Hemmersbach R, Voormanns R, Briegleb W, Rieder N, Häder D P
Institut of Aerospace Medicine, Köln, Germany.
J Biotechnol. 1996 Jun 27;47(2-3):271-8. doi: 10.1016/0168-1656(96)01337-5.
The gravitactic ciliates Paramecium and Loxodes were cultivated for 15 days in space during the IML-2 spacelab mission. At dedicated times their behavioral responses to different accelerations between 10(-3) x g and 1.5 x g were investigated by using a slow rotating centrifuge microscope (NIZEMI). The threshold for gravitaxis of Paramecium was found to be at > 0.16 x g and < or = 0.3 x g. No adaptation of Paramecium to the conditions of weightlessness was observed over the duration of 15 days. Loxodes showed no graviresponses to increasing accelerations, though it demonstrated gravitaxis after return to earth.
在IML-2太空实验室任务期间，向重力性纤毛虫草履虫和斜管虫在太空中培养了15天。在特定时间，使用慢速旋转离心机显微镜（NIZEMI）研究了它们在10^(-3)×g至1.5×g之间不同加速度下的行为反应。发现草履虫的向重力性阈值在>0.16×g且<或 = 0.3×g。在15天的时间里，未观察到草履虫对失重条件的适应。斜管虫对增加的加速度没有重力反应，不过在返回地球后表现出向重力性。
