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Color variation in signal crayfish Pacifastacus leniusculus

External coloration in animals depends on the interaction of several different factors including the genetics and epigenetics processes that underlie the color expression, the mechanisms of color perception, and the general mechanisms controlling color evolution and function. Among all, camouflages...

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Autores principales: Sacchi, Roberto, Cancian, Stefania, Ghia, Daniela, Fea, Gianluca, Coladonato, Alan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7901764/
https://www.ncbi.nlm.nih.gov/pubmed/33654488
http://dx.doi.org/10.1093/cz/zoaa031
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author Sacchi, Roberto
Cancian, Stefania
Ghia, Daniela
Fea, Gianluca
Coladonato, Alan
author_facet Sacchi, Roberto
Cancian, Stefania
Ghia, Daniela
Fea, Gianluca
Coladonato, Alan
author_sort Sacchi, Roberto
collection PubMed
description External coloration in animals depends on the interaction of several different factors including the genetics and epigenetics processes that underlie the color expression, the mechanisms of color perception, and the general mechanisms controlling color evolution and function. Among all, camouflages from predators and conspicuousness are of particular interest because pose animal to choose between opposite adjustment in coloration. The external coloration of crustaceans is mainly due to the accumulation of carotenoids in the exoskeleton and the epidermal layer, and the trade-off between camouflage and communication had led to a variety of responses, involving signal partitioning, spectral sensibility, changing coloration, or signaling behavior. Here, we used digital images to explore intrapopulation variability of the external coloration of Pacifastacus leniusculus among body regions within an individual and between sexes. We found that 1) ventral coloration of claws are more saturated and brilliant than upper parts, 2) males express a more saturated and brightness coloration than females, especially on the lower portion of claws, 3) color intensity and brightness increases with size differently in different body regions, and 4) brightness is more variable in males than in females. All the above patterns support the hypothesis that color in this species could be the result of a compromise between camouflage from predators and conspicuousness for communication. The results of this study suggest that carotenoid might have something to do with intraspecific communication and perform more complex functions than that of a simple pigment.
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spelling pubmed-79017642021-03-01 Color variation in signal crayfish Pacifastacus leniusculus Sacchi, Roberto Cancian, Stefania Ghia, Daniela Fea, Gianluca Coladonato, Alan Curr Zool Articles External coloration in animals depends on the interaction of several different factors including the genetics and epigenetics processes that underlie the color expression, the mechanisms of color perception, and the general mechanisms controlling color evolution and function. Among all, camouflages from predators and conspicuousness are of particular interest because pose animal to choose between opposite adjustment in coloration. The external coloration of crustaceans is mainly due to the accumulation of carotenoids in the exoskeleton and the epidermal layer, and the trade-off between camouflage and communication had led to a variety of responses, involving signal partitioning, spectral sensibility, changing coloration, or signaling behavior. Here, we used digital images to explore intrapopulation variability of the external coloration of Pacifastacus leniusculus among body regions within an individual and between sexes. We found that 1) ventral coloration of claws are more saturated and brilliant than upper parts, 2) males express a more saturated and brightness coloration than females, especially on the lower portion of claws, 3) color intensity and brightness increases with size differently in different body regions, and 4) brightness is more variable in males than in females. All the above patterns support the hypothesis that color in this species could be the result of a compromise between camouflage from predators and conspicuousness for communication. The results of this study suggest that carotenoid might have something to do with intraspecific communication and perform more complex functions than that of a simple pigment. Oxford University Press 2021-02 2020-06-30 /pmc/articles/PMC7901764/ /pubmed/33654488 http://dx.doi.org/10.1093/cz/zoaa031 Text en © The Author(s) (2020). Published by Oxford University Press on behalf of Editorial Office, Current Zoology. http://creativecommons.org/licenses/by-nc/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com
spellingShingle Articles
Sacchi, Roberto
Cancian, Stefania
Ghia, Daniela
Fea, Gianluca
Coladonato, Alan
Color variation in signal crayfish Pacifastacus leniusculus
title Color variation in signal crayfish Pacifastacus leniusculus
title_full Color variation in signal crayfish Pacifastacus leniusculus
title_fullStr Color variation in signal crayfish Pacifastacus leniusculus
title_full_unstemmed Color variation in signal crayfish Pacifastacus leniusculus
title_short Color variation in signal crayfish Pacifastacus leniusculus
title_sort color variation in signal crayfish pacifastacus leniusculus
topic Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7901764/
https://www.ncbi.nlm.nih.gov/pubmed/33654488
http://dx.doi.org/10.1093/cz/zoaa031
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