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. 2017 Oct 11;12(10):e0185918. doi: 10.1371/journal.pone.0185918

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© 2017 Payton 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 credited.

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Fig 7 — (A) Mean growth rate index in diploid (blue, n = 8) and triploid (green, n = 8) oysters, measured with valvometry HFNI. (A1) One-year (right axis) and 15-day (left axis) growth rate index in diploid and triploïd oysters. The x-axis shows time, with SE for summer equinox, SS for summer solstice, AE for autumn equinox, WS for winter solstice. (A2) Fifteen-day growth rate indices presented on a polar plot. (A3) Three-way analysis of variance on 15-day growth rate index using ploidy (diploid or triploïd), daylength (long or short days) and direction of daylength (increasing or decreasing daylength). (B) Direct measured growth on a dedicated group of oysters (7 measurements, n = 16 per ploidy). Stars (*) indicate significant differences between diploid and triploid oysters at a given time point. P-value = 0.05.