Pleuronema

ciliate genus

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July 1, 2026

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Pleuronema is a genus of holotrichous ciliates, which are single-celled protozoa. These organisms are found in both freshwater and saltwater environments. They have an ovoid body shape and possess a distinctive folding undulating membrane. In some species, like those within the hymenostome order, this membrane is significantly enlarged and functions as a saclike food scoop. Hymenostomes, as a group, are characterized by a ventral mouth cavity lined with fused cilia and an undulating membrane.12

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hymenostome
In the genus Pleuronema the membrane is greatly enlarged to form a saclike food scoop. The order also contains parasites, such as the genus Ichthyophthirius, which attacks the skin of freshwater and aquarium fishes. The numerous, mostly marine species now known as the scuticociliates are classified here as…
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In the genus Pleuronema the membrane is greatly enlarged to form a saclike food scoop. The order also contains parasites, such as the genus Ichthyophthirius, which attacks the skin of freshwater and aquarium fishes. The numerous, mostly marine species now known as the scuticociliates are classified here as…
Read More