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Many important fitness traits including longevity, reproductive success, parasite resistance, territory-holding ability, song complexity and even attractiveness often correlate with heterozygosity in natural populations. Where documented, such heterozygosity-fitness correlations (HFCs) have the clear potential to influence interactions between pathogens and their hosts and the evolution of mate c ...

"The essentials of sperm function differ little from one species to another, and yet there is tremendous diversity among species in the type and number of sperm a male produces. My research programme aims to understand how these traits, which are fundamental to male fertility, evolve. Specifically, I aim to identify selective forces acting on sperm, spermatogenesis and the testis, and adopt a mult ...