Sex and Body Colour Affect the Variation in Internal Body Temperature of Oedaleus decorus asiaticus in Natural Habitats in Inner Mongolia, China
Sex and Body Colour Affect the Variation in Internal Body Temperature of Oedaleus decorus asiaticus in Natural Habitats in Inner Mongolia, China
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DOI：
10.3390/agriculture12060878
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发表时间：
2022-06-01
影响因子：
3.6
通讯作者：
Luke, Belinda
中科院分区：
文献类型：
--
作者：
Cheng, Yumeng;Li, Hongmei;Luke, Belinda
亚洲小车蝗是我国农牧区危害最大的蝗虫之一。这种蝗虫的瘟疫会加剧草地退化，对畜牧业造成巨大损害。真菌生物农药被认为是控制蝗虫和蝗虫的合适手段。然而，真菌生物农药的效率取决于温度。目前，有有限的知识，这种蝗虫在自然栖息地的热生物学。在这项研究中，地面温度测量与使用热电偶和手持温度计测量体内温度相结合。蝗虫于2017年和2018年在中国内蒙古自治区的八个不同地点的白天被随机捕获。结果表明，在相同的温度下，红腹锦鸡儿和红腹锦鸡儿成虫的平均体温均高于红腹锦鸡儿。D. asiaticusis高于地面温度，并且在白天，它分别随着地面温度的升高/降低而升高/降低。而且，在一天中的不同时间，特别是在6：00、10：00、13：00和18：00左右，成年人的内部体温明显高于成年人。女性体内温度明显高于男性平均0.90摄氏度。此外，棕色变体的平均内部体温比绿色变体的平均内部体温高约1.17摄氏度。这些发现表明，棕色变形昆虫可能对真菌生物农药更耐受，因此生物农药可能需要更长的时间才能杀死它们。因此，对气候变化的生理生态适应可能会影响未来真菌生物农药的使用。
Oedaleus decorus asiaticus is one of the most harmful locusts in agricultural and pastoral areas in China. Plagues of this grasshopper can aggravate grassland degradation and cause huge damage to the livestock industry. Fungal biopesticides are seen as a suitable means of controlling grasshoppers and locusts. However, the efficiency of fungal biopesticides is dependent on temperature. Currently, there is limited knowledge on the thermal biology of this grasshopper in natural habitats. In this study, ground temperature measurements were made in conjunction with measurements of internal body temperatures using thermocouples and hand-held thermometers. The grasshoppers were randomly caught during the daytime in 2017 and 2018 in eight different locations in Inner Mongolia Autonomous Region, China. Our results indicated that the average internal body temperature of nymphs as well as adults of O. d. asiaticusis was higher than the ground temperature and that it increases/decreases with increases/decreases in ground temperature, respectively, during the daytime. Moreover, the adult internal body temperature is significantly higher than that of the nymphs at different times of the day, specifically around 6:00, 10:00, 13:00, and 18:00. Female internal body temperatures were significantly higher than those of the males by an average of 0.90 degrees C. Additionally, the average internal body temperature of the brown morphs was higher than that of the green morphs by approximately 1.17 degrees C. These findings demonstrate that brown morph insects might be more tolerant of fungal biopesticides and hence the biopesticides may take longer to kill them. Hence, ecophysiological adaptations to climate change may affect how fungal biopesticides could be used in the future.