Summer diet of king penguins (Aptenodytes patagonicus) at the Falkland Islands, southern Atlantic Ocean
International audience The diet of king penguins (Aptenodytes patagonicus) brooding chicks was investigated during February 2001 at the Falkland Islands, where a small but increasing population is located at the limit of the breeding range of this species. Fish was the most important food source by...
Published in: | Polar Biology |
---|---|
Main Authors: | , , |
Other Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2002
|
Subjects: | |
Online Access: | https://hal.science/hal-00191976 https://doi.org/10.1007/s00300-002-0419-2 |
id |
ftunivnantes:oai:HAL:hal-00191976v1 |
---|---|
record_format |
openpolar |
spelling |
ftunivnantes:oai:HAL:hal-00191976v1 2023-05-15T13:37:48+02:00 Summer diet of king penguins (Aptenodytes patagonicus) at the Falkland Islands, southern Atlantic Ocean Cherel, Yves Pütz, Klemens Hobson, Keith A. Centre d'Études Biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) Antarctic Research Trust Prairie and Northern Wildlife Research Centre Environment and Climate Change Canada 2002 https://hal.science/hal-00191976 https://doi.org/10.1007/s00300-002-0419-2 en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-002-0419-2 hal-00191976 https://hal.science/hal-00191976 doi:10.1007/s00300-002-0419-2 ISSN: 0722-4060 EISSN: 1432-2056 Polar Biology https://hal.science/hal-00191976 Polar Biology, 2002, 25, pp.898-906. ⟨10.1007/s00300-002-0419-2⟩ [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environmental and Society info:eu-repo/semantics/article Journal articles 2002 ftunivnantes https://doi.org/10.1007/s00300-002-0419-2 2023-02-08T08:15:45Z International audience The diet of king penguins (Aptenodytes patagonicus) brooding chicks was investigated during February 2001 at the Falkland Islands, where a small but increasing population is located at the limit of the breeding range of this species. Fish was the most important food source by number (98.0%) and reconstituted mass (97.8%), squids accounting for the remainder. Myctophid fishes represented the main part of the diet (97.7% by number and 96.6% by reconstituted mass), Protomyctophum choriodon being by far the main prey item (84.2% and 88.1%, respectively). Four other myctophids and one squid species each contributed to more than 1% of the diet by number: Krefftichthys anderssoni (4.8%), Electrona carlsbergi (4.6%), Gymnoscopelus nicholsi (2.2%) and Protomyctophum tenisoni (1.8%), together with small juveniles of Gonatus antarcticus (1.8%). Twelve squid species were identified from accumulated lower beaks, including the ommastrephid Martialia hyadesi (48.3% by number), the onychoteuthids Moroteuthis ingens (15.6%), Kondakovia longimana (10.5%) and Moroteuthis knipovitchi (7.3%), and Gonatus antarcticus (9.2%). The stable-carbon and stable-nitrogen isotopic composition of chick food and adult blood differed in a way that suggests that, during the same trip, adult birds fed for themselves in distant foraging grounds, and fed for their chicks on their way back to the colony. The study emphasizes that king penguins are specialist myctophid eaters throughout their breeding range in summer, and highlights the importance of Protomyctophum choriodon as a link between zooplankton and top predators in the pelagic ecosystem of the southwestern Atlantic Ocean. Article in Journal/Newspaper Antarc* antarcticus King Penguins Polar Biology Université de Nantes: HAL-UNIV-NANTES Polar Biology 25 12 898 906 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
[SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environmental and Society |
spellingShingle |
[SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environmental and Society Cherel, Yves Pütz, Klemens Hobson, Keith A. Summer diet of king penguins (Aptenodytes patagonicus) at the Falkland Islands, southern Atlantic Ocean |
topic_facet |
[SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environmental and Society |
description |
International audience The diet of king penguins (Aptenodytes patagonicus) brooding chicks was investigated during February 2001 at the Falkland Islands, where a small but increasing population is located at the limit of the breeding range of this species. Fish was the most important food source by number (98.0%) and reconstituted mass (97.8%), squids accounting for the remainder. Myctophid fishes represented the main part of the diet (97.7% by number and 96.6% by reconstituted mass), Protomyctophum choriodon being by far the main prey item (84.2% and 88.1%, respectively). Four other myctophids and one squid species each contributed to more than 1% of the diet by number: Krefftichthys anderssoni (4.8%), Electrona carlsbergi (4.6%), Gymnoscopelus nicholsi (2.2%) and Protomyctophum tenisoni (1.8%), together with small juveniles of Gonatus antarcticus (1.8%). Twelve squid species were identified from accumulated lower beaks, including the ommastrephid Martialia hyadesi (48.3% by number), the onychoteuthids Moroteuthis ingens (15.6%), Kondakovia longimana (10.5%) and Moroteuthis knipovitchi (7.3%), and Gonatus antarcticus (9.2%). The stable-carbon and stable-nitrogen isotopic composition of chick food and adult blood differed in a way that suggests that, during the same trip, adult birds fed for themselves in distant foraging grounds, and fed for their chicks on their way back to the colony. The study emphasizes that king penguins are specialist myctophid eaters throughout their breeding range in summer, and highlights the importance of Protomyctophum choriodon as a link between zooplankton and top predators in the pelagic ecosystem of the southwestern Atlantic Ocean. |
author2 |
Centre d'Études Biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) Antarctic Research Trust Prairie and Northern Wildlife Research Centre Environment and Climate Change Canada |
format |
Article in Journal/Newspaper |
author |
Cherel, Yves Pütz, Klemens Hobson, Keith A. |
author_facet |
Cherel, Yves Pütz, Klemens Hobson, Keith A. |
author_sort |
Cherel, Yves |
title |
Summer diet of king penguins (Aptenodytes patagonicus) at the Falkland Islands, southern Atlantic Ocean |
title_short |
Summer diet of king penguins (Aptenodytes patagonicus) at the Falkland Islands, southern Atlantic Ocean |
title_full |
Summer diet of king penguins (Aptenodytes patagonicus) at the Falkland Islands, southern Atlantic Ocean |
title_fullStr |
Summer diet of king penguins (Aptenodytes patagonicus) at the Falkland Islands, southern Atlantic Ocean |
title_full_unstemmed |
Summer diet of king penguins (Aptenodytes patagonicus) at the Falkland Islands, southern Atlantic Ocean |
title_sort |
summer diet of king penguins (aptenodytes patagonicus) at the falkland islands, southern atlantic ocean |
publisher |
HAL CCSD |
publishDate |
2002 |
url |
https://hal.science/hal-00191976 https://doi.org/10.1007/s00300-002-0419-2 |
genre |
Antarc* antarcticus King Penguins Polar Biology |
genre_facet |
Antarc* antarcticus King Penguins Polar Biology |
op_source |
ISSN: 0722-4060 EISSN: 1432-2056 Polar Biology https://hal.science/hal-00191976 Polar Biology, 2002, 25, pp.898-906. ⟨10.1007/s00300-002-0419-2⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-002-0419-2 hal-00191976 https://hal.science/hal-00191976 doi:10.1007/s00300-002-0419-2 |
op_doi |
https://doi.org/10.1007/s00300-002-0419-2 |
container_title |
Polar Biology |
container_volume |
25 |
container_issue |
12 |
container_start_page |
898 |
op_container_end_page |
906 |
_version_ |
1766097834719838208 |