|Scientific Name:||Dasyatis navarrae|
|Species Authority:||(Steindachner, 1892)|
|Red List Category & Criteria:||Data Deficient ver 3.1|
|Assessor/s:||Wang, Y., Ebert, D. & Samiengo, B. and Vidthayanon, C.|
|Reviewer/s:||Valenti, S.V. & Fowler, S.L. (Shark Red List Authority)|
The Blackfish Stingray (Dasyatis navarrae is an inshore stingray, occurring from southern Taiwan, Province of China to the Yellow Sea, northern China. Very little information is available on this species? habitat and biology, but males are reportedly mature at 38 cm disc width. Inshore trawl fisheries are often intense within this species? range. It is taken as a utilized bycatch and is one of three most commonly marketed stingrays in China. However, the species is still poorly known and no data are available to determine catch levels. It is assessed as Data Deficient at present and efforts should be made to quantify catch levels and monitor population trends to enable re-assessment.
|Range Description:||Northwest Pacific: Yellow Sea, East China Sea, Bohai Sea to northern China and off Taiwan, Province of China (Nishida and Nakaya 1990). Taiwan, Province of China is the southern extent of the range.|
Native:China (Beijing, Fujian, Jiangsu, Liaoning, Shandong, Shanghai, Zhejiang); Taiwan, Province of China (Taiwan, Province of China (main island))
|FAO Marine Fishing Areas:||
Pacific – northwest
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||Difficulties with species identification among Dasyatids makes it very difficult to determine population trends. This is a cold water species, so is perhaps more common in the Yellow Sea than Taiwan, Province of China (D. Ebert and Y. Wang pers. obs.).|
|Habitat and Ecology:||Primarily an inshore species, but no specific information is available on the depth range. Adult males measured 38 cm disc width (DW) (based on the holotype), 60?94 cm total length (TL) (Zhu and Meng 2001). Very little is known of the habitat and biology of this species.|
Taken as bycatch by trawl fisheries, including shrimp trawls operating on the continental shelf (D. Ebert pers. obs. 2007). Habitat destruction through industrialization may also be impacting shallow water species such as this off China and Taiwan Island (D. Ebert, C. Vidthaynon pers. obs.).
Commonly captured as bycatch in demersal trawls operating off China (Zhu and Meng 2001), but only of low value. One of three most commonly marketed of dasyatids in China, although no information is available on trends. There are difficulties with accurate identification of Dasyatid species.
|Conservation Actions:||No conservation measures in place.|
|Citation:||Wang, Y., Ebert, D. & Samiengo, B. and Vidthayanon, C. 2009. Dasyatis navarrae. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.2. <www.iucnredlist.org>. Downloaded on 13 December 2013.|
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