Male-biased stone tool use by wild white-faced capuchins (Cebus capucinus imitator) DOI Creative Commons
Zoë Goldsborough, Margaret C. Crofoot, Brendan J. Barrett

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: Sept. 5, 2023

Abstract Tool-using primates often show sex differences in both the frequency and efficiency of tool use. In species with sex-biased dispersal, such within-group variation likely shapes patterns cultural transmission tool-use traditions between groups. On Panamanian islands Jicarón Coiba, a population white-faced capuchins ( Cebus capucinus imitator) —some which engage habitual stone use—provide an opportunity to test hypotheses about why sex-biases arise. Jicarón, we have only observed males engaging use, whereas on sexes are known use tools. Using 5 years camera trap data, that this reflects true difference rather than sampling artefact, then factors driving pattern. Differences physical ability or risk-aversion, competition over access anvils do not account for sex-differences observe. Our data females physically capable use: Coiba juveniles as small smaller adult regularly Females also ample tools: equally terrestrial, is low. Finally, rarely scrounge left-over food items either during after tool-using events, suggesting they being provisioned by males. Although it remains unclear capuchin stone-tools, our results illustrate biases socially learned behaviors can arise even absence obvious physical, environmental social constraints. This suggests much more nuanced understanding structure, diet dispersal needed explain some populations but others.

Language: Английский

Nest construction in mammals: a review of the patterns of construction and functional roles DOI Open Access
D. Charles Deeming

Philosophical Transactions of the Royal Society B Biological Sciences, Journal Year: 2023, Volume and Issue: 378(1884)

Published: July 10, 2023

Nesting behaviour in mammals has been investigated a wide variety of species but to date there not any scholarly review the incidence and roles these nests. Not all build nests but, while some large regularly nests, nest-building is more commonly associated with small weighing less than kilogram. Quantitative data for amounts different materials used nest are rarely reported mammal typically constructed from fresh (rather dead) plant materials. Animal-derived seem be rare anthropogenic reported. Few studies have examined play physically robust provide support structure. Many maternity roles, other were recognized. A range mammalian orders use resting environmental protection. Less common as sites torpor or hibernation, refuge predation, may anti-parasite properties. These often mutually exclusive. It hoped that this will stimulate interest functional properties also suggests various themes would interesting areas future research. This article part theme issue ‘The evolutionary ecology nests: cross-taxon approach’.

Language: Английский

Citations

14
Chimpanzees (Pan troglodytes) in savanna landscapes DOI Creative Commons
Stacy Lindshield, R. Adriana Hernández‐Aguilar, Amanda H. Korstjens

et al.

Evolutionary Anthropology Issues News and Reviews, Journal Year: 2021, Volume and Issue: 30(6), P. 399 - 420

Published: Sept. 20, 2021

Abstract Chimpanzees ( Pan troglodytes ) are the only great apes that inhabit hot, dry, and open savannas. We review environmental pressures of savannas on chimpanzees, such as food water scarcity, evidence for chimpanzees' behavioral responses to these landscapes. In our analysis, were generally associated with low chimpanzee population densities large home ranges. addition, thermoregulatory behaviors likely reduce hyperthermia risk, cave use, frequently observed in hottest driest savanna hypothesize a “savanna landscape effect” chimpanzees offer pathways future research understand its evolutionary processes mechanisms. conclude by discussing significance modeling evolution early hominin traits informing conservation programs endangered apes.

Language: Английский

Citations

28
Male‐biased stone tool use by wild white‐faced capuchins (Cebus capucinus imitator) DOI Creative Commons
Zoë Goldsborough, Margaret C. Crofoot, Brendan J. Barrett

et al.

