Dipturus pullopunctatus
Taxonomy [top]
| Kingdom | Phylum | Class | Order | Family |
|---|---|---|---|---|
| ANIMALIA | CHORDATA | CHONDRICHTHYES | RAJIFORMES | RAJIDAE |
| Scientific Name: | Dipturus pullopunctatus | |||
| Species Authority: | (Smith, 1964) | |||
Common Name/s:
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| Synonym/s: |
Raja pullopunctata Smith, 1964
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Assessment Information [top]
| Red List Category & Criteria: | Least Concern ver 3.1 |
| Year Published: | 2004 |
| Assessor/s: | Smale, M.J. (SSG Subequatorial Africa Regional Workshop, September 2003) |
| Reviewer/s: | Cavanagh, R.D., Kyne, P.M. & Fowler, S.L. (Shark Red List Authority) |
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Justification: Although a large skate that probably has a slow growth rate and occurs in an area exploited by commercial boats trawling for hake, it is not caught in large quantities and its relatively wide distribution within its southern Africa range includes extensive areas of untrawlable ground. Thus the population is not considered under threat at present. However, the initiation of a longline fishery for hake that includes fishing in untrawlable grounds means that monitoring of catches is essential. In addition, more research is required to determine the life history characteristics of this species. |
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Geographic Range [top]
| Range Description: | Although the range extends from Namibia to the eastern Agulhas Bank off South Africa, this species is most commonly caught at 100 to 300 m. |
| Countries: |
Native:
South Africa (KwaZulu-Natal - Presence Uncertain)
Presence uncertain:
Namibia
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| FAO Marine Fishing Areas: |
Native:
Atlantic – southeast
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| Range Map: | Click here to open the map viewer and explore range. |
Population [top]
| Population: | Not taken in large quantities in each trawl, it appears to be scattered along the deep shelf and upper slope. |
| Population Trend: |
Stable
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Habitat and Ecology [top]
| Habitat and Ecology: | Found in deep waters from 15 to 457 m but most commonly taken from 100 to 300 m. All stages of the life history have been trawled in research trawls but the details of the biology and ecology have yet to be described. |
| Systems: | Marine |
Threats [top]
| Major Threat(s): | Deep water and hake-directed trawling and longline fishing: not caught in large quantities by hake trawlers, and extensive areas of its range are untrawlable. However, the initiation of a hake longline fishery that includes fishing in some untrawlable grounds means that monitoring of catches to determine the impacts of this fishery is essential. |
Conservation Actions [top]
| Conservation Actions: | No conservation measures are in place for this species. Further research on biology is required as is monitoring the impact of longliners and other fisheries on this species. |
Bibliography [top]
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Compagno, L.J.V., Ebert, D.A. and Cowley, P.D. 1991. Distribution of offshore demersal cartilaginous fishes (Class Chondrichthyes) of the west coast of southern Africa, with notes on their systematics. South African Journal of Marine Science 11:43-139. Hulley, P.A. 1988. Family No. 25 Rajidae. In: Smiths? Sea Fishes 1st edition. Southern Book Publishers, Johannesburg. IUCN. 2004. 2004 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 23 November 2004. IUCN SSC Shark Specialist Group. Specialist Group website. Available at: http://www.iucnssg.org/. Walmsley-Hart, S.A., Sauer, W.H.H. and Buxton, C.D. 1999. The biology of the skates Raja wallacei and R. pullopunctata (Batoidea: Rajidae) on the Agulhas Bank, South Africa. South African Journal of Marine Science 21:165-179. |
| Citation: | Smale, M.J. 2004. Dipturus pullopunctatus. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 25 May 2012. |
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