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Ferretti, V.; Llambías, P.E.; Martin, T.E. "Life-history variation of a neotropical thrush challenges food limitation theory" (2005) Proceedings of the Royal Society B: Biological Sciences. 272(1564):769-773
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Abstract:

Since David Lack first proposed that birds rear as many young as they can nourish, food limitation has been accepted as the primary explanation for variation in clutch size and other life-history traits in birds. The importance of food limitation in life-history variation, however, was recently questioned on theoretical grounds. Here, we show that clutch size differences between two populations of a neotropical thrush were contrary to expectations under Lack's food limitation hypothesis. Larger clutch sizes were found in a population with higher nestling starvation rate (i.e. greater food limitation). We experimentally equalized clutches between populations to verify this difference in food limitation. Our experiment confirmed greater food limitation in the population with larger mean clutch size. In addition, incubation bout length and nestling growth rate were also contrary to predictions of food limitation theory. Our results demonstrate the inability of food limitation to explain differences in several life-history traits: clutch size, incubation behaviour, parental feeding rate and nestling growth rate. These life-history traits were better explained by inter-population differences in nest predation rates. Food limitation may be less important to life history evolution in birds than suggested by traditional theory. © 2005 The Royal Society.

Registro:

Documento: Artículo
Título:Life-history variation of a neotropical thrush challenges food limitation theory
Autor:Ferretti, V.; Llambías, P.E.; Martin, T.E.
Filiación:Departamento de Ecologia, Genética y Evolución, Universidad de Buenos Aires, Buenos Aires, Argentina
USGS Biological Resources Discipline, Montana Cooperative Wildlife Research Unit, University of Montana, Missoula, MT 59812, United States
Department of Ecology and Evolutionary Biology, Corson Hall, Cornell University, Ithaca, NY 14853-2701, United States
Palabras clave:Clutch size; Food limitation; Life-history traits; Nest predation; Parental behaviour; Rufous-bellied thrush; clutch size; food limitation; life history; parental care; passerine; animal behavior; article; bird; clutch size; evolution; food availability; life history; Neotropics; nest predation; nonhuman; priority journal; adaptation; analysis of variance; animal; animal food; Argentina; comparative study; feeding behavior; growth, development and aging; morphometrics; physiology; reproduction; songbird; videorecording; Aves; Adaptation, Physiological; Analysis of Variance; Animal Nutrition Physiology; Animals; Argentina; Body Weights and Measures; Feeding Behavior; Reproduction; Songbirds; Video Recording
Año:2005
Volumen:272
Número:1564
Página de inicio:769
Página de fin:773
DOI: http://dx.doi.org/10.1098/rspb.2004.3039
Título revista:Proceedings of the Royal Society B: Biological Sciences
Título revista abreviado:Proc. R. Soc. B Biol. Sci.
ISSN:09628452
CODEN:PRLBA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09628452_v272_n1564_p769_Ferretti

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Citas:

---------- APA ----------
Ferretti, V., Llambías, P.E. & Martin, T.E. (2005) . Life-history variation of a neotropical thrush challenges food limitation theory. Proceedings of the Royal Society B: Biological Sciences, 272(1564), 769-773.
http://dx.doi.org/10.1098/rspb.2004.3039
---------- CHICAGO ----------
Ferretti, V., Llambías, P.E., Martin, T.E. "Life-history variation of a neotropical thrush challenges food limitation theory" . Proceedings of the Royal Society B: Biological Sciences 272, no. 1564 (2005) : 769-773.
http://dx.doi.org/10.1098/rspb.2004.3039
---------- MLA ----------
Ferretti, V., Llambías, P.E., Martin, T.E. "Life-history variation of a neotropical thrush challenges food limitation theory" . Proceedings of the Royal Society B: Biological Sciences, vol. 272, no. 1564, 2005, pp. 769-773.
http://dx.doi.org/10.1098/rspb.2004.3039
---------- VANCOUVER ----------
Ferretti, V., Llambías, P.E., Martin, T.E. Life-history variation of a neotropical thrush challenges food limitation theory. Proc. R. Soc. B Biol. Sci. 2005;272(1564):769-773.
http://dx.doi.org/10.1098/rspb.2004.3039