Parasitology I Flashcards
(26 cards)
where do endoparasites live
internally
where do ectoparasites live
externally
what is symbiosis
two organisms living together
three types of symbiosis
commensalism
mutualism
parasitism
commensalism definition
one organism benefits, other is unaffected
mutualism definition
both organisms benefit
parasitism definition
one organism benefits, other is harmed
types of hosts
definitive
intermediate
paratenic/transport
reservoir
definitive host definition
a host that shelters that sexual adult stages of the parasite
intermediate host definition
a host that shelters the asexual (immature) or larval stages of the parasite
paratenic/transport host definition
a host in which the parasite survives without multiplying or maturing
reservoir host definition
a source (living/nonliving) that serves as a source of infection
what are the general requirements for parasite survival
an infective stage
availability of a definitive host
a mode of exit from the host
what is the prepatent period (PPP)
period between infection with a parasite and the demonstration of the parasite in the body
why is knowing the PPP for each parasite important
testing during this time will not detect diagnostic stage
in what ways can parasites have a negative impact on the host
injury to animal
malnutrition and anemia
loss of fiber, meat, milk, etc
pruritus/decreased QOL
zoonosis
clinical signs of parasites depend on what
type of parasite
migration pattern through hosts
maturation/reproduction site of parasite in host
what are the 5 nematodes discussed in class
ascaroidea
strongyloidea
trichuroidea
oxyuroidea
filaroidea
ascaroidea common name
roundworms
strongyloidea common name
hookworms
trichuroidea common name
whipworm
oxyuridea common name
pinworms
filaroidea common name
heart worms
why is fresh feces needed to diagnose hookworms
eggs larvate rapidly in external environment
