Liu Dailin, Wu Cirui, Wang Qi, Liu Donghao, Tian Zhenqi, Liu Jian
College of Plant Protection, Northeast Agricultural University, Changjiang Road 600, Harbin, Heilongjiang Province 150030, China.
Environ Entomol. 2023 Oct 16;52(5):939-948. doi: 10.1093/ee/nvad071.
As global warming intensifies, heat waves occur frequently in the summer and autumn in Heilongjiang Province, northeast China. The soybean aphid, Aphis glycines Matsumura, is an important pest of soybean in the region, which faces great survival pressure due to high temperature. In this study, A. glycines fed soybean (AgFS) and wild soybean (AgFW) were exposed to diurnal 35 °C for 7 days begin at different developmental stages, and the development, reproduction, and morph differentiation were studied. When AgFS were exposed to heat waves from the second stadium to the adult stage, they performed worse in adult lifespan and fecundity than the control. When AgFW were exposed to heat waves begin at different developmental stages, the adult lifespan and reproduction period were shortened and reproduction ability decreased. When exposed to heat waves, the adult fecundity and intrinsic rate of increase in AgFW were lower than those of AgFS. Lower proportion of males were deposited on day 13, when AgFS and AgFW were exposed to diurnal 35 °C begin at different developmental stages. The results showed that heat waves lasting for 7 days were likely to be useful in the management of A. glycines, which reduced adult reproduction ability and male differentiation proportion in the offspring and significantly affected AgFW compared to AgFS. These results are important for predicting the dynamics of A. glycines in Heilongjiang, northeast China, where the local environmental temperature is increasing and heat waves occur frequently.
随着全球变暖加剧，中国东北黑龙江省夏秋季节热浪频发。大豆蚜是该地区大豆的重要害虫，高温使其面临巨大生存压力。本研究中，将取食大豆（AgFS）和野生大豆（AgFW）的大豆蚜在不同发育阶段开始连续7天暴露于35℃昼夜高温环境下，研究其发育、繁殖及形态分化情况。当AgFS从二龄期到成虫期暴露于热浪中时，其成虫寿命和繁殖力比对照差。当AgFW在不同发育阶段开始暴露于热浪中时，成虫寿命和繁殖期缩短，繁殖能力下降。暴露于热浪时，AgFW的成虫繁殖力和内禀增长率低于AgFS。当AgFS和AgFW在不同发育阶段开始暴露于35℃昼夜高温环境下时，第13天雄蚜比例降低。结果表明，持续7天的热浪可能有助于治理大豆蚜，其降低了成虫繁殖能力和后代雄蚜分化比例，且对AgFW的影响比对AgFS的影响更大。这些结果对于预测中国东北黑龙江省大豆蚜的发生动态具有重要意义，该地区当地环境温度正在升高且热浪频发。
