Suppose that a predatory fish eats only minnows and the predatorprey interaction

Question

Suppose that a predatory fish eats only minnows and the predatorprey interaction follows LotkaVolterra dynamics. The intrinsic growth rate of minnows in the absence of predators is 0.2 per month, and the mortality rate of the predatory fish in the absence of minnows is 0.1 per month. The capture efficiency rate is 0.004, and the efficiency at which minnow biomass is converted into predator biomass is 0.25. The minnow population size will increase only if the number of predatory fish is...?

A. above 50

B. equal to 50.

C. below 100.

D. below 50.

Explanation / Answer

Ans:

D.BELOW 50

The Lotka–Volterra equations, also known as the predator–prey equations, are a pair of first-order, nonlinear, differential equations frequently used to describe the dynamics of biological systems in which two species interact, one as a predator and the other as prey.

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