The presence of algae mitigates the toxicity of copper‐based algaecides to a nontarget organism
Copper‐based algaecides are routinely applied to target noxious algal blooms in freshwaters. Standard toxicity testing data with copper suggest that typical concentrations used to control algae can cause deleterious acute impacts to nontarget organisms. These “clean” water experiments lack algae, wh...
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| Veröffentlicht in: | Environmental toxicology and chemistry 2018-08, Vol.37 (8), p.2132-2142 |
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| creator | Bishop, West M. Willis, Ben E. Richardson, Robert J. Cope, W. Gregory |
| description | Copper‐based algaecides are routinely applied to target noxious algal blooms in freshwaters. Standard toxicity testing data with copper suggest that typical concentrations used to control algae can cause deleterious acute impacts to nontarget organisms. These “clean” water experiments lack algae, which are specifically targeted in field applications of algaecides and contain competing ligands. The present research measured the influence of algae on algaecide exposure and subsequent response of the nontarget species Daphnia magna to copper sulfate and an ethanolamine‐chelated copper algaecide (Captain®). Significant shifts (p |
| doi_str_mv | 10.1002/etc.4166 |
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Gregory</creator><creatorcontrib>Bishop, West M. ; Willis, Ben E. ; Richardson, Robert J. ; Cope, W. Gregory</creatorcontrib><description>Copper‐based algaecides are routinely applied to target noxious algal blooms in freshwaters. Standard toxicity testing data with copper suggest that typical concentrations used to control algae can cause deleterious acute impacts to nontarget organisms. These “clean” water experiments lack algae, which are specifically targeted in field applications of algaecides and contain competing ligands. The present research measured the influence of algae on algaecide exposure and subsequent response of the nontarget species Daphnia magna to copper sulfate and an ethanolamine‐chelated copper algaecide (Captain®). Significant shifts (p < 0.05) in D. magna 48‐h median lethal concentration (LC50) values were found when algae were present in exposures along with a copper salt or a chelated copper formulation. Copper sulfate 48‐h LC50 values shifted from 75.3 to 317.8 and 517.8 μg Cu/L, whereas Captain increased from 353.8 to 414.2 and 588.5 μg Cu/L in no algae, 5 × 105, and 5 × 106 cells/mL algae treatments, respectively. Larger shifts were measured with copper sulfate exposures, although Captain was less toxic to D. magna in all corresponding treatments. Captain was more effective at controlling Scenedesmus dimorphus at most concentrations, and control was inversely proportional to toxicity to D. magna. Overall, incorporating target competing ligands (i.e., algae) into standard toxicity testing is important for accurate risk assessment, and copper formulation can significantly alter algaecidal efficacy and risks to nontarget organisms. Environ Toxicol Chem 2018;37:2132–2142. © 2018 SETAC</description><identifier>ISSN: 0730-7268</identifier><identifier>EISSN: 1552-8618</identifier><identifier>DOI: 10.1002/etc.4166</identifier><identifier>PMID: 29736933</identifier><language>eng</language><publisher>United States: Blackwell Publishing Ltd</publisher><subject>Algae ; Algaecides ; Algal blooms ; Algicides ; Animals ; Copper ; Copper - toxicity ; Copper sulfate ; Copper Sulfate - toxicity ; Daphnia - drug effects ; Daphnia magna ; Environmental Exposure - analysis ; Ethanolamine ; Eutrophication ; Exposure ; Fresh Water ; Herbicides - toxicity ; Ligands ; Nonlinear Dynamics ; Nontarget organisms ; Regression Analysis ; Risk assessment ; Sulfates ; Toxicity ; Toxicity testing ; Toxicity Tests ; Water Pollutants, Chemical - toxicity ; Water quality</subject><ispartof>Environmental toxicology and chemistry, 2018-08, Vol.37 (8), p.2132-2142</ispartof><rights>2018 SETAC</rights><rights>2018 SETAC.