At-sea behavioural ecology of the endangered MacGillivray’s prion from Saint Paul Island: combining tracking and stable isotopes
International audience Seabirds play important roles as marine ecosystem sentinels. Studying their at-sea ecology is essential for understanding how environmental variability affects their populations. However, the at-sea ecology of small-sized temperate seabirds remains poorly studied. We explored...
Published in: | Marine Ecology Progress Series |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | https://hal.science/hal-03790607 https://doi.org/10.3354/meps14136 |
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ftunivnantes:oai:HAL:hal-03790607v1 2023-05-15T13:34:11+02:00 At-sea behavioural ecology of the endangered MacGillivray’s prion from Saint Paul Island: combining tracking and stable isotopes Delord, Karine Cherel, Yves Roy, Amédée Bustamante, Paco Swadling, Kerrie M Weimerskirch, Henri Bost, Charles‐andré Barbraud, Christophe 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) Institut de Recherche pour le Développement (IRD) Sete, France Institut de Recherche pour le Développement (IRD) LIttoral ENvironnement et Sociétés (LIENSs) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Institut Universitaire de France (IUF) Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.) Institute for Marine and Antarctic Studies and Australian Antarctic Program Partnership (AAPP) Australia University of Tasmania Hobart, Australia (UTAS) 2022-09-22 https://hal.science/hal-03790607 https://doi.org/10.3354/meps14136 en eng HAL CCSD Inter Research info:eu-repo/semantics/altIdentifier/doi/10.3354/meps14136 hal-03790607 https://hal.science/hal-03790607 doi:10.3354/meps14136 ISSN: 0171-8630 EISSN: 1616-1599 Marine Ecology Progress Series https://hal.science/hal-03790607 Marine Ecology Progress Series, 2022, 697, pp.149-165. ⟨10.3354/meps14136⟩ Pachyptila macgillivrayi At-sea distribution Activity pattern Southern Indian Ocean Geolocation GPS Seabirds Bill width Trophic position [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2022 ftunivnantes https://doi.org/10.3354/meps14136 2023-03-08T01:24:12Z International audience Seabirds play important roles as marine ecosystem sentinels. Studying their at-sea ecology is essential for understanding how environmental variability affects their populations. However, the at-sea ecology of small-sized temperate seabirds remains poorly studied. We explored the at-sea ecology of the Critically Endangered MacGillivray’s prion Pachyptila macgillivrayi breeding on the subtropical Saint Paul Island. Using global location sensor loggers and stable isotope analysis, we investigated movements, migratory strategies, at-sea activity and moulting period, and characterized the isotopic niche of tracked individuals. During incubation, MacGillivray’s prions remained in temperate waters north of the Subtropical Front, possibly feeding on prey caught in cold eddies. During the inter-breeding period, individuals wintered almost equally to the north and south of the Subtropical Front in 2 distinct sectors (Tasman Sea and Southwest Indian Ridge). Daily activity varied seasonally, and individuals overwintering in the Tasman Sea spent more time flying at night when moonlight intensity was high. Moulting occurred after the breeding period and lasted longer compared to other prion species. Isotopic data suggest a higher dietary proportion of low trophic-level prey for MacGillivray’s prions than for Antarctic and slender-billed prions, highlighting trophic segregation in relation to bill width. Our study provides new evidence to understand the suite of adaptations allowing the abundant prion species to coexist by feeding on prey of different sizes. Contrary to the majority of seabird species, MacGillivray’s prions from Saint Paul Island exhibited 2 migratory tactics with associated differences in at-sea activity, leading to questions about the origin of these differences. Article in Journal/Newspaper Antarc* Antarctic Saint-Paul Island Université de Nantes: HAL-UNIV-NANTES Antarctic Indian Saint-Paul ENVELOPE(-57.715,-57.715,51.467,51.467) Marine Ecology Progress Series 697 149 165 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
Pachyptila macgillivrayi At-sea distribution Activity pattern Southern Indian Ocean Geolocation GPS Seabirds Bill width Trophic position [SDE]Environmental Sciences |
spellingShingle |
Pachyptila macgillivrayi At-sea distribution Activity pattern Southern Indian Ocean Geolocation GPS Seabirds Bill width Trophic position [SDE]Environmental Sciences Delord, Karine Cherel, Yves Roy, Amédée Bustamante, Paco Swadling, Kerrie M Weimerskirch, Henri Bost, Charles‐andré Barbraud, Christophe At-sea behavioural ecology of the endangered MacGillivray’s prion from Saint Paul Island: combining tracking and stable isotopes |
