Goro Hanya
Datos Biográficos
| ID | 4146311 |
|---|---|
| NOMBRE | Goro Hanya |
| NOMBRES | Goro |
| APELLIDO | Hanya |
| FIRMA | HANYA G |
| AFILIACIONES | Kyoto University |
| ORCID | 0000-0002-8612-659X |
| VERIFICADO | Sí |
| TOTAL DE OBRAS | 50 |
| TOTAL DE CITAS | 48 |
| TOTAL COMO AUTOR | 50 |
| TOTAL COMO EDITOR | 0 |
| PRIMER AÑO DE PUBLICACIÓN | 1999 |
| AÑO MÁS RECIENTE DE PUBLICACIÓN | 2026 |
| ÍNDICE H | 3 |
Of hot springs and holobionts
Analysis of individual identification and age-class classification of wild female macaque vocalizations without pitch- and formant-based acoustic parameter measurements
Density of Japanese macaques in the western lowland forest of Yakushima and its 50-year temporal changes
Report on the questionnaire of the safety management for field research in the Primate Society of Japan
Ecological and Social Factors Shaping Primate Gut Microbiome
Social dimensions of Japanese macaque crop damage problem in Yakushima
In vitro digestion and fermentation of Japanese macaque ( Macaca fuscata ) food
Chewing is critical for herbivores to obtain nutrients. Measuring digesta particle size as the outcome of chewing can improve our understanding of the relationship between food and digestion. Previous studies of feeds of domestic animals have shown that smaller digesta particle size leads to more efficient digestion. Increased digesta particle size—either due to animal factors (e.g., a senile dentition) or to feed factors (e.g., fracture resistan…
Mineral acquisition of Japanese macaques
Minerals provide micronutrients that function in various ways in the body, and they are necessary for the survival of animals. In this study, we first compared the mineral content of foods of wild Japanese macaques in lowland Yakushima with that of monkey chow used for many years to feed captive macaques and specifically formulated to obtain good health in captive macaques (National Research Council [NRC] recommendations). Second, we clarified th…
Diet‐related factors strongly shaped the gut microbiota of Japanese macaques
Although knowledge of the functions of the gut microbiome has increased greatly over the past few decades, our understanding of the mechanisms governing its ecology and evolution remains obscure. While host genetic distance is a strong predictor of the gut microbiome in large‐scale studies and captive settings, its influence has not always been evident at finer taxonomic scales, especially when considering among the recently diverged animals in n…
Yakushima Macaque Research Group in 2020
Effects of diet and age–sex class on the fecal particle size of wild Japanese macaques ( Macaca fuscata yakui )
Fecal particle size provides important information on the feeding and digestion of herbivores. Understanding the effects of the potential proximate determinants on fecal particle size helps us interpret this widely used measurement. In folivores, previous studies found that diet composition, dietary toughness, and age–sex‐related factors, such as body size and tooth wear, influenced fecal particle size. However, the role of these factors remains …
Stomach and colonic microbiome of wild Japanese macaques
Within the gastrointestinal tract, the physiochemical microenvironments are highly diversified among the different stages of food digestion. Accordingly, gut microbiome composition and function vary at different gut sites. In this study, we examine and compare the compositional and functional potential between the stomach and colonic microbiome of wild Japanese macaques ( Macaca fuscata yakui ) living in the evergreen forest of Yakushima Island. …
Interspecific Encounters Among Diurnal Primates in Danum Valley, Borneo
Spatial position-associated mating strategies employed by male Japanese macaques (Macaca fuscata yakui) in Yakushima
Seasonal variation in energy balance of wild Japanese macaques (Macaca fucata yakui) in a warm-temperate forest
Island-wide Distribution of Japanese Macaques in Yakushima Revealed by Census Targeting Feces on Roads in 2017-2018
We studied the island-wide distribution of wild Japanese macaques in Yakushima (Macaca fuscata yakui) in May 2017 and 2018. We walked 165.4 km along roads and recorded the location of 842 macaque feces. We divided the roads into segments 50 m in length (N=3308) and analyzed the effect of the areas of farms and villages or conifer plantations around the segments and also the presence of hunting for pest control on the presence or absence of feces.…
Habitat use by a primate community in a lowland dipterocarp forest in Danum Valley, Borneo
Knowledge of niche partitioning with respect to habitat is indispensable to understand the mechanism of coexistence of multiple species. Among primates, however, data are still deficient because repeated survey for a sufficiently long time, covering seasonal changes over a large area, is the only way to clarify habitat segregation within a seasonally fluctuating environment. Southeast Asia is particularly interesting because of the supra‐annual, …
Ranging patterns of Japanese macaques in the coniferous forest of Yakushima
