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Re: Madagascar snakes and flightless birds?

To: jbois@umd5.umd.edu
Subject: Re: Madagascar snakes and flightless birds?
From: Michael Bruce Habib <mbh3q@virginia.edu>
Date: Tue, 5 Nov 2002 15:02:44 -0500 (Eastern Standard Time)
Cc: dinosaur@usc.edu
In-reply-to: <Pine.OSF.4.21.0211051156180.18747-100000@holmes.umd.edu>
Reply-to: mbh3q@virginia.edu
Sender: owner-dinosaur@usc.edu

> Are there any hypotheses that are more credible than others for these two
> phenomena:
> 1) No venomous snakes


Be careful here: there are venomous snakes in Madagascar, 
they're just all rear-fanged colubrids.  I'm sure you 
realized this already, but the phrasing of the question 
changes the concept a bit.  Models based on migration 
bottlenecks are likely correct here, while selection 
scenarios (eg. venomous snakes don't do well) are not, 
since venomoous forms do just fine.

--Mike

References:
- Madagascar snakes and flightless birds?
  - From: John Bois <jbois@umd5.umd.edu>

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