A study on phototaxis for adult Chironomidae (Diptera) by artificial light in Lake Suwa : 2. Effect of the light trap intensity and interval of electric collecting-killing insect traps using near-ultraviolet radiation

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  • HIRABAYASHI Kimio
    Department of Hygiene, Shinshu University School of Medicine:(Present address)Liberal Arts, Yamanashi Women's College
  • NAKAZATO Ryoji
    Faculty of Science, Suwa Hydrobiological Station, Shinshu University
  • OHARA Akio
    Toshiba Lighting & Technology Co.
  • OKINO Tokio
    Faculty of Science, Suwa Hydrobiological Station, Shinshu University

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Other Title
  • 野外における人工光源を用いたユスリカ成虫の走光性に関する研究 : 2. 効率的な電撃殺虫器の設置距離ならびに誘引光源の強さに関する実験
  • 野外における人工光源を用いたユスリカ成虫の走光性に関する研究-2-効率的な電撃殺虫器の設置距離ならびに誘引光源の強さに関する実験〔英文〕
  • ヤガイ ニ オケル ジンコウ コウゲン オ モチイタ ユスリカ セイチュウ ノ

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In order to control the adult midges, Tokunagayusurika akamusi, the present study was made on the efficient capture of adult midges using ten electric collecting-killing insect traps with BL (black light)-lamps in the field. The traps captured 13,006±11,834 (mean±S.D.) ind./day on average. The number of midges per trap tended to decrease with the number of lit traps but increased with the number of lit BL-lamps. When the traps with four BL-lamps were placed at 20-30m intervals, the most economical and effective capture was obtained. However, huge numbers of adult midges were attracted, stuck to and completely covered the electric grid of the trap, thereby causing the capture efficiency to deteriorate.

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