Dispersal and Survival Rate of Adult Females of the Fall Webworm : Hyphantria cunea DRURY (Lepidoptera : Arctiidae) : Using the Nuclear Polyhedrosis Virus as a Marker

概要

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The dispersal and survival rates of adult females of Hyphantria cunea were investigated in the field using the nuclear polyhedrosis virus (NPV) as a marker. The survival rate of adult females until oviposition was estimated to be 31.38 percent. Maximum and minimum distances traversed were 188 and 1.25 m, respectively. Of moths which deposited eggs, 90 and 95 percents were found inside circles with a radius of 37.1 and 70.6 m from the release point, respectively. The females flew less actively within the mulberry field where the adults were released, and once the females flew out of this mulberry field, they flew more actively than they had within the mulberry field. The adult female fight direction was slightly influenced by the wind. Females preferred to oviposit on host plants in thick vegetation. A heavy wing load inhibited long-distance flight by female moths. The new marking method using NPV as a marker can be effectively applied to the species, wich allows for the transovum transmission of pathogen in natural conditions, because of the gregarious habits of the young larvae.
日本応用動物昆虫学会の論文
1981-11-25