Document Detail

Acute toxicities of four metals on the early life stages of the crab Chasmagnathus granulata from Bahía Blanca estuary, Argentina.
MedLine Citation:
PMID:  16098589     Owner:  NLM     Status:  MEDLINE    
Acute semistatic toxicity tests were carried out for 96 h with first zoeae and young crabs of Chasmagnathus granulata. Survival curves and LC50 (lethal concentration 50, the concentration which produces the death of 50% of the exposed population) indices for copper, zinc, cadmium, and lead were determined. Furthermore, mixture toxicity tests (Cd/Cu and Cd/Zn) with first-stage larvae were also carried out. The LC50-96 h values determined in this study were 1093.4 (881-1319) microg Pb2+ L(-1), 219.2 (188.9-248.9) microg Cu2+ L(-1), 172.1 (141.3-203.6) microg Zn2+ L(-1), and 47.8 (37.9-58.0) microg Cd2+ L(-1) for zoeae I and 130.1 (121.7-139.0) mg Cu2+ L(-1), 51.0 (41.9-61.6) mg Zn2+ L(-1), and 35.7 (30.1-41.9) mg Cd2+ L(-1) for young crabs. The LC50-96 h indices for mixture tests with zoeae I were 260.6 (227.3-286.3) microg Cd2+/Zn2+ L(-1) and 41.3 (37.4-60.7) microg Cd2+/Cu2+ L(-1). Cadmium presented the highest acute toxicity for both stages of the life cycle examined. The toxicity of the metals analyzed followed the order cadmium >zinc>copper>lead. First zoeae were more sensitive than young crabs to acute exposure to all metals analyzed. The young crabs were considered potentially dangerous agents of transference to the associated trophic chain because of their relatively elevated resistance and their capacity to bioaccumulate heavy metals in their tissues. Mixed toxicity tests carried out on first-stage larvae showed different kinds of interactions. Cadmium/copper presented an additive interaction trend while the mixture cadmium/zinc showed an antagonistic interaction.
Laura Ferrer; Santiago Andrade; Raúl Asteasuain; Jorge Marcovecchio
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2005-08-10
Journal Detail:
Title:  Ecotoxicology and environmental safety     Volume:  65     ISSN:  0147-6513     ISO Abbreviation:  Ecotoxicol. Environ. Saf.     Publication Date:  2006 Oct 
Date Detail:
Created Date:  2006-08-16     Completed Date:  2006-12-22     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7805381     Medline TA:  Ecotoxicol Environ Saf     Country:  United States    
Other Details:
Languages:  eng     Pagination:  209-17     Citation Subset:  IM    
Laboratorio de Química Marina, Instituto Argentino de Oceanografía, Complejo CRIBABB, C.C. 804, 8000 Bahía Blanca, Argentina.
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MeSH Terms
Aging / drug effects*
Brachyura / drug effects*,  growth & development
Cadmium / analysis,  toxicity
Copper / analysis,  toxicity
Environmental Monitoring
Larva / drug effects,  growth & development
Lead / analysis,  toxicity
Lethal Dose 50
Metals, Heavy / analysis,  toxicity*
Water Pollutants, Chemical / analysis,  toxicity*
Zinc / analysis,  toxicity
Reg. No./Substance:
0/Metals, Heavy; 0/Water Pollutants, Chemical; 7439-92-1/Lead; 7440-43-9/Cadmium; 7440-50-8/Copper; 7440-66-6/Zinc

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