Gollum attenuatus

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	CARCHARHINIFORMES	PSEUDOTRIAKIDAE

Scientific Name:

Gollum attenuatus

Species Authority:

(Garrick 1954)

Common Name/s:

English

–

Slender Smoothhound

Taxonomic Notes:

This species has been reported from New Caledonia in an unpublished checklist of fishes. However, the specimens from there represent an undescribed species of Gollum. A second undescribed species occurs at the Philippines (L.J.V. Compagno pers. comm.).

Assessment Information [top]

Red List Category & Criteria:	Least Concern ver 3.1
Year Published:	2003
Assessor/s:	Francis, M.P. (SSG Australia & Oceania Regional Workshop, March 2003)
Reviewer/s:	Fowler, S., Kyne, P.M. & Cavanagh, R.D. (Shark Red List Authority)
Justification: Gollum attenuatus is endemic to New Zealand and adjacent oceanic ridges, and taken as bycatch in bottom trawl fisheries. Fecundity is extremely low (two pups/litter), but there is no information on population size or status. However, large parts of the species? range (Norfolk and Three Kings Ridges) are outside the fished areas, suggesting that there is a relatively unfished reservoir. Should these areas become fished in future, the status could move quickly towards a threatened category.

Geographic Range [top]

Range Description:	New Zealand and ridges to the north (Norfolk Ridge, Three Kings Ridge). Depth range 129 to 724 m, with greatest abundance in 300 to 600 m.
Countries:	Native: New Zealand
FAO Marine Fishing Areas:	Native: Pacific – southwest
Range Map:	Click here to open the map viewer and explore range.

Population [top]

Population Trend:	Unknown

Population Trend:

Unknown

Habitat and Ecology [top]

Habitat and Ecology:	Found on flat plateaux to steep slopes on the upper to mid continental slope. Trawled over open, soft seabed, but may also occur over rocky habitats. Food is varied including sharks, teleosts, gastropods, squid, crustaceans and brittle stars. Length at maturity of both sexes is 70 cm total length (TL), and maximum length of 110 cm TL. Litter size is usually two embryos, which are born at about 40 cm TL.
Systems:	Marine

Habitat and Ecology:

Found on flat plateaux to steep slopes on the upper to mid continental slope. Trawled over open, soft seabed, but may also occur over rocky habitats. Food is varied including sharks, teleosts, gastropods, squid, crustaceans and brittle stars. Length at maturity of both sexes is 70 cm total length (TL), and maximum length of 110 cm TL. Litter size is usually two embryos, which are born at about 40 cm TL.

Systems:

Marine

Threats [top]

Major Threat(s):	Caught as bycatch by bottom trawlers and bottom longliners in New Zealand waters. Fishing effort on the ridges north of New Zealand is probably low, and catches therefore minimal.

Major Threat(s):

Caught as bycatch by bottom trawlers and bottom longliners in New Zealand waters. Fishing effort on the ridges north of New Zealand is probably low, and catches therefore minimal.

Conservation Actions [top]

Conservation Actions:	There are currently no conservation measures in place for this species.

Conservation Actions:

There are currently no conservation measures in place for this species.

Bibliography [top]

	Anderson, O.F., Bagley, N.W., Hurst, R.J., Francis, M.P., Clark, M.R. and McMillan, P.J. 1998. Atlas of New Zealand fish and squid distributions from research bottom trawls. NIWA Technical Report 42. NIWA, Wellington. 303 pp. Compagno, L.J.V. 1984. FAO species catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. FAO Fish. Synop. No. 125, vol. 4. Compagno, L.J.V. and Niem, V.H. 1998. Proscylliidae. In: K.E. Carpenter and V.H.Niem (eds). FAO species identification guide for fishery purposes. The living marine resources of the western central Pacific. Vol 2. Cephalopods, crustaceans, holothurians and sharks. FAO, Rome. Cox, G. and Francis, M. 1997. Sharks and rays of New Zealand. Canterbury University Press, Christchurch. IUCN. 2003. 2003 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 18 November 2003. IUCN SSC Shark Specialist Group. Specialist Group website. Available at: http://www.iucnssg.org/. Yano, K. 1993a Reproductive biology of the slender smoothhound, Gollum attenuatus, collected from New Zealand waters. Environmental Biology of Fishes 38: 59-71. Yano, K. 1993b. Distribution and food habits of the slender smoothhound, Gollum attenuatus, from the waters around New Zealand. Japanese Journal of Ichthyology 39: 345-356.

Anderson, O.F., Bagley, N.W., Hurst, R.J., Francis, M.P., Clark, M.R. and McMillan, P.J. 1998. Atlas of New Zealand fish and squid distributions from research bottom trawls. NIWA Technical Report 42. NIWA, Wellington. 303 pp.

Compagno, L.J.V. 1984. FAO species catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. FAO Fish. Synop. No. 125, vol. 4.

Compagno, L.J.V. and Niem, V.H. 1998. Proscylliidae. In: K.E. Carpenter and V.H.Niem (eds). FAO species identification guide for fishery purposes. The living marine resources of the western central Pacific. Vol 2. Cephalopods, crustaceans, holothurians and sharks. FAO, Rome.

Cox, G. and Francis, M. 1997. Sharks and rays of New Zealand. Canterbury University Press, Christchurch.

IUCN. 2003. 2003 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 18 November 2003.

IUCN SSC Shark Specialist Group. Specialist Group website. Available at: http://www.iucnssg.org/.

Yano, K. 1993a Reproductive biology of the slender smoothhound, Gollum attenuatus, collected from New Zealand waters. Environmental Biology of Fishes 38: 59-71.

Yano, K. 1993b. Distribution and food habits of the slender smoothhound, Gollum attenuatus, from the waters around New Zealand. Japanese Journal of Ichthyology 39: 345-356.

Citation:	Francis, M.P. 2003. Gollum attenuatus. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 22 May 2012.
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