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3866-f4a412bfd71bb5960e5154a12ea7f300187d6f0bc7137c5481ecc7bc27e147523</citedby><cites>FETCH-LOGICAL-c3866-f4a412bfd71bb5960e5154a12ea7f300187d6f0bc7137c5481ecc7bc27e147523</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fetc.4166$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fetc.4166$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,27924,27925,45574,45575</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/29736933$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Bishop, West M.</creatorcontrib><creatorcontrib>Willis, Ben E.</creatorcontrib><creatorcontrib>Richardson, Robert J.</creatorcontrib><creatorcontrib>Cope, W. Gregory</creatorcontrib><title>The presence of algae mitigates the toxicity of copper‐based algaecides to a nontarget organism</title><title>Environmental toxicology and chemistry</title><addtitle>Environ Toxicol Chem</addtitle><description>Copper‐based algaecides are routinely applied to target noxious algal blooms in freshwaters. Standard toxicity testing data with copper suggest that typical concentrations used to control algae can cause deleterious acute impacts to nontarget organisms. These “clean” water experiments lack algae, which are specifically targeted in field applications of algaecides and contain competing ligands. The present research measured the influence of algae on algaecide exposure and subsequent response of the nontarget species Daphnia magna to copper sulfate and an ethanolamine‐chelated copper algaecide (Captain®). Significant shifts (p < 0.05) in D. magna 48‐h median lethal concentration (LC50) values were found when algae were present in exposures along with a copper salt or a chelated copper formulation. Copper sulfate 48‐h LC50 values shifted from 75.3 to 317.8 and 517.8 μg Cu/L, whereas Captain increased from 353.8 to 414.2 and 588.5 μg Cu/L in no algae, 5 × 105, and 5 × 106 cells/mL algae treatments, respectively. Larger shifts were measured with copper sulfate exposures, although Captain was less toxic to D. magna in all corresponding treatments. Captain was more effective at controlling Scenedesmus dimorphus at most concentrations, and control was inversely proportional to toxicity to D. magna. Overall, incorporating target competing ligands (i.e., algae) into standard toxicity testing is important for accurate risk assessment, and copper formulation can significantly alter algaecidal efficacy and risks to nontarget organisms. Environ Toxicol Chem 2018;37:2132–2142. © 2018 SETAC</description><subject>Algae</subject><subject>Algaecides</subject><subject>Algal blooms</subject><subject>Algicides</subject><subject>Animals</subject><subject>Copper</subject><subject>Copper - toxicity</subject><subject>Copper sulfate</subject><subject>Copper Sulfate - toxicity</subject><subject>Daphnia - drug effects</subject><subject>Daphnia magna</subject><subject>Environmental Exposure - analysis</subject><subject>Ethanolamine</subject><subject>Eutrophication</subject><subject>Exposure</subject><subject>Fresh Water</subject><subject>Herbicides - toxicity</subject><subject>Ligands</subject><subject>Nonlinear Dynamics</subject><subject>Nontarget organisms</subject><subject>Regression Analysis</subject><subject>Risk assessment</subject><subject>Sulfates</subject><subject>Toxicity</subject><subject>Toxicity testing</subject><subject>Toxicity Tests</subject><subject>Water Pollutants, Chemical - toxicity</subject><subject>Water quality</subject><issn>0730-7268</issn><issn>1552-8618</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp10M1KxDAUBeAgijOOgk8gBTduOuanTdqlDP7BgJtxXdL0tmZom5qk6Ox8BJ_RJ7F1RgXB1V3cj8PhIHRK8JxgTC_Bq3lEON9DUxLHNEw4SfbRFAuGQ0F5MkFHzq0xJjxN00M0oalgPGVsiuTqCYLOgoNWQWDKQNaVhKDRXlfSgwv88PfmVSvtN-Nfma4D-_H2nksHxZYrXYzSBDJoTeulrcAHxlay1a45RgelrB2c7O4MPd5crxZ34fLh9n5xtQwVSzgPy0hGhOZlIUiexynHEJM4koSCFCUbqiei4CXOlSBMqDhKCCglckUFkEjElM3QxTa3s-a5B-ezRjsFdS1bML3LKGac4iiORnr-h65Nb9uh3aAEo1QkafIbqKxxzkKZdVY30m4ygrNx9myYPRtnH-jZLrDPGyh-4PfOAwi34EXXsPk3KBvMV-AndfyL2w</recordid><startdate>201808</startdate><enddate>201808</enddate><creator>Bishop, West M.</creator><creator>Willis, Ben E.</creator><creator>Richardson, Robert J.</creator><creator>Cope, W. Gregory</creator><general>Blackwell Publishing Ltd</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QO</scope><scope>7SN</scope><scope>7SS</scope><scope>7ST</scope><scope>7T7</scope><scope>7TK</scope><scope>7U7</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>K9.