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Oligohymenophorea (formerly Nassophorea): Peniculida: Parameciidae

 Paramecium caudatum
Ehrenberg, 1838

Food-vacuole formation

Endocytosis or phagocytosis
Paramecium caudatum food vacuole Genus: Cigar- or foot-shaped; a single macronucleus and 1 to several vesicular or compact micronuclei (Kudo, 1966).
Species: 180-300 μm long; a compact micronucleus; two contractile vacuoles (Kudo, 1966). Cylindrical or cigar-shaped; rounded anteriorly, pointed posteriorly; one large compact micronucleus ("caudatum" group) approximately 8 μm diam.; two contractile vacuoles; 170-290 μm long (Wichterman, 1986). Elongate, rounded anteriorly, pointed posteriorly; caudal cilia present; 180-280 μm long; a single macronucleus with a single micronucleus; two contractile vacuoles (Carey, 1992).
Paramecium caudatum, food-vacuole formation (phagocytosis or endocytosis), cell body 240 μm long, 77 μm wide, x 400, Japan, 1999 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400
Paramecium caudatum, food vacuole Paramecium caudatum, food vacuole Paramecium caudatum, food vacuole Paramecium caudatum, food vacuole
Paramecium caudatum, food vacuole Paramecium caudatum, food vacuole Paramecium caudatum, food vacuole Paramecium caudatum, food vacuole
Paramecium caudatum, food vacuole Paramecium caudatum, food vacuole Paramecium caudatum, food vacuole
Paramecium caudatum, food vacuole Paramecium caudatum, food vacuole Paramecium caudatum, food vacuole
Paramecium caudatum, food vacuole Paramecium caudatum, food vacuole

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