Presentation Details
| Genetics and evolution of rhythmic signals and preferences in courtship Kerry Shaw, . Cornell University, Ithaca, NY, USA |
Abstract
Mating behavior in animals is a complex, multimodal phenotype. Mating song is a common element, a consequence of rhythmic motor output, and accompanying responses and preferences to songs. Varying temporal patterns of mating songs often coincide with distinct species. These unique sexual signals can form the basis of a reproductive barrier, marking it as one of the earliest steps in speciation. Identifying genes underlying natural variation in acoustic behavior is important for understanding 1) what genes are free to change, 2) how that evolution occurs (whether through small or large steps, deleterious mutation and compensation, or redundancy and elaboration and/or novelty), and 3) how senders and receivers coevolve. In this poster, I discuss genetic studies and promising candidate genes of a relatively simple insect acoustic communication system, the calling song and acoustic preference of the Hawaiian cricket Laupala. Behavioral variation and the inferred mode of genetic evolution of song and acoustic preference are combined with recent results on the neural circuitry of cricket song and response from other systems to suggest rhythmic behavioral mechanisms of evolution.
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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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