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dc.contributor.author
Tella, Jose Luis
dc.contributor.author
Forero, M.G.
dc.contributor.author
Bertellotti, Néstor Marcelo
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dc.contributor.author
Donázar, J.A.
dc.contributor.author
Blanco, G.
dc.contributor.author
Ceballos, O.
dc.date.available
2020-03-13T14:35:27Z
dc.date.issued
2001-03
dc.identifier.citation
Tella, Jose Luis; Forero, M.G.; Bertellotti, Néstor Marcelo; Donázar, J.A.; Blanco, G.; et al.; Offspring body condition and immunocompetence are negatively affected by high breeding densities in a colonial seabird: A multiscale approach; The Royal Society; Proceedings of the Royal Society of London. Series B: Biological Sciences; 268; 1475; 3-2001; 1455-1461
dc.identifier.issn
0962-8452
dc.identifier.uri
http://hdl.handle.net/11336/99456
dc.description.abstract
Why avian colonies vary in size and how food competition among nearby colonies affects offspring quality are still not completely understood. We simultaneously examined the effects of four scales of breeding density on two measures of offspring viability (body condition and T-cell-mediated immunity) in the colonial Magellanic penguin. Body condition of fledglings was inversely correlated with breeding density within 100 m2 of nests, and decreased with increasing numbers of breeding pairs competing within the parental foraging ranges (100 km), probably as a result of density-dependent food depletion. The T-cell-mediated immune response was positively correlated with body condition, reflecting, to some extent, the previous breeding-density effects, and was negatively correlated with colony size, which may be related to social stress. However, given the effect of protein intake on cell immunity, this result could also indicate a thus far neglected cost of coloniality, namely the consumption of low-protein food to compensate for the depletion of optimal prey. These results were not influenced by other traits, nor by the current exposure of birds to parasites and diseases, as measured by serological variables. Since body condition and the T-cell-mediated immune response of fledgling birds are indicators of their survival and recruitment prospects, the costs we have identified can explain variability in colony size in relation to food competition with surrounding colonies, as well as the skewed distribution toward small colonies in this species.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
The Royal Society
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
BODY CONDITION
dc.subject
BREEDING DENSITY
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COLONIALITY
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IMMUNOCOMPETENCE
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MAGELLANIC PENGUIN
dc.subject.classification
Ecología
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Offspring body condition and immunocompetence are negatively affected by high breeding densities in a colonial seabird: A multiscale approach
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-02-11T17:52:41Z
dc.journal.volume
268
dc.journal.number
1475
dc.journal.pagination
1455-1461
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Londres
dc.description.fil
Fil: Tella, Jose Luis. Consejo Superior de Investigaciones Científicas. Estación Biológica de Doñana; España
dc.description.fil
Fil: Forero, M.G.. University of Saskatchewan; Canadá
dc.description.fil
Fil: Bertellotti, Néstor Marcelo. Consejo Superior de Investigaciones Científicas. Estación Biológica de Doñana; España. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
dc.description.fil
Fil: Donázar, J.A.. Consejo Superior de Investigaciones Científicas. Estación Biológica de Doñana; España
dc.description.fil
Fil: Blanco, G.. Consejo Superior de Investigaciones Científicas. Instituto de Ciencia y Tecnologia de Alimentos y Nutrición; España
dc.description.fil
Fil: Ceballos, O.. Grupo de Estudios Biológicos Ugarra; España
dc.journal.title
Proceedings of the Royal Society of London. Series B: Biological Sciences
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1098/rspb.2001.1688
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://royalsocietypublishing.org/doi/10.1098/rspb.2001.1688
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