Document Detail


Seasonal variations in the effect of zinc pyrithione and copper pyrithione on pelagic phytoplankton communities.
MedLine Citation:
PMID:  15261454     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The relationship between environmental factors, community composition and the sensitivity of pelagic phytoplankton to the antifouling agents zinc pyrithione (ZPT) and copper pyrithione (CPT) was studied using phytoplankton communities collected from March until August 2001 in Roskilde fjord, Denmark. Sensitivity to ZPT and CPT was measured as EC50 values obtained from dose-response curves of photosynthesis to ZPT and CPT. EC50 for ZPT and CPT varied between 2 and 60 nM and 4 and 25 nM, respectively. Changes in sensitivity throughout the season were related to changes in phytoplankton community composition and density, and to nutrient levels. It was found that the variation in sensitivity of ZPT and CPT was related to the abundance of the groups Cryptophyceae, Bacillariophycaea and Dinophyceae when they were dominating the community. Furthermore, the sensitivity to ZPT was increased at low concentrations of phosphate per cell (<0.2 nmol/cell). For CPT there was a negative correlation between toxicity and phosphate concentration in the water. Consequently, in aquatic environments where phytoplankton is phosphate limited the effect of ZPT and CPT may be enhanced.
Authors:
K Maraldo; I Dahllöf
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Aquatic toxicology (Amsterdam, Netherlands)     Volume:  69     ISSN:  0166-445X     ISO Abbreviation:  Aquat. Toxicol.     Publication Date:  2004 Aug 
Date Detail:
Created Date:  2004-07-20     Completed Date:  2004-09-16     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8500246     Medline TA:  Aquat Toxicol     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  189-98     Citation Subset:  IM    
Affiliation:
Department of Marine Ecology, National Environmental Research Institute, 4000 Roskilde, Denmark.
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MeSH Terms
Descriptor/Qualifier:
Biomass
Carbon Radioisotopes
Cluster Analysis
Denmark
Dose-Response Relationship, Drug
North Sea
Organometallic Compounds / toxicity*
Phosphates / metabolism
Photosynthesis / drug effects
Phytoplankton / drug effects*,  physiology
Population Density
Pyridines / toxicity*
Seasons*
Water Pollutants, Chemical / toxicity*
Chemical
Reg. No./Substance:
0/Carbon Radioisotopes; 0/Organometallic Compounds; 0/Phosphates; 0/Pyridines; 0/Water Pollutants, Chemical; 0/copper pyrithione; 13463-41-7/zinc pyrithione

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


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