Sites of water, zinc and calcium uptake and distribution of these metals after cadmium administration in Arion ater (Gastropoda: Pulmonata)

Ireland, M.P.

doi:10.1016/0300-9629(82)90058-5

Cited by 23 publications

(9 citation statements)

References 21 publications

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“…This depends, among other factors, on the major uptake routes by which metals enter the animal's body. Although a few studies show that some species of terrestrial pulmonates can absorb certain nutrients and trace elements directly from the soil substrate across the skin (Simkiss and Wilbur, 1977;Ryder and Bowen, 1977;Ireland, 1982), the main uptake route for metals in pulmonates may be, as for most other terrestrial invertebrates (see Hopkin, 1989), the gut epithelium, while absorption via the skin may be of only secondary importance. This is also indicated by feeding experiments with terrestrial pulmonate species under laboratory conditions, where the metal content of feed appears to determine the nutrition physiology of exposed individuals and their body metal burden (Dallinger and Wieser, 1984;Berger and Dallinger, 1989).…”

Section: Importance Of Basic Knowledge and Laboratory Studies For Estmentioning

confidence: 98%

Cd Accumulation and Cd?Metallothionein as a Biomarker in Cepaea hortensis (Helicidae, Pulmonata) from Laboratory Exposure and Metal-polluted Habitats

et al. 2004

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Cepaea hortensis is a widespread terrestrial pulmonate, contributing significantly to element fluxes in soil ecosystems. Due to its capacity of accumulating certain trace elements in its tissues, Cepaea hortensis can serve as a biological indicator of metal accumulation in contaminated areas. In response to Cd exposure this species and related helicid pulmonates are also able to synthesize an inducible, Cd-binding metallothionein (MT) isoform specifically serving in binding and detoxification of this metal. As shown by field-collected garden-snails from a metal-contaminated site near a zinc smelting works in Avonmouth (UK) and an unpolluted reference site in Reutte (Tyrol, Austria), Cd and Cd MT concentrations in midgut gland of C. hortensis from these sites increased with rising Cd concentrations in the soil substrate from the same contaminated sites. By combining the results of these field data with laboratory experiments it appears that midgut gland Cd-MT of Cepaea hortensis seems to fulfil the criteria of a successful biomarker in many respects. First, the synthesis of the protein can rapidly be induced by Cd exposure. Second, the level of Cd MT induction in C. hortensis directly reflects the intensity of metal exposure. Third, the induced signal of increased Cd-MT concentration in C. hortensis is persistent over extended periods of time. Fourth, the Cd-MT signal in C. hortensis seems to be very specific for Cd exposure. Regression analyses demonstrate that tissue levels of Cd and Cd MT in C. hortensis depend on Cd concentrations in the substrate which is represented by either soil or plant material on which snails normally feed. In both cases the best fit for this dependence is exhibited by a semi-logarithmic relationship, with substrate (soil or plant feed) concentrations expressed on a logarithmic scale. It is concluded that C. hortensis and other related pulmonates can successfully be used either as biological indicators of Cd accumulation, or as key species in biomonitoring studies focusing on Cd-MT induction as a biomarker for Cd exposure.

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Section: Importance Of Basic Knowledge and Laboratory Studies For Estmentioning

confidence: 98%

Cd Accumulation and Cd?Metallothionein as a Biomarker in Cepaea hortensis (Helicidae, Pulmonata) from Laboratory Exposure and Metal-polluted Habitats

et al. 2004

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“…This uptake process is not under the control of the animal but depends on the metal concentration in the food (Dallinger, 1995a). Moreover, both water and metals can be taken up across the skin and especially across the foot, since it contains blood-filled connective tissue spaces that result in a very efficient blood circulation comparable to a closed circulatory system (Ireland, 1982).…”

