Malaquias José Bruno, Santana Danilo Renato Santiago, Degrande Paulo Eduardo, Ferreira Claudia Pio, de Melo Elmo Pontes, Godoy Wesley Augusto Conde, Pachú Jéssica Karina da Silva, de Sousa Ramalho Francisco, Omoto Celso, de Azevedo Pereira Alexandre Igor, Guazina Renato Anastacio
Department of Biostatistics, Institute of Biosciences-IBB, São Paulo State University (UNESP), Botucatu 18618-693, Brazil.
Department of Entomology, Federal University of Grande Dourados (UFGD), Dourados 79825-070, Brazil.
Insects. 2021 Feb 12;12(2):157. doi: 10.3390/insects12020157.
Competition behavior involving agricultural pest species has long been viewed as a powerful selective force that drives ecological and phenotypic diversity. In this context, a Game Theory-based approach may be useful to describe the decision-making dilemma of a competitor with impacts to guarantee its superiority in terms of ecological dominance or sharing of the food resource with its competitor. In an attempt to elucidate the consequences of competitive dynamics for the ecological dominance of these species in refuge areas of Bt cotton, we conducted a study that was divided into two parts. The first study consisted of an evaluation of interactions involving (JE Smith, 1797) and (Hübner, 1808) on non-Bt cotton plants in a field trial. In the second study, we explored the data matrix collected in the field to parameterize a model of Cellular Automata (CA) with update rules inspired by Game Theory. Computer simulations were analyzed in hypothetical scenarios involving the application (or not) of insecticides in the refuge areas in combination with the resistance factor of one or both pest species to the insecticides used in the refuge areas. had superior competitive performance in relation to only at high densities. According to the density-mediated shift in dominance of the species, the resistance of to insecticides is seen as a risk factor for the production of susceptible individuals of on a large scale in the refuge areas. Additionally, insecticide resistance may potentially impact the resistance evolution of the population to Bt cotton. Thus, ecological dominance could diverge by the presence of a resistance allele to insecticides with interspecific competition perhaps subordinate to evolutionary processes.
涉及农业害虫物种的竞争行为长期以来一直被视为推动生态和表型多样性的强大选择力量。在这种背景下，基于博弈论的方法可能有助于描述竞争者的决策困境，这种困境会影响其在生态优势或与竞争者共享食物资源方面确保自身优势。为了阐明竞争动态对这些物种在Bt棉花保护区生态优势的影响，我们进行了一项分为两部分的研究。第一项研究包括在田间试验中评估棉铃虫（JE Smith，1797）和烟粉虱（Hübner，1808）在非Bt棉花植株上的相互作用。在第二项研究中，我们探索了在田间收集的数据矩阵，以便根据受博弈论启发的更新规则对细胞自动机（CA）模型进行参数化。在假设情景中分析了计算机模拟结果，这些情景涉及在保护区施用（或不施用）杀虫剂，以及一种或两种害虫物种对保护区使用的杀虫剂的抗性因素。棉铃虫仅在高密度时相对于烟粉虱具有优越的竞争性能。根据物种优势的密度介导转移，棉铃虫对杀虫剂的抗性被视为在保护区大规模产生烟粉虱敏感个体的风险因素。此外，棉铃虫的抗药性可能会潜在地影响烟粉虱种群对Bt棉花的抗性进化。因此，生态优势可能会因存在对杀虫剂的抗性等位基因而发生分歧，种间竞争可能从属于进化过程。
