Pest control in natural and man-made forests in northern Japan

Natural enemies and life-history traits were studied for the control of Choristoneura jezoensis Yasuda et Suzuki, Dendrolimus superans (Butler) and Lymantria dispar (L.) in Hokkaido, northern Japan. Outbreaks of the todo-fir budworm, C. jezoensis, occurred during 1965–1975 in plantations of Abies sa...

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Bibliographic Details
Published in:Forest ecology and management 1991, Vol.39 (1), p.55-64
Main Author: Higashiura, Yasutomo
Format: Article
Language:English
Subjects:
ABIES SACHALINENSIS
BOSQUES VIRGENES
CHORISTONEURA
CICLO VITAL
CYCLE DE DEVELOPPEMENT
DENDROLIMUS
Dendrolimus superans
ENEMIGOS NATURALES
ENNEMI NATUREL
FOREST PLANTATIONS
FORET VIERGE
INTEGRATED CONTROL
JAPAN
JAPON
Lasiocampidae
Lepidoptera
LIFE CYCLE
LUCHA INTEGRADA
LUTTE INTEGREE
LYMANTRIA DISPAR
Lymantriidae
NATURAL ENEMIES
PLANTACION FORESTAL
PLANTATION FORESTIERE
Tortricidae
VIRGIN FORESTS
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Summary:Natural enemies and life-history traits were studied for the control of Choristoneura jezoensis Yasuda et Suzuki, Dendrolimus superans (Butler) and Lymantria dispar (L.) in Hokkaido, northern Japan. Outbreaks of the todo-fir budworm, C. jezoensis, occurred during 1965–1975 in plantations of Abies sachalinensis Masters. The population in natural forests, however, remained at low levels during this period. Natural mixed forests were preferred to man-made forests for controlling pests. I present control methods utilizing life-history traits of the pests. The hemlock caterpillar, D. superans, overwinters in the soil in its larval stage. To control the pest, every tree trunk was banded with vinyl tape to impede larvae crawling up to the canopy. Another method is for the gypsy moth, L. dispar. In Hokkaido the female oviposit below the branch. Higher egg-masses suffered greater predation by birds. This predation was increased by pruning of the lower branches.
ISSN:0378-1127
1872-7042
DOI:10.1016/0378-1127(91)90162-O