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Infanticide not only reduces intraspecific competition between the incumbent's offspring and those of other males but also increases the parental investment afforded to their own young, and allows females to become fertile faster. [12] This is because females of this species, as well as many other mammals, do not ovulate during lactation. It ...
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.
In polling collected by YouGov, 20 per cent of children without a bed felt tired at school and 13 per cent struggled during physical activities, while one in 12 parents said their children were ...
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.
New research shows the far-reaching effects of the abortion bans that have proliferated the United States since the Supreme Court struck down Roe v. Wade in 2022. Three new studies have provided ...
Women who get abortions are typically in their 20s and already have children, according to the Guttmacher Institute, a research-focused nonprofit organization that supports abortion rights. Nearly ...
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]
With about 500 more deaths than expected among the 22,000 additional births, the infant mortality rate for births linked to abortion bans – 24 deaths for every 1,000 births – was about four ...