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Generally, parental care is expected to evolve from a previous state of no care when the costs of providing care are outweighed by the benefits to a caring parent. For example, if the benefit of increased offspring survival or quality exceed the decreased chance of survival and future reproductive success of the parent, then parental care may ...
Paternal care may be provided in concert with the mother (biparental care) or, more rarely, by the male alone (so called exclusive paternal care). 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.
Alloparental care has many benefits for the young as well as the biological parents of the young. It occurs when there is a high energetic command of the biological parents and the group living of these animals. [4] Alloparenting helps to reduce the stresses on these animals and reduce the overall energetic demands of having offspring. [4]
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 ...
Sexual selection is an evolutionary concept that has been used to explain why, in some species, male and female individuals behave differently in selecting mates. In 1930, Ronald Fisher wrote The Genetical Theory of Natural Selection, [3] in which he introduced the modern concept of parental investment, introduced the sexy son hypothesis, and introduced Fisher's principle.
It was renamed Animal Protection (1947–1977) and later became ASPCA Bulletin (1977–1981), ASPCA Quarterly Report (1981–1989), ASPCA Report (1989–1992) and Animal Watch: The Magazine of the American Society for the Prevention of Cruelty to Animals (1993–2004).
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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]