CAR Parasitology Flashcards

1
Q

what is parasitism

A

only one organism benefits from the interaction but to the detriment of the other

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what is mutualism

A

organisms of different species both benefit from the interaction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what is commensalism

A

only one organism benefits from this association without causing any harm to the second organism (clown wish and anemone)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

list the 4 types of parasites and define them

A
  • facultative: may survive in the absence of the host
  • obligate: at some or all stages of the life cycle, cannot survive in the absence of the host
  • endo-oarasite: lives internally inside the host
  • ecto-parasite: lives in/on the outer body surfaces of the host
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

list the types of hosts and define them

A
  • definitive: the host in which the parasite sexual reproduction occurs
  • intermediate host: the host in which parasite asexual reproduction occurs
  • permissive host: not usually used by parasite but still favours life cycle completion
  • non-permissive host: host in which the parastie cannot complete the life cycle
  • reservoir host: temporary host used in abesnce of natural host
  • paratenic host: host the parasite without any further development
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what is a mechanical vector vs biological vector

A
  • mechiancal vector: a vector which mechanically spreads parasite and is not utilised in the parasite life cycle
  • biological vector: a vector needed by the parasite to complete part of its life cycle
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

how are parasites spread to a new host

A
  • ingestion of infective stage
  • skin penetration by infective stage
  • skin inoculation by insect bite
  • direct animal to animal contact
  • trans placental
  • sexual intercourse
  • inhalation

via: food, water, soil, airborne, vector borne, mother to fetus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what is a direct parasite life cycle

A

parasitic stages develop in/on 1 host

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what is an indirect parasite life cycle

A

intermediate host is needed for the development of some stage of the parasite

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what information is important to know about the life cycle of a parasite

A
  • type of life cycle
  • who serves as definitive host
  • who serves as intermediate host
  • what is the infective stage
  • what is the route of infection
How well did you know this?
1
Not at all
2
3
4
5
Perfectly