Question

Consider an ecosystem where lynx are the only predators of snowshoe hares, and their interaction follows the Lotka-Volterra predictions. Match the scenario on the left with the term in the equations that would be most directly affected.

A) A parasite is introduced to the ecosystem that significantly shortens the lifespan of lynx.
B) The number of hares that each lynx consumes in a year increases.
C) The number of offspring that a hare can produce in each litter increases.
D) The number of additional offspring that a lynx can support if it consumes more hares increases.
E) The carrying capacity of hares in the ecosystem increases.

Answer 1

In the Lotka-Volterra predator-prey model, different scenarios can directly affect specific terms in the predator and prey equations.

Step-by-step explanation:

In the Lotka-Volterra predator-prey model, the interaction between lynx and snowshoe hares is represented by a set of equations. Let's match the scenarios with the relevant terms:

• A) A parasite shortening the lifespan of lynx: This would directly affect the term representing the death rate of lynx in the predator equation.
• B) Increase in the number of hares consumed by each lynx: This would affect the term representing the birth rate of lynx in the predator equation.
• C) Increase in the number of offspring per hare litter: This would affect the term representing the birth rate of hares in the prey equation.
• D) Increase in the additional lynx offspring if more hares are consumed: This would affect the term representing the birth rate of lynx in the predator equation.
• E) Increase in the carrying capacity of hares: This would affect the term representing the carrying capacity of hares in the prey equation.