Ranging is one of the most important behavioral adaptations for coping with seasonally fluctuating food and thermal conditions. We studied the ranging patterns, in particular home range shift and travel rate of Japanese macaques ( Macaca fuscata ) in the coniferous forest of Yakushima by tracking a group for 17 months. We also supplemented our data with records collected every August over a 5‐year annual census. The macaque group used the eastern…
Gut microbiota composition of Japanese macaques associates with extent of human encroachment
In recent decades, human–wildlife interaction and associated anthropogenic food provisioning has been increasing and becoming more severe due to fast population growth and urban development. Noting the role of the gut microbiome in host physiology like nutrition and health, it is thus essential to understand how human–wildlife interactions and availability of anthropogenic food in habitats can affect an animal's gut microbiome. This study, theref…
Improving the standards for gut microbiome analysis of fecal samples
Comparison of energy balance between two different-sized groups of Japanese macaques (Macaca fuscata yakui)
Estimating activity of Japanese macaques ( Macaca fuscata ) using accelerometers
Accelerometers have been used to study both terrestrial and aquatic wildlife, mainly for mammal and bird species. In terrestrial mammals, there is a bias toward ungulates and carnivores, with fewer studies on nonhuman primates. In this study, we tested the use of accelerometers for studying the activity of Japanese macaques (Macaca fuscata). We modeled the activity of a male and a female subject by matching continuous focal observations from vide…
Thyroid hormone fluctuations indicate a thermoregulatory function in both a tropical ( Alouatta palliata ) and seasonally cold‐habitat ( Macaca fuscata ) primate
Thyroid hormones boost animals’ basal metabolic rate and represent an important thermoregulatory pathway for mammals that face cold temperatures. Whereas the cold thermal pressures experienced by primates in seasonal habitats at high latitudes and elevations are often apparent, tropical habitats also display distinct wet and dry seasons with modest changes in thermal environment. We assessed seasonal and temperature‐related changes in thyroid hor…
Seasonally Consistent Small Home Range and Long Ranging Distance in Presbytis rubicunda in Danum Valley, Borneo
Comparison of feeding behavior between two different‐sized groups of Japanese macaques ( Macaca fuscata yakui )
Group-living animals face intragroup scramble and intergroup contest competitions. Many studies have shown that larger groups bear the costs of intragroup scramble competition, which negatively affects the reproductive success of females. Unlike most primate species, Japanese macaques in the Yakushima coastal forest show increased reproductive success with group size. However, it remains unclear how group size affects the behavior of macaques. Th…
Diet of a Japanese Macaque Troop in the Coniferous Forest of Yakushima
Characteristics of Night Sleeping Trees of Proboscis Monkeys (Nasalis larvatus) in Sabah, Malaysia
Fallback Foods of Red Leaf Monkeys (Presbytis rubicunda) in Danum Valley, Borneo
Seasonally Consistent Small Home Range and Long Ranging Distance in Presbytis rubicunda in Danum Valley, Borneo
Different Roles of Seeds and Young Leaves in the Diet of Red Leaf Monkeys (Presbytis rubicunda)
Digesta Passage Time, Digestibility, and Total Gut Fill in Captive Japanese Macaques (Macaca fuscata)
Effects of Food Type and Number of Feeding Sites in a Tree on Aggression During Feeding in Wild Macaca fuscata
Expeditionary Ranging by a Japanese Macaque Troop in Hieizan
A case of expeditionary ranging, ranging extensively out of the original home range, was observed in a Japanese macaque troop in Hieizan. Their original home range covered 499ha, and during the one-month expedition, they ranged as far as 12km from it. This troop did not suffer any demographic or environmental changes preceding the expedition. The distribution pattern of crops, distributed in thin, long patches along the edges of forest, and lack …
Vertical distribution of wild Yakushima macaques (Macaca fuscata yakui) in the western area of Yakushima Island, Japan
Expeditionary Ranging by a Japanese Macaque Troop in Hieizan
A case of expeditionary ranging, ranging extensively out of the original home range, was observed in a Japanese macaque troop in Hieizan. Their original home range covered 499ha, and during the one-month expedition, they ranged as far as 12km from it. This troop did not suffer any demographic or environmental changes preceding the expedition. The distribution pattern of crops, distributed in thin, long patches along the edges of forest, and lack …
Altitudinal and seasonal variations in the diet of Japanese macaques in Yakushima
Age differences in food intake and dietary selection of wild male Japanese macaques
New method to census primate groups
We devised a new method to estimate the density of primate groups in habitats that preclude the use of a line‐transect census because the ground is too steep. We combined point census and group follows. From the number of groups counted at a fixed point for an hour, n , group density D was calculated: $D = {{\lambda n} \over \pi}$ . λ, the detectability constant, was a constant when distance‐dependent detectability g ( y ) was regressed on a half…
