Low survival of strongly footed pheasants may explain constraints on lateralization

Whiteside, Mark A and Bess, Mackenzie M and Frasnelli, Elisa and Beardsworth, Christine E and Langley, Ellis J. G. and van Horik, Jayden O. and Madden, Joah R. (2018) Low survival of strongly footed pheasants may explain constraints on lateralization. Scientific Reports, 8 (13791). ISSN 2045-2322

Full content URL: https://doi.org/10.1038/s41598-018-32066-1

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Low survival of strongly footed pheasants may explain constraints on lateralization
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Abstract

Brain lateralization is considered adaptive because it leads to behavioral biases and specializations that bring fitness benefits. Across species, strongly lateralized individuals perform better in specific behaviors likely to improve survival. What constrains continued exaggerated lateralization? We measured survival of pheasants, finding that individuals with stronger bias in their footedness had shorter life expectancies compared to individuals with weak biases. Consequently, weak, or no footedness provided the highest fitness benefits. If, as suggested, footedness is indicative of more general brain lateralization, this could explain why continued brain lateralization is constrained even though it may improve performance in specific behaviors.

Additional Information:Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
Keywords:lateralization, fitness, survival, strength of bias, footedness
Subjects:C Biological Sciences > C100 Biology
C Biological Sciences > C180 Ecology
C Biological Sciences > C300 Zoology
Divisions:College of Science > School of Life Sciences
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ID Code:33316
Deposited On:09 Oct 2018 13:28

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