Figure 2.

The relationship between the MHC-I diversity (i.e. the number of different MHC-I alleles per individual) and offspring recruitment success in females (a) and males (b) showing predictions (±2 s.e.) from cubic spline models (see the text for model details). Offspring recruitment success is here illustrated using the residual lifetime number of recruiting offspring from a regression with lifetime number of fledglings. Removing the two outliers with high offspring recruitment success in the females did not affect the predictions of the cubic spline model. Note: jitter was added to the number of different MHC-I alleles to distinguish individual data points.