Presentation Details
| Influence of habitat background motion on short-range courtship in Habronattus pyrrithrix Katelyn Wright, Eden Crawford, Abhinav Madabhushi, Tyler Ching, Ellie Jacobs, Gowthami Vidya, David Morris, Daniel Zurek, Nathan Morehouse. University of Cincinnati, Cincinnati, OH, USA |
Abstract
Animals live in noisy environments that can affect signal perception by receivers. Research in vertebrates reveals that signalers often modulate motion signals in response to background motion. However, little is known about how background motion shapes signals in invertebrates. We examined the influence of background habitat motion on Habronattus pyrrithrix jumping spiders' courtship. H. pyrrithrix has a multicomponent visual display with distinct long- and short-range phases. The short-range phase consists of tarsal and knee movements whose motion plays an important role in capturing and maintaining female attention. We thus predicted that males would increase the visual angle and/or velocity of tarsal movements in the short-range phase in response to background motion. We recorded male courtship displays to a conspecific female against two backgrounds (still habitat image, habitat video with motion). We tracked display motions in 3D and compared the kinematics of tarsal movements as perceived by the focal female in the two background conditions. Our research demonstrates the role of background motion noise in shaping displays of a charismatic invertebrate taxon.
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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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