Tuesday, January 16, 2007

Of Lizards and Man

Of Lizards:

I am reading a paper in evolutionary dynamics and an interesting fact about lizards caught my eye.

"There exist three morphs of the male Lizard Uta stansburiana who differ in their mate-guarding behaviour.
Type A - monogamous and succeeds in preventing other males from approaching their mate.
Type B - polygamous and less efficient, having to split its effort on several females.
Type C - does not engage in mate guarding behavior at all but roams around in search of sneaky matings."
(Quote from: Science, vol 303, pg 795)

The original research is published in Nature 380, 240 - 243 (21 March 1996
Another result in the paper is that all three kinds of lizards are evolutionary favorable and their numbers will oscillate. Meaning that if a kind is rare, this kind will be able to invade the other 2 more common kinds. But when it is common, it becomes invadable by the other 2 kinds. Hmmmm... and there are evidence of this oscillatory behavior.

Of Man:
Hmmm... I guess there is nothing much to say. Mebe we are unlucky in the sense that our generation is the age where the type A are going extinct. But oh well, it is good to know that they will never go extinct. And that there will be a rebounce of type A guys in future. (when they become rare enough). Haha.. =P

Must start keeping a look out for younger guys.. haha.. 0ops... haha..

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