Efficacy of hydrogen peroxide to control saprolegniasis on channel catfish (Ictalurus punctatus) eggs

Rach, Jeff J.; Valentine, James J.; Schreier, Theresa M.; Gaikowski, Mark P.; Crawford, Tommie

doi:10.1016/j.aquaculture.2004.06.007

Cited by 35 publications

(25 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, a need for alternative disinfectants has emerged. Hydrogen peroxide (HP) has shown promising results in the treatment of a number of di¡erent parasites and fungus on ¢sh and ¢sh eggs (Lilley & Inglis 1997;Montgomery-Brock, Sato, Brock & Tamaru 2001;Rach, Valentine, Schreier, Gaikowski & Crawford 2004;Heinecke & Buchmann 2009). An advantage of using HP over other chemotherapeutic agents is that the end-products consist of non-toxic substances (Block 1991).…”

Section: Introductionmentioning

confidence: 99%

Degradation and effect of hydrogen peroxide in small-scale recirculation aquaculture system biofilters

Møller

Arvin

Pedersen

2009

Aquaculture Research

View full text Add to dashboard Cite

From an environmental point of view, hydrogen peroxide (HP) has beneficial attributes compared with other disinfectants in terms of its ready degradation and neutral by‐products. The rapid degradation of HP can, however, cause difficulties with regard to safe and efficient water treatment when applied in different systems. In this study, we investigated the degradation kinetics of HP in biofilters from water recirculating aquaculture systems (RAS). The potential effect of HP on the nitrification process in the biofilters was also examined. Biofilter elements from two different pilot‐scale RAS were exposed to various HP treatments in batch experiments, and the HP concentration was found to follow an exponential decay. The biofilter ammonia and nitrite oxidation processes showed quick recuperation after exposure to a single dose of HP up to 30 mg L−1. An average HP concentration of 10–13 mg L−1 maintained over 3 h had a moderate inhibitory effect on the biofilter elements from one of the RAS with relatively high organic loading, while the nitrification was severely inhibited in the pilot‐scale biofilters from the other RAS with a relatively low organic loading. A pilot‐scale RAS, equipped with two biofilter units, both a moving‐bed (Biomedia) and a fixed‐bed (BIO‐BLOK®) biofilter, was subjected to an average HP concentration of ∼12 mg L−1 for 3 h. The ammonium‐ and nitrite‐degrading efficiencies of both the Biomedia and the BIO‐BLOK® filters were drastically reduced. The filters had not reverted to pre‐HP exposure efficiency after 24 h, suggesting a possible long‐term impact on the biofilters.

show abstract

Section: Introductionmentioning

confidence: 99%

Degradation and effect of hydrogen peroxide in small-scale recirculation aquaculture system biofilters

Møller

Arvin

Pedersen

2009

Aquaculture Research

View full text Add to dashboard Cite

show abstract

“…All four treatments proved effective in increasing the percent hatch, and all treatments but diquat bromide (Rach et al 1998(Rach et al , 2004Small and Wolters 2003;Small 2004;Mitchell et al 2009) suggests that H 2 O 2 is effective under a variety of egg hatching conditions. The further testing of H 2 O 2 in once-daily and twice-daily static-bath immersion, continuous-flow immersion, and immersion-flush applications may result in treatment protocols that increase percent hatch and reduce fungal growth.…”

Section: Resultsmentioning

confidence: 96%

“…Some of the rates chosen for the treatments in this study differed from the optimal treatment rates determined in other studies that used different test systems and modes of chemical delivery (Rach et al 1998(Rach et al , 2004Small and Wolters 2003) and from the FDA-labeled rates for use on warmwater finfish eggs. A valid comparison can be made of the treatments in one test system where they are subjected to the same test conditions.…”

Section: Resultsmentioning

confidence: 99%

“…Rach et al (1998Rach et al ( , 2004 reported that daily 15-min, continuous-flow immersions (i.e., chemical is administered at a constant rate to the incoming water) with H 2 O 2 at 1,000 mg/L in small aquaria (egg density ¼ 25-30 g/L) and at 750 mg/L in egg hatching jars (egg density ¼ 130 g/L) produced 78% and 69% hatch survival (19% and 44% for controls), respectively; fungus control was reported in the 1998 study. At the other extreme, Small and Wolters (2003) showed that daily immersion-flush treatments (1.2 water exchanges/ h) with H 2 O 2 at 70 mg/L in troughs (egg density ¼ 1 g/ L) produced the highest hatch percentage (68% versus 24% for controls).…”

mentioning

confidence: 99%

See 1 more Smart Citation

Comparison of Percent Hatch and Fungal Infestation in Channel Catfish Eggs after Copper Sulfate, Diquat Bromide, Formalin, and Hydrogen Peroxide Treatment

et al. 2010

View full text Add to dashboard Cite

Reduced survival of fish eggs is often a result of infestation with fungi Saprolegnia spp. However, timely chemical treatments often limit these infestations and increase survival. The effect of copper sulfate pentahydrate (CSP; 10 mg of CSP/L of water), diquat bromide (25 mg of diquat cation/L), formalin (433 mg/L), and hydrogen peroxide (H2O2; 250 mg/L) on percent hatch and fungal infestation in eggs of channel catfish Ictalurus punctatus was compared in two identical trials (five replicates for each chemical treatment per trial). The percent hatch in all chemical treatments was significantly better than percent hatch of the controls. The amount of fungal coverage on egg masses treated with CSP, formalin, and H2O2 was significantly less than that observed on the controls. Although not statistically different from the other treatments, H2O2 at 250 mg/L exhibited the highest average percent hatch (64%; control hatch = 34%), the lowest fungal coverage (1.5 cm; control coverage = 7.2 cm), and the lowest occurrence of fungi (50%; control occurrence = 100%) among the treatments.

show abstract

“…Some Oomycetes can infect amphibians and fishes; others are important pathogens of aquatic invertebrates (Alderman, 1982;Willoughby, 1994;Noga, 2000). There were several reports on the pathogenecity of freshwater molds especially Saprolegnia species to fish (Darwish et al, 2000;Madetoja et al, 2000;Noga, 2000;Lategana et al, 2004;Racha et al, 2004;Udomkusonsri and Noga, 2005), few studies on crustaceans (Soderhall et al, 1991;Dieguez-Uribeondo et al, 1994) and seldom reports on leeches (Kallil et al, 1991;Gouda and Moharram, 2006).…”

Section: Introductionmentioning

confidence: 95%

A novel Salifa–Saprolegnia association

Gouda

Moharram

2009

Journal of Invertebrate Pathology

View full text Add to dashboard Cite

Efficacy of hydrogen peroxide to control saprolegniasis on channel catfish (Ictalurus punctatus) eggs

Cited by 35 publications

References 7 publications

Degradation and effect of hydrogen peroxide in small-scale recirculation aquaculture system biofilters

Degradation and effect of hydrogen peroxide in small-scale recirculation aquaculture system biofilters

Comparison of Percent Hatch and Fungal Infestation in Channel Catfish Eggs after Copper Sulfate, Diquat Bromide, Formalin, and Hydrogen Peroxide Treatment

A novel Salifa–Saprolegnia association

Contact Info

Product

Resources

About