丹沢山地におけるブナハバチの大量発生の再発とその食害状況について

概要

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The outbreaks of Fagineura crenativora have occurred in the Tanzawa Mountains three times since 1993 and caused severe defoliations. The adult and larval densities of this species were extremely low in a whole area of the Tanzawa Mountains in 2006. However, those suddenly reached outbreak level and caused serious defoliations to the beech trees in 2007. The most remarkable defoliations were observed from Mt. Hinokihoramaru to Mt. Kanyudou. The severe defoliations were also observed in the western area of the Tanzawa Mountains. The prolonged diapause in the prepupal stage may have affected the sudden occurrence of the outbreak in 2007.
東海大学の論文