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Parasites > Trematodes > Flashcards

Trematodes Flashcards

1
Q

definition of trematode

A

unsegmented parasitic worms with 2 suckers and branching intestinal canal

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2
Q

3 names for trematodes

A

fasciolosis
paramphistomidosis
dicrocoeliosis

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3
Q

low resistance to fasciolosis

A

sheep
goat
rabbit
mouse
rat

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4
Q

delayed resistance

A

cattle
buffalo
camel
deer
guinea pig

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5
Q

early resistance

A

horse
pig
dog
cat

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6
Q

host of fasciola hepatica

A

herbivorous mammals and humans

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7
Q

morphology of fasciola hepatica

A

flat 2-3cm
leaf like
slow moving
whitish/greyish brown
head conical and emerges btw 2 shoulders

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8
Q

suckers on fasciola hepatica

A

small sucker on tip of head and on ventral side

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9
Q

egg of fasciola hepatica

A

oval
1 operculate
golden yellow
130-145 um
zygote

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10
Q

location of fasciola hepatica

A

bile ducts

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11
Q

longevity of fasciola hepatica

A

several years

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12
Q

sexual organs of fasciola hepatica

A

yellow masses of eggs behind ventral sucker
testicles have whitish branches
brown yolk glands
visible intestines

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13
Q

intermediate hosts of fasciola hepatica

A

freshwater snails of genus lymnaea

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14
Q

intermediate hosts of fasciola gigantica

A

l. auricularia
l. virdis

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15
Q

diagnosis of fasciola hepatica eggs

A

sedimentation or flotation
eggs in faeces at 6-12weeks

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16
Q

diagnosis of fasciola hepatica acute

A

weight loss
sudden death
no eggs in faeces

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17
Q

diagnosis of fasciola hepatica chronic

A

submandibular oedema
cachexia
changes in blood paramters

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18
Q

life cycle of fasciola hepatica

A

Miracidium -> sporocyst -> redia ->cercaria -> metacercariae

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19
Q

migration of fasciola hepatica

A

4-6weeks

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20
Q

maturation of fasciola hepatica

A

10weeks

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21
Q

paramphistomidosis location

A

rumen and reticulum

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22
Q

morphology of paramphistomidosis

A

bean like 1-2cm
pinkish/reddish conical worms

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23
Q

suckers on paramphistomidosis

A

small sucker on oral end
bigger one of opposite end

24
Q

egg in paramphistomidosis

A

colourless

25
Q

life cycle of paramphistomidosis

A

miracidium -> sporocyst -> redia -> cercaria

26
Q

juvenile paramphistomidosis

A

dont leave intestinal canal

27
Q

infection of paramphistomidosis

28
Q

intermediate hosts of paramphistomidosis

A

Planorbids

29
Q

definite hosts of paramphistomidosis

A

grazing domestic and wild ruminants

30
Q

cattle paramphistomidosis

A

calicophoron daubneyi

31
Q

sheep and goat paramphistomidosis

32
Q

wild ru paramphistomidosis

A

p. cervi
p. ichikawai

33
Q

diagnosis of paramphistomidosis acute

A

diarrhoea
anorexia
intense thirst
rectal haemorrhage
oedema

34
Q

diagnosis of paramphistomidosis chronic

A

asymptomatic

35
Q

treatment of paramphistomidosis acute

A

stop grazing
fluke free pastures
niclosamide

36
Q

treatment of paramphistomidosis chronic

A

levamisole
oxyclozanide

37
Q

pathology of paramphistomidosis

A

erosion of duodenal mucosa
catarrhal, haemorrhagic enteritis
oedematous and ulcerative intestinal wall

38
Q

dicrocoeliosis location

A

hypertrophic biliary ducts

39
Q

morphology of dicrocoeliosis

A

flat 0.5-1cm
spearhead shaped worms
transparent body
whitish, light brown string of eggs

40
Q

sucker of dicrocoeliosis

A

sucker on tip of head
1 on ventral side

41
Q

life cycle of dicrocoeliosis

A

miracidium -> sporocyst -> sporocyst -> cercariae

42
Q

prepatent period of dicrocoeliosis

43
Q

2 intermediate hosts

A

snails
ants

44
Q

eggs of dicrocoeliosis

A

50um
oval, dark brown
miracidium

45
Q

diagnosis of dicrocoeliosis

A

no acute
after 7-9weeks theres eggs in faeces

46
Q

treatment for dicrocoeliosis

A

albendazole
praziquantel

47
Q

pathology of dicrocoeliosis

A

liver isnt enlarged - mottled surface
parenchyma intact
bile ducts become distended

48
Q

seasonality of acute fasciola

49
Q

seasonality of subacute fasciola

50
Q

seasonality of chronic fasciola

A

throughout the year

51
Q

appearance of symptoms of acute fasciola

52
Q

appearance of symptoms of chronic fasciola

53
Q

appearance of symptoms of fasciola

54
Q

location of liver flukes in acute

A

parenchyma

55
Q

location of liver flukes in subacute

A

parenchyma and bile ducts

56
Q

location of liver flukes in chronic

A

bile ducts and gall bladder

57
Q

intermediate hosts of calicophoron

A

Galba trunculata

Parasites (9 decks)

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