英文摘要 |
Cypermethrin, tetramethrin, permethrin, deltamethrin, chlorpyrifos, fenitrothion, pirimiphos-methyl, propoxur, fipronil and imidacloprid were tested to the susceptible insect colonies in our laboratory for the determination of the insecticides resistance discriminating dose or diagnostic dose. The results would help the pest control operators to apply more effective control agents. Laboratory of biological assays showed that the order of susceptibilities to various insecticides of laboratory cohort of Bllatela germanica (LD50); fipronil (0.11 μ g/male), fenitrothion (0.34 μ g/male), deltamethrin (0.49 μ g/male), imidacloprid (1.06 μ g/male), propoxur (1.40 μ g/male), chloropyrifos (1.77 μ g/male), cypermethrin (1.89 μ g/male), pirimiphos-methyl (2.30 μ g/male), permethrin (5.61 μ g/male), tetramethrin (61.24). Laboratory cohort of Periplaneta americana showed that the order of susceptibilities to various insecticides (LD50); deltamethrin (0.017 μ g/male), cypermethrin (0.20 μ g/male), propoxur (0.37 μ g/male), imidacloprid (0.99 μ g/male), permethrin (1.19 μ g/male), fipronil (3.20) μ g/male), chloropyrifos (3.29 μg/male), fenitrothion (3.44 μ g/male) , pirimiphos-methyl (15.19 μ g/male), tetramethrin (81.11μ g/male). Laboratory cohort of Musca domestica showed that the order of susceptibilities to various insecticides (LD50); tetramethrin (0.27 μ g/male), deltamethrin (0.05 μ g/male) , fipronil (0.81μg/male) , cypermethrin (1.59μg/male), pirimiphos-methyl (2.21μg/male), permethrin (2.50μg/male) , propoxur (7.57 μg/male), fenitrothion (9.24μg/male) , chloropyrifos (63.81μg/male) ,imidacloprid (79.42μg/ male). Laboratory cohort of Chrysomya megacephala showed that the order of susceptibilities to various insecticides (LD50); deltamethrin (2.52 μ g/male),cypermethrin (10.56 μg/male), fipronil (21.96 μ g/male), pirimiphos-methyl (30.25 μ g/male),permethrin (39.21 μ g/male), chloropyrifos (54.22 μ g/male), propoxur (66.40 μ g/male), imidacloprid (146.03 μ g/male), tetramethrin ( 341.7 μg/male). Llaboratory cohort of Drosophila melanogaster showed that the order of susceptibilities to various insecticides (LD50); deltamethrin (0.02 μ g/male), fenitrothion (0.07 μ g/male), cypermethrin (0.23 μ g/male),fipronil (0.23 μ g/male), imidachloprid (0.23 μ g/male), chloropyrifos (0.3 μ g/male), pirimiphos-methyl (0.82 μ g/male) , permethrin (3.57 μ g/male), tetramethrin (4.74 μ g/male), propoxur (5.90 μ g/male). Laboratory cohort of Cimex lectularius showed that the order of susceptibilities to various insecticides (LC50); fenitrothion (0.03 ηg/cm2), chlorpyifos (0.04 ηg/cm2), deltamethrin (0.14 ηg/cm2), pirmiphos-methyl (1.36 ηg/cm2), cypermethrin (2.64 ηg/cm2), fipronil (3.47 ηg/cm2), propoxur (3.62 ηg/cm2), imidaclorprid (3.92 ηg/cm2), tetramethrin(21.90 ηg/cm2), permethrin (46.90 ηg/cm2). B. germanica, P. americana, C. megacephala, M. domestica, D. melanogaster and C. lectularius were collected from the north, central, south and the east part of Taiwan. The patterns of insecticide susceptibility to cypermethrin, tetramethrin, permethrin, deltamethrin, chlorpyrifos, fenitrothion, pirimiphos-methyl, propoxur, fipronil and imidacloprid by diagnostic dose were determined. B. germanica from collecting study sites were median resistant to deltamethrin but low resistance to other 9 insecticides. P. periplaneta from all study sites were low resistant to all tested insecticides. M. domestica from collecting site were low resistant to chlorpyrifos but high resistant to other 9 insecticides. C. megacephala from all study sites were low resistant to all tested insecticides. D. melanogaster from all study sites were high resistant to cypermethrin, fipronil, and imidachloprid. C. lectularius showed the highest resisitant to imidacloprid. These results provide the scientific basis for integrated pest management systems in effective insecticides used.
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