On Sun, 10 Mar 2013 10:48:41 -0700, Allen Aigen <[log in to unmask]> wrote:
>Pierre,
a similar study was done (restricted to detailed shell morphology),
although the results probably will not satisfy you. �But you will need to
show why your study is more accurate.�
�
Tursch, B., D. Greifeneder,
and D. Huart, 1998.� A puzzle of highly
multiform species: Oliva fulgurator (Roeding,1798) and related American
taxa.� Apex 13(1-2):1-61.
Allen Aigen
[log in to unmask]
________________________________
From: Pierre Recourt <[log in to unmask]>
To: [log in to unmask]
Sent: Sunday, March 10, 2013 12:48 PM
Subject: [CONCH-L] Revision Caribbean Oliva species - I need
your co-operation
For some years my main interest as an Olividae/Olivellidae specialist is
with the Caribbean Oliva species. It is an extreme difficult puzzle of
which I think to notice the big picture: many different species and
subspecies with large ranges of intraspecific variation.
The strategy is to map out as many known populations as possible. After
that type study (Duclos, Marrat, Petuch&Sargent etc.)and last but not
least dna sequencing in order to confirm or reject the results of the
morphological study.
Without exaggaration, I need to study thousands of lots... Data and/or
material is most welcome! (Bermuda, Jamaica, Mexico, Cuba, etc.). I can
offer Olividae/Olivellidae for exchange or at least pay the shipping
costs.
Thanks in advance!
Pierre Recourt
----------------------------------------------------------------------
[log in to unmask] - a forum for informal discussions on molluscs
To leave this list, click on the following web link:
http://listserv.uga.edu/cgi-bin/wa?SUBED1=conch-l&A=1
Type your email address and name in the appropriate box and
click leave the list.
----------------------------------------------------------------------
Hi Allen,
The morphological measurements done by Tursch&Greifeneder are an
insufficient method to discriminate species and subspecies. Their Oliva
fulgurator, Oliva spicata and Oliva vidua for instance consists of many
different species. Or O.nitidula and O.richerti. The only resenblance is
the
diagonal groove. Everybody with a little knowledge on olives will come to
this conclusion.
Besides that I have about a dozen examples of reliable sympatrism of
Caribbean Oliva species.
I am a great fan of their work, only they unfortunately missed the essence
by using their method. Therefor we have to go back to basics. Proper
definitions of species, subspecies and local variations, literature and
type
study and detailed description of shell characters. All will be no more as
a
preliminary study to stimulate students and scientists to do proper
scientific study based on dna profiles to confirm or reject. Only this
probably will take decades, so we have to do other work in front for the
coming years.
Best regards
Pierre
----------------------------------------------------------------------
[log in to unmask] - a forum for informal discussions on molluscs
To leave this list, click on the following web link:
http://listserv.uga.edu/cgi-bin/wa?SUBED1=conch-l&A=1
Type your email address and name in the appropriate box and
click leave the list.
----------------------------------------------------------------------
|
