Studies from the Lomako Forest in Zaire suggest that A. nigroviridis, like other Lomako Forest monkeys, is under a substantial amount of pressure from predators. These predators include the crowned hawk eagle, snakes, and pygmy chimapanzees. In response to these predators, many cercopithecids form poly-specific groups in the various forest types (McGraw 1994).
Perception Channels: tactile ; chemical
IUCN Red List of Threatened Species: least concern
Many cercopithecids, including A. nigroviridis, are hunted for their meat, and they are used in the biomedical research industry (Lawlor 1979).
Little is known about the overall natural history of A. nigroviridis; however, it is known that they forage on the ground and in shallow water (Walker 1975). The diet of A. nigroviridis includes fruit, leaves, and small invertebrates. http://www.zooregon.org/cards/monkey.allens.swamp.htm
Animal Foods: insects
Plant Foods: leaves; fruit
Primary Diet: omnivore
The range of Allenopithecus nigroviridis is from the Upper and Eastern basins of the Congo to Western Zaire (Walker 1975).
Biogeographic Regions: ethiopian (Native )
Studies from the Lomako Forest in Zaire suggest that A. nigroviridis is found only in the swamp forests. This differs from many other cercopithecids in that region, which occupy primary, secondary, and Mbau forests. The species is arboreal and at least semi-terrestrial (McGraw 1994).
Terrestrial Biomes: forest ; rainforest
These primates are thought to live up to 20 years.
Average lifespan
Status: wild: 23.0 years.
Other Physical Features: endothermic ; bilateral symmetry
Average mass: 4702.5 g.
Again little is known about the specific reproductive system of A. nigroviridis. Like other cercopithecids, females generally give birth to one offspring at a time. The young are typically weaned at 2.5 months (Hayssen and Van Tienhoven 1993). The length of estrus and menses is unknown as well as the breeding season. Allenopithecus nigroviridis can live up to 2 decades. ( http://www.zooregon.org/cards/monkey.allens.swamp.htm)
Average number of offspring: 1.
Average weaning age: 2.5 months.
Key Reproductive Features: iteroparous ; gonochoric/gonochoristic/dioecious (sexes separate); sexual ; viviparous
Average birth mass: 221 g.
Average number of offspring: 1.
Females nurse and care for their young for two and a half months.
Parental Investment: pre-fertilization (Provisioning, Protecting: Female); pre-hatching/birth (Provisioning: Female, Protecting: Female); pre-weaning/fledging (Provisioning: Female, Protecting: Female); extended period of juvenile learning
