> I've recently found Radix auricularia in eastern Ontario, as detailed
> below, and I'd like to raise up some of the juvenile snails, to see if
> when they grow in an optimal environment if they'll develop a more
> exuberantly "ear-like" morphology than the present specimens exhibit.

As a relatively conspicuous invasive, Radix is a common item in the
one-paragraph notes in early numbers of the Nautilus, but I don't
specifically remember Ontario.

I have an aquarium with thriving lymnaeids.  It has some sediment in
the bottom, by now apparently with thriving bacteria judging by the
different colors visible against the side, a lot of algae, some sticks
and rocks, dead shells, and an aerator.  I occasionally add slightly
aged tap water, old fruits or vegetables, pond water, algae, other
freshwater organisms, etc.  Not much attention.

Genetically, there seems to be quite a complex of Radix species in
Europe, and some purported invasive Radix have turned out to be
Cerasina (south Asian) instead.

--
Dr. David Campbell
425 Scientific Collections
University of Alabama
"I think of my happy condition, surrounded by acres of clams"

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