Carchesium

SESSILE CILIATES

the single zooid is 80 – 140 µm long
Carchesium forms colonies up to 2 mm in size
key feature: “interrupted” muscle in the stalk, i.e. individual zooids can contract independently of each other

IN ACTIVATED SLUDGE AND BIOFILMS:

Carchesium colonies indicate good and stable conditions

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