18) In the cliff swallows it is common to find a blood-sucking parasite, an inse
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Question
18) In the cliff swallows it is common to find a blood-sucking parasite, an insect known as the swallow bug. This bug often clings to the feet of birds, can move from swallow to swallow within colonies, and it is responsible for most of the nest failures and juvenile mortality. The following graph shows a correlation between the colony size and the number of bugs per nest. What conclusion(s) can you make, based on this study?
As colony size of the cliff swallows increases, the number of swallow bugs per nest decreases.
As group size increases, the cost of parasitism increases.
Group living for swallows is practically cost free and provides many benefits.
all of the above
As colony size of the cliff swallows increases, the number of swallow bugs per nest decreases.
As group size increases, the cost of parasitism increases.
Group living for swallows is practically cost free and provides many benefits.
all of the above
Explanation / Answer
AS GROUP SIZE INCREASES PARASITISM BY THE BUGS INCREASES. THE NUMBER OF BUGS INCREASES AS THE COLONY SIZE INCREASES AND MORTALITY RATE IS HIGH AS COLONY SIZE IS HIGH DUE TO THE BUGS
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