Osmoregulation of the grass shrimp Palaemonetes pugio Exposed to polychlorinated biphenyls (PCBs).

Roesijadi, G.; Anderson, Jack W.; Giam, C. S.

doi:10.1007/bf00391375

Cited by 26 publications

(2 citation statements)

References 23 publications

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“…MT as a low molecular weight, heat stable and cysteine-rich metal binding protein can be induced by many metals (e.g., Cd, Zn, Cu and Hg) in various marine invertebrates and fish (11). MTs have a close relationship with metal tissue concentration and play an important role in metal detoxification, storage, and homeostasis in these aquatic animals (12,13). For example, there is a significant relationship between metallothionein-like protein (MTLP) and accumulated Cd concentration in the clam Macoma balthica following Cd exposure (14).…”

Section: Introductionmentioning

confidence: 99%

Understanding the Differences in Cd and Zn Bioaccumulation and Subcellular Storage among Different Populations of Marine Clams

Shi

Wang

2003

Environ. Sci. Technol.

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The marine clams Mactra veneriformis were collected from three different locations in a contaminated bay in Northern China. Another species of clams Ruditapes philippinarum was collected from the same contaminated bay as well as from a relatively clean site in Hong Kong. The indices of Cd and Zn bioaccumulation (assimilation efficiency, dissolved uptake rate, and efflux rate), tissue concentration, subcellular distribution, metallothionein (MT) content, and clearance rate of the clams were subsequently quantified in these populations in the laboratory. In the two species of clams, the population with a higher Cd tissue concentration assimilated Cd and Zn more efficiently, in correlation with an increase in the Cd associated with the metallothionein-like protein (MTLP) fraction. The subcellular partitioning of Zn was similar among the different populations. The dissolved uptake rates of Cd and Zn were not influenced by the different tissue concentrations of metals in the clams. However, the clam R. philippinarum from the contaminated site reduced their Zn uptake rate constants in response to increasing Zn concentration in the water. Differences in Cd and Zn tissue concentrations had little influence on the metal efflux rate constant and the clams' clearance rate. Our results indicate that the higher Cd and Zn tissue concentrations observed in these two species may be partially caused by the high levels of metal assimilation. Populations living in contaminated environments may be able to modify their physiological and biochemical responses to metal stress, which can subsequently alter trace metal bioaccumulation to aquatic animals. The relative significance of dietary uptake and the potential trophic transfer of metals in the contaminated areas may be substantially different from those in the clean environments.

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Section: Introductionmentioning

confidence: 99%

Understanding the Differences in Cd and Zn Bioaccumulation and Subcellular Storage among Different Populations of Marine Clams

Shi

Wang

2003

Environ. Sci. Technol.

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“…Since PCBs are hydrophobic, acetone was used as a carrier solvent to facilitate their addition to seawater (Roesijadi et al, 1976;McLeese et al, 1980). Mesocosms were established by transferring 1 L of solution, according to the different treatments to each glass container, always maintained under oxic conditions.…”

Section: Experimental Set-upmentioning

confidence: 99%

Uptake and depuration of PCB-153 in edible shrimp Palaemonetes varians and human health risk assessment

Grilo

Cardoso

Pato

et al. 2014

Ecotoxicology and Environmental Safety

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a b s t r a c tA medium-term mesocosm exposure study was conducted to elucidate bioaccumulation and depuration of polychlorinated biphenyl congener 153 (PCB-153) in edible shrimp Palaemonetes varians. Over the 15-day exposure period, shrimp under different exposure concentrations exhibited a significant increase in PCB-153 concentration compared with control organisms. Distinct bioaccumulation patterns and uptake rates were observed depending on the exposure concentrations. For low PCB-153 exposure levels ), accumulation was faster and linear. In addition, the bioaccumulation rate was not proportional to PCB-153 concentration, and the bioaccumulation was higher at intermediate exposure concentrations. Regarding the depuration phase, P. varians lost up to 30% of PCB-153 after 72 h and levels continued slowly to decrease until the end of the 30-d experimental period. However, PCB-153 levels in shrimp did not reach background values, and those exposed to moderate and high PCB-153 concentrations presented contamination levels much higher than the regulatory limit for human food consumption (75 ng g À 1 ww for Σ 6 PCB).

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Alterations in the oxygen consumption, condition index and concentration of free amino acids in Corbicula fluminea, (mollusca: Pelecypoda) exposed to sodium dodecyl sulfate

Graney¹,

Giesy

1988

Enviro Toxic and Chemistry

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The freshwater clam, Corbicula fluminea, was exposed during short‐ and long‐term toxicity tests to the anionic surfactant sodium dodecyl sulfate (SDS). Oxygen consumption, condition index, water content and the concentration of free amino acids (FAA) were measured in the clams after exposure. A significant increase in the total FAA concentration was measured in clams exposed for 96 h to 25 mg/L SDS. Exposure to sublethal concentrations (0.65 and 3.0 mg/L SDS) for 60 d caused both an increase in total FAA concentration and a change in the relative concentrations of individual amino acids. Sublethal chronic exposure also decreased oxygen consumption and condition index and increased water content. Alterations in FAA are a more sensitive indicator of toxicant exposure than more traditional measures such as respiration. The potential use of FAA as an in situ biochemical indicator of toxicant‐induced stress in freshwater invertebrates is discussed.

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Osmoregulation of the grass shrimp Palaemonetes pugio Exposed to polychlorinated biphenyls (PCBs).

Cited by 26 publications

References 23 publications

Understanding the Differences in Cd and Zn Bioaccumulation and Subcellular Storage among Different Populations of Marine Clams

Understanding the Differences in Cd and Zn Bioaccumulation and Subcellular Storage among Different Populations of Marine Clams

Uptake and depuration of PCB-153 in edible shrimp Palaemonetes varians and human health risk assessment

Alterations in the oxygen consumption, condition index and concentration of free amino acids in Corbicula fluminea, (mollusca: Pelecypoda) exposed to sodium dodecyl sulfate

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