Nematodes 1

Question 1

sexual dimorphism

Answer 1

males are smaller and have an accessory copulatory structure

Question 2

digestive tract

Answer 2

from mouth and buccal cavity through oesophagus and intestine to anus or cloaca

Question 3

cell layers of intestine

Answer 3

single layer of cells

Question 4

female organs

Answer 4

paired ovaries
oviduct
paired uteri
vagina opening by vulva

Question 5

male organs

Answer 5

testis
vas deferens
ejaculatory duct
cloaca
accessory genitals
weak developed caudal cuticular alae
well developed copulatory bursa

Question 6

what larval stage is infective

Answer 6

L3

Question 7

life cycle

Answer 7

either direct or indirect

Question 8

another name for strongyloidosis

Answer 8

dwarf worms

Question 9

causes of strongyloidosis

Answer 9

strongyloides ransomi
s. papillosus
s. westeri
s. stercoralis

Question 10

morphology of strongyloides

Answer 10

2-8mm long
slender
white
genital pore at the middle of the female

Question 11

predilection sites of strongyloides

Answer 11

prox third part of small intestine
- extraintestinal migration

Question 12

homogonic development

Answer 12

parasitic cycle with unfavourable external conditions
in young animals
Egg –> L1 –> L2, L3 —> infection —> parasitic adult

Question 13

what is autoinfection

Answer 13

L3 wont be shed and immediately infects the host

Question 14

life cycle of strongyloidosis

Answer 14

direct

Question 15

heterogonic development

Answer 15

a parasitic cycle and free libing reproductive cycles in favourable external conditions
older animals
Egg –> L1, L2, L3 –> free living in males and females —> egg –> L1, L2, L3 –> parasitic adult

Question 16

s. ransomi host

Answer 16

pig

Question 17

s. papillosus host

Answer 17

ruminant
rabbit

Question 18

s. westeri host

Answer 18

horse
donkey

Question 19

s. stercoralis host

Answer 19

dog
fox
cat
man

Question 20

clinical signs of strongyloides in 2-4 weeks old piglets =

Answer 20

bloody diarrhoea, anaemia, emaciation, exsiccosis

Question 21

clinical signs of strongyloides 1-3month old calf =

Answer 21

coughing, dysponea, fever, anorexia, diarrhoea, anaemia

Question 22

faecal examination of strongyloides

Answer 22

flotation

Question 23

eggs of strongyloides

Answer 23

ellipsoidal
thin shelled
very small
40-50 um
containing a morula or L1

Question 24

s. ransomi infection

Answer 24

larval development arrested for a long time therefore mmigrate to the mammary gland and infection is via colostrum and lactogenic

Question 25

s. papillosus infection

Answer 25

percutan

Question 26

s. westeri infection

Answer 26

colostal & lactogenic infection

Question 27

s. stercoralis infection

Answer 27

autoinfection and percutan via rectum

Question 28

necroscopy of strongyloides

Answer 28

in mucosa or the mucosal scrapings taken from the mucosa of the small intestine - 1m from pylorus

Question 29

autoinfection of strongyloides

Answer 29

when L3 wont be shed and it will immediately infect the host

Question 30

causes of strongylidosis

Answer 30

adults of large and small strongyles

Question 31

small strongyles

Answer 31

cyathostomum triodontophorus cylicocyclus

Question 32

large strongyles

Answer 32

stryongylus vulgaris s. equinus s. edentates s. asini

Question 33

large strongyles morphology

Answer 33

2.5-5cm long greyish red developed large buccal capsule in its base tooth like projections

Question 34

number of tooth like projections in s. vulgaris

Answer 34

2

Question 35

number of tooth like projections in s. equinus

Answer 35

4

Question 36

number of tooth like projections in s. edentatus

Answer 36

0

Question 37

small strongyles morphology

Answer 37

0.5 - 2cm in length white to dark red ring shaped buccal capsule

Question 38

predilection site of strongyles

Answer 38

caecum or colon

Question 39

life cycle of strongyles

Answer 39

direct

Question 40

prepatent period of s. vulgaris

Answer 40

6 months

Question 41

prepatent period of s. equinus

Answer 41

9 months

Question 42

prepatent period of s. edentates

Answer 42

11months

Question 43

host of strongyles

Answer 43

equines

Question 44

s. equinus infection route

Answer 44

L3 --> large intestine --> peritoneal cavity --> liver -->pancreas --->lumen of large intestine --> thrombus formation in mesenteric artery

