Dear Patrice,
A puzzler indeed. I believe this species can be
found offshore all the way N to Cape Hatteras. It
certainly can be easily found off extreme NE FL outside the 15 fathom isobath.
While it may be difficult to find authentic TX
records, offhand, I don't know of any
zoogeographic barrier, including ocean currents,
between Gulf of Campeche and TX.. However, the
lack of a free-swimming veliger may put a damper such dispersal.
Take two aspirin, and call me in the morning (I'm a doctor),
Harry
At 04:45 AM 11/11/2015, Patrice BAIL wrote:
>Hi Emilio and John,
>The Mississippi delta is a natural biological
>barrier, almost impossible to cross for species
>at direct development and living in relatively
>clean waters such Volutidae. If a Texas
>population exists, the genetic exchange with the
>Florida/Alabama populations must be rare, and
>the genetic drift between them shall lead (in
>theory of course!) to obvious differences…That's why I open the question.
>In fact, it seems that we have two populations
>only: the Florida/Alabama and the Yucatan, each
>populations having their own variants.
>Genus Scaphella is a true puzzle and the
>researcher needs aspirin to continue..
>
>Patrice Bail
>2 square La Fontaine 75016 Paris
>Tel:+33(1)45253330
>Mob:+33(6)32692180
>
>
>
>
>
>
> > Le 11 nov. 2015 Ã 01:12, Emilio F Garcia
> <[log in to unmask]> a écrit :
> >
> > Hi John,
> >
> > Good to hear from you. I am sure that the S.
> junonia from Mexico come from Yucatán, a well-known locality.
> >
> > I think that Pat Bail wants reliable data on
> Scaphella junonia from Texas. Although
> Encyclopedia of Texas Seashells has it listed,
> the data is not-at-all reliable. I am one of
> the authors for the huge Texas A & M
> publication on the Gulf of Mexico biota of
> which you speak; however, we did not include
> Texas in the geographic distribution of S.
> junonia because we are yet to find reliable data.
> >
> > Cordially,
> >
> > Emilio
> >
> > ----- Original Message -----
> > From: [log in to unmask]
> > To: [log in to unmask]
> > Sent: Tuesday, November 10, 2015 4:53:49 PM
> > Subject: Re: [CONCH-L] Scaphella juniona
> >
> > Dear Emilio,
> >
> > The shell auction site shellauction.net had three S. junonia from
> > Mexico offered for sale in the last auction. Maybe Pat would like to
> > look there for data? I cannot vouch for the accuracy.
> >
> > John
> >
> > ----- Original Message -----
> > From: "Conchologists List" <[log in to unmask]>
> > To:<[log in to unmask]>
> > Cc:
> > Sent:Tue, 10 Nov 2015 12:38:07 -0600
> > Subject:Re: [CONCH-L] Scaphella juniona
> >
> > Hi Pat,
> >
> > I have never collected Scaphella junonia in Texas. The farthest west
> > was one specimen at 28º00.86'N, 92º27,56"W, which is still
> > Louisiana. It has a very interesting orange coloration (i.e., S. j.
> > form johnstoneae to the max) but it was collected dead. I will be glad
> > to send you an image if you think it will be of interest.
> >
> > Emilio
> >
> > ----- Original Message -----
> > From: "Patrice BAIL" <[log in to unmask]>
> > To: [log in to unmask]
> > Sent: Tuesday, November 10, 2015 10:34:02 AM
> > Subject: [CONCH-L] Scaphella juniona
> >
> > Hi Volutist fellows,
> > Are they reliable records of Scaphella juniona living in the Texas
> > and east Louisiana waters?
> > In the other way, does it cross through the Mississipi delta ?
> > Thanks. If this eastern population exists, photos of specimens will
> > be highly appreciated.
> > Patrice Bail
> > 2 square La Fontaine 75016 Paris
> > Tel:+33(1)45253330
> > Mob:+33(6)32692180
> >
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