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Snail species - one or two?

Discussion of everything related to the Theory of Evolution.

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Snail species - one or two?

Postby SirT » Wed Dec 08, 2010 7:58 pm

Hi, just came across a BBC news item about some Japanese snails here:
http://news.bbc.co.uk/earth/hi/earth_ne ... 264808.stm

The question is - why do researches still consider those snails to be the same species? I always thought the classical definition requires them (the snails I mean :) ) to be able to produce a fertile offspring. In this case the snails are not able to cross-breed at all. So why not separate?
SirT
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Postby Darby » Fri Dec 10, 2010 2:19 am

They probably aren't 2 separate populations - it isn't clear whether the coiling trait breeds true or not.
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