A5084079261- Primate Behavior and Ecology
- Animal Behavior and Reproduction
- Child and Animal Learning Development
- Pleistocene-Era Hominins and Archaeology
- Wildlife Ecology and Conservation
- Evolutionary Psychology and Human Behavior
- Evolutionary Game Theory and Cooperation
- Animal Vocal Communication and Behavior
- Marine animal studies overview
- Evolution and Paleontology Studies
- Diet and metabolism studies
- Avian ecology and behavior
- Human-Animal Interaction Studies
- Insect and Arachnid Ecology and Behavior
- RNA regulation and disease
- Environmental Education and Sustainability
- Adipose Tissue and Metabolism
- Multilingual Education and Policy
- Language, Discourse, Communication Strategies
- Bat Biology and Ecology Studies
- Economic theories and models
- Silicon Effects in Agriculture
- Amphibian and Reptile Biology
- Geology and Paleoclimatology Research
- Animal and Plant Science Education
Dartmouth College
2019-2025
Dartmouth Hospital
2024
Chulalongkorn University
2024
Durham University
2024
University of California, Merced
2024
The Ohio State University
2020
Human brain size nearly quadrupled in the six million years since Homo last shared a common ancestor with chimpanzees, but human brains are thought to have decreased volume end of Ice Age. The timing and reason for this decrease is enigmatic. Here we use change-point analysis estimate changes rate hominin evolution. We find that experienced positive at 2.1 1.5 ago, coincident early evolution technological innovations evident archeological record. But also reduction was surprisingly recent,...
Bipedal trackways discovered in 1978 at Laetoli site G, Tanzania and dated to 3.66 million years ago are widely accepted as the oldest unequivocal evidence of obligate bipedalism human lineage
Few animals have the cognitive faculties or prehensile abilities needed to eliminate tooth-damaging grit from food surfaces. Some populations of monkeys wash sand foods when standing water is readily accessible, but this propensity varies within groups for reasons unknown. Spontaneous food-washing emerged recently in a group long-tailed macaques ( Macaca fascicularis ) inhabiting Koram Island, Thailand, and it motivated us explore factors that drive individual variability. We measured...
<title>Abstract</title> Few animals have the cognitive faculties or prehensile abilities needed to eliminate tooth-damaging grit from food surfaces. Some populations of monkeys wash sand foods when standing water is readily accessible, but this propensity varies within groups for reasons unknown. Spontaneous food-washing emerged recently in a group long-tailed macaques (<italic>Macaca fascicularis</italic>) inhabiting Koram Island, Thailand, and it motivated us explore factors that drive...
Abstract Silica is crucial to terrestrial plant life and geochemical cycling on Earth. It also implicated in the evolution of mammalian teeth, but there debate over which type siliceous particle has exerted strongest selective pressure tooth morphology. Debate revolves around amorphous silica bodies (phytoliths) present plants various forms grit—that is, crystalline quartz (sand, soil, dust)—on surfaces. The problem that conventional measures often quantify both types simultaneously. Here we...
Human brain reduction from the Late Pleistocene/Holocene to modern day is a longstanding anthropological observation documented with numerous lines of independent evidence. In recent study (DeSilva et al., 2021; Front. Ecol. Evol .), we analyzed large compilation fossil and human crania determined that this was surprisingly recent, occurring rapidly within past 5,000 3,000 years history. We attributed such change as consequence population growth cooperative intelligence drew parallels...
Stable isotopes of oxygen often vary within a community primates. For example, folivorous monkeys that forage in the upper reaches forest canopy tend to evince high δ 18 O values, whereas those prefer understory have lower values. Given leaves also particularly higher canopy, there is uncertainty as which behavioural variable – vertical stratification or folivory primary determinant variation Here, we explore further values from Taï Forest ( n = 7 species; 33 individuals) by examining...
The forelimbs of hominoid primates (apes) are decidedly more flexible than those monkeys, especially at the shoulder, elbow and wrist joints. It is tempting to link greater mobility these joints functional demands vertical climbing below-branch suspension, but field-based kinematic studies have found few differences between chimpanzees monkeys when comparing forelimb excursion angles during ascent (upclimbing). There is, however, a strong theoretical argument for focusing instead on descent...
Abstract Desert locusts Schistocerca gregaria are threatening the food security of millions people and devastating economies in eastern Africa northern India. The ongoing outbreak is largest seven decades. These events give us cause to reflect on natural history locusts, our fraught relationship with them, how they represented American popular culture others. Symbolic representations span millennia most have roots life cycle locusts—they transform, swarm, devastate specific crops. There...
<title>Abstract</title> Few animal species have the cognitive faculties or prehensile abilities needed to eliminate costly tooth-damaging grit from food surfaces. Some populations of monkeys wash sandy foods when standing water is readily accessible, but this propensity varies within groups for reasons unknown. Spontaneous food-washing emerged recently in a group long-tailed macaques (<italic>Macaca fascicularis</italic>) on Koram Island, Thailand, motivating us explore factors that drive...
<title>Abstract</title> Few animal species have the cognitive faculties or prehensile abilities needed to eliminate costly tooth-damaging grit from food surfaces. Some populations of monkeys wash sandy foods when standing water is readily accessible, but this propensity varies within groups for reasons unknown. Spontaneous food-washing emerged recently in a group long-tailed macaques (<italic>Macaca fascicularis</italic>) on Koram Island, Thailand, motivating us explore factors that drive...
Few animal species have the cognitive faculties or prehensile abilities needed to eliminate costly tooth-damaging grit from food surfaces. Some populations of monkeys wash sand foods when standing water is readily accessible, but this propensity varies within groups for reasons unknown. Spontaneous food-washing emerged recently in a group long-tailed macaques ( Macaca fascicularis ) inhabiting Koram Island, Thailand, and it motivated us explore factors that drive individual variability. We...
Few animal species have the cognitive faculties or prehensile abilities needed to eliminate costly tooth-damaging grit from food surfaces. Some populations of monkeys wash sand foods when standing water is readily accessible, but this propensity varies within groups for reasons unknown. Spontaneous food-washing emerged recently in a group long-tailed macaques ( Macaca fascicularis ) inhabiting Koram Island, Thailand, and it motivated us explore factors that drive individual variability. We...
<title>Abstract</title> Few animals have the cognitive faculties or prehensile abilities needed to eliminate tooth-damaging grit from food surfaces. Some populations of monkeys wash sand foods when standing water is readily accessible, but this propensity varies within groups for reasons unknown. Spontaneous food-washing emerged recently in a group long-tailed macaques (<italic>Macaca fascicularis</italic>) inhabiting Koram Island, Thailand, and it motivated us explore factors that drive...
The function of the browridge in primates is a subject enduring debate. Early studies argued for role resisting masticatory stresses, but recent have suggested sexual signaling as biological role. We tested associations between circumorbital form, diet, oral processing, and social behavior two species colobus monkey-the king (Colobus polykomos) western red or bay (Piliocolobus badius).We quantified size dimorphism sample 98 crania. Controlling age facial size, we whether variation morphology...