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Table 1 Important species of the Monocercomonadina and Trichomonadina

From: Trichomonadida

Family/Species

Size (μm)

Hosts

Habitat

Pathogenicity

Monocercomonadina

Monocercus ruminantium

12–14

Ruminants

Rumen

M. cuniculi

5–14

Rabbits

Cecum

Histomonas meleagridis

8–20

Chickens, turkeys, ducks, geese

Cecum, liver, other organs

+

Dientamoeba fragilis 1

6–12

Humans

Cecum, colon

?

Trichomonadina

Trichomonas vaginalis

10–30

Humans

Urogenital system

T. tenax (syn. T. buccalis)

6–10

Humans

Mouth

+/−

T. hominis

5–20

Humans

Intestine

T. gallinae

7–20

Chickens, pigeons

Upper digestive tract, liver

+

Tetratrichomonas ovis

6–9

Sheep

Rumen, cecum

Tritrichomonas foetus

10–18

Cattle

Urogenital system

+

T. suis

8–16

Pigs

Intestine

T. equi

8–10

Horses

Cecum, colon

+

Pentatrichomonas hominis

8–20

Humans

Small intestine

P. gallinarum

5–8

Chickens, turkeys, pigeons

Cecum

+

  1. 1Systematic position remains doubtful