Michael A Huffman
Biographic Data
| ID | 91519 |
|---|---|
| NAME | Michael A Huffman |
| GIVEN NAMES | Michael A |
| FAMILY NAME | Huffman |
| SIGNATURE | HUFFMAN M A |
| AFFILIATIONS | Kyoto University |
| ORCID | 0000-0003-2115-7923 |
| VERIFIED | Yes |
| TOTAL WORKS | 99 |
| TOTAL CITATIONS | 166 |
| AUTHOR COUNT | 98 |
| EDITOR COUNT | 1 |
| FIRST PUBLICATION YEAR | 1984 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 7 |
Valuing Behavioral By‐Products: Evolutionary Significance of Neutrally Drifting and Exaptive Cultures in Primates
After challenging the view that cultural processes mainly produce behavioral adaptations, we urge researchers to adopt a pluralistic view on Darwinian evolution by emphasizing the diversity and importance of evolutionary by‐products and highlighting the heuristic merit of concepts such as behavioral spandrels and exaptations, particularly in the domain of cultural evolution in primates. We then use the concept of the “structure‐function interface…
Human‐Macaque Contact and Zoonotic Infections in Wild Taiwanese Macaques: Evidence From Southern Taiwan
Direct contact between humans and non‐human primates is on the rise, bringing with it the risk of transmission of zoonotic pathogens in habitats with a high level of human–primate interactions. Given the threats to the health and well‐being of both humans and non‐human primates, more attention is needed to this topic. By comparing the infection status of zoonotic pathogens in primate populations with contrasting levels of human interaction, we ca…
Same-Sex Sexual Behavior in Male Toque Macaques (Macaca sinica aurifrons) of Lower Hanthana, Sri Lanka
Reorganization of female dominance relations after group fission of Japanese macaques (Macaca fuscata) in Arashiyama based on Kawamura’s principles
Hagar Interprets Her Own Promise: Exploring A Hopeful Reading of Genesis 16:12
Genesis 16:12 contains three clauses that have been widely interpreted as predicting prolonged conflict between Ishmael’s descendants and their relatives within the Abrahamic family. While there is agreement among contemporary commentators that the wording of these clauses is ambiguous, negative renderings are far more prevalent than positive or neutral renderings in popular English translations, as well as in expositions of the text. This articl…
The impact of tourist visits on mountain gorilla behavior in Uganda
Tourism can play a significant role in the conservation of mountain gorillas (Gorilla beringei beringei) by financing the protection of their habitat, but few systematic studies have focused on the impacts of tourist presence on gorilla behavior. We assessed stress-coping mechanisms (Prosocial behaviors), behavioral indicators of stress (Self-scratching), and Human-directed behavior, in the presence and absence of tourist groups visiting one grou…
Applying collocation and Apriori analyses to chimpanzee diets: Methods for investigating nonrandom food combinations in primate self‐medication
Identifying novel medicinal resources in chimpanzee diets has historically presented challenges, requiring extensive behavioral data collection and health monitoring, accompanied by expensive pharmacological analyses. When putative therapeutic self‐medicative behaviors are observed, these events are often considered isolated occurrences, with little attention paid to other resources ingested in combination. For chimpanzees, medicinal resource com…
Female social dynamics as viewed from grooming networks in the Central Himalayan Langur ( Semnopithecus schistaceus )
Enhanced survival and reproduction are associated with an individual's direct and indirect social connections with members of a group. Yet, the role of these connections is little known in a vast range of primate species. We studied female Central Himalayan Langur (CHL) to investigate the link between four specific attributes (dominance rank, age, genetic relatedness, and the presence of females carrying infants) and a female's direct and indirec…
The Adaptive Role of Bark in the Diet of Budongo Chimpanzees (Pan troglodytes schweinfurthii)
The ingestion of bark has been observed across the animal kingdom and is well documented in free-ranging chimpanzees. Thus far, the best-supported hypothesis for the adaptive function of this behavior is the fallback food hypothesis, which asserts that chimpanzees consume bark and cambium when preferred foods are scarce. However, alternative explanations exist, including the essential nutrient and mineral hypothesis , the self-medication hypothes…
Intense Body Contact Increases Homosexual Pair Bond Stability in Female Japanese Macaques (Macaca fuscata)
The Japanese macaque ( Macaca fuscata ) has become a key species for studying homosexual behavior over recent decades. With the non-conceptive nature, their same-sex consortships illustrate that individual partner preferences can exist beyond direct reproductive benefits or apparent sociosexual strategies. An open question is whether the behavior shared between partners in consortship directly affects their choice to remain with a partner. With t…
