Corticosterone triggers high-pitched nestlings' begging calls and affects parental behavior in the wild zebra finch

Emile Perez, Mylene Mariette, Précillia Cochard, Christophe O. Soulage, Simon Griffith, Clementine Vignal

Research output: Contribution to journalArticlepeer-review

Abstract

Nestlings beg to parents to communicate their need. Nevertheless, the specific signal driving parental care remains only partially understood. No study to date has been able to link a specific change in the physiological state of the young with, on the one hand, the modulation of a precise component of its begging behavior and, on the other hand, a direct modification of parental behavior reflecting an adjustment to an appropriate level of care. Here we orally administrated either exogenous corticosterone or a peanut oil control to free-living zebra finch nestlings and recorded begging behavior directly after treatment. Using a continuous automated monitoring system to record parental behavior in the wild, we simultaneously monitored the rate and duration of parental nest visits and foraging behavior at artificial feeders during 6 days posttreatment. We show that corticosterone modified the begging calls' spectrum. Parents of corticosterone-treated broods spent more time in the nest and in feeders, and their older nestlings gained more body mass. Begging calls thus show a corticosterone-driven flexibility, which may inform parents of nestlings' physiological state and allow them to provide an appropriate level of care.

Original languageEnglish
Pages (from-to)1665-1675
Number of pages11
JournalBehavioral Ecology
Volume27
Issue number6
DOIs
Publication statusPublished - 2016

Keywords

  • acoustic signaling
  • call spectrum
  • hormone
  • nestling provisioning
  • parental care
  • stress response
  • IN-HOUSE SPARROWS
  • TITS PARUS-MAJOR
  • TAENIOPYGIA-GUTTATA
  • OFFSPRING CONFLICT
  • REPRODUCTIVE SUCCESS
  • ENERGY HOMEOSTASIS
  • POSTNATAL EXPOSURE
  • FORAGING BEHAVIOR
  • LEGGED KITTIWAKE
  • BODY CONDITION

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