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. 2018 Apr 10;18:50. doi: 10.1186/s12862-018-1168-3

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© The Author(s). 2018

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided 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 Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 2 — a Phylogenetic tree and divergence time estimation based on BEAST analysis of the cytb haplotypes of E. melanogaster. The numbers beside the nodes are posterior probabilities and bootstrap, and those below the nodes are divergence times estimated by BEAST (Ma, 95% HPD in brackets). b Median-joining network based on cytb with node sizes proportional to the frequencies of haplotypes. The number of hatch marks between haplotypes is proportional to the number of mutational changes. Dots represent undetected haplotypes. c Gene flow between maternal clades as estimated by MIGRATE (represented in %)