American Journal of Primatology, Journal Year: 2024, Volume and Issue: 86(4)

Published: Jan. 9, 2024

Abstract Tool‐using primates often show sex differences in both the frequency and efficiency of tool use. In species with sex‐biased dispersal, such within‐group variation likely shapes patterns cultural transmission tool‐use traditions between groups. On Panamanian islands Jicarón Coiba, a population white‐faced capuchins ( Cebus capucinus imitator )—some which engage habitual stone use—provide an opportunity to test hypotheses about why sex‐biases arise. Jicarón, we have only observed males engaging use, whereas on sexes are known use tools. Using 5 years camera trap data, provide evidence that this reflects difference rather than sampling artifact, then factors driving pattern. Differences physical ability or risk‐aversion, competition over access anvils do not account for sex‐differences observe. Our data adult females physically capable use: Coiba juveniles smaller regularly Females also ample tools: equally terrestrial, is low. Finally, rarely scrounge left‐over food items either during after tool‐using events, suggesting they being provisioned by males. Although it remains unclear capuchin stone‐tools, our results illustrate biases socially learned behaviors can arise even absence obvious physical, environmental, social constraints. This suggests much more nuanced understanding structure, diet, dispersal needed explain some populations but others.

Language: Английский

Citations

3
Developmental and Sex‐Based Variation in Nest Building Among Wild Immature Chimpanzees DOI Creative Commons
Tara Khayer,

Kelly J. Desruelle,

Cassandra Curteanu

et al.

American Journal of Primatology, Journal Year: 2025, Volume and Issue: 87(3)

Published: Feb. 28, 2025

ABSTRACT All great apes build nests. Nests in trees or on the ground provide with a safe and comfortable place to sleep rest at night during day. Nest building is necessary skill form of tool use that individuals learn practice early life, but little known about its development factors affecting expression nest infancy. We studied daytime 72 wild immature chimpanzees ( Pan troglodytes schweinfurthii ) Ngogo, Kibale National Park, Uganda. evaluated effects age, sex, maternal parity likelihood infant (presence absence), as well rates (frequency/hour) durations (time from start finish each nest) which infants built Compared youngest (≤ 1 year), older were more likely nests, them higher rates, consistent hypotheses requires learning infancy threshold physical manipulate tree branches. Female nests often than male infants, corroborating other developmental markers suggesting females attain functional independence younger ages males some chimpanzee populations. Among who seen least once, similar, regardless parity, indicated there was interindividual variation once started practicing. The observed patterns prior subsequent behaviors suggested > 4 years old functionally, for resting, infants. This study underscores value measure apes. Studying affect allows better understanding ontogeny evolution hominids.

Language: Английский

Citations

0
Primate archaeology 3.0 DOI Creative Commons
Alejandra Pascual‐Garrido, Susana Carvalho, Katarina Almeida‐Warren

et al.

American Journal of Physical Anthropology, Journal Year: 2023, Volume and Issue: 183(3)

Published: Sept. 6, 2023

The new field of primate archaeology investigates the technological behavior and material record nonhuman primates, providing valuable comparative data on our understanding human evolution. Yet, paralleling hominin archaeology, is largely biased toward analysis lithic artifacts. While have been gained through an examination extant tool use its archaeological record, focusing this one single aspect provides limited insights. It therefore necessary to explore what extent other non-technological activities, such as non-tool aided feeding, traveling, social behaviors or ritual displays, leave traces that could be detected in record. Here we propose four areas investigation which believe overlooked by are crucial uncovering full potential behavioral repertoire, including own: (1) Plant technology; (2) Archaeology beyond (3) Landscape archaeology; (4) Primate cultural heritage. We discuss each theme context latest developments challenges, well future directions. Developing a more "inclusive" will not only benefit study evolution own right but aid conservation efforts increasing changes primate-environment interactions over time.

Language: Английский

Citations

8
Chimpanzees (Pan troglodytes) in U.S. Zoos, Sanctuaries, and Research Facilities: A Survey-Based Comparison of Species-Typical Behaviors DOI Creative Commons
Andrea W. Clay, Stephen R. Ross, Susan P. Lambeth

et al.

