Abstract The psyllid Cacopsylla chinensis (Yang & Li) (Hemiptera: Psyllidae) is a serious pest of pears in China. To determine and contrast the fitness of the psyllid on two endemic cultivars of Pyrus bretschneideri (i.e., BHXS and BSL) and two introduced cultivars of Pyrus communis (i.e., CB and CRB), we analyzed data on the development, survival, and fecundity from C. chinensis individuals reared on the four cultivars. The age-stage, two-sex life table theory was used in order to enable the inclusion of males in the analysis as well as a means of identifying the variation in developmental durations among individuals. Results indicated that C. chinensis can successfully develop and reproduce on all four pear cultivars. However, based on the lower preadult survival rate, longer preadult duration, longer total preoviposition period (TPOP), and lower fecundity that occurred on both cultivars of P. communis, these two cultivars are less favorable hosts for C. chinensis than the P. bretschneideri cultivars. The lower intrinsic rate of increase (r), finite rate of increase (λ), and net reproduction rate (R0) on CB and CRB pears showed these two introduced cultivars are more resistant to C. chinensis than the endemic BHXS and BSL pears. These resistant cultivars would be appropriate candidates for managing C. chinensis. We used the bootstrap technique to estimate the uncertainty of the population parameters (r, λ, R0, etc.), while also demonstrating that it can be used for estimating the 0.025 and 0.975 percentile confidence intervals of the age of survival rate. Graphical Abstract Age-stage, two-sex life table can reveal the survial and stage differentiation for assessment of differences between treatments

中文翻译：

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在四个品种梨梨（蔷薇科：蔷薇科）和 P.communis Pears 上饲养的 Cacopsylla chinensis（半翅目：木虱科）的人口统计学与特定生命表统计的置信区间估计

摘要 木虱 Cacopsylla chinensis (Yang & Li) (半翅目：木虱科)是我国梨的严重害虫。为了确定和对比木虱在两个地方性梨树品种（即 BHXS 和 BSL）和两个引进的梨树品种（即 CB 和 CRB）上的适合度，我们分析了木虱的发育、存活和繁殖力数据。 C. chinensis 个体饲养在四个品种上。使用年龄阶段、两性生命表理论是为了能够将男性纳入分析以及确定个体发育持续时间变化的手段。结果表明，C. chinensis 可以在所有四个梨品种上成功发育和繁殖。然而，基于较低的成体存活率、较长的成体持续时间、较长的总产前期（TPOP），和 P.communis 的两个品种的繁殖力较低，这两个品种对 C. chinensis 的有利宿主不如 P. bretschneideri 品种。CB 和 CRB 梨较低的内​​在增长率 (r)、有限增长率 (λ) 和净繁殖率 (R0) 表明这两个引进品种比地方性 BHXS 和 BSL 梨对 C. chinensis 的抗性更强。这些抗性栽培品种将是管理 C. chinensis 的合适候选者。我们使用 bootstrap 技术来估计人口参数（r、λ、R0 等）的不确定性，同时也证明它可以用于估计存活率年龄的 0.025 和 0.975 百分位置信区间。图形抽象时代阶段，