NFC: Re: Re: trumpet snails & snail predation in general

["Paul Sachs" <deano at aquaculturestore_com>]

Are their mouth parts different you suppose?

>Mexico (the well-known Cuatro Cienegas), where several fish morphs have
>evolved for specialized feeding on either snails or fishes

Paul

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----- Original Message -----
From: "Matt Berg" <mdb6850 at tamug_tamu.edu>
To: <nfc at actwin_com>
Sent: Friday, April 12, 2002 11:09 AM
Subject: NFC: Re: trumpet snails & snail predation in general


> I've had native Texas cichlids H. cyanoguttatum from the southern part of
> the state chowing on Physa snails, mostly by inhaling them, working them
> over, and spitting the shells out. There is a fascinating behavior
> relationship between the closely related H. minckleyi cichlid group from
> Mexico (the well-known Cuatro Cienegas), where several fish morphs have
> evolved for specialized feeding on either snails or fishes.
> Matt
>
>
> ----- Original Message -----
> From: Thomas DeWitt <tdewitt at tamu_edu>
> To: <nfc at actwin_com>
> Sent: Friday, April 12, 2002 9:06 AM
> Subject: NFC: trumpet snails & snail predation in general
>
>
> > Luke,
> > Interesting observations on the orangethroats!  Did you notice how the
> darters eat snails.  I'm curious as to whether they swallow the shells
> whole, crushed them or used suction feeding to suck the snail from the
> shells.  Are some darters better than others at snailivory.
> >
> > While we're at it, I'm interested to know what other natives have been
> observed eating snails in aquaria, and what means they use.
> >
> > This has important implications for the evolution of prey defenses, both
> behavioral or morphological.
> >
> > Thom
> >
> >
> > >>> mcclurgl at washburn_edu 04/12/02 01:05AM >>>
> >
> > I had three tanks that were over run with them.  I put in a half dozen
> > orangethroat darters into each and six weeks later, no malaysian snails.
> >
> > Luke
> >
> >
> > On Thu, 11 Apr 2002, Mark wrote:
> >
> > > I have found the Malaysian burrowing trumpet snails to be next to
> > > impossible to eradicate from your gravel once they are established.
The
> > > trap door allows them to wait out most chemical treatments, and the
hard
> > > shells and burrowing make them innacessible to predatory fishes.  So
> don't
> > > get them unless you want to keep them!
> > >
> > > Mark
> > > Columbus Ohio USA            <))><
> > > mbinkley at columbus_rr.com
> > >
> > >
> > >
> >
> >
> >