Jasus tristani 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Arthropoda Malacostraca Decapoda Palinuridae

Scientific Name: Jasus tristani Holthuis, 1963
Common Name(s):
English Tristan Rock Lobster
Palinostus lalandii Holthuis, 1963
Palinosytus lalandii Holthuis, 1963

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2011
Date Assessed: 2009-12-03
Assessor(s): Cockcroft, A., Butler, M., MacDiarmid, A. & Wahle, R.
Reviewer(s): Collen, B., Livingstone, S. & Richman, N.
Contributor(s): Batchelor, A., De Silva, R., Dyer, E., Kasthala, G., Lutz, M.L., McGuinness, S., Milligan, H.T., Soulsby, A.-M. & Whitton, F.
Jasus tristani has been assessed as Least Concern. Although this species is commercially fished, the fishery is thought to be in a stable state, and management restrictions are in place.

Geographic Range [top]

Range Description:This species is known from the continental shelf of the Tristan da Cunha Islands (Inaccessible Is., Tristan Is., Nightingale Is., and Gough Is.) and the Vema Seamount, in the Southern Ocean (Holthuis 1991).
Countries occurrence:
Saint Helena, Ascension and Tristan da Cunha (Tristan da Cunha)
FAO Marine Fishing Areas:
Atlantic – southeast
Additional data:
Lower depth limit (metres):200
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:This species is common within its range (A. MacDiarmid and A. Cockcroft pers. comm. 2009).
Current Population Trend:Stable
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This species is found on rocky substrates, in kelp at a depth range of 0 - 200 m, although it is most commonly found between 20 - 40 m (Holthuis 1991).

Use and Trade [top]

Use and Trade: This species is commercially harvested as a food source using hoop nets and metal traps on lines (A. MacDiarmid and A. Cockcroft pers. comm. 2009).

Landings of this species have fluctuated between 300 - 500 tonnes since the 1950s (FISHSTAT Plus 2000). However, catch per unit effort (CPUE) since the 1940s is said to have declined. There is a long history of poaching within this fishery (Southern African Development Community 2008).

In 2000, it was reported that the fishery was considered stable at around 300 tonnes (Pollock et al. 2000). The Vema Seamount was short lived following heavy 'mining'; however, it is likely it will slowly re-populate in the absence of fishing pressure (A. MacDiarmid and A. Cockcroft pers. comm. 2009).

Threats [top]

Major Threat(s): This species is harvested commercially; however, this is not believed to pose a threat to this species (Pollock et al. 2000).

Conservation Actions [top]

Conservation Actions: To manage the harvesting of this species the following restrictions are in place: total allowable commercial catch for each individual catch, as well as gear restrictions, and minimum size limits (A. MacDiarmid and A. Cockcroft pers. comm. 2009).

Citation: Cockcroft, A., Butler, M., MacDiarmid, A. & Wahle, R. 2011. Jasus tristani. The IUCN Red List of Threatened Species 2011: e.T170083A6707050. . Downloaded on 23 May 2018.
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