Abstract
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 language | English (US) |
---|---|
Pages (from-to) | 453-460 |
Number of pages | 8 |
Journal | Journal of Thermal Biology |
Volume | 31 |
Issue number | 6 |
DOIs | |
State | Published - Aug 2006 |
Keywords
- Average egg temperature
- Development
- Incubation
- Parental self-maintenance
- Time allocations
- Trade-offs
ASJC Scopus subject areas
- Biochemistry
- Physiology
- General Agricultural and Biological Sciences
- Developmental Biology