THE INTERESTING PHENOMENON OF EVOLUTION

I caught a snippet of a National Geographic feature on how a type of ants called the Pelagius evolved into a slave capturing kind. Since their mandibles are built for killing they are useless when it comes to taking care of themselves so what these warrior ants do is pillage and capture another type of ants called the Formica. The latter class have cutter type mandibles used for foraging food and which are useless for battle. When the slave Formica ants grow old and die, the Pelagius go out and hunt for Formica ant nests. They ruthlessly attack helpless Formica ants and carry off the eggs. When these eggs grow in the Pelagius nests these become future generations of slaves!

Very interesting!