Chapter 40.4, Problem 3CC

Summary Introduction

To predict:

The likely pattern of dispersion for male sticklebacks, if other male species invade its nesting territory.

Concept introduction:

The male stickleback fishes have a fixed behavioral response according to the stimuli, which the entry of the other sticklebacks inside the nest of a particular male stickleback fish. The fishes turn socially aggressive and develop a red color on the skin. This color acts as a warning signal for the variety of the other fishes near its place of living.