Design of a candidate vibrational signal for mating disruption against the glassy-winged sharpshooter, Homalodisca vitripennis

Text - scientific article/review article


BACKGROUNDThe glassy-winged sharpshooter (GWSS), Homalodisca vitripennis, is an important pest of grapevines due to its ability to transmit Xylella fastidiosa, the causal agent of Pierce's disease. GWSS mating communication is based on vibrational signals; therefore, vibrational mating disruption could be an alternative to insecticides for suppression of the GWSS population. Our objectives were to identify spectral features of the female signal that elicit male signaling, design disruptive signals able to alter male perception and acceptance of a female, and determine the signal intensity required for future field applications. RESULTSMale responses to playback of modified female signals were significantly reduced by 60-75% when part of the female signal spectral components above or below 400Hz were deleted. Playback bioassays showed that transmission of an 80Hz pure frequency tone to plants completely suppressed male signaling to female signal playback, even if the disruptive signal amplitude was 10dB lower than the female signal playback. CONCLUSIONAlthough the mechanism underlying cessation of male signaling activity in the presence of disruption is not yet understood, results suggest that an 80Hz vibrational signal should be tested in laboratory and field experiments to assess its efficacy in disrupting mating of GWSS. (c) 2017 Society of Chemical Industry


no licence specified -


  • Xylella fastidiosa