The termiticidal effects of an entomogenous fungus, Metarhizium anisopliae on the Formosan subterranean termite, Coptotermes formosanus was investigated in a laboratory, using a commercial formulation, supplied by Eco Science Co., Ltd. in USA (Formulation name: Bio-Blast^TM). It is the dust formulation, containing M. anisopliae as an active ingredient(>4×10⁹ conidia/g), and is used as a termite control agent in USA.
All the workers treated with 100-10,000 times dilutions of the formulation died within 14 days, and all the workers exposed to the sands treated with 10-0.003% dilutions died within 11 days. When the workers were exposed to the filter paper treated with 100 times dilution for 24 or 4 hrs., a hundred percent of them died within 3 weeks or 4 weeks, respectively. Then, contagious tests were conducted. When the workers treated with 100 times dilution were kept with the untreated workers and the soldiers in the same container for 2, 7 or 24 hrs. respectively, the untreated individuals died within 20 to 30 days. And, when above-mentioned workers were kept with ten times of the untreated workers in the same container continuously, all the individuals died within 15 days. Besides, when 100 times dilution was sprayed to the infested part where the workers swarmed using a larger container, all the individuals died within 12 days. Therefore, the contagious effect of M. anisopliae was shown clearly. But this effect declined when the workers exposed to the treated filter paper were used instead of the workers directly treated. It seems that the number of conidia attached to the termite body may affect the termiticidal activity.
These results suggest that the practical use of Bio-Blast^TM as a termite control agent is expected.

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A trapping test of flying insects with insect trap (ILT) attracted with room lights for 3 hours was conducted.
Trapping rates by light trap (20W×1 UV-A lamp) in closed room (53m²×3m) for one night were 55.1% with one ILT, 74.2% with three ILT in the center of the room and 50.6% with one ILT at wall. About 96-98% of untrapped insects were dead and dispersed widely on floor, and other 2% of it were alive.
More dead insects were distributed on the floor under ILT.

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[in Japanese]

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[in Japanese]

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This paper purposes to investigate the effect of the partitions to prevent the invation of flying insects. Four partitions, room, door, vinyl curtain and speed shutter, prevented the invasion of flying insects than control (no partition). The most effective partition was room. On the other hand, the speed shutter was worst effective partition.

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[in Japanese]

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[in Japanese]

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