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Parasites > RoundWorms > Flashcards

RoundWorms Flashcards

1
Q

morphology of adult round worms

A

medium sized up to 40cm
rigid
spindle shaped
white opaque
no buccal capsule
3 lips
no bursate in males

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2
Q

morphology of roundworm eggs

A

ovoid, thick shelled(3) layers

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3
Q

location of roundworms

A

small intestine

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4
Q

ascaroid

A

small intestine –> liver –> lungs –> trachea –> pharynx —> small intestine

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5
Q

toxocaroid

A

small intestine –> liver –> lungs –>blood

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6
Q

ascaridioid

A

moults in mucosa of small intestine
no migration

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7
Q

infection routes of roundworms

A

po
prental and lactogenic

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8
Q

cause of equine parascariosis

A

parascaris equorum

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9
Q

morphology of equine parascariosis

A

20-40cm
rigid

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10
Q

life cycle of equine parascariosis

A

direct
PE2 ascaroid

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11
Q

prepatent period of equine parascariosis

A

10-12weeks

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12
Q

clinical signs of equine parascariosis

A

cough
nasal discharge
anorexia
dullness
colic
weight loss
nervous signs
diarrhoea
worms in faeces

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13
Q

necrscopy of equine parascariosis

A

catarrhal enteritis
invagination
occlusion of small intestine
rupture of intestinal wall
peritonitis
haemhorrhage
imflammatory foci
nodules contating dead larve in liver

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14
Q

cause of bovine toxocariosis

A

toxocara vitulorum

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15
Q

morphology of bovine toxocariosis

A

15-30cm long
white/transparent

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16
Q

host of bovine toxocariosis

A

cattle
buffalo
sheeo
goat

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17
Q

life cycle of bovine toxocariosis

A

direct
PE2 toxocaroid

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18
Q

clinical signs of bovine toxocariosis

A

changing appetite
decreased growth rate
abdominal spasm
diarrhoea
strong butyric or acetone like odour
worms in faeces

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19
Q

when is there worms in faeces for flotation in bovine toxocariosis

A

<4month old calf

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20
Q

necroscopy of bovine toxocariosis

A

catarrhal enteritis
acetone smelling meat

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21
Q

cause of porcine ascariosis

A

ascaris suum

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22
Q

morphology of porcine ascariosis

A

15-40cm
long, rigid
white

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23
Q

life cycle of porcine ascariosis

A

direct
PE2 ascaroid type

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24
Q

prepatent period of porcine ascariosis

A

8-9weeks

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25
Q

host of porcine ascariosis

A

pig, wild boar

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26
Q

clinical signs of porcine ascariosis

A

cough
dyspnoea
anaemia
anorexia
worms in faeces

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27
Q

false +ve faecal exam in porcine ascariosis

A

due to coprophagy

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28
Q

necroscopy of porcine ascariosis

A

catarrhal enteritis
roundworms in gut
cloudy whitish spots on liver
haemorrhage in lung
pneumonia

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29
Q

ascaridiosis cause

A

ascaridia galli
a. columbae
a. dissimilis

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30
Q

morphology of a. galli

A

5-12cm

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31
Q

morphology of a. columae and a. dissimilis

A

3-7cm

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32
Q

life cycle of ascaridiosis

A

direct
pe2 ascaridiosis

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33
Q

host of a. columbaee

A

pigeon

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34
Q

host of a. dissimilis

A

turkey

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35
Q

host of a. galli

A

fowl
turkey
duck
game birds

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36
Q

clinical signs of ascaridiosis

A

dull feather coat
curtailment of food
catarrhal enteritis
intestinal occlusion
decreased egg production
nervous signs

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37
Q

necroscopy of ascaridiosis

A

catarrhal haemorrhae croupous enteritis

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38
Q

toxocarosis
toxascariosis cause

A

toxocara canis
toxocara cati
toxocaris leonina

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39
Q

morphology of t. canis

A

10-18cm

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40
Q

morphology of t. cati

A

3-10cm

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41
Q

morphology of t. leonina

A

6-10cm

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42
Q

life cycle of t. canis

A

pe2 is ascaroid under 2 months
and toxocaroid over 4 months

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43
Q

life cycle of t. cati

A

ascaroid and toxocaroid

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44
Q

pe2 of t. leonina is

A

ascaridoid

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45
Q

host of toxocarosis
toxascariosis

A

dog, fox, cat

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46
Q

clinical signs of toxocarosis
toxascariosis

A

intermittent diarrhoea
changing appetite
pot belly
anaemia
weight loss
dull coat
cough
worms in vomit and faeces
nervous signs