</scope><scope>P64</scope><scope>RC3</scope><scope>SOI</scope><scope>7X8</scope></search><sort><creationdate>201808</creationdate><title>The presence of algae mitigates the toxicity of copper‐based algaecides to a nontarget organism</title><author>Bishop, West M. ; Willis, Ben E. ; Richardson, Robert J. ; Cope, W. Gregory</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3866-f4a412bfd71bb5960e5154a12ea7f300187d6f0bc7137c5481ecc7bc27e147523</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Algae</topic><topic>Algaecides</topic><topic>Algal blooms</topic><topic>Algicides</topic><topic>Animals</topic><topic>Copper</topic><topic>Copper - toxicity</topic><topic>Copper sulfate</topic><topic>Copper Sulfate - toxicity</topic><topic>Daphnia - drug effects</topic><topic>Daphnia magna</topic><topic>Environmental Exposure - analysis</topic><topic>Ethanolamine</topic><topic>Eutrophication</topic><topic>Exposure</topic><topic>Fresh Water</topic><topic>Herbicides - toxicity</topic><topic>Ligands</topic><topic>Nonlinear Dynamics</topic><topic>Nontarget organisms</topic><topic>Regression Analysis</topic><topic>Risk assessment</topic><topic>Sulfates</topic><topic>Toxicity</topic><topic>Toxicity testing</topic><topic>Toxicity Tests</topic><topic>Water Pollutants, Chemical - toxicity</topic><topic>Water quality</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Bishop, West M.</creatorcontrib><creatorcontrib>Willis, Ben E.</creatorcontrib><creatorcontrib>Richardson, Robert J.</creatorcontrib><creatorcontrib>Cope, W. 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Gregory</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The presence of algae mitigates the toxicity of copper‐based algaecides to a nontarget organism</atitle><jtitle>Environmental toxicology and chemistry</jtitle><addtitle>Environ Toxicol Chem</addtitle><date>2018-08</date><risdate>2018</risdate><volume>37</volume><issue>8</issue><spage>2132</spage><epage>2142</epage><pages>2132-2142</pages><issn>0730-7268</issn><eissn>1552-8618</eissn><abstract>Copper‐based algaecides are routinely applied to target noxious algal blooms in freshwaters. Standard toxicity testing data with copper suggest that typical concentrations used to control algae can cause deleterious acute impacts to nontarget organisms. These “clean” water experiments lack algae, which are specifically targeted in field applications of algaecides and contain competing ligands. The present research measured the influence of algae on algaecide exposure and subsequent response of the nontarget species Daphnia magna to copper sulfate and an ethanolamine‐chelated copper algaecide (Captain®). Significant shifts (p < 0.05) in D. magna 48‐h median lethal concentration (LC50) values were found when algae were present in exposures along with a copper salt or a chelated copper formulation. Copper sulfate 48‐h LC50 values shifted from 75.3 to 317.8 and 517.8 μg Cu/L, whereas Captain increased from 353.8 to 414.2 and 588.5 μg Cu/L in no algae, 5 × 105, and 5 × 106 cells/mL algae treatments, respectively. Larger shifts were measured with copper sulfate exposures, although Captain was less toxic to D. magna in all corresponding treatments. Captain was more effective at controlling Scenedesmus dimorphus at most concentrations, and control was inversely proportional to toxicity to D. magna. Overall, incorporating target competing ligands (i.e., algae) into standard toxicity testing is important for accurate risk assessment, and copper formulation can significantly alter algaecidal efficacy and risks to nontarget organisms. Environ Toxicol Chem 2018;37:2132–2142. © 2018 SETAC</abstract><cop>United States</cop><pub>Blackwell Publishing Ltd</pub><pmid>29736933</pmid><doi>10.1002/etc.4166</doi><tpages>11</tpages></addata></record> |
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| subjects | Algae Algaecides Algal blooms Algicides Animals Copper Copper - toxicity Copper sulfate Copper Sulfate - toxicity Daphnia - drug effects Daphnia magna Environmental Exposure - analysis Ethanolamine Eutrophication Exposure Fresh Water Herbicides - toxicity Ligands Nonlinear Dynamics Nontarget organisms Regression Analysis Risk assessment Sulfates Toxicity Toxicity testing Toxicity Tests Water Pollutants, Chemical - toxicity Water quality |
| title | The presence of algae mitigates the toxicity of copper‐based algaecides to a nontarget organism |
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