Presentation Details
| Does song frequency or pulse number drive phonotaxis in female G.pennsylvanicus fall field crickets? Susan N Gershman1, Troy A Bowers2. 1The Ohio State University at Marion, Marion, Ohio, USA.2The Ohio State University, Columbus, Ohio, USA |
Abstract
Field crickets are a model for behavioral isolation based on song characteristics. Because Gryllus pennsylvanicus do not share a mating season and microhabitat with other field crickets, there has not been selection for G. pennsylvanicus to modify male song or female preference to avoid interactions with heterospecifics. Velarifictorus micado now occupies the same microhabitats and mating season as G. pennsylvanicus. The songs of the two species differ in number of pulses per chirp and sound frequency, although the frequency of V. micado song is within the frequency tuning of female G. pennsylvanicus. In arena trials, most female G. pennsylvanicus are not attracted to V. micado song. To determine whether phonotaxis in female G. pennsylvanicus depends primarily on sound frequency or pulse number, we created artificial songs with V. micado frequency but G. pennsylvanicus number of pulses and songs with G. pennsylvanicus frequency but V. micado number of pulses. In no-choice trials of these two artificial songs, unaltered G. pennsylvanicus song and unaltered V. micado song, we measured female latency to approach speakers and time spent near speakers. Come see what we found!
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No part of this publication may be reproduced, distributed, or transmitted in any form or by any means, including photocopying, recording, or other electronic or mechanical methods, without the prior written permission of the author.
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