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A Hanuman langur mother feeding an infant. Female Hanuman langurs are known to utilize paternity confusion through concealed ovulation. To protect their young from infanticide, many species of primate mothers will form social monogamous pairs to prevent paternal infanticide. In these pairs, the males will mate with other females but live ...
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 ...
Although maternal care is essential in many classes of vertebrates, it is the most prevalent in mammals, since the care from the mother is essential for feeding and nourishing their young. [1] Because the care exhibited by the mother plays such a large role in mammals, the role of the male is often very limited.
Scientists hypothesize that this is because many cheetah litters have cubs from different fathers and males would not want to kill any cubs in case they killed their own. [13] The promiscuity of female cheetahs helps to protect the threatened species not only by preventing infanticide but also by bringing greater genetic diversity. [ 15 ]
Some rodent species (most typically males) will take the chance to kill neonates that are unrelated to them should opportunity permit. There is thought to be several benefits by doing so, which not only include nutrition benefits (particularly where food is in short supply [8]) but also non-direct benefits, such as allowing access to more resources, improving reproductive opportunities and the ...
In mammals, females undergo endocrine changes during gestation and lactation that "prime" mothers to respond maternally towards their offspring. [68] [69] Paternal males do not undergo these same hormonal changes and so the proximate causes of the onset of parental behaviors must differ from those in females.
The mothers remained with their offspring, which suckled on a white, viscous liquid from their cloaca, experiencing rapid growth in their first week. This milk-like substance, rich in fats and carbohydrates, is produced in the mother's oviduct epithelium's hypertrophied glands, similar to mammal milk. The substance was released seemingly in ...
The mammary glands of mammals are specialized to produce milk, a liquid used by newborns as their primary source of nutrition. The monotremes branched early from other mammals and do not have the teats seen in most mammals, but they do have mammary glands. The young lick the milk from a mammary patch on the mother's belly.