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Begging affects parental effort in the Pied flycatcher, Ficedula hypoleuca

Publiceringsår: 1997
Språk: Engelska
Sidor: 381-384
Publikation/Tidskrift/Serie: Behavioural Ecology and Sociobiology
Volym: 41
Nummer: 6
Dokumenttyp: Artikel
Förlag: Springer-Verlag

Sammanfattning

It has been suggested that nestlings use begging to increase their share of parental resources at the expense of current or future siblings. There is ample evidence that siblings compete over food with nestmates by begging, but only short-term effects of begging on parental provisioning rates have been shown. In this study, we use a new experimental design to demonstrate that pied flycatcher (Ficedula hypoleuca) nestlings that beg more are able to increase parental provisioning rates over the major part of the nestling period, thus potentially competing with future siblings. Parents were marked with microchips so that additional begging sounds could be played back when one of the parents visited the nest. By playing back begging sounds consistently at either male or female visits, a sex difference in
provisioning rate that lasted for the major part of the nestling period was induced. If each parent independently adjusts its effort to the begging intensity of nestlings, begging may also be the proximate control
mechanism for the sexual division of labour.

Disputation

Nyckelord

  • Biology and Life Sciences
  • Begging
  • Parental provisioning
  • Parent-provisioning
  • Parent-offspring conflict
  • Pied flycatcher
  • Ficedula hypoleuca

Övriga

Published
Yes
  • ISSN: 0340-5443 (Print)
  • ISSN: 1432-0762 (Online)

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