Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
10 Cards in this Set
- Front
- Back
|
what are the general features of order Ascarida?
|
eggs are thick-walled, distictive, contain single cell; very fecund and resistant in environment because they are long-lived and sticky. Adult worms are large, host-specific, mouth surrounded by 3 fleshy lips; infect terrestrial hosts
|
|
|
what is the basic life cycle of Ascaridida?
|
infective 'egg' is ingested (with L2) - no free-living state > larva released from eggshell >hepatotracheal migration > mature to adult in small intestine
|
|
|
how, basicly, is the host infected by Ascaridida?
|
direct ingestion of egg or ingesting paratenic host; neonates infected by larvae transmitted through placenta or mammary glands
|
|
|
what, basicly, is the result of a heavy infection?
|
moderate enteritis, suboptimal growth, ascarid antigens result in strong allergens, hypersensitivity and inflammatory reactions
|
|
|
where is Toxocara canis found?
|
small intestine of dogs
|
|
|
where is Toxocara cati found?
|
small intestine of cats
|
|
|
where is Baylisascaris procyonis found?
|
small intestine of dogs and racoons
|
|
|
where is Parascaris equorum found?
|
small intestine of horse (especially under 2yrs)
|
|
|
where is Ascaris suuni found?
|
small intestine of pigs
|
|
|
where is Heterakis gallinarum found?
|
cecum of chicken, turkey, other birds
|
