Small Animal Ascarids (Roundworms) Flashcards
what is the common name for ascarids
roundworms
where do adult ascarids like to live
small intestine of host
describe an adult ascarid
3 prominent lips
thick,stout body
adults large, white
true or false:
ascarids (roundworms) are clinically very important parasites
true
describe the egg of ascarids
large
round
thick-shelled
true or false:
eggs of ascarids are immediately infective
false
roundworm eggs are not immediately infective
how long does it take for ascarid eggs to become infective
2-4 weeks to become infective
true or false:
ascarid eggs are very resistant to environmental degradation
true
true or false:
ascarid eggs are very easy to disinfect
false
ascarid eggs are very resistant to chemical disinfectants
what are the means of transmission for small animal roundworms
-ingesting infective eggs (L3)
-ingesting paratenic host
-prenatal infections
-transmammary infections
what species of roundworms can be transmitter through ingestion
all species
which is the only species that can be transmitted through prenatal and transmammary infections
Toxacara canis
true or false
you will mostly only see classical clinical presentations with severe infections of roundworms in puppies
true
what are some clinical signs of a T. canis infection in a dog
mucoid diarrhea
pot-belly
painful abdomen
rough hair coat
fail to thrive
what is mostly used to diagnose a T. canis infection
fecal float - mild clinical signs are not enough
what type of migration is seen with T. canis in puppies
hepatotracheal (live-lung) migration
in a dog older than 2 months of age, where would you likely see residing T. canis
somatic tissue (muscle)
what is the most important route of infection of T. canis in a puppy
prenatal infections
true or false:
most infections of T. canis in an adult dog is found in the intestines
false
which age group of dogs is of most concern with T. canis
young dogs
what is the prepatent period of T. canis eggs (infection)
3-4 weeks – shortest prepatent period of any ascarid
how can you physically distinguish between T. canis and T. cati
T. cati has a more prominent lateral alae present
true or false:
all cats regardless of age are susceptible to T. cati
true - there is no significant age-related immunity
what is the most common route of transmission of T. cati
ingestion of paratenic host
true or false:
there are no prenatal infections when it comes to T. cati
true
which species of Toxacaris has a smooth shell
T. leonina
what is the main ascarid of raccoons / wildlife
B. procyonis
what are the main concern / area of impact with B. procyonis
severe neurological disease
true or false:
Baylisacaris spp is zoonotic
true
what is the most important life stage for ascarids for their pathogenesis
adult life
true or false:
because of large worm numbers in the intestines, the blockages created often lead to SI rupture and intussusception
false
true or false:
clinical signs will often appear when the liver is affected due to migration
false
when it comes to the diagnosis of roundworms in puppies, what should you do?
assume all puppies are infected
how should you handle the treatment of puppies with roundworms
treat 2 -4- 6- 8 weeks as well as treat the mom
all broad spectrum anthelmintics are effective
