Overview

Comprehensive Description

Biology

Oviparous (Ref. 50449).
  • Meng, Q., Y. Chu and S. Li 1986 Description of four new species of the genus Apristurus (Scyliorhinidae) from deep waters of the South China Sea. Oceanol. Limnol. Sin. 17(4):274-275. (Ref. 13120)
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Distribution

Range Description

The species is known only from the holotype collected from the South China Sea.
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Northwest Pacific: South China Sea. Presence in the Western Central Pacific is uncertain (Ref. 11146).
  • Meng, Q., Y. Chu and S. Li 1986 Description of four new species of the genus Apristurus (Scyliorhinidae) from deep waters of the South China Sea. Oceanol. Limnol. Sin. 17(4):274-275. (Ref. 13120)
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Western North Pacific.
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Physical Description

Size

Maximum size: 372 mm TL
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Max. size

37.2 cm TL (male/unsexed; (Ref. 13120))
  • Meng, Q., Y. Chu and S. Li 1986 Description of four new species of the genus Apristurus (Scyliorhinidae) from deep waters of the South China Sea. Oceanol. Limnol. Sin. 17(4):274-275. (Ref. 13120)
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
The holotype is an adolescent male, 37.2 cm TL, caught at 913 m depth. Nakaya and Sato (2000) estimated male size at maturity to be about 40 cm TL, and maximum size to be about 57 cm TL.

Apristurus species are relatively small, sluggish sharks that live on or near the bottom over upper to mid continental and insular slopes. Diet includes crustaceans (penaeid shrimps, euphausids), squids and small fishes. Where known reproduction is oviparous with one egg per oviduct. Egg cases are usually thick-walled, about 5 to 6.8 cm long and 2.5 to 2.9 cm wide. The anterior end of the case has a long weak fibrous thread on each corner. The posterior end usually has two small processes, each with a long coiled tendril. As in shallow water scyliorhinids the coiled tendrils are probably used to attach the egg cases to hard substrates and/or biogenic structures as they are laid.

Systems
  • Marine
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Environment

bathydemersal; marine; depth range ? - 913 m (Ref. 13120)
  • Meng, Q., Y. Chu and S. Li 1986 Description of four new species of the genus Apristurus (Scyliorhinidae) from deep waters of the South China Sea. Oceanol. Limnol. Sin. 17(4):274-275. (Ref. 13120)
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Depth: 0 - 913m.
Recorded at 913 meters.

Habitat: bathydemersal.
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Life History and Behavior

Life Cycle

Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449).
  • Breder, C.M. and D.E. Rosen 1966 Modes of reproduction in fishes. T.F.H. Publications, Neptune City, New Jersey. 941 p. (Ref. 205)
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
DD
Data Deficient

Red List Criteria

Version
3.1

Year Assessed
2004

Assessor/s
Duffy, C. & Huveneers, C.

Reviewer/s
Kyne, P.M., Cavanagh, R.D. & Fowler, S.L. (Shark Red List Authority)

Contributor/s

Justification
A deepwater catshark known only from one 37.2 cm total length (TL) juvenile or adolescent male caught in the South China Sea at a depth of 913 m. Probably taken as bycatch in deepwater trawl fisheries. Insufficient information is available to assess the species beyond Data Deficient.
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Population

Population
Only known from the holotype.

Population Trend
Unknown
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Threats

Major Threats
Probably taken as bycatch in deepwater trawl fisheries. Other species of deepwater Chondrichthyans are known to be captured as bycatch in deepwater fisheries. As these fisheries expand globally, consideration needs to be given to the fact that this species too may be captured incidentally in deepwater fisheries.
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Data deficient (DD)
  • IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.
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Management

Conservation Actions

Conservation Actions
No conservation measures are currently in place for this species.
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Wikipedia

Smalldorsal catshark

The smalldorsal cat shark, Apristurus micropterygeus, is a catshark of the family Scyliorhinidae found in the South China Sea, at depths to 915 m. It can grow up to 37 cm. A. micropterygeus is unique among its species in having a narrow and sharply pointed first dorsal fin. However, Nakaya and Sato (2000)[citation needed] recommended that the status of the species be reviewed once additional specimens are available, citing the possibility that the dorsal fin of the holotype may have been malformed. The reproduction of the smalldorsal catshark is oviparous.

See also[edit]

References[edit]

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