Articles tagged with Primates
In a study published in PLOS, gelada monkeys demonstrated an understanding of complex vocal exchanges involving distress calls and prosocial comforting responses. The monkeys exhibited surprise when such vocal exchanges were manipulated to violate their expectations.
Researchers found that eastern and western chimpanzees exhibit different drumming patterns, including evenly spaced hits and alternating intervals. Western chimpanzees use a faster tempo and integrated their drumming earlier in pant-hoot vocalizations.
A new study of gorillas found that friendly relationships have varying costs and benefits, depending on group size and sex. For example, female gorillas with strong social bonds tend to get ill less often, but have fewer offspring.
A team of researchers has comprehensively predicted the location of non-B DNA structures in great apes using newly available telomere-to-telomere genomes. The study suggests that non-B DNA is enriched in these segments and may play a role in genetic diseases and cancer, with potential new functions discovered.
A study by University College London anthropologists found that macaque mothers experience a short period of physical restlessness after the death of an infant, but do not exhibit typical human signs of grief. In contrast to human bereavement, macaque mothers spent less time resting in the first two weeks after their infants' deaths.
Tadashi Isa returns to NIPS as director with goal to foster young researchers and maintain balance between cutting-edge research and collaborative studies. He aims to elevate physiological and neuroscience research in Japan to a world-class level.
Researchers discovered how monkeys produce 'voice breaks' and 'ultra-yodels' using their vocal membranes, which allow for a wider range of calls. These unique vocalizations enable monkeys to communicate in different ways, particularly in complex social lives.
Female Guinea baboons court males with special foraging skills more intensively due to the short-term benefits they provide. This suggests that females prioritize immediate rewards over long-term evaluations of male competence.
Neuroscientists investigated how the brain implements flexibility in decision-making, revealing that it either reuses known neural pathways or develops new patterns. The findings help understand why some adaptations are more difficult than others, especially in social interactions and motor tasks.
Researchers found genetic variants that confer a benefit to chimpanzees in specific habitats, particularly those related to malaria. The study suggests that climate and land use changes will impact different chimpanzee groups differently.
Researchers at the University of Tokyo discover that the patterns of spontaneous activity and stimulus-evoked response are similar in lower visual areas of the cerebral cortex but gradually become independent as one moves to higher visual areas. This orthogonal relationship helps explain how sensory perception remains stable despite co...
A new study suggests that chimpanzees exhibit complex behaviors involving the production of elaborate sequences, including planning and adjusting action sequences on the fly. This research provides further evidence that chimpanzees possess human-like technical flexibility.
Researchers found that grooming and play behaviors can spread among chimpanzee group members, promoting group cohesion. Younger chimps were more likely to engage in play contagion, while close social partners showed greater grooming contagion.
The study reveals the remarkable adaptability of the Cat Ba langur, which has retained key genetic traits that enable it to drink salt water and survive in its isolated environment. This adaptation is a direct consequence of their unique island home, where freshwater sources are limited.
A genetics study suggests that bonobos have three distinct populations, each with unique genetic patterns. The research highlights the need for conservation efforts to protect these groups and ensure the species' survival.
Researchers studied female crested gibbon dances, discovering they display a grouping structure, rhythm, and are used for visual communication, including non-sexual arousal or frustration. The dances have similarities with human movements but likely evolved independently, suggesting an innate component.
A Dartmouth study suggests that social rank determines whether animals prioritize short-term energy consumption over long-term health, with dominant monkeys consuming food quickly to maintain dominance, while lower-ranked monkeys invest time in washing their food to prevent tooth damage. The findings shed light on the disposable soma h...
Researchers found same-sex behavior in primates is common, yet underreported due to perceived rarity, according to an online expert survey. The study suggests that experts often overlook this phenomenon because they believe it's rare.
A new study by University of Colorado Boulder primatologist Michelle Sauther found that smaller animals like the lesser galago face extra challenges adapting to climate change. The research highlights the importance of protecting these small and nocturnal species, which are often overlooked in conservation efforts.
A new study reveals that humans are losing important cellulose-degrading microbes in their gut microbiome, especially in industrial societies. The loss of these microbes is linked to a shift away from fiber-rich diets, which are essential for maintaining a balanced intestinal flora.
