Oil droplet ingestion and oil fouling in the copepod Calanus finmarchicus exposed to mechanically and chemically dispersed crude oil
The rates of ingestion of oil microdroplets and oil fouling were investigated in the zooplankton filter‐feeder Calanus finmarchicus (Gunnerus, 1770) at 3 concentrations of oil dispersions ranging from 0.25 mg/L to 5.6 mg/L. To compare responses to mechanically and chemically dispersed oil, the copep...
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| Veröffentlicht in: | Environmental toxicology and chemistry 2015-08, Vol.34 (8), p.1899-1906 |
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| container_title | Environmental toxicology and chemistry |
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| creator | Nordtug, Trond Olsen, Anders J. Salaberria, Iurgi Øverjordet, Ida B. Altin, Dag Størdal, Ingvild F. Hansen, Bjørn Henrik |
| description | The rates of ingestion of oil microdroplets and oil fouling were investigated in the zooplankton filter‐feeder Calanus finmarchicus (Gunnerus, 1770) at 3 concentrations of oil dispersions ranging from 0.25 mg/L to 5.6 mg/L. To compare responses to mechanically and chemically dispersed oil, the copepods were exposed to comparable dispersions of micron‐sized oil droplets made with and without the use of a chemical dispersant (similar oil droplet size range and oil concentrations) together with a constant supply of microalgae for a period of 4 d. The filtration rates as well as accumulation of oil droplets decreased with increasing exposure concentration. Thus the estimated total amount of oil associated with the copepod biomass for the 2 lowest exposures in the range 11 mL/kg to 17 mL/kg was significantly higher than the approximately 6 mL/kg found in the highest exposure. For the 2 lowest concentrations the filtration rates were significantly higher in the presence of chemical dispersant. Furthermore, a significant increase in the amount of accumulated oil in the presence of dispersant was observed in the low exposure group. Environ Toxicol Chem 2015;34:1899–1906. © 2015 SETAC |
| doi_str_mv | 10.1002/etc.3007 |
| format | Article |
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To compare responses to mechanically and chemically dispersed oil, the copepods were exposed to comparable dispersions of micron‐sized oil droplets made with and without the use of a chemical dispersant (similar oil droplet size range and oil concentrations) together with a constant supply of microalgae for a period of 4 d. The filtration rates as well as accumulation of oil droplets decreased with increasing exposure concentration. Thus the estimated total amount of oil associated with the copepod biomass for the 2 lowest exposures in the range 11 mL/kg to 17 mL/kg was significantly higher than the approximately 6 mL/kg found in the highest exposure. For the 2 lowest concentrations the filtration rates were significantly higher in the presence of chemical dispersant. Furthermore, a significant increase in the amount of accumulated oil in the presence of dispersant was observed in the low exposure group. 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To compare responses to mechanically and chemically dispersed oil, the copepods were exposed to comparable dispersions of micron‐sized oil droplets made with and without the use of a chemical dispersant (similar oil droplet size range and oil concentrations) together with a constant supply of microalgae for a period of 4 d. The filtration rates as well as accumulation of oil droplets decreased with increasing exposure concentration. Thus the estimated total amount of oil associated with the copepod biomass for the 2 lowest exposures in the range 11 mL/kg to 17 mL/kg was significantly higher than the approximately 6 mL/kg found in the highest exposure. For the 2 lowest concentrations the filtration rates were significantly higher in the presence of chemical dispersant. Furthermore, a significant increase in the amount of accumulated oil in the presence of dispersant was observed in the low exposure group. Environ Toxicol Chem 2015;34:1899–1906. © 2015 SETAC</description><subject>Animal populations</subject><subject>Animals</subject><subject>Biotransformation</subject><subject>Calanus finmarchicus</subject><subject>Chemical dispersant</subject><subject>Copepoda - chemistry</subject><subject>Copepoda - drug effects</subject><subject>Copepoda - metabolism</subject><subject>Copepods</subject><subject>Crude oil</subject><subject>Dispersants</subject><subject>Dispersed oil</subject><subject>Dispersion</subject><subject>Dispersions</subject><subject>Droplets</subject><subject>Environmental