Elisabetta Visalberghi
Datos Biográficos
| ID | 123080 |
|---|---|
| NOMBRE | Elisabetta Visalberghi |
| NOMBRES | Elisabetta |
| APELLIDO | Visalberghi |
| FIRMA | VISALBERGHI E |
| AFILIACIONES | Institute of Cognitive Sciences and Technologies |
| ORCID | 0000-0001-7407-5468 |
| VERIFICADO | Sí |
| TOTAL DE OBRAS | 62 |
| TOTAL DE CITAS | 245 |
| TOTAL COMO AUTOR | 62 |
| TOTAL COMO EDITOR | 0 |
| PRIMER AÑO DE PUBLICACIÓN | 1983 |
| AÑO MÁS RECIENTE DE PUBLICACIÓN | 2026 |
| ÍNDICE H | 8 |
Bimanual Coordination and Right‐Hand Bias in Extractive Foraging by Wild Sapajus libidinosus
Bimanual coordination is considered a crucial factor in the evolution of manual lateralization. Experimental tasks requiring the simultaneous and coordinated use of both hands induce hand preferences at the population level across various nonhuman primate species studied in captive environments. However, to date, research investigating laterality in bimanual coordination within natural settings remains scarce, especially with respect to platyrrhi…
Homosexual Courtship in Young Wild Capuchin Monkeys
Optional tool use
Tool use in humans can be optional, that is, the same person can use different tools or no tool to achieve a given goal. Strategies to reach the same goal may differ across individuals and cultures and at the intra‐individual level. This is the first experimental study at the intra‐individual level on the optional use of a tool in wild nonhuman primates. We investigated optional tool use by wild bearded capuchins ( Sapajus libidinosus ) of Fazend…
Revisiting the fourth dimension of tool use
Adult and juvenile bearded capuchin monkeys handle stone hammers differently during nut‐cracking
Wild bearded capuchin monkeys ( Sapajus libidinosus ) habitually use stone hammers to crack open palm nuts and seeds on anvils. This activity requires strength, balance, and precise movement of a large stone with respect to the item placed on an anvil. We explored how well young monkeys cope with these challenges by examining their behavior and the behavior of adults while they cracked palm nuts using a stone. Using video records, we compared act…
Rare Bearded Capuchin (Sapajus libidinosus) Tool-Use Culture is Threatened by Land use Changes in Northeastern Brazil
Positional behavior and substrate use in wild adult bearded capuchin monkeys ( Sapajus libidinosus )
Natural selection for positional behavior (posture and locomotion) has at least partially driven the evolution of anatomical form and function in the order Primates. Examination of bipedal behaviors associated with daily activity patterns, foraging, and terrestrial habitat use in nonhuman primates, particularly those that adopt bipedal postures and use bipedal locomotion, allows us to refine hypotheses concerning the evolution of bipedalism in hu…
How bearded capuchin monkeys ( Sapajus libidinosus ) prepare to use a stone to crack nuts
Bearded capuchin monkeys crack nuts with naturally varying stone hammers, suggesting they may tune their grips and muscular forces to each stone. If so, they might use discrete actions on a stone before lifting and striking, and they would likely use these actions more frequently when the stone is larger and/or less familiar and/or when first initiating striking. We examined the behavior of (a) four monkeys (all proficient at cracking nuts) with …
Manual skills for processing plant underground storage organs by wild bearded capuchins
OBJECTIVES: Wild Sapajus libidinosus exploit underground storage organs (USOs) that require extraction and extensive processing before consumption. Since capuchin monkeys are small-sized extractive foragers that cannot perform forceful precision grips, we expected that: (a) they would use other body parts together with their hands, (b) older (and larger) capuchins would be more efficient than younger (and smaller) ones, and (c) capuchins would in…
Food or threat? Wild capuchin monkeys (Sapajus libidinosus) as both predators and prey of snakes
Foraging and inter‐individual distances of bearded capuchin monkeys
Extractive foraging is a skill young capuchin monkeys learn over time. A key unknown is whether unskilled individuals occupy spatial positions that increase their opportunities to learn. We observed the spatial positions of individuals in a group of capuchin monkeys in Northeastern Brazil. To improve our understanding of the relationship between learning by young capuchin monkeys and inter-individual distance, we investigated the associations bet…
Polymorphism of the 3′-UTR of the dopamine transporter gene (DAT) in New World monkeys
Stone-Tool Use in Wild Monkeys
