A particularly gruesome form of sexual interference is infanticide. Among Hanuman langurs (Presbytis entellus), the primate species in which infanticidal male intruders were first reported, it has been found that the behavior
A) increases a male's chance of siring the next infants.
B) is a result of crowded living conditions.
C) is not actually committed by the males that took over the troops.
D) results in infanticidal males killing all infants, whether they are related to him or not.

Question

Quizplus · Accepted Answer

Infanticide among Hanuman langurs is a strategy used by incoming males to bring the females back into estrus sooner, thereby increasing their own chances of siring offspring. By eliminating the infants that are not their own, these males reduce the interbirth interval, allowing them to father the next generation of infants more quickly.

A Particularly Gruesome Form of Sexual Interference Is Infanticide