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Description |
Geographic Range [top]
Range Description: This snake has been recorded from Myanmar, Thailand, Cambodia, south-central Viet Nam, Lao PDR, and southern China (Smith 1943, Taylor 1965, Cox et al. 1998, Pauwels et al. 2003, Stuart and Emmett 2006). It may have been confused with Dryocalamus subannulatus in southern Thailand, so the exact southern limit of its distribution is unclear (T. Chan-ard pers. comm. August 2011). Records from Viet Nam include the provinces of Quang Binh, Quang Tri, Khanh Hoa, Binh Thuan, Dong Nai, Tay Ninh, Kien Giang, and from Ho Chi Minh City (Nguyen et al., 2009). There is a recent record from Hon Can ranger station, Van Xuan Commune, Thuong Xuan District, Thanh Hoa province, north Viet Nam (Orlov et al. 2011). It has been recorded between sea level and 1,500 m asl.
Countries occurrence:
Native:
Cambodia; China; Lao Peoples Democratic Republic; Myanmar; Thailand; Viet Nam
Upper elevation limit (metres): 1500
Range Map: Click here to open the map viewer and explore range.
Population [top]
Population: No population data are available for this species, although the population of this widespread snake is presumed to be stable. It is uncommon in Indochina (T. Neang and Q.T. Nguyen pers. comm. August 2011), but is reported to be common in Thailand (T. Chan-ard pers. comm. August 2011).
Current Population Trend: Stable
Additional data:
Habitat and Ecology [top]
Habitat and Ecology: This oviparous snake is semi-arboreal in disturbed and secondary forest (T. Neang and Q.T. Nguyen pers. comm. August 2011), as well as in primary evergreen forest (T. Chan-ard pers. comm. August 2011). Orlov et al. (2011) found this snake in limestone forest on a night-time excursion, and it has also been found at night in sites in southern Viet Nam (Orlov et al. 2011). It feeds on vertebrates, including small geckos (T. Chan-ard pers. comm. August 2011).
Systems: Terrestrial
Use and Trade [top]
Use and Trade: No substantial use or trade is known for this species, but it is common in the domestic pet trade in Thailand (T. Chan-ard pers. comm. August 2011).
Threats [top]
Major Threat(s): Deforestation resulting from slash and burn agriculture may threaten this arboreal species in parts of its range (Q.T. Nguyen pers. comm. August 2011). As this species is tolerant of degraded and secondary forest habitats, it is probably not heavily impacted by other forms of habitat modification.
Conservation Actions [top]
Conservation Actions: No species-specific conservation measures are in place, although it has been recorded from protected areas.
Citation: Thy, N., Nguyen, T.Q., Chan-Ard, T. & Golynsky, E. 2012. Dryocalamus davisonii. The IUCN Red List of Threatened Species 2012: e.T183193A1732700. http://dx.doi.org/10.2305/IUCN.UK.2012-1.RLTS.T183193A1732700.en. Downloaded on 02 May 2016.
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