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Polar Biology

, Volume 36, Issue 4, pp 529–535 | Cite as

Parental physiological condition and reproductive success in chinstrap penguins (Pygoscelis antarctica)

  • Miguel Ferrer
  • Josabel Belliure
  • Javier Viñuela
  • Beatriz Martin
Original Paper

Abstract

Recent studies suggest that parental resource allocation may be the most important factor explaining differences in reproductive output among parents. That said at least two different hypotheses of balance between parental foraging effort and resource allocation have been proposed. First, parents with high foraging effort have high reproductive success. Second, parents with higher allocation of resources to offspring have high reproductive success. We tested the second hypothesis using chinstrap penguins (Pygoscelis antarctica) as a model. We evaluated nutritional condition of the parents using blood urea, uric acid, creatine kinase, and cholesterol levels. We evaluated reproductive success according to total mass of the brood and asymmetries inside the brood. We measured the degree of asymmetry using weight and culmen length. Generalized linear models were used to examine relationships between adult plasma urea levels with year, nest position, and degree of asymmetry in chicks. Our results demonstrate that lighter broods were more asymmetric and associated with lower values of adult plasma urea, uric acid, and creatine kinase. We interpret these findings as evidence that the birds allocate fewer resources to their chicks than adults with more symmetric broods are.

Keywords

Resource allocation Nutritional condition Urea Uric acid Penguins Antarctica 

Notes

Acknowledgments

The present study was supported by grant ANT91-1264 from the Spanish C.I.C.Y.T. (Plan Nacional Antártico). We gratefully acknowledge the Spanish Navy vessel ‘‘Hesperides’’ for transport to and from Deception Island, the Spanish Army Base ‘‘Gabriel de Castilla’’ and the personnel at Argentine Base for their hospitality and logistic support. Three anonymous referees greatly improved early drafts of this paper. We are indebted to Keith Bildstein for correction of the English text.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Miguel Ferrer
    • 1
  • Josabel Belliure
    • 2
  • Javier Viñuela
    • 3
  • Beatriz Martin
    • 1
  1. 1.Estación Biológica de DoñanaCSICSevilleSpain
  2. 2.Departamento de EcologíaUniversidad de AlcaláAlcalá de Henares, MadridSpain
  3. 3.Instituto de Investigación en Recursos Cinegéticos (IREC)CSIC-UCLM-JCCLMCiudad RealSpain

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