Adrian A Barnett
Biographic Data
| ID | 4315751 |
|---|---|
| NAME | Adrian A Barnett |
| GIVEN NAMES | Adrian A |
| FAMILY NAME | Barnett |
| SIGNATURE | BARNETT A A |
| AFFILIATIONS | National Institute of Amazonian Research |
| ORCID | 0000-0002-8829-2719 |
| VERIFIED | Yes |
| TOTAL WORKS | 21 |
| TOTAL CITATIONS | 30 |
| AUTHOR COUNT | 21 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2005 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 4 |
Male Infant Transport and Female Grooming of an Infant in White Bald-headed Uakaris (Cacajao calvus) in the Lower–Middle Juruá River, Brazilian Amazon
Parental investment in primates varies widely, shaped by mating systems, paternity certainty, and ecology. Pitheciines ( Cacajao , Chiropotes , Pithecia ) show diverse social organisation from small, cohesive units in Pithecia to large multimale–multifemale groups with fission–fusion dynamics in Cacajao and Chiropotes (Gregory & Bowler, 2015 ). In the pitheciid genus Plecturocebus , paternal care, including infant transport, is extensive (Wood & …
Eat the fruit earlier: Sakis ( Pithecia chrysocephala ) show enhanced temporal fruit resource access compared with squirrel monkeys ( Saimiri sciureus ) in an urban forest fragment in Brazil
Fruit availability experienced by different primate species is likely to vary due to species‐specific fruit use, even within the same habitat and timeframe. Pitheciines, primates of the subfamily Pitheciinae , particularly favor the seeds of unripe fruits. Researchers consider this dietary characteristic an adaptation to increase access to fruit resources. However, the relative advantages of pitheciines over sympatric non‐pitheciine non‐seed‐eati…
Throat-to-Chest Behavior in Coimbra-Filho’s Titi Monkeys (Callicebus coimbrai) Is Potentially Associated with Olfactory Communication
A Life in Fragments: The Ecology, Behavior, and Conservation of the Recently Described Parecis Plateau Titi Monkey (Plecturocebus parecis)
Observation of Masturbation After Visual Sexual Stimuli From Conspecifics in a Captive Male Bearded Capuchin (Sapajus libidinosus)
Pulp Fiction: Why Some Populations of Ripe-Fruit Specialists Ateles chamek and A. marginatus Prefer Insect-Infested Foods
For emergency only: Terrestrial feeding in Coimbra-Filho’s titis reflects seasonal arboreal resource availability
Fermented food consumption in wild nonhuman primates and its ecological drivers
OBJECTIVES: Although fermented food use is ubiquitous in humans, the ecological and evolutionary factors contributing to its emergence are unclear. Here we investigated the ecological contexts surrounding the consumption of fruits in the late stages of fermentation by wild primates to provide insight into its adaptive function. We hypothesized that climate, socioecological traits, and habitat patch size would influence the occurrence of this beha…
Terrestrial Behavior in Titi Monkeys (Callicebus, Cheracebus, and Plecturocebus): Potential Correlates, Patterns, and Differences between Genera
The Vocal Repertoire of Golden-Faced Sakis, Pithecia chrysocephala, and the Relationship Between Context and Call Structure
Run, hide, or fight: Anti-predation strategies in endangered red-nosed cuxiú (Chiropotes albinasus, Pitheciidae) in southeastern Amazonia
Pitheciid vocal communication: What Can We Say About What They Are Saying
The variation in ecological traits in pitheciids allows investigation of vocal communication over a range of social and acoustic circumstances. In this review paper we present a summary of the history of pitheciid vocal studies and review i) the status of our current knowledge of the vocal repertoire sizes of pitheciid primates, ii) how much do we understand about the context of different acoustic signals and iii) how can we potentially use our k…
Pitheciid research comes of age: Past puzzles, current progress, and future priorities
For a long time, members of the Pitheciidae were among the least studied of all Neotropical primates. But times have changed. Here, we trace the trajectory of this change and show how the articles in this special edition illustrate new knowledge and developments in our understanding of pitheciid ecology, behavior, and conservation. We propose new directions and priorities for future research, especially to ensure the effective conservation of pit…
Mixed‐species associations in cuxiús (genus Chiropotes )
Polyspecific or mixed-species associations, where two or more species come together to forage and travel as a unit, have been reported in many primate species. These associations appear to offer a number of benefits to the species involved including increased foraging efficiency and decreased risk of predation. While several researchers have suggested that cuxiús (genus Chiropotes) form mixed-species associations, previous studies have not identi…
Geographic comparison of plant genera used in frugivory among the pitheciids Cacajao , Callicebus , Chiropotes , and Pithecia
