Document Detail

Sodium sulfate impacts feeding, specific dynamic action, and growth rate in the freshwater bivalve Corbicula fluminea.
MedLine Citation:
PMID:  17590452     Owner:  NLM     Status:  MEDLINE    
Sodium sulfate is a ubiquitous salt that reaches toxic concentrations due to mining and other industrial activities, yet is currently unregulated at the Federal level in the United States. Previous studies have documented reduced growth of clams downstream of sulfate-dominated effluents, altered bioenergetics in filter-feeding invertebrates, and interactions between sulfate and other toxicants. Therefore, the purpose of this study was to determine if sodium sulfate affects the bioenergetics of the filter-feeding, freshwater bivalve, Corbicula fluminea, and the mechanism by which the effects are elicited. In addition to measuring effects on feeding, respiration and growth rates, I evaluated the relative sensitivity of a green algae consumed by clams to determine if top-down or bottom-up effects might be exhibited under field conditions. This study demonstrated that sodium sulfate had no effect on basal metabolic rates, but significantly reduced the feeding, post-feeding metabolic, and growth rates of C. fluminea. The proposed mechanism for these impacts is that filtering rates are reduced upon exposure, resulting in reduced food consumption and therefore, preventing increased metabolic rates normally associated with post-feeding specific dynamic action (SDA). In the field, these effects may cause changes in whole stream respiration rates and organic matter dynamics, as well as alter uptake rates of other food-associated contaminants like selenium, the toxicity of which is known to be antagonized by sulfate, in filter-feeding bivalves.
David John Soucek
Publication Detail:
Type:  Comparative Study; Journal Article     Date:  2007-05-18
Journal Detail:
Title:  Aquatic toxicology (Amsterdam, Netherlands)     Volume:  83     ISSN:  0166-445X     ISO Abbreviation:  Aquat. Toxicol.     Publication Date:  2007 Aug 
Date Detail:
Created Date:  2007-07-09     Completed Date:  2007-10-23     Revised Date:  2013-01-24    
Medline Journal Info:
Nlm Unique ID:  8500246     Medline TA:  Aquat Toxicol     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  315-22     Citation Subset:  IM    
Illinois Natural History Survey, 1816 S. Oak St., Champaign, IL 61820, USA.
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MeSH Terms
Body Weight / drug effects
Cell Respiration / drug effects
Chlorophyta / drug effects,  growth & development,  metabolism
Corbicula / drug effects*,  growth & development,  physiology
Feeding Behavior / drug effects
Oxygen Consumption / drug effects
Sulfates / toxicity*
Time Factors
Water Pollutants, Chemical / toxicity*
Reg. No./Substance:
0/Sulfates; 0/Water Pollutants, Chemical; 0YPR65R21J/sodium sulfate

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

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