Influence of Bt Maize on Diversity and Composition of Non-target Arthropod Species
| Autor: | Anderson José da Silva Guimarães, Marcos Gino Fernandes, Maria Freire de Sousa |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Cry3Bb1
Genetically modified maize fungi food and beverages Species diversity 04 agricultural and veterinary sciences Biology biology.organism_classification Crop stomatognathic system Bacillus thuringiensis Botany 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Composition (visual arts) Cultivar Arthropod |
| Zdroj: | Journal of Agricultural Science. 11:201 |
| ISSN: | 1916-9760 1916-9752 |
| DOI: | 10.5539/jas.v11n2p201 |
| Popis: | Non-target arthropods may be affected by toxins derived from Bacillus thuringiensis (Bt) expressed in transgenic maize. The objective of this study was to evaluate the possible impacts of Bt maize on the diversity and the composition of non-target arthropod species by analyzing one field cultivated with conventional maize (no expressing transgenic protein) and three fields cultivated with transgenic maize (expressing Bt proteins). In each field was sampled 50 entirely plants for the number of arthropod specimens and registred the degree of injury caused by the chewing insects. A total of 2.525 specimens of arthropods, comprising 29 species from 25 families, were recorded on 3.000 sampled plants. The most diverse family belonged to the order Hemiptera. Based on Shannon and Simpson indexes, the Bt-transgenic cultivar EXP3320YG had lower level of non-target arthropod diversity than other cultivars. From this study, it is clear that the diversity of non-target arthropods on maize crop is negatively affected by Cry1Ab protein, while the Cry1A105+Cry2Ab2+Cry1F proteins, and Cry1A105+Cry2Ab2+Cry3Bb1 proteins do not have any effect on arthropod species diversity and composition. |
| Databáze: | OpenAIRE |
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