Overview

Comprehensive Description

Biology

Sexual maturity attained between 40 and 50 cm TL (Ref. 36058). Oviparous (Ref. 50449).
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

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.
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

Southwestern Pacific.
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

Western Pacific: southern waters off New Caledonia, slopes of the seamounts of the Norfolk and Lord Howe ridges.
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

59.6 cm TL (male/unsexed; (Ref. 36058)); 56.6 cm TL (female)
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

Body whitish. Eyes small; interobital region 2.7 - 3.6 times eye diameter. Supraorbital sensory canal continuous. Second dorsal fin axil before anal fin axil. Upper labial furrows equal or shorter than lower furrows. Tricuspid dermal denticles overlapping. Spiral valves 6-10.
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
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
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

bathydemersal; marine; depth range 935 - 1564 m (Ref. 36058)
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

Depth range based on 29 specimens in 1 taxon.
Water temperature and chemistry ranges based on 29 samples.

Environmental ranges
  Depth range (m): 974 - 1440
  Temperature range (°C): 3.229 - 4.745
  Nitrate (umol/L): 29.953 - 35.373
  Salinity (PPS): 34.453 - 34.550
  Oxygen (ml/l): 3.574 - 4.205
  Phosphate (umol/l): 2.161 - 2.402
  Silicate (umol/l): 42.823 - 83.287

Graphical representation

Depth range (m): 974 - 1440

Temperature range (°C): 3.229 - 4.745

Nitrate (umol/L): 29.953 - 35.373

Salinity (PPS): 34.453 - 34.550

Oxygen (ml/l): 3.574 - 4.205

Phosphate (umol/l): 2.161 - 2.402

Silicate (umol/l): 42.823 - 83.287
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Trophic Strategy

Some stomachs with penaeid shrimps (Gennadas) and one with a squid beak (Ref. 36058).
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

Life History and Behavior

Life Cycle

Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449).
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 albisoma

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 2
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
NT
Near Threatened

Red List Criteria

Version
3.1

Year Assessed
2003

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)

Contributor/s

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.
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
There is no information on population size.

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
Possibly a bycatch of deepwater fisheries, but of no value and would be discarded.
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

Near Threatened (NT)
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
No conservation measures in place.
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

Apristurus albisoma

Apristurus albisoma, the whitish catshark, is a catshark of the family Scyliorhinidae. 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.

See also[edit]

References[edit]

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!