Fig. 1From: Maladaptive plasticity facilitates evolution of thermal tolerance during an experimental range shiftSchematic drawing of evolved lines. The fluctuation line was exposed to increasingly cooler and more fluctuating, daily temperatures, maintaining the upper thermal limit but reducing the lower thermal limit by 2 °C each generation until the sixth generation experienced a temperature fluctuation between 17 and 27 °C per day (blue). The constant-decline evolved line was reared such that each generation experienced a constant temperature, but this temperature was decreased by 2 °C at the start of each new generation (red). Control conditions were maintained at a constant 27 °C over all generations (grey). Depicted frequency of temperature fluctuations is not to scaleBack to article page