✦ LIBER ✦
Use of a new model to quantify compromises between embryo development and parental self-maintenance in three species of intermittently incubating passerines
✍ Scribed by Margaret A. Voss; F. Reed Hainsworth; Susan N. Ellis-Felege
- Publisher
- Elsevier Science
- Year
- 2006
- Tongue
- English
- Weight
- 200 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0306-4565
No coin nor oath required. For personal study only.
✦ Synopsis
- Instead of just times to cool (t cool ) and heat (t heat ), intermittent incubation cycles contain a period (t equil ) when eggs are kept at relatively high equilibrium temperatures after heating. 2. Relative allocations favoring parental self-maintenance [when (t cool +t heat )4t equil ] versus embryo development [when (t cool +t heat )
ot equil ] 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.