Morphological and molecular variation in Tylototriton (Caudata: Salamandridae) in Laos, with description of a new species

Title
Morphological and molecular variation in Tylototriton (Caudata: Salamandridae) in Laos, with description of a new species
Authors
Phimmachak, S; Aowphol, A; Stuart, BL
Keywords
AMPHIBIA URODELA SALAMANDRIDAE; PHYLOGENETIC-RELATIONSHIPS; MITOCHONDRIAL GENOMES; SEQUENCE; CONSERVATION; ANDERSON; GENE
Issue Date
2015
Publisher
ZOOTAXA
Citation
ZOOTAXA;Zootaxa;24-Aug;2015;4006;2
Abstract
The salamandrid genus Tylototriton is poorly known in Laos, with one described species and unverified reports of two others. We undertook new fieldwork and obtained samples of Tylototriton at six localities across northern Laos during 2009-2013. Bayesian phylogenetic analysis of mitochondrial DNA, principal component analyses of 13 mensural characters, and qualitative morphological comparisons with samples from across the geographic range of Tylototriton were performed. Samples from Laos fell into four molecular and morphological groups, consisting of T. notialis, T. panhai, T. anguliceps, and a fourth lineage that is hypothesized here to be an undescribed species. Tylototriton podichthys sp. nov. is distinguished from its congeners by having distinct mitochondrial DNA haplotypes and in characteristics of the glandular skin on the head and body, shape of the rib nodules, and coloration of the body and limbs. This study expands the number of confirmed Tylototriton species in Laos from one to four, with the description of one species and extension of the ranges of T. panhai and T. anguliceps to Laos. An improved understanding of the geographic ranges of T. podichthys sp. nov. and T. anguliceps within Laos is needed.
URI
http://hdl.handle.net/11267/2284
ISSN
1175-5334
Appears in Collections:
1.National University of Laos > Faculty of Science > Journal articles
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