Handheld tools transform the actor's body into a body-plus-tool system such that the fit of the actor's body, the tool, and the task demand channel movement in action. In this study, we performed a biomechanical analysis of percussive actions in wild bearded capuchin monkeys, Sapajus libidinosus at Fazenda Boa Vista, Brazil, as they cracked open tucum nuts with anvil-and-hammer tools from the frame of reference of the body-plus-tool system. The r…
The strategic role of the tail in maintaining balance while carrying a load bipedally in wild capuchins (Sapajus libidinosus)
Body mass in wild bearded capuchins, ( Sapajus libidinosus )
Body mass is fundamental for understanding growth, health, and aspects of life history but records of body mass are rarely available for wild primates. We documented the body mass of all individuals in a group of wild bearded capuchin monkeys (Sapajus libidinosus) at annual intervals for seven consecutive years. Sexual dimorphism in body mass was more pronounced than reported in the literature for adults in this genus: females in our sample were …
Factors affecting cashew processing by wild bearded capuchin monkeys ( Sapajus libidinosus , Kerr 1792)
Cashew nuts are very nutritious but so well defended by caustic chemicals that very few species eat them. We investigated how wild bearded capuchin monkeys (Sapajus libidinosus) living at Fazenda Boa Vista (FBV; Piauí, Brazil) process cashew nuts (Anacardium spp.) to avoid the caustic chemicals contained in the seed mesocarp. We recorded the behavior of 23 individuals toward fresh (N = 1282) and dry (N = 477) cashew nuts. Adult capuchins used dif…
Observations versus assessments of personality
Wild capuchin monkeys spontaneously adjust actions when using hammer stones of different mass to crack nuts of different resistance
OBJECTIVES: Expert tool users are known to adjust their actions skillfully depending on aspects of tool type and task. We examined if bearded capuchin monkeys cracking nuts with stones of different mass adjusted the downward velocity and the height of the stone when striking palm nuts. MATERIALS AND METHODS: During a field experiment carried out in FBV (Piauí, Brazil), eight adult wild capuchin monkeys (five males) cracked Orbygnia nuts of varied…
Age‐related variation in the mechanical properties of foods processed by S apajus libidinosus
OBJECTIVES: The diet of tufted capuchins (Sapajus) is characterized by annual or seasonal incorporation of mechanically protected foods. Reliance on these foods raises questions about the dietary strategies of young individuals that lack strength and experience to access these resources. Previous research has demonstrated differences between the feeding competencies of adult and juvenile tufted capuchins. Here we test the hypothesis that, compare…
Kinetics of bipedal locomotion during load carrying in capuchin monkeys
Wild Bearded Capuchins Process Cashew Nuts Without Contacting Caustic Compounds
Complex and flexible food processing was a key element for the evolutionary success of hominins, enlarging the range of exploitable foods while enabling occupation of new habitats. Only a few primate species crack open encased food by using percussive tools and/or avoid physical contact with irritant compounds by removing the structures containing them. We describe, for the first time, how a population of bearded capuchin monkeys ( Sapajus libidi…
Methodological Considerations in the Analysis of Fecal Glucocorticoid Metabolites in Tufted Capuchins (Cebus apella)
Analysis of fecal glucocorticoid (GC) metabolites has recently become the standard method to monitor adrenocortical activity in primates noninvasively. However, given variation in the production, metabolism, and excretion of GCs across species and even between sexes, there are no standard methods that are universally applicable. In particular, it is important to validate assays intended to measure GC production, test extraction and storage proced…
Contextualised behavioural measurements of personality differences obtained in behavioural tests and social observations in adult capuchin monkeys (Cebus apella)
Monomorphic Region of the Serotonin Transporter Promoter Gene in New World Monkeys
Genetic variation in the human serotonin system has long been studied because of its functional consequences and links to various neuropsychiatric and behavior‐related disorders. Among non‐human primates, the common marmosets ( Callithrix jacchus ) and tufted capuchins monkeys ( Cebus apella ) are becoming increasingly used as models to study the effects of genes, environments, and their interaction on physiology and complex behavior. In order to…
Flexible and conservative features of social systems in tufted capuchin monkeys
