We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Consequences of defoliation on phenological interaction between Epirrita autumnata and its host plant, mountain birch
- Authors
Ruohomaki, K.; Haukioja, E.; Kaitaniemi, P.
- Abstract
1. Defoliation-induced changes in the budbreak phenology of MountainBirches (Betula pubescens ssp. tortuosa (Ledeb.) Nyman), and their effects on herbivore performance, were investigated during an outbreakof the spring-feeding geometrid, Epirrita autumnata (Bkh.). 2. Totaldefoliation (followed by refoliation) by E. autumnata larvae was required to achieve significant delaying of budbreak of Mountain Birch one year after damage. 3. Delayed budbreak has potentially deleteriouseffects on herbivore performance. However, E. autumnata larvae show phenotypic responses that increase the synchrony between larvae and leaves: high larval density, a prerequisite for severe defoliation, delays egg hatch in the following year. 4. Late hatching larvae performed as well on birches with delayed budbreak due to the previous year's total defoliation as did early hatching larvae on birches with earlier budbreak.
- Subjects
DEFOLIATION
- Publication
Functional Ecology, 1997, Vol 11, Issue 2, p199
- ISSN
0269-8463
- Publication type
Article