Respiration of individual copepod eggs
Copepod eggs can survive extended exposure to high levels of hydrogen sulfide when they become buried in coastal marine sediments. Few higher organisms can survive under these conditions and the preservation mechanism used by the eggs is unknown.
It has not previously been possible to measure the respiration rate of individual eggs. However, a research group at Roskilde University Center, Denmark, lead by Dr. Benni Hansen has made the first respiration rate measurements with Unisense NanoRespiration System
Oxygen profiles were measured in wells containing one, three, and 10 eggs. From these profiles, oxygen respiration rates were calculated. These calculations and plottings are automated by the Unisense Profile Analysis program.
High-resolution on-line measurements enable researchers to follow the development in respiration rate during the incubation period. This allows the researcher to evaluate the metabolic effect of adding toxic substances to the assay organism. The monitoring can be performed with a very high temporal resolution.