Use of a new model to quantify compromises between embryo development and parental self-maintenance in three species of intermittently incubating passerines

Margaret A. Voss, F. Reed Hainsworth, Susan N. Ellis-Felege

Research output: Contribution to journalArticle

8 Scopus citations


1.Instead of just times to cool (tcool) and heat (theat), intermittent incubation cycles contain a period (tequil) when eggs are kept at relatively high equilibrium temperatures after heating.2.Relative allocations favoring parental self-maintenance [when (tcool+theat)>tequil] versus embryo development [when (tcool+theat)<tequil] were measured for house wrens (Troglodytes aedon), tree swallows (Tachycineta bicolor) and black-capped chickadees (Poecile atricapillus).3.Wrens showed over-all significant relative allocation to parental self-maintenance, while chickadees and swallows balanced both functions.4.House wrens gradually shifted allocation toward increased average egg temperature as incubation progressed, calling into question how temperature influences development rate.

Original languageEnglish (US)
Pages (from-to)453-460
Number of pages8
JournalJournal of Thermal Biology
Issue number6
StatePublished - Aug 1 2006



  • Average egg temperature
  • Development
  • Incubation
  • Parental self-maintenance
  • Time allocations
  • Trade-offs

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Physiology

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