Stress & Immunity

Question 1

4 stages of stress response

Answer 1

1. normal state
2. alarm/reaction state
3. resistance stage (homeostatic adaptation to stimuli)
4. exhaustion stage (adaption no longer adequate to maintain homeostasis)

Question 2

4 sources of stress

Answer 2

1. H2O quality
2. husbandry - culture
3. behavioural interactions
4. parasites and pathogens

Question 3

clinical signs of ammonia poisoning

Answer 3

• hyper excitability
• gill hyperplasia and hypertrophy (increase in cells, decrease in O2 exchange)
• lethargy
• purple gills
• loss of appetite

Question 4

brown blood disease caused by..?

Answer 4

nitrite poisoning