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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.
Filial cannibalism occurs when an adult individual of a species consumes all or part of the young of its own species or immediate offspring.Filial cannibalism occurs in many species ranging from mammals to insects, and is especially prevalent in various types of fish species with males that engage in egg guardianship. [1]
One such occurrence is known as the Bruce Effect, in which female primates may abort the pregnancy when presented with a new male. This has been observed in wild geladas , where a majority of females abort pregnancies following the displacement of a dominant male. [ 29 ]
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]
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 ...
When he complained about the boy's unreliability, the man reacted by killing the boy "with a thrust of his spear", and one day later his teenage son "nonchalantly remarked that – 'That slave boy was very good eating – he was nice and fat. ' " [84] [85] According to Herbert Ward, who witnessed and documented the incident, "the pot" was the ...
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 ...
Men must play their part How these potential attacks on female contraceptives play out over time is unclear. What is clear is that 46% of all pregnancies in the U.S. are unintended .