How Monkeys See The World by Dorothy Cheney and Robert Seyfarth (1990) is the result of many years of close observational research on vervet monkeys in Africa. Vervets are members of the Family Cercopithecidae who are monkeys who live in Africa and Asia. They are more closely related to apes and hominoids than are New World Monkeys, as their line and the hominoids diverged after the New World M...

The evolution of the red-green visual subsystem in trichromatic primates has been linked to foraging advantages, specifically the detection of either ripe fruits or young leaves amid mature foliage, and to the intraspecific socio-sexual communication, namely the signal of the male rank, the mate choice and the reproductive strategies in females. New data should be added to the debate regarding ...

We conducted a chronic feeding study in vervet monkeys (Cercopithecus aethiops) over 13.5 years. The experimental design consisted of two dietary treatment groups, each including males and females, fed varying levels of culture material of Fusarium verticillioides (Sacc.) Nirenberg (= F. moniliforme Sheldon) strain MRC 826 mixed into their daily food ration. Two females were included as treatme...

Abstract For primates, canopy bridges can reduce the road barrier effect. Yet little information exists to predict species bridge use. We examined use across a 9 km suburban in Diani, Kenya, three survey years ( N : 21 = 2004, 27 2011, 29 2020) by four sympatric of monkeys. The asphalt is 6 m wide with 50 km/h speed limit. Roadside observers recorded ground ) and crossings, crossing direction, ...

T change in the refractive and stain­ ing properties of bone which occurs after pressure is applied to it was first described by Dreyer1 who applied pressure to the skull? of dead Vervet monkeys by strapping elastic bands under tension around them. The refractive and staining properties of the inner and outer tables of the calvaria of untreated monkeys differ in many sections cut from these bon...