shelf and coastal waters. Access to a large collection from deep areas has made it possible to provide more knowledge on the diversity of this group in the area. Pseudoscalibregma parvum (Hansen, 1879) is here redescribed. The species has a wide geographic distribution in the Nordic Seas, the Barents Sea, and the Kara Sea. Type specimens of Eumenia longisetosa Théel, 1879 were found to be similar to specimens of P. parvum, confirming the synonymy of the species. A new species, Scalibregma hanseni n. sp., is described from specimens found on the continental slope. It is particularly characterised by having three pairs of rather simple branchiae. Both P. parvum and S. hanseni have small spines in the most anterior chaetiger(s), resembling spines reported from a few other Pseudoscalibregma and Scalibregma species and supporting the need to emend the genus diagnosis of Pseudoscalibregma. Scalibregma abyssorum Hansen, 1879 was reassessed and considered to be a nomen dubium. Scalibregma inflatum, which has a wide distribution along the Norwegian coast and continental shelf, is found to be restricted to depths above about 900 m. Depths from 600–800 m on the continental slope represent a transition zone with fluctuations between temperate North Atlantic water (about 7°C) and cold Norwegian Sea water (below 0°C). The three species coexist in this zone, whereas P. parvum and S. hanseni n. sp. extend down to 1700 and 1200 m, respectively, on the slope at temperatures below 0°C. Article in Journal/Newspaper Barents Sea Kara Sea Nordic Seas North Atlantic Norwegian Sea Magnolia press Barents Sea Norwegian Sea Kara Sea Zootaxa 3753 2 101 |
institution |
Open Polar |
collection |
Magnolia press |
op_collection_id |
ftmagnoliapress |
language |
English |
topic |
Polychaeta Norwegian Sea MAREANO deep sea Annelida |
spellingShingle |
Polychaeta Norwegian Sea MAREANO deep sea Annelida BAKKEN, TORKILD OUG, EIVIND KONGSRUD, JON ANDERS Occurrence and distribution of Pseudoscalibregma and Scalibregma (Annelida, Scalibregmatidae) in the deep Nordic Seas, with the description of Scalibregma hanseni n. sp. |
topic_facet |
Polychaeta Norwegian Sea MAREANO deep sea Annelida |
description |
Until recent years, only a few scalibregmatid species have been known from the Nordic Seas, largely from shelf and coastal waters. Access to a large collection from deep areas has made it possible to provide more knowledge on the diversity of this group in the area. Pseudoscalibregma parvum (Hansen, 1879) is here redescribed. The species has a wide geographic distribution in the Nordic Seas, the Barents Sea, and the Kara Sea. Type specimens of Eumenia longisetosa Théel, 1879 were found to be similar to specimens of P. parvum, confirming the synonymy of the species. A new species, Scalibregma hanseni n. sp., is described from specimens found on the continental slope. It is particularly characterised by having three pairs of rather simple branchiae. Both P. parvum and S. hanseni have small spines in the most anterior chaetiger(s), resembling spines reported from a few other Pseudoscalibregma and Scalibregma species and supporting the need to emend the genus diagnosis of Pseudoscalibregma. Scalibregma abyssorum Hansen, 1879 was reassessed and considered to be a nomen dubium. Scalibregma inflatum, which has a wide distribution along the Norwegian coast and continental shelf, is found to be restricted to depths above about 900 m. Depths from 600–800 m on the continental slope represent a transition zone with fluctuations between temperate North Atlantic water (about 7°C) and cold Norwegian Sea water (below 0°C). The three species coexist in this zone, whereas P. parvum and S. hanseni n. sp. extend down to 1700 and 1200 m, respectively, on the slope at temperatures below 0°C. |
format |
Article in Journal/Newspaper |
author |
BAKKEN, TORKILD OUG, EIVIND KONGSRUD, JON ANDERS |
author_facet |
BAKKEN, TORKILD OUG, EIVIND KONGSRUD, JON ANDERS |
author_sort |
BAKKEN, TORKILD |
title |
Occurrence and distribution of Pseudoscalibregma and Scalibregma (Annelida, Scalibregmatidae) in the deep Nordic Seas, with the description of Scalibregma hanseni n. sp. |
title_short |
Occurrence and distribution of Pseudoscalibregma and Scalibregma (Annelida, Scalibregmatidae) in the deep Nordic Seas, with the description of Scalibregma hanseni n. sp. |
title_full |
Occurrence and distribution of Pseudoscalibregma and Scalibregma (Annelida, Scalibregmatidae) in the deep Nordic Seas, with the description of Scalibregma hanseni n. sp. |
title_fullStr |
Occurrence and distribution of Pseudoscalibregma and Scalibregma (Annelida, Scalibregmatidae) in the deep Nordic Seas, with the description of Scalibregma hanseni n. sp. |
title_full_unstemmed |
Occurrence and distribution of Pseudoscalibregma and Scalibregma (Annelida, Scalibregmatidae) in the deep Nordic Seas, with the description of Scalibregma hanseni n. sp. |
title_sort |
occurrence and distribution of pseudoscalibregma and scalibregma (annelida, scalibregmatidae) in the deep nordic seas, with the description of scalibregma hanseni n. sp. |
publisher |
Mangolia Press |
publishDate |
2013 |
url |
https://www.mapress.com/j/zt/article/view/zootaxa.3753.2.1 https://doi.org/10.11646/zootaxa.3753.2.1 |
geographic |
Barents Sea Norwegian Sea Kara Sea |
geographic_facet |
Barents Sea Norwegian Sea Kara Sea |
genre |
Barents Sea Kara Sea Nordic Seas North Atlantic Norwegian Sea |
genre_facet |
Barents Sea Kara Sea Nordic Seas North Atlantic Norwegian Sea |
op_source |
Zootaxa; Vol 3753, No 2: 6 Jan. 2014; 101–117 1175-5334 1175-5326 10.11646/zootaxa.3753.2 |
op_relation |
https://www.mapress.com/j/zt/article/view/zootaxa.3753.2.1/30880 |
op_rights |
Copyright (c) 2016 Zootaxa |
op_doi |
https://doi.org/10.11646/zootaxa.3753.2.1 |
container_title |
Zootaxa |
container_volume |
3753 |
container_issue |
2 |
container_start_page |
101 |
_version_ |
1766370554002014208 |