A new study on wild chimpanzees reveals that mother-chimp play is crucial for their offspring's physical and social development, even during times of food stress. The research suggests that the persistence of mother-child play is important for chimp development, and sets primates apart from other mammals in terms of play behavior.
Researchers developed a novel method to model 3D tongue morphology from fossilized hominin skulls, providing insights into the evolution of human speech. The approach involves geometrical skull matching and has potential applications for understanding primate tongue development.
A study published in PNAS found that 70 million years ago, primates' ancestors mostly lived in pairs, with only 15% opting for solitary lifestyles. This flexible pair-living ancestor likely offered benefits such as easier reproduction and thermoregulation.
A study of wild orangutan males reveals that simply beating rivals in competitions does not lead to siring success. Instead, successful fathers spend more time near the females with whom they mate, suggesting a strategy of concentrating on one neighborhood rather than roaming widely is key.
Researchers found that chimpanzees extract termites from mounds most successfully when rainfall increases, until a threshold of 200mm is reached. This suggests that termite fishing is a seasonal activity for chimpanzees, with the best opportunities during the early wet season.
Researchers created the world's largest primate brain-wide atlas using single-cell technologies, revealing over 4 million cellular profiles. The study provides a comprehensive multimodal molecular atlas to explore links between molecules, cells, brain function and disease.
Wild orangutans produce two distinct sounds simultaneously, mirroring songbirds and human beatboxers. This finding has significant implications for the evolution of human speech and our shared ancestors' vocal capabilities.
Researchers found that orangutans can produce two separate sounds simultaneously, like songbirds or human beatboxers. This phenomenon may hold clues about the evolution of human language and its similarities to beatboxing.
New research finds masturbation serves an adaptive function in primates, increasing reproductive success and aiding pathogen avoidance. The study, based on nearly 400 sources, reveals masturbation's evolutionary history and its co-evolution with multi-male mating systems.
The study reveals new insights into primate evolution, genetic diversity, and the uniqueness of humans. It also highlights the importance of preserving primate species due to high genetic diversity, which enables adaptation to changing environments.
A study from Swansea University and the University of Cape Town tracked the movements of 13 chacma baboons in Cape Town, South Africa. The data revealed that female baboons stopped using urban space after giving birth, suggesting they adapt to reduce risks for their newborns.
A USC researcher and international team identified consistent DNA base pairs across 240 mammals, including humans, that play a key role in human disease. These 'constrained' base pairs remained generally consistent over millions of years of evolution and are significantly linked to genetic variation.
Researchers tracked social grooming behavior in wild baboons using collars-mounted accelerometers, identifying and quantifying giving and receiving grooming with high accuracy. The study's findings have important implications for the study of social behavior in animals, particularly non-human primates.
A genetic census has been used to estimate the number and population structure of critically endangered western chimpanzees in West Africa. The analysis identified a total of 136 chimpanzees living in four different communities, with high levels of shared ancestry and genetic diversity.
Fossilized mammals reveal that early primates adapted to life in the high Arctic during a time of intense global warming, with limited biodiversity. Two new species, Ignacius dawsonae and Ignacius mckennai, were identified as close relatives of early primates, exhibiting distinct adaptations for their unusual environment.
Fossils of two near-primate species, Ignacius mckennai and I. dawsonae, dating back 52 million years have been discovered on Ellesmere Island in layers linked with the early Eocene epoch. The findings suggest that these Arctic-dwelling primates evolved more robust teeth and jaws to cope with tougher food sources during winter months.
Research suggests that the ratio of adult females to males influences sex roles in animal species. Variation in this ratio can lead to differences in mate competition, parental care, and social behavior among species. The study proposes that understanding these dynamics can inform conservation efforts.
Researchers discovered that wild chimpanzees exhibit facial similarities with their family members, especially as they age. The study found that adult chimpanzees were the easiest to match, while younger infants and males were more challenging, suggesting different pressures on biological family resemblance in these species.
A new study reveals that losing endangered fruit-eating animals in the Atlantic Forest could severely disrupt seed-dispersal networks, leaving plants without an effective means to regenerate. Nearly 55% of specialist plant species rely solely on these frugivores for seed dispersal.
