FWIW:
http://en.wikipedia.org/wiki/Overpopulation
I recall learning something about this in a rodent species in school, but that was a long time ago and it's difficult to search for. Most hits seem to concern human overpopulation no matter how I go about it.
http://en.wikipedia.org/wiki/Overpopulation
Quote:Some species seem to have a measure of self-control, by which individuals refrain from mating when they find themselves in a crowded environment. This voluntary abstinence may be induced by stress or by pheromones.Unfortunately no reference is given, so take it as you will.
I recall learning something about this in a rodent species in school, but that was a long time ago and it's difficult to search for. Most hits seem to concern human overpopulation no matter how I go about it.
