五龄期米缟螟（鳞翅目：螟蛾科）的热致死动力学

Thermal death kinetics of fifth-instar Corcyras cephalonica (Lepidoptera: Galleriidae).

作者信息

Yang Liling, Zhongxin Li, Ma Wenqiang, Yan Shengkun, Cui Kuanbo

机构信息

Agricultural Mechanization Institute, Xinjiang Academy of Agricultural Sciences, No. 291 North Nanchang Rd., Urumqi, Xinjiang, China College of Engineering, China Agricultural University, No. 17 East Tsinghua Rd., Beijing, China.

Agricultural Mechanization Institute, Xinjiang Academy of Agricultural Sciences, No. 291 North Nanchang Rd., Urumqi, Xinjiang, China

出版信息

J Insect Sci. 2015 Apr 5;15(1). doi: 10.1093/jisesa/iev012. Print 2015.

DOI:10.1093/jisesa/iev012

PMID:25843578

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4535493/

Abstract

The infestation of rice moth, Corcyras cephalonica (Lepidoptera: Galleriidae), causes severe losses in postharvest walnuts. Heat has been studied as a phytosanitary treatment to replace chemical fumigation for controlling this pest. Information on kinetics for thermal mortality of C. cephalonica is needed for developing effective postharvest phytosanitary thermal treatments of walnuts. Thermal death kinetics of fifth-instar C. cephalonica were investigated at temperatures between 44°C and 50°C at a heating rate of 5°C min(-1) using a heating block system. The results showed that thermal-death curves for C. cephalonica larvae followed a 0 order of kinetic reaction. The time to reach 100% mortality decreased with increasing temperature from 150 min at 44°C to 2.5 min at 50°C. The activation energy for controlling C. cephalonica was 466-592 kJ/mol, and the z value obtained from the thermal death time curve was 3.3°C. This kinetic model prediction could be useful in designing the thermal treatment protocol for controlling C. cephalonica in walnuts.

摘要

米蛾（Corcyras cephalonica，鳞翅目：麦蛾科）的侵害会给收获后的核桃造成严重损失。人们已对热处理作为一种植物检疫处理方法进行了研究，以替代化学熏蒸来防治这种害虫。为了开发有效的核桃收获后植物检疫热处理方法，需要有关米蛾热致死动力学的信息。使用加热块系统，在44°C至50°C的温度范围内，以5°C min(-1)的加热速率研究了五龄米蛾的热死亡动力学。结果表明，米蛾幼虫的热死亡曲线遵循零级动力学反应。达到100%死亡率的时间随着温度升高而缩短，从44°C时的150分钟降至50°C时的2.5分钟。控制米蛾的活化能为466 - 592 kJ/mol，从热死亡时间曲线获得的z值为3.3°C。该动力学模型预测对于设计控制核桃中米蛾的热处理方案可能有用。