Combined toxicity of mercury and cadmium to the tropical green mussel Perna viridis

Mohan, C.V.; Gupta, T.R.C.; Shetty, Hpc; Menon, N Dr.Ravindranatha

doi:10.3354/dao002065

Cited by 25 publications

(7 citation statements)

References 21 publications

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“…The synergism of the mixture Cd and Hg was observed in the mussel Perna viridis by Mohan et al (1986). Both metals have a high affinity for protein binding sites, which might explain their increased toxicity when they occur at relatively high concentrations in the environment (Barata et al, 2006).…”

Section: Discussionmentioning

confidence: 97%

Toxicity of metal mixtures to the Pacific white shrimp Litopenaeus vannamei postlarvae

Frías-Espericueta

Voltolina²,

Osuna-López

et al. 2009

Marine Environmental Research

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According to the literature, the safe level of a toxic substance for any given organism may be calculated from its median lethal concentration multiplied by a suitable application factor (AF: usually 0.1 and 0.01). The medial lethal concentrations for Litopenaeus vannamei postlarvae exposed to the mixtures in equitoxic proportions of Cd-Hg, Hg-Zn and Hg-Pb were close to one order of magnitude lower than the values calculated from individual toxicity tests, indicating a synergistic effect, while the mixture Cd-Zn showed an antagonistic effect. Exposure to the mixture of Cu, Fe, Mn, Zn, Cd, Hg and Pb caused 63.3% and 100% mortality after 21 and 13 days for 0.05 and 0.1 AF, showing that environmental safe concentrations of toxicants should not be calculated from individual toxicity tests.

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Section: Discussionmentioning

confidence: 97%

Toxicity of metal mixtures to the Pacific white shrimp Litopenaeus vannamei postlarvae

Frías-Espericueta

Voltolina²,

Osuna-López

et al. 2009

Marine Environmental Research

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“…For example, mixtures of Zn and Cd caused a significantly greater reduction of the filtration rate of the bivalve Anadena granosa compared to that of the single metal exposures (Patel & Anthony, 1991) . The filtration rate of marine bivalves was reduced by 50% in mixtures of Cd and Hg compared to that in the single metal exposures (Mohan et al, 1986) . Mixtures of Cu and Zn caused antagonistic effects on the filtration rates of the freshwater bivalve Dreissena polymorpha, whilst Cu and Cd acted synergistically after an exposure of D. polymorpha for 48 h (Kraak et al, 1994) .…”

Section: Food Consumptionmentioning

confidence: 91%

Joint and single toxicity of Cd and Fe related to metal uptake in the mayfly Leptophlebia marginata (L.) (Insecta)

Gerhardt

1995

Hydrobiologia

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The toxic effects of Cd and Fe on the mayfly Leptophlebia marginata were tested during single and joint exposure to the metals . Data on uptake and localization of the metals were related to the following biological parameters : survival, food consumption (% gut contents) and activity (escape from prodding) .The uptake of Cd by L. marginata was significantly reduced by the presence of Fe (p<0 .0005) .Fe e+-and Fe 3 +-crusts on the gills, body surface and on the gut membrane precipitated when the mayflies were exposed to either Fe alone or to Fe and Cd . This caused decreased food consumption by the mayflies .In the pigments of the eyes and the cuticle Fe 2+ was found . Exposure to Cd led to disturbances in Cl -and K+ ion balance, which were ameliorated by additional Fe-exposure due to co-precipitation processes .Exposure to Cd caused an increase in the concentrations of S and P in the mayflies . Whereas Fe caused sublethal effects (food consumption) without being taken up into the organism . Cd caused lethal effects (inactivity, death) due to disturbances of the ion balance at the membranes . 229

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“…No general trend for the effects of mixtures can be found in the literature. Mohan et al [6] have studied the effects of sublethal concentrations of Hg + Cd on byssus thread production, oxygen consumption, and filtration rate of the marine mussel Perna viridis. They demonstrated that in mixtures these metals could have more than *To whom correspondence may be addressed.…”

Section: Introductionmentioning

confidence: 99%

“…When mixtures of organic substances with the same mode of action are tested, concentration addition can be expected 1121. For the effects of metals on filtration rate, however, no concentration addition can be expected [6] because metals exert their effect on filtration rate in a different way [13]. Amiard et al [14] demonstrated that bivalves are able to regulate the body concentration of the essential metal Zn.…”

Section: Introductionmentioning

confidence: 99%

Ecotoxicity of Mixtures of Metals to the Zebra Mussel Dreissena Polymorpha

Kraak¹,

Lavy²,

Schoon³

et al. 1994

Environ Toxicol Chem

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The effects of equitoxic mixtures of CuCI,, ZnCI,, and CdCI, on the filtration rate of the freshwater mussel Dreissena polymorpha were determined. The amounts of added metals were expressed in toxic units, and a range of toxic units was tested. C u + Zn was less than concentration additive, Zn + Cd was concentration additive, and Cu + Cd was more than concentration additive in their effects on the filtratioil rate of Dreissenapolymorpha. An equitoxic mixture of all three metals was concentration additive. The effect of a mixture could not be predicted from the effects of the single metals. The concentrations at which Cu and Cd contributed to the toxicity of a mixture of Cu + Zn + Cd were at or below the NOECs for these metals, determined in single-metal toxicity tests. At low but elevated Cu and Zn concentrations in water, no accumulation of these metals in the mussels took place; Cd, on the contrary, was accumulated at all Cd concentrations in the water.

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Combined toxicity of mercury and cadmium to the tropical green mussel Perna viridis

Cited by 25 publications

References 21 publications

Toxicity of metal mixtures to the Pacific white shrimp Litopenaeus vannamei postlarvae

Toxicity of metal mixtures to the Pacific white shrimp Litopenaeus vannamei postlarvae

Joint and single toxicity of Cd and Fe related to metal uptake in the mayfly Leptophlebia marginata (L.) (Insecta)

Ecotoxicity of Mixtures of Metals to the Zebra Mussel Dreissena Polymorpha

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