Residual toxicity of beta cyfluthrin, alpha cypermethrin and deltamethrin against Tribolium confusum Jacquelin du Val (Coleoptera: Tenebrionidae) on stored wheat

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概要

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• Laboratory tests were carried out in order to evaluate the insecticidal effect of the pyrethroids deltamethrin, beta cyfluthrin and alpha cypermethrin at the rates of 0.125 and 0.250 ppm, against the confused flour beetle Tribolium confusum on stored wheat. Therefore, clean untreated wheat was sprayed with these insecticides and stored for six months. During this period, four bioassays were carried out (32, 66, 101 and 171 days after insecticide application), in order to evaluate the residual efficacy of each pyrethroid. In each bioassay, pyrethroid-treated wheat was infested with T. confusum adults, and dead insects were counted after 24h, 48h and 7d of exposure. In addition, in each bioassay, the progeny production was also examined. Mortality was notably higher after 7d of exposure, as compared to 24 and 48h counts. At the 7d-exposure counts, beta cyfluthrin, at 0.250 ppm, was more effective as compared to the other treatments. This pyrethroid provided a satisfactory level of protection against T. confusum for a relatively long period, since the mortality 1 and 3.5 months after the treatment, was 98.6 and 88.7% at the rate of 0.250ppm and 83.6 and 58.2% at the rate of 0.125 ppm, respectively. Similar mortality levels to the low rate of beta cyfluthrin were also recorded for the high rate of alpha cypermethrin (87.4 and 55.3%, respectively). Six months after the treatment, the efficacy of the high dose of beta cyfluthrin was 77.7%, while for the other treatments the respective figures were rather low (<48%). No progeny production was recorded on treated wheat, after the removal of the exposed adults, in any of the treatments. Finally, when adults that survived after a 7d exposure interval on treated wheat were placed on untreated flour, progeny production was recorded only in the last two bioassays and only in the case of alpha cypermethrin.

• 日本応用動物昆虫学会の論文
• 2004-05-25

著者

• Dimizas Constantin

  Laboratory Of Agricultural Zoology And Entomology Faculty Of Plant Science Agricultural University O

• Buchelos Constantin

  Laboratory Of Agricultural Zoology And Entomology Faculty Of Plant Science Agricultural University O

• ATHANASSIOU Christos

  Laboratory of Agricultural Zoology and Entomology, Faculty of Plant Science, Agricultural University

• KAVALLIERATOS Nickolas

  Laboratory of Agricultural Entomology, Department of Entomology and Agricultural Zoology, Benaki Phy

• VAYIAS Basileios

  Laboratory of Agricultural Zoology and Entomology, Faculty of Plant Science, Agricultural University

• PAPAGREGORIOU Amalia

  Laboratory of Efficacy Evaluation of Pesticides, Benaki Phytopathological Institute

• Vayias Basileios

  Laboratory Of Agricultural Zoology And Entomology Faculty Of Plant Science Agricultural University O

• Papagregoriou Amalia

  Laboratory Of Efficacy Evaluation Of Pesticides Benaki Phytopathological Institute

• Kavallieratos N

  Laboratory Of Agricultural Entomology Department Of Entomology And Agricultural Zoology Benaki Phyto

• Kavallieratos Nickolas

  Laboratory Of Agricultural Entomology Department Of Entomology And Agricultural Zoology Benaki Phyto

• Athanassiou C

  Laboratory Of Agricultural Zoology And Entomology Faculty Of Plant Science Agricultural University O

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