Supplementary material S10: Video analysis of Varroa jolting pulses on brood-comb.

<p>Video showing the accelerometer data in spectrogram format and synchronous displacements of the <em>Varroa</em> individual on brood-comb. The processing for all panels in this video has been completed in the same way as for S9 and S11, with the video slowed to four times for ease of viewing. The lowest point of acceleration magnitude is here forced to be 1/60^th of the maximum As the mite jolting pulses are more spread out over time on this substrate and the vibrational pulse is inherently of a lower frequency, the frame rate did not need to be slowed as much as it did for S9. The soundtrack has also been slowed accordingly and still reveals an audible jolting pulse in some instances, this time as a &lsquo;knocking&rsquo; noise. Several jolting instances are included in this video from different points in time to showcase occurrences where the jolt produces a measurable vibrational trace. Although this mite jolted frequently throughout the video, detectable instances of vibration occurred at more irregular intervals. Here too, the synchronicity between mite movement and accelerometer trace can be clearly viewed. Overall, this video amounts to approximately 38 seconds of real-time data.</p> <p>&nbsp;</p>