Food ingestion and egestion in mating reactive populations of Paramecium primaurelia.
The study of food ingestion and egestion carried out on Paramecium primaurelia mating reactive cells shows that, after their transfer into a medium with suspended particles, the complementary mating type cells exhibit very significant differences in the food vacuole formation and egestion rate. Under the same external environmental conditions, the mating type II cells form and egest a higher number of food vacuoles when compared with mating type I cells. The higher rate of food vacuole formation shown by the mating type II cells is related to their faster growth rate.
Ramoino
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Istituto di Zoologia, Università di Genova.
D000818:Animals; D002329:Carmine; D004435:Eating; D007425:Intracellular Membranes / Q000378:metabolism; D007840:Latex; D008863:Microspheres; D010247:Paramecium / Q000502:physiology*; D012098:Reproduction; D014617:Vacuoles
D007840:Latex; D002329:Carmine