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VET 278- Parasites > Nematodes > Flashcards

Nematodes Flashcards

1
Q

True/False: Nematodes will only ever reproduce sexually

A

True

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2
Q

Describe the basic life cycle of Nematodes:

A

Egg to L1 to L2 to L3 to L4 to adult

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3
Q

True/False: Nematodes are always non-migratory

A

False- nematodes can be either migratory or non-migratory in their life cycles

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4
Q

What location are strongyloides normally found within the host?

A

Found in the small intestine and the caecum within poultry

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5
Q

What is unique about the life cycle of the strongyloides?

A

Alternate between a parasitic and a free living stage in their life cycles

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6
Q

Name the genus that this egg is derived from:

A

Stronyloides

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7
Q

Are the eggs from the order Rhabdita normally embryonated or unembroyonated?

A

Normally embryonated

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8
Q

What is the colliqual names for trichostrongylus and haemonchus species?

A

Black scour worm

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9
Q

What is a distinguishing features of the trichostrongylus species?

A

A prominent excretory pore

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10
Q

What site does the black scour worm normally occupy?

A

Small intestine

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11
Q

What are some symptoms that are generally associated with the black scours worm?

A

Black scours

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12
Q

Name the species that is shown below:

A

Trichostrongylus

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13
Q

Name the species that is shown below:

A

Trichostrongylus

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14
Q

What species is typically infected with hamonchus and what site does it occupy?

A

Ruminants are normally infected with this parasite and it normally occupies the small intestine

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15
Q

What is a symptom associated with haemonchus?

A

Heavy and rapid weight loss occurs

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16
Q

Name the species that is shown below:

A

Haemonchus

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17
Q

Name the parasite that is pictured below:

A

Ostertagia

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18
Q

Name the parasite that is pictured below:

A

Cooperia

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19
Q

Name a unique feature concerning the life cycle of the nematodirus worm:

A

life cycle developement to L3 stage occurs within the egg

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20
Q

Name the parasite shown in the picture below:

A

Nematodirus species

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21
Q

What is the main host of the ancylostoma canininum parasite?

A

The dog

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22
Q

What is the site of the ancylostoma caninum?

A

small intestine

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23
Q

What is the life cycle of the ancylostoma caninum parasite?

A

Follow the basic life cycle of the nematoda, it can be transmitted transmarilary at L3 stage, the L3 stage normally migrates to the muslce in L3 stage to return to the small intestien by stage L4. Paratenic hosts can be involved.

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24
Q

Name the parasite that is pictured below:

A

ancylostoma caninum

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25
Q

What is the host of the species found in superfamily: strongyloidea, family: strongylidae?

A

horses and donkeys

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26
Q

What site do the strongyles of horses occupy?

A

caecum and the colon

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27
Q

What is a unique feauture of the life cycle of the strongyles of horses?

A

extensive tissue migration occurs

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28
Q

What is the host of the chabertia ovina?

A

ruminants and pigs

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29
Q

What site does the chabertia ovina occupy?

A

caecum and colon

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30
Q

What is a unique feature of the life cycle of chabertia ovina?

A

migration to the tissue mucosa occurs.

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31
Q

What is the name of the parasite pictured below?

A

Chaberta ovina

32
Q

What is the host of the parasite stephanurus dentatus?

A

pig

33
Q

What site does stephanurus dentatus occupy?

A

kidney and the perirenal tissues

34
Q

What is the life cycle of stephanurus dentatus?

A

Ingested as L3 in the gut, then migrates to the liver as L4 then becomes an adult in the kidney

35
Q

Name the parasite that is shown below:

A

Stephanurus dentatus

36
Q

Name a nematode that occupies the trachea of poultry:

A

Syngamus trachea

37
Q

What is the host of metastrongylus species?

A

the pig

38
Q

What site does the metastrongylus parasite occupy?

A

Bronchi and bronchioles

39
Q

What is the intermediate host that is involved in the cycle of the metastrongylus?

A

earthworm

40
Q

Name the parasite shown below:

A

Metastrongylus

41
Q

What is the host of the parasite toxocara canis?

A

the dog

42
Q

What site does toxocara canis occupy?

A

small intestine

43
Q

Name some unique features of the life cycle of the toxocara canis parasite:

A
  • complex/paratenic hosts
  • somatic/tracheal migration
  • prenatal/perinatal infection
44
Q

Name the species from which the following eggs came from:

A

Toxocara canis

45
Q

What is the host of ascaris suum?

A

pig

46
Q

What site does ascaris suum occupy?

A

small intestine

47
Q

What is the life cycle involved in ascaris suum?

A
  • direct
  • somatic migration (pre-patent period of about 2 months)
48
Q

Name the parasite that is pictured below:

A

Ascaris Suum

49
Q

What is the host of aniskas?

A

toothed whale

50
Q

What is the site occupiedby aniskas?

A

stomach

51
Q

What is the life cycle that is involved in aniskas?

A
  • indirect
  • krill
  • intermediate host
52
Q

Can humans become infected by eating fish that are infected with the aniskas parasite?

A

Yes

53
Q

What is the host of ascardida galli

A

chicken

54
Q

What is the site of ascaridia galli?

A

small intestine

55
Q

What is the host of oxyuris equi?

A

horses and donkeys

56
Q

What site does Oxyuris equi occupy?

A

caecum, colon, rectum

57
Q

Name the parasite that is pictured below:

A

Oxyuris Equi

58
Q

What is the main host of habronema and draschia?

A

horses and donkeys

59
Q

What site to habronema and draschia occupy?

A

stomach

60
Q

What is the intermediate host that is involved in the life cycle of habronema and draschia?

A

Muscid fly

61
Q

Name the parasite pictured in the images below:

A

Habronema/Draschia

62
Q

What is the host of the parasite Spirocerca Lupi?

A

dogs

63
Q

What is the site of the parasite Spirocerca lupi?

A

oesphagus and the stomach

64
Q

What vector is involved in the life of spircerca lupi?

A

beetle

65
Q

Name the parasite that is shown below:

A

Spirocerca lupi

66
Q

What is the host of the parasite dirofiliria immitis?

A

dogs (cats and humans)

67
Q

What is the site of dirofiliria immits?

A

cardiovascular system

68
Q

What is the name of the vector involved as an intermediate host of the dirofiliria life cycle?

A

mosquitio

69
Q

What is the host of trichenella spiralis?

A

most mammals

70
Q

What is the site of trichenella spiralis?

A

small intestine (but larve stage is able to remain within the muscle for very long periods of time)

71
Q

Briefly describe the life cycle that is invovled in the trichenella spiralis life cycle:

A
  • direct life cycle
  • no free living stage
  • encapsulated L1 long lived within the muscle
72
Q

Name the parasite that is shown below:

A

Trichenella Spiralis

73
Q

What is the host of the trichurus species?

A

mammals

74
Q

What is the site of the trichurus species?

A

large intestine

75
Q

What species does this egg come from?

A

Trichuris

VET 278- Parasites (7 decks)

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