A5017686500- Primate Behavior and Ecology
- Wildlife Ecology and Conservation
- Human-Animal Interaction Studies
- Rangeland Management and Livestock Ecology
- Animal Vocal Communication and Behavior
- Marine animal studies overview
- Conservation, Biodiversity, and Resource Management
- Uterine Myomas and Treatments
- Bat Biology and Ecology Studies
- Animal Behavior and Welfare Studies
- Parvovirus B19 Infection Studies
- Cancer Immunotherapy and Biomarkers
- Animal Behavior and Reproduction
- Cleft Lip and Palate Research
- Indigenous Studies and Ecology
- Effects of Environmental Stressors on Livestock
- Brain Metastases and Treatment
- Traumatic Ocular and Foreign Body Injuries
- Parasite Biology and Host Interactions
- Zoonotic diseases and public health
- Autopsy Techniques and Outcomes
- Ovarian cancer diagnosis and treatment
- Nasal Surgery and Airway Studies
- Endometriosis Research and Treatment
- Blood groups and transfusion
Hiroshima University
2024
Kyoto University
2012-2024
Sabah Wildlife Department
2024
Universiti of Malaysia Sabah
2024
Institute of Primate Research
2015-2021
Japan Wildlife Research Center
2011-2020
Tokyo Institute of Technology
2010
Kishiwada City Hospital
1996
Sundaland, a tropical hotspot of biodiversity comprising Borneo and Sumatra among other islands, the Malay Peninsula, shallow sea, has been subject to dramatic environmental processes. Thus, it presents an ideal opportunity investigate role mechanisms in shaping species distribution diversity. We investigated population structure underlying insular endemic, Bornean orangutan ( Pongo pygmaeus ). Phylogenetic reconstructions based on mtDNA sequences from 211 wild orangutans covering entire...
Abstract The orangutan is the world's largest arboreal mammal and images of red ape moving through tropical forest canopy symbolise its typical behaviour. Records terrestrial behaviour are scarce often associated with habitat disturbance. We conducted a large-scale species-level analysis ground-based camera-trapping data to evaluate extent which Bornean orangutans Pongo pygmaeus come down from trees travel terrestrially whether they indeed forced ground primarily by anthropogenic...
We examine the effect of total annual food abundance and seasonal availability on biomass species richness for frugivorous primates three continents (n=16 sites) by data fruit fall. reveal that best‐fit models predicting primate include fall (positive), seasonality (negative) biogeography (Old World>New World mainland>island) these factors explain 56–67% variation. For number species, but not Annual temperature has additional effects when fruits are controlled, there is no such...
We observed the diet and activity of Bornean orangutans (Pongo pygmaeus morio) in primary lowland dipterocarp forests Danum Valley, Sabah, Malaysia, during 2005-2007, including two mast fruitings. collected 1,785 hr focal data on 26 orangutans. identified 1,466 samples their food plants conducted a fallen fruit census to monitor availability study area. Their budget was 47.2% feeding, 34.4% resting, 16.9% traveling. Fruits accounted for largest part (60.9%) feeding time, especially fruiting...
Abstract To propose proper conservation measures and to elucidate coexistence mechanisms of sympatric carnivore species, we assessed temporal activity patterns the species using 37,379 photos collected for more than 3 years at three study sites in Borneo. We categorized nine (one bear, civets, two felids, one skunk, mustelid, linsang) by calculating photo-capturing proportions each time period (day, night, twilight). then evaluated overlaps overlap coefficients. identified six nocturnal...
Although uterine leiomyomas represent one of the most common neoplasms in adult women, their pathogenesis remains poorly understood. A cDNA microarray analysis was performed to search for candidate genes expressed a greater degree leiomyoma compared with matched myometrium. total 15 obtained; neuron-specific protein PEP-19 (Purkinje cell 4; PCP 4) exhibited striking difference expression between and has been reported exclusively central nervous system, present study demonstrated that is also...
Abstract Knowledge of niche partitioning with respect to habitat is indispensable understand the mechanism coexistence multiple species. Among primates, however, data are still deficient because repeated survey for a sufficiently long time, covering seasonal changes over large area, only way clarify segregation within seasonally fluctuating environment. Southeast Asia particularly interesting supra‐annual, highly unpredictable seasonality in fruiting known as mast fruiting. We conducted...
In order to obtain basic data on parasitic infections of Bornean orangutans, Pongo pygmaeus morio (Owen, 1837), in Danum Valley, Sabah, Malaysia, fecal examinations were conducted. Based a total 73 samples from 25 individuals, cysts Entamoeba coli, spp., and Chilomastix mesnili, trophozoites Balantidium eggs Trichuris sp. or unknown strongylid(s), Strongyloides fuelleborni, an oxyurid, plus rhabditoid larva sp., found. Mature immature worms Pongobius hugoti Baruš et al., 2007 foitovae n....
We report a case of juvenile female orangutan (Pongo pygmaeus morio) that remained in durian tree (Durio zibethinus) for about one month, nearby road delimiting Danum Valley Conservation Area (DVCA), East Borneo. The was rescued and brought to Sepilok Orangutan Rehabilitation Centre (SORC). Before rescue after release, we recorded the juvenile's activity collected fecal samples determination glucocorticoids (fGC). compared behavior stress levels between two conditions made comparisons with...
Abstract Objectives We applied stable carbon and nitrogen isotope analyses to wild Bornean orangutans ( Pongo pygmaeus morio ) investigate the feeding ecology of orangutans. Compared with African great ape species, are adapted environments chronic lower nutrition. But usefulness analysis in study orangutan has not been fully explored. Methods The site was a primary lowland dipterocarp forest Danum Valley, Sabah, Malaysia. A total 164 plant 94 fecal samples collected across 18 months were...
[in Japanese]
<title>Abstract</title> Understanding wildlife behavioral responses is crucial for assessing the effects of anthropogenic disturbance. We used camera traps to investigate two ungulate species, bearded pigs (Sus barbatus) and sambar deer (Rusa unicolor), disturbance in three protected areas Sabah, Malaysia, that have varying levels human activity. found activities generally influence activity patterns both ungulates, albeit with variations among sites. The temporal pattern was affected by...