Q4.7. The Eastern Kingbird hunts by catching flying insects in mid-air, an appro

Question

Q4.7. The Eastern Kingbird hunts by catching flying insects in mid-air, an approach which requires impressive and energetic acrobatic maneuvers. What type of functional response do you expect the Kingbird will have to increasing insect prey abundance? O Type l Type II Type III Submit Q4.8. Now imagine what might happen in warmer weather. The Kingbirds from the previous question regulate their body temperature and are relatively unaffected by the change. The insects, however, move much more swiftly in the warmer temperatures, and are less easily caught. How would this change the functional response of the birds? The functional response curve will shift up. O The functional response curve will shift down. O The functional response curve won't change at all. It will change to one of the other types of response.

Explanation / Answer

The answer is B. Functional response to predation is based on two factors:

1. The search of prey

2 . Prey handling( chasing , killing, eating and digesting)

The graph 2 represent this condition.

Now when the temperature increases.... The predator efficiency has not been affected as in question. But the prey ability to evade the predator has increases.

This means that the 2nd factor increases for the predator, as it has to increase it's chasing and hence the number of prey caught will subsequently decrease, shifting graph down.

So the graph will shift towards right or move down.

There is also mathematical proof for this.

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