ヒラタキクイムシLyctus brunneus Stephens の選択産卵,特に炭水化物の及ぼす影響

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  • Observations on the Selective Oviposition of <i>Lyctus brunneus</i> STEPHEN with Reference to the Influence of Carbohydrates
  • ヒラタキクイムシ<i>Lyctus brunneus</i> STEPHENSの選択産卵,特に炭水化物の及ぼす影響
  • ヒラタキクイムシ Lyctus brunneus Stephens ノ センタ

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The carbohydrates, starch, glucose, and sucrose affected the selective oviposition of L. brunneus. The female adults laid most of the eggs in veneer blocks treated with carbohydrates. Among treatments of glucose, starch, and a mixture of both carbohydrates, the last was the most suitable for stimulation of oviposition. Since few differences in influence on oviposition between glucose and starch were observed, it was concluded that soluble sugars (glucose, sucrose, etc.) were very important substances for selective oviposition, in addition to starch. There was a positive relationship (n=35, r2=0.76) between the number of the ‘tasting mark’ and that of eggs laid. Although the female adults laid most of the eggs in the veneer blocks through natural pores of wood vessels, the females laid a few eggs through the pores (‘tasting mark’) opened by themselves. Therefore, it was presumed that making the mark included the function of admitting the ovipositor.

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