Apristurus investigatoris — Details

Broadnose Catshark learn more about names for this taxon

Overview

Comprehensive Description

Biology

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Known only from the holotype. Maximum length presumably comes from an immature specimen. Oviparous (Ref. 50449). Not utilized at present.
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Distribution

Range Description

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A. investigatoris is only known from the holotype, an immature 24.2cm TL female caught at 1,040 m depth in the Andaman Sea (11°46'N, 93°10'E).
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Eastern Indian Ocean: known only from the type locality, the Andaman Sea. Reported from India (Ref. 45255).
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Physical Description

Size

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Maximum size: 260 mm TL
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Max. size

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26.0 cm TL (male/unsexed; (Ref. 244))
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Ecology

Habitat

Habitat and Ecology

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Habitat and Ecology
Apristurus species are relatively small, sluggish sharks that live on or near the bottom over continental and insular slopes. Diet includes crustaceans (penaeid shrimps, euphausiids), squids and small fishes. Where known reproduction is oviparous with one egg per oviduct. Egg cases are thick, and 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 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

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bathydemersal; marine; depth range 1040 - 1041 m (Ref. 58018)
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Life History and Behavior

Life Cycle

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

Conservation Status

IUCN Red List Assessment

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Red List Category
DD
Data Deficient

Red List Criteria

Version
3.1

Year Assessed
2004

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

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

Contributor/s

Justification
Known only from the holotype, a 24.2 cm total length (TL) immature female caught in the Andaman Sea (11°46'N, 93°10'E) at a depth of 1,040 m. Possibly taken in deepwater trawl fisheries but not identified. Insufficient information is available to assess the species beyond Data Deficient.
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Population

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Population Trend
Unknown
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Threats

Threats

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Major Threats
Unknown. Possibly taken in deepwater trawl fisheries but not identified. 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)
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Management

Conservation Actions

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Conservation Actions
No conservation measures are in place for this species.
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Relevance to Humans and Ecosystems

Benefits

Importance

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fisheries: of no interest
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Wikipedia

Broadnose catshark

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The broadnose catshark, Apristurus investigatoris, is a cat shark of the family Scyliorhinidae the holotype and only specimen being found in deepwater in the Andaman Sea in the Indian Ocean between latitudes 16° N and 10° N. Its length is 26 cm, although this is an immature specimen.

Reproduction is oviparous.

References


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