Relationship between copulation and cold hardiness in Ophraella communa(Coleoptera: Chrysomelidae)

作     者：ZHAO Chen-chen YUE Lei WANG Yao GUO Jian-ying ZHOU Zhong-shi WAN Fang-hao 

作者机构：State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant Protection Chinese Academy of Agricultural Sciences 

出 版 物：《Journal of Integrative Agriculture》 (农业科学学报（英文版）)

年 卷 期：2019年第18卷第4期

页      面：900-906页

核心收录：

学科分类：0710[理学-生物学] 0832[工学-食品科学与工程（可授工学、农学学位）] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 1004[医学-公共卫生与预防医学(可授医学、理学学位)] 0905[农学-畜牧学] 09[农学] 0906[农学-兽医学] 0901[农学-作物学] 0703[理学-化学] 0902[农学-园艺学] 0713[理学-生态学] 

基　　金：supported by the National Natural Science Foundation of China(31322046) 

主　　题：Ophraella communa mating status cold toleranee hibernation super cooling point energy reserves 

摘      要：Ophraella communa(Coleoptera: Chrysomelidae), the ragweed leaf beetle, is a biological control agent of the invasive common ragweed, Ambrosia artemisiifolia(Asterales: Asteraceae). Adults can survive cold conditions that occur during winter. The adults mate before entering overwintering. Understanding the connection between copulation and overwintering will be useful for determining O. communa seasonality. Determining the relationship between overwintering and copulation required comparison of mated and unmated beetles at mean lethal temperature(LTemp_(50)) exposures for 2 h. Cold-related physiological indices, including the water ratio, super cooling point(SCP), cryoprotectant levels, and energy reserve levels, were also measured. Mating treatment decreased the LTemp_(50) of both sexes by reducing their mean SCP and water ratios. Although the changes of cryoprotectant levels in mated adults were not precisely consistent in between the genders, they increased greatly in both males and females. Body sugar may play a role in copulation and may also elevate cold hardiness in O. communa.