Cadmium in aquatic food webs

Kay, Stratford H.

doi:10.1007/978-1-4612-5140-8_2

Cited by 38 publications

(24 citation statements)

References 73 publications

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“…This agree with Wolf (1975); Kay (1985); Augier et al (1992); Ramadan et al (1997) and Abdel Gawad (2001& 2005. More over it was found that concentrations of Cadmium were lower in shell than the corresponding values in soft tissue.…”

Section: Discussionsupporting

confidence: 85%

Toxicity and Bioaccumulation of Cadmium in the Freshwater Bivalve Corbicula Fluminalis Müller, 1774.

Gawad

2006

Egypt. J. of Aquatic Biolo. and Fish.

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Section: Discussionsupporting

confidence: 85%

Toxicity and Bioaccumulation of Cadmium in the Freshwater Bivalve Corbicula Fluminalis Müller, 1774.

Gawad

2006

Egypt. J. of Aquatic Biolo. and Fish.

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“…Exposures of this type assume by design that metal uptake from food is negligible (Luoma 1995). Rigorous demonstrations to support this assumption are few, owing in large part to the technical difficulties involved in unambiguously separating food and water as metal sources to animals (Kay 1985;Fisher and Reinfelder 1995). One exception is a recent laboratory experiment in which water and food (a planktonic crustacean) were successfully separated as cadmium (Cd) sources for the predatory insect Chaoborus punctipennis (Munger and Hare 1997).…”

mentioning

confidence: 99%

“…However, the conclusions of laboratory experiments cannot be readily extrapolated to reliably model the transfer of metals along food webs in ecosystems. The handling of animals can produce experimental artifacts, and conditions in the field (metal bioavailability, food webs) are more complex than those in the laboratory (Taylor 1983;Kay 1985;Bothwell et al 1994).…”

mentioning

confidence: 99%

Cadmium sources and exchange rates for Chaoborus larvae in nature

Munger

Hare

Tessier

1999

Limnology & Oceanography

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Although freshwater insects are known to accumulate trace metals in the laboratory from both water and food, the relative importance of metal sources for these animals, as well as the rate at which they take up and eliminate their metal, has not been measured in nature. We describe a novel in situ approach that allowed us to determine that trophic transfer is the main source of cadmium for larvae of a common lake-dwelling animal, the phantom midge Chaoborus punctipennis. We transferred C. punctipennis larvae from a low-cadmium to a high-cadmium lake, where they were exposed in 64-m-mesh mesocosms to the prevailing high-Cd concentrations in water and to various quantities of prey collected from the Cd-rich lake. Our experimental design ensured exposure of C. punctipennis larvae to realistic Cd concentrations in water and in a natural mixture of prey types. Our results indicate that larvae take up their Cd mainly from prey. Thus models of metal dynamics and effects on these invertebrates are likely to be more realistic if they include food as a metal source. Using the same mesh mesocosm design, we also determined that C. punctipennis larvae transferred from a high-Cd to a low-Cd lake lost their Cd slowly. Combining our information on Cd uptake and loss from C. punctipennis allowed us to model Cd exchange between this insect and its surroundings.

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“…Use of E. crassipes in remediation of polluted water bodies is gaining popularity due to its cost effectiveness and high capability to accumulate toxic heavy elements (Chua, 1998). Among the heavy metals, cadmium (Cd) is known to be highly toxic to both animals and plants (Kay, 1985;Deckert, 2005). A good Cd accumulator can concentrate >100 µg g -1 dry weight of metal (Baker and Brooks, 1989), has high biomass, rapid growth, and has bioconcentration factor (BCF) and translocation factor (TF) values >1 (Garbisu and Alkorta, 2001).…”

Section: Introductionmentioning

confidence: 99%

Physiological responses of water hyacinth, Eichhornia crassipes (Mart.) Solms,to cadmium and its phytoremediation potential

Das¹,

Goswami²,

Talukdar³

2016

Turk J Biol

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Eichhornia crassipes is an abundant floating aquatic weed that has great potential for cadmium (Cd) remediation owing to its large biomass and relatively high tolerance and accumulation capabilities. This study was conducted with Eichhornia in 5, 10, 15, and 20 mg L -1 CdCl 2 in a hydroponic system for 21 days, and the Cd concentrations in the roots, shoots, and leaves were estimated. The plant showed tolerance, but at high Cd concentrations declines in biomass, root length, and leaf area were observed. Leaves showed a progressive decline in chlorophyll, carotenoid, and soluble protein and a significant elevation in lipid peroxidation. Cd uptake gradually increased in all the plant tissues up to 15 mg L -1 exposure, but at 20 mg L -1 the accumulation declined. Shoot tissues accumulated more Cd than root and leaf tissues. The highest accumulation by the plant was 1927.83 µg g -1 dry wt at 15 mg L -1 Cd. The maximum leaf, shoot, and root bioconcentration factors were 179.05, 187.59, and 169.3, respectively, and the maximum translocation factor of 1.003 was observed at 5 mg L -1 Cd. The root-to-leaf translocation of Cd was 100% efficient for all the doses of Cd exposure, except for 20 mg L -1 . The results of this study suggested that water hyacinth tolerated phytotoxic concentrations of up to 15 mg L -1 and efficiently hyperaccumulated Cd in its above-ground tissues.

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Cadmium in aquatic food webs

Cited by 38 publications

References 73 publications

Toxicity and Bioaccumulation of Cadmium in the Freshwater Bivalve Corbicula Fluminalis Müller, 1774.

Toxicity and Bioaccumulation of Cadmium in the Freshwater Bivalve Corbicula Fluminalis Müller, 1774.

Cadmium sources and exchange rates for Chaoborus larvae in nature

Physiological responses of water hyacinth, Eichhornia crassipes (Mart.) Solms,to cadmium and its phytoremediation potential

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