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The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Ref ID : 4867

Mercedes Martin-Cereceda, Susana Serrano, and Almudena Guinea; Occurrence of Acineria uncinata in Activated Sludge Plants: Morphology and Relationship with Physico-Chemical Plant Parameters. Arch.Protistenk 146:79-84, 1995

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Acineria uncinata is a common species in the protozoan communities of the activated sludge plants from Madrid Community (Spain). It appears on the floc surface as a small lanceolate ciliate with a characteristic overlapping at the anterior area of the cell. The infraciliature of this species, investigated by silver impregnation and scanning electron microscopy, is composed of seven kineties with different arrangement at both sides of the cell, and a dorsal kinetal segment. The abundance of A. uncinata has been related with the physico-chemical and operational parameters. Correlation analysis showed that A. uncinata can be considered as an indicator of deficient sludge settlement conditions.