Sexual segregation in a highly pagophilic and sexually dimorphic marine predator
International audience Sexual segregation is common in many species and has been attributed to intra-specific competition, sex-specific differences in foraging efficiency or in activity budgets and habitat choice. However, very few studies have simultaneously quantified sex-specific foraging strateg...
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Online Access: | https://hal.archives-ouvertes.fr/hal-02165662 https://doi.org/10.1101/472431 |
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ftccsdartic:oai:HAL:hal-02165662v1 2023-05-15T13:52:11+02:00 Sexual segregation in a highly pagophilic and sexually dimorphic marine predator Barbraud, Christophe Delord, Karine Kato, Akiko Bustamante, Paco Cherel, Yves Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) LIttoral ENvironnement et Sociétés - UMRi 7266 (LIENSs) Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS) 2019 https://hal.archives-ouvertes.fr/hal-02165662 https://doi.org/10.1101/472431 en eng HAL CCSD Peer Community In info:eu-repo/semantics/altIdentifier/doi/10.1101/472431 hal-02165662 https://hal.archives-ouvertes.fr/hal-02165662 doi:10.1101/472431 EISSN: 2606-4979 Peer Community in Ecology https://hal.archives-ouvertes.fr/hal-02165662 Peer Community in Ecology, Peer Community In, 2019, bioRxiv 472431, ver. 4, ⟨10.1101/472431⟩ sea ice concentration snow petrel bio-logging competition foraging isotopic niche Pagodroma nivea [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2019 ftccsdartic https://doi.org/10.1101/472431 2021-11-07T01:50:42Z International audience Sexual segregation is common in many species and has been attributed to intra-specific competition, sex-specific differences in foraging efficiency or in activity budgets and habitat choice. However, very few studies have simultaneously quantified sex-specific foraging strategies, at sea distribution, habitat use, and trophic ecology. Moreover, these studies come from low latitude areas reflecting a lack of evidence for polar species. We investigated sexual segregation in snow petrels Pagodroma nivea and combined movement, foraging trip efficiency, stable isotope and oceanographic data to test whether sexual segregation results from sex-specific habitat use. Breeding birds foraging in the Dumont d'Urville sea, Antarctica, were tracked during incubation. Some similarities between males and females foraging characteristics did not support the sexual segregation hypothesis. Indeed, space-use sharing and utilization distribution, d13C values and foraging trip performances (trip duration, length, speed and directions, mass gain, proportion mass gain) were similar between males and females. However, there was support for sexual segregation in foraging characteristics linked to foraging habitats. Females foraged less than males in areas with higher sea ice concentration (SIC >70%) and had lower d15N values in plasma, blood cells and feathers. Foraging efficiency (proportionate daily mass gain while foraging), was greater for females than for males, and was greater for larger females with deeper bills. Females were more efficient than males during short (<2 days) foraging trips, and for females, but not for males, mass gain, proportion mass gain and body condition at return from a foraging trip were positively correlated to SIC of the foraging areas. Together, these results suggest an absence of sexual segregation at large spatial scales in snow petrels during incubation, but strongly support habitat segregation between high (>70%) more profitable SIC (males) and low SIC areas ... Article in Journal/Newspaper Antarc* Antarctica D'Urville Sea Dumont D'Urville Sea Sea ice Snow Petrel Snow Petrels Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Dumont d'Urville ENVELOPE(140.017,140.017,-66.667,-66.667) Dumont-d'Urville ENVELOPE(140.013,140.013,-66.667,-66.667) Nivea ENVELOPE(-45.479,-45.479,-60.580,-60.580) D'Urville Sea ENVELOPE(140.000,140.000,-65.000,-65.000) |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
sea ice concentration snow petrel bio-logging competition foraging isotopic niche Pagodroma nivea [SDE]Environmental Sciences |
spellingShingle |
