This week, we welcome Rosalind Murray.
Selection for elaborate female traits: sex-biased resource allocation in insects
Abstract: Sexual selection theory was developed to describe the elaborate sex-specific traits that result from intra-specific competition for mates. Since then, a substantial body of theoretical and empirical literature has revealed sexual selection to be a common phenomenon that frequently selects for weapons or ornaments that improve male reproductive success. However, in the rare cases that female-specific elaborate traits arise, we know very little about how theoretical and verbal models of ornament evolution apply. My work looks at how ecology and evolution shape sex-specific resource investment in diverse insect taxa. I will present recent work on female-specific resource investment within and between species including female ornamentation, sexual size dimorphism, and sex-biased immune expression.