quality control is important for all kinds of aquaculture systems. Water
quality can be improved by various treatments and evaluated by use of reliable
monitoring tools and analysis. A number
of well-known chemical parameters are measured on a regular basis, however less
focus have been devoted to monitoring of microbial water quality. We recently developed
a new and simple assay that can assess the microbial activity in water samples
very fast. Compared to traditional measures of biological oxygen demand over 5
days (BOD5) this assay can be made in less than 2 hours (~ BOD0.1).
is required to document and further develop this new method, and several
research topics can be of relevance. These include but are not limited to:
Investigations of the potential effects of storage conditions on microbial
activity. Here it is interesting to test if storage (-time) of water samples a
-20 °C, 5 °C or room temperature affects the enzyme activity. The outcome of
this project will be of relevance for future sampling programs and can be
combined with other relevant parameters.
B: Use the method to quantify the effects of a given treatment (severe
disinfection, use of clay, foam fractionation or another treatment) on the
microbial activity in treated and untreated water samples.
C: Apply and modify the assay to evaluate bacterial colonization on surface.
D: Use the method to monitor evolution / succession of controlled microbial
communities in mesocosmos trials
E: Investigate microbial activity diurnal patterns and sink/sources in a
commercial aquaculture system.
F: Develop the method for plate readers or by us of a hydrogen peroxide sensor.