Lecture 10-Host Finding

Question 1

2 methods of host finding

Answer 1

active and passive

Question 2

Active host finding promotes what type of parasite?

Answer 2

host-specialist

Question 3

passive host finding promotes what type of parasite?

Answer 3

host-generalist

Question 4

Autoinfection

Answer 4

parasite hatches before leaving host and re-infects

Question 5

Retroinfection

Answer 5

Parasite infective stages leave host but immediately re-enter

Question 6

Example of parasite that uses retroinfection

Answer 6

enterobius

Question 7

3 ways that parasites can transmit to offspring

Answer 7

• transplacental
• transmammary
• transovarian

Question 8

example of parasite that can transmit transplacentally

Answer 8

toxoplasma

Question 9

example of parasite that uses external host chemicals to find host

Answer 9

entobdella

Question 10

example of parasite that uses internal host hormones to synchronize life cycle

Answer 10

spilopsyllus

Question 11

example of parasite that uses paratenic host (worm)

Answer 11

heterakis

Question 12

example of parasite that alter snail host’s conspicuousness

Answer 12

leucochloridium

Question 13

example of parasite that alter deer host’s conspicuousness

Answer 13

parelaphostrongylus tenuis

Question 14

3 theories of fatal attraction

Answer 14

• tropism to specific areas of brain
• disruption of dopamine signalling in brain
• hormonal and epigenetic changes