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Jinlong Liu, Tatjana Dujsebayeva, Marina Chirikova, Xiong Gong, Dajiang Li, Xianguang Guo. Does the Dzungarian racerunner (Eremias dzungarica Orlova, Poyarkov, Chirikova, Nazarov, Munkhbaatar, Munkhbayar & Terbish, 2017) occur in China? Species delimitation and identification with DNA barcoding and morphometric analyses. Zoological Research.
Citation: Jinlong Liu, Tatjana Dujsebayeva, Marina Chirikova, Xiong Gong, Dajiang Li, Xianguang Guo. Does the Dzungarian racerunner (Eremias dzungarica Orlova, Poyarkov, Chirikova, Nazarov, Munkhbaatar, Munkhbayar & Terbish, 2017) occur in China? Species delimitation and identification with DNA barcoding and morphometric analyses. Zoological Research.

Does the Dzungarian racerunner (Eremias dzungarica Orlova, Poyarkov, Chirikova, Nazarov, Munkhbaatar, Munkhbayar & Terbish, 2017) occur in China? Species delimitation and identification with DNA barcoding and morphometric analyses

  • Received Date: 2020-10-30
  • Accepted Date: 2021-03-24
  • Rev Recd Date: 2021-03-05
  • Available Online: 2021-04-07
  • The Eremias multiocellata-przewalskii species complex is a viviparous group in the genus Eremias, and a well-known representative of taxonomically complicated taxa. Within this complex, a new species – E. dzungarica (Orlova et al. 2017) – has been recently described from western Mongolia and eastern Kazakhstan, with an apparent distribution gap in northwestern China. In this study, we used an integrative taxonomic framework to address whether E. dzungarica indeed occurs in China. Thirty specimens previously classified as E. multiocellata were collected in eastern Kazakhstan and the adjacent Altay region, China. The COI barcodes were sequenced and compiled with those from Orlova et al. (2017), and analyzed with the standard and diverse barcoding techniques. We detected an absence of a barcoding gap in this complex, which may indicate cryptic species in Eremias sp. 3 with high intraspecific diversity and multiple recently evolved species in Clade A. Both BIN and GMYC suggest an unrealistically large number of species (23 and 26, respectively), while ABGD, mPTP and BPP indicate a more conservative amount of species (10, 12 and 15, respectively), largely concordant with the previously defined species-level lineages according to phylogenetic trees. Based on molecular phylogeny and morphological examination, all 30 individuals collected in this study are reliably identified as E. dzungarica – a distinct species –confirming the occurrence of this species in the Altay region, Xinjiang, China. Potentially owing to the larger sample size in this study, our morphological analyses revealed many inconsistencies with the original descriptions of E. dzungarica that are mainly associated with sexual dimorphism or a broader range of values in various traits.
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      沈阳化工大学材料科学与工程学院 沈阳 110142

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