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Published April 24, 2015 | Version v1
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Data from: Insecticides promote viral outbreaks by altering herbivore competition

  • 1. Chinese Academy of Agricultural Sciences
  • 2. University of Rhode Island
  • 3. Qingdao Agricultural University
  • 4. University of Arizona
  • 5. University of Kentucky

Description

While the management of biological invasions is often characterized by a series of single-species decisions, invasive species exist within larger food webs. These biotic interactions can alter the impact of control/eradication programs and may cause suppression efforts to inadvertently facilitate invasion spread and impact. We document the rapid replacement of the invasive Bemisia MEAM1 cryptic species by the cryptic MED species throughout China, and demonstrate that MED is more tolerant of insecticides and a better vector of tomato yellow leaf curl virus ('TYLCV') than MEAM1. While MEAM1 usually excludes MED under natural conditions, insecticide application reverses the MEAM1-MED competitive hierarchy and allows MED to exclude MEAM1. The insecticide-mediated success of MED has led to TYLCV outbreaks throughout China. Our work strongly supports the hypothesis that insecticide use in China reverses the MEAM1-MED competitive hierarchy and allows MED to displace MEAM1 in managed landscapes. By promoting the dominance of a Bemisia species that is a competent viral vector, insecticides thus increase the spread and impact of TYLCV in heterogeneous agroecosystems.

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Related works

Is cited by
10.1890/14-0752.1 (DOI)