What significant event occurs during infanticide that affects the mother’s reproductive cycle?

The significant event that occurs during infanticide that affects the mother’s reproductive cycle is the cessation of lactation. When a mother engages in infanticide, she may stop lactating, which is crucial for the care and nourishment of her current offspring. By halting lactation, the mother can potentially restore her reproductive capabilities more quickly. This process allows the mother to be in a better position to conceive again, thereby influencing her overall reproductive success.

Cessation of lactation is tied closely to a mother’s ability to reproduce, as lactation suppresses ovulation due to hormonal feedback mechanisms. When lactation ceases, the hormonal environment becomes more favorable for the resumption of ovulation and fertility. This can be an evolutionary advantage in competitive environments where resources are scarce or where offspring survival is not guaranteed.

While the other options might seem relevant, they do not directly relate to the immediate reproductive impact as clearly as the cessation of lactation does. Thus, the process of infanticide is not just about the act itself but also has significant implications for the mother's reproductive cycle and overall fitness in the environment.