Parasitology Exam-parasitism Flashcards
1
Q
Types of hosts
A
- due to stage
- due to specificity
- due to epizootiologic characteristics
2
Q
Definite/final host
A
- Adult stage of the parasite
- stages of sexual reproduction
3
Q
Intermediate host
A
- larval stages
- stages without sexual reproduction
4
Q
Specificity of host
A
- Type=the host where parasite was first described
- obligatory=essential to complete life cycle
- principal=the most specific host
- accidental=not usual host but can be parasitized
- artificial=expremental in non-natural hosts
- paratenic= not necessary but facilitates
5
Q
Epizootiologic characteristics
A
Vectors
- mechanic=without development
- biological=with development
- multiplicative=multiplication in host
- cycloevolutive=evolution, no multiplication
- cyclomultiplicative=both evolution and multiplication
- reservoir= harbors without direct suffering
- bridge=parasite bearing unusual shape, often in connection of biological life cycles
6
Q
Metabolic dependence
A
- obligated=needed to complete life cycle
- facultative=life cycle can be completed
- accidental=not usual place
7
Q
Host spectrum
A
- eurixenic=wide
- stenoxenic=narrow
- oligoxenic=few
- monoxenic=unique
8
Q
Number of hosts
A
- monoxenic=one definitive host, direct
- heteroxenic=one D.H, with one or more I.H, indirect
- autoheteroxenic=same animal acting as both D.H and I.H depending on parasite stage
