Wild Chimpanzees
An analysis of bimanual actions in natural feeding of semi wild chimpanzees
... The aim of the current study was to consider manual laterality during an ecologically valid behaviour in semi-wild chimpanzees. This study is in the minority of investigations that have specifically focused ...
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Pant grunts in wild chimpanzees (Pan troglodytes schweinfurthii): the vocal development of a social signal
... of chimpanzees and other great apes has hardly been studied, with vocal development being especially poorly ...single chimpanzees who were human- raised and had no contact with ...five wild ...
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Malaria parasite detection increases during pregnancy in wild chimpanzees
... pregnant chimpanzees also experience increased cortisol levels during gestation ...of wild chimpanzees, although being the only ethical option [26], will be extremely ...
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Mother-Offspring Transmission and Age-Dependent Accumulation of Simian Foamy Virus in Wild Chimpanzees
... For this study, we generated a total of 183 PCR products from 37 fecal samples obtained from 23 wild chimpanzees belonging to the same community. Because our specific objective was to better in- vestigate ...
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Wild chimpanzees inform ignorant group members of danger
... danger, wild chimpanzees pro- duce two basic types of vocal responses: loud alarm barks and ‘‘SOS’’ screams (typically given after identifying a deadly ambush threat, such as a leopard, python, or ...
5
Travel fosters tool use in wild chimpanzees
... 2016), chimpanzees were generally tolerant to each other, but it is unclear whether they learnt from each other that leaf-sponge use was a suitable solution to extract ...Nevertheless, wild ...
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Wild chimpanzees rely on cultural knowledge to solve an experimental honey acquisition task
... captive chimpanzees has addressed this criticism by showing that experimentally created traditions can be transmitted through social learning ...Kanyawara chimpanzees, who occasionally use sticks to acquire ...
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Maternal cannibalism in two populations of wild chimpanzees
... demonstrates that maternal cannibalism, although very rare, is within the behavioral repertoire of chimpanzees, and in line with reports from captive orangutans and wild bonobos (Dellatore et al. 2009; ...
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Skin temperature changes in wild chimpanzees upon hearing vocalizations of conspecifics
... in wild chimpanzees is so rich that it is difficult to assign thermal changes to a single social ...with wild animals should collect a sufficiently large number of series to be able to select the ...
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Able bodied wild chimpanzees imitate a motor procedure used by a disabled individual to overcome handicap
... whether chimpanzees are able to learn motor procedures by imitation under natural ...young chimpanzees also used this ‘liana-scratch’ technique, although they had no need ...able-bodied chimpanzees ...
7
The development of communication in alarm contexts in wild chimpanzees
... adult chimpanzees, behaviours in response to dangers involve several channels, particularly alarm calls and simultaneous gaze alternations with nearby ...in wild chimpanzees (Pan troglodytes ...
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Wild chimpanzees select tool material based on efficiency and knowledge
... Wild chimpanzees select tool material based on efficiency and knowledge.. Journal: Manuscript ID Article Type: Date Submitted by the Author: Complete List of Authors:.[r] ...
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Generation of Infectious Molecular Clones of Simian Immunodeficiency Virus from Fecal Consensus Sequences of Wild Chimpanzees
... Although the origins of the AIDS pandemic have now been determined, important questions remain concerning the cir- cumstances of the cross-species transmission events and the factors that contributed to HIV-1’s ...
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Seasonal and inter annual variation of malaria parasite detection in wild chimpanzees
... focus of several extensive studies conducted in the sub- Saharan African range of chimpanzees [1–5]. Although these studies did not aim at producing directly compara- ble prevalence estimates, the resulting ...
5
‘Adoption’ by maternal siblings in wild chimpanzees
... Our study suggests that it is the social (rather than biological) relationship that appears to play the key factor in an individual’s decision to adopt. Although there is some evidence that male chimpanzees may be ...
6
Passive acoustic monitoring reveals group ranging and territory use: a case study of wild chimpanzees (Pan troglodytes)
... The Taï Chimpanzee Project (TCP) has been running for more than 35 years where neighboring chimpanzee com- munities have been habituated to the presence of re- searchers [30]. The ARU sampling grid overlapped two ...
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Local Perceptions on Conservation of Wild Chimpanzees (Pan troglodytes verus) in the Réserve Naturelle Communautaire de Dindéfélo, Southeast of Senegal
... local perceptions; chimpanzees; conservation; natural resources; human-chimpanzees.. 44.[r] ...
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Social support reduces stress hormone levels in wild chimpanzees across stressful events and everyday affiliations
... Observation methods . A team of up to six observers followed up to three parties of chimpanzees (independently moving subgroups of flexible composition) from B7 a.m. to 5 p.m. through the forest, recording ...
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Gesture use in consortship : wild chimpanzees’ use of gesture for an ‘evolutionarily urgent’ purpose
... Female responsiveness to male gestural communication on consortship The variation in rate of success and partial success experienced by.. the two consorting males may be due to a differe[r] ...
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Development of object manipulation in wild chimpanzees
... Sex Proportions of materials used by mothers out of their total observed number of object manipulation events Conceptual null material Age Non-maternal adults mean proportions weighted b[r] ...
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