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Some factors that affect the annual cycle of the winter moth, operophtera brumata (l.) (lepidoptera: geometridae) in western europe
- WYLIE, H.G.
- Entomologia experimentalis et applicata 1960 v.3 no.2 pp. 93-102
- Operophtera brumata, altitude, eggs, pupae, pupal development, temperature, Europe, Western European region
- Egg development rate in the winter moth (Operophtera brumata (L.)) is increased by higher temperatures between at least 6.0° C and 18° C. Pupal development rate is, in general, reduced by higher temperatures. Therefore, lower temperatures in northern localities and at high altitudes in Europe increase the duration of the egg stage and decrease that of the pupa. Inherent differences in the eggs and pupae from different localities increase the effect of temperature differences.