Relationship Between Dietary Cadmium Absorption by Grass Shrimp (Palaemonetes pugio) and Trophically Available Cadmium in Amphipod (Gammarus lawrencianus) Prey

Seebaugh, David R.; Estephan, A.; Wallace, William G.

doi:10.1007/s00128-005-0884-8

Cited by 15 publications

(6 citation statements)

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“…One explanation for diet being such an important contributor to Cd accumulation in these taxa is that as similation efficiencies were quite high. This is consistent with other studies reporting AE in predatory invertebrates ( , ). We speculate that the high AEs observed in predatory insects in general may be associated with feeding strategy.…”

Section: Discussionsupporting

confidence: 94%

Cadmium Ecophysiology in Seven Stonefly (Plecoptera) Species: Delineating Sources and Estimating Susceptibility

Martin

Luoma

Cain

et al. 2007

Environ. Sci. Technol.

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A major challenge in ecotoxicology lies in generating data under experimental conditions that are relevant to understanding contaminant effects in nature. Biodynamic modeling combines species-specific physiological traits to make predictions of metal bioaccumulation that fare well when tested in the field. We generated biodynamic models for seven predatory stonefly (Plecoptera) species representing the families Perlidae (5) and Perlodidae (2). Each taxon was exposed to cadmium independently via diet and via solution. Species varied approximately 2.6 fold in predicted steady-state cadmium concentrations. Diet was the predominant source of accumulated cadmium in five of the seven species and averaged 53.2 +/- 9.6% and 90.2 +/- 3.7% of net Cd accumulation in perlids and perlodids, respectively. Differences in Cd bioaccumulation between the two families were largely driven by differences in dissolved accumulation rates, which were considerably slower in perlodidsthan in perlids. We further examined the subcellular compartmentalization of Cd accumulated from independent aqueous and dietary exposures. Predicted steady-state concentrations were modified to only consider Cd accumulated in metal-sensitive subcellular compartments. These values ranged 5.3 fold. We discuss this variability within a phylogenetic context and its implications for bioassessment.

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Section: Discussionsupporting

confidence: 94%

Cadmium Ecophysiology in Seven Stonefly (Plecoptera) Species: Delineating Sources and Estimating Susceptibility

Martin

Luoma

Cain

et al. 2007

Environ. Sci. Technol.

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“…As a nonessential metal, cadmium would have no required minimum concentration and would have to be detoxified without delay, although detoxification often involves binding to physiologically important proteins such as enzymes, metallothioneins (metal-binding proteins, MTs, acting as a detoxification mechanism for sequestration of intracellular Cd), MT-like proteins (MTLPs), yolk protein (lipovitellin), and specific target tissues or cells. Moreover, detoxification also often involves the partitioning of cadmium to a subcellular compartment containing trophically available metals (TAM) such as metal bound to heat-stable proteins (HSP, e.g., metallothioneins), heat-denatured proteins (HDP, e.g., enzymes), organelles, insoluble components (e.g., exoskeleton and metal-rich granules), and cellular debris, which represent maximum bioavailable cadmium in aquatic invertebrates quantified [27]. Cadmium cellular toxicity occurs when the cadmium concentration that is linked to the protein fraction exceeds a threshold value [28].…”

Section: Discussionmentioning

confidence: 99%

Effects of dietary cadmium exposure on reproduction of saltwater cladoceran Moina monogolica Daday: Implications in water quality criteria

