Inter-Annual Variability of Fledgling Sex Ratio in King Penguins
International audience As the number of breeding pairs depends on the adult sex ratio in a monogamousspecies with biparental care, investigating sex-ratio variability in natural populationsis essential to understand population dynamics. Using 10 years of data (2000–2009) in a seasonally monogamous s...
Published in: | PLoS ONE |
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Main Authors: | , , , , , , |
Other Authors: | , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2014
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Online Access: | https://hal.science/hal-01095097 https://hal.science/hal-01095097/document https://hal.science/hal-01095097/file/journal.pone.0114052.pdf https://doi.org/10.1371/journal.pone.0114052 |
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openpolar |
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Open Polar |
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Portail HAL Institut Agro Montpellier |
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ftsupagro |
language |
English |
topic |
[SDE]Environmental Sciences |
spellingShingle |
[SDE]Environmental Sciences Bordier, Célia Saraux, Claire Viblanc, Vincent A. Gachot-Neveu, Hélène Beaugey, Magali Le Maho, Yvon Le Bohec, Céline Inter-Annual Variability of Fledgling Sex Ratio in King Penguins |
topic_facet |
[SDE]Environmental Sciences |
description |
International audience As the number of breeding pairs depends on the adult sex ratio in a monogamousspecies with biparental care, investigating sex-ratio variability in natural populationsis essential to understand population dynamics. Using 10 years of data (2000–2009) in a seasonally monogamous seabird, the king penguin (Aptenodytespatagonicus), we investigated the annual sex ratio at fledging, and the potentialenvironmental causes for its variation. Over more than 4000 birds, the annual sexratio at fledging was highly variable (ranging from 44.4% to 58.3% of males), and onaverage slightly biased towards males (51.6%). Yearly variation in sex-ratio biaswas neither related to density within the colony, nor to global or local oceanographicconditions known to affect both the productivity and accessibility of penguinforaging areas. However, rising sea surface temperature coincided with an increasein fledging sex-ratio variability. Fledging sex ratio was also correlated withdifference in body condition between male and female fledglings. When moremales were produced in a given year, their body condition was higher (andreciprocally), suggesting that parents might adopt a sex-biased allocation strategydepending on yearly environmental conditions and/or that the effect ofenvironmental parameters on chick condition and survival may be sex-dependent.The initial bias in sex ratio observed at the juvenile stage tended to return to 1:1equilibrium upon first breeding attempts, as would be expected from Fisher’sclassic theory of offspring sex-ratio variation. |
author2 |
Département Ecologie, Physiologie et Ethologie (DEPE-IPHC) Institut Pluridisciplinaire Hubert Curien (IPHC) Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS) Ecosystèmes Marins Exploités (UMR EME) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Montpellier (UM) AgroParisTech Centre d’Ecologie Fonctionnelle et Evolutive (CEFE) Université Paul-Valéry - Montpellier 3 (UPVM)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-École Pratique des Hautes Études (EPHE) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD France-Sud )-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro) Centre Scientifique de Monaco Centre for Ecological and Evolutionary Synthesis (CEES) Department of Biosciences Oslo Faculty of Mathematics and Natural Sciences Oslo University of Oslo (UiO)-University of Oslo (UiO)-Faculty of Mathematics and Natural Sciences Oslo University of Oslo (UiO)-University of Oslo (UiO) |
format |
Article in Journal/Newspaper |
author |
Bordier, Célia Saraux, Claire Viblanc, Vincent A. Gachot-Neveu, Hélène Beaugey, Magali Le Maho, Yvon Le Bohec, Céline |
author_facet |
Bordier, Célia Saraux, Claire Viblanc, Vincent A. Gachot-Neveu, Hélène Beaugey, Magali Le Maho, Yvon Le Bohec, Céline |
author_sort |
Bordier, Célia |
title |
Inter-Annual Variability of Fledgling Sex Ratio in King Penguins |
title_short |
Inter-Annual Variability of Fledgling Sex Ratio in King Penguins |
title_full |
Inter-Annual Variability of Fledgling Sex Ratio in King Penguins |
title_fullStr |
Inter-Annual Variability of Fledgling Sex Ratio in King Penguins |
title_full_unstemmed |
Inter-Annual Variability of Fledgling Sex Ratio in King Penguins |
