Arthropods 3

Question 1

Ectoparasitic blood-feeding

Answer 1

nutritious
easy to digest
dangerous
e.g.) adult fleas and haemolymph-feeding

Question 2

Stages of blood feeding

Answer 2

Clot initiation, clot formation, fibrinoiysis

Question 3

Blood-feeding, attracted by…

Answer 3

CO2 (Human breath 4.5%)
fatty acids, octanol, ammonia, phenols in urine
heat, vibrations

Question 4

Myiasis

Answer 4

larvae are the parasites

e.g.) Botfly

Question 5

Social parasitism

Answer 5

often between closely related species

e.g.) Bees

Question 6

Kleptoparasitism

Answer 6

one animal takes food from another

Question 7

Parasitoidism

Answer 7

eventually kill hosts

Question 8

Hyperparasitoidism,

Answer 8

attacks parasitoids (can be endoparasites or ectoparasites)

Question 9

Parasites, find hosts through…

Answer 9

photosensory cues, thermosensory cues (Sensilla on antennae detect IR radiation)

Question 10

Parasitoids can;

Answer 10

overcome host immunity & manipulate the host

Question 11

Host Defence against parasites

Answer 11

encapsulates invaders