European dung-fly females all aflutter for large males
Friday, April 13, 2012 - 15:10
in Biology & Nature
European dung fly females prefer large males, making them the driving selective force behind the rare phenomenon in insects of large males and small females. This is what evolutionary ecologists discovered when they compared North American and European dung flies, which not only differ in sexual size dimorphism (SSD), but also in their mating behavior.