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Percorrer por autor "Berdugo, Sophie"

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  • Automated audiovisual behavior recognition in wild primates
    Publication . Bain, Max; Nagrani, Arsha; Schofield, Daniel; Berdugo, Sophie; Bessa, Joana; Owen, Jake; Hockings, Kimberley J.; Matsuzawa, Tetsuro; Hayashi, Misato; Biro, Dora; Carvalho, Susana; Zisserman, Andrew
    The field of ethology seeks to understand animal behavior from both mechanistic and functional perspectives and to identify the various genetic, developmental, ecological, and social drivers of behavioral variation in the wild (1). It is increasingly becoming a data-rich science: Technological advances in data collection, including biologgers, camera traps, and audio recorders, now allow us to capture animal behavior in an unprecedented level of detail (2). In particular, large data archives including both audio and visual information have immense potential to measure individual- and population-level variation as well as ontogenetic and cultural changes in behavior that may span large temporal and spatial scales. However, this potential often goes untapped: The training and human effort required to process large volumes of video data continue to limit the scale and depth at which behavior can be analyzed. Automating the measurement of behavior can transform ethological research, open up large-scale video archives for detailed interrogation, and be a powerful tool to monitor and protect threatened species in the wild. With rapid advances in deep learning, the novel field of computational ethology is quickly emerging at the intersection of computer science, engineering, and biology, using computer vision algorithms to process large volumes of data (3).
    2021-11Artigo científico Acesso aberto Ver mais
  • Reliable long-term individual variation in wild chimpanzee technological efficiency
    Publication . Berdugo, Sophie; Cohen, E.; Davis, A. J.; Matsuzawa, T.; Carvalho, Susana
    Variation in the efficiency of extracting calorie-rich and nutrient-dense resources directly impacts energy expenditure and potentially has important repercussions for cultural transmission where social learning strategies are used. Assessing variation in efficiency is key to understanding the evolution of complex behavioural traits in primates. Here we examine evidence for individual-level differences beyond age- and sex-class in non-human primate extractive foraging efficiency. We used 25 years (1992–2017) of video of 21 chimpanzees aged ≥6 years in Bossou, Guinea, to longitudinally investigate individual-level differences in stone tool use efficiency. Data from 3,882 oil-palm nut-cracking bouts from >800 h of observation were collected. We found reliability in relative efficiency across four measures of nut-cracking efficiency, as well as a significant effect of age. Our findings highlight the importance of longitudinal data from long-term field sites when investigating underlying cognitive and behavioural diversity across individual lifespans and between populations.
    2024-12-23Artigo científico Acesso aberto Ver mais