Why females have longer lives than males
Scientists have found a clue to understand the mechanism behind why females live longer than males.
A study from the University of Exeter showed that male flies die earlier than their female counterparts when forced to evolve with the pressures of mate competition and juvenile survival.
The research used populations of the fly Drosophila simulans that had evolved under different selection regimes. The study shows that mate competition (sexual selection), along with survival (natural selection), was tougher on male ageing than it is on females reducing their lifespan by about a third.