Section: Cellular Uptake Of Metalsmentioning

confidence: 99%

Cellular and subcellular distribution of metals in molluscs

Marigómez

Soto

Cajaraville

et al. 2002

Microscopy Res & Technique

420

202

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The cellular processes involved in metal metabolism in molluscs are reviewed, with emphasis on the contribution of microscopy (AMG, ARG, EPMA, and SIMS) to both basic research of metal cell biology and applied environmental research. In molluscs, metal uptake may occur by facilitated diffusion, active transport, or endocytosis, and can be enhanced by MT synthesis or formation of mineralized granules. In aquatic molluscs, gills constitute a key interface for dissolved metal uptake, where metals are bound to MT, incorporated into lysosomes, and released basally towards the blood plasma and circulating hemocytes. However, particulate metal uptake is mainly achieved via the digestive tract by endocytosis; further metals are transferred first to lysosomes and then to residual bodies, especially in the digestive cells of the digestive gland. Additionally, metals can be accumulated selectively in specific cell types. As ligands pools differ from cell to cell, different metals may be retained in different cell types. Class "a" metals are localized in cells with granules composed of carbonate, oxalate, phosphate, and sulfate (oxygen donors), whereas "b" metals are associated with those cell types rich in sulfur and nitrogen ligands (sulfur donors). In molluscs, oxygen donors occur in connective tissue calcium cells and basophilic cells, whereas sulfur donors are present in digestive cells, podocytes, nephrocytes, and rhogocytes. Hemocytes, which constitute the most relevant system for metal transport between tissues, move around the body and may penetrate tissues and remove metals from the inner medium to be accumulated in lysosomes as nondigested products. Rhogocytes also participate in metal mobilization, accumulation, and release. The assessment of metal levels in target cells of sentinel molluscs by microscopic techniques provides an early-warning measure, with promising applications as an exposure biomarker for environmental monitoring programs.

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“…Aluminium concentrations in millipedes were higher in exposure groups one and two after six weeks of exposure, which is to be expected with the addition of metals to the diet of the millipedes. [47]. The millipedes in exposure group one (471.69 mg/kg) showed the highest aluminium concentrations after six weeks, even though exposure group two had the higher application of the metal.…”

Section: Aluminium Concentrations In Millipedes Displayedmentioning

confidence: 85%

“…The millipedes in exposure group one (471.69 mg/kg) showed the highest aluminium concentrations after six weeks, even though exposure group two had the higher application of the metal. The difference between the two exposure groups may be explained by a reduction in food uptake in the millipedes of exposure group two [47] to avoid further uptake of the toxins and is a normal response to metal contaminated food [5] (Table 1 and Fig. 1).…”

Section: Aluminium Concentrations In Millipedes Displayedmentioning

confidence: 99%

Metal Bioaccumulation and Oxidative Stress in Millipedes Experimentally Exposed to a Cocktail of Aluminium, Iron and Manganese

Naude¹,

Snyman²,

Marnewick³

et al. 2022

Pol. J. Environ. Stud.

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Metals found in remnant patches, such as forest pockets adjacent to cities arise mostly from emission sources born from urban land usage, inevitably contaminating these forest soils [1].Soil invertebrates are well known indicators of pollutant levels [2], but the results are often influenced by factors [3] such as their response to metal exposure, as a result of their physiology, mobility, feeding habits and microhabitat preferences [4]. Some diplopod species developed strategies to potentially minimize

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Sites of water, zinc and calcium uptake and distribution of these metals after cadmium administration in Arion ater (Gastropoda: Pulmonata)

Cited by 23 publications

References 21 publications

Cd Accumulation and Cd?Metallothionein as a Biomarker in Cepaea hortensis (Helicidae, Pulmonata) from Laboratory Exposure and Metal-polluted Habitats

Cd Accumulation and Cd?Metallothionein as a Biomarker in Cepaea hortensis (Helicidae, Pulmonata) from Laboratory Exposure and Metal-polluted Habitats

Cellular and subcellular distribution of metals in molluscs

Metal Bioaccumulation and Oxidative Stress in Millipedes Experimentally Exposed to a Cocktail of Aluminium, Iron and Manganese

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