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dc.contributor.author
Blanco, Gabriela Silvina
dc.contributor.author
Gallo, Luciana
dc.contributor.author
Pisoni, Juan Pablo
dc.contributor.author
Dell´Omo, G.
dc.contributor.author
Gerez, N. A.
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Molina, G.
dc.contributor.author
Quintana, Flavio Roberto
dc.date.available
2022-09-16T15:10:09Z
dc.date.issued
2022-01
dc.identifier.citation
Blanco, Gabriela Silvina; Gallo, Luciana; Pisoni, Juan Pablo; Dell´Omo, G.; Gerez, N. A.; et al.; At-sea distribution, movements and diving behavior of Magellanic penguins reflect small-scale changes in oceanographic conditions around the colony; Springer; Marine Biology; 169; 2; 1-2022; 1-13
dc.identifier.issn
0025-3162
dc.identifier.uri
http://hdl.handle.net/11336/169107
dc.description.abstract
Penguins are highly specialized divers that are expected to reflect environmental variation by adjusting their foraging behavior. We performed a comprehensive analysis of the at-sea distribution, diving, and foraging performance of Magellanic penguins (Spheniscus magellanicus) during the early chick-rearing period over two consecutive breeding seasons. The study was conducted at Cabo dos Bahías, (44° 54′ 50″ S; 65° 32′ 37″ W) a breeding colony located south of the latitudinal range of penguins’ main prey item Argentine anchovies (Engraulis anchoita). We also linked penguin foraging behavior to sea surface temperature (SST) to examine how birds cope with differences in oceanographic conditions. For this, we instrumented 37 adult penguins (18 in 2015 and 19 in 2016) with data loggers. In addition, we recorded chick growth in body mass during the first 12 days of life. Overall, the diving patterns of adult Magellanic penguins were similar in both breeding seasons. However, during 2015, adult breeders spent more time at the sea surface between foraging dives and performed more foraging dives per hour. The time spent foraging was higher in 2016 than in 2015. Foraging penguins also expanded their foraging range more than 100 km during 2016. Temperature records gathered by diving penguins during 2016 showed significantly higher temperatures, both at the sea surface as well as at the bottom of dives. Adults performed a higher foraging effort and chicks gained weight faster during 2016. Site-specific variability in prey distribution and abundance may be responsible for inter-seasonal discrepancies in the foraging and diving patterns. We reasoned that any environmental change could cause a shift in the distribution of anchovies, which would change the foraging behavior of penguins as they attempted to optimize their chick growth. Penguins from Cabo dos Bahías appear to face this environmental challenge with a highly sensitive at-sea foraging performance by increasing foraging effort when necessary.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
FORAGING BEHAVIOR
dc.subject
MAGELLANIC PENGUINS
dc.subject
PELAGIC ECOLOGY
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SEA SURFACE TEMPERATURE
dc.subject.classification
Otras Ciencias Naturales y Exactas
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Otras Ciencias Naturales y Exactas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
At-sea distribution, movements and diving behavior of Magellanic penguins reflect small-scale changes in oceanographic conditions around the colony
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-09-15T14:50:03Z
dc.journal.volume
169
dc.journal.number
2
dc.journal.pagination
1-13
dc.journal.pais
Alemania
dc.journal.ciudad
Berlin
dc.description.fil
Fil: Blanco, Gabriela Silvina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto de Biología de Organismos Marinos; Argentina
dc.description.fil
Fil: Gallo, Luciana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto de Biología de Organismos Marinos; Argentina
dc.description.fil
Fil: Pisoni, Juan Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina
dc.description.fil
Fil: Dell´Omo, G.. Ornis Italica; Italia
dc.description.fil
Fil: Gerez, N. A.. Universidad Nacional de la Patagonia. Facultad de Ciencias Naturales. Sede Puerto Madryn; Argentina
dc.description.fil
Fil: Molina, G.. Universidad del Mar; México
dc.description.fil
Fil: Quintana, Flavio Roberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto de Biología de Organismos Marinos; Argentina
dc.journal.title
Marine Biology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/10.1007/s00227-021-04016-5
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s00227-021-04016-5
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