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Parasitology > Small Animal Ascarids (Roundworms) > Flashcards

Small Animal Ascarids (Roundworms) Flashcards

1
Q

what is the common name for ascarids

A

roundworms

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2
Q

where do adult ascarids like to live

A

small intestine of host

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3
Q

describe an adult ascarid

A

3 prominent lips
thick,stout body
adults large, white

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4
Q

true or false:
ascarids (roundworms) are clinically very important parasites

A

true

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5
Q

describe the egg of ascarids

A

large
round
thick-shelled

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6
Q

true or false:
eggs of ascarids are immediately infective

A

false
roundworm eggs are not immediately infective

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7
Q

how long does it take for ascarid eggs to become infective

A

2-4 weeks to become infective

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8
Q

true or false:
ascarid eggs are very resistant to environmental degradation

A

true

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9
Q

true or false:
ascarid eggs are very easy to disinfect

A

false
ascarid eggs are very resistant to chemical disinfectants

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10
Q

what are the means of transmission for small animal roundworms

A

-ingesting infective eggs (L3)
-ingesting paratenic host
-prenatal infections
-transmammary infections

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11
Q

what species of roundworms can be transmitter through ingestion

A

all species

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12
Q

which is the only species that can be transmitted through prenatal and transmammary infections

A

Toxacara canis

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13
Q

true or false
you will mostly only see classical clinical presentations with severe infections of roundworms in puppies

A

true

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14
Q

what are some clinical signs of a T. canis infection in a dog

A

mucoid diarrhea
pot-belly
painful abdomen
rough hair coat
fail to thrive

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15
Q

what is mostly used to diagnose a T. canis infection

A

fecal float - mild clinical signs are not enough

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16
Q

what type of migration is seen with T. canis in puppies

A

hepatotracheal (live-lung) migration

17
Q

in a dog older than 2 months of age, where would you likely see residing T. canis

A

somatic tissue (muscle)

18
Q

what is the most important route of infection of T. canis in a puppy

A

prenatal infections

19
Q

true or false:
most infections of T. canis in an adult dog is found in the intestines

A

false

20
Q

which age group of dogs is of most concern with T. canis

A

young dogs

21
Q

what is the prepatent period of T. canis eggs (infection)

A

3-4 weeks – shortest prepatent period of any ascarid

22
Q

how can you physically distinguish between T. canis and T. cati

A

T. cati has a more prominent lateral alae present

23
Q

true or false:
all cats regardless of age are susceptible to T. cati

A

true - there is no significant age-related immunity

24
Q

what is the most common route of transmission of T. cati

A

ingestion of paratenic host

25
Q

true or false:
there are no prenatal infections when it comes to T. cati

A

true

26
Q

which species of Toxacaris has a smooth shell

A

T. leonina

27
Q

what is the main ascarid of raccoons / wildlife

A

B. procyonis

28
Q

what are the main concern / area of impact with B. procyonis

A

severe neurological disease

29
Q

true or false:
Baylisacaris spp is zoonotic

A

true

30
Q

what is the most important life stage for ascarids for their pathogenesis

A

adult life

31
Q

true or false:
because of large worm numbers in the intestines, the blockages created often lead to SI rupture and intussusception

A

false

32
Q

true or false:
clinical signs will often appear when the liver is affected due to migration

A

false

33
Q

when it comes to the diagnosis of roundworms in puppies, what should you do?

A

assume all puppies are infected

34
Q

how should you handle the treatment of puppies with roundworms

A

treat 2 -4- 6- 8 weeks as well as treat the mom
all broad spectrum anthelmintics are effective

Parasitology (10 decks)

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