protection</subject><subject>Exposure</subject><subject>Filtration</subject><subject>Fouling</subject><subject>Gas Chromatography-Mass Spectrometry</subject><subject>Ingestion</subject><subject>Insecticides</subject><subject>Invertebrates</subject><subject>Microscopy, Fluorescence</subject><subject>Oil</subject><subject>Oil droplet filtering</subject><subject>Petroleum - analysis</subject><subject>Petroleum - metabolism</subject><subject>Petroleum Pollution</subject><subject>Polycyclic Aromatic Hydrocarbons - analysis</subject><subject>Polycyclic Aromatic Hydrocarbons - metabolism</subject><subject>Surface-Active Agents - chemistry</subject><subject>Taxonomy</subject><subject>Toxicity</subject><subject>Water Pollutants, Chemical - chemistry</subject><subject>Water Pollutants, Chemical - toxicity</subject><subject>Zooplankton</subject><issn>0730-7268</issn><issn>1552-8618</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkdGK1DAUhoMo7rgKPoEUvPGm60nSNMmlDLrrOriKipchk546WTtNTVrcuffBN3XrCoLiVTg5H1_48xPymMIJBWDPcXQnHEDeISsqBCtVTdVdsgLJoZSsVkfkQUqXALTWWt8nR0woIYSSK_LjwndFE8PQ4Vj4_gum0Ye-sH1ThLxpw9Tl27wpxh0WLgw4hKZY2872Uypa3-9tdDvv8oBXQ0jYFGMo9uh2tvfOdt3hp8vtcL-MjU8Dxhl0cWpwfuYhudfaLuGj5Twmn169_Lg-KzcXp6_XLzalE0rJUrTUoqOSVzkJkwwUtLbeKo28VVuqHK9aTXmlmdtSpMwJp1FXUtacg-CSH5NnN94hhm9Tjmr2PjnschgMUzJUUqWlUBT-AwUBGqiY0ad_oJdhin0OYpjktWAVyOpfVHYBrWQF-vezLoaUIrZmiD5_8cFQMHPVJldt5qoz-mQRTts9Nrfgr24zUN4A332Hh7-KTGYW4cL7NOLVLW_jV1NLLoX5_PbUyDdn787Z5r35wK8Bb4a_8w</recordid><startdate>201508</startdate><enddate>201508</enddate><creator>Nordtug, Trond</creator><creator>Olsen, Anders J.</creator><creator>Salaberria, Iurgi</creator><creator>Øverjordet, Ida B.</creator><creator>Altin, Dag</creator><creator>Størdal, Ingvild F.</creator><creator>Hansen, Bjørn Henrik</creator><general>Blackwell Publishing Ltd</general><scope>BSCLL</scope><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>F1W</scope><scope>H95</scope><scope>H98</scope><scope>L.G</scope><scope>7SU</scope><scope>KR7</scope></search><sort><creationdate>201508</creationdate><title>Oil droplet ingestion and oil fouling in the copepod Calanus finmarchicus exposed to mechanically and chemically dispersed crude oil</title><author>Nordtug, Trond ; 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To compare responses to mechanically and chemically dispersed oil, the copepods were exposed to comparable dispersions of micron‐sized oil droplets made with and without the use of a chemical dispersant (similar oil droplet size range and oil concentrations) together with a constant supply of microalgae for a period of 4 d. The filtration rates as well as accumulation of oil droplets decreased with increasing exposure concentration. Thus the estimated total amount of oil associated with the copepod biomass for the 2 lowest exposures in the range 11 mL/kg to 17 mL/kg was significantly higher than the approximately 6 mL/kg found in the highest exposure. For the 2 lowest concentrations the filtration rates were significantly higher in the presence of chemical dispersant. Furthermore, a significant increase in the amount of accumulated oil in the presence of dispersant was observed in the low exposure group. Environ Toxicol Chem 2015;34:1899–1906. © 2015 SETAC</abstract><cop>United States</cop><pub>Blackwell Publishing Ltd</pub><pmid>25855587</pmid><doi>10.1002/etc.3007</doi><tpages>8</tpages></addata></record> |
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| ispartof | Environmental toxicology and chemistry, 2015-08, Vol.34 (8), p.1899-1906 |
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| source | MEDLINE; Wiley Online Library Journals Frontfile Complete |
| subjects | Animal populations Animals Biotransformation Calanus finmarchicus Chemical dispersant Copepoda - chemistry Copepoda - drug effects Copepoda - metabolism Copepods Crude oil Dispersants Dispersed oil Dispersion Dispersions Droplets Environmental protection Exposure Filtration Fouling Gas Chromatography-Mass Spectrometry Ingestion Insecticides Invertebrates Microscopy, Fluorescence Oil Oil droplet filtering Petroleum - analysis Petroleum - metabolism Petroleum Pollution Polycyclic Aromatic Hydrocarbons - analysis Polycyclic Aromatic Hydrocarbons - metabolism Surface-Active Agents - chemistry Taxonomy Toxicity Water Pollutants, Chemical - chemistry Water Pollutants, Chemical - toxicity Zooplankton |
| title | Oil droplet ingestion and oil fouling in the copepod Calanus finmarchicus exposed to mechanically and chemically dispersed crude oil |
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