Sexual selection intensity promotes the evolution of delayed maturation by sex in birds

A new study published in Evolution Letters reveals that sex differences in maturation times arise in bird species where one sex is rarer and competes more strongly for mates than the other, supporting the prediction that sexual selection selects for delayed maturation. Here, lead author Dr. Sergio Ancona explains his findings. The age at sexual …

Revealing the trade-off between resistance and maintenance under sexual conflict

New research published in Evolution Letters demonstrates that in fruit flies, female resistance to sexual conflict is dependent on food availability. Lead author of the study, Dr Wayne Rostant, tells us more. In species which reproduce sexually, i.e. either with separate sexes (or sex functions in the case of hermaphrodites) it is common to find …