文献类型： 外文期刊
作者： Xu, Lei 1 ; Lin, Qiuqi 2 ; Xu, Shaolin 2 ; Gu, Yangliang 2 ; Hou, Juzhi 3 ; Liu, Yongqin 3 ; Dumont, Henri J. 2 ; Han, Bo 1 ;
作者机构： 1.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou, Guangdong, Peoples R China
2.Jinan Univ, Inst Hydrobiol, Guangzhou, Guangdong, Peoples R China
3.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing, Peoples R China
4.Guangdong Prov Key Lab Fishery Ecol & Environm, Guangzhou, Guangdong, Peoples R China
5.Minist Agr, Key Lab South China Sea Fishery Resources Dev & U, Guangzhou, Guangdong, Peoples R China
关键词： COI; Daphnia; DNA taxonomy; Tibetan Plateau
期刊名称：ECOLOGY AND EVOLUTION （ 影响因子：2.912； 五年影响因子：3.271 ）
ISSN： 2045-7758
年卷期： 2018 年 8 卷 10 期
页码：
收录情况： SCI
摘要： Daphnia on the Tibetan Plateau has been little studied, and information on species diversity and biogeography is lacking. Here, we conducted a 4-year survey using the barcoding fragment of the mitochondrial COI gene to determine the distribution and diversity of Daphnia species found across the Plateau. Our results show that species richness is higher than previously thought, with total described and provisional species number doubling from 5 to 10. Six of the taxonomic units recovered by DNA taxonomy agreed well with morphology, but DNA barcoding distinguished three clades each for the D.longispina (D.galeata, D.dentifera, and D.longispina) and D.pulex (D.pulex, D. cf. tenebrosa, and D.pulicaria) complexes. The sequence divergence between congeneric species varied within a large range, from 9.25% to 30.71%. The endemic D.tibetana was the most common and widespread species, occurring in 12 hyposaline to mesosaline lakes. The lineage of D.longispina is the first confirmed occurrence in west Tibet.
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