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AuthorRenate A. Helwerda
TitlePredatory Poiretia (Stylommatophora, Oleacinidae) snails: histology and observations
JournalVita Malacologica
KeywordsPredation; predatorysnails; drilling holes; radula; pedal gland; sole gland; acidic mucus
AbstractThe predatory behaviour of Poiretia snails is studied. One
aspect of this behaviour is the ability to make holes in the
shells of prey snails. The radula and the histology of the
mucous glands support the assumption that Poiretia secretes
acidic mucus to produce these holes. Observation of a
Poiretia compressa (Mousson, 1859) specimen yielded the
insight that its activities relied on the availability of moisture
and not on light conditions. It preyed on a wide range of snail
species, but only produced holes in shells when the aperture
was blocked. It usually stabbed its prey with a quick motion
of the radula. The time it spent feeding on a prey specimen is
most likely correlated to prey size.
Document typearticle
Download paperpdf document http://www.repository.naturalis.nl/document/621884