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Diesmos, A. C., Buskirk, J. R., Schoppe, S., Diesmos, M. L. L., Sy, E. Y., & Brown, R. M. (2012). Siebenrockiella leytensis (taylor 1920) – palawan forest turtle, philippine forest turtle. In A. G. J. Rhodin, P. C. H. Pritchard, P. P. van Dijk, P. A. Saumure, K. A. Buhlmann & J. B.Iverson (Eds.), Conservation Biology of Freshwater Turtles and Tortoises: A Compilation Project of the IUCN/SSC Tortoise and Freshwater Turtle Specialist Group Vol. 5IUCN/SSC Tortoise and Freshwater Turtle Specialist Group. 
Added by: Admin (06 Jan 2014 18:22:44 UTC)
Resource type: Book Article
DOI: 10.3854/crm.5.066.leytensis.v1.2012
BibTeX citation key: Diesmos2012
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Categories: General
Keywords: Geoemydidae, Habitat - habitat, Schildkröten - turtles + tortoises, Siebenrockiella leytensis, Südostasien - South East Asia
Creators: B.Iverson, Brown, Buhlmann, Buskirk, Diesmos, Diesmos, van Dijk, Pritchard, Rhodin, Saumure, Schoppe, Sy
Publisher: IUCN/SSC Tortoise and Freshwater Turtle Specialist Group
Collection: Conservation Biology of Freshwater Turtles and Tortoises: A Compilation Project of the IUCN/SSC Tortoise and Freshwater Turtle Specialist Group
Views: 8/880
Views index: 23%
Popularity index: 5.75%
URLs     http://www.iucn-tftsg.org/cbftt/
Abstract     
Summary. – The Palawan Forest Turtle (or Philippine Forest Turtle), Siebenrockiella leytensis (Family Geoemydidae), is one of the most enigmatic species of freshwater turtles in Southeast Asia, and has been surrounded with more confusion and misconception than almost any other turtle in the region. For over 80 years, its true geographic distribution in the Philippines remained a mystery; its apparent rarity and the rudimentary knowledge of its ecology and natural history had bestowed upon it an almost mythical reputation. Long thought to come from the eastern Philippine island of Leyte, it was very recently discovered to actually occur in the Palawan region of the western Philippines. The species is the largest and heaviest geoemydid turtle known from the Philippines, attaining a carapace length of more than 300 mm and weighing as much as 3.5 kg. Known clutch size is 1–2, and eggs average 49.6 x 26.5 mm in size and weigh 18–30 g. As predicted by previous workers, the recent discovery of a natural population of S. leytensis on Palawan has already spurred a collecting frenzy among wildlife trappers and traders to supply domestic and international markets for the illegal wildlife trade. In spite of its official protected status in local and international listings, the illegal trade in S. leytensis is rampant and is perceived currently as the greatest threat to the species. This threat is exacerbated by the continuing destruction of the lowland forests of Palawan, the primary habitat of the species. If the current trend of overexploitation continues, it is certain that several subpopulations of S. leytensis will soon collapse. In the face of these threats, wildlife authorities on Palawan must immediately enforce relevant laws and encourage greater coordination among appropriate government agencies that typically work in isolation. Conservation programs need to prioritize efforts that will curb illegal collection of S. leytensis and other threatened species and monitor known populations. Top priority research studies for S. leytensis include population biology, ecology, and in-depth investigation of the dynamics of illegal trade in the species. Distribution. – Philippines. The species appears to be restricted to the northern half of the island group of Palawan in western Philippines. It does not occur at the erroneous original type locality of Leyte Island in eastern Philippines. Synonymy. – Heosemys leytensis Taylor 1920, Geoemyda leytensis, Siebenrockiella leytensis, Siebenrockiella (Panyaenemys) leytensis, Panyaenemys leytensis. Subspecies. – None. Status. – IUCN 2012 Red List: Critically Endangered (CR A2d, B1+2c) (assessed 2000); TFTSG Draft Red List: Critically Endangered; CITES: Appendix II; Philippines: Republic Act 9147 (Wildlife Resources Conservation and Protection Act).
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