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

文献类型： 外文期刊

第一作者： Yue Lei

作者： Yue Lei;Wang Yao;Guo Jian-ying;Zhou Zhong-shi;Wan Fang-hao

作者机构：

关键词： Ophraella communa; mating status; cold tolerance; hibernation; super cooling point; energy reserves

期刊名称：JOURNAL OF INTEGRATIVE AGRICULTURE （ 影响因子：2.848； 五年影响因子：2.979 ）

ISSN： 2095-3119

年卷期： 2019 年 18 卷 4 期

页码：

收录情况： SCI

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.

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