Rectal swabs, throat swabs, fecal samples, tissues, and sera were collected from 334 adult and infant Kenya baboons (Papio cynocephalus) in captivity at this institution over a 5-year period. A total of 4,893 specimens were collected, resulting in the isolation of 582 viral isolates (11.9%). The month of November yielded the lowest isolation rate, while the month of January produced the highest rate. The most commonly isolated viruses in adults and infants were SV6 and SV23, followed by N125, SV15, and SV17 in that order in adults, and SA7, N125, SV15, V340, and SV17 in that order in infants. Nine serotypes, namely enteroviruses SV19, SV42, SA5, A13, and N203, as well as adenoviruses SV15, SV20, SV31, and SV37, were isolated only from adults. Two adenovirus serotypes, SA7 and V340, were recovered predominantly from infants.
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Elife
December 2024
Department of Anthropology and Archaeology, University of Calgary, Calgary, Canada.
Studying the fecal microbiota of wild baboons helps provide new insight into the factors that influence biological aging.
View Article and Find Full Text PDFAnim Behav
August 2024
Department of Biology, Duke University, Durham, NC, U.S.A.
The Vandenbergh effect, or male-mediated maturation, occurs when females reach sexual maturation upon exposure to a novel male. Male-mediated maturation is found across mammals, including in geladas, , where it may be an adaptive counterstrategy to infanticide that follows the immigration of a new male; maturing after male immigration maximizes a female's chances of weaning her first offspring before the next infanticidal male immigrates (the 'optimal timing hypothesis'). Alternatively, the nonadaptive 'Bruce effect by-product hypothesis' posits that male-mediated maturation in geladas (and possibly other mammals) is triggered by the same physiological changes that, in pregnant females, produce spontaneous abortion (the Bruce effect).
View Article and Find Full Text PDFPLoS One
July 2024
Department of Anthropology, University of Toronto, Toronto, Ontario, Canada.
J Anim Ecol
July 2024
Department of Biological Sciences, University of Illinois at Chicago, Chicago, Illinois, USA.
Biological market theory can be used to explain intraspecific cooperation, interspecific mutualism, and sexual selection through models of game theory. These models describe the interactions between organisms as two classes of traders (buyers/sellers) exchanging commodities in the form of goods (e.g.
View Article and Find Full Text PDFAm J Biol Anthropol
April 2023
Department of Evolutionary Anthropology, Duke University, Durham, North Carolina, USA.
Objectives: Pregnancy failure represents a major fitness cost for any mammal, particularly those with slow life histories such as primates. Here, we quantified the risk of fetal loss in wild hybrid baboons, including genetic, ecological, and demographic sources of variance. We were particularly interested in testing the hypothesis that hybridization increases fetal loss rates.
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