Allelic richness of MHC and microsatellites.

Summary of the mean (MHC) and median (MHC) number of MHC class IIB alleles per individual, and the number of different alleles found in the sampled population (MHC). The number of alleles detected per sampled stickleback (AR) is a standardized index of population-level allelic richness, and was calculated via bootstrapping with a constant sampling effort (N = 20). Limnetics and benthics did not differ in the levels of heterozygosity (H and H), or in the mean number of alleles per microsatellite locus, calculated at both the population level (Rs) and at the individual level (Sats).