Friends in high places: Interspecific grooming between chimpanzees and primate prey species in Budongo Forest
While cases of interspecies grooming have been reported in primates, no comprehensive cross-site review has been published about this behavior in great apes. Only a few recorded observations of interspecies grooming events between chimpanzees and other primate species have been reported in the wild, all of which have thus far been in Uganda. Here, we review all interspecies grooming events recorded for the Sonso community chimpanzees in Budongo F…
Process of Japanese macaque group fission at Arashiyama and the influences of maternal kin relations and social relations between adult males and females on it
Measuring short-term changes in stress-associated salivary analytes in free-ranging Japanese macaques (Macaca fuscata)
The lessons of history and tradition- On becoming a monkey and other insights gained as a primatologist in Japan
Anti-predator strategies of adult male Central Himalayan Langurs (Semnopithecus schistaceus) in response to domestic dogs in a human-dominated landscape
Palestinian Arabs as Co-Heirs of the Abrahamic Promise: Revisiting a Literal, Unconditional Interpretation
A majority of American evangelicals interpret God’s promise to give a certain land to Abraham’s descendants both literally and unconditionally (see Gen 12:2–3 and Gen 15). Because the promise is literal, Abraham’s living descendants are the rightful heirs of the promised land; because it is unconditional, this right belongs to Abraham’s biological descendants regardless of their behavior, beliefs, or other changeable factors. Evangelicals who sup…
Reducing stress and stereotypic behaviors in captive female pygmy slow lorises ( Nycticebus pygmeaus )
Improving captive conditions of pygmy slow lorises (Nekaris and Nijman have recently suggested that the pygmy slow loris should be called the pygmy loris and is distinctive enough to warrant a new genus, Xanthonycticebu ) ( Nycticebus pygmeaus) poses many challenges because detailed aspects of their lives in the wild are incomplete. This hinders efforts to replicate sustainable environments for them. To improve their well‐being in captivity, eigh…
A novel methodological approach for group classification during fission of a semi‐free‐ranging group of Japanese macaques ( Macaca fuscata )
The self‐initiated split of a social group, known as fission, is a challenge faced by many group‐living animals. The study of group fission and the social restructuring process in real time provides insights into the mechanism of this biologically important process. Previous studies on fission in Japanese macaques ( Macaca fuscata ) assigned individuals to newly reorganized groups mainly using behavioral observations and group attendance records …
Twenty-three-year demographic history of the Affenberg Japanese macaques (Macaca fuscata), a translocated semi-free-ranging group in southern Austria
Demographic studies on translocated primate groups provide a unique opportunity to study population dynamics, social strategies, and reproductive parameters of a species adapting to new environments. In 1996, 38 Japanese macaques ( Macaca fuscata ) of the Minoo-H group (Osaka Prefecture, Japan) were translocated to Affenberg Landskron, a four-hectare naturally forested park in southern Austria. By January 2020, the population had increased to 160…
Changes in social behavior and fecal glucocorticoids in a Japanese macaque (Macaca fuscata) carrying her dead infant
What makes a long tail short? Testing Allen's rule in the toque macaques of Sri Lanka
Allen's rule (1877) predicts ecogeographical anatomical variation in appendage proportions as a function of body temperature regulation. This phenomenon has been tested in a variety of animal species. In macaques, relative tail length (RTL) is one of the most frequently measured appendages to test Allen's rule. These studies have relied on museum specimens or the invasive and time‐consuming capturing of free‐ranging individuals. To augment sample…
Asian elephant self-medication as a source of ethnoveterinary knowledge among Karen mahouts in northern Thailand
Antiprotozoal and antihelminthic properties of plants ingested by wild Japanese macaques (Macaca fuscata yakui) in Yakushima Island
Water games by mountain gorillas: Implications for behavioral development and flexibility—a case report
Salivary alpha-amylase enzyme is a non-invasive biomarker of acute stress in Japanese macaques (Macaca fuscata)
Stone-play of Macaca fuscata in Arashiyama B troop: Transmission of a non-adaptive behavior
Factors Affecting Party Size in Chimpanzees of the Mahale Mountains
Leaf-swallowing by chimpanzees: A behavioral adaptation for the control of strongyle nematode infections
Noninvasive Monitoring of the Health of Pan troglodytes schweinfurthii in the Kibale National Park, Uganda
