Figure 9.10 Environmental sex determination in the Jacky dragon. Under natural conditions, the eggs of the Jacky dragon become female under the low and high temperatures. Eggs become both male and female under intermediate temperatures. Female fitness is highest for females raised at the high temperature. Male fitness is highest for males raised at the intermediate temperature. Error bars are standard errors.
Data from D. A. Warner and R. Shine, The adaptive significance of temperature-dependent sex determination in a reptile, Nature 451 (2008): 566–569.