Mark Gaikowski (Former Employee)
Science and Products
Filter Total Items: 73
Chronic toxicity of hydrogen peroxide to Daphnia magna in a continuous exposure, flow-through test system Chronic toxicity of hydrogen peroxide to Daphnia magna in a continuous exposure, flow-through test system
A flow-through, continuous exposure test system was developed to expose Daphnia magna to an unstable compound. 35% Perox-Aid?? is a specially formulated hydrogen peroxide (a highly oxidative chemical) product approved for use in U.S. aquaculture and therefore has the potential to be released from aquaculture facilities and pose a risk to aquatic invertebrates. The study objective was to...
Authors
J.R. Meinertz, Shari L. Greseth, M.P. Gaikowski, L.J. Schmidt
Ammonia causes decreased brain monoamines in fathead minnows (Pimephales promelas) Ammonia causes decreased brain monoamines in fathead minnows (Pimephales promelas)
Hyperammonemia, arising from variety of disorders, leads to severe neurological dysfunction. The mechanisms of ammonia toxicity in brain are not completely understood. This study investigated the effects of ammonia on monoaminergic systems in brains of fathead minnows (Pimephales promelas). Fish serve as a good model system to investigate hyperammonemic effects on brain function since no...
Authors
Patrick J. Ronan, Mark P. Gaikowski, Steven J. Hamilton, Kevin J. Buhl, Cliff H. Summers
Efficacy of formalin and hydrogen peroxide to increase survival of channel catfish infected with saprolegniasis Efficacy of formalin and hydrogen peroxide to increase survival of channel catfish infected with saprolegniasis
The efficacy of formalin and hydrogen peroxide to increase survival associated with external saprolegniasis on fingerlings of channel catfish Ictalurus punctatus was evaluated in four laboratory trials. Fungal epizootics were initiated according to procedures developed in a fungal-disease model. Fish were abraded with a dremel tool and then placed in an aerated static infection tank...
Authors
Jeff J. Rach, Theresa M. Schreier, Mark P. Gaikowski, Susan M. Schleis
Efficacy of hydrogen peroxide versus formalin treatments to control mortality associated with saprolegniasis on lake trout eggs Efficacy of hydrogen peroxide versus formalin treatments to control mortality associated with saprolegniasis on lake trout eggs
We compared the efficacy of hydrogen peroxide versus formalin treatments to control fungal infections on eggs of lake trout Salvelinus namaycush incubated at a hatchery in Wisconsin. Four strains of lake trout eggs were incubated in six vertical-flow Heath incubators; three replicate incubators for each chemical. Each incubator had 13 trays containing approximately 25,000-30,000 eggs...
Authors
J.J. Rach, S. Redman, D. Bast, M.P. Gaikowski
Use of hydrogen peroxide during incubation of landlocked fall Chinook salmon eggs in vertical-flow incubators Use of hydrogen peroxide during incubation of landlocked fall Chinook salmon eggs in vertical-flow incubators
Six different hydrogen peroxide treatment regimes were evaluated in a series of three trials with landlocked fall Chinook salmon Oncorhynchus tshawytscha eggs incubated in vertical-flow incubators. Six daily 15-min hydrogen peroxide treatment regimes (1,000 mg/L; 1,000 mg/L with a decrease to 500 mg/L during estimated blastopore formation; 2,000 mg/L; 2,000 mg/L with a decrease to 500 mg...
Authors
M. E. Barnes, M.P. Gaikowski
Validation of two dilution models to predict chloramine-T concentrations in aquaculture facility effluent Validation of two dilution models to predict chloramine-T concentrations in aquaculture facility effluent
Accurate estimates of drug concentrations in hatchery effluent are critical to assess the environmental risk of hatchery drug discharge resulting from disease treatment. This study validated two dilution simple n models to estimate chloramine-T environmental introduction concentrations by comparing measured and predicted chloramine-T concentrations using the US Geological Survey's Upper...
