Ciliates

Balantidium coli

• Intestional disturbance
• Ingest cyst stage
• Common parasite of pigs and monkeys

Cilates

Balantidium coli - troph

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Troph

• Size: 50-200 μm oval,ciliated
• Cytoplasm: contractile vacuoles,food,moves rapidly
• Nucleus: 2 - one large kidney shaped macronucleus and one small micronucleus

Ciliates

Balantidium coli-cyst

[image]

Cyst

• Size: 50-70 μm
• May see cilia (cell wall surrounds,hard to see)
• May see both nuclei

Flagellates

Retortamonas intestinalis

• Non pathogen
• Found in intestine
• Resembles Chilomastix sp

Troph

• Size: 4-9 μm by 3-4 μm,oval to pear shaped

Cyst

• Size: 5-7 μm(size of yeast), One nucleus

Flagellates-Enteromonas hominis

• Non pathogen
• Found in intestine
• Resembles Endolimax nana

Troph

Size: 4-10 μm by 3-6 μm, pear shaped

Cyst

Size: 6-8 μm by 4-6 μm (large yeast)

1-4 nuclei

Flagellates-Trichomonas

3 species

 Trophozoite stage only, no cyst stage

T hominis: large intestine, non pathogen

T tenax: mouth, usually non pathogen

T vaginalis: genital tract

females(vaginitis)

males(prostatitis)

T hominis:  full length

T tenax:  3/4 length

T vaginalis:  1/2 length

Trichomonas vaginalis

[image]

• Transmitted sexually
• Occasional neonate(female) infected at birth
• Females: produces a persistent vaginintis
• Males : nfects urethra,prostate,epididymis

Chilomastix mesnili

Non pathogen

Found in the intestine