Dysdercus koenigii, a serious cotton-staining insect pest in many countries, has shown high resistance to imidacloprid, a systemic neonicotinoid insecticide used to control sap-sucking pests. With the aim of creating an effective management strategy, the biological traits of susceptible (SS) and imidacloprid-resistant (Imida-RS) D. koenigii, as well as their reciprocal crosses (CR1 and CR2), were investigated here using a life table established on age, stage, and two-sex patterns. Compared with SS D. koenigii, Imida-RS and CR1 strains had lower relative fitness (0.80 and 0.47, respectively) and fecundity (eggs per female); prolonged egg duration and a prolonged adult preoviposition period; shorter nymphal duration, male/female total longevity, and oviposition days, and a shorter total preoviposition period. However, there were no differences among strains in nymphal survival rates and female ratio. The CR2 D. koenigii had similar relative fitness value (1.09), suggested no fitness cost in most of the parameters. Demographic parameters, including net reproductive rate, were lower in the Imida-RS strain than in SS and CR2 D. koenigii. Similarly, the Imida-RS and CR1 strains had shorter generation time and doubling time, lower reproductive value and life expectancy relative to the SS and CR2 D. koenigii. In addition, age-specific fecundity was negatively affected in the CR1 strain compared with the other strains. These findings could help facilitate the development of rational D. koenigii control strategies.

Dysdercus koenigii，在许多国家中是一种严重的棉花污染害虫，已显示出对吡虫啉的高抗性，吡虫啉是一种系统性的新烟碱类杀虫剂，用于控制吸液性害虫。为了制定有效的管理策略，此处使用生命表调查了易感性（SS）和吡虫啉抗性（Imida-RS）柯氏D. koenigii的生物学特性，以及它们的相互杂交（CR1和CR2）建立在年龄，阶段和两性模式上。与SS D. koenigii相比，Imida-RS和CR1菌株的相对适应度（分别为0.80和0.47）和繁殖力（每位女性的卵）较低；产卵时间延长和成虫产卵期延长 若虫持续时间较短，男女总寿命和产卵天数较短，总产卵前期较短。但是，若虫的成活率和雌性比之间没有差异。CR2 D. koenigii具有相似的相对适应度值（1.09），表明在大多数参数中没有适应度成本。Imida-RS菌株的人口统计学参数（包括净生殖率）低于SS和CR2 D. koenigii。。同样，与SS和CR2 D. koenigii相比，Imida-RS和CR1菌株的生成时间较短，繁殖时间加倍，繁殖价值和预期寿命较低。此外，与其他菌株相比，CR1菌株的年龄特异性繁殖力受到负面影响。这些发现可以帮助促进合理的D. koenigii控制策略的发展。