Observations on Hydrogen Peroxide Control ofSaprolegniaspp. during Rainbow Trout Egg Incubation

Barnes, Michael E.; Ewing, Dean E.; Cordes, Rick J.; Young, Greg L.

doi:10.1577/1548-8640(1998)060<0067:oohpco>2.0.co;2

Cited by 52 publications

(46 citation statements)

References 5 publications

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“…However, just as they reported in their study, we observed no significant difference in overall egg survival whether eggs were treated with formalin or hydrogen peroxide at 1,000 mg/L. Relatively minor fungal infestations appear to have minimal impact on the survival of either fall Chinook salmon or rainbow trout eggs when treated with hydrogen peroxide (Barnes et al 1998;Arndt et al 2001). If fungal infestation and clumping occurs in other Chinook salmon eggs at rates similar to what we observed in this study when hydrogen peroxide treatments were reduced to 500 mg/L, the complete control of Saprolegnia spp.…”

Section: Discussionsupporting

confidence: 62%

“…Hydrogen peroxide has emerged as a possible alternative antifungal chemical for use on fish eggs (Marking et al 1994;Waterstrat and Marking 1995;Schreier et al 1996;Kitancharoen et al 1997;Barnes et al 1998;Arndt et al 2001). Waterstrat and Marking (1995) suggest that hydrogen peroxide is safer to use than formalin by hatchery personnel and that it appears to be innocuous for hatchery effluents (Huling et al 1990).…”

Section: Please Scroll Down For Articlementioning

confidence: 99%

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Use of Hydrogen Peroxide during Incubation of Landlocked Fall Chinook Salmon Eggs in Vertical‐Flow Incubators

Barnes

Gaikowski

2004

N American J Aquac

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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/L during estimated blastopore formation; 2,500 mg/L; and 2,500 mg/L with a decrease to 500 mg/L during estimated blastopore formation) were compared with daily 15‐min treatments of 1,667 mg/L of formalin. Mortality at egg eye‐up and fry hatch and from eye‐up to hatch was significantly greater in eggs receiving the 2,500‐mg/L hydrogen peroxide treatments throughout incubation and in those receiving 2,500 mg/L hydrogen peroxide with a decrease to 500 mg/L during blastopore formation than in either of the 1,000‐mg/L hydrogen peroxide treatment regimes or the formalin‐treated eggs in the first trial. No significant differences in mortality were observed among any of the treatments in the subsequent two trials with maximum hydrogen peroxide concentrations of 2,000 mg/L. Fungal infestations were observed primarily in the incubation trays treated at either of the 1,000‐mg/L hydrogen peroxide regimens, as well as in those trays whose treatment concentrations were dropped to 500 mg/L during blastopore formation. Infestations were not observed in any of the formalin‐treated trays. If minor fungal infestation is acceptable, then daily hydrogen peroxide treatments of 1,000 mg/L for 15 min would probably provide adequate fungal control compared with formalin usage.

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Section: Discussionsupporting

confidence: 62%

Section: Please Scroll Down For Articlementioning

confidence: 99%

Use of Hydrogen Peroxide during Incubation of Landlocked Fall Chinook Salmon Eggs in Vertical‐Flow Incubators

Barnes

Gaikowski

2004

N American J Aquac

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“…These dead ones were investigated if the cause was fungal infection De Pedro et al, 2007 . The number of mud crab larva surviving at each exposure duration was used to calculate the corrected mortality following Abbott s formula Barnes et al, 1998 : Pt = Po -Pc / 100 -Pc 100 Pt = percentage of corrected mortality % ; Po = mortality of test group; Pc = mortality of control group.…”

Section: Notementioning

confidence: 99%

In vitro Inhibitory Effects of Two Bornean Medicinal Wild Gingers against Pathogenic Lagenidium thermophilum Infected Mud Crab Scylla tranquebarica

et al. 2018

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The antifungal activity of two Bornean medicinal wild gingers Plagiostachys megacarpa and Zingiber phillippsiae were examined against Lagenidium thermophilum. The most active extract was P. megacarpa at concentration of 320 µg/mL inhibiting both hyphal growth and zoospore production of L. thermophilum in 24 h. Toxicity tests were conducted using mud crab Scylla tranquebarica larva. Bath treatment of P. megacarpa at concentrations of 320 and 640 µg/mL for 24 h were highly effective against hyphae and zoospores of the strain and it is non-toxic to mud crab larva. Therefore, crude extracts P. megacarpa may be used as alternative treatment for marine Oomycete infection of mud crab.

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“…bleach), povidone iodine, and hydrogen peroxide are widely used as disinfectants and for treatment of external parasites and pathogens (Ross & Smith 1972, Schäperclaus 1991, Bruno & Raynard 1994. Hydrogen peroxide and povidone iodine (1-ethyenyl-2-pyrrolidinone homopolymer and 1-vinyl-2-pyrrolidinone polymer iodine complex) have been recommended for prophylactic treatment of fish eggs (Chapman & Rogers 1992, Barnes et al 1998). Betadine ® , or PVP-iodine, is a commercial product that is 10% povidone-iodine (1% active iodine).…”

Section: Introductionmentioning

confidence: 99%

Physical and chemical effects on viability of the Myxobolus cerebralis triactinomyxon

Wagner¹,

Smith²,

Arndt³

et al. 2003

Dis. Aquat. Org.

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Various chemical and physical methods for destroying the triactinomyxon (TAM) stage of the myxozoan parasite Myxobolus cerebralis were tested. The fluorescent stains propidium iodide and fluorescein diacetate were used as indicators of viability. Physical variables tested included freezing, drying, high temperature, sonication, and pressure of 6.2 × 10 7 Pa (9000 psi). Chemicals evaluated included chlorine bleach, povidone-iodine, and hydrogen peroxide. Freezing or drying for 1 h was effective in killing TAMs, but pressure was not. Temperatures above 75°C for at least 5 min were also effective. Sonication with a laboratory instrument cleaner for 10 to 13 min killed and ruptured TAMs, resulting in <1.9% recovery. However, among the surviving TAMs, 39 to 58% were still viable. Chlorine concentrations of 130 ppm for 10 min were also effective at temperatures ranging from ice-water to room temperature and total hardness ranging from 10 to 500 mg l -1. Lethal concentrations of hydrogen peroxide and povidone-iodine (10% solution) were quite high: 10% for 10 min, and 50% (5000 ppm active iodine) for 60 min, respectively. The stain results indicating TAM death were verified in 2 tests in which rainbow trout Oncorhynchus mykiss were exposed to TAMs that had been either frozen for 1 h or treated with 66 ppm chlorine as sodium hypochlorite for 1 min. None of the fish exposed to the treated TAMs became infected. These results should provide disinfection guidelines to prevent transfer of M. cerebralis TAMs to uninfected areas and provide information on the risks of parasite transfer under various treatment scenarios. KEY WORDS: Myxobolus · Whirling disease · Disinfection · Chlorine · UltrasoundResale or republication not permitted without written consent of the publisher

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Observations on Hydrogen Peroxide Control ofSaprolegniaspp. during Rainbow Trout Egg Incubation

Cited by 52 publications

References 5 publications

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

<i>In vitro</i> Inhibitory Effects of Two Bornean Medicinal Wild Gingers against Pathogenic <i>Lagenidium thermophilum</i> Infected Mud Crab <i>Scylla tranquebarica</i>

Physical and chemical effects on viability of the Myxobolus cerebralis triactinomyxon

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