Preprints (not yet peer-reviewed)

58 downloads
267 views

Chimpanzees have the largest relative brain size, greatest reproductive output, and longest lifespan of any non-human ape; they also have the highest level of physical activity in the wild, as measured by daily walking and climbing distances. In this study, we...

["Anthropology","Ecology","Evolutionary Studies","Veterinary Medicine","Zoology"]
doi:10.7287/peerj.preprints.2307v1
180 downloads
304 views

How does nonhuman primate innovation compare to our own? Many primates innovate, for example to get otherwise inaccessible food or to increase their social standing, and nonhuman primate innovation can be broken into three component steps. It begins with the initial...

["Animal Behavior","Anthropology","Neuroscience","Zoology"]
doi:10.7287/peerj.preprints.2276v1
90 downloads
509 views

The phylogenetic position of many fossil platyrrhines with respect to extant ones is not yet clear. Two main hypotheses have been proposed: the layered or successive radiations hypothesis suggests that Patagonian fossils are Middle Miocene stem platyrrhines lacking...

["Anthropology","Biodiversity","Evolutionary Studies","Zoology"]
doi:10.7287/peerj.preprints.1796v2
34 downloads
197 views

Many animals, including humans and chimpanzees (Pan troglodytes), eat insects, although frequencies vary greatly between populations. Insects are traditionally either seen as desired nourishment or a fallback fare compensating a shortage of preferred foods. We...

["Animal Behavior","Anthropology","Zoology"]
doi:10.7287/peerj.preprints.1845v1
40 downloads
253 views

Chimpanzee (Pan troglodytes) termite fishing has been studied for decades. However, we still know little about how raw material for the extraction of tools is obtained. This is particularly true for potential selection criteria and what these imply for underlying...

["Animal Behavior","Anthropology","Zoology"]
doi:10.7287/peerj.preprints.1844v1
24 downloads
174 views

Pan and Ateles converge in many aspects of their social organization. Both are characterized by a high degree of fission-fusion dynamics, in which species exhibit high variation in party size, composition, and spatial cohesion. Within this framework, chimpanzees...

["Animal Behavior","Anthropology","Zoology"]
doi:10.7287/peerj.preprints.1816v1
30 downloads
231 views

Sex differences in immatures predict behavioral 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 with regards...

["Animal Behavior","Anthropology","Developmental Biology","Evolutionary Studies","Zoology"]
doi:10.7287/peerj.preprints.1815v1
62 downloads
295 views

Comparative studies in relation to language origins have mainly focused on our closest living relatives, bonobos (Pan paniscus) and chimpanzees (Pan troglodytes). Direct comparisons however are still lacking and/or concerned individuals living in captive environments...

["Animal Behavior","Anthropology","Zoology"]
doi:10.7287/peerj.preprints.1791v1
64 downloads
189 views

Sanctuaries are crucial to the survival and welfare of chimpanzees (Pan troglodytes). They also play an important role in educating the public about chimpanzee behavior and conservation. However, as many sanctuaries lack the capacity to collect long-term data,...

["Animal Behavior","Anthropology","Zoology"]
doi:10.7287/peerj.preprints.1739v1
240 downloads
214 views

Background. The shells of molluscs survive well in most sedimentary contexts and yield information about the diet of prehistoric humans. They also yield evidence of symbolic behaviours, through their use as beads for body adornments. Researchers often analyse the...

["Anthropology","Ecology","Marine Biology","Zoology"]
doi:10.7287/peerj.preprints.1710v1
198 downloads
1,042 views

A variety of reasons have been advanced to explain the loss of fur in humans and why they differ in this way from all other primates. None of these reasons has become generally accepted as the explanation for the absence of functionally effective thermally insulating...

["Anthropology","Evolutionary Studies","Zoology"]
doi:10.7287/peerj.preprints.1702v1
308 downloads
330 views

However despotic a social group may be, managing conflicts of interest is crucial to preserve group living benefits, mainly based on cooperation. In fact, in despotic groups post-conflict management via reconciliation (the first post-conflict reunion between former...

["Animal Behavior","Anthropology","Zoology"]
doi:10.7287/peerj.preprints.568v1
124 downloads
597 views

Background: Amplifiers are signals that improve the perception of underlying differences in quality. They are cost free and advantageous to high quality individuals, but disadvantageous to low quality individuals, as poor quality is easier perceived because of...

["Animal Behavior","Anthropology","Evolutionary Studies","Zoology"]
doi:10.7287/peerj.preprints.269v1
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