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

Question

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

Quizplus · Accepted Answer

The red belly of a male stickleback acts as a sign stimulus, triggering an instinctive aggressive response from other males.

-In the Territorial Behaviour of the Stickleback Fish, the Red