Determine the effect of Parasite-S (formalin), administered to control mortality from saprolegniasis, on the nitrogen oxidation efficiency of the biofilters of recirculating aquaculture systems (RAS) for freshwater finfish – Laboratory Studies

Publication Date

2016-04-28

Start Date

2014-04-16

End Date

2014-08-08

Fredricks, K.T., 2016, Determine the effect of Parasite-S (formalin), administered to control mortality from saprolegniasis, on the nitrogen oxidation efficiency of the biofilters of recirculating aquaculture systems (RAS) for freshwater finfish – Laboratory Studies: U.S Geological Survey data release, https://doi.org/10.5066/F7JD4V0K.

These data were collected to determine how bacterial nitification in recirculating aquaculture systems changes when exposed to formaldehyde. Formaldehyde is an approved aquaculture therapeutic drug, but not yet approved for use in RAS. These data will help support t data already accepted by the U.S. Food and Drug Administration (FDA) that demonstrated the effectiveness of Parasite-S (formalin) to (1) control mortality in freshwater-reared finfish eggs due to saprolegniasis, (2) in freshwater-reared salmonids due to bacterial gill disease, (3) in freshwater-reared coolwater finfish and channel catfish due to external columnaris disease, (4) in freshwater-reared finfish due to saprolegniasis and (5) reduce infestation density in freshwater-reared salmonids due to Gyrodactylus sp. The use of Parasite-S (formalin) for these label claims are designated by the FDA Office of Minor Use Minor Species (MUMS). This research supports expansion of the approved label of Parasite-S (formalin), a MUMS-designated drug, to control the aforementioned pathogens of freshwater finfish in RAS.

• Upper Midwest Environmental Sciences Center (UMESC)

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