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Colour and pattern change against visually heterogeneous backgrounds in the tree frog Hyla japonica
Colour change in animals can be adaptive phenotypic plasticity in heterogeneous environments. Camouflage through background colour matching has been considered a primary force that drives the evolution of colour changing ability. However, the mechanism to which animals change their colour and patter...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4773871/ https://www.ncbi.nlm.nih.gov/pubmed/26932675 http://dx.doi.org/10.1038/srep22601 |
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author | Kang, Changku Kim, Ye Eun Jang, Yikweon |
author_facet | Kang, Changku Kim, Ye Eun Jang, Yikweon |
author_sort | Kang, Changku |
collection | PubMed |
description | Colour change in animals can be adaptive phenotypic plasticity in heterogeneous environments. Camouflage through background colour matching has been considered a primary force that drives the evolution of colour changing ability. However, the mechanism to which animals change their colour and patterns under visually heterogeneous backgrounds (i.e. consisting of more than one colour) has only been identified in limited taxa. Here, we investigated the colour change process of the Japanese tree frog (Hyla japonica) against patterned backgrounds and elucidated how the expression of dorsal patterns changes against various achromatic/chromatic backgrounds with/without patterns. Our main findings are i) frogs primarily responded to the achromatic differences in background, ii) their contrasting dorsal patterns were conditionally expressed dependent on the brightness of backgrounds, iii) against mixed coloured background, frogs adopted intermediate forms between two colours. Using predator (avian and snake) vision models, we determined that colour differences against different backgrounds yielded perceptible changes in dorsal colours. We also found substantial individual variation in colour changing ability and the levels of dorsal pattern expression between individuals. We discuss the possibility of correlational selection on colour changing ability and resting behaviour that maintains the high variation in colour changing ability within population. |
format | Online Article Text |
id | pubmed-4773871 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-47738712016-03-09 Colour and pattern change against visually heterogeneous backgrounds in the tree frog Hyla japonica Kang, Changku Kim, Ye Eun Jang, Yikweon Sci Rep Article Colour change in animals can be adaptive phenotypic plasticity in heterogeneous environments. Camouflage through background colour matching has been considered a primary force that drives the evolution of colour changing ability. However, the mechanism to which animals change their colour and patterns under visually heterogeneous backgrounds (i.e. consisting of more than one colour) has only been identified in limited taxa. Here, we investigated the colour change process of the Japanese tree frog (Hyla japonica) against patterned backgrounds and elucidated how the expression of dorsal patterns changes against various achromatic/chromatic backgrounds with/without patterns. Our main findings are i) frogs primarily responded to the achromatic differences in background, ii) their contrasting dorsal patterns were conditionally expressed dependent on the brightness of backgrounds, iii) against mixed coloured background, frogs adopted intermediate forms between two colours. Using predator (avian and snake) vision models, we determined that colour differences against different backgrounds yielded perceptible changes in dorsal colours. We also found substantial individual variation in colour changing ability and the levels of dorsal pattern expression between individuals. We discuss the possibility of correlational selection on colour changing ability and resting behaviour that maintains the high variation in colour changing ability within population. Nature Publishing Group 2016-03-02 /pmc/articles/PMC4773871/ /pubmed/26932675 http://dx.doi.org/10.1038/srep22601 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Kang, Changku Kim, Ye Eun Jang, Yikweon Colour and pattern change against visually heterogeneous backgrounds in the tree frog Hyla japonica |
title | Colour and pattern change against visually heterogeneous backgrounds in the tree frog Hyla japonica |
title_full | Colour and pattern change against visually heterogeneous backgrounds in the tree frog Hyla japonica |
title_fullStr | Colour and pattern change against visually heterogeneous backgrounds in the tree frog Hyla japonica |
title_full_unstemmed | Colour and pattern change against visually heterogeneous backgrounds in the tree frog Hyla japonica |
title_short | Colour and pattern change against visually heterogeneous backgrounds in the tree frog Hyla japonica |
title_sort | colour and pattern change against visually heterogeneous backgrounds in the tree frog hyla japonica |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4773871/ https://www.ncbi.nlm.nih.gov/pubmed/26932675 http://dx.doi.org/10.1038/srep22601 |
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