Socioecological models assume that primates adapt their social behavior to ecological conditions, and predict that food availability and distribution, predation risk and risk of infanticide by males affect patterns of social organization, social structure and mating system of primates. However, adaptability and variation of social behavior may be constrained by conservative adaptations and by phylogenetic inertia. The comparative study of closely…
Specific social influences on the acceptance of novel foods in 2–5-year-old children
Fallback foraging as a way of life
The genus Cebus is one of the best extant models for examining the role of fallback foods in primate evolution. Cebus includes the tufted capuchins, which exhibit skeletal features for the exploitation of hard and tough foods. Paradoxically, these seemingly “specialized” taxa belong to the most ubiquitous group of closely related primates in South America, thriving in a range of different habitats. This appears to be a consequence of their abilit…
Characteristics of hammer stones and anvils used by wild bearded capuchin monkeys ( Cebus libidinosus ) to crack open palm nuts
Capuchins living in Boa Vista (Piauì, Brazil) crack open hard palm nuts on hard, level surfaces (anvils) using stones (hammers) as percussive tools. This activity leaves diagnostic physical remains: distinctive shallow depressions (pits) on the surface of the anvil, cracked shells, and stone hammers on the anvil. To initiate comparison of percussive stone tool use and interpretation of the artifacts it produces across capuchins, chimpanzees, and …
The Role of Terrestriality in Promoting Primate Technology
Complex technology" has often been considered a hallmark of human evolution. However, recent findings show that wild monkeys are also capable of habitual tool use. Here we suggest that terrestriality may have been of crucial importance for the innovation, acquisition, and maintenance of "complex" technological skills in primates. Here we define complex technological skills as tool-use variants that include at least two tool elements (for example,…
Analysis of tufted capuchin ( Cebus apella ) courtship and sexual behavior repertoire
Sexual solicitations and initiative (proceptivity, sensu Beach [1976] Horm Behav 7: 105–138) are important components of the sexuality of females of many primate species. In the tufted capuchin ( Cebus apella ), female proceptivity characterizes the species' mating system. In study 1, we defined and discussed 20 behavioral patterns based on the observation of 6 females and 5 males living in two social groups. In study 2, each behavior, including …
Success and Understanding in Cognitive Tasks
Contextualised behavioural measurements of personality differences obtained in behavioural tests and social observations in adult capuchin monkeys (Cebus apella)
Kinematics and energetics of nut‐cracking in wild capuchin monkeys ( Cebus libidinosus ) in Piauí, Brazil
Wild bearded capuchins ( Cebus libidinosus , quadrupedal, medium‐sized monkeys) crack nuts using large stones. We examined the kinematics and energetics of the nut‐cracking action of two adult males and two adult females. From a bipedal stance, the monkeys raised a heavy hammer stone (1.46 and 1.32 kg, from 33 to 77% of their body weight) to an average height of 0.33 m, 60% of body length. Then, they rapidly lowered the stone by flexing the lower…
Homosexual Courtship in Young Wild Capuchin Monkeys
Age‐related variation in the mechanical properties of foods processed by S apajus libidinosus
OBJECTIVES: The diet of tufted capuchins (Sapajus) is characterized by annual or seasonal incorporation of mechanically protected foods. Reliance on these foods raises questions about the dietary strategies of young individuals that lack strength and experience to access these resources. Previous research has demonstrated differences between the feeding competencies of adult and juvenile tufted capuchins. Here we test the hypothesis that, compare…
Response Toward Novel Foods and Novel Objects in Wild Cebus apella
Cebus Meets Pan
Observations versus assessments of personality
Responses to a snake model in captive crab-eating macaques (Macaca fascicularis) and captive tufted capuchins (Cebus apella)
Tool use inCebus apella
Rare Bearded Capuchin (Sapajus libidinosus) Tool-Use Culture is Threatened by Land use Changes in Northeastern Brazil
Manual skills for processing plant underground storage organs by wild bearded capuchins
OBJECTIVES: Wild Sapajus libidinosus exploit underground storage organs (USOs) that require extraction and extensive processing before consumption. Since capuchin monkeys are small-sized extractive foragers that cannot perform forceful precision grips, we expected that: (a) they would use other body parts together with their hands, (b) older (and larger) capuchins would be more efficient than younger (and smaller) ones, and (c) capuchins would in…
