Disseminate Cryptococcosis in a guenon (Cercopithecus ascanius).

A novel simian immunodeficiency virus isolated from a Schmidt's guenon (Cercopithecus ascanius schmidti).

A novel simian immunodeficiency virus (SIV) was characterized from a Schmidt's guenon (Cercopithecus ascanius schmidti), which was housed in a local zoo. The virus infection was detected during a routine serological screening for antibodies that were cross-reactive with SIVmac antigens. Infection with an immunodeficiency virus was confirmed using an INNO-LIA HIV Confirmation assay. Using DNA is...

Gastrointestinal parasites of the guenons of western Uganda.

From January 1998 to December 2002, we collected 293 fecal samples from free-ranging individuals of the 4 guenon species of western Uganda, i.e., redtail guenons (Cercopithecus ascanius), blue monkeys (Cercopithecus mitis), l'hoesti monkeys (Cercopithecus lhoesti), and vervet monkeys (Cercopithecus aethiops), to quantify the prevalence of gastrointestinal parasites. Helminth eggs, larvae, and p...

Hardness of cercopithecine foods: implications for the critical function of enamel thickness in exploiting fallback foods.

We evaluate the hardness of foods consumed by sympatric Cercopithecus ascanius (redtail guenons) and Lophocebus albigena (grey-cheeked mangabeys), and consider how selection might operate to influence foraging adaptations. Since L. albigena has among the thickest dental enamel in extant primates and is commonly referred to as a hard-object consumer, we predicted that their diet would be harder ...

New Range Record for the Lesser Spot-nosed Guenon (Cercopithecus petaurista) in Southeastern Senegal

Diet and polyspecific associations affect spatial patterns among redtail monkeys (Cercopithecus ascanius)

Animals are predicted to be in closer conspecific proximity during feeding on clumped resources, such as fruits in a tropical rain forest, than when feeding on more dispersed resources, such as leaves or insects. Polyspecific associations are also predicted to affect inter-individual distance because the close proximity of more individuals presumably provides increased protection against predat...