Acute and Chronic Effects on Tadpoles (Lithobates catesbeianus) Exposed to Mining Tailings from the Dam Rupture in Mariana, MG (Brazil)

Girotto, Laís; Espíndola, Evaldo Luiz Gaeta; Gebara, Renan Castelhano; Freitas, Juliane Silberschmidt

doi:10.1007/s11270-020-04691-y

Cited by 21 publications

(6 citation statements)

References 53 publications

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“…The reuse of tailings is now an important research line, as discussed in [53,[56][57][58][59][60]. Especially in view of the scenario experienced in Brazil after the mediatized disasters of the Mariana (2015) and Brumadinho (2019) dams [61][62][63][64], it is crucial to find sustainable solutions for the closure stage. Therefore, in the present cases, the obtained results suggest the possibility of transforming an environmental liability into an economic outcome.…”

Section: Discussionmentioning

confidence: 99%

Mineralogical and Geochemical Characterization of Gold Mining Tailings and Their Potential to Generate Acid Mine Drainage (Minas Gerais, Brazil)

et al. 2020

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For more than 30 years, sulfide gold ores were treated in metallurgic plants located in Nova Lima, Minas Gerais, Brazil, and accumulated in the Cocoruto tailings dam. Both flotation and leaching tailings from a deactivated circuit, as well as roasted and leaching tailings from an ongoing plant, were studied for their acid mine drainage potential and elements’ mobility. Detailed characterization of both tailings types indicates the presence of fine-grain size material hosting substantial amounts of sulfides that exhibit distinct geochemical and mineralogical characteristics. The samples from the ongoing plant show high grades of Fe in the form of oxides, cyanide, and sulfates. Differently, samples from the old circuit shave higher average concentrations of Al (0.88%), Ca (2.4%), Mg (0.96%), and Mn (0.17%), present as silicates and carbonates. These samples also show relics of preserved sulfides, such as pyrite and pyrrhotite. Concentrations of Zn, Cu, Au, and As are higher in the tailings of the ongoing circuit, while Cr and Hg stand out in the tailings of the deactivated circuit. Although the obtained results show that the sulfide wastes do not tend to generate acid mine drainage, leaching tests indicate the possibility of mobilization of toxic elements, namely As and Mn in the old circuit, and Sb, As, Fe, Ni, and Se in the tailings of the plant that still works. This work highlights the need for proper management and control of tailing dams even in alkaline drainage environments such as the one of the Cocoruto dam. Furthermore, strong knowledge of the tailings’ dynamics in terms of geochemistry and mineralogy would be pivotal to support long-term decisions on wastes management and disposal.

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Section: Discussionmentioning

confidence: 99%

Mineralogical and Geochemical Characterization of Gold Mining Tailings and Their Potential to Generate Acid Mine Drainage (Minas Gerais, Brazil)

et al. 2020

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“…In the avoidance tests, tadpoles showed a similar behaviour regardless of the species, with an avoidance of 50% of the population at concentrations of 242.5 μg.L − 1 (in a 21-d exposure); two orders of magnitude more sensitive than lethality. More recently, Girotto et al (2020) exposed the amphibian species L. catesbeianus to mining tailings, using lethality and avoidance tests. Although no mortality was recorded in the lethality tests, for a 96-h exposure (even at 100% of a stock solution containing 50 g.L − 1 of mining tailings), avoidance occurred at the lowest concentrations (10, 25 and 50%; decreasing with the increasing concentrations) for 16-d and 20-d exposures times.…”

Section: Avoidance Vs Lethality In Tadpolesmentioning

confidence: 99%

Humane acute testing with tadpoles for risk assessment of chemicals: Avoidance instead of lethality

et al. 2022

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“…Regarding vertebrates, avoidance studies in multi-compartmented systems have mainly focused on amphibians and fish. Tadpoles of the amphibian Lithobates catesbeianus have proved to be able to avoid different chemicals such as copper [ 63 ], the fungicide pyrimethanil [ 64 ], the pesticide abamectin [ 65 ], the 2,4-dichlorophenoxyacetic acid herbicide [ 66 ], the herbicide diuron [ 67 ], and solution containing mining tailings [ 68 ]. Avoidance by tadpoles of Leptodactylus latrans and Pelophylax perezi of contamination by copper and pyrimethanil has been also described [ 63 , 64 ].…”

