Endler (1978) found that among wild populations of guppies (Peocilia reticulata), when predation pressure is low, the males shift to
A) increases in diversity of colors and patterns.
B) less conspicuous colors.
C) reductions in the number of spots.
D) reductions in the size of spots.

Question

Quizplus · Accepted Answer

Endler's research demonstrated that in environments with low predation pressure, male guppies tend to exhibit a greater diversity of colors and patterns. This is likely because the reduced threat from predators allows for the expression of more conspicuous physical traits, which can be advantageous in attracting mates.

Endler (1978) Found That Among Wild Populations of Guppies (Peocilia