Low Barometric Pressure Enhances Tethered-Flight Performance and Reproductive of the Oriental Armyworm, Mythimna separata (Lepidoptera: Noctuidae)

文献类型： 外文期刊

第一作者： Miao, Jin

作者： Miao, Jin;Guo, Pei;Li, Huiling;Gong, Zhongjun;Duan, Yun;Li, Tong;Jiang, Yueli;Feng, Hongqiang;Wu, Yuqing;Wei, Changshuan;Liu, Qihang

作者机构：

关键词： low barometric pressure; flight performance; reproduction; respiration rate

期刊名称：JOURNAL OF ECONOMIC ENTOMOLOGY （ 影响因子：2.381； 五年影响因子：2.568 ）

ISSN： 0022-0493

年卷期： 2021 年 114 卷 2 期

页码：

收录情况： SCI

摘要： Barometric pressure is an important factor influencing several insect traits. Most studies have been conducted on the behavior of insects in relation to rapid and slight changes in pressure magnitudes or short-term pressure trends, but there is little information on the effect of long-term and large pressure variations on insect traits. Here, we assessed the effects of static low barometric pressure on the tethered flight, lifespan and reproductive performance of Mythimna separata (Walker), a long-distance migratory insect, using an apparatus simulating low barometric pressure at altitudes of 500 m above sea level. We found that both the flight distance and flight duration of M. separata moths were significantly longer under low barometric pressure conditions. Exposure to low barometric pressure conditions for 24 and 48 h significantly shortened the lifespan of female moths but had no influence on male moths. The ovaries of female moths developed earlier, and the preoviposition and oviposition periods were significantly shortened under low atmospheric pressure. Moreover, low atmospheric pressure reduced the respiration rate of female moths. However, there was an increase in the respiration rate of female moths after being returned to standard barometric pressure conditions. Our results show that the behavior and physiological traits of insects are affected by the low-pressure environment during migration. The low barometric pressure conditions at high altitudes is one of important factors accelerating reproductive behavior of M. separata after migration.

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