Animals, Journal Year: 2023, Volume and Issue: 13(2), P. 251 - 251

Published: Jan. 10, 2023

A survey was sent to zoos, research facilities, and sanctuaries which housed chimpanzees. Data collected included information about 1122 chimpanzees’ age, sex, social group-size, rearing history, enclosure. Respondents were also asked indicate if certain behaviors had been observed in each chimpanzee over the prior two years. Species- typical (STBs) queried, including copulation, tool-use, nest-building, grooming. Tool-use reported present for 94.3% of sample (n = 982), active grooming 85.7% 1121), copulation 68.3% 863) nest-building 58.9% 982). Of subjects whom we data regarding all four STBs 860), 45.6% engage four. Logistic regression analyses using forward Wald criteria conducted determine best model STB based on predictors facility-type, a sex-by-rearing interaction. The (χ2(6) 124.62, p < 0.001) rearing, Chimpanzees more likely copulate they mother-reared, larger groups, living and, not mother-reared (NOTMR), female. tool-use retained age category, (χ2(5) 55.78, 0.001). use tools adult, NOTMR, facility-type (χ2(3) 205.71, build nests MR zoos or sanctuaries. type facility 102.15, immature, female, zoos. This provides basic behavioral profile many chimpanzees under human care United States allows us potential methods improving welfare these future this population.

Language: Английский

Citations

6
Introduction to the Special Issue on Savanna Chimpanzees DOI Open Access

Linda F. Marchant,

Erin G. Wessling, Stacy Lindshield

et al.

International Journal of Primatology, Journal Year: 2020, Volume and Issue: 41(6), P. 767 - 774

Published: Nov. 23, 2020

Language: Английский

Citations

4
Sheltering Chimpanzees DOI Open Access
William C. McGrew

Primates, Journal Year: 2021, Volume and Issue: 62(3), P. 445 - 455

Published: April 9, 2021

Citations

3
Chimpanzees (Pan troglodytes) adapt their nesting behavior after large‐scale forest clearance and community decline DOI
Kim van Dijk, Marie Cibot, Matthew R. McLennan

et al.

American Journal of Primatology, Journal Year: 2021, Volume and Issue: 83(10)

Published: Aug. 29, 2021

Abstract Chimpanzees ( Pan troglodytes ) build nests at night for sleeping and occasionally during daytime resting. Over the course of seven years, forest fragments in Bulindi, Uganda, were reduced size by about 80% when landowners converted to agricultural land. However, unlike other studies on nesting behavior response habitat disturbance, chimpanzees Bulindi had no opportunity retreat into nearby undisturbed forest. To understand behavioral adaptations clearance, we compared chimpanzees' characteristics before after this period major deforestation. After deforestation, built lower heights shorter trees, reused a larger proportion their nests. Additionally, average nest group increased even though community declined approximately 20% over same period. The substantial decrease available may have caused aggregate nesting. more cohesive also been influenced dietary shifts (increased reliance crops) need enhanced safety with human encroachment. Conversely, selected similar tree species apparently reflecting strong preference particular species, nested less often exotic integrated (constructed using multiple trees) frequency as fragment clearance. living unprotected face mounting anthropogenic pressures that threaten survival. Nevertheless, our study shows can adjust flexibly rapid, extensive change. While flexibility enable them cope least certain point, long‐term survival fast‐changing human‐modified landscapes requires intensive conservation efforts.

Language: Английский

Citations

2
Male-biased stone tool use by wild white-faced capuchins (Cebus capucinus imitator) DOI Creative Commons
Zoë Goldsborough, Margaret C. Crofoot, Brendan J. Barrett

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: Sept. 5, 2023

Abstract Tool-using primates often show sex differences in both the frequency and efficiency of tool use. In species with sex-biased dispersal, such within-group variation likely shapes patterns cultural transmission tool-use traditions between groups. On Panamanian islands Jicarón Coiba, a population white-faced capuchins ( Cebus capucinus imitator) —some which engage habitual stone use—provide an opportunity to test hypotheses about why sex-biases arise. Jicarón, we have only observed males engaging use, whereas on sexes are known use tools. Using 5 years camera trap data, that this reflects true difference rather than sampling artefact, then factors driving pattern. Differences physical ability or risk-aversion, competition over access anvils do not account for sex-differences observe. Our data females physically capable use: Coiba juveniles as small smaller adult regularly Females also ample tools: equally terrestrial, is low. Finally, rarely scrounge left-over food items either during after tool-using events, suggesting they being provisioned by males. Although it remains unclear capuchin stone-tools, our results illustrate biases socially learned behaviors can arise even absence obvious physical, environmental social constraints. This suggests much more nuanced understanding structure, diet dispersal needed explain some populations but others.

Language: Английский

Citations

0