Bythaelurus lutarius
Taxonomy [top]
| Kingdom | Phylum | Class | Order | Family |
|---|---|---|---|---|
| ANIMALIA | CHORDATA | CHONDRICHTHYES | CARCHARHINIFORMES | SCYLIORHINIDAE |
| Scientific Name: | Bythaelurus lutarius | |||||||||
| Species Authority: | (Springer & D'Aubrey, 1972) | |||||||||
Common Name/s:
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| Synonym/s: |
Halaelurus lutarius Springer & D'Aubrey, 1972
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Assessment Information [top]
| Red List Category & Criteria: | Data Deficient ver 3.1 |
| Year Published: | 2004 |
| Assessor/s: | Robinson, L. |
| Reviewer/s: | Human, B., Cavanagh, R.D., Kyne, P.M. & Fowler, S.L. (Shark Red List Authority) |
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Justification: Bythaelurus lutarius is a deepwater catshark endemic to East Africa, apparently patchily distributed from Somalia and Mozambique. It may be taken as bycatch, although its depth range (338 to 766 m) and small size does not make it susceptible to significant fisheries pressure. There are no population estimates and life history data are limited, although it has a potential low fecundity. Further information is required and the situation should be re-assessed as deepwater fisheries expand in the region. |
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Geographic Range [top]
| Range Description: | Western Indian Ocean: Mozambique and Somalia. |
| Countries: |
Native:
Mozambique; Somalia
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| FAO Marine Fishing Areas: |
Native:
Indian Ocean – western
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| Range Map: | Click here to open the map viewer and explore range. |
Population [top]
| Population Trend: |
Unknown
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Habitat and Ecology [top]
| Habitat and Ecology: |
A deepwater tropical catshark of the continental slope occurring on or just above bottom on mud substrates at 338 to 766 m (Compagno et al. 1989). Apparently ovoviviparous. Matures at 31 to 34 cm TL (male) and 31 to 39 cm TL (female), size at birth 10 cm TL. Feeds on cephalopods, small bony fishes and crustaceans (Bass et al. 1975). |
| Systems: | Marine |
Threats [top]
| Major Threat(s): | May be taken as bycatch in trawl fisheries. No details available, but due to its depth range, it is likely to be caught on an irregular basis. The situation should be re-assessed as deepwater fisheries expand in the region. |
Bibliography [top]
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Bass, A.J., D?Aubery, J.D. and Kistnasamy, N. 1975. Sharks of the east coast of southern Africa. II. The families Scyliorhinidae and Pseudotriakidae. South African Association for Marine Biological Research, Oceanographic Research Institute Investigational Report No. 37. Compagno, L.J.V., Ebert, D.A. and Smale, M.J. 1989. Guide to the sharks and rays of Southern Africa. Struik, Cape Town. 160 pp. 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/. |
| Citation: | Robinson, L. 2004. Bythaelurus lutarius. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 25 May 2012. |
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