Effects of Prey Density on the Rate of Prey Consumption, Development and Survival of Propylea japonica THUNBERG (Coleoptera : Coccinellidae)

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  • ヒメカメノコテントウの捕食率, 発育及び生存に及ぼす餌密度の影響

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Larvae of Propylea japonica THUNBERG were reared on various numbers of the larvae of Macrosiphum avenae akebiae SHINJI to examine the effects of prey density on the number of prey eaten, growth, development and survival of this predacious insect. When receiving eight or more aphids per day, ladybirds emerged as adults with high reproductive potential. When the daily supply of ahids was lower, the larval development was prolonged to compensate for quantitative deficiency of food. When the prey density was still lower, the survival rate was decreased and the emerging adult became small in size. The wasted consumption of food from the viewpoint of population energetics evaluated using an Index proposed by MORISITA (1973).

Journal

  • 昆蟲

    昆蟲 47 (2), 204-212, 1979-06-25

    東京昆蟲學會

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