title_sort |
inter-annual variability of fledgling sex ratio in king penguins |
publisher |
HAL CCSD |
publishDate |
2014 |
url |
https://hal.science/hal-01095097 https://hal.science/hal-01095097/document https://hal.science/hal-01095097/file/journal.pone.0114052.pdf https://doi.org/10.1371/journal.pone.0114052 |
genre |
King Penguins |
genre_facet |
King Penguins |
op_source |
ISSN: 1932-6203 EISSN: 1932-6203 PLoS ONE https://hal.science/hal-01095097 PLoS ONE, 2014, 9 (12), pp.e114052. ⟨10.1371/journal.pone.0114052⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1371/journal.pone.0114052 hal-01095097 https://hal.science/hal-01095097 https://hal.science/hal-01095097/document https://hal.science/hal-01095097/file/journal.pone.0114052.pdf doi:10.1371/journal.pone.0114052 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1371/journal.pone.0114052 |
container_title |
PLoS ONE |
container_volume |
9 |
container_issue |
12 |
container_start_page |
e114052 |
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1799483199138562048 |
spelling |
ftsupagro:oai:HAL:hal-01095097v1 2024-05-19T07:43:28+00:00 Inter-Annual Variability of Fledgling Sex Ratio in King Penguins Bordier, Célia Saraux, Claire Viblanc, Vincent A. Gachot-Neveu, Hélène Beaugey, Magali Le Maho, Yvon Le Bohec, Céline Département Ecologie, Physiologie et Ethologie (DEPE-IPHC) Institut Pluridisciplinaire Hubert Curien (IPHC) Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS) Ecosystèmes Marins Exploités (UMR EME) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Montpellier (UM) AgroParisTech Centre d’Ecologie Fonctionnelle et Evolutive (CEFE) Université Paul-Valéry - Montpellier 3 (UPVM)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-École Pratique des Hautes Études (EPHE) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD France-Sud )-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro) Centre Scientifique de Monaco Centre for Ecological and Evolutionary Synthesis (CEES) Department of Biosciences Oslo Faculty of Mathematics and Natural Sciences Oslo University of Oslo (UiO)-University of Oslo (UiO)-Faculty of Mathematics and Natural Sciences Oslo University of Oslo (UiO)-University of Oslo (UiO) 2014 https://hal.science/hal-01095097 https://hal.science/hal-01095097/document https://hal.science/hal-01095097/file/journal.pone.0114052.pdf https://doi.org/10.1371/journal.pone.0114052 en eng HAL CCSD Public Library of Science info:eu-repo/semantics/altIdentifier/doi/10.1371/journal.pone.0114052 hal-01095097 https://hal.science/hal-01095097 https://hal.science/hal-01095097/document https://hal.science/hal-01095097/file/journal.pone.0114052.pdf doi:10.1371/journal.pone.0114052 info:eu-repo/semantics/OpenAccess ISSN: 1932-6203 EISSN: 1932-6203 PLoS ONE https://hal.science/hal-01095097 PLoS ONE, 2014, 9 (12), pp.e114052. ⟨10.1371/journal.pone.0114052⟩ [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2014 ftsupagro https://doi.org/10.1371/journal.pone.0114052 2024-04-25T17:13:16Z International audience As the number of breeding pairs depends on the adult sex ratio in a monogamousspecies with biparental care, investigating sex-ratio variability in natural populationsis essential to understand population dynamics. Using 10 years of data (2000–2009) in a seasonally monogamous seabird, the king penguin (Aptenodytespatagonicus), we investigated the annual sex ratio at fledging, and the potentialenvironmental causes for its variation. Over more than 4000 birds, the annual sexratio at fledging was highly variable (ranging from 44.4% to 58.3% of males), and onaverage slightly biased towards males (51.6%). Yearly variation in sex-ratio biaswas neither related to density within the colony, nor to global or local oceanographicconditions known to affect both the productivity and accessibility of penguinforaging areas. However, rising sea surface temperature coincided with an increasein fledging sex-ratio variability. Fledging sex ratio was also correlated withdifference in body condition between male and female fledglings. When moremales were produced in a given year, their body condition was higher (andreciprocally), suggesting that parents might adopt a sex-biased allocation strategydepending on yearly environmental conditions and/or that the effect ofenvironmental parameters on chick condition and survival may be sex-dependent.The initial bias in sex ratio observed at the juvenile stage tended to return to 1:1equilibrium upon first breeding attempts, as would be expected from Fisher’sclassic theory of offspring sex-ratio variation. Article in Journal/Newspaper King Penguins Portail HAL Institut Agro Montpellier PLoS ONE 9 12 e114052 |