rmh392's picture

Juvenile Snail - (From OPALS Discover What Lives in a Hedge Survey).

Observed: 25th September 2011 By: rmh392
S159 Neighbourhood Nature - course complete
rmh392’s reputation in Invertebrates
SANY1435.JPG
Description:

I think this is a juvenile snail which was beaten from a hedgerow into a tray whilst conducting OPALS Discover What Lives In A Hedgerow Survey.

Identifications
Species interactions

No interactions present.

Comments

Martin Harvey's picture

juvenile snail

I agree that this looks like a juvenile snail, but I don't know whether or not it is Arianta. I'm not very knowledgeable about snails, and I can't find any information about what young Arianta looks like and whether it can be confused with any other species. If anyone can shed any light on this I'd be intrigued to find out more.

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Entomologist and biological recorder

martinjohnbishop's picture

Identification of juvenile snails from the shell

Identification of terrestrial juvenile snail shells is important for ecological, archaeological and pleistocene geological studies.

It is fortunate that the whole development of a snail shell remains visible in the adult. To know what a juvenile snail shell looks like you only need to examine larger immature or adult specimens.
The embryonic whorl (the shell possessed when the snail emerged from the egg) is particularly important in this regard. Note the size, shape and texture. It may not be so easy from photographs, but with a suitable reference collection and a stereomicroscope much is possible and the difficulties are well documented.

A good starting point is the work by John G. Evans Land snails in archaeology; with special reference to the British Isles. London, New York, Seminar Press, 1972. xii, 436 p. illus. 24 cm. ISBN: 0128295503