Olive indication
| Olive indication | ||||||||||||
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Olive indication (above) and top indication |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Cercocebus agilis | ||||||||||||
| Milne-Edwards , 1886 |
The olive tree ( Cercocebus agilis ) is a primate species from the family of vervet monkeys (Cercopithecidae).
features
Olivm details reach a head-torso length of around 45 to 65 centimeters, plus a tail of approximately the same length, they weigh 5 to 13 kilograms, with the males being significantly larger than the females. Their fur is gray-green or olive-green on the upper side, the belly is lighter, often whitish.
distribution and habitat
Olive trees live in central Africa. Their distribution area extends from Cameroon and Equatorial Guinea via the north of Gabon and the Republic of the Congo to the northern Democratic Republic of the Congo . Here the Congo River forms the southern border of their habitat, south of it lives the related gold belly moss . Their habitat are forests near rivers or lakes that are at least temporarily flooded.
Presumably, the destruction of the habitat represents a threat to the species. However, the IUCN lists the species as "not endangered" ( least concern ).
Way of life
Like all Old World monkeys, they are diurnal and sometimes stay on the ground, the males more than the females. They live together in groups of around 8 to 18 animals made up of one or more males, several females and their offspring.
The males lead and protect the group. They utter loud screams that both hold the group together and alert other groups to their own presence.
Olive trees are omnivores, but prefer to eat fruit. They also consume seeds, nuts, buds and mushrooms, but also bird eggs as well as insects and other small animals.
Systematics
In the past, the olive indication was considered a subspecies of the bonnet indication (as Cercocebus galeritus agilis ), it has only been regarded as an independent one since the 1970s. The gold belly indication in turn was considered a subspecies of the olive indication and has been listed as a separate species since 2001.
Individual evidence
- ↑ Cercocebus atys in the endangered Red List species the IUCN 2011. Posted by: J. Hart, T. M. Butynski, J. Kingdon, 2008. Accessed June 30, 2011th
literature
- Thomas Geissmann : Comparative Primatology. Springer-Verlag, Berlin et al. 2003, ISBN 3-540-43645-6 .
- Don E. Wilson, DeeAnn M. Reeder (Eds.): Mammal Species of the World. A taxonomic and geographic Reference. Johns Hopkins University Press, Baltimore MD 2005, ISBN 0-8018-8221-4 .