Dennis Twinomugisha

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Understanding the determinants of a species’ range use aids in understanding their ecological requirements, which in turn facilitates designing effective conservation strategies. The ranging behaviour of golden monkeys (Cercopithecus mitis kandti) in Mgahinga Gorilla National Park, Uganda was studied from January 2003 to February 2004 to establish habitat(More)
Group size affects many aspects of the ecology and social organization of animals. We investigated group size stability for five primate species in Kibale National Park, Uganda from 1996 to 2011 at three nested spatial scales. Survey data indicated that group sizes did not change for most species, with the exception of red colobus monkeys (Procolobus(More)
A series of articles by W.J. Freeland published in the 1970s proposed that social organization and behavioral processes were heavily influenced by parasitic infections, which led to a number of intriguing hypotheses concerning how natural selection might act on social factors because of the benefits of avoiding parasite infections. For example, Freeland(More)
Substantial research has shown that while some parasite infections can be fatal to hosts, most infections are sub-clinical and non-lethal. Such sub-clinical infections can nonetheless have negative consequences for the long-term fitness of the host such as reducing juvenile growth and the host's ability to compete for food and mates. With such effects,(More)
Physical traits, such as body size, and processes like growth can be used as indices of primate health and can add to our understanding of life history and behavior. Accurately measuring physical traits in the wild can be challenging because capture is difficult, disrupts animals, and may cause injury. To measure physical traits of arboreal primates(More)
Dennis Twinomugisha Institute of Environment and Natural Resources, Makerere University, Kampala, Uganda Colin A. Chapman Department of Zoology, University of Florida, Gainesville, FL 32611; Wildlife Conservation Society, 2300 Southern Boulevard, Bronx, NY 10460 Michael J. Lawes Forest Biodiversity Programme, School of Botany and Zoology, University of(More)
Golden monkey populations decline despite improved protection in Mgahinga Gorilla National Park, Uganda Dennis Twinomugisha and Colin A. Chapman* Institute of Environment and Natural Resources, Makerere University, PO Box 7298, Kampala, Uganda and Anthropology Department and McGill School of Environment, 855 Sherbrooke St West, McGill University, Montreal,(More)
8 Human modification of ecosystems is threatening biodiversity on a global scale. 9 For example, it is estimated that, during the 1990s, 16 million ha of forest were lost 10 globally each and every year, of which 15.2 million ha were tropical forest (FAO 11 2005, 2010). Furthermore, even when the physical structure of the forest remains 12 intact,(More)
Globally, habitat degradation is accelerating, especially in the tropics. Changes to interface habitats can increase environmental overlap among nonhuman primates, people, and domestic animals and change stress levels in wildlife, leading to changes in their risk of parasite infections. However, the direction and consequences of these changes are unclear,(More)
Tony L. Goldberg · Samuel Angedakin · Gilbert M. Isabirye Basuta · Michelle Brown · Thomas M. Butynski · Colin A. Chapman · Lauren Chapman · Sholly Gunter · Innocent Kato · Jean-Michel Krief · Sabrina Krief · Joanna E. Lambert · Kevin E. Langergraber · John C. Mitani · Martin N. Muller · Sherry V. Nelson · Patrick Omeja · Emily Otali · Kevin B. Potts ·(More)