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This is a field sample of the monogonate rotifer Cephalodella sp. that shows several behavioral features including crawling and swimming motion, and bowing and sweeping behavior for ingestion of biofilm material. Rarely observed features such as buccal cilia around the mouth and muscle bands are also shown using slow motion video recording. Cephalodella is a rotifer of the poorly defined family Notommatidae (3).  Their preferred environment is a solid substrate (5) and maximum abundance for most species is neutral or acidic freshwater (1), consistent with harvest of this specimen in New Jersey where freshwater is usually slightly acidic (2).

Figure 1: The rotifer Cephalodella (video).

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