Comparative study of toxicity, uptake and distribution of cadmium and mercury in the sea water adapted eelAnguilla anguilla

Noël-Lambot, F.; Bouquegneau, Jean-Marie

doi:10.1007/bf01683710

Cited by 26 publications

(11 citation statements)

References 14 publications

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“…It is surprising to observe in limpet muscular tissue relatively high levels of Cd bound to metallothioneins. This is quite different from observations made in vertebrates where muscular tissue never reaches concentrations higher than 1 or 2 ppm wet weight, even in the case of drastic Cd intoxication (Noel-Lambot and Bouquegneau, 1977). Moreover, muscle is to our knowledge the only tissue in which the existence of metallothioneins has never been reported.…”

Section: Discussioncontrasting

confidence: 81%

Cadmium, Zinc and Copper Accumulation in Limpets (Patella vulgata) from the Bristol Channel with Special Reference to Metallothioneins

Noël-Lambot¹,

Bouquegneau²,

Frankenne³

et al. 1980

Mar. Ecol. Prog. Ser.

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The study of metal concentrations in Patella vulgata caught from a polluted environment reveals a direct relationship between Cd concentration and body size and an inverse relationship in regard to Zn and Cu. Most of the Cd present in limpets with heavy Cd loads is bound to thioneins, but this is not the case for Zn and Cu. In young limpets, Cd-thioneins were not detected. All results indicate that during long-term Cd intoxication under field conditions, Cd deposition and increase in metallothioneins in limpets were directly linked. The induced production of metallothioneins may thus be considered as the main mechanism responsible for the cumulative absorption of Cd in limpets living in the Bristol Channel. Isolation and characterization of limpet metallothioneins were performed. They indicate that mollusc metallothioneins are very similar to those from vertebrates.

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Section: Discussioncontrasting

confidence: 81%

Cadmium, Zinc and Copper Accumulation in Limpets (Patella vulgata) from the Bristol Channel with Special Reference to Metallothioneins

Noël-Lambot¹,

Bouquegneau²,

Frankenne³

et al. 1980

Mar. Ecol. Prog. Ser.

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“…In context with experimental studies of Cd accumulation in the eel Anguilla anguilla (Noel-Lambot and Bouquegneau, 1977;Noel-Lambot et al, 1978) we observed in the intestinal lumen of unfed fish, white mucous corpuscles with a very high Cd content. This material, regularly evacuated through the anus, was termed 'intestinal corpuscles'.…”

Section: Introductionmentioning

confidence: 73%

“…This is why, in spite of their low weight (ca 0.1 g), the intestinal corpuscles account for a large fraction of the total Cd content in the fish. The study of Cd distribution in the different organs of eels during experimental intoxication shows that after 8 d in sea water containing 13 pprn Cd, the intestinal corpuscles contain almost as much Cd as do the remaining body parts (Table 4; see also Noel-Lambot and Bouquegneau, 1977).…”

Section: Heavy Metals Accumulation In Intestinal Corpusclesmentioning

confidence: 98%

Presence In the Intestinal Lumen of Marine Fish of Corpuscles with a High Cadmium-, Zinc- and Copper-Binding Capacity: A Possible Mechanism of Heavy Metal Tolerance

Noël-Lambot¹

1981

Mar. Ecol. Prog. Ser.

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In various species of unfed fish (Anguilla anguilla, Myoxocephalus scorpjus, Serranus cabrilla, Moena chryselis, Scorpaena sp.), white mucous corpuscles were observed in the intestinal lumen. This material is regularly evacuated. The corpuscles contain hlgh concentrations of Ca and Mg; these elements are probably present in the form of carbonates precipitated from sea water contained in the intestine. In fish intoxicated with CdC12, ZnC1, or CuC12 added to sea water, the corpuscles contain enormous concentrations of these metals; although the weight of the corpuscles is small (about 0.1 % of the total wet weight of Anguilla anguilla), they may contain most of the Cd body burden. Corpuscles from non-intoxicated fish bind heavy metals in vitro: exposed to Cd. Zn or Cu enriched solutions, they retain these metals to the same extent as in vivo. It thus appears that metals are accumulated in the corpuscles directly from ingested sea water with a reduction in respective metal concentrations of the intestinal liquid. Intestinal corpuscles seem therefore to limit the entry of metals through the intestinal wall and to protect the fish against potentially hazardous concentrations of heavy metals

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“…The gills of the mollusc, Patella vulgata, for instance react to oil dispersants at concentrations of 0.1 mg/1 (Nuwayhid et al, 1980). Since it is ~ generally assumed that the gills are an important site for the uptake of water-dissolved heavy metals by fish (No~l-Lambot &Bouquegneau, 1977) andmussel {George et al, 1978), the effects of dispersants on gills might also influence cadmium uptake and tissue concentration.…”

Section: Accumulation Of Cadmium By Floundermentioning

confidence: 99%

“…Whereas fish muscle generally contains only small amounts of cadmium (Topping, 1973;Pentreath, 1977;No61-Lambot & Bouquegneau, 1977) the simultaneous action of a surfactant, known to be toxic and used for dispersing oil or cleansing after oil spills (Nelson-Smith, 1968), and a heavy metal might influence accumulation of the metal to such an extent that the edible parts of commercially important fish might become unfit for human consumption.…”

Section: Introductionmentioning

confidence: 99%

Effect of the surfactant Corexit 7664 on uptake of cadmium by organisms and biological matter in a closed circulated brackish-water system

Westernhagen

Dethlefsen²

1982

Helgolander Meeresunters

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Juvenile flounder and common mussel from the Baltic Sea were kept in Corexit 7664 (50 ~g/1) and cadmium (5 ~g/1)-contaminated, recirculated, sea-water systems for 200 days at 15 °C and 20 o/~ S. Accumulation of cadmium with exposure time was measured in several fish tissues and in mussel. There were no differences in the cadmium accumulation by tissues with or without the addition of Corexit 7664. No acute effects of the contaminants on the experimental animals could be noted. Final cadmium concentrations, reached for all biological matter analysed, were 4 times higher than in full-strength sea water.

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Comparative study of toxicity, uptake and distribution of cadmium and mercury in the sea water adapted eelAnguilla anguilla

Cited by 26 publications

References 14 publications

Cadmium, Zinc and Copper Accumulation in Limpets (Patella vulgata) from the Bristol Channel with Special Reference to Metallothioneins

Cadmium, Zinc and Copper Accumulation in Limpets (Patella vulgata) from the Bristol Channel with Special Reference to Metallothioneins

Presence In the Intestinal Lumen of Marine Fish of Corpuscles with a High Cadmium-, Zinc- and Copper-Binding Capacity: A Possible Mechanism of Heavy Metal Tolerance

Effect of the surfactant Corexit 7664 on uptake of cadmium by organisms and biological matter in a closed circulated brackish-water system

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