sea ice concentration snow petrel bio-logging competition foraging isotopic niche Pagodroma nivea [SDE]Environmental Sciences Barbraud, Christophe Delord, Karine Kato, Akiko Bustamante, Paco Cherel, Yves Sexual segregation in a highly pagophilic and sexually dimorphic marine predator |
topic_facet |
sea ice concentration snow petrel bio-logging competition foraging isotopic niche Pagodroma nivea [SDE]Environmental Sciences |
description |
International audience Sexual segregation is common in many species and has been attributed to intra-specific competition, sex-specific differences in foraging efficiency or in activity budgets and habitat choice. However, very few studies have simultaneously quantified sex-specific foraging strategies, at sea distribution, habitat use, and trophic ecology. Moreover, these studies come from low latitude areas reflecting a lack of evidence for polar species. We investigated sexual segregation in snow petrels Pagodroma nivea and combined movement, foraging trip efficiency, stable isotope and oceanographic data to test whether sexual segregation results from sex-specific habitat use. Breeding birds foraging in the Dumont d'Urville sea, Antarctica, were tracked during incubation. Some similarities between males and females foraging characteristics did not support the sexual segregation hypothesis. Indeed, space-use sharing and utilization distribution, d13C values and foraging trip performances (trip duration, length, speed and directions, mass gain, proportion mass gain) were similar between males and females. However, there was support for sexual segregation in foraging characteristics linked to foraging habitats. Females foraged less than males in areas with higher sea ice concentration (SIC >70%) and had lower d15N values in plasma, blood cells and feathers. Foraging efficiency (proportionate daily mass gain while foraging), was greater for females than for males, and was greater for larger females with deeper bills. Females were more efficient than males during short (<2 days) foraging trips, and for females, but not for males, mass gain, proportion mass gain and body condition at return from a foraging trip were positively correlated to SIC of the foraging areas. Together, these results suggest an absence of sexual segregation at large spatial scales in snow petrels during incubation, but strongly support habitat segregation between high (>70%) more profitable SIC (males) and low SIC areas ... |
author2 |
Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) LIttoral ENvironnement et Sociétés - UMRi 7266 (LIENSs) Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Barbraud, Christophe Delord, Karine Kato, Akiko Bustamante, Paco Cherel, Yves |
author_facet |
Barbraud, Christophe Delord, Karine Kato, Akiko Bustamante, Paco Cherel, Yves |
author_sort |
Barbraud, Christophe |
title |
Sexual segregation in a highly pagophilic and sexually dimorphic marine predator |
title_short |
Sexual segregation in a highly pagophilic and sexually dimorphic marine predator |
title_full |
Sexual segregation in a highly pagophilic and sexually dimorphic marine predator |
title_fullStr |
Sexual segregation in a highly pagophilic and sexually dimorphic marine predator |
title_full_unstemmed |
Sexual segregation in a highly pagophilic and sexually dimorphic marine predator |
title_sort |
sexual segregation in a highly pagophilic and sexually dimorphic marine predator |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.archives-ouvertes.fr/hal-02165662 https://doi.org/10.1101/472431 |
long_lat |
ENVELOPE(140.017,140.017,-66.667,-66.667) ENVELOPE(140.013,140.013,-66.667,-66.667) ENVELOPE(-45.479,-45.479,-60.580,-60.580) ENVELOPE(140.000,140.000,-65.000,-65.000) |
geographic |
Dumont d'Urville Dumont-d'Urville Nivea D'Urville Sea |
geographic_facet |
Dumont d'Urville Dumont-d'Urville Nivea D'Urville Sea |
genre |
Antarc* Antarctica D'Urville Sea Dumont D'Urville Sea Sea ice Snow Petrel Snow Petrels |
genre_facet |
Antarc* Antarctica D'Urville Sea Dumont D'Urville Sea Sea ice Snow Petrel Snow Petrels |
op_source |
EISSN: 2606-4979 Peer Community in Ecology https://hal.archives-ouvertes.fr/hal-02165662 Peer Community in Ecology, Peer Community In, 2019, bioRxiv 472431, ver. 4, ⟨10.1101/472431⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1101/472431 hal-02165662 https://hal.archives-ouvertes.fr/hal-02165662 doi:10.1101/472431 |
op_doi |
https://doi.org/10.1101/472431 |
_version_ |
1766256447594692608 |