Mujica Norma, Sporleder Marc, Carhuapoma Pablo, Kroschel Jürgen
Crop Systems Intensification and Climate Change, International Potato Center (CIP), Av. La Molina 1895, Lima 12, Peru (
Corresponding author, e-mail:
J Econ Entomol. 2017 Jun 1;110(3):1333-1344. doi: 10.1093/jee/tox067.
Liriomyza huidobrensis (Blanchard) is an economically important and highly polyphagous worldwide pest. To establish a temperature-dependent phenology model, essential for understanding the development and growth of the pest population under a variety of climates and as part of a pest risk analysis, L. huidobrensis life-table data were collected under laboratory conditions at seven constant temperatures on its host faba bean (Vicia faba L.). Several nonlinear equations were fitted to each life stage to model the temperature-dependent population growth and species life history and finally compile an overall temperature-dependent pest phenology model using the Insect Life Cycle Modeling (ILCYM) software. Liriomyza huidobrensis completed development from egg to adult in all temperatures evaluated, except at 32 °C, which was lethal to pupae. Eggs did not develop at 35 °C. Mean development time of all immature stages decreased with increasing temperature. Nonlinear models predicted optimal temperature for immature survival between 20-25 °C (32-38% mortality of all immature stages). Life-table parameters simulated at constant temperatures indicated that L. huidobrensis develops within the range of 12-28 °C. Simulated life-table for predicting the population dynamics of L. huidobrensis under two contrasting environments showed that lowland temperatures at the coast of Peru (250 m.a.s.l.) presented better conditions for a potential population increase than highland (3,400 m.a.s.l.) conditions. The presented model linked with Geographic Information Systems will allow pest risk assessments in different environmental regions to support the regulation of pest movement to prevent pest entry into not-yet invaded regions as well as to implement effective management strategies.
南美斑潜蝇（Liriomyza huidobrensis (Blanchard)）是一种在全球范围内具有重要经济意义且食性高度多样的害虫。为建立一个温度依赖的物候模型，这对于理解该害虫种群在各种气候条件下的发育和增长以及作为害虫风险分析的一部分至关重要，在实验室条件下，于七种恒温条件下在其寄主蚕豆（Vicia faba L.）上收集了南美斑潜蝇的生命表数据。对每个生命阶段拟合了几个非线性方程，以模拟温度依赖的种群增长和物种生活史，并最终使用昆虫生命周期建模（ILCYM）软件编制了一个总体温度依赖的害虫物候模型。在所有评估的温度下，南美斑潜蝇都能从卵发育到成虫，但在32°C时除外，该温度对蛹是致命的。卵在35°C时不发育。所有未成熟阶段的平均发育时间随温度升高而减少。非线性模型预测未成熟阶段存活的最佳温度在20 - 25°C之间（所有未成熟阶段的死亡率为32 - 38%）。在恒温条件下模拟的生命表参数表明，南美斑潜蝇在12 - 28°C的范围内发育。预测南美斑潜蝇在两种对比环境下种群动态的模拟生命表表明，秘鲁海岸低地（海拔250米）的温度比高地（海拔3400米）条件更有利于潜在种群增长。所提出的与地理信息系统相关联的模型将允许在不同环境区域进行害虫风险评估，以支持对害虫移动的监管，防止害虫进入尚未入侵的区域，并实施有效的管理策略。
