Influence of pesticide applications on pest and predatory arthropods associated with transgenic<Emphasis Type="Italic">Bt</Emphasis> cotton and nontransgenic cotton plants |
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| Authors: | Xingyuan?Men Email author" target="_blank">Feng?GeEmail author Clive?A?Edwards Erdal?N?Yardim |
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| Institution: | (1) State Key Laboratory of Integrated Management of Pest Insects and Rodents, Inst. of Zoology, Chinese Academy of Sciences, 100080 Beijing, P.R. China;(2) Dept. of Entomology, The Ohio State University, 43210 Columbus, OH, USA;(3) Dept. of Entomology, Faculty of Agriculture, Yuzuncu Yil University, Van, Turkey |
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| Abstract: | The effects of pesticide applications on pests (aphids and acarid mites) and predators (ladybeetles and spiders) were investigated
in transgenicBt cotton and nontransgenic cotton agroecosystems in 1999, 2000 and 2001. Transgenic cotton did not cause changes in populations
of acarids and did not reduce numbers of predators considerably; its effects on aphids were inconsistent. Although insecticides
were not applied against the main pest — cotton bollworm — on transgenic cotton, the total number of insecticide applications
in 3 years was no less than the total applied on nontransgenic cotton, because additional applications were required against
sucking pests on transgenicBt cotton. Pesticide applications decreased numbers of aphids, acarids and predatory spiders significantly on both transgenic
and nontransgenic cottons. The results suggest that the use ofBt cotton should be evaluated carefully in China.
http://www.phytoparasitica.org posting April 30, 2004. |
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| Keywords: | TransgenicBt cotton pesticides arthropods pests predators non-target effect |
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