[Taxacom] London - Systematics Association Lecture and AGM, 9thDec

Stephen Thorpe s.thorpe at auckland.ac.nz
Thu Dec 3 20:38:34 CST 2009


Even today, the common assumption that 'the greater the morphological and/or genetic differences between two taxa, the further back the divergence between them' is residual gradualism...

________________________________________
From: taxacom-bounces at mailman.nhm.ku.edu [taxacom-bounces at mailman.nhm.ku.edu] On Behalf Of Robin Leech [releech at telus.net]
Sent: Friday, 4 December 2009 3:26 p.m.
To: mivie at montana.edu; John Grehan
Cc: taxacom at mailman.nhm.ku.edu
Subject: Re: [Taxacom] London - Systematics Association Lecture and AGM,        9thDec

Mike, you must understand that his geologist mentor, Lyell, and many others
of his day all thought things occurred gradually.  Nothing happened
suddenly.
Robin
----- Original Message -----
From: <mivie at montana.edu>
To: "John Grehan" <jgrehan at sciencebuff.org>
Cc: <taxacom at mailman.nhm.ku.edu>
Sent: Thursday, December 03, 2009 10:41 AM
Subject: Re: [Taxacom] London - Systematics Association Lecture and AGM,
9thDec


>> Darwin's biggest mistake was in his failure to recognize biogeographic
>> patterns as historically informative. Against that, his gradualism
>> (which lies at the core of molecular clock systematics) is just a
>> sideshow.
>
> While I agree that Darwin did not use biogeography directly, the fact that
> the final few nails he needed came from Wallace provides some cover, as
> Wallace certainly used biogeographic pattern to formulate his theory of
> evolution.  His Sarawak Law paper, and his letter to Darwin are both
> nearly totally dependent on biogeographic pattern.
>
> Mike
>
>
>>
>> John Grehan
>>
>>> -----Original Message-----
>>> From: taxacom-bounces at mailman.nhm.ku.edu [mailto:taxacom-
>>> bounces at mailman.nhm.ku.edu] On Behalf Of James Cotton
>>> Sent: Thursday, December 03, 2009 7:52 AM
>>> To: taxacom at mailman.nhm.ku.edu
>>> Subject: [Taxacom] London - Systematics Association Lecture and AGM,
>>> 9thDec
>>>
>>> The Systematics Association
>>> Annual General Meeting and President's lecture
>>>
>>> Gradualism: Darwin's biggest mistake?
>>>
>>> Prof. Richard Bateman - Royal Botanic Gardens, Kew and University of
>>> Birmingham
>>>
>>> The Linnean Society, Burlington House, Piccadilly, London
>>> Wednesday 9th December 2009, 6 pm (following AGM at 5pm)
>>>
>>> The meeting is open to visitors. Wine will be served after the lecture
>>> to members and guests. Please advertise this lecture as widely as you
>>> can.
>>> The associations' AGM will be held before the lecture at 5pm.
>>>
>>> Abstract: Although Darwin's many achievements have been justly lauded
>>> worldwide during 2009, his repeated assertions that all evolutionary
>>> change
>>> is imperceptibly gradual have escaped serious criticism from modern
>>> commentators. The evidence that gradual change results in speciation
>> is
>>> circumstantial in even the best documented cases, and usually relies
>> on
>>> inadequate assessments of fitness. In contrast, saltational mechanisms
>>> requiring that radical and instantaneous phenotypic change leads
>>> directly to
>>> de facto speciation are still widely ridiculed in most biological
>>> constituencies, despite accumulating evidence of their viability. This
>>> lecture aims to redress the balance between gradual and non-gradual
>>> evolutionary change.
>>> _____________________________________________
>>> James Cotton
>>> School of Biological and Chemical Sciences
>>> Queen Mary, University of London
>>> +44 (0)207 882 3645
>>> j.a.cotton at qmul.ac.uk
>>> http://webspace.qmul.ac.uk/jacotton/index.html
>>> http://www.sbcs.qmul.ac.uk/staff/jamescotton.html
>>> _____________________________________________
>>>
>>>
>>>
>>>
>>>
>>> _______________________________________________
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>
>
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