Our results
support the suggestions of Sirová et al. (2009, 2010) and Alkhalaf
et al. (2009) about the role of the microbial commensal community
and ciliates in Utricularia traps, but do not support Mette et al.’s
(2000) statement that ciliates are prey for aquatic Utricularia. In
regard to ciliates, our results differ from those of Peroutka et al.
(2008), who observed only a low proportion of protozoa (3.2%) in
traps in naturally grown Utricularia species and considered them
prey.