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Investigation of Acoustic Sensors to Detect

Investigation of acoustic sensors to detect the Coconut Rhinoceros Beetle. Analysis of signals from grubs and adult beetles through frequency and amplitude in various settings. Research by Mankin, Moore, Bourgeois, and Quitugua.

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Investigation of Acoustic Sensors to Detect

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  1. Investigation of Acoustic Sensors to Detect Coconut Rhinoceros Beetle in Guam Richard Mankin Aubrey Moore Robert Bourgeois Roland Quitugua

  2. Grubs in a Rearing Box Relative Amplitude 3 2 Frequency (kHz) 1 Time (s)

  3. Expanded View of Grub Signals Detected in Rearing Box Relative Amplitude 3 2 Frequency (kHz) 1 Time (s)

  4. Relative Amplitude 3 2 Frequency (Hz) 1 Periods of Stridulation by Grubs are noted at 1 (red) and 5 (blue) Time (minutes : seconds)

  5. Relative Amplitude 3 2 Frequency (Hz) 1 Expanded View of a Grub Stridulation Event Time (minutes : seconds)

  6. Relative Amplitude 3 2 Frequency (Hz) 1 Further Expansion of a Grub Stridulation Event Time (minutes : seconds)

  7. Signals Recorded from Grubs in Decaying Log near Oka Point Relative Amplitude 3 2 Frequency (Hz) 1 Stridulations Time (s)

  8. Relative Amplitude 3 2 Frequency (Hz) 1 10-s Period of Adult Beetle Sounds Recorded in Small Coconut Palm Background noise Time (s)

  9. Relative Amplitude 3 2 Frequency (Hz) 1 Adult Beetle Stridulation in Laboratory Time (s) Stridulations

  10. Relative Amplitude 3 2 Frequency (Hz) 1 Expanded View of Adult Stridulations Time (s)

  11. Relative Amplitude 3 2 Frequency (Hz) 1 Expanded View of Single Stridulation by an Adult CRB Time (s)

  12. Relative Amplitude 3 2 Frequency (Hz) 1 15-s Period of Adult CRB Activity in Small Coconut Palm Time (s)

  13. Relative Amplitude 3 2 Frequency (Hz) 1 30-s Period of Distinctive Adult CRB activity in Coconut Palm Time (s)

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