Parasites: General concepts Flashcards
The 4 parasites of veterinary importance (Phylum)
Phylum Nemathelminthes (roundworms), Platyhelminthes (Flatworm), Subkingdom Protozoa, Phylum Arthropoda
Class in Phylum Nemathelminthes
Class Nematoda (Roundworms)
Classes in Phylum Platyhelminthes
Class Cestoda (Tapeworms),,Class Trematoda (Flukes)
Phylums in Subkingdom Protozoa
Phylums: Mastigophora, Apicomplexa
Phylum Arthropoda contain:
Insescta and Arachnida
Parasitism definition
a non-mutual symbiotic relationship between species, where one species, the parasite, benefits at the expense of the other, the host
Do parasites reproduce at a faster rate than their host?
Yes
Host Specific
needs many ways to be able infect host because it is the only host it can infect
Broad spectrum
doesn’t need many ways of infecting the host because there are multiple species to choose from
Must there always be a definitive host or a final host?
Yes. One or the other
aberrant host
dead end host
paratenic host
not required for the development of the parasite
definitive host
the host in which the parasite reaches maturity in
Final host
like the definitive host. it is the host that the parasite prefers and would like to reproduce in
Intermediate host
a host that supports parasite until it can reach final host. does not reproduce here
transport host
the host that carries parasites between definitive hosts. does not develop in transport host
Biological vector
does not cause disease itself but spreads pathogen from host to host
Transplacental infection
occurs through the placenta. Fetus is infected
direct lifecycle requires how many hosts?
1 host
indirect lifecycle requires how many hosts?
2 hosts
definitive host only have one host true or false
true
sexual lifecycle has what type of diversity?
genetic diversity
Sexual reproduction has a long or short lifecycle?
long lifecycle
sexual reproduction requires how many parasites?
two, male and female
