Sentence examples for evolution of pests from inspiring English sources

In one of few concessions to critics, the report suggests that more can be done to prevent the evolution of pests that are resistant to the Bt toxin.

Such exposure could speed the evolution of pests that are resistant to the insecticide, a development that would render Bt useless.

The report, which was made public last week and focuses on crops genetically modified to produce an insecticide known as Bt, also minimized the potential for other environmental problems, including the persistence of the insecticide in the soil and the evolution of pests that can withstand it.

Environmentalists in the United States, where genetically altered crops have proved extremely popular, are also concerned that Bt cotton could help speed the evolution of pests resistant to the Bt toxin, a widely used naturally produced insecticide popular with conventional and organic farmers.

Evolution of pest resistance reduces the efficacy of insecticidal proteins from the gram-positive bacterium Bacillus thuringiensis (Bt) used widely in sprays and transgenic crops.

The primary strategy for delaying the evolution of pest resistance to transgenic crops that produce insecticidal proteins from Bacillus thuringiensis (Bt) entails refuges of plants that do not produce Bt toxins and thus allow survival of susceptible pests.

To delay evolution of pest resistance to cotton producing Bt toxin Cry1Ac, several countries have required refuges of non-Bt cotton, while farmers in China have relied on "natural" refuges of non-Bt host plants other than cotton.

For example, biological control agents may delay the evolution of pest resistance to GM crops, and suppress outbreaks of secondary pests not targeted by GM plants, while herbicide-tolerant crops facilitate within-field management of vegetational diversity that can enhance the efficacy of biological control agents.

These results support the hypothesis that the globalization of agriculture will have an immediate impact on the evolution of pest populations.

The main strategy for delaying evolution of pest resistance to Bt crops relies on refuges of host plants that do not produce Bt toxins, which promotes survival of pests susceptible to Bt toxins (Gould 1998; Tabashnik et al. 2004).

Adaptive evolution of pest insects in response to the introduction of resistant cultivars is well documented and commonly results in virulent (i.e., capable of feeding upon resistant cultivars) insect populations being labeled as distinct biotypes.