Metallothionein Induction as Indicator of Low Level Metal Exposure to Aquatic Macroinvertebrates from a Relatively Unimpacted River System in South Africa

Kemp, Mathilde; Wepener, Victor; Kock, K. N. de; Wolmarans, C.T.

doi:10.1007/s00128-017-2201-8

Cited by 11 publications

(6 citation statements)

References 21 publications

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“…Heavy metal pollution by anthropogenic activities is a major concern due to its impact on the environment and aquatic organisms [ 101 , 102 ]. Anthropogenic sources of metals include wastewater, traffic emissions, coal and oil combustion, industrial production, and many others [ 103 ]. Aquatic organisms counteract continuously with heavy metal ions also ingesting them from their diet, and their removal from tissues is not always constant as several factors come into play, such as time of exposure to the metal, temperature, metabolic activity, and metal chemistry.…”

Section: An Overview Of Emerging Contaminants Toxicitymentioning

confidence: 99%

Exploring the Impact of Contaminants of Emerging Concern on Fish and Invertebrates Physiology in the Mediterranean Sea

Impellitteri

Multisanti

Rusanova

et al. 2023

Biology

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In this historical context, the Mediterranean Sea faces an increasing threat from emerging pollutants such as pharmaceuticals, personal care products, heavy metals, pesticides and microplastics, which pose a serious risk to the environment and human health. In this regard, aquatic invertebrates and fish are particularly vulnerable to the toxic effects of these pollutants, and several species have been identified as bio-indicators for their detection. Among these, bivalve molluscs and elasmobranchs are now widely used as bio-indicators to accurately assess the effects of contaminants. The study focuses on the catshark Scyliorhinus canicular and on the Mediterranean mussel Mytilus galloprovincialis. The first one is a useful indicator of localised contamination levels due to its exposure to pollutants that accumulate on the seabed. Moreover, it has a high trophic position and plays an important role in the Mediterranean Sea ecosystem. The bivalve mollusc Mytilus galloprovincialis, on the other hand, being a filter-feeding organism, can acquire and bioaccumulate foreign particles present in its environment. Additionally, because it is also a species of commercial interest, it has a direct impact on human health. In conclusion, the increasing presence of emerging pollutants in the Mediterranean Sea is a serious issue that requires immediate attention. Bivalve molluscs and elasmobranchs are two examples of bio-indicators that must be used to precisely determine the effects of these pollutants on the marine ecosystem and human health.

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Section: An Overview Of Emerging Contaminants Toxicitymentioning

confidence: 99%

Exploring the Impact of Contaminants of Emerging Concern on Fish and Invertebrates Physiology in the Mediterranean Sea

Impellitteri

Multisanti

Rusanova

et al. 2023

Biology

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“…Benthic macroinvertebrates have been identified as useful bioindicators of REE contamination. − Given that the dominant macroinvertebrate in these streams, Zapada haysii , is common at ARD streams throughout the Colorado Rocky Mountains, this species is likely to be tolerant of low pH, trace metals and REEs. Even so, the Zn content in the macroinvertebrate biomass at the ARD impacted sites was in the range of that observed in macroinvertebrates exposed to low level metal contamination . The Zn content was also generally much higher than the REE content, as well as the Pb and Cd content.…”

Section: Resultsmentioning

confidence: 69%

“…Although the biological mechanisms for tolerance to REEs are not well-known, potential mechanisms are surface adsorption of the carapace of macroinvertebrates and sequestering of REEs in metallothionein proteins . In this context, for the headwater streams where natural ARD has been occurring for millennia, the potential impact of increasing REE concentrations may be limited for lower trophic levels.…”

Section: Resultsmentioning

confidence: 99%

Enhanced Rare Earth Element Mobilization in a Mountain Watershed of the Colorado Mineral Belt with Concomitant Detection in Aquatic Biota: Increasing Climate Change-Driven Degradation to Water Quality

Rue

McKnight

2021

Environ. Sci. Technol.