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47
Q

necroscopy of toxocarosis
toxascariosis

A

small intestine filled with worms
enteritis
obturation
invagination
haemorrhage and inflammation in lungs

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48
Q

heterakiosis cause

A

heterakis gallinarum
h. dispar
h. isolonche

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49
Q

morphology of heterakiosis

A

0.7-1.5cm
long white

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50
Q

host of h. gallinarum

A

guinea fowl
turkey
pigeon
pheasant

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51
Q

host of h. dispar

A

duck, goose

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52
Q

host of h. isolonche

A

pheasant
wild bird

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53
Q

clinical signs of heterakiosis

A

diarrhoea
unthriftness

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54
Q

necropscopy of heterakiosis

A

haemorrhage
thickened caecal mucosa
verucous typhlitis with nodules

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55
Q

parascaris equorum egg

A

90-100um
spherical
yellowish brown
thick shelled with pitted surface

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56
Q

t. vitulorum egg

A

70-90um
brownish
thick shelled
outer pitted coat

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57
Q

ascaris suum eggs

A

50-70um
ovioid
brownish
thick shelled
irregularaly mammilated

58
Q

ascaridosis egg

A

90um
ellipsoidal
colourless
smooth thick shell

59
Q

t. canis egg

A

75-90um
subglobular
brownish with thick pitted shell

60
Q

t. cati egg

A

65-75um
subspherical
brownish

61
Q

t. leonina egg

A

70-85um
subspherical
light coloured
smooth egg shell
zygote doesnt fill it

62
Q

heterakiosis egg

A

65-80um
ellipsoidal
thick, parallel sided smooth shell
contain zygote

63
Q

infection of bovine toxocarosis

A

po with milk
no pathogeneisis with L3 infection

64
Q

infection of porcine ascariosis

A

po with larvated eggs or paratenic host

65
Q

infection of ascaridosis

A

by larvated eggs or paratenic hosts

66
Q

infection of toxocarosis

A

po or prenatally or transmammary

67
Q

prepatent period of toxocarosis po

68
Q

prepatent period of toxocarosis transmammary

A

27-35dayys

69
Q

prepatent period of toxocarosis by eating paratenic host

70
Q

prepatent period of toxocarosis prenatal

71
Q

pinworm disease of horse and donkey name

A

oxyuriosis

72
Q

cause of oxyuriosis

73
Q

morphology of oxyuriosis

A

females = 4-15cm
males = 1-2cm
gradual tapering

74
Q

location of oxyuriosis

A

caecum and colon

75
Q

life cycle of oxyuriosis

76
Q

when do oxyuriosis males die

A

after copulation

77
Q

when do oxyuriosis females die

A

once they stick their eggs in clumps to skin of perianal region

78
Q

infection of oxyuriosis

79
Q

prepatent period of oxyuriosis

80
Q

host of oxyuriosis

81
Q

clinical signs of oxyuriosis

A

perineal irritation, intense itching, anus rubbing
rat tailed condition
female worms voided and seen in faeces

82
Q

eggs of oxyuriosis

A

rarely found in faeces as they are removed from the perineal skin

83
Q

necroscopy of oxyuriosis

A

adults in the colon and rectum

84
Q

eyeworms

A

thelaziosis

85
Q

cause of thelaziosis

A

t. rhodesi
t. gulosa
t. skjabini
t. rhodes
t. lacrymalis
t. callipaeda
t/ californiensis

86
Q

morphology of thelaziosis

A

0.5-2cm yellowish whitsh, thin, cuticle
transverselt striated on the anterior end

