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Narcine brevilabiata

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Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA CHONDRICHTHYES RAJIFORMES NARCINIDAE

Scientific Name: Narcine brevilabiata
Species Authority: Bessednov, 1966
Common Name/s:
English – Shortlip Electric Ray

Assessment Information [top]

Red List Category & Criteria: Vulnerable A2bd+3bd+4bd ver 3.1
Year Published: 2006
Assessor/s: de Carvalho, M.R. & McCord, M.E.
Reviewer/s: Fowler, S.L., Kyne, P.M., Valenti, S.V., Heenan, A. & participants of the Shark Specialist Group Expert Panel workshop 2005 (Shark Red List Authority)
Contributor/s:
Justification:
N. brevilabiata is captured as bycatch in continental shelf areas of parts of the Northwest Pacific where there is intense shrimp trawling (China, Vietnam). Pollution may affect the habitat of N. brevilabiata as it is found in relatively shallow waters. It is probably a poor swimmer (exhibits low vagility) and is easily caught as bycatch. Fisheries pressure throughout its distribution is unlikely to be reduced in the future. Despite the poor information available for this electric ray, based on the precautionary approach, it is assessed as Vulnerable, given that it?s distribution coincides with that of intensive shrimp trawling activity.

Geographic Range [top]

Countries:
Native:
China; Malaysia; Thailand; Viet Nam
FAO Marine Fishing Areas:
Native:
Pacific – northeast; Pacific – northwest
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: No information is available.
Population Trend: Unknown

Habitat and Ecology [top]

Habitat and Ecology: N. brevilabiata is found in depths ranging from 41 to 70 m in offshore continental shelf waters.

Male size at maturity appears to vary with locality. A male from the Gulf of Thailand possessed firm claspers at 23 cm TL while a male from Viet Nam possessed proportionally longer flexible claspers at 25.7 mm TL. smaller size at maturity. Female size at maturity is not known (Carvalho 1999a).
Systems: Marine

Threats [top]

Major Threat(s): Intense fishing pressure occurs throughout its distribution, where it is taken in large numbers by shrimp trawling vessels.

Conservation Actions [top]

Conservation Actions: Improved monitoring of bycatch and other fishery impacts are required in order to develop appropriate conservation and management strategies for this species.

Further research is one of the most pressing issues with regard to this species, in order to learn more about this species? biology and quantify the contribution of this species to shrimp bycatch.

Bibliography [top]

De Carvalho, M.R. 1999. A systematic revision of the electric ray genus Narcine Henle, 1834 (Chondrichthyes: Torpediniformes: Narcinidae), and the higher-level phylogenetic relationships of the orders of elasmobranch fishes (Chondrichthyes). The City University of New York, New York

IUCN. 2006. 2006 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 04 May 2006.

IUCN SSC Shark Specialist Group. Specialist Group website. Available at: http://www.iucnssg.org/.
Citation: de Carvalho, M.R. & McCord, M.E. 2006. Narcine brevilabiata. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 21 May 2013.
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