Thymops birsteini 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Arthropoda Malacostraca Decapoda Nephropidae

Scientific Name: Thymops birsteini (Zarenkov & Semenov, 1872)
Common Name(s):
English Patagonian Lobsterette
Spanish Langosta Oceánica
Nephropides birsteini Zarenkov & Semenov, 1972

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2011
Date Assessed: 2009-12-03
Assessor(s): 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.
Thymops birsteini has been listed as Least Concern because of its large distribution.  Despite this species being caught as by-catch in parts of its range, this does not appear to be causing a fast enough rate of population decline to warrant a threat category.  Further research on this species' population should be conducted to ascertain whether harvesting will have a significant impact.

Geographic Range [top]

Range Description:This species inhabits the waters off southern South America and the Scotia Sea (Holthuis 1991). Specifically it is found off the continental shelf, between 37º and 57ºS and 35º and 76ºW (Holthuis 1991). This includes Argentina to Chile, out to the areas north, east and southeast of the Falkland Islands and the east of South Georgia (Holthuis 1991).
Countries occurrence:
Argentina (Chubut, Rio Negro, Santa Cruz, Tierra del Fuego); Chile (Aisén, Magellanes); Falkland Islands (Malvinas); South Georgia and the South Sandwich Islands (South Georgia)
FAO Marine Fishing Areas:
Atlantic – southwest; Atlantic – Antarctic; Pacific – southeast
Additional data:
Lower depth limit (metres):2516
Upper depth limit (metres):122
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:This species is described as common in the deep waters of the Patagonia region and the Falkland Islands (Malvinas) (Boschi 1979).
Current Population Trend:Unknown
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This species can be found at depths between 122 and 2516 metres, but is more likely to be found between 122 and 900 metres (Holthuis 1991, Laptikhovsky 2009).

Use and Trade [top]

Use and Trade: This species is not found in large enough concentrations to make harvesting commercially viable (Holthuis 1991). Analysis of deep sea trawling fish nets and pots described this species as 'common but not abundant' (Laptikhovsky 2009).

Threats [top]

Major Threat(s):

It is unlikely that any major threat is impacting this species.

Conservation Actions [top]

Conservation Actions:

There are no conservation measures in place for this species.  Further research into the levels which this species is caught as by-catch is suggested as these data are lacking.  

Citation: Wahle, R. 2011. Thymops birsteini. The IUCN Red List of Threatened Species 2011: e.T170038A6717105. . Downloaded on 20 March 2018.
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