The biogeography of bent-toed geckos, Cyrtodactylus (Squamata: Gekkonidae)

PeerJ

article

L. Lee Grismer¹  Nikolay A. Poyarkov²  Evan S.H. Quah¹  Jesse L. Grismer¹  Perry L. Wood Jr⁵ 

[1] Department of Biology, La Sierra University;Faculty of Biology, Department of Vertebrate Zoology, Moscow State University;Joint Russian-Vietnamese Tropical Research and Technological Center;Institute for Tropical Biology and Conservation, Universiti Malaysia Sabah;Department of Biological Sciences & Museum of Natural History, Auburn University;Department of Ecology and Evolutionary Biology, University of Michigan

关键词: South Asia;    Indochina;    Southeast Asia;    Melanesia;    Phylogeny;    Centers of origin;    Dispersal;    Sundaland;    Wallacea;   

DOI  :  10.7717/peerj.13153

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

The gekkonid genus Cyrtodactylus is the third largest vertebrate genus on the planet with well over 300 species that range across at least eight biogeographic regions from South Asia to Melanesia. The ecological and morphological plasticity within the genus, has contributed to its ability to disperse across ephemeral seaways, river systems, basins, land bridges, and mountain ranges—followed by in situ diversification within specific geographic areas. Ancestral ranges were reconstructed on a mitochondrial phylogeny with 346 described and undescribed species from which it was inferred that Cyrtodactylus evolved in a proto-Himalaya region during the early Eocene. From there, it dispersed to what is currently Indoburma and Indochina during the mid-Eocene—the latter becoming the first major center of origin for the remainder of the genus that seeded dispersals to the Indian subcontinent, Papua, and Sundaland. Sundaland became a second major center of radiation during the Oligocene and gave rise to a large number of species that radiated further within Sundaland and dispersed to Wallacea, the Philippines, and back to Indochina. One Papuan lineage dispersed west to recolonize and radiate in Sundaland. Currently, Indochina and Sundaland still harbor the vast majority of species of Cyrtodactylus.

【 授权许可】

CC BY