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. 2015 May 29;10(5):e0128859. doi: 10.1371/journal.pone.0128859

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© 2015 Yin et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Fig 3 — The x-axis represents the mean temperature of the 30 d before the investigation in Wuhan: 23.19°C (2012.5.10–2012.6.8), 29.19°C (2012.6.16–2012.7.15), 30.34°C (2012.7.18–2012.8.16), 26.27°C (2012.8.17–2012.9.15), 21.72°C (2012.9.16–2012.10.15). The proportion of melanism and the mean temperature both reached the maximum level on 2012.8.16, indicating that the proportion of melanism changed with temperature.