Publications

generalized mucormycosis in the golden-bellied mangabey (cercocebus galeritus chrysogaster, lydekker).		1972	4203105
the reaction of a mangabey monkey (cercocebus galeritus agilis milne-edwards) to inoculation with yellow fever virus.		1968	4389547
drinking behaviour in the tana crested mangabey cercocebus galeritus galeritus.		1998	9885337
mutations in ccr5-coding sequences are not associated with siv carrier status in african nonhuman primates.	african monkeys can be naturally infected with siv but do not progress to aids. since mutations in the human ccr5 gene have been shown to influence susceptibility to hiv infection and disease progression, we have now investigated whether mutations in ccr5-coding sequences in african nonhuman primates can explain species-specific differences in susceptibility to lentiviral infection. the animals studied comprise chronically infected monkeys corresponding to four natural hosts of siv (cercopithecu ...	1999	10408730
ecological correlates of abundance in the tana mangabey (cercocebus galeritus).	i investigated the ecological correlates of abundance in the tana mangabey (cercocebus galeritus), one of the world's most endangered primates, with the goal of recommending management strategies. i systematically selected 31 forest fragments throughout the mangabey's 60-km distribution along the lower tana river in southeastern kenya. within the 31 fragments, i measured vegetation structure, food abundance, and human forest product use in 107 belt transects, and conducted 370 mangabey surveys. ...	2004	15258957
examination of increased annual range of a tana mangabey (cercocebus galeritus) group.	a group of tana mangabeys (cercocebus galeritus) has greatly expanded its annual range over three decades: from 17.25 hectares (ha) in 1974 (homewood [1976] ph.d. dissertation, university college london) and 18.75 ha in 1988-1989 (kinnaird [1990a] ph.d. dissertation, university of florida) to 46.75 ha in 2000-2001. utilizing 5-min mapping samples, phenological samples, vegetation data, and statistical and descriptive comparisons with previous data, three hypotheses concerning this range increase ...	2005	15810006
gastrointestinal parasites of critically endangered primates endemic to tana river, kenya: tana river red colobus (procolobus rufomitratus) and crested mangabey (cercocebus galeritus).	we conducted fecal egg counts of gastrointestinal parasites of 2 critically endangered primates endemic to the forest of tana river, kenya. we aimed to use the fecal egg counts as proxies to quantify the prevalence of gastrointestinal parasites between the 2 primates. the tana river red colobus (procolobus rufomitratus) and crested mangabey (cercocebus galeritus) are of similar body size, but their behavioral ecology is very different. we predicted that mangabeys would have a higher prevalence o ...	2006	17152930
shifting forest composition and primate diets: a 13-year comparison of the tana river mangabey and its habitat.	we compared the feeding behavior of a group of tana river mangabeys (cercocebus galeritus), densities of 25 diet species, and fruit availability of nine species in a 16.25 ha tana river forest in southeastern kenya studied in 1988 and in 2000-2001. for both studies, we enumerated all reproductively sized individuals of the 25 diet species and sampled nine of those species monthly for fruit availability. mangabey feeding data were collected monthly from january to december 1988 and august 2000 to ...	2008	17948895
host density and human activities mediate increased parasite prevalence and richness in primates threatened by habitat loss and fragmentation.	1. habitat loss and fragmentation are the principal causes of the loss of biological diversity. in addition, parasitic diseases are an emerging threat to many animals. nevertheless, relatively few studies have tested how habitat loss and fragmentation influence the prevalence and richness of parasites in animals. 2. several studies of nonhuman primates have shown that measures of human activity and forest fragmentation correlate with parasitism in primates. however, these studies have not tested ...	2009	19120603
food choices and habitat use by the tana river yellow baboons (papio cynocephalus): a preliminary report on five years of data.	the tana river primate national reserve, kenya (trpnr) yellow baboons' (papio cynocephalus) long-term habitat usage and food preferences are relatively under-reported. the author presents a preliminary food catalog and analyses of 5 years of data (january 88-october 92; n=55 mo; 875 observation days; 4,893 hourly scans) for the mchelelo troop (x=75 individuals). the author predicted that the trpnr baboons would spend more time on the much larger savanna, show a seasonal preference for fruits/see ...	2009	19199351
links between habitat degradation, and social group size, ranging, fecundity, and parasite prevalence in the tana river mangabey (cercocebus galeritus).	we investigated the effects of anthropogenic habitat degradation on group size, ranging, fecundity, and parasite dynamics in four groups of the tana river mangabey (cercocebus galeritus). two groups occupied a forest disturbed by human activities, while the other two occupied a forest with no human disturbance. we predicted that the groups in the disturbed forest would be smaller, travel longer distances daily, and have larger home ranges due to low food tree abundance. consequently, these group ...	2009	19544575
the primates of the udzungwa mountains: diversity, ecology and conservation.	the udzungwa mountains are one of the most important areas in africa for primate diversity and conservation, with two endemic monkeys (udzungwa red colobus procolobus gordonorum and sanje mangabey cercocebus [galeritus] sanjei), and the near-endemic kipunji monkey rungwecebus kipunji, a new genus and species discovered in 2004 and found in udzungwa and southern highlands. with six species of galagos, or bushbabies, the area is also of exceptional importance for nocturnal primates. the form of mo ...	2009	19663171
brief communication: puncture and crushing resistance scores of tana river mangabey (cercocebus galeritus) diet items.	cercocebus mangabeys are characterized by dental traits that have been interpreted as adaptations to eat hard diet items. although there are data that mangabeys include a large proportion of fruit and especially seeds in their diets, no hardness measurements have been done on mangabeys' food items. this study measured puncture and crushing resistance of food items in the diet of the tana river mangabey (c. galeritus). feeding data were collected by the use of scan samples from one mangabey group ...	2009	19672852
tana river red colobus and crested mangabey: results of recent censuses.	censuses of the tana river red colobus (colobus badius rufomitratus) and crested mangabey (cercocebus galeritus galeritus), primate species endemic to riverine forests of the lower tana river in eastern kenya, showed significant population declines for both species between the mid-1970s and 1980s. red colobus declined in terms of group size and number of groups per forest; the mangabey population declined only in numbers of groups per forest. there was no significant change in mean group age/sex ...	1992	31948170
pregnancy, gestation and parturition in free-ranging tana river crested mangabeys (cercocebus galeritus galeritus).	mean gestation for seven free-ranging tana river crested mangabeys (cercocebus galeritus galeritus) is 180 days (se = 4.49). all females showed postconception sexual swellings after the first 2 months of pregnancy, and two of the seven copulated with males at this time. one birth was observed; observations of a second infant began less than 1 hr after birth. details of parturition are given, with responses of group members to the events. adult and juvenile females showed more sustained interest ...	1990	31952420