Exam 3- Parasit- General Concepts Flashcards
A non-mutual symbiotic relationship between species, where one species, the parasite, benefits at the expense of the other, the host.
Parasitism
DH
Definitive Host
FH
Final Host
IH
Intermediate Host
A host that is required for life, can be a transport host, but transport host doesn’t have to be intermediate
intermediate host
PH
Paramedic Host
A host that is not required for life, helps get parasite into final host, can be a transport host
Paratenic Host
A host that helps with transport
Transport Host
The host that the parasite doesn’t belong to, can be a dead end, the parasite can’t survive
Aberrant Host
4 Modes of Infection
1) Oral
2) Skin Penetration
3) Injection
4) Transplacental
Oral mode of Infection
- Egg in enviro
- Oocyst in enviro
- Larvae in enviro
- Larvae in other host (eat other host)
- Cyst in other host
- Larvae in milk
-Stages inside and outside of a host
Environmental Dependence
1 Host
Direct Life Cycle
Requires 2 or more hosts
Indirect Life Cycle
Advantages of sexual reproduction
Genetic Diversity
