2004
DOI: 10.1590/s0103-90162004000500003
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Abstract: One of the main risks associated to transgenic crops expressing Bacillus thuringiensis (Bt) toxins is the evolution of pest resistance. The adoption of Bt crops requires environmental risk assessment that includes resistance risk estimation, useful for definition of resistance management strategies aiming to delay resistance evolution. In this context, resistance risk is defined as the probability of the Bt toxin resistance allele frequency (RFreq) exceeding a critical value (CriticalFreq). Mathematical simu… Show more

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Cited by 7 publications
(5 citation statements)
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References 10 publications
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“…Thus, the marginal distribution for each data series remains unchanged, but the correlations among the series are adjusted. The Iman and Conover (1982) method has been employed in a variety of practical applications; for example, see Maia and Neto (2004), Brus and Jansen (2004), and Wu and Tsang (2004).…”
Section: Programming For Whole-farm Insurancementioning
confidence: 99%
“…Thus, the marginal distribution for each data series remains unchanged, but the correlations among the series are adjusted. The Iman and Conover (1982) method has been employed in a variety of practical applications; for example, see Maia and Neto (2004), Brus and Jansen (2004), and Wu and Tsang (2004).…”
Section: Programming For Whole-farm Insurancementioning
confidence: 99%
“…However, prior to the evolution of field resistance, the assumptions and predictions of these resistance management strategies can only be tested via lab selection of resistant strains. Laboratory‐selected resistant strains offer an opportunity to assess resistance inheritance, determine the mechanism of resistance, estimate the resistance allele frequency, evaluate fitness costs, develop molecular diagnostics, test models to predict resistance evolution and refine the current resistance management strategies. In this study we selected a Vip3Aa20‐resistant S. frugiperda strain from a field population by using a F 2 screening method .…”
Section: Introductionmentioning
confidence: 99%
“…This risk assessment technique effectively assigns probabilities to outcomes and has recently been adopted to examine risk of the evolution of insect resist ance to transgenic crops (Maia. 2003: Maia andDourado-Neto, 2004;Caprio et a i . 2006).…”
Section: Aiiiah/smg Parameter Yn«gríainíymentioning
confidence: 99%
“…For exampie. Maia and Dourado-Neto (2004) used uniform, symmetrical triangular, and symmeíricai truncated norma! distributions for characterizing uncertainty of the re sistance allele initial frequency.…”
Section: Aiiiah/smg Parameter Yn«gríainíymentioning
confidence: 99%