Hi Tom & al,
Would you have any information about where (exactly) Theodoxus fluviatilis has been found in Finland?
I have searched for information about brackish water and marine molluscan species which occur in Finland but I haven't found any information about them from the Internet yet.
Finland is not listed in any of the species descriptions in www.gastropods.com. And it is not listed in localities on most of the shell dealers' web sites.
Has any of you seen any marine gastropods or bivalves which are collected in Finland?
I live near the gulf of Bothnia in Central Finland.
The salinity and the content of chalk are so slow in this area and in the Baltic Sea so these conditions are quite bad for marine species.
Best regards, Markus Niiranen
----------------------------------------
> Date: Tue, 3 Jun 2008 11:12:10 -0600
> From: [log in to unmask]
> Subject: Re: [CONCH-L] Theodoxus in Turkey, was Cypraea in Norway...
> To: [log in to unmask]
>
> Dear Ümit,
>
> I do not have your email address, but if you would write me off-list at:
> [log in to unmask] I would like to discuss the distribution of Theodoxus in
> Turkey. It would be great to get this information from someone who really
> knows. Thanks,
>
> Tom Eichhorst
>
> -----Original Message-----
> From: Conchologists List [mailto:[log in to unmask]]On Behalf Of Umit
> Kebapçi
> Sent: Monday, June 02, 2008 12:55 PM
> To: [log in to unmask]
> Subject: [CONCH-L] Theodoxus in Turkey, was Cypraea in Norway...
>
>
> Talking about Turkey...
>
> Theodoxus altenai is a narrow (inland) endemic of SW Anatolia, like Th.
> heldreichi differing in having a broader distribution in lakes. The commoner
> is Th. anatolicus occurring sympatrically with nearly all Theoduxus in S
> Turkey, including T. fluvitilis occurring exclusively (but frequently)
> within
> the proximity of the sea and (some) connected streams there, a gift of
> glacial
> ages maybe.
>
> Ümit KEBAPÇI
>
> Alıntı yapılıyor Thomas Eichhorst <[log in to unmask]>:
>
> > Hey Andrew,
> >
> > Erik has it correctly, only Theodoxus fluviatilis (Linnaeus, 1758) is
> > known
> > to occur that far north. It is widespread throughout Europe from the
> > British
> > Isles and Spain to the Caucasus and the Black Sea, and from the Baltic
> > Sea
> > to Italy. It is reported from Turkey, but these findings are probably
> > the
> > very similar Theodoxus heldreichi (von Martens, 1879) or Theodoxus
> > altenai
> > Schutt, 1965, both from that area. As for its northern limits, it has
> > been
> > found in Denmark, as well as the southern portions of Sweden and even
> > Finland. It is found in marine, brackish, and freshwater; and was in
> > fact
> > given three separate names by Linnaeus depending upon its habitat:
> > Nerita
> > fluviatilis in the rivers of Europe (Latin fluviatilis = found in
> > rivers),
> > Nerita lacustris Linnaeus, 1758 in lakes (Latin lacus = tank, pool,
> > reservoir, or lake), and Nerita littoralis (Linnaeus, 1767) along the
> > seashore (Latin littoralis = of the shore). Unlike some other nerites
> > that
> > exist in both salt and \"fresh\" water, Theodoxus fluviatilis will not
> > survive
> > if moved from one extreme to the other. An amazing little snail.
> >
> > Tom Eichhorst
> >
> > -----Original Message-----
> > From: Conchologists List [mailto:[log in to unmask]]On Behalf Of
> > Kay Lavalier
> > Sent: Sunday, June 01, 2008 6:24 AM
> > To: [log in to unmask]
> > Subject: Re: [CONCH-L] Cypraea in Norway; Theodoxus in Denmark
> >
> >
> > Thanks, Tom
> >
> > All of the specimens, plain yellow or banded,
> >
> > have white columella and lip, so I will stick
> >
> > with C. hortensis for I.D.
> >
> > I have another question that is right up
> >
> > your alley: what are the species candidates
> >
> > for Theodoxus found in Denmark? I found
> >
> > two small black nerites, oblong in profile,
> >
> > with apparently a shelly white operc.,
> >
> > no noticeable surface sculpture.
> >
> > I will have to \"de-mummify\" them
> >
> > to get a better look at the opercs.
> >
> > I found them in Roskilde, not far
> >
> > from the Vikingeskibsmuseet
> >
> > (Viking Ship Museum).
> >
> > I had thought that this was on a long,
> >
> > shallow bay, but looking at the map now,
> >
> > it was probably a brackish lake/lagoon.
> >
> > Yours, Andrew Vik
> >
> >
> > > [Original Message]
> > > From: Thomas Eichhorst <[log in to unmask]>
> > > To: <[log in to unmask]>
> > > Date: 5/31/2008 2:35:32 PM
> > > Subject: Re: [CONCH-L] Cypraea in Norway
> > >
> > > Hey Andrew,
> > >
> > > Cepaea nemoralis can be found in some pretty northerly climes, and it
> > can
> > be
> > > mistaken for C. hortensis. I think the easiest \"tell\" is the
> > light-colored
> > > columella of C. hortensis and the brown lip of C. nemoralis. I am
> > sure
> > some
> > > of our land snail experts can easily help out if they can see an image
> > of
> > > the shell in question.
> > >
> > > Tom Eichhorst
> > >
> >
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>
>
>
> Ümit Kebapçı
> Süleyman Demirel Üniversitesi
> Fen-Edebiyat Fakültesi, Biyoloji Bölümü
> Çünür, ISPARTA
>
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