03 - Amoebae, Trichomonads, Histomonads Flashcards Preview

004 - parasitology 2 > 03 - Amoebae, Trichomonads, Histomonads > Flashcards

Flashcards in 03 - Amoebae, Trichomonads, Histomonads Deck (21):
1

(Entamoeba Invadens)

1. causative agent of amebiasis in what?

2. get anorexia, weight loss, blood

1. reptiles

(similar to E. histolytica)

 

2

(Pathogenic Free-Living Amoeba)

(Naegleria and Acanthamoeba)

1. in soil, water, sewage

2. what kind of parasites?

(Acanthamoeba)

3. most common amoeba of freshwater and soil

4. can enter how?

(Naegleria)

5. also in water

resistant to heat

infect humans, dogs, sheep

CAN CAUSE WHAT?

2. facultative

4. via CNS if immunocompromised or broken skin (more often - contact lenses)

5. primary amoebic meningoencephalitis

(trophozoites enter nasal passages and get into brain)

figure out at autopsy

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4

(Trichomonads)

give the animal for each

1. tritrichomonas foetus

2. tritrichomonas gallinae

3. tritrichomonas vaginalis

4. tetratrichomonas gallinarum

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5

(Tritrichomonas foetus)

1. in what animal?

2. hangs out where?

3. what has reduced incidence?

1. cattle

2. repro (sheath in male)

3. AI

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6

(Tritrichomonas Foetus)

1. multiply how?

2. tranmission?

3. what happens in bull?

4. in female?

1. binary fission (no cysts)

2. sex/ai

(bulls permanently infected)

(females can self cure or bcome carriers)

3. nothing

4. enodometritis/abortion (can lead to sterility if severe)

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NO ADEQUATE TREATMENT!!!

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10

1. tritrichomonas foetus has recently moved to what host?

1. Cats

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11

(tritrichomonas foetues in cats)

1. is it repsonsive to Rx?

1. no!

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12

(Trichomonas Gallinae)

1. parasite of what?

2. hosts?

3. do pigeons show evidence of infection?

4. passed via what?

1. mouth, esophagus, and crop of birds

2. pigeons, morning doves

raptors which feed on these

sometimes chickens and turkeys

3. no

4. pigeon milk

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15

(Tetratrichomonoas Gallinarum)

1. parasite of what?

2. where at?

3. transmission?

1. lower instestine of galliform (chicken family) birds

2. cosmopolitan

3. fecal/oral

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16

(Trichomonas Vaginalis)

1. infects what?

2. how transmitted?

 

1. humans

2. sexually

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17

do wee see trichomonads in reptiles?

yes (iguana for example)

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18

(Histomonas Meleagradis)

1. causative agent of what?

1. blackhead in turkeys/chickens (head becomes blue - cyanotic)

(very importatn to turkey industry)

19

(Histomonas Meleagradis)

1. defeinitive Hosts?

2. intermediate?

3. transport?

4. distribution in worldwide

5. reproduce how?

6. turkeys may be infected by ingesting  histomonads in fresh feces.... what is principal transmission?

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1. gallinaceous birds

(turkeys, chukkar partridge, ruff grouse severely affected --- chickens, peafowl, guinea hens, pheasants often asymptomatic)

3. cecal worm (Heterakis gallinarum)

3. earthworm, flies, grasshoppers, sowbugs, crickets

5. binary fission

6. ingesting histomonas infected eggs of heterakis gallinarum

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21

(Pathogensis)

1. how do they get into liver?

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1. invade wall of cecum, produce lesions and pass to liver via blood stream

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22

(clincial signs)

1. what colored droppings?

2. head becomes what?

(Diagnosis)

1. history, signs and lesions

2. microscopic identification of organisms

 

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1. sulfur

2. cyanotic

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23

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