Hiding on jagged karst pinnacles:A new microendemic genus and species of a limestone-dwelling agamid lizard(Squamata:Agamidae:Draconinae)from Khammouan Province,Laos  

作　　者：Saly Sitthivong Peter Brakels Santi Xayyasith Nathanaël Maury Sabira Idiiatullina Parinya Pawangkhanant Kai Wang Tan Van Nguyen Nikolay A.Poyarkov 

机构地区：[1]Faculty of Forestry,National University of Laos,Vientiane 01170,Lao PDR [2]IUCN Laos PDR,Vientiane 01160,Lao PDR [3]Faculty of Environmental Sciences,National University of Laos,Vientiane 01170,Lao PDR [4]Chelonian Conservation Center Laos,World Encyclopedia of Herpetofauna,Vientiane 01000,Lao PDR [5]Department of Vertebrate Zoology,Biological Faculty,Lomonosov Moscow State University,Moscow 119234,Russia [6]Rabbit in the Moon Foundation(RIM),Suanphueng,Ratchaburi 70180,Thailand [7]State Key Laboratory of Genetic Resources and Evolution,Kunming Institute of Zoology,Chinese Academy of Sciences,Kunming,Yunnan 650223,China [8]Southeast Asia Biodiversity Research Institute,Chinese Academy of Sciences,Yezin,Nay Pyi Taw 05282,Myanmar [9]Institute for Research and Training in Medicine,Biology and Pharmacy,Duy Tan University,Da Nang 550000,Vietnam [10]College of Medicine&Pharmacy,Duy Tan University,Da Nang 550000,Vietnam [11]Joint Russian-Vietnamese Tropical Research and Technological Center,Nghia Do,Cau Giay,Hanoi 122000,Vietnam

出　　处：《Zoological Research》2023年第6期1039-1051,共13页动物学研究（英文）

基　　金：supported by the Russian Science Foundation(22-14-00037)to N.A.P.(phylogenetic analyses);National Natural Science Foundation of China(32130015)to K.W.(data collection);partially by Rufford Foundation(39897-1) to N.T.V.(data collection)。

摘　　要：We describe a unique new species and genus of agamid lizard from the karstic massifs of Khammouan Province,central Laos.Laodracon carsticola Gen.et sp.nov.is an elusive medium-sized lizard(maximum snout-vent length101 mm)specifically adapted to life on limestone rocks and pinnacles.To assess the phylogenetic position of the new genus amongst other agamids,we generated DNA sequences from two mitochondrial gene fragments(16S rRNA and ND2)and three nuclear loci(BDNF,RAG1 and c-mos),with a final alignment comprising 7418 base pairs for 64 agamid species.Phylogenetic analyses unambiguously place the new genus in the mainland Asia subfamily Draconinae,where it forms a clade sister to the genus Diploderma from East Asia and the northern part of Southeast Asia.Morphologically,the new genus is distinguished from all other genera in Draconinae by possessing a notably swollen tail base with enlarged scales on its dorsal and ventral surfaces.Our work provides further evidence that limestone regions of Indochina represent unique“arks of biodiversity”and harbor numerous relict lineages.To date,Laodracon carsticola Gen.et sp.nov.is known from only two adult male specimens and its distribution seems to be restricted to a narrow limestone massif on the border of Khammouan and Bolikhamxai provinces of Laos.Additional studies are required to understand its life history,distribution,and conservation status.

关 键 词：Biodiversity ENDEMISM INDOCHINA Karstic landscape Laodracon carsticola Phylogeny Southeast Asia Taxonomy 

分 类 号：Q959[生物学—动物学]