87
Q

location of t. rhodesi

A

conjunctiva

88
Q

location of thelaziosis

A

lacrymal duct

89
Q

infection of thelaziosis

A

fly feeding on conjunctive

90
Q

life cycle of thelaziosis

91
Q

intermediate hosts of thelaziosis

92
Q

host of t. rhodesi, t. gulosa, t. skjabini

A

cattle
buffalo
zebu
sheep
goat

93
Q

host of t. lacrymalis

94
Q

host of t. calipaeda, t. californiensis

A

dog
cat
rabbit
human

95
Q

clinical signs of thelaziosis

A

conjunctivitis
lacrymation
photofobia
keratitis
opaque cornea
cornea ulceration
worms in conjunctive

96
Q

which thelaziosis is zoonotic

A

the dog ones

97
Q

cause of spirocercosis

A

spirocerca lupi

98
Q

morphology of spirocercosis

A

3-8cm
stout
reddish
spirally coiled

99
Q

location of spirocercosis

A

oesophagus or stomach

100
Q

life cycle of spirocercosis

101
Q

inter host of spirocercosis

A

dung beetle

102
Q

prepatent period for spirocercosis

103
Q

host of spirocercosis

104
Q

clinical signs of spirocercosis

A

salivation
regurgitation
weight loss
dysphagia

105
Q

eggs of spirocercosis

A

in vomit anf faeces

106
Q

necroscopy of spirocercosis

A

inflammation o faorta, stenosis, aneurysm
rupture of aorta, haemothorax
metastasis of thoracic vertebrae

107
Q

cause of habronematidosis

A

draschia megastoma
habronema muscae
h. microstoma

108
Q

morphology of habronematidosis

A

0.7-2.5 cm long
slender
white
translucid

109
Q

location of d. megastoma

A

in tumour like swellings in fundus region of stomach

110
Q

location of habronema

A

in mucous covering the gastric mucosa

111
Q

life cycle of habronematidosis

112
Q

intermediate hosts of habronematidosis

A

mucoid flies

113
Q

prepatent perid of habronematidosis

114
Q

host of habronematidosis

115
Q

clinical signs of habronematidosis

A
  1. stomach
  2. lung
  3. cutaneous
  4. muco-cutaneous
116
Q

stomach habronematidosis

A

nut sized tumour like nodular lesions
fibrous nodules in stomach

117
Q

lung habronematidosis

A

peribronchila tissue nodules

118
Q

cutaneous habronematidosis

A

summer sores on chest, fetlock, inner legs

119
Q

mucocutaneous habronematidosis

A

3 deposited on conjunctiva
conjunctivits
granulomes
blepharitis
dermatitis
photophobia
lacrymation
eyelid ulceration

120
Q

eggs of habronematidosisdetection

A

via flotation

121
Q

L1 of habronematidosis detection

122
Q

L3 of habronematidosis detection

A

in summer sores

123
Q

necroscopy of habronematidosis

A

catarrhal enteritis
mass of worms in nodular lesions
necrotic debris protruding the stomach lumen

124
Q

cause of setariosis

A

setaria equina

125
Q

morphology of setariosis

A

5-12cm long

126
Q

location of setariosis

A

peritoneal and pleural cavity

127
Q

life cycle of setariosis

128
Q

inter hosts of setariosis

A

mosquitoes

129
Q

prepatent period of setariosis

130
Q

host of setariosis

131
Q

clinical signs of setariosis

A

lumbar paralysis

132
Q

L1 of setariosis detection

133
Q

necroscopy of setariosis

A

conjunctivitis
exophthalmos
periorbital swelling
photophobia
lacrymation
discharge without granuloma or cysts

134
Q

onchocercosis cause

A

o. cervicalis
o. reticulata
o. gutturosa
o. lienalis
o. gibsoni
o. jakutensis
o. dewtti japonica
o. lupi

135
Q

morphology of onchocercosis

A

females > 50cm

136
Q

morphology of o. gibsoni males

137
Q

morphology of o. cervicalis males

138
Q

morphology of o. reticularis males

139
Q

location of onchocercosis

A

nodules in fibrous tissue of ligaments and intermuscular or sc CT of head and neck

140
Q

life cycle of onchocercosis

141
Q

intermediate host of onchocercosis

A

midges and blackflies

Parasites (9 decks)

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