Cercopithecidae
Primates
Mammalia
about 160 days
1 per litter
No specific programs are known.
It feeds on fruits, leaves, seeds, flowers, insects, eggs, small reptiles, and crustaceans. Its diet is highly opportunistic and varies according to seasonal availability.
In the wild: Up to 27 years. In captivity: Over 30 years.
The green monkey (Chlorocebus sabaeus) is a medium-sized primate characterized by its greenish-golden fur and remarkable ecological adaptability. It inhabits a variety of environments, from savannas to urban areas, displaying an omnivorous diet that includes fruits, leaves, insects, and small vertebrates. Its morphology presents sexual dimorphism, with males larger than females, and a distinctive blue coloration on the scrotum of males. This species is diurnal and displays both arboreal and terrestrial behaviors, with a complex and hierarchical social structure. Reproduction is seasonal, with a single offspring per birth and a gestation period of approximately 160 days. Juveniles reach sexual maturity between 2 and 5 years, depending on the sex. The vervet monkey has been the subject of scientific studies, especially in biomedical research, due to its susceptibility to various human diseases and its use in the production of cell lines for vaccines.
These cercopithecines are highly social, living in groups that can range from small family nuclei to communities of more than 80 individuals. These groups feature hierarchical structures, with dominant males and complex relationships between members. Communication is sophisticated, using a variety of specific vocalizations to warn of different types of predators, as well as facial expressions and body postures to convey emotional and social states. They are diurnal, with activities that include foraging, play, and social grooming, which strengthens bonds within the group. Although they are arboreal, they spend a significant amount of time on the ground, especially during feeding. Their adaptable behavior allows them to coexist in human-modified environments, although this sometimes leads to conflict, especially in agricultural areas where they can be considered pests.
Classified as “Least Concern” by the IUCN, the vervet monkey maintains stable populations throughout much of its native range. However, it faces significant threats, primarily due to habitat loss due to agricultural expansion and urbanization, as well as hunting for consumption and the pet trade. In some regions, particularly in West Africa, it is considered an agricultural pest, leading to conflicts with farmers and, occasionally, lethal retaliation. Although there are no specific captive breeding programs for this species, its listing (as a cercopithecus) in CITES Appendix II regulates its international trade. Effective conservation requires integrated approaches that address both habitat protection and conflict mitigation with humans, in addition to awareness-raising campaigns about the species' ecological importance.
The name “green monkey” comes from the greenish glow its fur takes on in sunlight, although its actual color is a mixture of gold and gray.
Males have a very visible turquoise scrotum, which is a secondary sexual sign linked to social status.
They are famous for their ability to emit alarm calls specific to the type of predator, which has been studied as an example of “proto-language” in primates.
In the Caribbean islands, where they were introduced in the 17th century, they have developed urban habits, including stealing fruit, bread, and alcoholic beverages from tourists.
In Barbados, they have learned to cross streets by watching the traffic lights and to open refrigerators or backpacks.
Despite being an African species, there are currently more individuals of Chlorocebus sabaeus living in Caribbean islands than in some West African countries.
In biomedical research, kidney cells from this species have been used to produce vaccines, including those for polio and COVID-19.
They can jump more than 2 meters between branches, thanks to their agility and coordination.
Infants develop distinct facial coloring in their first weeks, which helps identify them within the group.
They are very curious and tend to explore new objects, which makes them popular but also problematic in urban areas.
Mothers may adopt orphaned offspring within the group, a rare behavior among non-hominoid primates.
They are right-handed or left-handed depending on the individual, showing manual laterality when handling food.
The young play cooperatively and compete for the attention of adults, thus strengthening future social relationships.
During lean periods, they adjust their diet to include more insects, bark, and flowers.
They have remarkable spatial memory, remembering places with abundant food for years.
Some urban groups show imitative behavior after observing human actions, such as opening bags or containers.
In controlled experiments, they have shown moderate levels of empathy and altruistic behavior toward familiar individuals.
There are subtle differences in vocalization between populations, which some scientists consider a primitive form of dialect.
Their canines are not only used for defense or feeding, but also as a visual signal during social confrontations.
In natural ecosystems, they play an important role in seed dispersal, contributing to the maintenance of dry forests and savannas.
