Figure 3.

The relationships between circulating corticosterone at the time of the experimental male introduction (after 12 h), and the time of egg laying the second egg (several weeks later). The two data series represent repeated measures of the same females, when breeding with compatible (open circles) and incompatible males (filled circles). There were consistent differences between females in their corticosterone responses to the different types of male. Corticosterone levels from initial introduction were correlated with subsequent levels at second egg production for females paired with compatible males (Spearman rank correlation Rho = 0.89, p < 0.0001; y = −6.49 + 2.38x), but not when paired with incompatible males (Rho = 0.17, p > 0.27; y = 4.17x −17.57).