新しいゴキブリ忌避効力評価法および天然精油のチャバネゴキブリに対する忌避性

DOI NDLデジタルコレクション 日本農学文献記事索引 Web Site Web Site 被引用文献2件

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  • New Methods of Evaluation for Cockroach Repellents and Repellency of Essential Oils against German Cockroach (<i>Blattella germanica</i> L.)
  • アタラシイ ゴキブリ キヒ コウリョク ヒョウカホウ オヨビ テンネン セイユ

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Two new techniques to evaluate repellency against the German cockroach (Blattella germanica L.) were devised, a test tube method and a beaker method. The former estimates the repellent impact on a roach attracted by roach excrement on a paper filter. The latter, estimating effectiveness by changes in the number of roaches in a beaker, is an excellent method for evaluating olfactory repellency. Among the reference compounds, α-naphthoquinone, 2-hydroxyethyl-n-octylsulfide and naphthalene were effective in the test tube method, however their 2% sublimates were not effective in the beaker method. Those compounds were thus not judged as promising olfactory repellents. The oils of Japanese mint (Mentha arvensis) and spearment (native and Scotch type, Mentha specata) were the most effective among 92 such substances. Strong mosquito repellents such as oils of citronella, lavender, rosemary, and penny royal had little or no effect against the cockroach.

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