Animal Info - Preuss's Monkey

(Other Names: Mono de Preuss, Preuss's Guenon, Preuß-Bartmeerkatze)

Cercopithecus preussi (C. lhoesti preussi)

Status: Endangered

1. Profile (Picture)
2. Tidbits
3. Status and Trends (IUCN Status, Countries Where Currently Found, History of Distribution, Threats and Reasons for Decline)
4. Data on Biology and Ecology (Weight, Habitat, Age to Maturity, Birth Rate, Maximum Age, Diet, Behavior, Social Organization, Mortality and Survival, Density and Range)
5. References

Profile

Pictures: Preuss's Monkey #1 (7 Kb JPEG) (Bioko Biodiv. Prot. Prog.); Preuss's Monkey #2 (juvenile female) (173 Kb GIF) and Preuss's Monkey #3 (infant female in threat pose) (204 Kb GIF) (Prim. Info Net)

Preuss's monkey is a darkish monkey with a white chin weighing up to 10 kg (22 lb). Although sometimes found in lowland forest, it is most common in montane forest up to 2500 m (8200'). It is terrestrial and eats fruit, leaves and insects.

Troops of Preuss's monkey average 17 individuals, including 1 adult male.

Preuss's monkey is found in western Cameroon, eastern Nigeria and on the island of Bioko (Fernando Po) in Equatorial Guinea. It is threatened by habitat loss and hunting.

Tidbits

*** Preuss's monkey occasionally raids crops.

Status and Trends

IUCN Status:

1986: Vulnerable
1988 - 1994: Endangered
1996 - 2004: Endangered (Criteria: A1cd+2cd) (Population Trend: Decreasing) (IUCN 2004)

Countries Where Preuss's Monkey Is Currently Found:

2004: Occurs in Cameroon, Equatorial Guinea (Bioko) and Nigeria. (IUCN 2004)

History of Distribution:

Preuss's monkey is found in western Cameroon, eastern Nigeria and on the island of Bioko (Fernando Po) in Equatorial Guinea.

Distribution Map (14 Kb GIF) (African Mammals Databank 2004)

Threats and Reasons for Decline:

Threats include habitat loss and hunting.

Data on Biology and Ecology

Weight:

Preuss's monkey weighs up to 10 kg (22 lb).

Habitat:

Preuss's monkey is most common in montane forest up to 2500 m (8200') and rare in lowland forest.

Priuss's monkey is found in the Guinean Forests of West Africa Biodiversity Hotspot (Cons. Intl. 2005).

Age to Maturity:

4 years.

Birth Rate:

Birth rate: 0.33 offspring/year (Fa et al. 1995).
Number of female offspring/mother/year: 0.17 (Slade et al. 1998).

Maximum Age:

31 years.

Diet:

The diet of the Preuss's monkey consists of fruit, leaves and insects.

Behavior:

Preuss' monkey is terrestrial.

Social Organization:

Preuss's monkey is found in troops averaging 17 individuals, including one adult male.

Mortality and Survival:

Observed average probability of a Preuss's monkey surviving any one year during the period from the age of first reproduction to the end of reproduction is 0.86 (Slade et al. 1998).

Density and Range:

Observed density: 9.9/sq km (26/sq mi) (Fa et al. 1995).

References

African Mammals Databank 2004, Bioko Biodiv. Prot. Prog., Burton & Pearson 1987, Cons. Intl. 2005, Fa et al. 1995, IUCN 1994, IUCN 1996, IUCN 2000, IUCN 2003a, IUCN 2004, Macdonald 1984, Oates 1996, Prim. Info Net, Slade et al. 1998

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