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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.
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] The individual can become a resource: food ( cannibalism ); a protective buffer against aggression, or a prop to obtain maternal experience.
Female and male gerbils were put into one of four housing conditions (parents only, parents and siblings, siblings, and unrelated). Again, a pup test was conducted (same as previous study above), with each male and female to observe responses to an unfamiliar pup in the cage, while progesterone was measured via blood sample following the test.
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 ...
Infanticide is the killing of a neonate after birth. In zoology, this commonly refers to the killing and in some cases consumption of newborn animals by either a parent or an unrelated adult of the species.
A boa constrictor in the U.K. gave birth to 14 babies — without a mate. The process is called parthenogenesis, from the Greek words for “virgin” and “birth.” It tends to occur in ...
The provision of care, by either males or females, is presumed to increase growth rates, quality, and/or survival of young, and hence ultimately increase the inclusive fitness of parents. [ 2 ] [ 3 ] [ 4 ] In a variety of vertebrate species (e.g., about 80% of birds [ 5 ] and about 6% of mammals), [ 6 ] both males and females invest heavily in ...
Twice in the past week alone, former President Donald Trump has pushed his often-repeated falsehood that some U.S. states, in their zeal to protect abortion rights, allow for the killing of babies ...