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ARS Home » Pacific West Area » Parlier, California » San Joaquin Valley Agricultural Sciences Center » Crop Diseases, Pests and Genetics Research » Research » Publications at this Location » Publication #304192

Title: Changes in behavioral responses of Lygus lineolaris (Hemiptera: Miridae) from various applied signal voltages during EPG recordings

Author
item CERVANTES, FELIX - University Of California
item Backus, Elaine

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 5/1/2014
Publication Date: 6/22/2014
Citation: Cervantes, F., Backus, E.A. 2014. Changes in behavioral responses of Lygus lineolaris (Hemiptera: Miridae) from various applied signal voltages during EPG recordings. In: Proceedings of the Hemipteran-Plant Interactions Symposium. p.40.

Interpretive Summary:

Technical Abstract: A 3rd-generation AC-DC electrical penetration graph (EPG) monitor was used to study feeding behaviors of pre-reproductive adult Lygus lineolaris (Hemiptera: Miridae) on pinhead (<3mm) cotton squares, applying different signal voltages at several input impedances. The AC-DC monitor allows a user to select among several input impedances, as well as applied signal voltages and polarities. Recordings were performed using input impedances of 10^6 to 10^9, plus 10^13 Ohms. Within each input impedance setting, AC or DC signal voltages of 250, 150, 60 and 2 mV were applied. Both types and frequencies of waveform events were affected by applied signal, especially at voltages higher than 150 mV. This information can be used to determine the optimal monitor settings for further studies of the feeding behavior by L. lineolaris.