Effect of Bt corn for corn rootworm control on nontarget soil microarthropods and nematodes

被引：68

作者：

Al-Deeb, MA ^{[1
]}

Wilde, GE ^{[1
]}

Blair, JM ^{[1
]}

Todd, TC ^{[1
]}

机构：

[1] Kansas State Univ, Dept Entomol, Manhattan, KS 66506 USA

来源：

ENVIRONMENTAL ENTOMOLOGY | 2003年 / 32卷 / 04期

关键词：

Bt corn; nontarget organisms; Cry3Bb1;

D O I：

10.1603/0046-225X-32.4.859

中图分类号：

Q96 [昆虫学];

学科分类号：

摘要：

The western corn rootworm, Diabrotica virgifera virgifera LeConte (Coleoptera: Chrysomelidae), is a major pest of corn in Kansas. Planting Bt corn hybrids resistant to this pest is being tested as a method to control the larval stage of corn rootworms. These hybrids express Cry3Bb1 toxin and are expected to only directly impact chrysomelids and possibly related taxa. Soil samples were examined to evaluate the effect of Bt corn for corn rootworm control on soil microarthropods and nematodes in Kansas in 2000 and 2001. Soil samples from soil close to Bt corn and to its isoline were taken on three occasions (early, mid, and late season) from eight locations in 2000 and three locations in 2001. Soil mites and Collembola were extracted using a modified Tullgren high-gradient extractor. Nematodes were extracted using a centrifugal-flotation procedure. In general, numbers of soil mites (Prostigmata, Mesostigmata, and Oribatei), Collembola, and nematodes were similar in soil planted with Bt corn and soil planted with its isoline.

引用

页码：859 / 865

页数：7

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