Authors
M.P. Gaikowski, W.J. Larson, J. J. Steuer, W.H. Gingerich
Science and Products
Filter Total Items: 73
Chronic toxicity of hydrogen peroxide to Daphnia magna in a continuous exposure, flow-through test system Chronic toxicity of hydrogen peroxide to Daphnia magna in a continuous exposure, flow-through test system
A flow-through, continuous exposure test system was developed to expose Daphnia magna to an unstable compound. 35% Perox-Aid?? is a specially formulated hydrogen peroxide (a highly oxidative chemical) product approved for use in U.S. aquaculture and therefore has the potential to be released from aquaculture facilities and pose a risk to aquatic invertebrates. The study objective was to...
Authors
J.R. Meinertz, Shari L. Greseth, M.P. Gaikowski, L.J. Schmidt
Ammonia causes decreased brain monoamines in fathead minnows (Pimephales promelas) Ammonia causes decreased brain monoamines in fathead minnows (Pimephales promelas)
Hyperammonemia, arising from variety of disorders, leads to severe neurological dysfunction. The mechanisms of ammonia toxicity in brain are not completely understood. This study investigated the effects of ammonia on monoaminergic systems in brains of fathead minnows (Pimephales promelas). Fish serve as a good model system to investigate hyperammonemic effects on brain function since no...
Authors
Patrick J. Ronan, Mark P. Gaikowski, Steven J. Hamilton, Kevin J. Buhl, Cliff H. Summers
Efficacy of formalin and hydrogen peroxide to increase survival of channel catfish infected with saprolegniasis Efficacy of formalin and hydrogen peroxide to increase survival of channel catfish infected with saprolegniasis
The efficacy of formalin and hydrogen peroxide to increase survival associated with external saprolegniasis on fingerlings of channel catfish Ictalurus punctatus was evaluated in four laboratory trials. Fungal epizootics were initiated according to procedures developed in a fungal-disease model. Fish were abraded with a dremel tool and then placed in an aerated static infection tank...
Authors
Jeff J. Rach, Theresa M. Schreier, Mark P. Gaikowski, Susan M. Schleis
Efficacy of hydrogen peroxide versus formalin treatments to control mortality associated with saprolegniasis on lake trout eggs Efficacy of hydrogen peroxide versus formalin treatments to control mortality associated with saprolegniasis on lake trout eggs
We compared the efficacy of hydrogen peroxide versus formalin treatments to control fungal infections on eggs of lake trout Salvelinus namaycush incubated at a hatchery in Wisconsin. Four strains of lake trout eggs were incubated in six vertical-flow Heath incubators; three replicate incubators for each chemical. Each incubator had 13 trays containing approximately 25,000-30,000 eggs...
Authors
J.J. Rach, S. Redman, D. Bast, M.P. Gaikowski
Use of hydrogen peroxide during incubation of landlocked fall Chinook salmon eggs in vertical-flow incubators Use of hydrogen peroxide during incubation of landlocked fall Chinook salmon eggs in vertical-flow incubators
Six different hydrogen peroxide treatment regimes were evaluated in a series of three trials with landlocked fall Chinook salmon Oncorhynchus tshawytscha eggs incubated in vertical-flow incubators. Six daily 15-min hydrogen peroxide treatment regimes (1,000 mg/L; 1,000 mg/L with a decrease to 500 mg/L during estimated blastopore formation; 2,000 mg/L; 2,000 mg/L with a decrease to 500 mg...
Authors
M. E. Barnes, M.P. Gaikowski
Validation of two dilution models to predict chloramine-T concentrations in aquaculture facility effluent Validation of two dilution models to predict chloramine-T concentrations in aquaculture facility effluent
Accurate estimates of drug concentrations in hatchery effluent are critical to assess the environmental risk of hatchery drug discharge resulting from disease treatment. This study validated two dilution simple n models to estimate chloramine-T environmental introduction concentrations by comparing measured and predicted chloramine-T concentrations using the US Geological Survey's Upper...
Authors
M.P. Gaikowski, W.J. Larson, J. J. Steuer, W.H. Gingerich