Document Detail


Short-term silver accumulation in tissues of three marine invertebrates: shrimp Penaeus duorarum, sea hare Aplysia californica, and sea urchin Diadema antillarum.
MedLine Citation:
PMID:  17644199     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The present study was carried out to examine possible differential silver distribution among several tissues of three marine invertebrate species: the shrimp Penaeus duorarum, the sea hare Aplysia californica, and the sea urchin Diadema antillarum. Animals were exposed to sub-lethal concentrations of silver (1 or 10 microg/L) in seawater for 48 h. In gill-breathing species (shrimp and sea hare), higher silver accumulation in gills were associated with higher hemolymph silver levels. Furthermore, sea urchin showed lower hemolymph silver concentrations than shrimp and sea hare. These findings suggest that gills are an important route for silver uptake in marine invertebrates. In both sea hare and shrimp, hepatopancreas silver accumulation was concentration-dependent and this organ accumulated the most silver after 48 h of exposure, suggesting a possible involvement of the hepatopancreas in both silver accumulation and detoxification in marine invertebrates. In shrimp and sea hare, substantial silver accumulation in nervous tissues was detected, suggesting the need for further studies on possible behavioral effects of silver in these invertebrate species. In sea urchin, egg mass accumulated more silver than other tissues analyzed, indicating the need for future studies on possible reproductive effects of silver in sea urchin. In all three species, the lowest silver concentrations were observed in muscle, suggesting a low potential of this tissue for trophic transfer of silver.
Authors:
Adalto Bianchini; Richard C Playle; Chris M Wood; Patrick J Walsh
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-06-16
Journal Detail:
Title:  Aquatic toxicology (Amsterdam, Netherlands)     Volume:  84     ISSN:  0166-445X     ISO Abbreviation:  Aquat. Toxicol.     Publication Date:  2007 Aug 
Date Detail:
Created Date:  2007-08-20     Completed Date:  2007-11-30     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8500246     Medline TA:  Aquat Toxicol     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  182-9     Citation Subset:  IM    
Affiliation:
Departamento de Ciências Fisiológicas, Fundação Universidade Federal do Rio Grande, Campus Carreiros, Av. Itália, km 8, Rio Grande, RS 96201-900, Brazil. adalto@octopus.furg.br
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MeSH Terms
Descriptor/Qualifier:
Animals
Aplysia / drug effects,  metabolism*
Dose-Response Relationship, Drug
Gills / drug effects,  metabolism
Hemolymph / metabolism
Hepatopancreas / metabolism
Nervous System / metabolism
Penaeidae / drug effects,  metabolism*
Sea Urchins / drug effects,  metabolism*
Silver / pharmacokinetics*,  toxicity
Species Specificity
Time Factors
Tissue Distribution
Water Pollutants, Chemical / pharmacokinetics*,  toxicity
Chemical
Reg. No./Substance:
0/Water Pollutants, Chemical; 7440-22-4/Silver

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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