Mutually honest? Physiological ‘qualities' signalled by colour ornaments in monomorphic king penguins

Mate choice is expected to be important for the fitness of both sexes for species in which successful reproduction relies strongly on shared and substantial parental investment by males and females. Reciprocal selection may then favour the evolution of morphological signals providing mutual informat...

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Main Authors: Viblanc, Vincent A., Dobson, F. Stephen, Stier, Antoine, Schull, Quentin, Saraux, Claire, Gineste, Benoit, Pardonnet, Sylvia, Kauffmann, Marion, Robin, Jean-Patrice, Bize, Pierre
Language:English
Published: 2021
Subjects:
Online Access:http://doc.rero.ch/record/332558/files/BIOLINNEAN_118_2_200.pdf
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spelling ftreroch:oai:doc.rero.ch:332558 2023-05-15T17:03:55+02:00 Mutually honest? Physiological ‘qualities' signalled by colour ornaments in monomorphic king penguins Viblanc, Vincent A. Dobson, F. Stephen Stier, Antoine Schull, Quentin Saraux, Claire Gineste, Benoit Pardonnet, Sylvia Kauffmann, Marion Robin, Jean-Patrice Bize, Pierre 2021-10-05T07:26:11Z http://doc.rero.ch/record/332558/files/BIOLINNEAN_118_2_200.pdf eng eng http://doc.rero.ch/record/332558/files/BIOLINNEAN_118_2_200.pdf 2021 ftreroch 2023-02-16T17:34:19Z Mate choice is expected to be important for the fitness of both sexes for species in which successful reproduction relies strongly on shared and substantial parental investment by males and females. Reciprocal selection may then favour the evolution of morphological signals providing mutual information on the condition/quality of tentative partners. However, because males and females often have differing physiological constraints, it is unclear which proximate physiological pathways guarantee the honesty of male and female signals in similarly ornamented species. We used the monomorphic king penguin (Aptenodytes patagonicus) as a model to investigate the physiological qualities signalled by colour and morphological ornaments known to be under sexual selection (coloration of the beak spots and size of auricular feather patches). In both sexes of this slow-breeding seabird, we investigated the links between ornaments and multiple indices of individual quality; including body condition, immunity, stress and energy status. In both sexes, individual innate immunity, resting metabolic rate, and the ability to mount a stress response in answer to an acute disturbance (capture) were similarly signalled by various aspects of beak coloration or auricular patch size. However, we also reveal interesting and contrasting relationships between males and females in how ornaments may signal individual quality. Body condition and oxidative stress status were signalled by beak coloration, although in opposite directions for the sexes. Over an exhaustive set of physiological variables, several suggestive patterns indicated the conveyance of honest information about mate quality in this monomorphic species. However, sex-specific patterns suggested that monomorphic ornaments may signal different information concerning body mass and oxidative balance of males and females, at least in king penguins. Other/Unknown Material King Penguins RERO DOC Digital Library The Beak ENVELOPE(-130.771,-130.771,56.466,56.466)
institution Open Polar
collection RERO DOC Digital Library
op_collection_id ftreroch
language English
description Mate choice is expected to be important for the fitness of both sexes for species in which successful reproduction relies strongly on shared and substantial parental investment by males and females. Reciprocal selection may then favour the evolution of morphological signals providing mutual information on the condition/quality of tentative partners. However, because males and females often have differing physiological constraints, it is unclear which proximate physiological pathways guarantee the honesty of male and female signals in similarly ornamented species. We used the monomorphic king penguin (Aptenodytes patagonicus) as a model to investigate the physiological qualities signalled by colour and morphological ornaments known to be under sexual selection (coloration of the beak spots and size of auricular feather patches). In both sexes of this slow-breeding seabird, we investigated the links between ornaments and multiple indices of individual quality; including body condition, immunity, stress and energy status. In both sexes, individual innate immunity, resting metabolic rate, and the ability to mount a stress response in answer to an acute disturbance (capture) were similarly signalled by various aspects of beak coloration or auricular patch size. However, we also reveal interesting and contrasting relationships between males and females in how ornaments may signal individual quality. Body condition and oxidative stress status were signalled by beak coloration, although in opposite directions for the sexes. Over an exhaustive set of physiological variables, several suggestive patterns indicated the conveyance of honest information about mate quality in this monomorphic species. However, sex-specific patterns suggested that monomorphic ornaments may signal different information concerning body mass and oxidative balance of males and females, at least in king penguins.
author Viblanc, Vincent A.
Dobson, F. Stephen
Stier, Antoine
Schull, Quentin
Saraux, Claire
Gineste, Benoit
Pardonnet, Sylvia
Kauffmann, Marion
Robin, Jean-Patrice
Bize, Pierre
spellingShingle Viblanc, Vincent A.
Dobson, F. Stephen
Stier, Antoine
Schull, Quentin
Saraux, Claire
Gineste, Benoit
Pardonnet, Sylvia
Kauffmann, Marion
Robin, Jean-Patrice
Bize, Pierre
Mutually honest? Physiological ‘qualities' signalled by colour ornaments in monomorphic king penguins
author_facet Viblanc, Vincent A.
Dobson, F. Stephen
Stier, Antoine
Schull, Quentin
Saraux, Claire
Gineste, Benoit
Pardonnet, Sylvia
Kauffmann, Marion
Robin, Jean-Patrice
Bize, Pierre
author_sort Viblanc, Vincent A.
title Mutually honest? Physiological ‘qualities' signalled by colour ornaments in monomorphic king penguins
title_short Mutually honest? Physiological ‘qualities' signalled by colour ornaments in monomorphic king penguins
title_full Mutually honest? Physiological ‘qualities' signalled by colour ornaments in monomorphic king penguins
title_fullStr Mutually honest? Physiological ‘qualities' signalled by colour ornaments in monomorphic king penguins
title_full_unstemmed Mutually honest? Physiological ‘qualities' signalled by colour ornaments in monomorphic king penguins
title_sort mutually honest? physiological ‘qualities' signalled by colour ornaments in monomorphic king penguins
publishDate 2021
url http://doc.rero.ch/record/332558/files/BIOLINNEAN_118_2_200.pdf
long_lat ENVELOPE(-130.771,-130.771,56.466,56.466)
geographic The Beak
geographic_facet The Beak
genre King Penguins
genre_facet King Penguins
op_relation http://doc.rero.ch/record/332558/files/BIOLINNEAN_118_2_200.pdf
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