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Posted by: Phil Peak at Mon Jul 28 09:16:59 2008 [ Email Message ] [ Show All Posts by Phil Peak ] This is all very interesting. The definition of what a species is seems to evolve just like the animals themselves. The sayi example you cited is a good one. With such a vast range it would be expected for there to be a degree of clinal variation. The Kankakee/ south Texas bull analogy demonstrates this well. These snakes may well be the same species but are clearly different snakes. This based not only on coloration but also scale row counts, head scalation and ecology. The same can be said for the northern pine snake where not only is there a fair degree of variation of morphometric characteristics but also separation of populations. One thing that has always intrigued me is how long have these populations of pine snakes been isolated from each other. | ||
<< Previous Message: RE: Pituophis sayi??? affinis??? - ginter, Sun Jul 27 14:43:07 2008 | ||
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