Jill Moss's picture

PATTERNS MADE BY INVERTEBRATE

Observed: 7th April 2013 By: Jill Moss
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Description:

I noticed this delicate pattern on the side of an enamel bowl,in our garden. Initially I thought it must be footprints left by a slug or snail , but realise it is more likely to be imprints left by an invertebrate feeding on the algae that covered the sides of the bowl - but which invertebrate?

Identifications
Species interactions

No interactions present.

Species with which snail or slug (Mollusca) interacts

Comments

dejayM's picture

slug too...

Jill, a very nice observation and, once again, so nice to see description notes.
See here http://snailstales.blogspot.co.uk/2011/09/pickup-for-slugs.html
ðj

markwilson's picture

feeding

Many molluscs have rasping "teeth" that produce this form of pattern on a film of algae etc. You can often see limpet grazing trails on algae on the sea shore

dejayM's picture

change...

More Jill
http://www.newscientist.com/blog/lastword/2007/11/on-trail.html - an old New Scientist.
"The distinctive pattern made by the rasping of gastropod radulae.."
If you change the ID (add an ID) to 'Mollusc Grazing marks' you may get some agreements.
I believe it may be possible to ID the species from the pattern - but I wouldn't bother!
It's far good enough for a first post!
Derek
.............
I now see that Dave Notton has done that for you.