Document Detail


Trophic relationships and transference of cadmium, copper, lead and zinc in a subtropical coastal lagoon food web from SE Gulf of California.
MedLine Citation:
PMID:  19818990     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Trophic relationships and heavy metal transference in a coastal subtropical lagoon marine food web were investigated through the use of stable isotopes in food sources and biota. A selective extraction scheme was applied to the surface sediments as an indirect way to evaluate the potential of toxicity of metals. Results showed that cadmium, copper, lead and zinc concentrations were within sediment quality guidelines criteria. Concentrations of these metals in organisms varied widely among functional groups and within the same and closely related taxa. delta(13)C values varied significantly among organisms from different functional groups, while the delta(15)N values varied according with their feeding habits. Cd, Cu, Pb, and Zn were not positively transferred (biomagnification factor <1) through entire food web. However, a partial positive transference was observed for Cu and Zn involving three trophic levels (from the phytoplankton to crab as secondary consumer).
Authors:
M E Jara-Marini; M F Soto-Jim??nez; F P??ez-Osuna
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-10-09
Journal Detail:
Title:  Chemosphere     Volume:  77     ISSN:  1879-1298     ISO Abbreviation:  Chemosphere     Publication Date:  2009 Nov 
Date Detail:
Created Date:  2009-11-12     Completed Date:  2010-02-04     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0320657     Medline TA:  Chemosphere     Country:  England    
Other Details:
Languages:  eng     Pagination:  1366-73     Citation Subset:  IM    
Affiliation:
Centro de Investigaci??n en Alimentaci??n y Desarrollo, A.C. Km 0.6 Carretera a La Victoria Hermosillo, Sonora, M??xico CP 83 000, M??xico. mjara@ciad.mx
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MeSH Terms
Descriptor/Qualifier:
Animals
Cadmium / toxicity*
California
Copper / toxicity*
Environmental Monitoring
Food Chain*
Geologic Sediments / chemistry*
Lead / toxicity*
Water Pollutants, Chemical / chemistry*,  toxicity
Zinc / toxicity*
Chemical
Reg. No./Substance:
0/Water Pollutants, Chemical; 7439-92-1/Lead; 7440-43-9/Cadmium; 7440-50-8/Copper; 7440-66-6/Zinc

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