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Description |
Geographic Range [top]
Range Description: It is distributed in Cao Bang and Lang Son provinces in northeast Viet Nam where Bang river and Ky Cung river are the most important sites for the species.
Countries occurrence:
Native:
Viet Nam
Additional data:
? Number of Locations: 2
Range Map: Click here to open the map viewer and explore range.
Population [top]
Population: Before 1975, this species was quite common in Bang River, Cao Bang province and Ky Cung River, Lang Son province. Since 1975 and especially since 1990 up to the present, the population of this species has massively declined. In 2000-2001 and 2007-2010, surveys could not find any live specimen of this species (V. Do pers. comm. 2011). It is estimated that the population has suffered at least a 50% decline in the last 30 years.
Current Population Trend: Decreasing
Additional data:
Habitat and Ecology [top]
Habitat and Ecology: This species inhabits streams and rivers in midlands and mountains.
Systems: Freshwater
Generation Length (years): 10
Use and Trade [top]
Use and Trade: This species is used as a food source for local people, poultry, livestock and fish.
Threats [top]
Major Threat(s): Overexploitaiton, deforestation and mining are the main threats to the survival of this species.
Conservation Actions [top]
Conservation Actions: Surveys need to be conducted in Bang and Ky Cung rivers in northeastern Viet Nam to obtain information on the population, distribution and ecological requirements of this species. To conserve this species, it needs to be protected from exploitation and its important habitats should be protected from direct and indirect impacts.
Citation: Do, V. 2011. Protunio messageri. The IUCN Red List of Threatened Species 2011: e.T171878A6808854. http://dx.doi.org/10.2305/IUCN.UK.2011-1.RLTS.T171878A6808854.en. Downloaded on 07 May 2018.
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