RE: species flock -Reply -Reply

["Griffiths, Richard" <rgriffit@visa.com>]

Depending upon when apisto's may have 'speciated', the current Amazon basis
was supposedly a huge lake in the past (more like an inland sea). Though I
don't think you can consider them, ever, to have been a species flock
because of their behaviour difference to a true flock nature, it may be that
interesting changes may have occurred back then. But I suspect that they are
a much more recent evolutionary experience than the Amazonian lake issue.

> ----------
> From: 	William Vannerson[SMTP:William_Vannerson@ama-assn.org]
> Sent: 	Tuesday, November 10, 1998 2:10 PM
> To: 	apisto@majordomo.pobox.com
> Subject: 	Re: species flock -Reply -Reply
> 
> >>does this mean that Lake Malawi was split up and then fused again to
> form one continous body of water?<<
> 
> Good question.  I do know that at least Lake Malawi or Lake Tanganyika
> did recede to form two separate lakes then fill up to be a single body of
> water.  I'm pretty sure it was Malawi but it could have been the other or
> both.  I read it in a book by Ad Konning.
> 
> To carry the analogy to SA and Apistos, I know that the SA continent
> has had large lakes and seas recede as well as different rivers altering
> courses.  These geological events could produce "flocks" similar to the
> African cichlids.  Even for Apisto species that currently are not part of
> the same river courses.
> 
> Again, this would be a yfascinating graduate study topic for any
> students lurking on the list.  hint. hint. ;-)
> 
> 
> 
> Bill Vannerson
> http://ourworld.compuserve.com/homepages/william_vannerson
> 
> 
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