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Dryocalamus philippinus 

Scope: Global
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Reptilia Squamata Colubridae

Scientific Name: Dryocalamus philippinus Griffin, 1909

Assessment Information [top]

Red List Category & Criteria: Vulnerable A4c ver 3.1
Year Published: 2009
Date Assessed: 2007-04-22
Annotations:
Needs updating
Assessor(s): Brown, R., Gonzalez, J.C. & Afuang, L.
Reviewer(s): Cox, N. & Hoffmann, M. (Global Reptile Assessment Coordinating Team)
Justification:
Listed as Vulnerable because it is suspected that a drastic population decline over the past 60 years or so, and this decline is likely to be continuing due to habitat loss. It was formerly common in collections, but is now rarely encountered. Further population studies are urgently needed on this species to better determine the rate of current decline.

Geographic Range [top]

Range Description:This species is endemic to the Philippines, where it has been recorded from many islands. Although there are numerous old records of this species, it has been rarely detected during recent surveys, with the only recent collections being from Marinduque Island, Panay Island (at 200 m asl), and the mountains of northern Luzon (at about 500 m asl).
Countries occurrence:
Native:
Philippines
Additional data:
Upper elevation limit (metres):500
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:While there is little population information available for this species, it appears to have declined significantly since the 1940s.
Current Population Trend:Decreasing
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This is an arboreal snake that may be restricted to lowland tropical moist forest. Additional studies into the natural history of this species are needed to confirm this.
Systems:Terrestrial

Threats [top]

Major Threat(s): The species is seriously threatened by the ongoing loss of lowland forest within the Philippines, principally through conversion of land to agricultural use (including slash and burn 'kaingin' agriculture), extraction of timber, conversion of land to plantations, and mining activities.

Conservation Actions [top]

Conservation Actions: It is not known if this snake is present within any protected areas. There is a need to protect remaining areas of suitable forest habitat. Additional surveys are urgently needed to locate viable populations of this species, and to learn more about the species ecological needs.

Citation: Brown, R., Gonzalez, J.C. & Afuang, L. 2009. Dryocalamus philippinus. The IUCN Red List of Threatened Species 2009: e.T169765A6671014. . Downloaded on 15 October 2018.
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