Hydrogen peroxide as a mitigation against Microcystis sp. bloom

Pok Him Ng; Tzu Hsuan Cheng; Ka Yan Man; Liqing Huang; Ka Po Cheng; Kwok Zu Lim; Chi Ho Chan; Maximilian Ho Yat Kam; Ju Zhang; Ana Rita Pinheiro Marques; Sophie St-Hilaire

doi:10.1016/j.aquaculture.2023.739932

Hydrogen peroxide as a mitigation against Microcystis sp. bloom

Pok Him Ng^*, Tzu Hsuan Cheng, Ka Yan Man, Liqing Huang, Ka Po Cheng, Kwok Zu Lim, Chi Ho Chan, Maximilian Ho Yat Kam, Ju Zhang, Ana Rita Pinheiro Marques, Sophie St-Hilaire

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

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Abstract

Microcystis sp. is a harmful cyanobacterial species commonly seen in earthen ponds. The overgrowth of these algae can lead to fluctuations in water parameters, including DO and pH. Also, the microcystins produced by these algae are toxic to aquatic animals. This study applied hydrogen peroxide (7 mg/L) to treat Microcystis sp. in a laboratory setting and in three earthen pond trials. In the lab we observed a 64.7% decline in Microcystis sp. And in our earthen pond field experiments we measured, on average, 43% reductions in Microcystis sp. cell counts within one hour. The treatment was found to eliminate specifically Microcystis sp. and did not reduce the cell count of the other algae species in the pond. A shift of the algae community towards the beneficial algae was also found post-treatment. Lastly, during the pond trials, the gill status of Tilapia and Giant tiger prawn were not affected by the H₂O₂ treatment suggesting this may be a good mitigation strategy for reducing cyanobacteria in pond aquaculture. © 2023 The Authors. Published by Elsevier B.V.

Original language	English
Article number	739932
Journal	Aquaculture
Volume	577
Online published	26 Jul 2023
DOIs	https://doi.org/10.1016/j.aquaculture.2023.739932
Publication status	Published - 15 Dec 2023

Research Keywords

Aquaculture
Harmful algal bloom
Pond water
Hydrogen peroxide

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UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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title = "Hydrogen peroxide as a mitigation against Microcystis sp. bloom",

abstract = "Microcystis sp. is a harmful cyanobacterial species commonly seen in earthen ponds. The overgrowth of these algae can lead to fluctuations in water parameters, including DO and pH. Also, the microcystins produced by these algae are toxic to aquatic animals. This study applied hydrogen peroxide (7 mg/L) to treat Microcystis sp. in a laboratory setting and in three earthen pond trials. In the lab we observed a 64.7% decline in Microcystis sp. And in our earthen pond field experiments we measured, on average, 43% reductions in Microcystis sp. cell counts within one hour. The treatment was found to eliminate specifically Microcystis sp. and did not reduce the cell count of the other algae species in the pond. A shift of the algae community towards the beneficial algae was also found post-treatment. Lastly, during the pond trials, the gill status of Tilapia and Giant tiger prawn were not affected by the H2O2 treatment suggesting this may be a good mitigation strategy for reducing cyanobacteria in pond aquaculture. {\textcopyright} 2023 The Authors. Published by Elsevier B.V. ",

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T1 - Hydrogen peroxide as a mitigation against Microcystis sp. bloom

AU - Ng, Pok Him

AU - Cheng, Tzu Hsuan

AU - Man, Ka Yan

AU - Huang, Liqing

AU - Cheng, Ka Po

AU - Lim, Kwok Zu

AU - Chan, Chi Ho

AU - Kam, Maximilian Ho Yat

AU - Zhang, Ju

AU - Pinheiro Marques, Ana Rita

AU - St-Hilaire, Sophie

PY - 2023/12/15

Y1 - 2023/12/15

N2 - Microcystis sp. is a harmful cyanobacterial species commonly seen in earthen ponds. The overgrowth of these algae can lead to fluctuations in water parameters, including DO and pH. Also, the microcystins produced by these algae are toxic to aquatic animals. This study applied hydrogen peroxide (7 mg/L) to treat Microcystis sp. in a laboratory setting and in three earthen pond trials. In the lab we observed a 64.7% decline in Microcystis sp. And in our earthen pond field experiments we measured, on average, 43% reductions in Microcystis sp. cell counts within one hour. The treatment was found to eliminate specifically Microcystis sp. and did not reduce the cell count of the other algae species in the pond. A shift of the algae community towards the beneficial algae was also found post-treatment. Lastly, during the pond trials, the gill status of Tilapia and Giant tiger prawn were not affected by the H2O2 treatment suggesting this may be a good mitigation strategy for reducing cyanobacteria in pond aquaculture. © 2023 The Authors. Published by Elsevier B.V.

AB - Microcystis sp. is a harmful cyanobacterial species commonly seen in earthen ponds. The overgrowth of these algae can lead to fluctuations in water parameters, including DO and pH. Also, the microcystins produced by these algae are toxic to aquatic animals. This study applied hydrogen peroxide (7 mg/L) to treat Microcystis sp. in a laboratory setting and in three earthen pond trials. In the lab we observed a 64.7% decline in Microcystis sp. And in our earthen pond field experiments we measured, on average, 43% reductions in Microcystis sp. cell counts within one hour. The treatment was found to eliminate specifically Microcystis sp. and did not reduce the cell count of the other algae species in the pond. A shift of the algae community towards the beneficial algae was also found post-treatment. Lastly, during the pond trials, the gill status of Tilapia and Giant tiger prawn were not affected by the H2O2 treatment suggesting this may be a good mitigation strategy for reducing cyanobacteria in pond aquaculture. © 2023 The Authors. Published by Elsevier B.V.

KW - Aquaculture

KW - Harmful algal bloom

KW - Pond water

KW - Hydrogen peroxide

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Hydrogen peroxide as a mitigation against Microcystis sp. bloom

Abstract

Research Keywords

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Corrigendum to “Hydrogen peroxide as a mitigation against Microcystis sp. Bloom” [Aquaculture, Volume 577, 15 December 2023, 739932]

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