Summary Under the dispersal/foraging efficiency model, colobines are predicted to be ‘indifferent mothers’, neither facilitating philopatry for their daughters nor evicting them from natal home range because food competition is thought slight. We observed six groups of Colobus vellerosus at Boabeng-Fiema Monkey Sanctuary in Ghana (2000‐2007) and recorded changes female composition caused by (N = 11) inferred 12) emigrations immigrations 3). also 14 immigration attempts. Most emigrating...

[Dispersal is male-biased in ursine colobus monkeys ( Colobus vellerosus ), although female dispersal also occurs (Teichroeb et al., 2009). Here we describe the process of male and its connection with between-group encounters (BGEs, N = 444) incursions (when males left their group approached within 50 m another group; 128) at Boabeng-Fiema Monkey Sanctuary central Ghana. Through BGEs incursions, particularly those non-aggressive interactions between individuals different groups 17; 4), could...

Journal Article Primates adjust movement strategies due to changing food availability Get access Rafael Reyna-Hurtado, Reyna-Hurtado El Colegio de la Frontera Sur, ECOSUR, Avenida Rancho s/n, Lerma, Campeche, México Address correspondence R. Reyna-Hurtado. E-mail: rreyna@ecosur.mx. https://orcid.org/0000-0003-4382-642X Search for other works by this author on: Oxford Academic Google Scholar Julie A Teichroeb, Teichroeb Department of Anthropology, University Toronto Scarborough, Toronto,...

Abstract For group‐living mammals, the ecological‐constraints model predicts that within‐group feeding competition will increase as group size increases, necessitating more daily travel to find food and thereby constraining size. It provides a useful tool for detecting scramble any time it is difficult determine whether or not limiting. We tested on highly folivorous ursine colobus monkeys ( Colobus vellerosus ) at Boabeng‐Fiema Monkey Sanctuary in Ghana. Three differently sized groups were...

Summary During a 13-month study period on four groups of Colobus vellerosus at the Boabeng-Fiema Monkey Sanctuary in Ghana, we recorded all instances male aggression to infants and mothers with using focal-animal ad libitum sampling. Resident males did not attack infants, whereas new immigrant who became high-ranking those that immigrated as part an all-male band did. this period, three cases confirmed infanticide, one case likely suspected infanticides were attributed males. Not alpha...

ABSTRACT Formal narrative descriptions of primates have long been used by primatologists to describe novel events that are not captured other data collection methods. However, there has a shift away from accounts toward more quantitative methods both within primatology and broadly in the natural sciences. Our objective was investigate shifting use anecdotal evidence primatology. We systematically reviewed published four major journals since year 2000. found 163 out 3,960 total articles...

Abstract Parasite richness and prevalence in wild animals can be used as indicators of population ecosystem health. In this study, the gastrointestinal parasites ursine colobus monkeys ( Colobus vellerosus ) at Boabeng‐Fiema Monkey Sanctuary (BFMS), Ghana, were investigated. BFMS is a sacred grove where humans have long lived relatively peaceful proximity. Fecal samples n = 109) collected opportunistically from >27 adult subadult males six bisexual groups one all‐male band July 2004 to...

The threat of infanticide by males is suggested to determine upper group size limits for some folivores because large female aggregations attract immigrating males. When groups get enough become multimale, risk should decline because, all other things being equal, more deter outside takeovers and the counterstrategies mothers sires lower consequences inside takeovers. To if this scenario can be generalized folivorous primates, we began examining influence male on 4 increasing levels in...

ABSTRACT Primatological research by anthropologists and evolutionary biologists based in Canada has expanded greatly since its inception ca. 60 years ago. The foci of the founding primatologists were on study social behaviors to understand human behavior. While Canadian have remained interested how our nonhuman primate relatives can inform understanding own species, today currently active generations researchers are running labs groups focused a broad range questions species using an scope...

The foraging activity of many organisms reveal strategic movement patterns, showing efficient use spatially distributed resources. underlying mechanisms behind these such as the spatial memory, are topics considerable debate. To augment existing evidence memory in primates, we generated patterns from simulated primate agents with simple sensory and behavioral capabilities. We developed representing various hypotheses use, compared groups to those an observed group red colobus monkeys...

Male takeovers affect male tenure, female mate choice and ultimately, individual reproductive success in group-living primates. In social systems with philopatry high skew, largely determine choice, whereas species dispersal, females have the option of deserting a new male. We focused on facultative dispersal to investigate which factors promote desertion males after takeover, using 15 cases (12 for we complete data takeover process outcome). These took place nine groups Colobus vellerosus...

Abstract Objectives Group living can be advantageous, but for motile organisms, collective movements become necessary. We are just beginning to understand the many ways that animal groups make movement decisions and maintain cohesion. examined start attempts success in leading group vervet monkeys ( Chlorocebus pygerythrus ) characterized by matrilineal territoriality. Materials methods recorded 179 a single of vervets at Lake Nabugabo, Uganda individual three situations (departing from...

Several mammalian species exhibit complex, nested social organizations, termed multi-level or modular societies. Multi-level societies comprise stable core units that fission and fuse with one another in a hierarchical manner, forming groups vary size over time. Among nonhuman primates, these systems have been confirmed several African papionin Asian colobine species. We use data from August 2017 to July 2018 on individually-recognized Rwenzori Angolan colobus living near Lake Nabugabo,...

Females that do not experience strong contest competition for food are presumed to form ‘egalitarian’ relationships (i.e., lacking strong, linear dominance hierarchies). However, recent studies of Gorilla beringei (mountain gorilla) have documented relatively female hierarchies despite them having a highly folivorous diet generates low levels within-group (Robbins et al., 2005, 2007). To investigate if this pattern holds true other species may competition, we examined the linearity and...

Male Colobus vellerosus compete intensely for access to females, which sometimes leads mortal wounding. Yet, males often form cooperative relationships overtake prime-aged and immigrate into bisexual groups. We investigated the factors that predicted presence of coalitions affiliative among in this species. Interactions 292 dyads from six groups were examined 2004 2010 at Boabeng-Fiema, Ghana. Affiliation rates higher aggression lower when one or both dyad subadult, compared adult male...

Crop damage by wildlife is a very prevalent form of human-wildlife conflict adjacent to protected areas, and great economic losses from crop raiding impede efforts protect wildlife. Management plans are needed decrease wildlife, yet conservation biologists typically lack the basic information for informed strategies. Red-tailed monkeys ( Cercopithecus ascanius) raid variety crops forests in East Africa; however, role group structure on has not been explored. Here, patterns solitary males...

Abstract Animal foraging routes are analogous to the computationally demanding “traveling salesman problem” ( TSP ), where individuals must find shortest path among several locations before returning start. Humans approximate solutions s using simple heuristics or “rules of thumb,” but our knowledge how other animals solve multidestination routing problems is incomplete. Most nonhuman primate species have shown limited ability route plan. However, captive vervets were a for six sites. These...