Living longer – variability in infection-fighting genes can be a boon for male survival
Females of mammals (including humans) tend to outlive males, a circumstance that is usually attributed to males´ more aggressive and hence energy-depleting behaviour, especially when they compete for females. This might also explain why males of many species usually show a higher parasite burden than females. Therefore, high variability of immune genes, supposed to reduce susceptibility to pathogens, may be more important for males. Scientists at the Research Institute of Wildlife Ecology (FIWI) of the University of Veterinary Medicine, Vienna have now found that male Alpine ...








