This is kind of interesting. Previous experiments had seemed to confirm that hyper-aggressive males got more sex, cutting out the less aggressive ones, but this was only because experiments were conducted under conditions where the females couldn't move away from the area.
However, when the researchers opened gates between the chambers so they were all connected and the insects could range more freely, things changed. Females left areas where they were harassed and congregated in regions of the tank that had only non-aggressive males. As a group, those males had significantly more successful matings than did the hyperaggressive males...OK, we're talking about water striders, but it certainly sounds like it might have broader significance. It would be interesting to see a study of human female mating choices comparing situations where the women felt like they had little chance to leave an area, compared to females who could easily relocate. Would the ease of female relocation have an impact on male behavior as well?"The naive view of Darwinian evolution is that it always favors the most savage, brutal and selfish behaviors. It doesn't -- and this is one example of that. In nature, groups of cooperative individuals are more successful than groups of selfish individuals."
