Results 41 to 50 of about 26,955 (234)
Revue de Primatologie, 2020 Chimpanzees are well-known tool users, with differences reported in the tool use repertoires among communities and subspecies. Chimpanzees at most study sites exhibit some degree of stick tool use behaviour for extractive foraging, with the exception of ...
Aimee Oxley, Balinda Kiiza Jovan
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Impairment effect of infantile coloration on face discrimination in chimpanzees
Royal Society Open Science, 2021 Impaired face recognition for certain face categories, such as faces of other species or other age class faces, is known in both humans and non-human primates. A previous study found that it is more difficult for chimpanzees to differentiate infant faces
Yuri Kawaguchi +3 more
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The Anatomical Record, EarlyView.Abstract The oval window (OW) is an opening connecting the inner and middle ear. Its area has been shown to consistently scale with body mass (BM) in primates, and has been used alongside semi‐circular canal (SCC) size to differentiate Homo sapiens and fossil hominins, including Paranthropus robustus.
Ruy Fernandez, José Braga
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The Anatomical Record, EarlyView.Comparative histological and semi‐automated image analysis of primate lips: Masson's trichrome‐stained sagittal sections were segmented to quantify the connective tissue, adipose, and muscular components, enabling interspecific comparisons of labial architecture.
Liat Rotenstreich +5 more
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Sex Differences in Object Manipulation in Wild Immature Chimpanzees (Pan troglodytes schweinfurthii) and Bonobos (Pan paniscus): Preparation for Tool Use? [PDF]
PLoS ONE, 2015 Sex differences in immatures predict behavioural differences in adulthood in many mammal species. Because most studies have focused on sex differences in social interactions, little is known about possible sex differences in 'preparation' for adult life ...
Kathelijne Koops +3 more
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The Anatomical Record, EarlyView.Polarized microscopic images of the outer bone cortex (a and b) and deeper trabecular bone (c and d) of the deer calcaneus in thin cross‐sections. The brighter gray levels reflect more oblique‐to‐transverse collagen fibers in the compression/dorsal bone (a, c) and the darker gray levels reflect more longitudinal collagen in the tension/plantar bone (b,
John G. Skedros +3 more
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Chimpanzees Trust Their Friends [PDF]
Current Biology, 2016 The identification and recruitment of trustworthy partners represents an important adaptive challenge for any species that relies heavily on cooperation [1, 2]. From an evolutionary perspective, trust is difficult to account for as it involves, by definition, a risk of non-reciprocation and defection by cheaters [3, 4]. One solution for this problem is
Engelmann, J. ; https://orcid.org/0000-0001-5139-0289 +1 more
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The Anatomical Record, EarlyView.Abstract Primates show a high degree of locomotor diversity that engenders similar variance in limb bone cross‐sectional geometry and bending strength: leaping primates have stronger hindlimb bones whereas suspensory species have stronger forelimb bones.
Angela M. Mossor +7 more
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Female chimpanzees avoid inbreeding even in the presence of substantial bisexual philopatry
Royal Society Open ScienceInbreeding (reproduction between relatives) often decreases the fitness of offspring and is thus expected to lead to the evolution of inbreeding avoidance strategies.
Lauren C. White +4 more
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The Meanings of Chimpanzee Gestures [PDF]
Current Biology, 2014 Chimpanzees' use of gesture was described in the first detailed field study [1, 2], and natural use of specific gestures has been analyzed [3-5]. However, it was systematic work with captive groups that revealed compelling evidence that chimpanzees use gestures to communicate in a flexible, goal-oriented, and intentional fashion [6-8], replicated ...
Hobaiter, Cat, Byrne, Richard William
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