[ExI] [Bulk] Re: IQ and beauty
pharos at gmail.com
Tue Oct 6 09:44:27 UTC 2015
On 5 October 2015 at 02:56, spike wrote:
> It has been argued that peacocks have more brilliant colors if they are free
> of parasites, so peahens selecting the most brilliantly colored males are
> selecting for the healthiest mates. If we really want to stretch, we could
> argue that the peacock would be impossible for a serpent to swallow, being
> too long. Or that the huge tail would discourage some predators, who could
> be intimidated by its size.
> Still I agree that as the tails become too unwieldly, this is more likely an
> example of mate selection to extinction.
Evolution tries everything.
Most animals require close contact to reproduce, using either internal
fertilization (as humans do) or fertilization nearby (think spawning
salmon). So having a similarly matched body size is helpful for
reasons of physical logistics—as well as for personal safety (as we’ll
soon see). But for causes still obscure to most—except Evolution
herself—in a very few, very distantly related animals, males and
females long ago diverged to two radically different scales.
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