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Behavioral changes in Drosophila males after travel to international space station
Acta Astronautica ( IF 3.1 ) Pub Date : 2020-11-01 , DOI: 10.1016/j.actaastro.2020.06.048
N.G. Kamyshev , N.G. Besedina , J.V. Bragina , L.V. Danilenkova , S.A. Fedotov , A.A. Goncharova , E.A. Kamysheva , A.A. Burlakova , O.N. Larina

Abstract Results of behavioral tests made postflight after two independent travels of Drosophila melanogaster to International Space Station (ISS) are presented. In Experiment 1, the first instar larvae were launched, and the eclosed imagoes gave the next generation that developed from the egg at ISS. After return to Earth the behavior of adult males of the next generation was examined. In Experiment 2, the newly emerged adult males were launched and after 7.5 days of staying at ISS were tested in the lab. In Experiment 1, we found pronounced influence of development in Space on subsequent locomotor behavior of adult flies. In flies developed in Space, all three independent parameters of locomotor behavior (run frequency, run duration and running speed) were increased, at least at certain time points, during the first hour of registration. At the same time, the climbing ability of experimental flies was reduced. In Experiment 2, no changes in the climbing ability were detected. During the first 30 min after registration beginning the flown flies performed less frequent but more extended runs than the control flies did. However, later the flown flies demonstrated an increased run frequency. Additionally, the interpulse interval in the pulse courtship song was shorter in the flown males. Taken together, the results point to a considerable activation of the central nervous system in flies developed at the ISS and to a minor one in the adult flies travelled to the ISS. This shows that earlier stages of development are more sensitive to spaceflight factors than the adult stage.

中文翻译:

前往国际空间站后果蝇雄性的行为变化

摘要 介绍了黑腹果蝇两次独立旅行到国际空间站 (ISS) 后进行的飞行后行为测试结果。在实验 1 中,发射了第一只龄幼虫,孵化的成虫提供了从国际空间站的卵发育而来的下一代。返回地球后,对下一代成年男性的行为进行了检查。在实验 2 中,新出现的成年雄性被发射,在国际空间站停留 7.5 天后在实验室进行测试。在实验 1 中,我们发现太空中的发育对成年果蝇随后的运动行为有显着影响。在太空中发育的果蝇中,在注册的第一个小时内,至少在某些时间点,运动行为的所有三个独立参数(运行频率、运行持续时间和运行速度)都增加了。同时,实验果蝇的攀爬能力降低。在实验 2 中,没有检测到攀爬能力的变化。在注册开始后的前 30 分钟内,与对照苍蝇相比,飞行的苍蝇的运行频率较低,但运行时间更长。然而,后来飞行的苍蝇表现出增加的运行频率。此外,在飞行的雄性中,脉搏求爱歌曲中的脉冲间隔更短。综上所述,结果表明在国际空间站发育的果蝇的中枢神经系统有相当大的激活,而在前往国际空间站的成年果蝇中也有轻微的激活。这表明发育的早期阶段比成人阶段对航天因素更敏感。没有检测到攀爬能力的变化。在注册开始后的前 30 分钟内,与对照苍蝇相比,飞行的苍蝇的运行频率较低,但运行时间更长。然而,后来飞行的苍蝇表现出增加的运行频率。此外,在飞行的雄性中,脉搏求爱歌曲中的脉冲间隔更短。综上所述,结果表明在国际空间站发育的果蝇的中枢神经系统有相当大的激活,而在前往国际空间站的成年果蝇中也有轻微的激活。这表明发育的早期阶段比成人阶段对航天因素更敏感。没有检测到攀爬能力的变化。在注册开始后的前 30 分钟内,与对照苍蝇相比,飞行的苍蝇的运行频率较低,但运行时间更长。然而,后来飞行的苍蝇表现出增加的运行频率。此外,在飞行的雄性中,脉搏求爱歌曲中的脉冲间隔更短。综上所述,结果表明在国际空间站发育的果蝇的中枢神经系统有相当大的激活,而在前往国际空间站的成年果蝇中也有轻微的激活。这表明发育的早期阶段比成人阶段对航天因素更敏感。后来飞行的苍蝇表现出增加的运行频率。此外,在飞行的雄性中,脉搏求爱歌曲中的脉冲间隔更短。综上所述,结果表明在国际空间站发育的果蝇的中枢神经系统有相当大的激活,而在前往国际空间站的成年果蝇中也有轻微的激活。这表明发育的早期阶段比成人阶段对航天因素更敏感。后来飞行的苍蝇表现出增加的运行频率。此外,在飞行的雄性中,脉搏求爱歌曲中的脉冲间隔更短。综上所述,结果表明在国际空间站发育的果蝇的中枢神经系统有相当大的激活,而在前往国际空间站的成年果蝇中也有轻微的激活。这表明发育的早期阶段比成年阶段对航天因素更敏感。
更新日期:2020-11-01
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