Detecting the effects of chronic metal exposure on benthic systems: Importance of biomarker and endpoint selection

Watson, Gordon; Pini, Jennifer; Richir, Jonathan; Michie, Laura A

doi:10.1016/j.aquatox.2020.105674

Cited by 7 publications

(2 citation statements)

References 73 publications

(105 reference statements)

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“…It has been observed at concentration usually found in coastal sediments that the benthic polychaete Alitta virens survival decreased as the Zn concentration increased. Similarly, significant changes were observed in feeding behavior and the increase in the concentration of proteins similar to metallothionein at medium and high Zn levels (Watson et al, 2021).…”

Section: Discussionmentioning

confidence: 76%

“…Se ha observado a concentraciones que se encuentran habitualmente en los sedimentos costeros que en el poliqueto bentónico Alitta virens, la supervivencia se redujo a medida que aumentó la concentración de Zn, pero el crecimiento no fue significativamente diferente en exposición crónica en nueve meses de evaluación. De igual forma se vieron cambios significativos en el comportamiento alimentario y en el aumento en la concentración de proteínas similares a la metalotioneína a niveles medios y altos de Zn (Watson et al, 2021).…”

Section: Discussionunclassified

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Contaminación por elementos trazas en sedimentos superficiales marinos de la bahía del Callao, Perú

Rosas,

Alvariño,

Guabloche

et al. 2023

Bol. Investig. Mar. Costeras

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En este estudio se evaluó la contaminación por elementos trazas en el sedimento superficial de la bahía del Callao, Perú. Se analizaron 28 elementos trazas en sedimentos marinos superficiales, provenientes de cuatro estaciones por cada temporada (otoño, invierno, primavera y verano), durante el período 2015-2016, a través de espectrofotometría de absorción atómica con plasma acoplado inductivamente (ICP-MS). Se utilizaron índices para determinar el grado de contaminación del sedimento. El As, Cd, Cu, Hg, Pb y Zn podrían estar asociados a efectos tóxicos sobre la biota del sedimento marino superficial con base en una evaluación de riesgo ecológico. Los valores de EF (factor de enriquecimiento) indicaron un enriquecimiento extremadamente alto por las medias anuales de As, Cd, Ag y Pb, mientras que los de CF (factores de contaminación) indicaron alta contaminación. Además, se determinó que el sedimento marino superficial de la bahía del Callao se encuentra altamente contaminado, debido principalmente a As, Cd y Pb: mCd (índice de riesgo ecológico potencial), PIAvg (promedio de índice de contaminación) y PInemerow (índice de contaminación de Nemerow).

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Section: Discussionmentioning

confidence: 76%

Section: Discussionunclassified

Contaminación por elementos trazas en sedimentos superficiales marinos de la bahía del Callao, Perú

Rosas,

Alvariño,

Guabloche

et al. 2023

Bol. Investig. Mar. Costeras

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Biomarker responses in Danio rerio following an acute exposure (96 h) to e-waste leachate

Rielly,

Dahms-Verster,

Greenfield

2024

Ecotoxicology

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Electronic waste (e-waste) has been identified as an emerging pollutant and is the fastest growing waste stream at the present time. Significant technological development and modernization within the last decade has led to the rapid accumulation of outdated, broken and unwanted electrical and electronic equipment (EEE). Electronic products mainly consist of a range of metal containing components that, when disposed of improperly, could result in metal constituents leached into the environment and posing a health risk to humans and animals alike. Metal exposure can induce oxidative stress in organisms, which could lead to synergistic, antagonistic and additive effects. The metals found highest in abundance in the simulated e-waste leachate, were nickel (Ni), barium (Ba), zinc (Zn), lithium (Li), iron (Fe), aluminium (Al) and copper (Cu). An acute exposure study was conducted over a 96 h period to determine the potential toxicity of e-waste on the test organism Danio rerio. Biomarker analysis results to assess the biochemical and physiological effects induced by e-waste leachate, showed a statistically significant effect induced on acetylcholinesterase activity, superoxide dismutase, catalase activity, reduced glutathione content, glutathione s-transferase, malondialdehyde and glucose energy available. The Integrated Biomarker Response (IBRv2) analysis revealed a greater biomarker response induced as the exposure concentration of e-waste leachate increased.

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Ecotoxicological assessment of copper and zinc in a common aquatic plant Ceratophyllum demersum: Physiological effects and biomarker responses

Luengluetham,

Chotikarn,

Nopparat

et al. 2023

Aquatic Botany

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Detecting the effects of chronic metal exposure on benthic systems: Importance of biomarker and endpoint selection

Cited by 7 publications

References 73 publications

Contaminación por elementos trazas en sedimentos superficiales marinos de la bahía del Callao, Perú

Contaminación por elementos trazas en sedimentos superficiales marinos de la bahía del Callao, Perú

Biomarker responses in Danio rerio following an acute exposure (96 h) to e-waste leachate

Ecotoxicological assessment of copper and zinc in a common aquatic plant Ceratophyllum demersum: Physiological effects and biomarker responses

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