Effects of extrapair paternity and sex on nestling growth and condition in the collared flycatcher, Ficedula albicollis

B. Rosivall, E. Szöllősi, Dennis Hasselquist, J. Török

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

Extrapair fertilizations (EPFs) have been found in most socially monogamous passerine species. EPFs are generally beneficial for males because they increase the number of sired offspring. The benefit accrued by females, however, is less obvious. Maternal benefits may involve fertility insurance, increased genetic variability of the offspring, and improved offspring quality via compatible genes or 'good genes'. In a Hungarian population of the collared flycatcher, we investigated whether the occurrence of extrapair young (EPY) in a brood could be predicted by the traits of the females or their social mates, and whether EPY were superior to their half sibs in terms of growth and fledging condition. We found that 55.7% of the broods contained EPY. The females' participation in extrapair copulations (EPCs) was not related to any of the characteristics of their mates (body size, condition, wing and forehead patch size). The EPY did not differ from their half sibs in any measures of offspring quality. The half sibs had similar embryonic and postembryonic growth and fledged with similar body condition. Female body size was related to extrapair paternity: larger females were less likely to produce mixed-paternity broods. This suggests that the role of female traits in EPCs deserves more attention. We also found that male nestlings grew faster than females, although females could catch up by the time of fledging, so we argue that sex-dependent development should be taken into account in studies using nestling growth as a measure of nestling quality.

Original languageEnglish
Pages (from-to)611-617
Number of pages7
JournalAnimal Behaviour
Volume77
Issue number3
DOIs
Publication statusPublished - Mar 2009

Fingerprint

paternity
nestling
gender
fledging
copulation
fertilization (reproduction)
body size
effect
Ficedula albicollis
nestlings
gene
patch size
insurance
passerine
body condition
fertility
genes
genetic variation
young

Keywords

  • collared flycatcher
  • Ficedula albicollis
  • fledging size
  • nestling development
  • parental quality
  • paternity
  • sex differences

ASJC Scopus subject areas

  • Animal Science and Zoology
  • Ecology, Evolution, Behavior and Systematics

Cite this

Effects of extrapair paternity and sex on nestling growth and condition in the collared flycatcher, Ficedula albicollis. / Rosivall, B.; Szöllősi, E.; Hasselquist, Dennis; Török, J.

In: Animal Behaviour, Vol. 77, No. 3, 03.2009, p. 611-617.

Research output: Contribution to journalArticle

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