Biotesting of water toxicity according to the ratio of microalgae consumption by daphnia detected with chlorophyll fluorescence

Маторин, Д. Н.; Bratkovskaya, L. B.; Yakovleva, O. V.; Венедиктов, П.С.

doi:10.3103/s0096392509030067

Cited by 6 publications

(2 citation statements)

References 2 publications

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“…The use of various physiological endpoints in daphnids is considered as an inexpensive and simple alternative, the criterion of which corresponds to rule 3R (replacement, reduction, refinement) [30]. Toxicants, including heavy metals, can lead to inhibition of chlorella uptake, and this effect depends on pollutant concentration [31].…”

Section: Introductionmentioning

confidence: 99%

The effect of manganese ions (II) on representatives of aquatic biota

Kosarev

Ivanov

Kamenets³

2022

IOP Conf. Ser.: Earth Environ. Sci.

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The work is devoted to the consideration of the peculiarities of the impact of manganese (II) on representatives of freshwater biota. Manganese plays an important role in the aquatic environment, since it determines the course of the most important metabolic processes in hydrobiont organisms of varying degrees of organization. The analysis of processes involving manganese has shown that the main chemical factors affecting the accumulation of manganese in the aquatic environment are anaerobic biochemical processes caused by active silting of the riverbed due to the washout of organic substances from agricultural fields. The use of various physiological endpoints in daphnids is considered as an inexpensive and simple alternative, the criterion of which corresponds to the rule “replacement, reduction, refinement”. It has been shown that manganese (II) ions in the concentration range of 0.1-1000 LOCvr do not have an acute toxic effect on D. magna crustaceans, chronic toxicity is manifested in samples with concentrations of more than 10 LOCvr. The acute toxicity of solutions of manganese (II) salts in relation to S. Quadricauda was revealed by the change in the fluorescence level of microalgae at a concentration of Mn2+ from 0.05 mg/l.

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Section: Introductionmentioning

confidence: 99%

The effect of manganese ions (II) on representatives of aquatic biota

Kosarev

Ivanov

Kamenets³

2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…In order to evaluate toxicity more efficiently and more easily, it is needed the acute method which can assess not only lethality but also various physiological responses of D. magna. Some of D. magna test designs based on feeding activity of daphnids were reported, such as counting method of labeled yeast cell taken and image analyzing method of fluorescent beads taken [2][3][4]. It is known that, the rate of filtration measured either as ingestion rate or as the rate of movement of thoracic appendages above incipient limiting concentration was no longer proportional to concentration but remained constant [3].…”

Section: Introductionmentioning

confidence: 99%

Developing the Acute Bioassay on Suppression of <i>Daphnia magna</i> Filtration by Fluorescence Measurement

Ginatullina

Yamagata

Kamaya

2021

J. of Wat. & Envir. Tech.

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The results of acute test on suppression of Daphnia magna filtration activity for one toxicant (K 2 Cr 2 O 7 , ZnSO 4 and MnSO 4 ) were applied to carry out acute binary tests for 3 binary solutions: "Cr-Mn", "Cr-Zn" and "Cr-Zn", where the daphnids were exposed for 1, 2, 3, 4 and 5 hs. While the level of toxicity manifested by the "Cr-Mn" binary systems was lower than "additive", the results that were observed in the binary solution of "Cr-Zn", especially for the shorter exposure time of 1-3 hours, showed toxicity above "additive". A nearly "additive effect" was observed in the binary solution of "Zn-Mn". We supposed that the theory of metals competing for binding to biotic ligands or any yet unidentified physiological interactions of the metals could explain the toxicity effect on filtration activity of D. magna exposed in three binary solutions. So, the more-than-additive effect for the "Cr-Zn" binary system may indicate that Zn (II) demonstrated its high ability building up protein complexes due to competition with Cr (VI). The less-than-additive toxicity for the "Cr-Mn" solution likely revealed the fact that bioavailability of Cr (VI) to D. magna was reduced in the presence of Mn (II).

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Xenobiotics as a contemporary threat to surface waters

Piwowarska

Kiedrzyńska

2022

Ecohydrology & Hydrobiology

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Biotesting of water toxicity according to the ratio of microalgae consumption by daphnia detected with chlorophyll fluorescence

Cited by 6 publications

References 2 publications

The effect of manganese ions (II) on representatives of aquatic biota

The effect of manganese ions (II) on representatives of aquatic biota

Developing the Acute Bioassay on Suppression of <i>Daphnia magna</i> Filtration by Fluorescence Measurement

Xenobiotics as a contemporary threat to surface waters

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