Presentation Details
| Tarantulas Can Use Black and White Cues in a Discrimination Learning Task Jordan E Kolinski, Becky L Hansis-O'Neill, Aimee S Dunlap. University of Missouri-St.Louis, St.Louis, Missouri, USA |
Abstract
Tarantulas can be colorful and have genes associated with color vision. However, there are no studies on color vision in this taxon. The purpose of this experiment was to pilot a new protocol for visual discrimination learning in Mexican red-knee tarantulas (Brachypelma hamorii) that could accommodate colors cues. We wanted to know if tarantulas could use visual cues to move away from a noxious stimulus - vibration. The test used a choice chamber with doors marked with black or white paper. Entering the correct door stopped the vibration. We quantified learning by measuring how many trials it took before the tarantulas could consistently pick the correct color on their first try. We found that the tarantulas learned the correct choice after 12-15 trials. Therefore, tarantulas can likely use black and white as discriminatory stimuli, but we are not sure if they can see chromatic colors. Future research will focus on testing discrimination learning using different colors. This new protocol will help us confirm which, if any, colors tarantulas can see. This research will help scientists better understand the evolution of colors in tarantulas and how it affects their life histories.
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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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