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Updated: Feb 2, 2026

Localized RNAi and Ectopic Gene Expression in the Medicinal Leech
Published on: April 17, 2008
An example of a possible leech-bryozoan association in freshwater
Anna L Klass1,2, Svetlana E Sokolova2, Alexander V Kondakov1,2
1Northern Arctic Federal University, Arkhangelsk, Russia.
Abstract:
Associations of various invertebrate species with bryozoans and sponges are a well-known marine phenomenon but such epizooic communities are far less diverse in freshwater environments. Here an occurrence of numerous leeches Alboglossiphoniacf.papillosa (Braun, 1805), in interstitial spaces between zooids of a colony of the freshwater bryozoan species Plumatellaaff.fungosa (Pallas, 1768) in Eastern Siberia is described. To the best of our knowledge, this record appears to be the first known example of a leech-bryozoan association, although such relationships deserve further research.
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