ヤサイゾウムシの加害植物

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タイトル別名
  • The Food Plant List of the Vegetable Weevil, <i>Listroderes costirostris obliquus</i> KLUG
  • ヤサイゾウムシ ノ カガイ ショクブツ

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There are many reports on food plants of the vegetable weevil, Listroderes costirostris obliquus KLUG. However, there is no complete list hitherto in which food plants are classified into families. In order to obtain a basic knowledge of food habit in this insect, the author collected the records of food plants and arranged them in two tables (Table 1 & 2). The survey of literatures pertaining to this list was concluded in March, 1961. The importance of the publication of such a list for plant protection needs no emphasis. The list indicates the following characteristics of food habit in this insect.<br>1) The food plants of the vegetable weevil amounted to total of over 34 plant families, 178 species (including varieties). In Japan, 26 families 97 species (including varieties) were reported.<br>2) All of these food plant families belong to Dicotyledon, with only one exception of Liliaceae.<br>3) In the list, Compositae takes rank as the first in number of species (including varieties), Cruciferae as the second, and Umbelliferae as the third, followed by Caryophyllaceae, Leguminosae, Polygonaceae, and Solanaceae.<br>4) If the plants which were recorded as food only by experiments are excluded, Compositae still ranks first, Cruciferae second, and Umbelliferae third, followed by Solanaceae, Leguminosae, Caryophyllaceae, etc.<br>5) 19 families 66 species of the food plants are wild plants, while 8 families 13 species are ornamental plants, and 12 families 56 species field crops. In wild plants Compositae takes the first rank, and in field crops Cruciferae.<br>6) In comparison of report frequencies represented by the number of prefectures from which the damages of particular field crop were reported in Japan, the top is Cruciferae, the second is Umbelliferae, the third is Solanaceae, Chenopodiaceae, and the fourth is Compositae.<br>7) It may be concluded, at least in regare to number of food plants and report frequencies, that Cruciferae, Compositae, Umbelliferae, and Solanaceae are important food plants of the vegetable weevil. In fact, these plant families contain the plants which are severely damaged by this insect.

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