Seasonal variations in the activity budget of Japanese macaques in the coniferous forest of Yakushima
Seasonal variations in the activity budget of Japanese macaques in the coniferous forest of Yakushima were studied over the course of 1 year. On an annual basis, they spent 38% of the daytime feeding, 16% traveling, 14% in social interactions, and 32% engaged in resting. The effects of temperature and food‐related factors (i.e., food distribution, feeding speed, and food abundance) on the seasonal variations of activity budget were examined by st…
Diet of a Japanese Macaque Troop in the Coniferous Forest of Yakushima
Comparisons of food availability and group density of Japanese macaques in primary, naturally regenerated, and plantation forests
We compared food availability and group density of Japanese macaques in Yakushima, southern Japan, among primary forest and two habitats that had been disturbed by logging and had different regeneration histories. The study was conducted in an undisturbed national park, forest that was logged 7–18 years ago and later naturally regenerated, and forest that was logged 19–27 years ago and later planted with Japanese cedar ( Cryptomeria japonica ) tr…
Not only annual food abundance but also fallback food quality determines the Japanese macaque density
Behavioral thermoregulation of wild Japanese macaques
We studied the behavioral thermoregulation of Japanese macaques in two troops that live in the coniferous (1,000–1,200 m in elevation) and coastal forests (0–200 m in elevation) of Yakushima. Frequency of sunbathing, huddling, and microhabitat selection during inactivity was compared. The difference in mean annual air temperature between the forests was more than 7°C. In both forests, when the weather was clear, macaques spent more time being ina…
Food conditions, competitive regime, and female social relationships in Japanese macaques
Effects of Food Type and Number of Feeding Sites in a Tree on Aggression During Feeding in Wild Macaca fuscata
Dietary adaptations of temperate primates
Digesta Passage Time, Digestibility, and Total Gut Fill in Captive Japanese Macaques (Macaca fuscata)
Characteristics of Night Sleeping Trees of Proboscis Monkeys (Nasalis larvatus) in Sabah, Malaysia
Fallback Foods of Red Leaf Monkeys (Presbytis rubicunda) in Danum Valley, Borneo
Preface to the special contribution “Out of the tropics
Feeding strategies of primates in temperate and alpine forests
Fruiting and flushing phenology in Asian tropical and temperate forests
Diet, Activity, Habitat Use, and Ranging of Two Neighboring Groups of Food‐Enhanced Long‐Tailed Macaques ( Macaca fascicularis )
We conducted observations of two neighboring groups of food-enhanced long-tailed macaques (Macaca fascicularis) over a period of one year. We examined their diet, behavior, habitat use, and ranging and how within-population variability reflected differential utilization of anthropogenic food resources. The group that consumed more anthropogenic food spent less time feeding on wild fruits and flowers, less time resting, and more time locomoting. T…
Dietary modification by common brown lemurs (Eulemur fulvus) during seasonal drought conditions in western Madagascar
Mycophagy among Japanese macaques in Yakushima
Ecosystem impacts of folivory and frugivory by Japanese macaques in two temperate forests in Yakushima
Comparing animal consumption to plant primary production provides a means of assessing an animal's impact on the ecosystem and an evaluation of resource limitation. Here, we compared annual fruit and leaf consumption by Japanese macaques (Macaca fuscata) relative to the annual production of these foods in the lowlands and highlands of Yakushima Island, Japan. We estimated consumption by macaques by the direct observation of macaque groups for 1 y…
Short‐term separation from groups by male Japanese macaques
To expand our understanding of fission-fusion behavior and determine its variability among primates, studies of both individual-based and group-based fission-fusion are necessary. We conducted a parallel tracking study of male and female Japanese macaques (Macaca fuscata yakui) during the non-mating season to clarify the general features of separate ranging by males of this species, an example of fission-fusion behavior, and to reveal its associa…
Comparison of feeding behavior between two different‐sized groups of Japanese macaques ( Macaca fuscata yakui )
Group-living animals face intragroup scramble and intergroup contest competitions. Many studies have shown that larger groups bear the costs of intragroup scramble competition, which negatively affects the reproductive success of females. Unlike most primate species, Japanese macaques in the Yakushima coastal forest show increased reproductive success with group size. However, it remains unclear how group size affects the behavior of macaques. Th…
Biology (45 obras) · Primate Behavior and Ecology (41 obras) · Ecology (28 obras) · Animal Behavior and Reproduction (26 obras) · Animal ecology (22 obras) · Animal Vocal Communication and Behavior (21 obras) · Geography (18 obras) · Zoology (18 obras) · Habitat (16 obras) · Ecology (15 obras)