Re: NANFA-L-- Kin Selection
Wed, 16 Feb 2005 11:58:44 -0700

In my example, I was talking about a species on the verge of a speciation event,
where "normal" parents are still giving birth to mutant offspring (via
heterozygosity). This helps cover the predation issue, until boundaries begin
to evolve that segregate the species more properly.

Also, given a stress to the predator population, or a particularly potent toxin,
nature can arrive-in-a level where subsequant generations do not require
training -- they've got it-in-an instinctual level. It's fairly obvious how
this happens with a bad toxin -- obviously, if the predators are dying, those
that genetically "know" to avoid it are the only ones left to pass on their
genes! :) If it is not toxic, but just bad tasting or with mild effects, it
will take a stress to train the population, such as a shortage of food.


Quoting Peter Unmack <peter.lists at>:

> On Wed, 16 Feb 2005, marxxx wrote:
> But it is also true that the critter being eaten must be pretty common
> and/or have reproductive output as a bunch are going to get nailed each
> year as each new generation of predator learns. But if you think about
> predation, how many minnows does a bass eat a year? A lot more than one,
> yet the minnows certainly manage to persist, thus surely a prey item that
> is eaten once, but never again has a much better chance.
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