Investigations into the bioavailability and bioaccumulation of mercury and other trace metals to the sea cucumber, Sclerodactyla briareus, using in vitro solubilization

The in vitro solubilization and bioaccumulation of mercury and other trace metals by the intestinal fluid of the sea cucumber, Sclerodactyla briareus, was investigated. Sediments were incubated with intestinal fluid and the intestinal fluid was analyzed for the in vitro experiments. Experiments exam...

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Bibliographic Details
Published in:Marine pollution bulletin 2003-12, Vol.46 (12), p.1600-1608
Main Authors: McAloon, Kelly Margaret, Mason, Robert Peter
Format: Article
Language:English
Subjects:
Animal, plant and microbial ecology
Animals
Applied ecology
Bioaccumulation
Bioavailability
Biological and medical sciences
Cadmium - pharmacokinetics
Copper - pharmacokinetics
Ecotoxicology, biological effects of pollution
Effects of pollution and side effects of pesticides on protozoa and invertebrates
Fundamental and applied biological sciences. Psychology
Gastrointestinal Contents - chemistry
Geologic Sediments - analysis
Holothurioidea
In Vitro Techniques
Lead - pharmacokinetics
Marine
Mercury
Mercury - pharmacokinetics
Sclerodactyla briareus
Sea Cucumbers - chemistry
Solubility
Solubilization
Trace metals
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Summary:The in vitro solubilization and bioaccumulation of mercury and other trace metals by the intestinal fluid of the sea cucumber, Sclerodactyla briareus, was investigated. Sediments were incubated with intestinal fluid and the intestinal fluid was analyzed for the in vitro experiments. Experiments examined both procedural effects of in vitro solubilization and bioaccumulation of trace metals by the sea cucumber. Both solubilization and bioaccumulation were compared among the different metals. This comparison revealed that monomethylmercury (MMHg) solubilization and bioaccumulation is greater than Hg I; Cd solubilization is higher than MMHg and Hg I; and Cu and Pb solubilization is similar to MMHg and slightly higher than Hg I. Solubilization and bioaccumulation was found to be very low, except for Cd, which had high relative solubilization but low bioaccumulation. It was concluded that while solubilization could be the rate-limiting step for certain metals, other factors, such as depuration and membrane transport, may influence overall bioaccumulation of the other metals.
ISSN:0025-326X
1879-3363
DOI:10.1016/S0025-326X(03)00326-6