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• W2922272043 abstract "Abstract Although methods for tracking animals underwater exist, they frequently involve costly infrastructure investment, or capture and manipulation of animals to affix or implant tags. These practical concerns limit the taxonomic coverage of aquatic movement ecology studies and implementation in areas where high infrastructure investment is impossible. Here we present a method based on deep-learning and structure-from-motion, with which we can accurately determine the 3D location of animals, the structure of the environment in which they are moving. Further behavioural decomposition of the body position and contour of animals subsequently allow quantifying the behavioural states of each interacting animal. This approach can be used with minimal infrastructure and without confining animals to to a fixed area, or capturing and interfering with them in any way. With this approach, we are able to track single individuals (Conger Eel, Conger oceanus ), small heterospecific groups ( Mullus surmuletus, Diplodus sp .), and schools of animals (Tanganyikan cichlids Lamprologus callipterus ) in freshwater and marine systems, and in habitats ranging in environmental complexity. Positional information was highly accurate, with errors as low as 1.67% of body length. Tracking data was embedded in 3D environmental models that could be used to examine collective decision making, obstacle avoidance, and visual connectivity of groups. By analyzing body contour and position, we were also able to use unsupervised classification to quantify the kinematic behavioural states of each animal. The proposed framework allows us to understand animal behaviour in aquatic systems at an unprecedented resolution and a fraction of the cost of established methodologies, with minimal domain expertise at the data acquisition or analysis phase required. Implementing this method, research can be conducted in a wide range of field contexts to collect laboratory standard data, vastly expanding both the taxonomic and environmental coverage of quantitative animal movement analysis with a low-cost, open-source solution." @default.
• W2922272043 created "2019-03-22" @default.
• W2922272043 creator A5020531685 @default.
• W2922272043 creator A5034529024 @default.
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• W2922272043 date "2019-03-09" @default.
• W2922272043 modified "2023-09-25" @default.
• W2922272043 title "A low-cost, open-source framework for tracking and behavioural analysis of animals in aquatic ecosystems" @default.
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• W2922272043 doi "https://doi.org/10.1101/571232" @default.
• W2922272043 hasPublicationYear "2019" @default.
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