Publications

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shape of, and body direction in, huddles of japanese macaques (macaca fuscata) in arashiyama, japan.we studied huddles of japanese macaques (macaca fuscata) in the arashiyama e troop at the "arashiyama monkey park, iwatayama" of kyoto, central japan. the macaques made physical contact with other individuals and formed huddles when the air was cold. the 99-101 adult females and 26-36 adult males in the study troop formed 345 huddles during 42 scan samples in the winter of 2001 and 376 huddles during 52 scan samples in the winter of 2002. the average size of huddles was 2.3 (range 2-7) individua ...201121442467
age-related changes of elements in the tendons of the peroneus longus muscles in thai, japanese, and monkeys.to elucidate compositional changes of the tendon of the peroneus longus muscle with aging, the authors investigated age-related changes of elements in the insertion of tendons of the peroneus longus muscle (peroneus longus tendons) in thai, japanese, and monkeys and the relationships among element contents by direct chemical analysis. after ordinary dissections at chiang mai university and nara medical university were finished, the peroneus longus tendons were resected from the subjects. the per ...201019618135
age-related changes of elements in the tendons of the peroneus longus muscles in thai, japanese, and monkeys.to elucidate compositional changes of the tendon of the peroneus longus muscle with aging, the authors investigated age-related changes of elements in the insertion of tendons of the peroneus longus muscle (peroneus longus tendons) in thai, japanese, and monkeys and the relationships among element contents by direct chemical analysis. after ordinary dissections at chiang mai university and nara medical university were finished, the peroneus longus tendons were resected from the subjects. the per ...201019618135
renal clearance of perfluorooctane sulfonate and perfluorooctanoate in humans and their species-specific excretion.perfluorooctane sulfonate (pfos) and perfluorooctanoate (pfoa) are detected in the environment, as well as more specifically in wildlife and humans. however, the toxicokinetic aspects of perfluorochemicals in humans are unclear. in this study, we measured concentrations of pfoa and pfos in subjects who had lived in kyoto city for more than 10 years. the serum concentrations of pfoa and pfos were higher in females who menstruated than those who did not menstruation (p<0.01), but in males this did ...200516194675
effect of female-biased sex ratios on female homosexual behavior in japanese macaques: evidence for the "bisexual preference hypothesis".we aimed to explain the frequent and prevalent female homosexual behavior in the context of female-biased operational sex ratios (osr) and qualified sex ratios (q) in a free-ranging group of japanese macaques (macaca fuscata) living at arashiyama-kyoto, japan. our data included the average availability of sexually mature males during females' putative fertile period (osr), the ratio of sexually mature males to sexually mature females (q), as well as heterosexual and female homosexual solicitatio ...201525946902
experimental evaluation of the zoonotic infection potency of simian retrovirus type 4 using humanized mouse model.during 2001-2002 and 2008-2011, two epidemic outbreaks of infectious hemorrhagic disease have been found in japanese macaques (macaca fuscata) in kyoto university primate research institute, japan. following investigations revealed that the causative agent was simian retrovirus type 4 (srv-4). srv-4 was isolated by using human cell lines, which indicates that human cells are potently susceptible to srv-4 infection. these raise a possibility of zoonotic infection of pathogenic srv-4 from japanese ...201526364986
social relationships of nulliparous young adult females beyond the ordinary age of the first birth in a free-ranging troop of japanese macaques (macaca fuscata).we describe the social relationships of young adult female japanese macaques (macaca fuscata) in a free-ranging troop in arashiyama, kyoto, japan, who remained nulliparous beyond the ordinary age of first birth because of contraceptive administration. we observed 12 young nulliparous adult females (6-9 years old) for 270 h and 10 min from 2 february to 5 october 2010. the majority maintained close relationships with their mothers through proximity and grooming, whereas a few had very infrequent ...201322926656
grooming and consort partner selection in a troop of japanese monkeys (macaca fuscata).the arashiyama west troop of macaca fuscata consists of 150 monkeys transported from kyoto, japan, in february 1972 to their present location near laredo, texas. at this site the animals range over 108 acres and during the study period were only minimally provisioned and disturbed. in the report of a 3-year study of consort partner selection it was suggested that yearlong social bonds within the troop appeared to be distinct from consort bonds formed during mating season. like sade, we consider ...1979115445
grooming and consort partner selection in a troop of japanese monkeys (macaca fuscata).the arashiyama west troop of macaca fuscata consists of 150 monkeys transported from kyoto, japan, in february 1972 to their present location near laredo, texas. at this site the animals range over 108 acres and during the study period were only minimally provisioned and disturbed. in the report of a 3-year study of consort partner selection it was suggested that yearlong social bonds within the troop appeared to be distinct from consort bonds formed during mating season. like sade, we consider ...1979115445
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