Wang

Yan

Hyne³

2009

Enviro Toxic and Chemistry

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The chronic toxicity of dietary cadmium to the saltwater cladoceran Moina monogolica Daday and its relative toxicity compared with aquatic exposure were investigated in the present study. The microalgae Chlorella pyrenoidosa, exposed to cadmium in growth inhibition tests, had a 96-h median effective concentration (EC50) of 81.2 microg Cd/L (95% confidence intervals [CIs] = 71.9-95.1). C. pyrenoidosa exposed for 96 h to sublethal dissolved cadmium concentrations in the range 4.10 +/- 0.30 to 70.29 +/- 0.31 microg/L resulted in algal cadmium burdens up to 73.86 x 10(-16) g Cd/cell. Cellular cadmium burdens accumulated in a dose-dependent manner, whereas cell densities inversely declined from 670 x 10(4) to 38 x 10(4) cells/ml with exposure to the increasing aqueous cadmium concentrations. C. pyrenoidosa preexposed to cadmium and used as food in a chronic 21-d toxicity test with the cladoceran M. monogolica, containing no added dissolved cadmium, inhibited reproduction. Significant reductions of the net reproduction rate (R(0)) per brood were observed in all broods, and the decline in the number of neonates produced increased with each subsequent brood. The cadmium concentration (4.10 +/- 0.30 microg/L) in the algal culture water that produced the lowest algal cadmium burden (2.85 +/- 0.76 x 10(-16) g Cd/cell) was shown to inhibit M. monogolica reproduction and was compared with the water quality criteria (WQC) of China. This comparison indicated that dietary exposure to cadmium may cause sublethal responses at concentrations below the current cadmium WQC of China for aquaculture.

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“…To determine if Ni and Tl are readily transferred along food chains, we measured the efficiency with which S. velata accumulates these metals from the two prey types. To explain its propensity for assimilating these metals, we also measured Ni and Tl distributions in prey cells because the manner in which metals are detoxified and stored in cells is reported to influence their transfer to higher trophic levels – .…”

Section: Introductionmentioning

confidence: 99%

The Internal Distribution of Nickel and Thallium in Two Freshwater Invertebrates and its Relevance to Trophic Transfer

Dumas

Hare

2008

Environ. Sci. Technol.

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Although nickel and thallium are present at potentially harmful concentrations in some lakes, there is little information on their bioaccumulation and transfer up aquatic food webs. To measure the propensity of animals for accumulating and transferring these contaminants along food chains, we exposed two common types of invertebrates, an insect (Chironomus riparius) and a worm (Tubifex tubifex), to these metals spiked into sediment. We then measured the subcellular distribution of Ni and Tl in these invertebrates to estimate the likelihood that these metals will have toxic effects on these prey or be transferred to higher trophic levels. In both species, at least half of their Ni and TI was present in fractions that are purportedly detoxified (granules and metal-binding proteins). Furthermore, based on information in the literature concerning prey subcellular fractions that are likely to be trophically available (TAM), we estimate that much of the Ni and TI in these animals (43-84%) is available for transfer to a predator. To test this prediction, we fed these invertebrates to the alderfly Sialis velata, and measured the efficiency with which this predator assimilated Ni and Tl from each prey type. The majority of both trace metals (58-83%) was assimilated by the predator, which suggests that these contaminants would be easily transferred along aquatic food chains and that models describing Ni and Tl accumulation by aquatic animals should consider food as a source of these metals. The proportion of metal that could potentially be taken up by a consumer (% TAM) and the actual percentage assimilated by S. velata fell on or reasonably close to a 1:1 line for the 4 prey-metal combinations.

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Relationship Between Dietary Cadmium Absorption by Grass Shrimp (Palaemonetes pugio) and Trophically Available Cadmium in Amphipod (Gammarus lawrencianus) Prey

Cited by 15 publications

References 0 publications

Cadmium Ecophysiology in Seven Stonefly (Plecoptera) Species: Delineating Sources and Estimating Susceptibility

Cadmium Ecophysiology in Seven Stonefly (Plecoptera) Species: Delineating Sources and Estimating Susceptibility

Effects of dietary cadmium exposure on reproduction of saltwater cladoceran Moina monogolica Daday: Implications in water quality criteria

The Internal Distribution of Nickel and Thallium in Two Freshwater Invertebrates and its Relevance to Trophic Transfer

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