Abstract:
:The mysterious Asian hynobiid salamander, Protohynobius puxiongensis, was described based on a single specimen collected in 1965 and never found again since then. Because the specimen had an internasal bone, Pr. puxiongensis was thought to retain a primitive character lost by a common ancestor of all other hynobiid salamanders, and it was thus considered to be not only a new genus, but also a new subfamily. This conclusion bothered herpetologists for decades because it was based on only one specimen and one character without other living specimens being rediscovered. After years of field effort, we rediscovered living individuals of Pr. puxiongensis at its type locality. All characters observed in rediscovered specimens are identical to the original description of the holotype except the internasal bone, implying that the internasal bone observed in the holotype may be just an individual variation. To examine the phylogenetic position of Pr. puxiongensis, we sequenced complete mitochondrial genomes for this species, together with two Pseudohynobius species. By combining 18 published hynobiid mitochondrial genomes and our new sequences, we reconstructed a comprehensive phylogenetic relationship of Hynobiidae at the genus level. Our results indicate that Pr. puxiongensis is deeply nested within the hynobiid phylogeny. It is the sister group of the Pseudohynobius species, and the validity of subfamily Protohynobiinae is not supported.
journal_name
Mol Phylogenet Evoljournal_title
Molecular phylogenetics and evolutionauthors
Peng R,Zhang P,Xiong JL,Gu HJ,Zeng XM,Zou FDdoi
10.1016/j.ympev.2009.12.011subject
Has Abstractpub_date
2010-07-01 00:00:00pages
252-8issue
1eissn
1055-7903issn
1095-9513pii
S1055-7903(09)00517-Xjournal_volume
56pub_type
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