Researchers mapped the spread of pathogens in wild macaque populations near human settlements, finding that monkeys with high human interactions cause larger outbreaks. The study used computer simulations to predict disease transmission and identified key factors influencing outbreak size.
Western gorillas in zoos have developed a novel vocalization to get attention and food from their human caregivers. Researchers observed this unique behavior in response to food availability and interaction with zoo staff.
Researchers found that Gursky's spectral tarsier duets exhibit acoustic trade-offs in note rate and bandwidth, suggesting a relationship between physical fitness and vocal complexity. The study suggests that only physically fit individuals can easily produce broadband notes fast.
Researchers found that specific vocalizations, known as the 'hunting bark', recruit more group members to hunt and capture prey more effectively. Chimpanzees have been observed joining hunts after hearing these barks, increasing success rates.
Newborn marmosets practice face and mouth movements needed to call for help before birth. Human-like crying movements have been observed in the womb, suggesting a potential link between primate and human vocal development.
Researchers develop system to measure power distribution between sexes in animals, finding females rule in some species, with reproductive control as common thread. The study proposes a new framework to quantify intersexual power relationships across mammalian societies.
Vervet monkeys have excellent cognitive skills for quickly appraising social context and planning routes accordingly. They make complex, multifactor decisions that consider contextual information, such as individual skill, rank, and competitor distance.
Researchers have discovered that P. malariae, a malaria parasite infecting humans, originated in African apes before evolving to infect people. This breakthrough reveals the evolutionary links between the two species and sheds light on how the parasite adapted to infect humans.
Research found that adult howler monkey play increases when faced with competition over fruit, a valuable resource. This playful behavior helps regulate relationships within the social group and avoid conflict, unlike collective grooming used by some other primates.
Research shows female chimpanzees tend to avoid villages and farmland, while males are more likely to encounter humans, leading to smaller social gatherings for females. This sex difference in risk perception could have significant consequences for the survival of chimpanzees.
In a study published in PLOS ONE, researchers found that untrained captive orangutans can complete two major steps in making and using stone tools: striking rocks together and cutting using sharp stones. This suggests that the use of stone tools may have existed in our last common ancestor with orangutans 13 million years ago.
A study published in PLOS ONE found that younger people are more interested in owning exotic pets, such as pythons, than older generations. The research suggests a growing trend towards unusual pet ownership among younger populations.
Researchers found that wild chimpanzees do not independently invent complex tool use behaviors like nut cracking. Instead, they learn from observing and imitating others, similar to humans. This challenges the long-held assumption that chimpanzee culture is non-cumulative.
A new study has shed light on the gut microbiome of gorillas, revealing significant diversity among individuals and institutions. The research found that even healthy gorillas can have unique microbial profiles, emphasizing the importance of understanding individual context for health assessment.
Research using ring-tailed lemurs shows that fecal microbiota transplants can stabilize and restore a healthy gut microbiome after antibiotic use. The study confirms the effectiveness of this ancient treatment for reducing the negative effects of antibiotics on the gut, which can cause severe diarrhea and abdominal pain.
A new study found that female bushbabies experience sharper increases in glucocorticoid hormones than males, indicating they may be under more stress and have less wiggle room to survive in a changing environment.
Researchers found that both male and female Guinea baboons initiate group departures and are equally successful in leading the group. The study's findings challenge the common assumption that only males lead groups, suggesting that social organization alone does not determine leadership roles.
Researchers at North Carolina State University developed formulas to calculate primate body size based on tooth root surface area. This discovery can be applied to partial and incomplete fossils, allowing scientists to determine the diet of ancient primates.
African mammals suffered huge losses around the Eocene-Oligocene boundary, similar to those experienced by European and Asian species. The study used fossil data from multiple sites in Africa to build evolutionary trees for five mammal groups, revealing a drastic extinction event followed by recovery with new adaptations.
A study published in Scientific Reports discovered dental caries in prehistoric primates, indicating a high fruit diet or sugar-rich foods. The prevalence of caries fluctuated over time, suggesting changes in the primates' diet between sugary and non-sugary foods.
A study published in iScience found that apes purposefully use signals to start and end interactions, similar to human politeness. The researchers observed that the social dynamics between interacting apes affected the communication efforts used, with closer bonobo pairs showing shorter entry and exit phases.