Two New Hynobius (Caudata: Hynobiidae) Salamanders From Taiwan

Lai, June Shiang; Lue, Kuang Yang

doi:10.1655/06-065.1

Cited by 21 publications

(25 citation statements)

References 22 publications

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“…In the present study, the pairwise comparison showed that the sequence divergence (pdistance) between H. leechii and HC1 (10.4%); H. leechii and HC2 (10.9%); H. leechii and HC3 (9.1%) is higher than that between H. leechii and H. yangi (p-distance = 6.3%; K2P = 6.8%, data not shown). These rates are higher than levels ordinarily found between different species in the genus Hynobius [K2P > 7.8%, Lee et al (1998); 12-13% in p-distance between H. amjiensis and H. yiwuensis, Fu et al (2003); 5.9-6.5% between H. formosanus and H. glasialis, 9.9-10.6% in p-distance between H. arisanensis and H. fuca Lai and Lue (2008)]. According to the high pairwise sequence divergence, we assumed the presence of more divergent populations of the genus Hynobius in South Korea.…”

Section: Estimations Of Divergence Timesmentioning

confidence: 74%

“…In mtDNA cyt-b gene, the interspecific sequence divergence in several Hynobius species varied from 3.2 to 9.8% in p-distance (Lai and Lue, 2008). Lai and Lue (2008) displayed a p-distance between new Hynobius species (H. formosanus and H. glasialis) and other Hynobius species 9.8-11.1%. Furthermore, the same locus for other Hynobius species, Lee et al (1998) proposed a 7.8% in K2P between H. leechii and H. yangi.…”

Section: Estimations Of Divergence Timesmentioning

confidence: 99%

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Mitochondrial DNA Data Unveil Highly Divergent Populations within the Genus Hynobius (Caudata: Hynobiidae) in South Korea

Baek

Lee

et al. 2011

Molecules and Cells

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Korean salamanders of the genus Hynobius are currently classified into 3 species, H. leechii, H. quelpaertensis, and H. yangi. To investigate the phylogenetic relationship of these species, we analyzed the partial sequence of mitochondrial cytochrome b gene (907 bp) of 197 specimens from 43 regions in South Korea. Of these specimens, 93 were additionally examined with 12S rRNA (799 bp). Based on the partial sequence of the mitochondrial cytochrome b gene and 12S rRNA, 89 and 36 haplotypes were defined, respectively, consisting of six subclades (H. leechii, H. quelpaertensis, H. yangi, HC1, HC2, and HC3). Among these subclades, the three subclades (HC1, HC2, and HC3) were clearly separated from the 3 previously reported species in the genus Hynobius. Pairwise sequence divergence between the six subclades ranged from 6.3 to 11.2% in cytochrome b gene and 2.0 to 4.3% in 12S rRNA. These results indicate there may be more divergent populations than the three currently described. Moreover, the estimation of divergence time revealed that the Hynobius species in South Korea diverged during the Miocene epoch, approximately 9 -5 MYA. In addition, we confirmed the distribution of the three known species (H. leechii, H. quelpaertensis, and H. yangi) and determined the distributions of new, distinct groups (or subclades; HC1, HC1, and HC3). To more accurately establish the taxonomic status and population structure, further genetic, morphological, and ecological studies will be needed.

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Section: Estimations Of Divergence Timesmentioning

confidence: 74%

Section: Estimations Of Divergence Timesmentioning

confidence: 99%

Mitochondrial DNA Data Unveil Highly Divergent Populations within the Genus Hynobius (Caudata: Hynobiidae) in South Korea

Baek

Lee

et al. 2011

Molecules and Cells

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“…fossils; Kawamura et al., ) have provided strong and widely accepted evidence regarding the timing of the emergence of Taiwan. In addition, although in situ speciation events of terrestrial Taiwanese vertebrates have been reported (Lai & Lue, ; Li et al., ; Tseng, Li, Hsieh, Wang, & Lin, ; Tseng, Wang, Li, & Lin, ), few of these events pre‐date the early Pliocene ( c . 5 Ma; but see Li et al., for Hynobius spp.).…”

Section: Discussionmentioning

confidence: 99%

“…In addition, although in situ speciation events of terrestrial Taiwanese vertebrates have been reported (Lai & Lue, 2008;Li et al, 2011;Tseng, Li, Hsieh, Wang, & Lin, 2014;Tseng, Wang, Li, & Lin, 2015), few of these events pre-date the early Pliocene (c. 5 Ma; but see Li et al, 2011 for Hynobius spp.). Therefore, we advocate for the first explanation of Hawlitschek et al (2017) that the divergence events of extant species occurred before their colonization into Taiwan, and extinctions within the ancestral taxa resulted in relict populations in Taiwan (Mays et al, 2015;Wang et al, 2013).…”

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confidence: 99%

Geographical and temporal origins of terrestrial vertebrates endemic to Taiwan

Gao

et al. 2018

Journal of Biogeography

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Aim Phylogeographical studies of Taiwan have advanced our knowledge of the origins of its fauna, but the discrepancies raise issues related to the interpretation of single‐taxon studies. Here, we provide a synthesis of the biogeographical histories of multiple terrestrial vertebrates endemic to Taiwan and infer the colonization processes within the context of geological and climatic events. Location Taiwan and neighbouring land masses. Taxon Terrestrial vertebrates. Methods We conducted a meta‐analysis of 28 phylogenetic studies of 33 endemic Taiwanese terrestrial vertebrates to summarize the insights into their source regions and divergence times. We used dispersal–extinction–cladogenesis models to reconstruct the ancestral ranges of 54 endemic species based on a recently published time‐calibrated phylogenetic tree. By constructing a frequency histogram that quantified the number and timing of divergence events within 1 Myr bins, we inferred the spatiotemporal colonization patterns of endemic Taiwanese species. Results The results from 28 phylogenetic studies revealed that South China is the main source region of endemic Taiwanese species. However, based on a more comprehensive time tree, the ancestral area reconstruction analyses indicated that endemic species are predominately of Eastern Himalayan origin. Both datasets highlighted a temporal pattern that the majority of colonization events of terrestrial vertebrates endemic to Taiwan occurred from the early Pliocene (c. 5 Ma) onwards, and these events were temporally congruent with the geological estimates of the emergence of Taiwan Island. Main conclusions Terrestrial vertebrates endemic to Taiwan reached the island over the last 5 Myr from a variety of zoogeographical regions. In contrast to the traditional notion, the Eastern Himalayas is the most important source region of endemic Taiwanese species, followed by South China and Indochina. In addition to the land bridge, transoceanic dispersal provided another potential mode for species to colonize Taiwan.

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“…The central Qinling Mountains are suggested as the sympatric areas between these two species of Feirana (Wang et al, 2009). However, F. kangxianensis, which is closely related to F. taihangnica, is currently known to only occur in Kangxian County, Gansu, and is discontinuously distributed in those areas of F. taihangnica (Yang et al, 2011 (Shen et al, 2004;Fei et al, 2006Fei et al, , 2010aZhou et al, 2006;Lai and Lue, 2008). These distribution patterns may relate to the appearance of several ice ages in the Quaternary or the vicariance events (Fei et al, 2006;Zeisset and Beebee, 2008).…”

Section: Endemic Amphibians and Their Distributions In Chinamentioning

confidence: 99%