Methodological Considerations in the Analysis of Fecal Glucocorticoid Metabolites in Tufted Capuchins (Cebus apella)
Analysis of fecal glucocorticoid (GC) metabolites has recently become the standard method to monitor adrenocortical activity in primates noninvasively. However, given variation in the production, metabolism, and excretion of GCs across species and even between sexes, there are no standard methods that are universally applicable. In particular, it is important to validate assays intended to measure GC production, test extraction and storage proced…
The Repertoire and Social Function of Facial Displays in Cebus capucinus
Facial Displays in Cebus apella
Wild capuchin monkeys spontaneously adjust actions when using hammer stones of different mass to crack nuts of different resistance
OBJECTIVES: Expert tool users are known to adjust their actions skillfully depending on aspects of tool type and task. We examined if bearded capuchin monkeys cracking nuts with stones of different mass adjusted the downward velocity and the height of the stone when striking palm nuts. MATERIALS AND METHODS: During a field experiment carried out in FBV (Piauí, Brazil), eight adult wild capuchin monkeys (five males) cracked Orbygnia nuts of varied…
Revisiting the fourth dimension of tool use
How Social Context, Token Value, and Time Course Affect Token Exchange in Capuchin Monkeys (Cebus apella)
Social Facilitation of Eating Familiar Food in Tufted Capuchins (Cebus apella)
Response of Cebus apella to Foods Flavored with Familiar or Novel Odor
Determinants of problem-solving success inSaimiri andCallicebus
Tool use inCebus apella
Responsiveness to objects in two social groups of tufted capuchin monkeys ( Cebus apella )
The responses of two social groups of Cebus apella to novel or familiar objects were examined, both in scarce and in abundant conditions. The aim was to obtain a description of capuchins' general norms of behavior toward objects, focusing on the variability across sex/age classes. Plain wooden blocks were presented to each group of monkeys in four phases. In phase I, the blocks were scarce and novel; in the following phases the blocks were abunda…
Tool use in capuchin monkeys
Responses to a snake model in captive crab-eating macaques (Macaca fascicularis) and captive tufted capuchins (Cebus apella)
Transfer index and mediational learning in tufted capuchins (Cebus apella)
Cebus Meets Pan
Success and Understanding in Cognitive Tasks
Social context and consumption of unfamiliar foods by capuchin monkeys (Cebus apella) over repeated encounters
Visalberghi and Fragaszy [Animal Behaviour 49:1089–1095, 1995] have shown that social influences affect acceptance of novel foods. However, little is known about the temporal course on which such influences act (e.g., for how long they persist and for how many encounters they are effective). To explore this issue, 11 adult tufted capuchins were observed during ten successive encounters with eight unfamiliar foods (phase 1, in which subjects were …
Social context and consumption of unfamiliar foods by capuchin monkeys (Cebus apella) over repeated encounters
Visalberghi and Fragaszy [Animal Behaviour 49:1089-1095, 1995] have shown that social influences affect acceptance of novel foods. However, little is known about the temporal course on which such influences act (e.g., for how long they persist and for how many encounters they are effective). To explore this issue, 11 adult tufted capuchins were observed during ten successive encounters with eight unfamiliar foods (phase 1, in which subjects were …
Analysis of tufted capuchin ( Cebus apella ) courtship and sexual behavior repertoire
Sexual solicitations and initiative (proceptivity, sensu Beach [1976] Horm Behav 7: 105–138) are important components of the sexuality of females of many primate species. In the tufted capuchin ( Cebus apella ), female proceptivity characterizes the species' mating system. In study 1, we defined and discussed 20 behavioral patterns based on the observation of 6 females and 5 males living in two social groups. In study 2, each behavior, including …
Tufted Capuchins (Cebus apella) Use Weight and Sound to Choose Between Full and Empty Nuts
Wild capuchins (Cebus apella) feed on high-energy husked fruits. Field researchers suggest that capuchins select beforehand the fruits that are worthwhile to crack open. We assessed whether captive capuchins use sound and/or weight as proximal causes to infer the fullness of a nut (full nuts are heavier and produce a low-pitched frequency sound when tapped). Two subjects had to choose between a nut shell containing food and another nut shell with…
