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Begging affects parental effort in the Pied flycatcher, Ficedula hypoleuca

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

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.

Nyckelord

  • Biological Sciences
  • Ecology
  • Begging
  • Parental provisioning
  • Parent-provisioning
  • Parent-offspring conflict
  • Pied flycatcher
  • Ficedula hypoleuca

Övriga

Published
  • ISSN: 1432-0762

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