An Experimental Analysis and Integrated Evaluation of Various Factors Involved in the Host Plant Specificity of the Cucumber Looper, Anadevidia peponis(FABRICIUS) (Lepidoptera : Noctuidae)

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The host plant specificity of the cucumber looper, Anadevidia pepnis (FABRICIUS), which is harmful to most cucurbitaceous plants, was analyzed experimentally by examining its responses to 27 species of the host and non-host plants in six steps in its host selection, i.e., oviposition of the adult, orientation, biting, feeding and staying of the newly-hatched larva, and nutritional suitability of the plants for its development. The cucurbitaceous host plants were all acceptable with the factors in these steps. Gynostemma, a cucurbitaceous non-host plant, was found to have a powerful feeding deterrent(s) and no oviposition-promotive factor. Non-cucurbitaceous paulownia, which is occasionally attacked by the insect, was an exception in eliciting all positive responses.Oviposition was promoted also by moisture even if the characteristic factors of host plant were completely absent. Some non-host plants represented by cabbage, elicited its positive reactions in every step but in oviposition. The fact that a few larvae of A. peponis have occasionally been found on cabbage farm suggests that cabbage becomes a temporary host when the larvae contact with the plant in some way. Many other test plants appeared not to become the hosts because they possess one or more negative factors against the host selection of the insect.
日本応用動物昆虫学会の論文
1975-12-25