Overview

Comprehensive Description

Biology

Occurs in muddy bottoms. Eggs taken from a damaged specimen in various stages of maturation , elliptical up to 23.6 X 8.5 mm; all eggs are in mesenteries and no anchor filaments were found (Ref. 54824).
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Distribution

Range Description

This species is known from the North Atlantic, eastern Davis Strait, Denmark Strait, Reykjanes Ridge, and southeast of Iceland. The disjunctive distribution is a result of a very limited sampling effort in the waters around southern Greenland (Møller et al. 2005).

It occurs sympatrically with Myxine glutinosa, although with a rather limited overlap in vertical distribution (752-1556 vs. 64-782 m) and no documented capture of both species in the same haul or trap exists.
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North Atlantic.
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North Atlantic: off West Greenland, in the eastern Davis Strait. Denmark Strait, Reykjanes Ridge, and South East of Iceland. Occurs sympatrically with Myxine glutinosa, although with a rather limited overlap in vertical distribution (772-1556 vs. 64-782) and no documented capture of both species in the same haul or trap exists.
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Physical Description

Size

Max. size

49.8 cm TL (male/unsexed; (Ref. 54824))
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Diagnostic Description

Diagnosis: Color grayish brown with whitish head, the white extending posteriorly in a mid-ventral stripe of varying length; surrounding slime pores, PCD, gill aperture, cloaca, CFF, and VFF margins whitish. Two paired, pointed, or comb-shaped, bilaterally symmetrical nasal-sinus papillae with 2-5 distal fringes and 2 cusps in each row fused at their bases. Additional cusps in anterior rows 7-9 and posterior rows 8-10; total cusps 38-44. Pairs of gill pouches 6. Slime pores: prebranchial 28-37; trunk 65-74; tail 11-15; total 107-121. Body slender, depth over cloaca 2.9-4.3% TL; ventral finfold originates within anterior 10% of trunk; caudal finfold termination dorsally above cloaca to posterior 7% of trunk (Ref. 54824).
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This species is usually taken from muddy bottoms and cold waters (3.7-4.7°C) on the lower slope at depths from 752-1,556 m. According to Møller et al. (2005), the eggs of a single damaged female were in various stages of maturation, elliptical, up to 23.6 x 8.5 mm. All eggs were in mesenteries and no anchor filaments were found (Moller et al. 2005).

Systems
  • Marine
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Environment

benthopelagic; marine; depth range 752 - 1556 m (Ref. 54824)
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2011

Assessor/s
Mincarone, M.M.

Reviewer/s
Polidoro, B., Knapp, L. & Carpenter, K.E.

Contributor/s

Justification
This species is only known from a few deep water specimens taken in the North Atlantic. There are no known threats to this species. However, may be caught in bottom trawling fisheries within its range. It is listed as Least Concern. More research is needed on this species distribution, population, biology, life history, and potential threats, especially as there are few records to understand its distribution and the species was only described in 2005. It has likely been previously mistaken for Myxine glutinosa in bycatch and scientific survey records.
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Population

Population
This population is only known from a few type specimens collected at 17 locations.

Population Trend
Unknown
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Threats

Major Threats
There are no known direct threats to this deep water species. There are deep water fisheries active within the currently known distribution range but no records are being reporting from by-catch incidences. This is likely due to this species being lumped with Myxine glutinosa as by-catch since the species was only described in 2005.
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Least Concern (LC)
  • IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.
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Management

Conservation Actions

Conservation Actions
There are no conservation measures in place, but more research is needed on this species' biology, population size, distribution and impact of deep-water trawling activities.
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