Foraging behaviour and habitat-use drives niche segregation in sibling seabird species
International audience To mediate competition, similar sympatric species are assumed to use different resources, or the same but geographically separated resources. The two giant petrels (Macronectes spp.) are intriguing in that they are morphologically similar seabirds with overlapping diets and di...
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ftunivnantes:oai:HAL:hal-02940622v1 2023-05-15T16:19:45+02:00 Foraging behaviour and habitat-use drives niche segregation in sibling seabird species Reisinger, Ryan Carpenter-Kling, Tegan Connan, Maëlle Cherel, Yves Pistorius, Pierre Institute for Coastal and Marine Research and Department of Zoology South Africa Nelson Mandela University Port Elizabeth Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) 2020-09 https://hal.archives-ouvertes.fr/hal-02940622 https://doi.org/10.1098/rsos.200649 en eng HAL CCSD The Royal Society info:eu-repo/semantics/altIdentifier/doi/10.1098/rsos.200649 hal-02940622 https://hal.archives-ouvertes.fr/hal-02940622 doi:10.1098/rsos.200649 PUBMEDCENTRAL: PMC7540780 ISSN: 2054-5703 Royal Society Open Science https://hal.archives-ouvertes.fr/hal-02940622 Royal Society Open Science, 2020, 7 (9), pp.200649. ⟨10.1098/rsos.200649⟩ habitat selection diet stable isotopes movement competition partitioning [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2020 ftunivnantes https://doi.org/10.1098/rsos.200649 2023-01-03T23:59:29Z International audience To mediate competition, similar sympatric species are assumed to use different resources, or the same but geographically separated resources. The two giant petrels (Macronectes spp.) are intriguing in that they are morphologically similar seabirds with overlapping diets and distributions. To better understand the mechanisms allowing their coexistence, we investigated intra-and interspecific niche segregation at Marion Island (Southern Indian Ocean), one of the few localities where they breed in sympatry. We used GPS tracks from 94 individuals and remote-sensed environmental data to quantify habitat use, combined with blood carbon and nitrogen stable isotope ratios from 90 individuals to characterize their foraging habitat and trophic ecology. Females of both species made distant at-sea foraging trips and fed at a similar trophic level. However, they used distinct pelagic habitats. By contrast, males of both species mainly foraged on or near land, resulting in significant sexual segregation, but high interspecific habitat and diet overlap. However, some males showed flexible behavioural strategies, also making distant, pelagic foraging trips. Using contemporaneous tracking, environmental and stable isotope data we provide a clear example of how sympatric sibling species can be segregated along different foraging behaviour dimensions. Article in Journal/Newspaper Giant Petrels Marion Island Université de Nantes: HAL-UNIV-NANTES Indian Royal Society Open Science 7 9 200649 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
habitat selection diet stable isotopes movement competition partitioning [SDE]Environmental Sciences |
spellingShingle |
habitat selection diet stable isotopes movement competition partitioning [SDE]Environmental Sciences Reisinger, Ryan Carpenter-Kling, Tegan Connan, Maëlle Cherel, Yves Pistorius, Pierre Foraging behaviour and habitat-use drives niche segregation in sibling seabird species |
topic_facet |
habitat selection diet stable isotopes movement competition partitioning [SDE]Environmental Sciences |
description |
International audience To mediate competition, similar sympatric species are assumed to use different resources, or the same but geographically separated resources. The two giant petrels (Macronectes spp.) are intriguing in that they are morphologically similar seabirds with overlapping diets and distributions. To better understand the mechanisms allowing their coexistence, we investigated intra-and interspecific niche segregation at Marion Island (Southern Indian Ocean), one of the few localities where they breed in sympatry. We used GPS tracks from 94 individuals and remote-sensed environmental data to quantify habitat use, combined with blood carbon and nitrogen stable isotope ratios from 90 individuals to characterize their foraging habitat and trophic ecology. Females of both species made distant at-sea foraging trips and fed at a similar trophic level. However, they used distinct pelagic habitats. By contrast, males of both species mainly foraged on or near land, resulting in significant sexual segregation, but high interspecific habitat and diet overlap. However, some males showed flexible behavioural strategies, also making distant, pelagic foraging trips. Using contemporaneous tracking, environmental and stable isotope data we provide a clear example of how sympatric sibling species can be segregated along different foraging behaviour dimensions. |
author2 |
Institute for Coastal and Marine Research and Department of Zoology South Africa Nelson Mandela University Port Elizabeth Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) |
format |
Article in Journal/Newspaper |
author |
Reisinger, Ryan Carpenter-Kling, Tegan Connan, Maëlle Cherel, Yves Pistorius, Pierre |
author_facet |
Reisinger, Ryan Carpenter-Kling, Tegan Connan, Maëlle Cherel, Yves Pistorius, Pierre |
author_sort |
Reisinger, Ryan |
title |
Foraging behaviour and habitat-use drives niche segregation in sibling seabird species |
title_short |
Foraging behaviour and habitat-use drives niche segregation in sibling seabird species |
title_full |
Foraging behaviour and habitat-use drives niche segregation in sibling seabird species |
title_fullStr |
Foraging behaviour and habitat-use drives niche segregation in sibling seabird species |
title_full_unstemmed |
Foraging behaviour and habitat-use drives niche segregation in sibling seabird species |
title_sort |
foraging behaviour and habitat-use drives niche segregation in sibling seabird species |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://hal.archives-ouvertes.fr/hal-02940622 https://doi.org/10.1098/rsos.200649 |
geographic |
Indian |
geographic_facet |
Indian |
genre |
Giant Petrels Marion Island |
genre_facet |
Giant Petrels Marion Island |
op_source |
ISSN: 2054-5703 Royal Society Open Science https://hal.archives-ouvertes.fr/hal-02940622 Royal Society Open Science, 2020, 7 (9), pp.200649. ⟨10.1098/rsos.200649⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1098/rsos.200649 hal-02940622 https://hal.archives-ouvertes.fr/hal-02940622 doi:10.1098/rsos.200649 PUBMEDCENTRAL: PMC7540780 |
op_doi |
https://doi.org/10.1098/rsos.200649 |
container_title |
Royal Society Open Science |
container_volume |
7 |
container_issue |
9 |
container_start_page |
200649 |
_version_ |
1766006173113253888 |