Guppies live in the streams and rivers of Trinidad and Tobago. The abundance of predaceous fish is highly variable from the stream headwaters to the lowland rivers. This variation in the abundance of predaceous fish results in variation in male guppy ________ from the stream headwaters to the lowland rivers.
A) mate selection
B) coloration
C) food selection
D) both mate selection and coloration
E) both mate selection and food selection

Question

Quizplus · Accepted Answer

Male guppy coloration varies significantly from the stream headwaters to the lowland rivers due to the variation in the abundance of predaceous fish. In areas with high predation, male guppies tend to have less vivid coloration as a survival strategy, while in areas with lower predation, males can afford to be more brightly colored, which is advantageous for attracting mates.

Guppies Live in the Streams and Rivers of Trinidad and Tobago