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Flashcards in Practical 5 Deck (34)
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1
Q

How many times do the nematodes moult during their

ontogenic development?

A

4

2
Q

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

A

Buccal capsule

3
Q

Eggs of gastro-intestinal worms are:

A

Thin-shelled

4
Q

What term is correct for the nematodes?

A

Sexes usually are separated

They’re covered by cuticle

5
Q

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

A

Speculum
Bursa copulatrix
Uterus

6
Q

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

A

3 weeks

7
Q

Which species develop directly?

A

Hyostrongylis rubidus
Amidostonum anseris
Ostertagia ostertag

8
Q

What is the Latin name of red stomach worm?

A

Hyostrongylus rubidus

9
Q

What causes croupos-diphtheritic gastritis?

A

Hyostrongylus rubidus

10
Q

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

A

Hyostrongylus rubidus

11
Q

What is the cell stage of Hyostrongylus egg in vomitus?

A

4-8 cell stage

12
Q

What is the correct term that characterize the Hyostrongylus worms?

A

Reddish body

Small cephalic vesicle

13
Q

What is the infective stage of Hyostrongylus rubidus?

A

L3 infective larvae

14
Q

What is the Latin name of gizzard worm?

A

Amidostomum anseris

15
Q

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

A

Amidostomum anseris

16
Q

Gizzard worms effect:

A

Goslings, ducklings, young aquatic fowls

17
Q

What is the most important host of Haemonchus contortus?

A

Sheep

18
Q

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

A

high

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?

A

flotation

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
Q

What is the host of Trichostrongylus colubriformis?

A

Sheep and goat

26
Q

What causes abomasal nodules?

A

Ostertagia ostertagi

27
Q

What is the cell stage of Nematodirus egg in faces?

A

4-8 cell-stage

28
Q

What species can be found in abomasum of cattle?

A

Ostertagia ostertagi

29
Q

What morphological character does not fit for Haemonchus contortus?

A

Smaller than 1cm

30
Q

How worms can cause sub-mandibular oedema within the group of Trichostrongylids?

A

In mucosa

31
Q

Which worms can produce umbilicated nodules on the surface of mucosa?

A

Ostertagia

32
Q

What type of diarrhoea can be observed during the winter form of Ostertagiosis?

A

Intermittent

33
Q

What kind of nematodes can be detected according to eggs?

A

Nematodirus
Eggs of Nematodirus spp. (compared to ‘Trichostrongyle-type’ eggs) are twice as big (130-260 um)
and in 4-8 cell stage.

34
Q

In case of Type II Ostertagiosis, what can be detected in the faeces?

A

Few eggs
In the autumn, they ingest a lot of L3 which enter hypo-biotic state, and only a few eggs are
produced.