>>>>>>>>Besides, who says a single instance of natural selection cannot be effective? Remember, natural selection acts upon existing variation. If there are x number of snakes at a locality and n of them have, by chance, the inherited behavior of favoring deep inaccessible crevices, then a single collector acting once (and acting illegally because of his disregard for bag limits) can possibly remove all of the individuals that do not have such behavior.


Sorry but that is absurd. Maybe in a population of three, but I have never seen a population of three. Hence the need for repeated acts over generations to shift the behavior. KW would rip you up on this line of BS.

BTW collecting zonata is not illegal through much of their range. Further, the top of Mount Laguna has been repeatedly hit over decades and I do have that data.
-----
Rick Staub

[ Reply To This Message ] [ Subscribe to this Thread ] [ Show Entire Thread ]