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From: 6065833@pucc.UUCP
Newsgroups: sci.bio
Subject: wrap-around animal species
Message-ID: <2056@PUCC.PRINCETON.EDU>
Date: Tue, 24-Mar-87 09:56:11 EST
Article-I.D.: PUCC.2056
Posted: Tue Mar 24 09:56:11 1987
Date-Received: Thu, 26-Mar-87 07:24:13 EST
Reply-To: 6065833@PUCC.PRINCETON.EDU
Organization: Princeton University - Computing and Information Technology
Lines: 8
Disclaimer: Author bears full responsibility for contents of this article

In response to the question about whether open rings of interbreeding
animal species exist, I know of one case not yet mentioned.  There are
a group of (garden?) snakes in the SE US, excluding Florida, forming a
continuous population of 5 or so discrete varieties which interbreed,
except in the west of the range.  Here the 2 "end-point" varieties do
not interbreed.
 
Una Smith (6065833@PUCC.bitnet)