In a hypothetical environment, fishes called pike-cichlids are visual predators of algae-eating fish (in other words, they locate their prey by sight). If a population of algae-eaters experiences predation pressure from pike-cichlids, which of the following is least likely to be observed in the algae-eater population over the course of many generations?
A) selection for drab coloration of the algae-eaters
B) selection for nocturnal algae-eaters (active only at night)
C) selection for larger female algae-eaters, bearing broods composed of more, and larger, young
D) selection for algae-eaters that become sexually mature at smaller overall body sizes
E) selection for algae-eaters that are faster swimmers
A hypothetical scenario illustrating the process of chemical selection
Some male birds and mammals congregate in communal courting grounds called leks.
Darters such as this male greenside darter form a diverse and distinctive subfamily of fishes within
Examples of visual fields of simple cortical cells.
Human impacts and the built environment
Visual Cliff Experiment