Thermoregulation

Question 1

What is the heat conductivity of air vs water?

Answer 1

• 1:25

Question 2

What is the heat capacity of air vs water?

Answer 2

• 1:3000

Question 3

What does the heat conductivity and capacity difference between air and water mean?

Answer 3

• increased chances of hypothermia in cold water

Question 4

What is the gill SA to body SA ratio in contact with water?

Answer 4

• high gill SA: body SA (5-10x more)

Question 5

What is high SA needed for in water?

Answer 5

• gas exchange
• heat loss (conductive)

Question 6

Most fish have ___ metabolic rates. what is this a consequence of?

Answer 6

• low
• consequence of low body temp

Question 7

There are high rates of ___ heat loss in water

Answer 7

• convective