Diet, isotopic niche, and spatial distribution of the white-headed petrel (Pterodroma lessonii) at Kerguelen Islands
International audience The subantarctic white-headed petrel is unique amongst Procellariidae by its biennial breeding frequency. Its food and feeding ecology is poorly known with limited available bio-logging data and no dietary and isotopic information. Our goal was to detail its prey species and i...
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ftunivrochelle:oai:HAL:hal-03831714v1 2024-02-11T09:57:25+01:00 Diet, isotopic niche, and spatial distribution of the white-headed petrel (Pterodroma lessonii) at Kerguelen Islands Cherel, Yves Delord, Karine Barbraud, Christophe Weimerskirch, Henri 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) 2022 https://hal.science/hal-03831714 https://doi.org/10.1007/s00300-022-03092-7 en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-022-03092-7 hal-03831714 https://hal.science/hal-03831714 doi:10.1007/s00300-022-03092-7 WOS: 000868470600001 ISSN: 0722-4060 EISSN: 1432-2056 Polar Biology https://hal.science/hal-03831714 Polar Biology, 2022, 45, pp.1607-1621. ⟨10.1007/s00300-022-03092-7⟩ Fish Food Myctophidae Procellariiformes Seabirds Southern ocean Squid [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2022 ftunivrochelle https://doi.org/10.1007/s00300-022-03092-7 2024-01-23T23:34:21Z International audience The subantarctic white-headed petrel is unique amongst Procellariidae by its biennial breeding frequency. Its food and feeding ecology is poorly known with limited available bio-logging data and no dietary and isotopic information. Our goal was to detail its prey species and isotopic niche at Kerguelen Islands, which is the most important breeding site in the Indian Ocean. Analysis of stomach contents (n = 56) indicated chicks were fed on fish (68% by mass) and secondarily on cephalopods (26%), whilst crustaceans were minor dietary components. Mesopelagic fishes were the main prey, with myctophids and melamphaids being the most important fish family in terms of both abundance (50% and 15% of the fish, respectively) and diversity (10 and three species). Prey distribution indicated that petrels foraged primarily in subantarctic waters and secondarily further south to feed their chicks, which is corroborated by the lower blood δ13C values of fledglings (n = 10) than incubating adults (n = 9). Body feather δ13C values (n = 45) indicate that adult white-headed petrels moulted over different latitudinal habitats, from the subtropics to Antarctica where δ15N values showed they fed on low trophic-level prey (most likely Antarctic krill). Indeed, three geolocator-tracked birds ranged widely, from the mid-Atlantic (18° W) to the eastern Indian Ocean (110° E) and from the warmer Subtropical Zone (19% of the locations), across the Subantarctic Zone (58%) to the colder Antarctic Zone (23%). Neither fishery-related items nor plastic debris were found in chick food samples, thus indicating no significant interactions with human activities, which is a key positive issue for the conservation of white-headed petrels. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Antarctica Kerguelen Islands Polar Biology Southern Ocean HAL - Université de La Rochelle Antarctic Southern Ocean Kerguelen Kerguelen Islands Indian Polar Biology 45 11 1607 1621 |
institution |
Open Polar |
collection |
HAL - Université de La Rochelle |
op_collection_id |
ftunivrochelle |
language |
English |
topic |
Fish Food Myctophidae Procellariiformes Seabirds Southern ocean Squid [SDE]Environmental Sciences |
spellingShingle |
Fish Food Myctophidae Procellariiformes Seabirds Southern ocean Squid [SDE]Environmental Sciences Cherel, Yves Delord, Karine Barbraud, Christophe Weimerskirch, Henri Diet, isotopic niche, and spatial distribution of the white-headed petrel (Pterodroma lessonii) at Kerguelen Islands |
topic_facet |
Fish Food Myctophidae Procellariiformes Seabirds Southern ocean Squid [SDE]Environmental Sciences |
description |
International audience The subantarctic white-headed petrel is unique amongst Procellariidae by its biennial breeding frequency. Its food and feeding ecology is poorly known with limited available bio-logging data and no dietary and isotopic information. Our goal was to detail its prey species and isotopic niche at Kerguelen Islands, which is the most important breeding site in the Indian Ocean. Analysis of stomach contents (n = 56) indicated chicks were fed on fish (68% by mass) and secondarily on cephalopods (26%), whilst crustaceans were minor dietary components. Mesopelagic fishes were the main prey, with myctophids and melamphaids being the most important fish family in terms of both abundance (50% and 15% of the fish, respectively) and diversity (10 and three species). Prey distribution indicated that petrels foraged primarily in subantarctic waters and secondarily further south to feed their chicks, which is corroborated by the lower blood δ13C values of fledglings (n = 10) than incubating adults (n = 9). Body feather δ13C values (n = 45) indicate that adult white-headed petrels moulted over different latitudinal habitats, from the subtropics to Antarctica where δ15N values showed they fed on low trophic-level prey (most likely Antarctic krill). Indeed, three geolocator-tracked birds ranged widely, from the mid-Atlantic (18° W) to the eastern Indian Ocean (110° E) and from the warmer Subtropical Zone (19% of the locations), across the Subantarctic Zone (58%) to the colder Antarctic Zone (23%). Neither fishery-related items nor plastic debris were found in chick food samples, thus indicating no significant interactions with human activities, which is a key positive issue for the conservation of white-headed petrels. |
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) |
format |
Article in Journal/Newspaper |
author |
Cherel, Yves Delord, Karine Barbraud, Christophe Weimerskirch, Henri |
author_facet |
Cherel, Yves Delord, Karine Barbraud, Christophe Weimerskirch, Henri |
author_sort |
Cherel, Yves |
title |
Diet, isotopic niche, and spatial distribution of the white-headed petrel (Pterodroma lessonii) at Kerguelen Islands |
title_short |
Diet, isotopic niche, and spatial distribution of the white-headed petrel (Pterodroma lessonii) at Kerguelen Islands |
title_full |
Diet, isotopic niche, and spatial distribution of the white-headed petrel (Pterodroma lessonii) at Kerguelen Islands |
title_fullStr |
Diet, isotopic niche, and spatial distribution of the white-headed petrel (Pterodroma lessonii) at Kerguelen Islands |
title_full_unstemmed |
Diet, isotopic niche, and spatial distribution of the white-headed petrel (Pterodroma lessonii) at Kerguelen Islands |
title_sort |
diet, isotopic niche, and spatial distribution of the white-headed petrel (pterodroma lessonii) at kerguelen islands |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.science/hal-03831714 https://doi.org/10.1007/s00300-022-03092-7 |
geographic |
Antarctic Southern Ocean Kerguelen Kerguelen Islands Indian |
geographic_facet |
Antarctic Southern Ocean Kerguelen Kerguelen Islands Indian |
genre |
Antarc* Antarctic Antarctic Krill Antarctica Kerguelen Islands Polar Biology Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarctica Kerguelen Islands Polar Biology Southern Ocean |
op_source |
ISSN: 0722-4060 EISSN: 1432-2056 Polar Biology https://hal.science/hal-03831714 Polar Biology, 2022, 45, pp.1607-1621. ⟨10.1007/s00300-022-03092-7⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-022-03092-7 hal-03831714 https://hal.science/hal-03831714 doi:10.1007/s00300-022-03092-7 WOS: 000868470600001 |
op_doi |
https://doi.org/10.1007/s00300-022-03092-7 |
container_title |
Polar Biology |
container_volume |
45 |
container_issue |
11 |
container_start_page |
1607 |
op_container_end_page |
1621 |
_version_ |
1790609721891225600 |