Small-package life support ecological system for long-lasting space experiment: feasibility studies on the application to fish experiments

DOI Web Site 参考文献6件
  • NIIHORI Maki
    Graduate School of Humanities and Sciences, Ochanomizu University
  • POYNTER Jane
    Paragon Space Development Corporation
  • NELSON G. NELSON
    Environmental Research Laboratory, Department of Soil, Water and Environmental Science, University of Arizona
  • MOGAM Yoshihiro
    Graduate School of Humanities and Sciences, Ochanomizu University

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  • Small-package Life Support Ecological System for Long-lasting Space Experiment: Feasibility Studies on the Application to Fish Experiment

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n 2003, the experiment was operated aboard the space shuttle Colunbia, STS-107 for the study on the development and swimming behavior of Medaka fry under microgravity in space1). In this experiment a closed ecological system was prepared based on the ABS, Autonomous Biological System2-5） and used to maintain the life of Medaka eggs and hatched fry during flight mission (16 days). It provided mechanically quiet enviroment and was very useful to study the behavior of animals under microgravity. In order to expand the utility of the closed ecological system for space experiment, we conducted studies aiming at designing a closed ecological system to maintain a long-term life support for the least killifish Heterandria formosa. We report the preliminary results of the study, focusing on the effect of biological as well as chemical factors involved in ecological system. According to the evaluation of the life-support performance in terms of the survival, growth, and activity of the fish over 30-day periods, we concluded that the basic design verified in this study would be useful for long-term life support systems for fish. Microgravity environment in space has been recently utilized as the field to inverstigate the gravitational biology. Small-packaged life support systems would be applicable to biological transport through space.

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