Received: by alpheratz.cpm.aca.mmu.ac.uk id QAA18051 (8.6.9/5.3[ref pg@gmsl.co.uk] for cpm.aca.mmu.ac.uk from fmb-bounces@mmu.ac.uk); Fri, 31 Aug 2001 16:45:26 +0100 X-Originating-IP: [209.240.220.143] From: "Scott Chase" <ecphoric@hotmail.com> To: memetics@mmu.ac.uk Subject: RE: Misunderstood Cichlids Date: Fri, 31 Aug 2001 11:42:54 -0400 Content-Type: text/plain; format=flowed Message-ID: <F2662u4hadSyXqZ9Lmy00001af6@hotmail.com> X-OriginalArrivalTime: 31 Aug 2001 15:42:54.0434 (UTC) FILETIME=[9992CC20:01C13233] Sender: fmb-bounces@mmu.ac.uk Precedence: bulk Reply-To: memetics@mmu.ac.uk
>From: "Wade T.Smith" <wade_smith@harvard.edu>
>Reply-To: memetics@mmu.ac.uk
>To: "memetics list" <memetics@mmu.ac.uk>
>Subject: RE: Misunderstood Cichlids
>Date: Fri, 31 Aug 2001 08:33:09 -0400
>
>On 08/31/01 06:04, Vincent Campbell said this-
>
> >Indeed, it seems to me that cichlids offer more problems for MR because
>of
> >the rapid rate of speciation- where are all the past images of the
>multitude
> >of new species to have appeared, particularly those that have emerged in
> >recently isolated stretches of lake?
>
>MR, like Photoshop, is constantly upgrading its selection of filters and
>effects.
>
>
Maybe the cichlids are quick studies, their rapid rates of speciational
evolution a testament to fast learning, not unlike cramming for an exam,
except that the crammers resonate amongst themselves.
Since isolation is related to speciation, we may have a slight problem. A
population may become physically isolated from another of the same species
by a geographical barrier, but as MR theory claims there is spooky action at
a distance. This action at a distance, if it can influence crystal growth
and rodent learning in locales far removed, shouldn't have much problem
jumping across a wimpy little geographical barrier. Wouldn't resonance and
formative causation run counter to geographical isolation? Why would local
demes diverge from those similar to them yet geographically isolated?
The separated populations will, especially if small in effective size, be
skewed samples of the original larger population and genetic drift would
foster a genetic rift. Selection would adapt them to their local conditions
and if these conditions are similar in some respects, the adaptations of the
speciating subpopulations will converge or parallel in these respects. Where
would resonance come into the picture? In the respects where the local
conditions differ selection would result in a divergence of correlated
features of the phenotypes of the repective subpopulations. Of course, drift
itself or some sort of founder effect would also have played a part in
divergence from the original population.
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