Lecture 10-Host Finding Flashcards
2 methods of host finding
active and passive
Active host finding promotes what type of parasite?
host-specialist
passive host finding promotes what type of parasite?
host-generalist
Autoinfection
parasite hatches before leaving host and re-infects
Retroinfection
Parasite infective stages leave host but immediately re-enter
Example of parasite that uses retroinfection
enterobius
3 ways that parasites can transmit to offspring
- transplacental
- transmammary
- transovarian
example of parasite that can transmit transplacentally
toxoplasma
example of parasite that uses external host chemicals to find host
entobdella
example of parasite that uses internal host hormones to synchronize life cycle
spilopsyllus
example of parasite that uses paratenic host (worm)
heterakis
example of parasite that alter snail host’s conspicuousness
leucochloridium
example of parasite that alter deer host’s conspicuousness
parelaphostrongylus tenuis
3 theories of fatal attraction
- tropism to specific areas of brain
- disruption of dopamine signalling in brain
- hormonal and epigenetic changes