Publications

rapid emergence of independent "chromosomal lineages" in silvered-leaf monkey triggered by y/autosome translocation.	sex/autosome translocations are rare events. the only known example in catarrhines is in the silvered-leaf monkey. here the y chromosome was reciprocally translocated with chromosome 1. the rearrangement produced an x1x2y1y2 sex chromosome system. at least three chromosomal variants of the intact chromosome 1 are known to exist. we characterized in high resolution the translocation products (y1 and y2) and the polymorphic forms of the intact chromosome 1 with a panel of more than 150 human bac c ...	2018	29459623
proximity and grooming patterns reveal opposite-sex bonding in rwenzori angolan colobus monkeys (colobus angolensis ruwenzorii).	close proximity and social grooming are important bonding mechanisms in primates. these behaviors show the social structure of a species and many studies have found positive correlations between the degree of kinship and grooming and proximity. we used 1 year of data collected via instantaneous scan sampling on a large "supertroop" of colobus angolensis ruwenzorii at lake nabugabo, uganda, to examine partner preferences for grooming and nearest neighbors in each age-sex class. little is known ab ...	2018	29270880
the body center of mass in primates: is it more caudal than in other quadrupedal mammals?	whole body center of mass (bcom) position values are lacking for a comparative sample of primates. therefore, it still remains unknown whether the bcom in primates is more posteriorly located than in other mammals. the aim of the present report is to provide data for a large sample of primate species and to compare the position of the bcom in primates to non-primate mammals.	2019	30839107
a preliminary survey of medium and large-sized mammals from lebu natural protected forest, southwest showa, ethiopia.	this study was conducted to determine the species composition and diversity of medium and large-sized mammals from lebu natural protected forest, ethiopia. surveys were conducted to record mammals through direct observation and indirect evidence from three habitat types, namely: natural forest, bushland, and riverine forest. a total of 15 mammalian species were recorded. the species recorded were papio anubis, chlorocebus aethiops, tragelaphus scriptus, canis aureus, crocuta crocuta, panthera pa ...	2019	31832163
insights into the molecular systematics of trichuris infecting captive primates based on mitochondrial dna analysis.	nematodes belonging to the trichuris genus are prevalent soil-transmitted helminths with a worldwide distribution in mammals, while humans are mainly affected in areas with insufficient sanitation such as in africa, asia and south america. traditionally, whipworms infecting primates are referred to trichuris trichiura, but recent molecular and morphological evidence suggests that more than one species may be able to infect humans and non-human primates. here, we analyzed the genetic diversity an ...	2019	31395201
kaposi sarcoma in mantled guereza.	we identified a novel kaposi's sarcoma herpesvirus-related rhadinovirus (colobine gammaherpesvirus 1) in a mantled guereza (colobus guereza kikuyensis). the animal had multiple oral tumors characterized by proliferation of latent nuclear antigen 1-positive spindle cells and was not co-infected with immunosuppressive simian viruses, suggesting that it had kaposi sarcoma caused by this novel rhadinovirus.	2019	31310216
yersinia infection in two captive guereza colobus monkeys (colobus guereza).	two guereza colobus monkeys (colobus guereza) reared in a zoological garden in japan suddenly died of multifocal fibrinonecrotic gastroenteritis and septicemia associated with infection by yersinia spp. it was necessary to microbiologically differentiate yersinia frederiksenii and y. enterocolitica. we described the pathological findings and discuss the causal agent to emphasize the need to revert to using a combination of multiple examinations for diagnosis.	2019	31308292
novel virus related to kaposi's sarcoma-associated herpesvirus from colobus monkey.	we determined the complete genome sequence of a virus isolated from a mantled guereza that died of primary effusion lymphoma. the virus is closely related to kaposi's sarcoma-associated herpesvirus (kshv) but lacks some genes implicated in kshv pathogenesis. this finding may help determine how kshv causes primary effusion lymphoma in humans.	2019	31310220
comparative morphology of the lingual papillae and their connective tissue cores in the tongue of the abyssinian black-and-white colobus (colobus guereza).	we observed the morphology of the lingual papillae (filiform, fungiform, foliate, and vallate) and their underlying connective tissue cores (ctcs) in abyssinian black-and-white colobus monkeys using light and scanning electron microscopy. the tongues of both juvenile and senescent individuals were relatively short in the rostro-caudal direction, with a rounded apex. lingual tori were absent. numerous filiform papillae were distributed over the entire tongue, except at the lingual root. a pair of ...	2019	30762218
is colobus guereza gallarum a valid endemic ethiopian taxon?	black-and-white colobus (colobus guereza rüppell, 1835) are arboreal old world monkeys inhabiting large parts of the deciduous and evergreen forests of sub-saharan africa. two of the eight subspecies of colobus guereza are endemic to ethiopia: c. g. gallarum and c. g. guereza. however, the validity of the ethiopian taxa is debated and observed morphological differences were attributed to clinal variation within c. g. guereza. to date, no molecular phylogeny of the ethiopian guerezas is available ...	2019	32110714
the diet and feeding behavior of the black-and-white colobus (colobus guereza) in the kalinzu forest, uganda.	one of the goals for primate feeding ecology is to understand the factors that affect inter- and intra-specific variations. therefore, a detailed description of basic feeding ecology in as many populations as possible is necessary and warrants further understanding. the black-and-white colobus (colobus guereza) or guereza is widely distributed in africa and is one of the well-studied colobines in terms of their feeding; they demonstrate considerable variation in their diets in response to local ...	2020	32026152
selecting between iron-rich and clay-rich soils: a geophagy field experiment with black-and-white colobus monkeys in the budongo forest reserve, uganda.	geophagy, the intentional consumption of soil, has been observed in humans and numerous other animal species. geophagy has been posited to be adaptive, i.e., consumed soil protects against gastrointestinal distress and/or supplements micronutrients. we conducted a field experiment in the budongo forest, uganda, to investigate geophagic behaviors, including soil preference, the quantity of soil eaten, and competition for access to preferred soils. we placed pairs of artificial tree stumps at two ...	2020	32676864
skeletal morphology of the lesula (cercopithecus lomamiensis) and the evolution of guenon locomotor behavior.	the guenons (tribe cercopithecini) are a diverse and primarily arboreal radiation of old world monkeys from africa. however, preliminary behavioral observations of the lesula (cercopithecus lomamiensis), a little-known guenon species described in 2012, report it spending substantial amounts of time on the ground. new specimens allow us to present the first description of lesula postcranial morphology and apply a comparative functional morphology approach to supplement our knowledge of its locomo ...	2020	32124976
molecular prevalence and subtypes of blastocystis sp. in primates in northern china.	blastocystis sp. is a common enteric protist that colonizes humans and a wide range of animals. although some studies have reported incidences of blastocystis sp. in humans and animals in china, there are limited data available concerning the prevalence among people and non-human primates. the aims of the present study were to determine the prevalence, subtype distribution and genetic characteristics of blastocystis sp. in primates, and to investigate the potential for zoonotic transmission betw ...	2020	32445593
abundance, diversity, and distribution of primates at welel mountain, kellem wollega zone, oromia region, ethiopia.	primates are the mammals of the order primate that is characterized by advanced development of binocular vision and enlargement of the cerebral hemispheres. the aim of this study was to investigate the abundance, diversity, and distribution of primates on welel mountain. from august 2017 to february 2018, we collected data from different parts of welel mountain during wet and dry seasons of the year and analyzed them using spss version 20. we identified four primate species: chlorocebus aethiops ...	2020	32454802