Hello all,
I tried to add my contribution containing two pictures of two South African Cowries. C. edentula. One is sinistral. Both collected Jeffreys Bay. I found pictures are refused by the server. I can send pictures by email or place them on facebook.
Regards Hans Post
Allen Aigen <[log in to unmask]> schreef :
> Harry, or other experts!This brings up the question of why? Does the very restricted opening of a cowrie shell prevent mating between left handed and right handed forms, thus dooming the extremely rare spontaneously generated (mutated?) sinistral genes? Do we even have enough biological information to make a good guess?Allen Aigen From: Moshe Erlendur Okon <[log in to unmask]> To: [log in to unmask] Sent: Wednesday, March 30, 2016 10:18 AM Subject: Re: [CONCH-L] was [CONCH-L] second try: 1967 Keppel Bay Tidings newsletter needed; now need fulfilled Indeed, Harry.Bill Fenzan kindly sent me both the article and the images I needed.Incidentally, regarding your 2010 article you mentioned, I think that by omitting part of the text, you may have presented Schilder’s statement (in his 1964 article) as much more decisive than
> actually meant. What Schilder had written was:
> “In cowries sinistral specimens are extremely rare, if indeed they occur at
> all… But I think
> that nobody will find a sinistral cowrie.”Based on his handling of over
> 150,000 specimens over his forty four years of research, Schilder’s skepticism
> can easily be understood.Moshe Erlendur
>
>
>
>
>
> On Wed, Mar 30, 2016 at 3:26 PM, Harry Lee <[log in to unmask]> wrote:
>
> Dear Derrick,
> I believe Moshe has found the figure through the kind agency of Bill
> Fenzan
> <
> https://listserv.uga.edu/cgi-bin/wa?A2=CONCH-L;cbcf9941.1603d>,
> but I believe it was a few issues later than the one he cited, to
> wit:
> "Apparently, the gauntlet was never retrieved by Griffiths, but it
> didn’t take long for Schilder’s pervasive prediction to be repudiated by
> a fellow Aussie. Early in 1967, Jack Aitken took a sinistral Bistolida
> brevidentata brevidentata (G.B. Sowerby II, 1870) off Tryon Island,
> Capricorn Group, Queensland, Australia. It was reported in the
> 9/67 Keppel Bay Tidings and illustrated in the 12/67
> number of that periodical accompanied by a Don Byrne photo. Mrs. Val
> Harris of Caloundra, Qld., the second owner, sold it to Luigi Raybaudi
> Massilia of Rome, Italy, in 1976 (Harris, personal communication, 23 May,
> 1980; Raybaudi, 1987: 2 color figs.), and it has changed hands at least
> twice since then. Despite its present obscurity, the shell, or at least
> the two sets of its photographic images, has left its imprint in the
> annals of conchology" [Lee, 2010: 6; my boldface].
> Lee, H.G., 2010. Absence of evidence is not evidence of absence, or never
> say “never.” American Conchologist 38(3): 6-9. September.
> <
> http://www.conchologistsofamerica.org/publications/pdfs/201007.pdf
> >
> Harry
>
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