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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.
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]
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]
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 ...
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]
Vertebrate maternal behavior is a form of parental care that is specifically given to young animals by their mother in order to ensure the survival of the young. [1] Parental care is a form of altruism, which means that the behaviors involved often require a sacrifice that could put their own survival at risk. [1]
Marsupials are a diverse group of mammals belonging to the infraclass Marsupialia.They are natively found in Australasia, Wallacea, and the Americas.One of the defining features of marsupials is their unique reproductive strategy, where the young are born in a relatively undeveloped state and then nurtured within a pouch on their mother's abdomen.
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 ...