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Examples of pair-bonded primate species: titi monkeys, owl monkeys, some species of marmosets and tamarins, many species of siamangs and gibbons. Group of saddle-back tamarins (Saguinus fuscicollis). One-female-multi-male groups are composed of one reproductive adult female and two or more adult male partners in the group. [4]
Extant primates exhibit a broad range of variation in sexual size dimorphism (SSD), or sexual divergence in body size. [4] It ranges from species such as gibbons and strepsirrhines (including Madagascar's lemurs) in which males and females have almost the same body sizes to species such as chimpanzees and bonobos in which males' body sizes are larger than females' body sizes.
A study on the association of alpha males and females during the non-breeding season in wild Capuchin monkeys examined whether alpha males are the preferred mate for females and, secondly, whether female-alpha status and relationship to the alpha-male can be explained through the individual characteristics and or social network of the female. [4]
Macaques have a very intricate social structure and hierarchy, with different classifications of despotism depending on species. [13] If a macaque of a lower level in the social chain has eaten berries and none are left for a higher-ranking macaque, then the one higher in status can, within this social organization, remove the berries from the ...
Crab-eating macaques are the only old-world monkey known to use stone tools in their daily foraging, and they engage in a robbing and bartering behavior in some tourist locations. The crab-eating macaque is the most traded primate species, the most culled primate species, the most persecuted primate species and also the most popular species ...
Female Barbary macaque with young suckling. The Barbary macaque is gregarious, forming mixed groups of several females and males. Troops can have 10 to 100 individuals and are matriarchal, with their hierarchy determined by lineage to the lead female. [28] Unlike other macaques, the males participate in rearing the young. [28]
Female and male in Shanghai Zoo. The golden snub-nosed monkey is found in groups ranging in size from 5–10 individuals to bands of about 600. [6] The social organization of this species can be quite complex. The one-male-units (OMUs) are the basic social unit within groups of golden snub-nosed monkeys with many of the OMUs forming a bigger group.
The chacma baboon (Papio ursinus), also known as the Cape baboon, is, like all other baboons, from the Old World monkey family. It is one of the largest of all monkeys. Located primarily in southern Africa, the chacma baboon has a wide variety of social behaviours, including a dominance hierarchy, collective foraging, adoption of young by females, and friendship pai