Effects of Algicidal Macrophyte Metabolites on Cyanobacteria, Microcystins, Other Plankton, and Fish in Microcosms
Abstract
:1. Introduction
2. Results
2.1. Phytoplankton
2.2. Cyanotoxins
2.3. Chlorophyll-a
2.4. Salt Content, Nutrients, and Physical Parameters of Water
2.5. Zooplankton
2.6. Fish
3. Discussion
4. Materials and Methods
4.1. Experiment Design
4.2. Algicide
4.3. Samples Collection and Laboratory Procedures
4.4. Chemical Methods and Protocols
4.5. Statistics
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Treatment | ||||
---|---|---|---|---|
I | II | III | IV | |
Phytoplankton, mg/L | 1.04 ± 0.42 | 0.93 ± 0.43 | 1.04 ± 0.41 | 0.84 ± 0.34 |
Cyanobacteria, mg/L | 4.29 ± 0.21 | 4.25 ± 0.18 | 4.34 ± 0.23 | 4.69 ± 0.34 |
Zooplankton, ind./L | 616 ± 113 | 613 ± 156 | 636 ± 139 | 659 ± 156 |
Fish 1 | No | No | 15 | 15 |
Algicide 2, mg/L | No | 14 | No | 14 |
Date (Day) | I | II | III | IV |
---|---|---|---|---|
19–26 July (7) | Aphanizomenon flos-aquae Microcystis aeruginosa Aulacoseira granulata | |||
29 July (10) | A. flos-aquae | A. flos-aquae Cryptomonas spp. | A. flos-aquae M. aeruginosa | M. aeruginosa Mougeotia sp. A. granulata |
2 August (14) | Cryptomonas spp. Dolichospermum spiralis A. flos-aquae | D. spiralis A. flos-aquae Cryptomonas spp. | D. spiralis A. flos-aquae M. aeruginosa | |
5 August (17) | A. flos-aquae Cryptomonas spp. D. spiralis | A. flos-aquae Cryptomonas spp. | A. flos-aquae Cryptomonas spp. D. spiralis | A. flos-aquae D. spiralis |
9 August (21) | A. flos-aquae | A. flos-aquae Cryptomonas ssp. | A. flos-aquae | A. flos-aquae M. aeruginosa D. spiralis |
12 August (24) | A. flos-aquae Cryptomonas spp. D. spiralis | Cryptomonas spp. | D. spiralis A. flos-aquae Staurastrum sp. | D. spiralis Mougeotia sp. Staurastrum sp. |
16 August (28) | A. flos-aquae Cryptomonas spp. D. spiralis | Cryptomonas ssp. Mougeotia sp. A. flos-aquae | D. spiralis A. flos-aquae Staurastrum sp. | D. spiralis A. flos-aquae Staurastrum sp. Mougeotia sp. |
19 August (31) | A. flos-aquae D. spiralis | Cryptomonas spp. Mougeotia sp. A. flos-aquae | D. spiralis | Mougeotia sp. Staurastrum sp. A. flos-aquae |
Period | Value | Treatment | |||
---|---|---|---|---|---|
I | II | III | IV | ||
Start | Mean 95%CI | 4.29 a 0.12 | 4.25 a 0.10 | 4.27 a 0.10 | 4.82 a 0.08 |
Mid-exposure | Mean 95%CI | 6.31 b 1.24 | 6.09 b 0.85 | 3.44 a 0.66 | 2.75 a 0.15 |
End | Mean 95% CI | 4.10 c 1.36 | 0.60 a 0.17 | 2.78 b 1.39 | 0.83 a 0.20 |
MC Forms | Period of Exposure | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Start | Mid-Exposure | End | ||||||||||
I | II | III | IV | I | II | III | IV | I | II | III | IV | |
Mean concentration, µg/L 95% CI | 9.34 a 0.72 | 9.76 a 0.34 | 12.30 a 1.90 | 12.38 a 1.62 | 4.75 b 0.35 | 1.28 a 0.17 | 8.50 c 1.25 | 5.43 b 0.71 | 2.31 b 0.34 | 0.51 a 0.12 | 7.08 c 0.67 | 6.04 c 0.21 |
