Overview

Comprehensive Description

Biology

Found generally at depths of more than 1000 meters (Ref. 56212).
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Distribution

Range Description

Northeast Atlantic: off France, Ireland and the British Isles (Iglésias et al. 2004). Northwest Atlantic: off northern United States of America (Iglésias et al. 2004).
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© International Union for Conservation of Nature and Natural Resources

Source: IUCN

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

North Atlantic and southern Africa to Australia, New Zealand andoff New Caledonia.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© FishWise Professional

Source: FishWise Professional

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

North Atlantic: Slope, off northern U.S. and off France, Ireland and British Isles.
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Physical Description

Size

Max. size

76.1 cm TL (male/unsexed; (Ref. 56212)); 73.2 cm TL (female); max. published weight: 1,288 g (Ref. 56212); max. published weight: 1,275.0 g
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Diagnostic Description

Diagnosis: Body uniformly black, slightly brownish in larger specimens. Dermal denticles large and giving a rough texture to the skin. Upper labial furrows longer than the lower ones. First dorsal fin only slightly smaller than the second dorsal fin, originating from above anterior third to middle of the pelvic fin base. Second dorsal fin insertion just before level of anal fin insertion. Interorbital space 1.9-3.5 times eye horizontal diameter. Abdomen between pectoral fin tip and pelvic fin origin 1.3-2.5 times pectoral fin width. Spiral valves of the intestine 19-23 (mostly 21-22). Monospondylous + precaudal diplospondylous vertebrae 36-43 + 26-32 (often 38-40 + 28-30). Dermal denticles on tongue and palate absent (Ref. 56212).
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
Occurs on the slope at 512–1,520m but generally deeper than 1,000 m (Iglésias et al. 2004). Maximum recorded size is 76.1 cm total length (TL) (Iglésias et al. 2004). Size at maturity appeared to be smaller in females than males (whereas it is generally the opposite for sharks), however the species is known from relatively few specimens and more investigation is required to confirm the size at maturity (Iglésias et al. 2004). Reproduction is presumably oviparous, like other Apristurus species, but very little is known of the biology.

Systems
  • Marine
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© International Union for Conservation of Nature and Natural Resources

Source: IUCN

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Environment

bathypelagic; marine; depth range 512 - 1520 m (Ref. 56212)
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Apristurus melanoasper

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 22
Species With Barcodes: 1
Creative Commons Attribution 3.0 (CC BY 3.0)

© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
DD
Data Deficient

Red List Criteria

Version
3.1

Year Assessed
2009

Assessor/s
McCormack C. & Iglésias, S.

Reviewer/s
Valenti, S.V. & Stehmann, M.F.W. (Shark Red List Authority)

Contributor/s

Justification
The Black Roughscale Catshark (Apristurus melanoasper) is a recently described deepwater catshark, found on the slope of the north Atlantic Ocean at 512-1,520 m but generally deeper than 1,000 m. It is reported from off France, Ireland, the British Isles and northern USA. The maximum recorded size for this species is 76.1 cm total length but virtually nothing is known of its biology. The Black Roughscale Catshark is an uncommon bycatch of commercial deepwater trawlers. Although its relatively wide depth range may afford the species some refuge from fishing pressure, there is a continuing trend for deepwater fishing activities in the northeast Atlantic. This is a poorly known species and it cannot be assessed beyond Data Deficient without further information on catch levels and population trends.

History
  • 2003
    Data Deficient
    (IUCN 2003)
  • 2003
    Data Deficient
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© International Union for Conservation of Nature and Natural Resources

Source: IUCN

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Population

Population
A recently described species, known from 53 specimens.

Population Trend
Unknown
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© International Union for Conservation of Nature and Natural Resources

Source: IUCN

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Threats

Major Threats
An uncommon bycatch of commercial deepwater trawlers (S. Iglésias pers. comm. 2007). Areas of the northeast Atlantic, for example the Rockall Trough, have been subject to a fairly rapid increase in deepwater fishing activities since the 1990s with overall concern for the sustainability of deepwater fish stocks (Gordon 2003). This species appears to be more abundant on the Rockall Bank, where fewer boats operate, than on the continental slope where the Flathead Catshark (Apristurus laurussonii) is more abundant (S. Iglésias pers. comm. 2007).The species is generally recorded deeper than 1,000 m and the depth range may extend deeper than currently known, offering some refuge from fishing pressure. Despite this, it is still poorly known and may share the limiting life-history characteristics of other deepwater sharks making it vulnerable to depletion. Therefore any expansion in deepwater fishing effort could negatively impact this species. Further information is required on deepwater fishing activities (including catch and bycatch levels, effort and trend monitoring) in the North Atlantic and the threat status of this species should be reassessed when such information is available. However, there is a continuing trend of increasing deepwater fishing activities in the northeast Atlantic .
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© International Union for Conservation of Nature and Natural Resources

Source: IUCN

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Data deficient (DD)
  • IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Management

Conservation Actions

Conservation Actions
Where taken, catches require monitoring, particularly as deepwater fisheries expand worldwide. The development and implementation of management plans (national and/or regional e.g., under the FAO International Plan of Action for the Conservation and Management of Sharks: IPOA-Sharks) are required to facilitate the conservation and management of all chondrichthyan species in the region.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© International Union for Conservation of Nature and Natural Resources

Source: IUCN

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Wikipedia

Black roughscale catshark

The black roughscale catshark, Apristurus melanoasper, is a catshark of the family Scyliorhinidae, found at the northwest Atlantic continental shelf at depths between 510 and 1,520 m. It can grow up to 76 cm (30 in).[2]

References[edit]

  1. ^ C. McCormack & S. Iglésias (2007). "Apristurus melanoasper". IUCN Red List of Threatened Species. Version 2009.2. International Union for Conservation of Nature. Retrieved February 2, 2010. 
  2. ^ Froese, Rainer and Pauly, Daniel, eds. (2006). "Apristurus melanoasper" in FishBase. July 2006 version.
Creative Commons Attribution Share Alike 3.0 (CC BY-SA 3.0)

Source: Wikipedia

Unreviewed

Article rating from 0 people

Default rating: 2.5 of 5

Disclaimer

EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!