Neanderthal self-medication in context
In a recent study, Hardy et al. (2012) identified compounds from two non-nutritional plants, yarrow and camomile, in a sample of Neanderthal dental calculus from the northern Spanish site of El Sidrón. Both these plants are bitter tasting and have little nutritional value but are well known for their medicinal qualities. Bitter taste can signal poison. We know that the bitter taste perception gene TAS2R38 was present among the Neanderthals of El …
Doctors, chefs or hominin animals? Non-edible plants and Neanderthals
In 2013, Hardyet al.offered a broad behavioural context for the hypothesis that the ingestion of non-nutritional plants (yarrow and camomile) by Neanderthals was for the purpose of self-medication. Chemical traces of these plants had been detected in samples of dental calculus from Neanderthals at the site of El Sidrón, Spain, along with traces of bitumen and wood smoke, as well as starch granules that showed evidence of roasting (Hardyet al.2012…
Factors Influencing the Ranging Behavior of Chacma Baboons (Papio hamadryas ursinus) Living in a Human-Modified Habitat
Self-induced Increase of Gut Motility and the Control of Parasitic Infections in Wild Chimpanzees
Stone-throwing by Japanese macaques: Form and Functional Aspects of a Group-Specific Behavioral Tradition
New Evidence for Leaf Swallowing and Oesophagostomum Infection in Bonobos (Pan paniscus)
Age-related differences in the performance, diffusion, and maintenance of stone handling, a behavioral tradition in Japanese macaques
Peripartum cortisol levels and mother‐infant interactions in Japanese macaques
As evidence accumulates regarding the influence of hormones and stress‐related conditions on maternal behavior, it becomes critical to better understand the relationship between physiological stress and the ability to cope with infants. Eight Japanese macaque females were observed 3 hr per week during the first 12 weeks after parturition; fecal samples were collected twice a week from each mother, starting 4 weeks before parturition and ending 4 …
The Adaptive Significance of Geophagy for Japanese Macaques (Macaca fuscata) at Arashiyama, Japan
Of stones and monkeys: Testing ecological constraints on stone handling, a behavioral tradition in Japanese macaques
Japanese macaques are known to manipulate stones by displaying various seemingly functionless behavioral patterns, including carrying a stone, rubbing two stones together, or gathering several stones into a pile. This form of solitary object play called stone handling (SH) is a behavioral tradition in Japanese macaques, showing striking intertroop differences in frequency and form. Here, we evaluated two ecologically based hypotheses invoked to a…
Hormonal Correlates of Maternal Style in Captive Macaques (Macaca fuscata and M. mulatta)
Physiological activities and the active constituents of potentially medicinal plants used by wild chimpanzees of the Mahale mountains, Tanzania
Principles and levels of laterality in unimanual and bimanual stone handling patterns by Japanese macaques
Parasitic Nematodes in the Chimpanzee Population on Rubondo Island, Tanzania
Development and Validation of an Enzyme Immunoassay for Fecal Dehydroepiandrosterone Sulfate in Japanese Macaques (Macaca fuscata)
Effect of Female-Biased Sex Ratios on Female Homosexual Behavior in Japanese Macaques: Evidence for the “Bisexual Preference Hypothesis”
Gastrointestinal Parasites of Indigenous and Introduced Primate Species of Rubondo Island National Park, Tanzania
The Four Chimpanzee Skulls Collected in the Mahale Mountains, Tanzania
Morphological and osteological data taken from chimpanzee skeletal materials gathered at chimpanzee research sites are accompanied by life history data (e.g. diet, environment of habitat, sexual activity and social relationship). Unfortunately morphological and osteological studies of chimpanzee skeletal remains from long-term field research projects are rare (Yasui and Takahata, 1983, an infant of P. t. schweinfurthii from Mahale mountains Natio…
Intense Body Contact Increases Homosexual Pair Bond Stability in Female Japanese Macaques (Macaca fuscata)
The Japanese macaque ( Macaca fuscata ) has become a key species for studying homosexual behavior over recent decades. With the non-conceptive nature, their same-sex consortships illustrate that individual partner preferences can exist beyond direct reproductive benefits or apparent sociosexual strategies. An open question is whether the behavior shared between partners in consortship directly affects their choice to remain with a partner. With t…
Energetic consequences of seasonal breeding in female Japanese macaques ( Macaca fuscata )
Japanese macaques inhabit a relatively cold environment and females of this species could have developed strategies of energy economy to face the sometimes‐harsh seasonal conditions of temperate climates, as well as reproductive costs, and thus regulate their energy balance. Here, we explore the relationship between nutritional status, body composition, seasonality, and reproductive status using isotope‐labeled water, anthropometric measurements,…
