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Authors
Martínez-Íñigo, Laura https://orcid.org/0000-0002-2880-1163
Baas, Pauline
Klein, Harmonie https://orcid.org/0000-0003-1925-5049
Pika, Simone https://orcid.org/0000-0002-4398-2337
Deschner, Tobias https://orcid.org/0000-0002-9873-316X
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Funding
Funding for this research was provided by:
Max-Planck-Institut für Evolutionäre Anthropologie
H2020 European Research Council (772000)
Max Planck Institute for Evolutionary Anthropology
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Article History
Received: 25 October 2020
Accepted: 28 May 2021
First Online: 17 June 2021
Declarations
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: The authors declare that they have no conflicts of interest.
: Our study was purely observational and noninvasive. Researchers followed a strict hygiene protocol (Gilardi et al.). Researchers quarantine for five days before following the chimpanzees. In addition, researchers disinfect their hands before entering the forest, wear face masks, and keep a minimum distance of eight meters between themselves and the chimpanzees to avoid disease transmission from humans to chimpanzees and not disturb the natural behavior of the observed individuals. Research protocols adhered to the legal requirements of Gabon and followed the recommendations of the Animals (Scientific Procedures) Act 1986, as published by the government of the United Kingdom. The research also followed the principles of ethical treatment of non-human primates, as stated by the American Society of Primatologists. The Agence Nationale des Parcs Nationaux, and the Centre National de la Recherche Scientifique et Technique of Gabon, Libreville, Gabon, granted permission to carry out research at the Loango National Park.
