Vol. 59, 2020
Phylogeography of Triplophysa stenura
(Nemacheilidae): Responded to the Mid-Pleistocene Climate Transition in
the Qinghai-Tibetan Plateau
Hu1,2, Mingdian Liu3,*, and Dekui He1,*
Key Laboratory of Aquatic Biodiversity and Conservation, Institute of
Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
*Correspondence: E-mail: firstname.lastname@example.org (He).
E-mail: email@example.com (Hu)
2University of Chinese Academy of Sciences, Beijing,
3Yangtze River Fisheries Research Institute of Chinese
Academy of Fishery Science, Scientific Observing and Experimental
Station of Fishery and Environment in the Upper and Middle Reaches of
the Yangtze River, Ministry of Agriculture, Wuhan, Hubei 430223, China.
*Correspondence: E-mail: firstname.lastname@example.org (Liu)
Received 18 July 2020 / Accepted 22
Communicated by Hin-Kiu Mok
Pleistocene climatic oscillations
have greatly influenced the evolutionary histories and distribution
patterns of most extant species. In this study, the phylogeographic
patterns and evolutionary history of Triplophysa
stenura were investigated. A total of 359 individuals from 19
locations covering the species’ distribution range were collected, and
two mitochondrial genes (COI
and Cyt b) and the
recombination activating protein 1 gene (Rag1) were analyzed. Two
deeply divergent lineages, corresponding geographically to the northern
and southern Tanggula Mountain, were observed, and shallow divergences
were found within the southern and central Qinghai-Tibetan plateau
(QTP). The estimated divergence time between the northern and southern
Tanggula lineages was around 1.07 Mya. Within the southern Tanggula
Mountain lineages, the Nu and Subansiri rivers populations were split
about 0.74 Mya, and the southwestern and central QTP populations were
divided with the southeastern QTP ones approximately 0.67 Mya. The
divergence times of the lineages were matched with two major
glaciations in the QTP (the Xixiabangma Glaciation, 1.17–0.80 Mya and
Kunlun Glaciation, 0.72–0.62 Mya). Together with demographic history
analyses, our results highlighted that major glacial cycles during the
mid-Pleistocene played a major role in sculpting the distribution
pattern of T. stenura, and led to the gene homogenization crossing the
drainage populations in the southwestern and central QTP.
Key words: The Qinghai-Tibetan
plateau, Phylogeography, Climate oscillation, Pleistocene glacial
cycles, Triplophysa stenura.
Citation: Hu J, Liu M, He D. 2020.
Phylogeography of Triplophysa stenura (Nemacheilidae): responded to the
mid-Pleistocene climate transition in the Qinghai-Tibetan Plateau. Zool
Stud 59:0zz. doi:-.