Combined stomach content, lipid and stable isotope analyses reveal spatial and trophic partitioning among three sympatric albatrosses from the Southern Ocean
International audience A combination of dietary techniques that integrate data on food and feeding habits over days, weeks and months was used to investigate resource partitioning among 3 sympatric albatrosses, namely the grey-headed Thalassarche chrysostoma (GHA), light-mantled sooty Phoebetria pal...
Published in: | Marine Ecology Progress Series |
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Language: | English |
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HAL CCSD
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Online Access: | https://hal.science/hal-00958821 https://doi.org/10.3354/meps10606 |
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ftccsdartic:oai:HAL:hal-00958821v1 2024-02-11T09:58:45+01:00 Combined stomach content, lipid and stable isotope analyses reveal spatial and trophic partitioning among three sympatric albatrosses from the Southern Ocean Connan, Maëlle Mcquaid, Christopher D. Bonnevie, Bo T. Smale, Malcolm J. Cherel, Yves Percy FitzPatrick Institute of African Ornithology University of Cape Town Department of Zoology and Entomology Rhodes University, Grahamstown Department of Zoology and Entomology Pretoria University of Pretoria South Africa Information Technology Division Port Elizabeth Museum at Bayworld Zoology Department Nelson Mandela University Port Elizabeth Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Institut National de la Recherche Agronomique (INRA)-La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) 2014 https://hal.science/hal-00958821 https://doi.org/10.3354/meps10606 en eng HAL CCSD Inter Research info:eu-repo/semantics/altIdentifier/doi/10.3354/meps10606 hal-00958821 https://hal.science/hal-00958821 doi:10.3354/meps10606 WOS: 000330723600019 ISSN: 0171-8630 EISSN: 1616-1599 Marine Ecology Progress Series https://hal.science/hal-00958821 Marine Ecology Progress Series, 2014, 497, pp.259-272. ⟨10.3354/meps10606⟩ Phoebetria palpebrata Phoebetria fusca Thalassarche chrysostoma Trophic segregation Spatial segregation Moulting period Breeding season [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2014 ftccsdartic https://doi.org/10.3354/meps10606 2024-01-27T23:24:23Z International audience A combination of dietary techniques that integrate data on food and feeding habits over days, weeks and months was used to investigate resource partitioning among 3 sympatric albatrosses, namely the grey-headed Thalassarche chrysostoma (GHA), light-mantled sooty Phoebetria palpebrata (LMSA) and sooty Phoebetria fusca (SA) albatrosses. These medium-size albatrosses typically breed every 2 yr, and Marion Island (southern Indian Ocean) is the only breeding site where the 3 species are accessible. Stomach content analysis provided dietary information about the most recent meal, analysis of fatty acids in stomach oils about the last foraging trip, and carbon and nitrogen stable isotope values of blood and feathers about the chick-rearing (breeding) and moulting periods, respectively. The combination of techniques highlighted a complex pattern regarding the spatial and trophic segregation between the 3 species. During both seasons, SA were spatially segregated from LMSA and GHA, foraging farther north (in subantarctic and subtropical areas) than the 2 other species (subantarctic and Antarctic waters). When feeding for themselves during the breeding season (blood isotopic signatures), adults showed a clear spatial segregation. When bringing back food for their chicks (stomach contents), trophic segregation became obvious, with the 2 Phoebetria species specializing mostly on squids. The results illustrate how sympatrically breeding birds can show niche partitioning through both spatial segregation and prey specialization. Article in Journal/Newspaper Antarc* Antarctic Marion Island Southern Ocean Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Antarctic Indian Southern Ocean Marine Ecology Progress Series 497 259 272 |
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 |
Phoebetria palpebrata Phoebetria fusca Thalassarche chrysostoma Trophic segregation Spatial segregation Moulting period Breeding season [SDE]Environmental Sciences |
spellingShingle |
Phoebetria palpebrata Phoebetria fusca Thalassarche chrysostoma Trophic segregation Spatial segregation Moulting period Breeding season [SDE]Environmental Sciences Connan, Maëlle Mcquaid, Christopher D. Bonnevie, Bo T. Smale, Malcolm J. Cherel, Yves Combined stomach content, lipid and stable isotope analyses reveal spatial and trophic partitioning among three sympatric albatrosses from the Southern Ocean |