Pitheciids are known for their frugivorous diets, but there has been no broad-scale comparison of fruit genera used by these primates that range across five geographic regions in South America. We compiled 31 fruit lists from data collected from 18 species (three Cacajao, six Callicebus, five Chiropotes, and four Pithecia) at 26 study sites in six countries. Together, these lists contained 455 plant genera from 96 families. We predicted that 1) c…
Foraging with finesse: A hard‐fruit‐eating primate selects the weakest areas as bite sites
OBJECTIVES: Fruit husks are rarely uniformly hard, varying in penetrability via sulci and changes in thickness. We tested whether a hard-food specialist primate i) bites randomly on food fruit husk surfaces to access seeds, or ii) selects areas most easily penetrated by canines. We consider this would occur so as to minimize deployed mechanical force, energetic expenditure and risk of dental breakage when feeding. METHODS: A sulcus is the natural…
Arthropod Predation by a Specialist Seed Predator, the Golden-backed Uacari (Cacajao melanocephalus ouakary, Pitheciidae) in Brazilian Amazonia
Sleeping site selection by golden-backed uacaris, Cacajao melanocephalus ouakary (Pitheciidae), in Amazonian flooded forests
Terrestrial Activity in Pitheciins ( C acajao , C hiropotes , and P ithecia )
Neotropical monkeys of the genera C acajao , C hiropotes , and P ithecia ( P itheciidae) are considered to be highly arboreal, spending most of their time feeding and traveling in the upper canopy. Until now, the use of terrestrial substrates has not been analyzed in detail in this group. Here, we review the frequency of terrestrial use among pitheciin taxa to determine the ecological and social conditions that might lead to such behavior. We col…
Ethogram and Natural History of Golden-backed Uakaris (Cacajao melanocephalus)
Diet, Habitat Selection and Natural History of Cacajao melanocephalus ouakary in Jaú National Park, Brazil1
Diet, Habitat Selection and Natural History of Cacajao melanocephalus ouakary in Jaú National Park, Brazil1
Terrestrial Behavior in Titi Monkeys (Callicebus, Cheracebus, and Plecturocebus): Potential Correlates, Patterns, and Differences between Genera
Ethogram and Natural History of Golden-backed Uakaris (Cacajao melanocephalus)
Fermented food consumption in wild nonhuman primates and its ecological drivers
OBJECTIVES: Although fermented food use is ubiquitous in humans, the ecological and evolutionary factors contributing to its emergence are unclear. Here we investigated the ecological contexts surrounding the consumption of fruits in the late stages of fermentation by wild primates to provide insight into its adaptive function. We hypothesized that climate, socioecological traits, and habitat patch size would influence the occurrence of this beha…
Pulp Fiction: Why Some Populations of Ripe-Fruit Specialists Ateles chamek and A. marginatus Prefer Insect-Infested Foods
Pitheciid vocal communication: What Can We Say About What They Are Saying
The variation in ecological traits in pitheciids allows investigation of vocal communication over a range of social and acoustic circumstances. In this review paper we present a summary of the history of pitheciid vocal studies and review i) the status of our current knowledge of the vocal repertoire sizes of pitheciid primates, ii) how much do we understand about the context of different acoustic signals and iii) how can we potentially use our k…
Diet, Habitat Selection and Natural History of Cacajao melanocephalus ouakary in Jaú National Park, Brazil1
Ethogram and Natural History of Golden-backed Uakaris (Cacajao melanocephalus)
Sleeping site selection by golden-backed uacaris, Cacajao melanocephalus ouakary (Pitheciidae), in Amazonian flooded forests
Terrestrial Activity in Pitheciins ( C acajao , C hiropotes , and P ithecia )
Neotropical monkeys of the genera C acajao , C hiropotes , and P ithecia ( P itheciidae) are considered to be highly arboreal, spending most of their time feeding and traveling in the upper canopy. Until now, the use of terrestrial substrates has not been analyzed in detail in this group. Here, we review the frequency of terrestrial use among pitheciin taxa to determine the ecological and social conditions that might lead to such behavior. We col…
Arthropod Predation by a Specialist Seed Predator, the Golden-backed Uacari (Cacajao melanocephalus ouakary, Pitheciidae) in Brazilian Amazonia
Pitheciid research comes of age: Past puzzles, current progress, and future priorities
For a long time, members of the Pitheciidae were among the least studied of all Neotropical primates. But times have changed. Here, we trace the trajectory of this change and show how the articles in this special edition illustrate new knowledge and developments in our understanding of pitheciid ecology, behavior, and conservation. We propose new directions and priorities for future research, especially to ensure the effective conservation of pit…
Mixed‐species associations in cuxiús (genus Chiropotes )
