I'm pretty certain the unequivocal definition of a species is 'reproductive
isolation'.

David J. Bockman, Fairfax, VA (USDA Hardiness Zone 7)
Bunabayashi Bonsai On The World Wide Web: http://www.bunabayashi.com
email:


-----Original Message-----
From: Internet Bonsai Club ]On Behalf
Of Rich Conley
Sent: Tuesday, April 08, 2003 4:24 PM
To:
Subject: [IBC] evil squirrels!


If they will not breed with the grey squirrels, they are a
seperate species. For
speciation to occur, it does not have to be that they can not
mate, the fact that
they will not breed is just as valid.

Geographic isolation is as much an accepted qualification for
speciation as genetic
differences. They are isolated, so the population is drifting
away from what it
originally came from.


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