Chiloscyllium hasselti

Taxonomy

Assessment Information

Geographic Range

Population

Habitat and Ecology

Threats

Conservation Actions

Bibliography

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Taxonomy [top]

Kingdom	Phylum	Class	Order	Family
ANIMALIA	CHORDATA	CHONDRICHTHYES	ORECTOLOBIFORMES	HEMISCYLLIIDAE

Scientific Name:

Chiloscyllium hasselti

Species Authority:

Bleeker, 1852

Common Name/s:

English	–	Indonesian Bambooshark
French	–	Requin-chabot Indonésien
Spanish	–	Bamboa Indonesa

Taxonomic Notes:

The validity of this species needs to be further investigated. It is very similar to Chiloscyllium griseum and the two species are not well defined. Morphometric characters largely overlap each other and the main differences listed relate to colour of juveniles.

Assessment Information [top]

Red List Category & Criteria:	Near Threatened ver 3.1
Year Published:	2009
Assessor/s:	White, W.T.
Reviewer/s:	Stevens, J.D., Valenti, S.V. & Fowler, S.L. (Shark Red List Authority)
Contributor/s:
Justification: The Indonesian Bambooshark (Chiloscyllium hasselti) is a small, inshore, benthic shark known from Malaysia, Singapore, Myanmar, Thailand, Indonesia, Borneo and Vietnam. The reproductive and population biology of this species are poorly known. No specific data are available on catches or population trends, but it is regularly taken in fisheries throughout its range, and is likely to be threatened by population decline resulting from overfishing, destructive fishing practices and habitat modification, including the damage and destruction of coral reefs. Such threats are likely to increase in the future. As a result of these combined factors, this species is assessed as Near Threatened based on inferred continuing population declines approaching 30% in three generations (possibly ~27 years). There is a need for survey and appraisal of population trends and catch in fisheries.

Geographic Range [top]

Range Description:	Eastern Indian Ocean and western central Pacific: Malaysia, Singapore, Myanmar, Thailand, Indonesia (Sumatra, Java, between Celebes and New Guinea), Borneo (Sarawak), Viet Nam (Compagno 2001).
Countries:	Native: Brunei Darussalam; Indonesia (Jawa, Sumatera); Malaysia; Myanmar; Singapore; Thailand; Viet Nam
FAO Marine Fishing Areas:	Native: Indian Ocean – eastern; Pacific – western central
Range Map:	Click here to open the map viewer and explore range.

Population [top]

Population:	No information available. Rare in Indonesia, but more common in catches in Borneo.
Population Trend:	Unknown

Habitat and Ecology [top]

Habitat and Ecology:	Found close inshore to 12 m depth on sandy, muddy bottoms. This shark is 9?12 cm when born and grows to a maximum length of 61 cm TL (Compagno 2001). Males mature at 44?54 cm TL. Oviparous, with eggs hatching in about December (Compagno 2001).
Systems:	Marine

Threats [top]

Major Threat(s):	Taken in inshore fisheries off Singapore, Thailand, Indonesia and Borneo, and utilised for food. Likely to be threatened by overfishing, destructive fishing practices and habitat modification, including the damage and destruction of coral reefs throughout much of its range. It is one of the ten most important shark species captured in Malaysian fisheries, using trawl gear, where it is consumed locally and also exported to markets in Hong Kong and Taiwan, Province of China (SEAFDEC 2006). It is also known to be captured, consumed and marketed in Thailand (SEAFDEC 2006). The flesh is marketed fresh for human consumption.

Major Threat(s):

Taken in inshore fisheries off Singapore, Thailand, Indonesia and Borneo, and utilised for food. Likely to be threatened by overfishing, destructive fishing practices and habitat modification, including the damage and destruction of coral reefs throughout much of its range.

It is one of the ten most important shark species captured in Malaysian fisheries, using trawl gear, where it is consumed locally and also exported to markets in Hong Kong and Taiwan, Province of China (SEAFDEC 2006). It is also known to be captured, consumed and marketed in Thailand (SEAFDEC 2006). The flesh is marketed fresh for human consumption.

Conservation Actions [top]

Conservation Actions:	No conservation measures currently in place.

Conservation Actions:

No conservation measures currently in place.

Bibliography [top]

	Compagno, L.J.V. 2001. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Volume 2. Bullhead, Mackerel and Carpet Sharks (Heterodontiformes, Lamniformes and Orectolobiformes). FAO, Rome. IUCN. 2009. IUCN Red List of Threatened Species (ver. 2009.2). Available at: www.iucnredlist.org. (Accessed: 3 November 2009). SEAFDEC. 2006. Report on the Study on Shark Production, Utilization and Management in the ASEAN Region 2003-2004, plus Appendices. Southeast Asian Fisheries Development Center, Bangkok, Thailand.

Compagno, L.J.V. 2001. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Volume 2. Bullhead, Mackerel and Carpet Sharks (Heterodontiformes, Lamniformes and Orectolobiformes). FAO, Rome.

IUCN. 2009. IUCN Red List of Threatened Species (ver. 2009.2). Available at: www.iucnredlist.org. (Accessed: 3 November 2009).

SEAFDEC. 2006. Report on the Study on Shark Production, Utilization and Management in the ASEAN Region 2003-2004, plus Appendices. Southeast Asian Fisheries Development Center, Bangkok, Thailand.

Citation:	White, W.T. 2009. Chiloscyllium hasselti. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 21 May 2013.
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