Practical 5 Flashcards

1
Q

How many times do the nematodes moult during their

ontogenic development?

A

4

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2
Q

What is the name of the expanded chitinous mouthpart of the nematodes?

A

Buccal capsule

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3
Q

Eggs of gastro-intestinal worms are:

A

Thin-shelled

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4
Q

What term is correct for the nematodes?

A

Sexes usually are separated

They’re covered by cuticle

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5
Q

What organ can be the part of the body of nematodes?

A

Speculum
Bursa copulatrix
Uterus

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6
Q

How long in the pre-patent period of the gastro-intestinal worms usually?

A

3 weeks

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7
Q

Which species develop directly?

A

Hyostrongylis rubidus
Amidostonum anseris
Ostertagia ostertag

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8
Q

What is the Latin name of red stomach worm?

A

Hyostrongylus rubidus

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9
Q

What causes croupos-diphtheritic gastritis?

A

Hyostrongylus rubidus

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10
Q

Which adult worm is the smallest (min. size)?

A

Hyostrongylus rubidus

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11
Q

What is the cell stage of Hyostrongylus egg in vomitus?

A

4-8 cell stage

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12
Q

What is the correct term that characterize the Hyostrongylus worms?

A

Reddish body

Small cephalic vesicle

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13
Q

What is the infective stage of Hyostrongylus rubidus?

A

L3 infective larvae

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14
Q

What is the Latin name of gizzard worm?

A

Amidostomum anseris

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15
Q

Which adult worm is the largest (max. size)?

A

Amidostomum anseris

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16
Q

Gizzard worms effect:

A

Goslings, ducklings, young aquatic fowls

17
Q

What is the most important host of Haemonchus contortus?

18
Q

What is the rare of mortality in case of Type II Ostertagiosis?

19
Q

Which of the Trichostrongylid worms that have the largest eggs?

A

Nematodirus

20
Q

What is the best way to detect eggs of Trichostrongylids in faeces?

21
Q

What genera of worms can cause villous atrophy and erosion in the jejunum?

A

Cooperia
Nematodirus
Trichosdtrongylus

22
Q

What is the method to separate the different Trichostrongylid worms in faecal sample?

A

Faecal culture of larvae

23
Q

Which worms can cause haemorrhagic gastritis out of the following ones?

A

haemonchus

24
Q

What is the host of Haemonchus contortus?

A

Sheep and goat

25
What is the host of Trichostrongylus colubriformis?
Sheep and goat
26
What causes abomasal nodules?
Ostertagia ostertagi
27
What is the cell stage of Nematodirus egg in faces?
4-8 cell-stage
28
What species can be found in abomasum of cattle?
Ostertagia ostertagi
29
What morphological character does not fit for Haemonchus contortus?
Smaller than 1cm
30
How worms can cause sub-mandibular oedema within the group of Trichostrongylids?
In mucosa
31
Which worms can produce umbilicated nodules on the surface of mucosa?
Ostertagia
32
What type of diarrhoea can be observed during the winter form of Ostertagiosis?
Intermittent
33
What kind of nematodes can be detected according to eggs?
Nematodirus Eggs of Nematodirus spp. (compared to ‘Trichostrongyle-type’ eggs) are twice as big (130-260 um) and in 4-8 cell stage.
34
In case of Type II Ostertagiosis, what can be detected in the faeces?
Few eggs In the autumn, they ingest a lot of L3 which enter hypo-biotic state, and only a few eggs are produced.