Document Detail


Mouthpart deformities and community composition of Chironomidae (Diptera) larvae downstream of metal mines in New Brunswick, Canada.
MedLine Citation:
PMID:  12463564     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The effect of metal enrichment on chironomid communities was examined in streams receiving mine drainage from metal mining operations in New Brunswick, Canada. At five sites receiving mine drainage, metal concentrations were significantly (p < 0.05) elevated in water (Zn), periphyton (Cd, Co, Cu, and Zn), and chironomid tissue (Cu, Cd, and Zn) relative to five paired reference locations. Metal concentrations in chironomid larvae were significantly correlated with concentrations in both water and periphyton. Chironomid communities were severely affected at sites receiving mine drainage as demonstrated by reduced genera richness and altered community composition. Sites receiving mine drainage exhibited an increased abundance of metal-tolerant Orthocladiinae and a reduced abundance of metal-sensitive Tanytarsini relative to reference sites. The incidence of mentum deformities was significantly elevated at sites receiving mine drainage (1.43 +/- 0.24%), with the mean percentage approaching a doubling of that observed at reference sites (0.79 +/- 0.22%). Trace metal concentrations at mine-associated streams in New Brunswick significantly affected the benthic community and have the potential to alter the structure and function of these aquatic ecosystems.
Authors:
Erin O Swansburg; Wayne L Fairchild; Brian J Fryer; Jan J H Ciborowski
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Environmental toxicology and chemistry / SETAC     Volume:  21     ISSN:  0730-7268     ISO Abbreviation:  Environ. Toxicol. Chem.     Publication Date:  2002 Dec 
Date Detail:
Created Date:  2002-12-04     Completed Date:  2003-03-10     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:  2675-84     Citation Subset:  IM    
Affiliation:
Department of Biological Sciences, University of Windsor, Windsor, Ontario N9B 3P4, Canada. swansburge@dfo-mpo.gc.ca
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MeSH Terms
Descriptor/Qualifier:
Animals
Chironomidae / embryology*
Larva / growth & development
Metals, Heavy / adverse effects*
Mining
Mouth Abnormalities / etiology*,  veterinary*
New Brunswick
Water Pollutants / adverse effects*
Chemical
Reg. No./Substance:
0/Metals, Heavy; 0/Water Pollutants

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


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