AToxMss--from a space proven payload to a validated testsystem in ecotoxicology

Area of Science:

• Ecotoxicology
• Aquatic Systems Biology
• Space Biology

Background:

• The C.E.B.A.S.-Minimodule is a space-qualified aquatic microcosm (8.6 L) capable of supporting multiple aquatic species.
• Its characteristics include a closed system, high standardization, and the potential for long-term (over 4 weeks) studies involving organisms from different trophic levels.
• These features make it suitable for ecotoxicological research.

Purpose of the Study:

• To develop an improved aquatic microcosm, the Closed Biological Research Unit (C.B.R.U.), for scientific and commercial ecotoxicology.
• To advance Aquatic EcoToxicology in a Multispecies System (AToxMss) through a collaborative R&D project.
• To establish a standardized and reliable platform for assessing the impact of chemicals on aquatic ecosystems.

Main Methods:

• Development of the C.B.R.U. module based on the C.E.B.A.S.-Minimodule.
• Parameter determination for indicating chemical impact on biological systems.
• Selection of appropriate test substances and manufacturing of functional modules.
• System calibration using well-known toxic substances and chemicals in upcoming test runs.

Main Results:

• Three functional C.E.B.A.S.-Minimodule units have been manufactured and verified for ecotoxicological research.
• Project phases including parameter determination and test substance selection are completed.
• The project is progressing towards system calibration with toxic substances.

Conclusions:

• The C.B.R.U. represents a significant advancement in aquatic microcosm technology for ecotoxicology.
• The AToxMss project is successfully developing a robust platform for multispecies aquatic ecotoxicology.
• Upcoming calibration runs will validate the C.B.R.U.'s efficacy in assessing chemical impacts.