チャバネゴキブリ生息密度調査を行うための粘着式トラップ設置法の検討

概要

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A study was conducted to investigate the proper method of placing sticky trap for estimating the population of cockroaches in areas inappropriate for ordinary horizontal placement of the trap on the floor. When the trap was leaned vertically against the wall, 79.7% of captured cockroaches were found in the lower part of the trap less than 10cm from the floor. The result suggested that most cockroaches reach the trap not from the surrounding wall surface but from the floor. It was also found that a good number of cockroaches were captured, provided that environmental conditions were adequate for their living, even when the trap was placed horizontally in an area 250cm above the floor. Existence of roach spots could be a good sign for estimating the locations of infested areas with large populations of cockroaches.
2007-10-15