Response Toward Novel Foods and Novel Objects in Wild Cebus apella
Response of Cebus apella to Foods Flavored with Familiar or Novel Odor
L'éthologie cognitive
Les singes s'épouillent, les araignées tissent, les lionnes chassent, les oiseaux chantent et les castors bâtissent. Les activités des animaux ont toujours beaucoup intéressé les biologistes et les psychologues. Mais l'étude des interactions de l'animal avec son milieu ne peut pas s'arrêter là : il faut aussi prendre en compte la perception que cet animal se fait des situations rencontrées ainsi que les émotions qu'il éprouve à leur sujet. Force …
Wild capuchin monkeys ( Cebus libidinosus ) use anvils and stone pounding tools
We conducted an exploratory investigation in an area where nut‐cracking by wild capuchin monkeys is common knowledge among local residents. In addition to observing male and female capuchin monkeys using stones to pound open nuts on stone “anvils,” we surveyed the surrounding area and found physical evidence that monkeys cracked nuts on rock outcrops, boulders, and logs (collectively termed anvils). Anvils, which were identified by numerous shall…
Monkeys as food, monkeys as kin
Social influences on the acquisition of sex-typical foraging patterns by juveniles in a group of wild tufted capuchin monkeys (Cebus nigritus)
Foraging traditions in primates are becoming the subject of increasing debate. Recent evidence for such a phenomenon was recently provided for wild Cebus capucinus [Fragaszy & Perry, 2003]. To better understand the bases of animal traditions, one should examine intrapopulation behavioral variability and the influence of social context on within-group transmission of specific foraging patterns. We studied the variability of foraging patterns acros…
Specific social influences on the acceptance of novel foods in 2–5-year-old children
Social Facilitation of Eating Familiar Food in Tufted Capuchins (Cebus apella)
Cross‐genus adoption of a marmoset ( Callithrix jacchus ) by wild capuchin monkeys ( Cebus libidinosus )
We report a case of interspecies adoption of an infant marmoset ( Callithrix jacchus ) by wild capuchin monkeys ( Cebus libidinosus ). The marmoset was an infant when it was first observed in the capuchin group on 3 March 2004. Since it first appeared it has been observed informally and frequently. In January 2005 systematic observations were made of the marmoset and a capuchin of similar age. Throughout its period of adoption the marmoset appear…
Facial Displays in Cebus apella
Response toward novel stimuli in a group of tufted capuchins ( Cebus libidinosus ) in Brasília National Park, Brazil
We investigated responses toward novel foods and novel objects by wild capuchins that routinely exploit visitors' foods in Brasília National Park. Given the capuchins' daily exposure to human foods and objects, we expected them to be more explorative toward novel foods and objects compared to capuchins that are not habituated to visitors. However, since the safety and palatability of potential foods have to be learned, we also expected the capuch…
Response to novel food and the role of social influences in common marmosets ( Callithrix jacchus ) and Goeldi's monkeys ( Callimico goeldii )
Neophobia, defined as showing caution toward novel features of the environment, is widespread in birds and mammals; it can be affected by ecology, early experience, and social context. In this study, we aimed to (i) investigate the response to novel food in adult common marmosets and Goeldi's monkeys and (ii) assess the role of social influences. We used an experimental paradigm employed previously with capuchin monkeys and children, in which a s…
Characteristics of hammer stones and anvils used by wild bearded capuchin monkeys ( Cebus libidinosus ) to crack open palm nuts
Capuchins living in Boa Vista (Piauì, Brazil) crack open hard palm nuts on hard, level surfaces (anvils) using stones (hammers) as percussive tools. This activity leaves diagnostic physical remains: distinctive shallow depressions (pits) on the surface of the anvil, cracked shells, and stone hammers on the anvil. To initiate comparison of percussive stone tool use and interpretation of the artifacts it produces across capuchins, chimpanzees, and …
Primate Behavior and Ecology (55 obras) · Biology (53 obras) · Ecology (30 obras) · Psychology (29 obras) · Animal Vocal Communication and Behavior (27 obras) · Zoology (25 obras) · Animal Behavior and Reproduction (23 obras) · Primate (17 obras) · Social Psychology (16 obras) · Animal ecology (15 obras)