Effect of repeated applications of fipronil on arthropod populations in experimental plot studies
2004
Nuraziah A. | Ismail B. S. | Nor-Aini D. | Maimon A.
The effect of two applications of fipronil on arthropod populations were studied under experimental plotconditions using 3-month old Cuphea ignea. Eighty-one families belonging to 12 orders of Arthropoda weretrapped before spraying. The four dominant orders were Hymenoptera (28.6%), Homoptera (19.1 %), Collembola(17.8%) and Diptera (16.2%). Other orders were present in small numbers i.e. Hemiptera, ColeopterayOrthoptera, Thysanoptera, Araneida, Acarina, Lepidoptera and Isopoda. The abundance of arthropods wasreduced to 44 and 47 families after the first and second sprayings, respectively. The percentage population ofCollembola increased significantly after the first and second sprayings as compared to the number before treatment.The percentage population of Homoptera (Aleyrodidae) increased after the first spray but declined after the secondspray. The family Isotomidae (Collembola) increased significantly after the first and second sprays. Some orderssuch as Isopoda and Lepidoptera disappeared after the plot was treated with fipronil.
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