Re: Speciation - how do you know?

Nicholas Rosen (
2 Oct 1996 01:23:20 GMT

Paul Crowley ( wrote:
: In article <52lrce$>
: "Nick Maclaren" writes:

: Compare these putative hunters to a pride of lions. They have
: everything, including sprinting speed. Lions do not find life that
: easy. They never adapted to Europe (AFAIK). The prey is too rare
: or too dangerous or too something else. So how could a much less
: effective hunter with a much greater energy requirement make out?

One minor point. There were lions in Europe until about the first
century A.D., when they were killed off by humans.

: In a group of 40, you'd only have 8 or fewer mature males. So
: your group has to be much larger. Even then the rate of death
: or serious injury would seem much too high. Comparing with other
: predators (assuming H.n. was a predator) such as lions, the risk
: of serious injury has to be much lower. H.n.'s lifespan is much
: longer and the replacement of a mature male would have been much
: slower and more costly.

I certainly agree with this.

Nicholas Rosen

Standard disclaimers apply. I'm not speaking for Boston University. Look,
when our esteemed Chancellor has an opinion on something, he doesn't need
me to express it for him.