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. 2020 Jun 19;3:316. doi: 10.1038/s42003-020-1039-5

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 1 — a Summary of the phylogenetic relationships among Old World camels using the alpaca (Vicugna pacos) as an outgroup. b Results from the population clustering analysis. Each horizontal bar corresponds with the proportion of ancestry in either two or three population clusters. c The first two principal components explain 23.3% and 10.1% of the SNP variation, respectively, and easily differentiate the three camel species. d Euler diagram showing the number of segregating SNPs unique to each species and shared between them. Note that the number of C. bactrianus individuals (n = 7) was less than the number of C. ferus and C. dromedarius individuals (n = 9). Approximately 2.1 million SNPs fixed between species are not included.