Phylogenetic relationships of Ansonia from Southeast Asia inferred from mitochondrial DNA sequences: Systematic and biogeographic implications (Anura: Bufonidae)

We investigated the phylogenetic relationships and estimated the history of species diversification and biogeography in the bufonid genus Ansonia from Southeast Asia, a unique organism with tadpoles adapted to life in strong currents chiefly in montane regions and also in lowland rainforests. We est...

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Bibliographic Details
Published in:Molecular phylogenetics and evolution 2010-02, Vol.54 (2), p.561-570
Main Authors: Matsui, Masafumi, Tominaga, Atsushi, Liu, Wanzhao, Khonsue, Wichase, Grismer, Lee L., Diesmos, Arvin C., Das, Indraneil, Sudin, Ahmad, Yambun, Paul, Yong, Hoisen, Sukumaran, Jeet, Brown, Rafe M.
Format: Article
Language:English
Subjects:
Animals
Ansonia
Asia, Southeastern
Bayes Theorem
Bayesian analysis
Borneo
Bufonidae - classification
Bufonidae - genetics
Calibration
Cladding
DNA, Mitochondrial - genetics
Evolution
Evolution, Molecular
Freshwater
Genes
Geography
Likelihood Functions
mtDNA
Organisms
Phylogenetics
Phylogeny
Rain forests
Sequence Alignment
Sequence Analysis, DNA
Southeast Asia
Speciation
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Summary:We investigated the phylogenetic relationships and estimated the history of species diversification and biogeography in the bufonid genus Ansonia from Southeast Asia, a unique organism with tadpoles adapted to life in strong currents chiefly in montane regions and also in lowland rainforests. We estimated phylogenetic relationships among 32 named and unnamed taxa using 2461bp sequences of the mitochondrial 12S rRNA, tRNAval, and 16S rRNA genes with equally-weighted parsimony, maximum likelihood, and Bayesian methods of inference. Monophyletic clades of Southeast Asian members of the genus Ansonia are well-supported, allowing for the interpretation of general biogeographic conclusions. The genus is divided into two major clades. One of these contains two reciprocally monophyletic subclades, one from the Malay Peninsula and Thailand and the other from Borneo. The other major clade primarily consists of Bornean taxa but also includes a monophyletic group of two Philippine species and a single peninsular Malaysian species. We estimated absolute divergence times using Bayesian methods with external calibration points to reconstruct the relative timing of faunal exchange between the major landmasses of Southeast Asia.
ISSN:1055-7903
1095-9513
DOI:10.1016/j.ympev.2009.08.003