• Publications
  • Influence
Western lowland gorilla diet and resource availability: New evidence, cross‐site comparisons, and reflections on indirect sampling methods
The densities of these two species are similar across sites for which data are available, in spite of major differences in forest structure, suggesting they may be key species in determining gorilla density. Expand
Intestinal Parasites in Gorillas, Chimpanzees, and Humans at Mondika Research Site, Dzanga-Ndoki National Park, Central African Republic
Compared to other African ape sites, the gorillas and chimpanzees at Mondika appear to have high prevalences of intestinal parasites, which may be the result of the high proportion of swamp and seasonally flooded areas, which provide optimal viability for parasite eggs and ova. Expand
Influencing Western Gorilla Nest Construction at Mondika Research Center
It appears that when gorillas in this population build nests, they do so in response to both wet and cool conditions, and independently of diet, ranging, or group size. Expand
CSF testosterone and 5-HIAA correlate with different types of aggressive behaviors
It is concluded that high CSF free testosterone concentrations areassociated with competitive aggression, while low CSF 5-HIAA concentrations are associated with severe aggression which results from impaired impulse control, and perseverance. Expand
Comparative density, demography, and ranging behavior of Barbary macaques (Macaca sylvanus) in marginal and prime conifer habitats
  • P. Mehlman
  • Biology
  • International Journal of Primatology
  • 1 August 1989
The mean home range is five times larger in the Ghomara, roughly inversely proportional to the sixfold decrease in macaque density, confirming Caldecott’s (1986) principle that, in macaques species, range size adjustments are a primary proximate response to poor-quality habitat. Expand
CSF 5-HIAA, testosterone, and sociosexual behaviors in free-ranging male rhesus macaques in the mating season
It is concluded that the lack of correlation between intense and severe aggression and CSF 5-HIAA in the mating season may reflect the use of high intensity aggression in 'normative' male-male competition over access to reproductively active females. Expand
Food resources of the wild Barbary macaque (Macaca sylvanus) in high‐altitude fir forest, Ghomaran Rif, Morocco
A comparison of the study area with the prime habitat of the Barbary macaque-the high-altitude cedar forests of the Moroccan Moyen Atlas-indicates that climate and vegetation physiognomy are highly similar in both regions. Expand
Aspects of the Ecology and Conservation of the Barbary Macaque in the Fir Forest Habitat of the Moroccan Rif Mountains
The Moroccan fir forest (Abies pinsapo Boiss.) is a unique ecosystem to North Africa and is limited to less than 5,000 hectares within the Rhomara region in the Western Rif. This habitat representsExpand
Intergroup interactions in wild Barbary macaques (Macaca sylvanus), Ghomaran Rif mountains, Morocco
It is concluded that current data on intergroup interactions in Barbary macaques conform to the predictions of Wrangham's model of mutually competitive female‐bonded, multimale groups. Expand