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Table 1 Design of the back-switch experiments used to delineate the thermosensitive period

From: Models of primary sex ratios at a major flatback turtle rookery show an anomalous masculinising trend

Treatment Switch regime Starting day of switcha Length of switcha(d) Proportion developed at start Proportion developed at end
1 28°C–32.5°C–28°C; MFM 25 6 35 50
2 28°C–32.5°C–28°C; MFM 35 6 50 65
3 28°C–32.5°C–28°C; MFM 25 4 35 45
4 28°C–32.5°C–28°C; MFM 32 4 46 56
5 28°C–32.5°C–28°C; MFM 38 4 55 65
6 28°C–28°C–28°C; M control 25 6 - -
7 32.5°C–28°C–32.5°C; FMF 16 10 35 50
8 32.5°C–28°C–32.5°C; FMF 22 10 49 64
9 32.5°C–28°C–32.5°C; FMF 16 7 35 45
10 32.5°C–28°C–32.5°C; FMF 20 7 45 55
11 32.5°C–28°C–32.5°C; FMF 24 7 54 64
12 32.5°C–32.5°C–32.5°C; F control 16 10 - -
  1. aDue to the influence of temperature on physiological rates, switches to the female-producing temperature started later than those to the male-producing temperatures; similarly, the lengths of the switch windows were longer at the male-producing temperature.