Document Detail


Assessment of lead uptake in reptilian prey species.
MedLine Citation:
PMID:  17490716     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
As part of an investigation determining the trophically available fraction of metals in a model terrestrial food web, i.e., invertebrate prey to Western fence lizards (Sceloporus occidentalis), we evaluated the ability of several invertebrate prey to bioaccumulate lead and to form metals-rich granules, which are hypothesized to be non-available to predators. Crickets (Acheta domestica), tenebroid beetle larvae (Tenebrio molitor), and isopods (Porcellio scaber) were selected as model prey organisms. Lack of standard exposure methodologies for these species has presented a barrier to trophic transfer evaluations, as each species has particular requirements that create challenges for designing exposure conditions. We were able to devise exposure conditions for all three species that allow long-term exposure studies. All prey organisms accumulated lead from contaminated food, and for all species the majority of the accumulated Pb was associated with the exoskeleton (>50%), with metals-rich granules accounting for most of the remaining accumulated lead.
Authors:
Laura S Inouye; Leslie J Yoo; Larry G Talent; Joan U Clarke; Robert P Jones; Jeffery A Steevens; Robert E Boyd
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2007-05-08
Journal Detail:
Title:  Chemosphere     Volume:  68     ISSN:  0045-6535     ISO Abbreviation:  Chemosphere     Publication Date:  2007 Jul 
Date Detail:
Created Date:  2007-06-04     Completed Date:  2007-09-14     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0320657     Medline TA:  Chemosphere     Country:  England    
Other Details:
Languages:  eng     Pagination:  1591-6     Citation Subset:  IM    
Affiliation:
US Army Corps of Engineers, Engineer Research and Development Center, 3909 Halls Ferry Road, Vicksburg, MS 39180, USA.
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MeSH Terms
Descriptor/Qualifier:
Animal Feed
Animals
Arthropods / metabolism*
Body Burden
Environmental Pollutants / analysis,  pharmacokinetics*
Food Chain
Lead / analysis,  pharmacokinetics*
Lizards / metabolism*
Species Specificity
Chemical
Reg. No./Substance:
0/Environmental Pollutants; 7439-92-1/Lead

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


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