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Females can also form alliances with other females for protection against aggressive males. [1] Researchers have observed such alliances in many other female-bonded species, including other Old World monkeys such as macaques , olive baboons , patas and rhesus monkeys, and gray langurs ; New World monkeys such as the capuchin; and prosimians ...
Because females do not need extra help raising their nests, males can afford to invest in multiple females. Nonetheless, male parental care is often found in many polygynous territorial bird species, [9] leading to female competition for male assistance. Most often, males will seek a second female to impregnate, once the first female has laid ...
Females spiders (Pisaura mirabilis) store more sperm from gift-giving males suggesting that sperm storage is under female control through cryptic sperm choice. [8] The increase in sperm storage from the gift giving males might allow females to produce "sexy sons" that also give gifts and increase the fitness of offspring.
harassment to miscarriage: amongst wild horses and baboons, the male will continually attack pregnant females until they miscarry. Pheromone -based spontaneous abortion in some rodents such as mice , a new male with a different scent will cause females who are pregnant to spontaneously fail to implant recently fertilised eggs.
The Coolidge effect can be attributed to an increase in sexual responsiveness, and a shortening of the sexual refractory period. [5] The evolutionary benefit to this phenomenon is that a male can fertilize multiple females. [6] The male may be reinvigorated repeatedly for successful insemination of multiple females. [7]
Capuchin monkey. A study at Yale–New Haven Hospital trained capuchin monkeys to use silver discs as money in order to study their economic behavior. The discs could be exchanged by the monkeys for various treats. During one isolated incident, a researcher observed what appeared to be a monkey exchanging a disc for sex. The monkey that was ...
Cops are warning residents in rural South Carolina to shut their doors and windows after at least 43 monkeys escaped from a bio-research lab. The rhesus macaques slipped out of an Alpha Genesis ...
In zoology, copulation is animal sexual behavior in which a male introduces sperm into the female's body, especially directly into her reproductive tract. [ 1 ] [ 2 ] This is an aspect of mating . Many aquatic animals use external fertilization , whereas internal fertilization may have developed from a need to maintain gametes in a liquid ...