Terms Flashcards
Parasite
organism infecting the host
Host
the animal infected with a parasite
Definitive host
a host in which the sexual reproduction of the parasite occurs
Intermediate host
a host in which development, but not sex repro, of the parasite occurs
Paratenic host
host in which parasite doesn’t undergo further development, usually remains in cyst until DH eats it
Prepatent period
time from infection to when diagnostic stages can be recovered from a DH
Patent period
time period in which the parasite can be detected
Endoparasite
lives within the host body
Infection
parasitism by an endoparasite
Ectoparsite
lives on the outside of the host
Infestation
parasitism by an ectoparasite
Obligate parasite
must live as a parasite
Facultative parasite
can become parasitic if need exists
Continuous parasite
always on host
Intermittent parasite
come and go
Hyperparasitism
parasite living inside of a parasite
Parasitiasis
doesn’t cause outward sign of disease
Parasitosis
causes outward disease
Direct lifecycle
completed within one host
Indirect lifecycle
requires more than one host to complete lifecycle
Incidental parasite
parasite in a host in which it does not normally live
Erratic parasite
parasite that has wandered into an organ or tissue in which it does not normally live
Pseudoparasite
object that is mistaken for a parasite
Periodic parasite
parasite that makes short visits to its host
Reservoir host
vertebrate host in which a parasite occurs naturally which is a source of infection
Homoxenous parasite
parasite that has only one type of host - DH
Heteroxenous parasite
parasite that has more than one type of host - IH & DH
Stenoxenous parasite
parasite that has a narrow host range
Euryxenous parasite
parasite with a wide host range
Direct lifecycle
no IH in life cycle
Indirect lifecycle
one or more IH in life cycle
