Low survival of strongly footed pheasants may explain constraints on lateralization

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? W...

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Autores principales: Whiteside, Mark A., Bess, Mackenzie M., Frasnelli, Elisa, Beardsworth, Christine E., Langley, Ellis J. G., van Horik, Jayden O., Madden, Joah R.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6137170/
https://www.ncbi.nlm.nih.gov/pubmed/30214056
http://dx.doi.org/10.1038/s41598-018-32066-1
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author Whiteside, Mark A.
Bess, Mackenzie M.
Frasnelli, Elisa
Beardsworth, Christine E.
Langley, Ellis J. G.
van Horik, Jayden O.
Madden, Joah R.
author_facet Whiteside, Mark A.
Bess, Mackenzie M.
Frasnelli, Elisa
Beardsworth, Christine E.
Langley, Ellis J. G.
van Horik, Jayden O.
Madden, Joah R.
author_sort Whiteside, Mark A.
collection PubMed
description 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.
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spelling pubmed-61371702018-09-15 Low survival of strongly footed pheasants may explain constraints on lateralization Whiteside, Mark A. Bess, Mackenzie M. Frasnelli, Elisa Beardsworth, Christine E. Langley, Ellis J. G. van Horik, Jayden O. Madden, Joah R. Sci Rep Article 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. Nature Publishing Group UK 2018-09-13 /pmc/articles/PMC6137170/ /pubmed/30214056 http://dx.doi.org/10.1038/s41598-018-32066-1 Text en © The Author(s) 2018 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/.
spellingShingle Article
Whiteside, Mark A.
Bess, Mackenzie M.
Frasnelli, Elisa
Beardsworth, Christine E.
Langley, Ellis J. G.
van Horik, Jayden O.
Madden, Joah R.
Low survival of strongly footed pheasants may explain constraints on lateralization
title Low survival of strongly footed pheasants may explain constraints on lateralization
title_full Low survival of strongly footed pheasants may explain constraints on lateralization
title_fullStr Low survival of strongly footed pheasants may explain constraints on lateralization
title_full_unstemmed Low survival of strongly footed pheasants may explain constraints on lateralization
title_short Low survival of strongly footed pheasants may explain constraints on lateralization
title_sort low survival of strongly footed pheasants may explain constraints on lateralization
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6137170/
https://www.ncbi.nlm.nih.gov/pubmed/30214056
http://dx.doi.org/10.1038/s41598-018-32066-1
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