Trace metals in arcid clam Scapharca inaequivalvis: effects of molluscan extracts on bioluminescent bacteria.
Chemosphere
; 65(4): 627-33, 2006 Oct.
Article
en En
| MEDLINE
| ID: mdl-16540148
ABSTRACT
The relationship between a supposed effect of molluscan extracts on bioluminescent bacteria and metal concentrations in the extracts was investigated. For this purpose a biotoxicological assay based on bioluminescent bacteria (BLB) and extracts from metal exposed molluscs, Scapharca inaequivalvis, was optimized to monitor Cd and Cu marine pollution. Cu and Cd concentrations increased in tissues of experimentally exposed molluscs. Molluscan extracts inhibited the bacterial luminescence, the inhibition decreasing as the time of mollusc exposure to metals increased, suggesting a reduction of the "bioactive" metals. In regard to the use of BLB test in environmental monitoring, the analysis of Cu, Cd, and metallothionein (MT) was first performed in tissues from molluscs collected in three different areas of Northern Adriatic Sea. Metal concentrations reached maximum values in the gills, while Cd was mostly bound to MT in the kidney. Significant differences in metals and MT concentrations were found depending on the sampling sites. The biotoxicological assay resulted slightly correlated with the biochemical parameters.
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Banco de datos:
MEDLINE
Asunto principal:
Extractos de Tejidos
/
Oligoelementos
/
Vibrio
/
Contaminantes Químicos del Agua
/
Monitoreo del Ambiente
/
Metales Pesados
/
Scapharca
Límite:
Animals
País/Región como asunto:
Europa
Idioma:
En
Revista:
Chemosphere
Año:
2006
Tipo del documento:
Article
País de afiliación:
Italia