| Kingdom | Phylum | Class | Order | Family |
|---|---|---|---|---|
| ANIMALIA | MOLLUSCA | GASTROPODA | LITTORINIMORPHA | POMATIOPSIDAE |
| Scientific Name: | Tricula mahadevensis |
| Species Authority: | Nesemann & Sharma, 2007 |
| Red List Category & Criteria: | Vulnerable D2 ver 3.1 |
| Year Published: | 2010 |
| Assessor/s: | Budha, P.B. |
| Reviewer/s: | Madhyastha, A., Dutta, J. & García, N. |
|
Justification: This species has been reported only from one location in Nepal. Human disturbance (water pollution from domestic and agricultural sources), as well as sedimentation are observed threats to the species. Although there is no detailed information on distribution, occurrence and its population trends, as its distribution appears very restricted and threats to the species have been identified, it is assessed as Vulnerable D2. Further expert survey is required to confirm the species distribution, and the species should be re-assessed if this information becomes available. |
|
| Range Description: | Tricula mahadevensis has only been recorded from the mid-hill streams of central Nepal. Specimens were collected from Mahadev Khola (forest stream) in the upper reaches of Nagarkot, Bhaktapur District (Nesemann et al. 2007), within the Kathmandu valley, Nepal. |
| Countries: |
Native:
Nepal
|
| Range Map: | Click here to open the map viewer and explore range. |
| Population: | There is no information on the population and its trends for this species. |
| Population Trend: |
Unknown
|
| Habitat and Ecology: | It is reported from unpolluted forest streams in the mid-hills (between 1,000 and 2,000 m asl) of central Nepal within the Kathmandu valley. |
| Systems: | Freshwater |
| Major Threat(s): | It is found in unpolluted forest hill streams at Nagarkot, which is one of the main tourists destinations in Nepal, located close to Kathmandu. Human disturbance due to anthropogenic activities responsible for water pollution are inferred threats to this species. |
| Conservation Actions: |
More research on life history and impacts of threats to the species is required. Habitat protection is recommended. |
| Citation: | Budha, P.B. 2010. Tricula mahadevensis. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 24 May 2012. |
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