Prevention of fungal infestation of rainbow trout (Oncorhynchus mykiss) eggs using UV irradiation of the hatching water

Heikkinen, Jouni; Mustonen, Satu; Eskelinen, Päivi; Sundberg, Lotta‐Riina; Wright, Atte von

doi:10.1016/j.aquaeng.2013.01.001

Cited by 8 publications

(12 citation statements)

References 60 publications

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“…Treatment of inlet hatchery water with high dose (400 mWs cm −2 ) of UV irradiation led to a significant decrease in the mortality of rainbow trout ( O. mykiss ) eggs at the eyed‐egg stage, which is in agreement with our previous report (Heikkinen et al . ). UV‐dose decreased during the trial from 400 mWs cm −2 to 120 mWs cm −2 due to accumulation of organic substance on the surface of the UV‐irradiation lamp.…”

Section: Discussionmentioning

confidence: 97%

“…Protective bacterial strains used in this study were isolated from the surfaces of living rainbow trout ( O. mykiss ) eggs incubated in the high UV‐dose (400 mWs cm −2 ) irradiated inlet water of the previous study (Heikkinen et al . ). Pseudomonas have been proven a common bacterial genus on the normal rainbow trout egg (Barker, Smith & Bromage ; Bergmann, Brakke & Barnes ), although in this study Albidiferax was the most common genus in the sequencing analysis of adhesion trial control group.…”

Section: Discussionmentioning

confidence: 97%

“…with ozone, H 2 O 2 or UV. Our recent results (Heikkinen, Mustonen, Eskelinen, Sundberg & Von Wright ) showed that strong UV irradiation of inlet water (400 mWs cm −2 ) decreased Saprolegnia infection on rainbow trout eggs and the load of competitive bacteria to eggs. UV treatment of the inlet water significantly reduced mortality of rainbow trout ( Oncorhynchus mykiss ) eggs (Heikkinen et al .…”

Section: Introductionmentioning

confidence: 92%

“…UV treatment of the inlet water significantly reduced mortality of rainbow trout ( Oncorhynchus mykiss ) eggs (Heikkinen et al . ).…”

Section: Introductionmentioning

confidence: 97%

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Suppression ofSaprolegniainfections in rainbow trout (Oncorhynchus mykiss) eggs using protective bacteria and ultraviolet irradiation of the hatchery water

et al. 2014

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Since formalin is widely used in prevention of Saprolegnia infections in salmonid fish hatcheries, there is a need for more environmentally safe treatment methods. Therefore, we screened 360 bacterial isolates against their ability to antagonize the growth of Saprolegnia parasitica hyphae in vitro, and best strains were selected according to their antagonistic properties and colonization capability on rainbow trout egg surface. Protective bacterial cultures of Pseudomonas sp. M162, Pseudomonas sp. M174 and Janthinobacterium M169 were tested for prevention of Saprolegnia sp. infections during incubation trials of rainbow trout (Oncorhynchus mykiss) eggs with UV irradiated (400 mWs cm−2) and non‐treated inlet water. UV irradiation of inlet water significantly decreased mortality during the incubation. Lowest mortalities were observed in protective culture treated groups incubated with UV‐irradiated inlet water. UV irradiation increased the dominance of the main bacterial colonizers and variation in the bacterial species diversity between the experimental units.

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 92%

“…UV treatment of the inlet water significantly reduced mortality of rainbow trout ( Oncorhynchus mykiss ) eggs (Heikkinen et al . ).…”

Section: Introductionmentioning

confidence: 97%

See 2 more Smart Citations

Suppression ofSaprolegniainfections in rainbow trout (Oncorhynchus mykiss) eggs using protective bacteria and ultraviolet irradiation of the hatchery water

et al. 2014

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“…However, malachite green was banned worldwide in year 2002 owing of its harmful effects on animal health (Van West 2006). Exposure of incoming hatchery water, by U.V radiation significantly reduce trout egg loss in hatchery (Heikkinen et al, 2013). At the same time, studies has also revealed that ozone (Forneris et al, 2003), H 2 O 2 (Gaikowski et al, 1998) and UV radiation (Heikkinen et al, 2013) may decrease egg hatching percentage during trout eggs incubation.…”

Section: Issn: 2319-7706 Volume 6 Number 1 (2017) Pp 697-706mentioning

confidence: 89%

Evaluation of Pyrus pashia Leaf Extract as a Disinfectant for Rainbow Trout (Oncorhynchus mykiss) Fertilised Eggs

Chandra¹,

Mallik²,

Patiyal³

2017

Int.J.Curr.Microbiol.App.Sci

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Infections may select for filial cannibalism by impacting egg survival in interactions with water salinity and egg density

Lehtonen

Kvarnemo

2015

Oecologia

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In aquatic environments, externally developing eggs are in constant contact with the surrounding water, highlighting the significance of water parameters and pathogens for egg survival. In this study we tested the impact of water salinity, egg density and infection potential of the environment on egg viability in the sand goby (Pomatoschistus minutus), a small fish that exhibits paternal egg care and has a marine origin, but which in the Baltic Sea lives in brackish water. To manipulate the infection potential of the environment, we added either a Saprolegnia infection vector into UV-filtered water or a fungicide into natural Baltic Sea water. Saprolegnia are widely spread water moulds that are a key cause of egg mortality in aquatic organisms in fresh- and brackish water. We found that increased water salinity indeed decreased the egg infection rate and had a positive effect on egg viability, while high egg density tended to have the opposite effect. However, the different factors influenced egg viability interactively, with a higher egg density having negative effects at low, but not in high, salinity. Thus, the challenges facing marine organisms adapting to lower salinity levels can be amplified by Saprolegnia infections that reduce egg survival in interaction with other environmental factors. Our results support the hypothesis that suppressing egg infections is an important aspect of parental care that can select for filial cannibalism, a common but poorly understood behaviour, especially in fish with parental care.

show abstract

Prevention of fungal infestation of rainbow trout (Oncorhynchus mykiss) eggs using UV irradiation of the hatching water

Cited by 8 publications

References 60 publications

Suppression ofSaprolegniainfections in rainbow trout (Oncorhynchus mykiss) eggs using protective bacteria and ultraviolet irradiation of the hatchery water

Suppression ofSaprolegniainfections in rainbow trout (Oncorhynchus mykiss) eggs using protective bacteria and ultraviolet irradiation of the hatchery water

Evaluation of Pyrus pashia Leaf Extract as a Disinfectant for Rainbow Trout (Oncorhynchus mykiss) Fertilised Eggs

Infections may select for filial cannibalism by impacting egg survival in interactions with water salinity and egg density

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