Figure 39.2
-In the territorial behavior of the stickleback fish, the red belly of one male that elicits attack from another male is functioning as a(n)
A) pheromone.
B) sign stimulus.
C) fixed action pattern.
D) search image.
E) imprint stimulus.

Question

Figure 39.2
-In the territorial behavior of the stickleback fish, the red belly of one male that elicits attack from another male is functioning as a(n)
A) pheromone. 
B) sign stimulus. 
C) fixed action pattern. 
D) search image. 
E) imprint stimulus.

Quizplus · Accepted Answer

The red belly of one male that elicits attack from another male is functioning as a sign stimulus, which triggers a fixed action pattern of attack behavior in the competing male. Pheromones are chemical signals, search image is a mental image used in foraging, and imprint stimulus refers to a form of learning.

Figure 39.2 -In the Territorial Behavior of the Stickleback Fish, the Red