topic_facet |
Phoebetria palpebrata Phoebetria fusca Thalassarche chrysostoma Trophic segregation Spatial segregation Moulting period Breeding season [SDE]Environmental Sciences |
description |
International audience A combination of dietary techniques that integrate data on food and feeding habits over days, weeks and months was used to investigate resource partitioning among 3 sympatric albatrosses, namely the grey-headed Thalassarche chrysostoma (GHA), light-mantled sooty Phoebetria palpebrata (LMSA) and sooty Phoebetria fusca (SA) albatrosses. These medium-size albatrosses typically breed every 2 yr, and Marion Island (southern Indian Ocean) is the only breeding site where the 3 species are accessible. Stomach content analysis provided dietary information about the most recent meal, analysis of fatty acids in stomach oils about the last foraging trip, and carbon and nitrogen stable isotope values of blood and feathers about the chick-rearing (breeding) and moulting periods, respectively. The combination of techniques highlighted a complex pattern regarding the spatial and trophic segregation between the 3 species. During both seasons, SA were spatially segregated from LMSA and GHA, foraging farther north (in subantarctic and subtropical areas) than the 2 other species (subantarctic and Antarctic waters). When feeding for themselves during the breeding season (blood isotopic signatures), adults showed a clear spatial segregation. When bringing back food for their chicks (stomach contents), trophic segregation became obvious, with the 2 Phoebetria species specializing mostly on squids. The results illustrate how sympatrically breeding birds can show niche partitioning through both spatial segregation and prey specialization. |
author2 |
Percy FitzPatrick Institute of African Ornithology University of Cape Town Department of Zoology and Entomology Rhodes University, Grahamstown Department of Zoology and Entomology Pretoria University of Pretoria South Africa Information Technology Division Port Elizabeth Museum at Bayworld Zoology Department Nelson Mandela University Port Elizabeth Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Institut National de la Recherche Agronomique (INRA)-La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Connan, Maëlle Mcquaid, Christopher D. Bonnevie, Bo T. Smale, Malcolm J. Cherel, Yves |
author_facet |
Connan, Maëlle Mcquaid, Christopher D. Bonnevie, Bo T. Smale, Malcolm J. Cherel, Yves |
author_sort |
Connan, Maëlle |
title |
Combined stomach content, lipid and stable isotope analyses reveal spatial and trophic partitioning among three sympatric albatrosses from the Southern Ocean |
title_short |
Combined stomach content, lipid and stable isotope analyses reveal spatial and trophic partitioning among three sympatric albatrosses from the Southern Ocean |
title_full |
Combined stomach content, lipid and stable isotope analyses reveal spatial and trophic partitioning among three sympatric albatrosses from the Southern Ocean |
title_fullStr |
Combined stomach content, lipid and stable isotope analyses reveal spatial and trophic partitioning among three sympatric albatrosses from the Southern Ocean |
title_full_unstemmed |
Combined stomach content, lipid and stable isotope analyses reveal spatial and trophic partitioning among three sympatric albatrosses from the Southern Ocean |
title_sort |
combined stomach content, lipid and stable isotope analyses reveal spatial and trophic partitioning among three sympatric albatrosses from the southern ocean |
publisher |
HAL CCSD |
publishDate |
2014 |
url |
https://hal.science/hal-00958821 https://doi.org/10.3354/meps10606 |
geographic |
Antarctic Indian Southern Ocean |
geographic_facet |
Antarctic Indian Southern Ocean |
genre |
Antarc* Antarctic Marion Island Southern Ocean |
genre_facet |
Antarc* Antarctic Marion Island Southern Ocean |
op_source |
ISSN: 0171-8630 EISSN: 1616-1599 Marine Ecology Progress Series https://hal.science/hal-00958821 Marine Ecology Progress Series, 2014, 497, pp.259-272. ⟨10.3354/meps10606⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3354/meps10606 hal-00958821 https://hal.science/hal-00958821 doi:10.3354/meps10606 WOS: 000330723600019 |
op_doi |
https://doi.org/10.3354/meps10606 |
container_title |
Marine Ecology Progress Series |
container_volume |
497 |
container_start_page |
259 |
op_container_end_page |
272 |
_version_ |
1790594494327947264 |