長野県伊那地方におけるオオニジュウヤホシテントウ群の生態 : I. 野生植物を奇主とする3種個体群のジャガイモに対する受容性の比較

概要

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Three species of Henosepilachna beetles feeding on wild native host plants in fields were reared on cultivated potato plant under laboratory conditions. The rate of increase (=number of newly emerged females produced by an overwintered female) of H.vigintioctomaculata reared on potato was about 6-fold higher than that of the individuals reared on a wild host plant, Scopolia japonica, mainly due to the increase of the number of eggs laid per female. The rate of increase of H. niponica reared on potato was about one-sixth lower than that of the individuals reared on a wild host plant, thistle, due to the decrease of both the number of eggs laid per female and larval survival rate. The rate of increase of H.yasutomii reared on potato was about twofold higher than that of the individuals reared on wild host plants, blue cohosh and S.japonica, due to the increase of the number of eggs laid per female. There were no clear differences in the larval survival rates of H.yasutomii among food plants. Furthermore, the author attempted to determine whether these three wild populations of Henosepilachna beetles were able to switch from wild native plants to cultivated potato.
日本応用動物昆虫学会の論文
1987-08-25