Presentation Details
| The role of parental care in the development of mating biases for aposematic color in Ranitomeya poison frogs Olivia S Feagles, Yusan Yang. University of South Florida, Tampa, FL, USA |
Abstract
Sexual biases in conspecific interactions fuel the evolution of divergent phenotypes, with sexual imprinting potentially shaping these biases. This has evolutionary implications, for example, assortative mating for color in poison frogs. We characterize color-mediated behaviors in Ranitomeya poison frogs and consider parental care differences (R. imitator: egg guarding and extended biparental care; R. variabilis: egg guarding only). We investigate if divergent color is a mating signal, and if sexual imprinting is a source of divergence. Tadpoles are reared in treatments manipulating exposure to parent color: (1) biological: parents of the same color; (2) cross-fostered: parents of a different color; (3) isolated: hand-reared; (4) cross-bred: biological parents of two colors). At maturity, offspring are assayed for color biases in mate choice and intrasexual competition. We predict R. imitator to sexually imprint, but not R. variabilis. We also predict that R. imitator offspring show color bias for the parent with more interaction. This expands upon sexual imprinting research as the second amphibian study and lends insight into behavioral origins of evolutionary patterns of color.
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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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