Wild common crossbills produce redder feathers when experimentally forced to increase flying effort
Este congreso tuvo lugar en Estocolmo (Suecia) del 28 de julio al 2 de agosto. The animal signaling theory posits that conspicuous colorations exhibited by many animals have evolved as reliable signals of individual quality. Red carotenoid-based ornaments may depend on enzymatic transformations (oxi...
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International Society for Behavioral Ecology
2022
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ftcsic:oai:digital.csic.es:10261/283358 2024-02-11T10:02:16+01:00 Wild common crossbills produce redder feathers when experimentally forced to increase flying effort Cantarero, Alejandro Fernández-Eslava, Blanca Alonso, Daniel Alonso-Álvarez, Carlos 2022-07-28 http://hdl.handle.net/10261/283358 unknown International Society for Behavioral Ecology Sí International Society for Bahavioral Ecology Congress (2022) http://hdl.handle.net/10261/283358 none actas de congreso 2022 ftcsic 2024-01-16T11:31:08Z Este congreso tuvo lugar en Estocolmo (Suecia) del 28 de julio al 2 de agosto. The animal signaling theory posits that conspicuous colorations exhibited by many animals have evolved as reliable signals of individual quality. Red carotenoid-based ornaments may depend on enzymatic transformations (oxidation) of dietary yellow carotenoids, which could occur in the inner mitochondrial membrane (IMM). Thus, carotenoid ketolation and cell respiration could share the same biochemical pathways. Accordingly, the level of trait expression (redness) would directly reveal the efficiency of individuals¿ metabolism and, hence, the bearer quality in an unfalsifiable way. Different avian studies have described that the flying effort may induce oxidative stress. A redox metabolism modified during the flight could thus influence the carotenoid conversion rate and, ultimately, animal coloration. Here, we aimed to infer the link between red carotenoid-based ornament expression and flight metabolism by increasing flying effort in wild male common crossbills Loxia curvirostra (Linnaeus). In this order, 295 adult males were captured with mist nets in an Iberian population during winter. Approximately half of the birds were experimentally handicapped through wing feather clipping to increase their flying effort, the other half being used as a control group. To stimulate the plumage regrown of a small surface during a short time-lapse, we also plucked the rump feathers from all the birds. A fraction of the birds with fully grown rump feathers (34 individuals) could be recaptured during the subsequent weeks. We did not detect any significant bias in recovery rates and morphological variables in this reduced subsample. However, among recaptured birds, individuals with experimentally impaired flying capacity showed body mass loss, whereas controls showed a trend to increase their weight. Moreover, clipped males showed redder feathers in the newly regrown rump area compared to controls. The results suggest that wing-clipped individuals ... Conference Object Avian Studies Digital.CSIC (Spanish National Research Council) Suecia ENVELOPE(-62.617,-62.617,-66.733,-66.733) Tuvo ENVELOPE(13.782,13.782,67.054,67.054) |
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collection |
Digital.CSIC (Spanish National Research Council) |
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ftcsic |
language |
unknown |
description |
Este congreso tuvo lugar en Estocolmo (Suecia) del 28 de julio al 2 de agosto. The animal signaling theory posits that conspicuous colorations exhibited by many animals have evolved as reliable signals of individual quality. Red carotenoid-based ornaments may depend on enzymatic transformations (oxidation) of dietary yellow carotenoids, which could occur in the inner mitochondrial membrane (IMM). Thus, carotenoid ketolation and cell respiration could share the same biochemical pathways. Accordingly, the level of trait expression (redness) would directly reveal the efficiency of individuals¿ metabolism and, hence, the bearer quality in an unfalsifiable way. Different avian studies have described that the flying effort may induce oxidative stress. A redox metabolism modified during the flight could thus influence the carotenoid conversion rate and, ultimately, animal coloration. Here, we aimed to infer the link between red carotenoid-based ornament expression and flight metabolism by increasing flying effort in wild male common crossbills Loxia curvirostra (Linnaeus). In this order, 295 adult males were captured with mist nets in an Iberian population during winter. Approximately half of the birds were experimentally handicapped through wing feather clipping to increase their flying effort, the other half being used as a control group. To stimulate the plumage regrown of a small surface during a short time-lapse, we also plucked the rump feathers from all the birds. A fraction of the birds with fully grown rump feathers (34 individuals) could be recaptured during the subsequent weeks. We did not detect any significant bias in recovery rates and morphological variables in this reduced subsample. However, among recaptured birds, individuals with experimentally impaired flying capacity showed body mass loss, whereas controls showed a trend to increase their weight. Moreover, clipped males showed redder feathers in the newly regrown rump area compared to controls. The results suggest that wing-clipped individuals ... |
format |
Conference Object |
author |
Cantarero, Alejandro Fernández-Eslava, Blanca Alonso, Daniel Alonso-Álvarez, Carlos |
spellingShingle |
Cantarero, Alejandro Fernández-Eslava, Blanca Alonso, Daniel Alonso-Álvarez, Carlos Wild common crossbills produce redder feathers when experimentally forced to increase flying effort |
author_facet |
Cantarero, Alejandro Fernández-Eslava, Blanca Alonso, Daniel Alonso-Álvarez, Carlos |
author_sort |
Cantarero, Alejandro |
title |
Wild common crossbills produce redder feathers when experimentally forced to increase flying effort |
title_short |
Wild common crossbills produce redder feathers when experimentally forced to increase flying effort |
title_full |
Wild common crossbills produce redder feathers when experimentally forced to increase flying effort |
title_fullStr |
Wild common crossbills produce redder feathers when experimentally forced to increase flying effort |
title_full_unstemmed |
Wild common crossbills produce redder feathers when experimentally forced to increase flying effort |
title_sort |
wild common crossbills produce redder feathers when experimentally forced to increase flying effort |
publisher |
International Society for Behavioral Ecology |
publishDate |
2022 |
url |
http://hdl.handle.net/10261/283358 |
long_lat |
ENVELOPE(-62.617,-62.617,-66.733,-66.733) ENVELOPE(13.782,13.782,67.054,67.054) |
geographic |
Suecia Tuvo |
geographic_facet |
Suecia Tuvo |
genre |
Avian Studies |
genre_facet |
Avian Studies |
op_relation |
Sí International Society for Bahavioral Ecology Congress (2022) http://hdl.handle.net/10261/283358 |
op_rights |
none |
_version_ |
1790598205563469824 |