[Taxacom] Phylogenetic classification?

[Michael Heads]

Dear Geoff and colleagues,
 
I don't conflate founder dispersal and founder effect speciation - the phylogeographers themselves do! For example, Teske et al. (in the paper you cited) write: 'Founder dispersal (i.e. long-distance dispersal followed by founder effect speciation)'.
    Without founder effect speciation you can still maintain founder dispersal with the 'artificial life support' of other ad hoc hypotheses but it starts to get very complicated. This is why Mayr felt the necessity of invoking the completely theoretical process of founder effect speciation in the first place. 
 
Michael   


Wellington, New Zealand.

My papers on biogeography are at: http://tiny.cc/RiUE0

--- On Thu, 8/6/09, Geoffrey Read <gread at actrix.gen.nz> wrote:


From: Geoffrey Read <gread at actrix.gen.nz>
Subject: Re: [Taxacom] Phylogenetic classification?
To: taxacom at mailman.nhm.ku.edu
Date: Thursday, August 6, 2009, 8:28 AM



On Wed, August 5, 2009 10:33 pm, Michael Heads wrote:
> Dear Geoff and colleagues,
>
> I should clarify this. Nearly all phylogeographers follow traditional
> biogeography and invoke 'dispersal', i.e. founder effect speciation, all
the time.

Michael, it is the subsuming or conflation of founder dispersal speciation
into simply 'founder effect' then dismissing it (via the geneticists
evidence) that I wanted to draw attention to regarding your presentations
of your argument.  Exactly as you've done again above. They're two
different boxes, surely.

> But they are simply inferring it from the distributions and a
> phylogeny. Population geneticists are a different breed altogether and look
> in detail at mechanisms of the speciation process per se, including lab
> experiments, small-scale population sudies, etc. These are the ones I was
> referring to (e.g. Coyne & Orr's book Speciation which summarises this
work).

Good. Well I might take comfort from the noting that "some experimental
populations develop a small level of reproductive isolation"

Cheers,

Geoff


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