Document Detail

Toxicity of oil sands to early life stages of fathead minnows (Pimephales promelas).
MedLine Citation:
PMID:  15230323     Owner:  NLM     Status:  MEDLINE    
The present study examines the effects of exposure to oil sands on the early life stages (ELS) of fathead minnows (Pimephales promelas). Sediments within and outside natural oil sand deposits were collected from sites along the Athabasca River (AB, Canada). The ELS toxicity tests were conducted with control water, natural oil sands, reference sediments, and oil-refining wastewater pond sediments. Eggs and larvae were exposed to 0.05 to 25.0 g sediment/L and observed for mortality, hatching, malformations, growth, and cytochrome P4501A induction as measured by immunohistochemistry. Natural bitumen and wastewater pond sediments caused significant hatching alterations and exposure-related increases in ELS mortality, malformations, and reduced size. Larval deformities included edemas, hemorrhages, and spinal malformations. Exposure to reference sediments and controls showed negligible embryo mortality and malformations and excellent larval survival. Sediment analyses using gas chromatography-mass spectrometry revealed high concentrations of alkyl-substituted polyaromatic hydrocarbons (PAHs) compared to unsubstituted PAHs in natural oil sands (220-360 microg/g) and oil-mining wastewater pond sediments (1,300 microg/g). The ELS sediment toxicity tests are rapid and sensitive bioassays that are useful in the assessment of petroleum toxicity to aquatic organisms.
Maria V Colavecchia; Sean M Backus; Peter V Hodson; Joanne L Parrott
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Environmental toxicology and chemistry / SETAC     Volume:  23     ISSN:  0730-7268     ISO Abbreviation:  Environ. Toxicol. Chem.     Publication Date:  2004 Jul 
Date Detail:
Created Date:  2004-07-02     Completed Date:  2004-09-30     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8308958     Medline TA:  Environ Toxicol Chem     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1709-18     Citation Subset:  IM    
Queen's University, Department of Biology, Kingston, Ontario K7L 3N6, Canada.
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MeSH Terms
Cyprinidae / growth & development
Cytochrome P-450 CYP1A1 / metabolism
Environmental Pollution
Geologic Sediments / chemistry
Larva / drug effects*,  growth & development
Petroleum / toxicity*
Polycyclic Hydrocarbons, Aromatic / analysis
Silicon Dioxide*
Soil Pollutants / toxicity*
Reg. No./Substance:
0/Petroleum; 0/Polycyclic Hydrocarbons, Aromatic; 0/Soil Pollutants; 7631-86-9/Silicon Dioxide; EC P-450 CYP1A1

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

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