% MC-LR | 68.6 | 69.1 | 76.2 | 75.6 | 5.9 | 31.3 | 27.4 | 37.6 | 5.3 | 28.3 | 9.7 | 20.7 |
% [D-Asp3]MC-LR | 3.6 | 3.5 | 3.3 | 3.5 | 6.7 | 7.2 | 5.1 | 6.7 | 9.6 | 7.3 | 6.4 | 8.1 |
% [D-Glu-OCH36]MC-LR | 1.0 | - | 1.1 | 1.2 | - | - | 0.3 | 0.4 | - | - | - | - |
% MC-YR | 20.5 | 20.4 | 13.3 | 13.0 | 76.6 | 51.3 | 61.5 | 48.3 | 76.0 | 48.8 | 80.5 | 66.7 |
% [Dha7]MC-YR | 5.7 | 5.9 | 5.0 | 5.6 | 10.9 | 10.0 | 5.5 | 6.8 | 9.0 | 12.8 | 3.4 | 4.3 |
% MC-LW | 0.2 | 0.2 | 0.3 | 0.3 | - | 0.1 | 0.2 | 0.2 | - | - | - | - |
% [D-Asp3]MC-RR | 0.1 | - | 0.1 | 0.1 | - | - | - | - | - | - | - | - |
Variables | I | II | III | IV |
---|---|---|---|---|
Na+ | 3.15 (2.43–3.84) | 3.26 (2.43–3.86) | 3.23 (2.33–3.82) | 3.16 (2.23–3.80) |
K+ | 2.97 (2.33–3.48) | 3.00 (2.31–3.44) | 3.01 (2.30–3.47) | 3.07 (2.40–3.60) |
Ca2+ | 23.65 (17.63–30.98) | 24.46 (16.97–31.11) | 22.89 (15.61–30.78) | 25.25 (16.29–32.01) |
Mg2+ | 6.63 (4.85–8.29) | 6.80 (4.76–8.35) | 6.67 (4.42–8.30) | 6.70 (4.33–8.23) |
Cl− | 3.49 (2.67–4.06) | 3.48 (2.45–4.22) | 3.36 (2.51–3.99) | 3.35 (2.44–3.93) |
SO42− | 3.61 (1.64–4.84) | 3.71 (1.71–5.24) | 3.51 (1.31–4.67) | 3.61 (1.93–4.61) |
HCO3− | 107.57 (80.55–138.72) | 111.36 (78.31–139.53) | 106.07 (72.20–133.02) | 113.86 (75.78–142.79) |
PO43− | 0.03 (0.01–0.08) | 0.02 (0.01–0.05) | 0.02 (0.01–0.03) | 0.02 (0.01–0.03) |
Ptot | 0.05 (0.03–0.10) | 0.05 (0.03–0.07) | 0.07 (0.05–0.09) | 0.07 (0.04–0.08) |
Ntot | 1.07 (0.96–1.16) | 0.95 (0.91–0.98) | 1.25 (1.17–1.36) | 1.20 (1.09–1.43) |
O2 | 8.63 (6.55–9.88) | 8.20 (6.76–9.26) | 8.34 (6.65–9.36) | 7.63 (6.45–9.05) |
pH | 9.1 (8.8–9.3) | 9.1 (8.7–9.4) | 9.2 (8.8–9.4) | 8.9 (8.6–9.3) |
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Kurbatova, S.; Berezina, N.; Sharov, A.; Chernova, E.; Kurashov, E.; Krylova, Y.; Yershov, I.; Mavrin, A.; Otyukova, N.; Borisovskaya, E.; et al. Effects of Algicidal Macrophyte Metabolites on Cyanobacteria, Microcystins, Other Plankton, and Fish in Microcosms. Toxins 2023, 15, 529. https://doi.org/10.3390/toxins15090529
Kurbatova S, Berezina N, Sharov A, Chernova E, Kurashov E, Krylova Y, Yershov I, Mavrin A, Otyukova N, Borisovskaya E, et al. Effects of Algicidal Macrophyte Metabolites on Cyanobacteria, Microcystins, Other Plankton, and Fish in Microcosms. Toxins. 2023; 15(9):529. https://doi.org/10.3390/toxins15090529
Chicago/Turabian StyleKurbatova, Svetlana, Nadezhda Berezina, Andrey Sharov, Ekaterina Chernova, Evgeny Kurashov, Yulia Krylova, Igor Yershov, Alexander Mavrin, Natalia Otyukova, Elena Borisovskaya, and et al. 2023. "Effects of Algicidal Macrophyte Metabolites on Cyanobacteria, Microcystins, Other Plankton, and Fish in Microcosms" Toxins 15, no. 9: 529. https://doi.org/10.3390/toxins15090529