2016•Digital Commons - Andrews University (Andrews University)Requires access
P-28 The Effect of PTX in the Phonotactic Behavior of Female Cricket Gryllus Bimaculatus
Benjamin Navia, John F. Stout
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Abstract
Nanoinjection of picrotoxin (PTX) into the prothoracic ganglion of female Gryllus bimaculatus narrows and sharpens significantly the range of model calling song (CS) syllable periods (SPs) that the female responds to phonotactically. This sharpened range includes the SPs produced in the CSs of conspecific males and emphasizes the most characteristic SPs of 35 and 40 ms. Following application of either juvenile hormone III (JHIII) or PTX to the ganglion, SP-selective responses by the prothoracic AN2 auditory interneurone are also significantly sharpened to a range that parallels the range of phonotactically attractive SPs and centers on SPs of 35 and 40 ms. These results support a phonotactically significant role for CS processing in the prothoracic ganglion involving the AN2 neurone and associated circuitry.