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Apristurus albisoma

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Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA CHONDRICHTHYES CARCHARHINIFORMES SCYLIORHINIDAE

Scientific Name: Apristurus albisoma
Species Authority: Nakaya & Séret, 1999
Common Name(s):
English Whitish Catshark

Assessment Information [top]

Red List Category & Criteria: Near Threatened ver 3.1
Year Published: 2003
Date Assessed: 2003-04-30
Annotations:
Needs updating
Assessor(s): Fowler, S.L. (SSG Australia & Oceania Regional Workshop, March 2003)
Reviewer(s): Shark Specialist Group Australia & Oceania Regional Group, Fowler, S. & Musick, J.A. (Shark Red List Authority)
Justification:
The area of occupancy of this small benthic endemic shark is presumed very limited (less than 2,000 km²), being restricted to a narrow depth band on insular and seamount slopes. It has only been reported from a few locations. There is concern that this species may be taken as un-utilised bycatch by deepwater trawl fisheries and that, like other deepwater species, it may not be sufficiently fecund to withstand exploitation pressure in these fisheries. It fails to meet the criteria for Vulnerable (B2), however, because there is insufficient evidence of fishing activity at levels that would lead to a decline in range, habitat quality or number of individuals.

Geographic Range [top]

Range Description: Apristurus albisoma has a limited geographic range. It is endemic to the Western South Pacific, occurring on the island slopes of New Caledonia and adjacent sea mounts (Norfolk and Lord Howe ridges), at depths of 935 to 1,564 m.
Countries:
Native:
Australia (Lord Howe Is.); New Caledonia; Norfolk Island
FAO Marine Fishing Areas:
Native:
Pacific – western central
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: There is no information on population size.
Population Trend: Unknown

Habitat and Ecology [top]

Habitat and Ecology: A deepwater catshark (occurs in insular areas and seamount slopes 935 to 1,564 m) that matures at 40 to 50 cm length, reaches a maximum of 60 cm and is likely to be very susceptible to depletion to bycatch because of low intrinsic rates of population increase. The species eats penaeid shrimp and squid. It has a stocky, soft body and fragile skin, and is probably a poor swimmer with limited ability to recolonise depleted areas.
Systems: Marine

Threats [top]

Major Threat(s): Possibly a bycatch of deepwater fisheries, but of no value and would be discarded.

Conservation Actions [top]

Conservation Actions: No conservation measures in place.

Citation: Fowler, S.L. (SSG Australia & Oceania Regional Workshop, March 2003) 2003. Apristurus albisoma. The IUCN Red List of Threatened Species. Version 2014.2. <www.iucnredlist.org>. Downloaded on 18 September 2014.
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