Lab: Predator vs. Prey

Question 1

Change in Population (formula)

Answer 1

∆N(t) = N(t) (r) ((K-N) / K)

in a single population

Question 2

Prey Growth Equation (formula)

Answer 2

∆H = rH - pHP
where, r = rate of reproduction
H = prey population
P = predator population
p = predation constant

Question 3

Predator Growth Equation (formula)

Answer 3

∆P = apHP - dP
where, P = predator population
a = birth constant (“not on test, but know”)
H = prey population
d = percentage pf individuals in a predator population that die between generations
p = predation constant

Question 4

Functional Response: Type 1

Answer 4

Based on Catch-rate

• High slope
• Proportional to prey-species density

Question 5

Functional Response: Type 2

Answer 5

Based on Catch-rate

• Reaches maximum and plateaus
• Considers that the consumer is limited by its capacity to process food

Question 6

Functional Response: Type 3

Answer 6

New species

-takes in account if unusual-looking prey come in, they are selected at a lower frequency

Question 7

Catch-rate Equation (formula)

Answer 7

Catch-rate = (AN) / (1 + T(h) AN)
where, A = the attach rate
N = prey population
T(h) = handling time