WoRMS source details

Bakken, T.; Oug, E.; Kongsrud, J. A. (2014). Occurrence and distribution of Pseudoscalibregma and Scalibregma (Annelida, Scalibregmatidae) in the deep Nordic Seas, with the description of Scalibregma hanseni n. sp. Zootaxa. 3753(2): 101-117.
172710
10.11646/zootaxa.3753.2.1 [view]
urn:lsid:zoobank.org:pub:42BA9ED6-75D6-42A2-9D1C-9BAD17B5E9C5 [view]
Bakken, T.; Oug, E.; Kongsrud, J. A.
2014
Occurrence and distribution of<em> Pseudoscalibregma</em> and <em>Scalibregma </em>(Annelida, Scalibregmatidae) in the deep Nordic Seas, with the description of <em>Scalibregma hanseni</em> n. sp.
Zootaxa
3753(2): 101-117
Publication
World Polychaeta Database (WPolyDb). Open access PDF. Correct date of publication 6 Jan. 2014 as on the pdf, but a dating error at Zootaxa website erroneously/ambiguously also has 6/1/2013. See also the Zoobank registration date of 2 Jan 2014
Available for editors  PDF available [request]
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.
Arctic-Boreal marine
Systematics, Taxonomy
RIS (EndNote, Reference Manager, ProCite, RefWorks)
BibTex (BibDesk, LaTeX)
Date
action
by
2014-01-14 11:24:59Z
created
Gil, João
2014-01-16 08:57:10Z
changed
Read, Geoffrey
2014-01-16 22:05:33Z
changed
Read, Geoffrey
2025-05-22 01:27:47Z
changed
Read, Geoffrey
2025-05-22 09:53:18Z
changed
Read, Geoffrey

Holotype ZMUB ZMBN 94016, geounit Norwegian part of the Norwegian Sea, identified as Scalibregma hanseni Bakken, Oug & Kongsrud, 2014
 Pseudoscalibregma parvum (Hansen, 1879)
  1. Functional group macrobenthos
  2. Life stage Adult
  3. [Details]


 Pseudoscalibregma parvum (Hansen, 1879)
  1. Body size (qualitative) 2.0 - 200 mm
  2. Life stage Adult
  3. [Details]


 Depth range
 for Pseudoscalibregma parvum (Hansen, 1879)

Depths from 20 to 1715 m. The shallowest records are all Arctic, from East Greenland and the Kara Sea. [details]
 Depth range
 for Scalibregma hanseni Bakken, Oug & Kongsrud, 2014

497-1243 m [details]
 Diagnosis
 for Pseudoscalibregma Ashworth, 1901

As emended (Baaken et al 2014) "Body elongate, posterior part tapering (‘arenicoliform’). Prostomium T-shaped ... [details]
 Distribution
 for Pseudoscalibregma parvum (Hansen, 1879)

East Greenland, Jan Meyen, Spitsbergen, Norwegian Sea and Kara Sea. [details]
 Distribution
 for Scalibregma hanseni Bakken, Oug & Kongsrud, 2014

Continental slope in the eastern Norwegian Sea, deep areas around Jan Mayen, and Wyville-Thomson Ridge. [details]
 Distribution
 for Scalibregma inflatum Rathke, 1843

Bakken et al (2014:110) "Scalibregma inflatum is reported from world-wide areas (Blake 1981). Most probably several ... [details]
 Etymology
 for Scalibregma hanseni Bakken, Oug & Kongsrud, 2014

The species is named after Gerhard Armauer Hansen for his contribution on polychaetes in the Norwegian Sea.  [details]
 Lectotype
 for Pseudoscalibregma parvum (Hansen, 1879)

The syntypes used by Hansen (1879) to describe the species from stations 18 and 31 from The Norwegian ... [details]
 Reproduction
 for Pseudoscalibregma parvum (Hansen, 1879)

Several ovigerous females observed in 08 January 1895 (R/V "H. Mosby" Sta. 85.01.08.1; 701 m deep; -0.9ºC; Norwegian ... [details]
 Reproduction
 for Scalibregma hanseni Bakken, Oug & Kongsrud, 2014

Ovigerous females observed in samples from continental shelf break off Nordland County at 68ºN, 765 m, October ... [details]
 Synonymy
 for Pseudoscalibregma longisetosum (Théel, 1879)

According to Bakken et al (2014) it was Støp-Bowitz (1945) who confirmed the synonymy of P. longisetosum and P. ... [details]
 Taxonomic remark
 for Scalibregmatidae Malmgren, 1867

Baaken, Oug & Kongsrud (2014) comment that: "A way to systematise morphological characters to define genera and ... [details]
 Type locality
 for Scalibregma hanseni Bakken, Oug & Kongsrud, 2014

Norwegian continental shelf break, 'Egga', west of Nordland County, 68º50.42'N, 13º05.22'E, 765 m.  [details]
 Type locality
 for Scalibregma parvum Hansen, 1879

Atlantic Ocean, Norwegian Sea, off the coast of western Norway, at 63º10'N, 04º00'E, 763 m deep.  [details]
 Type specimen
 for Scalibregma abyssorum Hansen, 1879

Baaken et al (2014) examined the only type specimen and believe "that the deposited specimen is not the one Hansen ... [details]

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