Gone fishing: Adélie penguin site-specific foraging tactics and breeding performance
AbstractThe ecological drivers underlying breeding performance are expected to differ across the geographical range of seabird species, but few studies have compared trade-offs between colonies with different local conditions. During chick-rearing (2000–01), we compared the foraging trips, diet and...
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2020
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Online Access: | https://www.openaccessrepository.it/record/90961 https://doi.org/10.1017/s0954102020000085 |
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ftopenaccessrep:oai:zenodo.org:90961 2023-10-25T01:39:56+02:00 Gone fishing: Adélie penguin site-specific foraging tactics and breeding performance Silvia Olmastroni Francesco Pezzo Niccolò Fattorini Silvano Focardi 2020-02-21 https://www.openaccessrepository.it/record/90961 https://doi.org/10.1017/s0954102020000085 eng eng url:https://www.openaccessrepository.it/communities/itmirror https://www.openaccessrepository.it/record/90961 doi:10.1017/s0954102020000085 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/ NEANIAS Atmospheric Research Community Geology Ecology Evolution Behavior and Systematics Oceanography info:eu-repo/semantics/article publication-article 2020 ftopenaccessrep https://doi.org/10.1017/s0954102020000085 2023-09-26T22:17:13Z AbstractThe ecological drivers underlying breeding performance are expected to differ across the geographical range of seabird species, but few studies have compared trade-offs between colonies with different local conditions. During chick-rearing (2000–01), we compared the foraging trips, diet and breeding parameters of two Adélie penguin colonies in the Ross Sea, at Edmonson Point (EdPo; ~2000 breeding pairs) and Inexpressible Island (InIs; ~24 000 breeding pairs). Penguins from InIs travelled farther and performed longer feeding trips. The quantity of food brought to the nest was the same for the two colonies, but penguins from InIs brought more fish and less krill. Eggs hatched earlier at EdPo. Breeding success did not differ, but chick weight during hatching–fledging was greater at InIs. Despite worse weather conditions at InIs, the larger proportion of high-energy food brought by penguins from InIs (i.e. fish) may explain their offspring's better performance. In addition, the persistence of fast ice at EdPo may have led to greater energy expenditure of breeding individuals, possibly reducing chick growth. The greater intraspecific competition expected at InIs may have been reduced by longer foraging trips and/or counteracted by the more nutritious diet. Our findings reveal complex trade-offs between foraging effort and environmental constraints in determining the breeding performance of Adélie penguins. Article in Journal/Newspaper Inexpressible Island Ross Sea Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository Edmonson Point ENVELOPE(165.133,165.133,-74.333,-74.333) Inexpressible Island ENVELOPE(163.650,163.650,-74.900,-74.900) Ross Sea Antarctic Science 32 3 199 209 |
institution |
Open Polar |
collection |
Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository |
op_collection_id |
ftopenaccessrep |
language |
English |
topic |
NEANIAS Atmospheric Research Community Geology Ecology Evolution Behavior and Systematics Oceanography |
spellingShingle |
NEANIAS Atmospheric Research Community Geology Ecology Evolution Behavior and Systematics Oceanography Silvia Olmastroni Francesco Pezzo Niccolò Fattorini Silvano Focardi Gone fishing: Adélie penguin site-specific foraging tactics and breeding performance |
topic_facet |
NEANIAS Atmospheric Research Community Geology Ecology Evolution Behavior and Systematics Oceanography |
description |
AbstractThe ecological drivers underlying breeding performance are expected to differ across the geographical range of seabird species, but few studies have compared trade-offs between colonies with different local conditions. During chick-rearing (2000–01), we compared the foraging trips, diet and breeding parameters of two Adélie penguin colonies in the Ross Sea, at Edmonson Point (EdPo; ~2000 breeding pairs) and Inexpressible Island (InIs; ~24 000 breeding pairs). Penguins from InIs travelled farther and performed longer feeding trips. The quantity of food brought to the nest was the same for the two colonies, but penguins from InIs brought more fish and less krill. Eggs hatched earlier at EdPo. Breeding success did not differ, but chick weight during hatching–fledging was greater at InIs. Despite worse weather conditions at InIs, the larger proportion of high-energy food brought by penguins from InIs (i.e. fish) may explain their offspring's better performance. In addition, the persistence of fast ice at EdPo may have led to greater energy expenditure of breeding individuals, possibly reducing chick growth. The greater intraspecific competition expected at InIs may have been reduced by longer foraging trips and/or counteracted by the more nutritious diet. Our findings reveal complex trade-offs between foraging effort and environmental constraints in determining the breeding performance of Adélie penguins. |
format |
Article in Journal/Newspaper |
author |
Silvia Olmastroni Francesco Pezzo Niccolò Fattorini Silvano Focardi |
author_facet |
Silvia Olmastroni Francesco Pezzo Niccolò Fattorini Silvano Focardi |
author_sort |
Silvia Olmastroni |
title |
Gone fishing: Adélie penguin site-specific foraging tactics and breeding performance |
title_short |
Gone fishing: Adélie penguin site-specific foraging tactics and breeding performance |
title_full |
Gone fishing: Adélie penguin site-specific foraging tactics and breeding performance |
title_fullStr |
Gone fishing: Adélie penguin site-specific foraging tactics and breeding performance |
title_full_unstemmed |
Gone fishing: Adélie penguin site-specific foraging tactics and breeding performance |
title_sort |
gone fishing: adélie penguin site-specific foraging tactics and breeding performance |
publishDate |
2020 |
url |
https://www.openaccessrepository.it/record/90961 https://doi.org/10.1017/s0954102020000085 |
long_lat |
ENVELOPE(165.133,165.133,-74.333,-74.333) ENVELOPE(163.650,163.650,-74.900,-74.900) |
geographic |
Edmonson Point Inexpressible Island Ross Sea |
geographic_facet |
Edmonson Point Inexpressible Island Ross Sea |
genre |
Inexpressible Island Ross Sea |
genre_facet |
Inexpressible Island Ross Sea |
op_relation |
url:https://www.openaccessrepository.it/communities/itmirror https://www.openaccessrepository.it/record/90961 doi:10.1017/s0954102020000085 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1017/s0954102020000085 |
container_title |
Antarctic Science |
container_volume |
32 |
container_issue |
3 |
container_start_page |
199 |
op_container_end_page |
209 |
_version_ |
1780735554009169920 |