Individual parameters shape foraging activity in breeding king penguins
The variability in individual fitness within a population is likely to be mediated through individual foraging ability and tactics, themselves linked to age- or experience-related processes, but also to differences in individual quality. Not only age, experience, and quality but also sex-related for...
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fthighwire:oai:open-archive.highwire.org:beheco:27/1/352 2023-05-15T17:03:55+02:00 Individual parameters shape foraging activity in breeding king penguins Le Vaillant, Maryline Ropert-Coudert, Yan Le Maho, Yvon Le Bohec, Céline 2016-01-01 00:00:00.0 text/html http://beheco.oxfordjournals.org/cgi/content/short/27/1/352 https://doi.org/10.1093/beheco/arv146 en eng Oxford University Press http://beheco.oxfordjournals.org/cgi/content/short/27/1/352 http://dx.doi.org/10.1093/beheco/arv146 Copyright (C) 2016, International Society for Behavioral Ecology Original Article TEXT 2016 fthighwire https://doi.org/10.1093/beheco/arv146 2016-11-16T19:12:18Z The variability in individual fitness within a population is likely to be mediated through individual foraging ability and tactics, themselves linked to age- or experience-related processes, but also to differences in individual quality. Not only age, experience, and quality but also sex-related foraging strategies should particularly play an important role in long-lived central-place foragers that have to cope with strong environmental constraints. We monitored the foraging effort (foraging trip durations and number of trips) of 262 known-age micro-tagged king penguins, Aptenodytes patagonicus , at different breeding stages during one of their breeding cycles. We investigated how their age (4–11 years old), sex, past breeding experience (the number of successful breeding attempts), and breeding quality (the expected breeding success, corresponding to the residual of the linear relationship between the age and on the number of past breeding success divided by the number of breeding attempts) affected foraging over a whole breeding season. During the incubation, younger birds (4 years old) undertook longer foraging trips compared with older ones. During the brooding phase and the second period of the crèching phase, more experienced birds performed shorter foraging trip than those with a low breeding experience, whereas, during the first period of the crèching phase, individuals with better breeding quality performed shorter foraging trips at sea than low breeding quality individuals. Sex-specific foraging patterns were also observed depending on the period of the breeding cycle. Our study shows, for the first time, how foraging effort can be driven by a complex interplay of several individual parameters according to breeding stage and resource availability and abundance. Text King Penguins HighWire Press (Stanford University) Behavioral Ecology 27 1 352 362 |
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HighWire Press (Stanford University) |
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English |
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Original Article |
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Original Article Le Vaillant, Maryline Ropert-Coudert, Yan Le Maho, Yvon Le Bohec, Céline Individual parameters shape foraging activity in breeding king penguins |
topic_facet |
Original Article |
description |
The variability in individual fitness within a population is likely to be mediated through individual foraging ability and tactics, themselves linked to age- or experience-related processes, but also to differences in individual quality. Not only age, experience, and quality but also sex-related foraging strategies should particularly play an important role in long-lived central-place foragers that have to cope with strong environmental constraints. We monitored the foraging effort (foraging trip durations and number of trips) of 262 known-age micro-tagged king penguins, Aptenodytes patagonicus , at different breeding stages during one of their breeding cycles. We investigated how their age (4–11 years old), sex, past breeding experience (the number of successful breeding attempts), and breeding quality (the expected breeding success, corresponding to the residual of the linear relationship between the age and on the number of past breeding success divided by the number of breeding attempts) affected foraging over a whole breeding season. During the incubation, younger birds (4 years old) undertook longer foraging trips compared with older ones. During the brooding phase and the second period of the crèching phase, more experienced birds performed shorter foraging trip than those with a low breeding experience, whereas, during the first period of the crèching phase, individuals with better breeding quality performed shorter foraging trips at sea than low breeding quality individuals. Sex-specific foraging patterns were also observed depending on the period of the breeding cycle. Our study shows, for the first time, how foraging effort can be driven by a complex interplay of several individual parameters according to breeding stage and resource availability and abundance. |
format |
Text |
author |
Le Vaillant, Maryline Ropert-Coudert, Yan Le Maho, Yvon Le Bohec, Céline |
author_facet |
Le Vaillant, Maryline Ropert-Coudert, Yan Le Maho, Yvon Le Bohec, Céline |
author_sort |
Le Vaillant, Maryline |
title |
Individual parameters shape foraging activity in breeding king penguins |
title_short |
Individual parameters shape foraging activity in breeding king penguins |
title_full |
Individual parameters shape foraging activity in breeding king penguins |
title_fullStr |
Individual parameters shape foraging activity in breeding king penguins |
title_full_unstemmed |
Individual parameters shape foraging activity in breeding king penguins |
title_sort |
individual parameters shape foraging activity in breeding king penguins |
publisher |
Oxford University Press |
publishDate |
2016 |
url |
http://beheco.oxfordjournals.org/cgi/content/short/27/1/352 https://doi.org/10.1093/beheco/arv146 |
genre |
King Penguins |
genre_facet |
King Penguins |
op_relation |
http://beheco.oxfordjournals.org/cgi/content/short/27/1/352 http://dx.doi.org/10.1093/beheco/arv146 |
op_rights |
Copyright (C) 2016, International Society for Behavioral Ecology |
op_doi |
https://doi.org/10.1093/beheco/arv146 |
container_title |
Behavioral Ecology |
container_volume |
27 |
container_issue |
1 |
container_start_page |
352 |
op_container_end_page |
362 |
_version_ |
1766057905860116480 |