Polyspecific or mixed-species associations, where two or more species come together to forage and travel as a unit, have been reported in many primate species. These associations appear to offer a number of benefits to the species involved including increased foraging efficiency and decreased risk of predation. While several researchers have suggested that cuxiús (genus Chiropotes) form mixed-species associations, previous studies have not identi…
Geographic comparison of plant genera used in frugivory among the pitheciids Cacajao , Callicebus , Chiropotes , and Pithecia
Pitheciids are known for their frugivorous diets, but there has been no broad-scale comparison of fruit genera used by these primates that range across five geographic regions in South America. We compiled 31 fruit lists from data collected from 18 species (three Cacajao, six Callicebus, five Chiropotes, and four Pithecia) at 26 study sites in six countries. Together, these lists contained 455 plant genera from 96 families. We predicted that 1) c…
Foraging with finesse: A hard‐fruit‐eating primate selects the weakest areas as bite sites
OBJECTIVES: Fruit husks are rarely uniformly hard, varying in penetrability via sulci and changes in thickness. We tested whether a hard-food specialist primate i) bites randomly on food fruit husk surfaces to access seeds, or ii) selects areas most easily penetrated by canines. We consider this would occur so as to minimize deployed mechanical force, energetic expenditure and risk of dental breakage when feeding. METHODS: A sulcus is the natural…
Run, hide, or fight: Anti-predation strategies in endangered red-nosed cuxiú (Chiropotes albinasus, Pitheciidae) in southeastern Amazonia
Pitheciid vocal communication: What Can We Say About What They Are Saying
The variation in ecological traits in pitheciids allows investigation of vocal communication over a range of social and acoustic circumstances. In this review paper we present a summary of the history of pitheciid vocal studies and review i) the status of our current knowledge of the vocal repertoire sizes of pitheciid primates, ii) how much do we understand about the context of different acoustic signals and iii) how can we potentially use our k…
Terrestrial Behavior in Titi Monkeys (Callicebus, Cheracebus, and Plecturocebus): Potential Correlates, Patterns, and Differences between Genera
The Vocal Repertoire of Golden-Faced Sakis, Pithecia chrysocephala, and the Relationship Between Context and Call Structure
For emergency only: Terrestrial feeding in Coimbra-Filho’s titis reflects seasonal arboreal resource availability
Fermented food consumption in wild nonhuman primates and its ecological drivers
OBJECTIVES: Although fermented food use is ubiquitous in humans, the ecological and evolutionary factors contributing to its emergence are unclear. Here we investigated the ecological contexts surrounding the consumption of fruits in the late stages of fermentation by wild primates to provide insight into its adaptive function. We hypothesized that climate, socioecological traits, and habitat patch size would influence the occurrence of this beha…
Pulp Fiction: Why Some Populations of Ripe-Fruit Specialists Ateles chamek and A. marginatus Prefer Insect-Infested Foods
Observation of Masturbation After Visual Sexual Stimuli From Conspecifics in a Captive Male Bearded Capuchin (Sapajus libidinosus)
Eat the fruit earlier: Sakis ( Pithecia chrysocephala ) show enhanced temporal fruit resource access compared with squirrel monkeys ( Saimiri sciureus ) in an urban forest fragment in Brazil
Fruit availability experienced by different primate species is likely to vary due to species‐specific fruit use, even within the same habitat and timeframe. Pitheciines, primates of the subfamily Pitheciinae , particularly favor the seeds of unripe fruits. Researchers consider this dietary characteristic an adaptation to increase access to fruit resources. However, the relative advantages of pitheciines over sympatric non‐pitheciine non‐seed‐eati…
Throat-to-Chest Behavior in Coimbra-Filho’s Titi Monkeys (Callicebus coimbrai) Is Potentially Associated with Olfactory Communication
A Life in Fragments: The Ecology, Behavior, and Conservation of the Recently Described Parecis Plateau Titi Monkey (Plecturocebus parecis)
Male Infant Transport and Female Grooming of an Infant in White Bald-headed Uakaris (Cacajao calvus) in the Lower–Middle Juruá River, Brazilian Amazon
Parental investment in primates varies widely, shaped by mating systems, paternity certainty, and ecology. Pitheciines ( Cacajao , Chiropotes , Pithecia ) show diverse social organisation from small, cohesive units in Pithecia to large multimale–multifemale groups with fission–fusion dynamics in Cacajao and Chiropotes (Gregory & Bowler, 2015 ). In the pitheciid genus Plecturocebus , paternal care, including infant transport, is extensive (Wood & …
Biology (19 works) · Primate Behavior and Ecology (19 works) · Ecology (15 works) · Animal ecology (11 works) · Habitat (10 works) · Zoology (10 works) · Animal Vocal Communication and Behavior (9 works) · Geography (7 works) · Amphibian and Reptile Biology (6 works) · Animal Behavior and Reproduction (6 works)