Practical 5

Question 1

How many times do the nematodes moult during their

ontogenic development?

Answer 1

4

Question 2

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

Answer 2

Buccal capsule

Question 3

Eggs of gastro-intestinal worms are:

Answer 3

Thin-shelled

Question 4

What term is correct for the nematodes?

Answer 4

Sexes usually are separated

They’re covered by cuticle

Question 5

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

Answer 5

Speculum
Bursa copulatrix
Uterus

Question 6

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

Answer 6

3 weeks

Question 7

Which species develop directly?

Answer 7

Hyostrongylis rubidus
Amidostonum anseris
Ostertagia ostertag

Question 8

What is the Latin name of red stomach worm?

Answer 8

Hyostrongylus rubidus

Question 9

What causes croupos-diphtheritic gastritis?

Answer 9

Hyostrongylus rubidus

Question 10

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

Answer 10

Hyostrongylus rubidus

Question 11

What is the cell stage of Hyostrongylus egg in vomitus?

Answer 11

4-8 cell stage

Question 12

What is the correct term that characterize the Hyostrongylus worms?

Answer 12

Reddish body

Small cephalic vesicle

Question 13

What is the infective stage of Hyostrongylus rubidus?

Answer 13

L3 infective larvae

Question 14

What is the Latin name of gizzard worm?

Answer 14

Amidostomum anseris

Question 15

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

Answer 15

Amidostomum anseris

Question 16

Gizzard worms effect:

Answer 16

Goslings, ducklings, young aquatic fowls

Question 17

What is the most important host of Haemonchus contortus?

Answer 17

Sheep

Question 18

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

Answer 18

high

Question 19

Which of the Trichostrongylid worms that have the largest eggs?

Answer 19

Nematodirus

Question 20

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

Answer 20

flotation

Question 21

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

Answer 21

Cooperia
Nematodirus
Trichosdtrongylus

Question 22

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

Answer 22

Faecal culture of larvae

Question 23

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

Answer 23

haemonchus

Question 24

What is the host of Haemonchus contortus?

Answer 24

Sheep and goat

Question 25

What is the host of Trichostrongylus colubriformis?

Answer 25

Sheep and goat

Question 26

What causes abomasal nodules?

Answer 26

Ostertagia ostertagi

Question 27

What is the cell stage of Nematodirus egg in faces?

Answer 27

4-8 cell-stage

Question 28

What species can be found in abomasum of cattle?

Answer 28

Ostertagia ostertagi

Question 29

What morphological character does not fit for Haemonchus contortus?

Answer 29

Smaller than 1cm

Question 30

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

Answer 30

In mucosa

Question 31

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

Answer 31

Ostertagia

Question 32

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

Answer 32

Intermittent

Question 33

What kind of nematodes can be detected according to eggs?

Answer 33

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

Question 34

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

Answer 34

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