Embryonic development in the eggs of the silkworm, Bombyx mori, exposed to the space environment.
Embryonic development in the eggs of the silkworm, Bombyx mori, exposed to the space environment.
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暴露在太空环境中的家蚕卵的胚胎发育。
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
T. Watanabe
中科院分区：
文献类型：
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作者：
T. Furusawa;E. Kotani;M. Ichida;Y. Sugimura;H. Yamanaka;S. Takahashi;M. Fukui;K. Kogure;B. Sakaguchi;H. Fujii;M. Ikenaga;T. Watanabe
为了研究宇宙辐射和微重力对鱼卵胚胎发生和器官发生的影响，将两个不同阶段的卵，即产卵后早期和滞育终止的卵，装载在美国航天飞机/亚特兰蒂斯号（STS-84）上进行为期9天的飞行。在飞行样品和地面对照中，85%以上的早期卵孵化。在滞育终止卵中，未孵化卵的百分比在地面对照中为43%，在飞行样品中为56%。在这些卵中，观察到飞行样品中未完成的胚胎逆转的百分比比地面对照高两倍。飞行样品中幼虫节段融合和出现异常新月形斑纹等异常现象的发生率显著高于地面对照。在飞行样品的第1代和第2代子代中也观察到这一点。根据这些结果，讨论了与宇宙辐射和微重力有关的不成功的囊胚分裂和异常外观。
To investigate the effects of cosmic radiation and microgravity on embryogenesis and organogenesis in Bombyx eggs, two different stages of eggs, the early stage after oviposition and the diapause-terminated eggs, were loaded on the US Space Shuttle/Atlantis (STS-84) for a 9 day flight. More than 85% of the early stage eggs hatched in the flight sample and the ground control. In the diapause-terminated eggs, the percentage of unhatched eggs were 43% in the ground control and 56% in the flight sample. In these eggs, uncompleted embryonic reversal was observed two-fold higher percentage in the flight sample than in the ground control. The incidence of abnormality such as the larvae with segmental fusion and the appearance of abnormal crescent marking in the flight sample was significantly higher than that in the ground control. This was also observed in the 1st and 2nd filial generation of the flight sample. From these results, unsuccessful blastokinesis and the abnormal appearance was discussed in relation to cosmic radiation and microgravity.