Ref ID : 3810
Mishima Shoji; Feeding and Mating Reactivity in Paramecium multimicronucleatum. J.Protozool. 25(1):75-76, 1978
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Paramecium multimicronuleatum produced abnormal (L- and delta-shaped) cells when cultivated in the presence of 3 mM adenine. These abnormal cells were unable to form food vacuoles in the presence of bacteria in the culture. In bacteria-rich culture, mating reactivity was not expressed in normal Paramecium; however, it was expressed in the adenine-treated abnormal cells even in the presence of excess bacteria. The expression of mating reactivity in Paramecium was not affected by ingestion of polystyrene latex particles. These results show that the inhibition of mating reactivity in bacterized culture medium is caused by absorption of nutrients from bacteria digested in food vacuoles.