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In the western USA, one legacy of historic mining is drainage of acidic, metal-rich water generated by exposure to oxygen of sulfide minerals in mine workings, referred to as acid mine drainage (AMD). Streams receiving AMD and natural acid rock drainage (ARD) have a low pH, high dissolved metal concentrations, and extensive streambed oxide deposits. Recently, enhanced ARD generation in the Snake River watershed in the Rocky Mountains has been shown to be associated with warmer summer air temperatures, which has been attributed to expanding weathering fronts that promote oxidation due to earlier drying of shallow soils. In mountain watersheds where complex orogeny disseminated minerals throughout the landscape, weathering processes may also mobilize rare earth elements (REEs). We report that in the Snake River REEs are currently distributed in streams at concentrations ranging from 1 to 100 μg/L. Further, analysis of archived sample indicates that REE increases over time are also associated with increased summer air temperatures. In downstream reaches where the Snake River discharges into a water supply reservoir, colloidal and particulate metal oxides are abundant and sorptive processes may influence REE speciation. We also show that REEs accumulate in benthic invertebrates at concentrations comparable to toxic metals associated with ARD.

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“…Changes in the surface area of the lumen in the tissue are a mechanism to deal with the presence of large amounts of heavy metals and how to get rid of them through the process of cell decay (Morgan et al 2002). Heavy metal detoxification was performed by synthesizing MT as a form of self-defense and maintaining body homeostasis (Kemp et al 2017). Hertika et al (2018) reported a positive correlation among the levels of MT with metals Pb, Cd and Hg.…”

Section: Mt Levels In Cheumatopsyche Spmentioning

confidence: 99%

Metallothionein level in the larva of Cheumatopsyche sp. and the relationship between heavy metal concentration in Bone River, Gorontalo, Indonesia

et al. 2022

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Abstract. Kadim MK, Herawati FY, Arfiati D, Hertik AMS. 2022. Metallothionein level in the larva of Cheumatopsyche sp. and the relationship between heavy metal concentration in Bone River, Gorontalo, Indonesia. Biodiversitas 23: 5942-5950. This study aims to confirm that the larvae of Cheumatopsyche sp. contain a metal-binding protein, metallothionein, in their body and correlate it with heavy metal concentrations in the larval tissues and sediments in Bone River. Pb, Cd and Hg concentrations in sediment, tissue and Metallothionein (MT) levels were analyzed in several areas with different metal contamination. The Pb concentration in the sediment averaged 33.6 ppm; Hg 0.17 ppm; Cd 0.125 ppm. Total metals concentration in the whole body of Cheumatopsyche sp. ranged from 0.424 to 0.781, while the MT content ranged from 4637 to 6930 ng.g-1. The results revealed that the larvae could accumulate different metals and be more effective in accumulating Hg than Pb and Cd, regardless of the level of metal concentration in the sediment. Metal concentrations measured in Cheumatopsyche sp. showed a significant correlation with metals in the sediment. Metallothionein levels throughout the larval body showed differences in different areas of metal contamination and this correlated with the concentrations of Pb, Cd, and Hg measured in the larval tissue, thus reflecting their bioavailability in the environment. The results also showed that even under exposure to low metal concentrations, MT was still detectable in Cheumatopsyche sp. and proved to be a good predictor of metal accumulation.

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Metallothionein Induction as Indicator of Low Level Metal Exposure to Aquatic Macroinvertebrates from a Relatively Unimpacted River System in South Africa

Cited by 11 publications

References 21 publications

Exploring the Impact of Contaminants of Emerging Concern on Fish and Invertebrates Physiology in the Mediterranean Sea

Exploring the Impact of Contaminants of Emerging Concern on Fish and Invertebrates Physiology in the Mediterranean Sea

Enhanced Rare Earth Element Mobilization in a Mountain Watershed of the Colorado Mineral Belt with Concomitant Detection in Aquatic Biota: Increasing Climate Change-Driven Degradation to Water Quality

Metallothionein level in the larva of Cheumatopsyche sp. and the relationship between heavy metal concentration in Bone River, Gorontalo, Indonesia

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