Figure 1.

The relationship between MHC-I diversity (i.e. the number of different MHC-I alleles per individual) and offspring recruitment success. Females are shown with open circles and males are shown with black triangles. The lines show the predictions from regression models of offspring recruitment success on MHC-I diversity in females (broken line) and males (solid line) (see the text for model details). Offspring recruitment success is 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 model predictions. Note: jitter was added to the number of different MHC-I alleles to distinguish individual data points.