Department of Insects Genetics, Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia.
Laser Systems Department, Novosibirsk State Technical University, Novosibirsk, Russia.
Arch Insect Biochem Physiol. 2019 Dec;102(4):e21619. doi: 10.1002/arch.21619. Epub 2019 Sep 18.
In natural populations, insects regularly face an adverse impact of different natures: harsh weather swings, lack of food resources, the insecticidal treatment. We studied the effect of repeated episodes of mild heat stress of different frequencies on stress resistance of Drosophila melanogaster females. We found out that the mild heat stress (38°С, 1 hr) repeated daily within 2 weeks resulted in (a) an increased activity of the dopamine (DA) metabolism enzymes, DA-dependent arylalkylamine N-acetyltransferase and alkaline phosphatase, which suggested a decrease in DA level, and (b) an increased survival rate under acute heat stress (38°С, 4 hr). The same mild heat stress repeated weekly had no effect on these parameters.
在自然种群中，昆虫经常面临各种不利影响，如恶劣的天气波动、食物资源匮乏、杀虫剂处理等。我们研究了不同频率的轻度热应激反复发生对黑腹果蝇雌性的抗逆性的影响。我们发现，在 2 周内每天重复轻度热应激（38°C，1 小时）会导致：（a）多巴胺（DA）代谢酶，即 DA 依赖性芳基烷基胺 N-乙酰基转移酶和碱性磷酸酶的活性增加，这表明 DA 水平降低；（b）在急性热应激（38°C，4 小时）下的存活率增加。同样的轻度热应激每周重复一次对这些参数没有影响。