Environmental and Social Factors Associated with the Occurrence of Stone-Handling Behavior in a Captive Troop of Macaca fuscata
Stone-play of Macaca fuscata in Arashiyama B troop: Transmission of a non-adaptive behavior
Stone handling by Japanese macaques (Macaca fuscata): Implications for tool use of stone
Observations on the illness and consumption of a possibly medicinal plantVernonia amygdalina (Del.), by a wild chimpanzee in the Mahale Mountains National Park, Tanzania
Dominance among male chimpanzees in the Mahale Mountains National Park, Tanzania: A preliminary study
Possible Medicinal Plants Used by Wild Chimpanzees, and Their Physiologically Active Compounds
As a new approach to discovering physiologically active natural compounds, possible medicinal plants used by wild chimpanzees have been studied. Physiological and biological activity tests of three such plants, Vernonia amygdalina, Aspilia mossambicensis, and Ficus exasperata, indicated that they contain a variety of active compounds. Particularly, the activities of V. amygdalina were remarkable, and hence further chemical studies were conducted.…
Reproductive parameters of female Japanese macaques: Thirty years data from the arashiyama troops, Japan
Tool-assisted predation on a squirrel by a female chimpanzee in the Mahale Mountains, Tanzania
Physiological activities and the active constituents of potentially medicinal plants used by wild chimpanzees of the Mahale mountains, Tanzania
On Home Bases, Nesting Sites, Activity Centers, and New Analytic Perspectives
Are daughters more costly to produce for Japanese macaque mothers?: Sex of the offspring and subsequent interbirth intervals
Geochemistry and clay mineralogy of termite mound soil and the role of geophagy in chimpanzees of the Mahale Mountains, Tanzania
Chemical Ecology of the Medicinal Use of Vernonia amygdalina by Chimpanzees
Vernonia amygdalina (Compositae) has been suggested to be a medicinal plant used by wild chimpanzee in the Mahale Moutains National Park, Tanzania. From this plant, the bitter and related constituents were isolated. There were four known sesquiterpene lactones, and seven new steroid glucosides and two aglycones of these glucosides. The sesquiterpene lactones showed high cytotoxic activity against P-388 and L-1210 cells, and antibacterial activiti…
Leaf-swallowing by chimpanzees: A behavioral adaptation for the control of strongyle nematode infections
Seasonal trends in intestinal nematode infection and medicinal plant use among chimpanzees in the Mahale Mountains, Tanzania
Current evidence for self-medication in primates: A multidisciplinary perspective
The study of self-medication in non-human primates sheds new light on the complex interactions of animal, plant and parasite. A variety of non-nutritional plant secondary compounds and nutrient-poor bark is found in the primate diet, but little is yet known about the possible medicinal consequences of their ingestion. Recent studies of the African great apes support a hypothesis in progress that the non-nutritional ingestion of certain plant spec…
Factors Affecting Party Size in Chimpanzees of the Mahale Mountains
Why dominants do not consistently attain high mating and reproductive success: A review of longitudinal Japanese macaque studies
Self-induced Increase of Gut Motility and the Control of Parasitic Infections in Wild Chimpanzees
Hormonal Correlates of Maternal Style in Captive Macaques (Macaca fuscata and M. mulatta)
The Adaptive Significance of Geophagy for Japanese Macaques (Macaca fuscata) at Arashiyama, Japan
New Evidence for Leaf Swallowing and Oesophagostomum Infection in Bonobos (Pan paniscus)
Long-Term Trends in Matrilineal Inbreeding Among the Japanese Macaques of Arashiyama B Troop
The Four Chimpanzee Skulls Collected in the Mahale Mountains, Tanzania
Morphological and osteological data taken from chimpanzee skeletal materials gathered at chimpanzee research sites are accompanied by life history data (e.g. diet, environment of habitat, sexual activity and social relationship). Unfortunately morphological and osteological studies of chimpanzee skeletal remains from long-term field research projects are rare (Yasui and Takahata, 1983, an infant of P. t. schweinfurthii from Mahale mountains Natio…
Increase in tannin consumption by sifaka (Propithecus verreauxi verreauxi) females during the birth season: A case for self-medication in prosimians?
Extraordinarily low bone mineral density in an old female chimpanzee (Pan troglodytes schweinfurthii) from the Mahale Mountains National Park
Biology (89 works) · Primate Behavior and Ecology (80 works) · Animal ecology (45 works) · Zoology (44 works) · Animal Vocal Communication and Behavior (39 works) · Ecology (38 works) · Animal Behavior and Reproduction (37 works) · Ecology (35 works) · Geography (35 works) · Psychology (27 works)