topic_facet |
Pachyptila macgillivrayi At-sea distribution Activity pattern Southern Indian Ocean Geolocation GPS Seabirds Bill width Trophic position [SDE]Environmental Sciences |
description |
International audience Seabirds play important roles as marine ecosystem sentinels. Studying their at-sea ecology is essential for understanding how environmental variability affects their populations. However, the at-sea ecology of small-sized temperate seabirds remains poorly studied. We explored the at-sea ecology of the Critically Endangered MacGillivray’s prion Pachyptila macgillivrayi breeding on the subtropical Saint Paul Island. Using global location sensor loggers and stable isotope analysis, we investigated movements, migratory strategies, at-sea activity and moulting period, and characterized the isotopic niche of tracked individuals. During incubation, MacGillivray’s prions remained in temperate waters north of the Subtropical Front, possibly feeding on prey caught in cold eddies. During the inter-breeding period, individuals wintered almost equally to the north and south of the Subtropical Front in 2 distinct sectors (Tasman Sea and Southwest Indian Ridge). Daily activity varied seasonally, and individuals overwintering in the Tasman Sea spent more time flying at night when moonlight intensity was high. Moulting occurred after the breeding period and lasted longer compared to other prion species. Isotopic data suggest a higher dietary proportion of low trophic-level prey for MacGillivray’s prions than for Antarctic and slender-billed prions, highlighting trophic segregation in relation to bill width. Our study provides new evidence to understand the suite of adaptations allowing the abundant prion species to coexist by feeding on prey of different sizes. Contrary to the majority of seabird species, MacGillivray’s prions from Saint Paul Island exhibited 2 migratory tactics with associated differences in at-sea activity, leading to questions about the origin of these differences. |
author2 |
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) Institut de Recherche pour le Développement (IRD) Sete, France Institut de Recherche pour le Développement (IRD) LIttoral ENvironnement et Sociétés (LIENSs) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Institut Universitaire de France (IUF) Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.) Institute for Marine and Antarctic Studies and Australian Antarctic Program Partnership (AAPP) Australia University of Tasmania Hobart, Australia (UTAS) |
format |
Article in Journal/Newspaper |
author |
Delord, Karine Cherel, Yves Roy, Amédée Bustamante, Paco Swadling, Kerrie M Weimerskirch, Henri Bost, Charles‐andré Barbraud, Christophe |
author_facet |
Delord, Karine Cherel, Yves Roy, Amédée Bustamante, Paco Swadling, Kerrie M Weimerskirch, Henri Bost, Charles‐andré Barbraud, Christophe |
author_sort |
Delord, Karine |
title |
At-sea behavioural ecology of the endangered MacGillivray’s prion from Saint Paul Island: combining tracking and stable isotopes |
title_short |
At-sea behavioural ecology of the endangered MacGillivray’s prion from Saint Paul Island: combining tracking and stable isotopes |
title_full |
At-sea behavioural ecology of the endangered MacGillivray’s prion from Saint Paul Island: combining tracking and stable isotopes |
title_fullStr |
At-sea behavioural ecology of the endangered MacGillivray’s prion from Saint Paul Island: combining tracking and stable isotopes |
title_full_unstemmed |
At-sea behavioural ecology of the endangered MacGillivray’s prion from Saint Paul Island: combining tracking and stable isotopes |
title_sort |
at-sea behavioural ecology of the endangered macgillivray’s prion from saint paul island: combining tracking and stable isotopes |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.science/hal-03790607 https://doi.org/10.3354/meps14136 |
long_lat |
ENVELOPE(-57.715,-57.715,51.467,51.467) |
geographic |
Antarctic Indian Saint-Paul |
geographic_facet |
Antarctic Indian Saint-Paul |
genre |
Antarc* Antarctic Saint-Paul Island |
genre_facet |
Antarc* Antarctic Saint-Paul Island |
op_source |
ISSN: 0171-8630 EISSN: 1616-1599 Marine Ecology Progress Series https://hal.science/hal-03790607 Marine Ecology Progress Series, 2022, 697, pp.149-165. ⟨10.3354/meps14136⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3354/meps14136 hal-03790607 https://hal.science/hal-03790607 doi:10.3354/meps14136 |
op_doi |
https://doi.org/10.3354/meps14136 |
container_title |
Marine Ecology Progress Series |
container_volume |
697 |
container_start_page |
149 |
op_container_end_page |
165 |
_version_ |
1766049643380080640 |