Protistology 1 (1) 43–53 (1999)
Resistance of Paramecium species (Ciliophora, Peniculia) to salinity of environment
Alexei O. Smurov and Sergei I. Fokin
Zoological Institute of RAS, and Biological Research Institute of St. Petersburg State University, St. Petersburg, Russia
Summary
The salinity resistance and tolerance of 10 species from the genus Paramecium were investigated. The species investigated could be
divided into groups in according with their resistance. These groups partly corresponded to the classification of the genus proposed earlier on
the basis of morphological features. The ciliates from the "woodruffi" group were more resistant than paramecia from the "aurelia" group.
P. bursaria and P. putrinum (the former "putrinum" group) have lower salinity resistance and tolerance than the species from
two other groups. P. polycaryum has a salinity resistance and tolerance which corresponded to its "intermediate" position between
the "aurelia" and the "woodruffi" groups.
Key words: Paramecium, resistance, salinity, taxonomy, tolerance.
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