Document Detail

Habitat-specific bioaccumulation of methylmercury in invertebrates of small mid-latitude lakes in North America.
MedLine Citation:
PMID:  20965629     Owner:  NLM     Status:  In-Process    
We examined habitat-specific bioaccumulation of methylmercury (MeHg) in aquatic food webs by comparing concentrations in pelagic zooplankton to those in littoral macroinvertebrates from 52 mid-latitude lakes in North America. Invertebrate MeHg concentrations were primarily correlated with water pH, and after controlling for this influence, pelagic zooplankton had significantly higher MeHg concentrations than littoral primary consumers but lower MeHg than littoral secondary consumers. Littoral primary consumers and pelagic zooplankton are two dominant prey for fish, and greater MeHg in zooplankton is likely sufficient to increase bioaccumulation in pelagic feeders. Intensive sampling of 8 lakes indicated that habitat-specific bioaccumulation in invertebrates (of similar trophic level) may result from spatial variation in aqueous MeHg concentration or from more efficient uptake of aqueous MeHg into the pelagic food web. Our findings demonstrate that littoral-pelagic differences in MeHg bioaccumulation are widespread in small mid-latitude lakes.
John Chételat; Marc Amyot; Edenise Garcia
Related Documents :
20947729 - The role of discharge variation in scaling of drainage area and food chain length in ri...
7214229 - Influence of methylheptenone and related phytoplankton norcarotenoids on heterotrophic ...
14570409 - Inter- and intra-annual chemical variability during the ice-free season in lakes with d...
11833489 - Organochlorine and butyltin residues in walleye pollock (theragra chalcogramma) from be...
11547999 - Planning of wastewater treatment and disposal systems of istanbul metropolitan area.
12380979 - Lake constance--a model for integrated lake restoration with international cooperation.
9143819 - Food control systems in canada.
6131779 - Seasonally-related physiological and behavioural changes in captive richardson's ground...
24631299 - Human cognitive function and the obesogenic environment.
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Environmental pollution (Barking, Essex : 1987)     Volume:  159     ISSN:  1873-6424     ISO Abbreviation:  Environ. Pollut.     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2010-11-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8804476     Medline TA:  Environ Pollut     Country:  England    
Other Details:
Languages:  eng     Pagination:  10-7     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Elsevier Ltd. All rights reserved.
Groupe de recherche interuniversitaire en limnologie, Département de sciences biologiques, Université de Montréal, Montréal, Québec H3C 3J7, Canada.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

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

Previous Document:  Molecular pathogenesis and targeted therapies for NOTCH1-induced T-cell acute lymphoblastic leukemia...
Next Document:  Influence of arbuscular mycorrhizal fungi on the growth and nutrient status of bermudagrass grown in...