Alan Fox
Posts: 1556
Joined: Aug. 2005
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Maybe a dumb question,
But a single cichlid species gets dropped in (via eggs on birds feet or some other improbable but not impossible scenario, presumably) to virgin territory of a new isolated lake. If in the population there was sufficient variation, such that some individuals were better able to exploit bottom feeding and others top feeding, and two species developed accordingly, would this be sympatry or allopatry. It seems to me that the line dividing environments may be a bit fuzzy.
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