Question 45

clinical signs of strongyles

Answer 45

inapparent rarely diarrhoea unthriftness anaemia

Question 46

faecal exam of strongyles

Answer 46

flotation

Question 47

strongyles eggs

Answer 47

90um long oval thin shelled

Question 48

length of s. vulgaris

Answer 48

1020um

Question 49

length of s. edentatus

Answer 49

790um

Question 50

length of s. equinus

Answer 50

980um

Question 51

length of small strongyles

Answer 51

800um

Question 52

body: tail of s. vulgaris

Answer 52

2.5: 1

Question 53

body: tail of s. edentatus

Answer 53

2: 1

Question 54

body: tail of s. equinus

Answer 54

2:1

Question 55

body: tail of small strongyles

Answer 55

1.5:1

Question 56

no. of gut cells of s. vulgaris

Answer 56

32

Question 57

no. of gut cells of s. edentatus

Answer 57

20

Question 58

no. of gut cells of s. equinus

Answer 58

16

Question 59

no. of gut cells of small strongyles

Answer 59

8

Question 60

characteristic of s. vulgaris

Answer 60

stumpy short

Question 61

characteristic of s. edentatus

Answer 61

slender medium

Question 62

characteristic of s. equinus

Answer 62

slender medium

Question 63

characteristic of small strongyles

Answer 63

stumpy medium

Question 64

necroscopy findings of strongyles

Answer 64

adults in caecum and colon

Question 65

cause of strongylosis

Answer 65

infection of extraintestinal migrating larvae of large strongyles

Question 66

predilection site of s. vulgaris larva

Answer 66

submucosa and wall of caecum and colon, a. mesenterica cranialis

Question 67

predilection site of s. equinus larva

Answer 67

subserosa of colon abdominal cavity liver pancrease

Question 68

predilection site of s. edentatus larva

Answer 68

colon mucosa vena portae liver sub peritoneal haemorrhages

Question 69

clinical signs of strongylosis

Answer 69

unthriftness in foals anaemia colic intermittent lameness

Question 70

faecal exam of stronglosis

Answer 70

no eggs

Question 71

necroscopy findings of s. vulgaris

Answer 71

in the trunk of the a. mesesnteric cranialis inflammation of the arterial wall formation of cauliflower like thrombus colic strangulation ileus aneurysms abscesses infact

Question 72

necroscopy findings of s. equinus

Answer 72

haemorrhagic tracts rarely hepatits pancreastits

Question 73

necroscopy findings of s. edenatus

Answer 73

liver and sub peritoneal haemorrhages subserosa haematoma

Question 74

what cyathostominosis

Answer 74

small strongyles larva in mucosa of large intestine

Question 75

cause of cyathostominosis

Answer 75

large numbers of small strongyle larvae of cyathostomum spp in mucosa of the large intestine

Question 76

treatment of cyathostominosis

Answer 76

moxidectin fenbendazole

Question 77

clinical signs of cyathostominosis

Answer 77

inapparent rarely diarrhoea colic rapid weight loss

Question 78

faecal examination of cyathostominosis

Answer 78

no eggs

Question 79

necroscopy of cyathostominosis

Answer 79

catarrhal haemorrhagic enteritis large number of brihgt red L4, L5 in diarrhoeic faeces L4 in mucosa

Question 80

another name for nodular worm disease

Answer 80

oesophogostomosis

Question 81

cause of oesophogostomosis

Answer 81

oesophagostomum denatum oe. radiatum oe. venulosum oe. columbianum oe. quadrispinulatum charbertia ovina

Question 82

morphology of oesophagostomum

Answer 82

1-2.5cm in length thin white worms with tapered head shallow buccal cavity inflated cuticular cephalic vesicle at anterior end

Question 83

predilection site of oesophagostomum

Answer 83

caecum colon ileum in Ru

Question 84

life cycle of oesophagostomum

Answer 84

direct

Question 85

hosts of oe. denatum

Answer 85

pig wild boar

Question 86

hosts of oe. quadrispinulatum

Answer 86

pig wild boar

Question 87

hosts of oe. radiatum

Answer 87

cattle buffalo wild large ru

Question 88

hosts of oe. venulosum

Answer 88

sheep goat wild small and large ru

Question 89

hosts of oe. columbianum

Answer 89

sheep goat

Question 90

clinical signs of oesophagostomum

Answer 90

not common fever inappetence diarrhoea anaemia oedema emaciation

Question 91

faecal exam of oesophagostomum

Answer 91

flotation

Question 92

eggs of oesophagostomum in pigs

Answer 92

eggs arent distuingishable

Question 93

eggs of oesophagostomum in ru

Answer 93

eggs not distinguishable from gi nematodes

Question 94

necroscopy of oesophagostomum in pig

Answer 94

necrotic diphtheroid or haemorrhagic enteritis

Question 95

necroscopy of oesophagostomum in ru

Answer 95

catarrhal colitis oedema anaemia yellowish -green or up to 2cm sized brownish red purulent

Question 96

no nodules in which oesophagostomum

Answer 96

oe. venulosum

Question 97

cause of charbertiosis

Answer 97

charbertia ovina

Question 98

another name for charbertiosis

Answer 98

large mouthed bowel worm

Question 99

morphology of charbertiosis

Answer 99

large buccal capsule strognyle type egg direct life cycle hypobiosis L4