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Some females abort or resorb their own young while they are still in development after a new male takes over; this is known as the Bruce effect. [31] This may prevent their young from being killed after birth, saving the mother wasted time and energy. However, this strategy also benefits the new male.
A white-fronted capuchin sits in a tree. Cases of infanticide in white fronted capuchins have been attributed to resource competition. Infanticide in non-human primates occurs as a result of exploitation when the individuals performing the infanticide directly benefit from consumption or use of their victim. [1]
In many instances of nonparental infanticide in carnivores, the male of a species kills the young of a female to make her sexually receptive, e.g. brown bears. When one or two new male lions defeat and exile the previous males of a pride, the conqueror(s) will often kill any existing young cubs fathered by the losers. [3]
To counteract loss of their pups elephant seals conceive next year's offspring immediately after giving birth to this year's young, but delay implantation for 4 months. Female striped mice ( Rhabdomys pumilio ) in monogamous social groups do not experience reproductive suppression, but those living in communally breeding groups with high ...
In the US, only 25% of men between the ages of 18 and 29 identify as politically liberal, while 40% of women in the same age group do, according to a recent Gallup poll.
In a study on reproduction, researchers found that females were more likely to abort their young if they were first-time pregnancies and triplets (as opposed to smaller litters). Mortality rates of young were highest in spring and lowest in winter. Kid mortality rates increased with a higher proportion of ibex genes. [65]
Some animals starve to death shortly after birthing their young while others are eaten by their own young -- but these mothers make the ultimate sacrifice. Click through for 10 animal mothers that ...
Young women may have felt a greater urgency to act than their male partners in the wake of policy changes because pregnancy disproportionately affects them, said Dr. Angela Liang, a clinical ...