Niche in host

Question 1

What are the risks of living in a host?

Answer 1

• intestinal tract is consistently in motion
• range of proteolytic enzymes
• suite of immune defences

Question 2

What are the 2 migrations undergone by a mouse CESTODE (hymenolepsis)

Answer 2

ONTOGENIA
- strobila develops but scolex keeps in same place

CIRCADIAN
daily cycle to gain food from gut

Question 3

What do parasites compete for when coinfection occurs?

Answer 3

• attachment sites
• carbohydrates that are limiting
• avoiding byproducts that harm cestode

Question 4

How does the intracellular protozoa Giardia maintain station during its extraceullar phase?

Answer 4

has pair of suckers

Question 5

Cestodes have __ to maintain station.

Answer 5

scolexes

Question 6

Trematodes have ___ ___ to maintain station on gut wall

Answer 6

muscular suckers t

Question 7

Acanthocephalans have ___ ___ to maintain station

Answer 7

thorny proboscis

Question 8

Why don’t nematodes have structures for maintaining station?

Answer 8

they are pretty free living in gut mucosa

Question 9

Hookworms have large __ cavities

Answer 9

buccal

Question 10

What is a hypostome?

Answer 10

mouthpart used by ticks and mites

Question 11

Tsetse fly is adapted for __ and slashing to form a __ ___

Answer 11

piercing

blood pool

Question 12

Mosquitoes are adapted for what?

Answer 12

piercing and sucking

Question 13

Upper lip

Answer 13

labrum

Question 14

Lower lip

Answer 14

labium