Use of a gyroscope/accelerometer data logger to identify alternative feeding behaviours in fish.

نویسندگان

  • Yuuki Kawabata
  • Takuji Noda
  • Yuuki Nakashima
  • Atsushi Nanami
  • Taku Sato
  • Takayuki Takebe
  • Hiromichi Mitamura
  • Nobuaki Arai
  • Tomofumi Yamaguchi
  • Kiyoshi Soyano
چکیده

We examined whether we could identify the feeding behaviours of the trophic generalist fish Epinephelus ongus on different prey types (crabs and fish) using a data logger that incorporated a three-axis gyroscope and a three-axis accelerometer. Feeding behaviours and other burst behaviours, including escape responses, intraspecific interactions and routine movements, were recorded from six E. ongus individuals using data loggers sampling at 200 Hz, and were validated by simultaneously recorded video images. For each data-logger record, we extracted 5 s of data when any of the three-axis accelerations exceeded absolute 2.0 g, to capture all feeding behaviours and other burst behaviours. Each feeding behaviour was then identified using a combination of parameters that were derived from the extracted data. Using decision trees with the parameters, high true identification rates (87.5% for both feeding behaviours) with low false identification rates (5% for crab-eating and 6.3% for fish-eating) were achieved for both feeding behaviours.

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عنوان ژورنال:
  • The Journal of experimental biology

دوره 217 Pt 18  شماره 

صفحات  -

تاریخ انتشار 2014