Baseline corticosterone peaks in shorebirds with maximal energy stores for migration: A general preparatory mechanism for rapid behavioral and metabolic transitions?

T Piersma*, J Reneerkens, M Ramenofsky

*Corresponding author for this work

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Abstract

In captive red knots (Calidris canutus, Scolopacidae) showing a regulated body mass increase of 50% related to their migration from temperate staging sites to tundra:breeding grounds, plasma corticosterone concentrations increased from less than 10 ng.ml(-1) to levels as high-as 30 ng.ml(-1) when the energy storage for migration was complete. These birds did not fly, but concentrations dropped to very low levels (

Original languageEnglish
Pages (from-to)118-126
Number of pages9
JournalGeneral and Comparative Endocrinology
Volume120
Issue number1
DOIs
Publication statusPublished - Oct-2000

Keywords

  • corticosterone
  • environmental unpredictability
  • migration
  • shorebirds
  • stress
  • KNOTS CALIDRIS-CANUTUS
  • ZONOTRICHIA LEUCOPHRYS GAMBELII
  • PASSERINE BIRDS
  • PLASMA-CORTICOSTERONE
  • SYLVIA-BORIN
  • DISTANCE
  • DISPERSAL
  • SPARROWS
  • MIGRANT
  • FLIGHT

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