Section: Avoidance: a Repellency-driven Behavioral Responsementioning

confidence: 99%

“…In almost all these studies, avoidance was shown to be a highly sensitive response when compared with lethal or even sub-lethal (e.g., development, weight, and swimming behavior) responses (see previous citations). On the other hand, in some studies avoidance was not the most sensitive response when compared with, for instance, the responses of the: feeding rate, growth rate (SVL) and weight gain rate of tadpoles of Xenopus laevis exposed to gold nanorods [ 69 ] and the speed and distance responses after 16 days of exposure to mining tailings [ 68 ].…”

Section: Avoidance: a Repellency-driven Behavioral Responsementioning

confidence: 99%

“…Lethargy has also been observed in tadpoles exposed to copper, where at 200 µg/L the avoidance reached 80% but decreased due to moribundity [ 63 ]. Additionally, in tadpoles exposed to mining tailings, there was a tendency for individuals to avoid low concentrations, but not the compartments with highest levels of tailings [ 68 ]. In a study with the marine shrimps L. vannamei and P. varians (Redondo et al unpublished data ), it was observed that both are able to avoid toxic copper concentrations when exposed to a gradient; however, whereas L. vannamei showed signs of overexcitement when it was in a forced exposure, P. varians clearly displayed lethargy.…”

Section: The Higher the Toxicity The Higher The Repellency?mentioning

confidence: 99%

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Not Only Toxic but Repellent: What Can Organisms’ Responses Tell Us about Contamination and What Are the Ecological Consequences When They Flee from an Environment?

Araújo

Laissaoui

Silva

et al. 2020

Toxics

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The ability of aquatic organisms to sense the surrounding environment chemically and interpret such signals correctly is crucial for their ecological niche and survival. Although it is an oversimplification of the ecological interactions, we could consider that a significant part of the decisions taken by organisms are, to some extent, chemically driven. Accordingly, chemical contamination might interfere in the way organisms behave and interact with the environment. Just as any environmental factor, contamination can make a habitat less attractive or even unsuitable to accommodate life, conditioning to some degree the decision of organisms to stay in, or move from, an ecosystem. If we consider that contamination is not always spatially homogeneous and that many organisms can avoid it, the ability of contaminants to repel organisms should also be of concern. Thus, in this critical review, we have discussed the dual role of contamination: toxicity (disruption of the physiological and behavioral homeostasis) vs. repellency (contamination-driven changes in spatial distribution/habitat selection). The discussion is centered on methodologies (forced exposure against non-forced multi-compartmented exposure systems) and conceptual improvements (individual stress due to the toxic effects caused by a continuous exposure against contamination-driven spatial distribution). Finally, we propose an approach in which Stress and Landscape Ecology could be integrated with each other to improve our understanding of the threat contaminants represent to aquatic ecosystems.

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Acute and Chronic Effects on Tadpoles (Lithobates catesbeianus) Exposed to Mining Tailings from the Dam Rupture in Mariana, MG (Brazil)

Cited by 21 publications

References 53 publications

Mineralogical and Geochemical Characterization of Gold Mining Tailings and Their Potential to Generate Acid Mine Drainage (Minas Gerais, Brazil)

Mineralogical and Geochemical Characterization of Gold Mining Tailings and Their Potential to Generate Acid Mine Drainage (Minas Gerais, Brazil)

Humane acute testing with tadpoles for risk assessment of chemicals: Avoidance instead of lethality

Not Only Toxic but Repellent: What Can Organisms’ Responses Tell Us about Contamination and What Are the Ecological Consequences When They Flee from an Environment?

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