Braude and colleagues (2001) studied the behavior of naked mole-rats both in captivity and in the field and found that most-but not all-naked mole rats are countershaded, with only queens, the small number of breeding males, newborns, and very old animals being completely pink. Taken together, their data were most consistent with the idea that the countershading is related to
A) camouflage.
B) protection from skin abrasions.
C) protection from ultraviolet light.
D) thermoregulation.

Question

Braude and colleagues (2001) studied the behavior of naked mole-rats both in captivity and in the field and found that most-but not all-naked mole rats are countershaded, with only queens, the small number of breeding males, newborns, and very old animals being completely pink. Taken together, their data were most consistent with the idea that the countershading is related to
A) camouflage.
B) protection from skin abrasions.
C) protection from ultraviolet light.
D) thermoregulation.

Quizplus · Accepted Answer

Countershading is a common form of camouflage in animals, where the coloration is darker on the upper side and lighter on the underside. This helps animals blend into their surroundings by counteracting the effects of sunlight and shadow. Given that most naked mole-rats exhibit countershading except for those that do not need to be active outside the burrow (queens, breeding males, newborns, and very old animals), it suggests that the primary function of this coloration pattern is for camouflage, to protect them from predators when they are outside their burrows.

Braude and Colleagues (2001) Studied the Behavior of Naked Mole-Rats