POLYCHLORINATED BIPHENYL CONGENER DISTRIBUTIONS IN BURBOT: EVIDENCE FOR A LATITUDE EFFECT
Identifieur interne : 000103 ( Main/Exploration ); précédent : 000102; suivant : 000104POLYCHLORINATED BIPHENYL CONGENER DISTRIBUTIONS IN BURBOT: EVIDENCE FOR A LATITUDE EFFECT
Auteurs : Martin A. Stapanian [États-Unis] ; Charles P. Madenjian [États-Unis] ; Peter A. Cott [Canada] ; Richard R. Rediske [États-Unis] ; James P. O'Keefe [États-Unis]Source :
- Environmental toxicology and chemistry [ 0730-7268 ] ; 2014.
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- Pascal (Inist)
English descriptors
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Abstract
The authors compared the distributions of the congeners of polychlorinated biphenyls (PCBs) detected in whole-body samples of burbot (Lola lota) from Great Slave Lake and Lake Erie. Total PCB concentrations in Great Slave Lake burbot were about one-sixtieth of the concentrations in Lake Erie burbot. Burbot from Great Slave Lake contained a higher proportion of lower-chlorinated (2-6 chlorines) congeners than did burbot from Lake Erie; the reverse occurred for more highly chlorinated (7-9 chlorines) congeners. Hexachloro congeners, followed by pentachloro congeners, dominated the proportions of total PCBs in burbot from both lakes. There were no differences between sexes in whole-body samples or between gonad and somatic tissues in the proportions of the 39 congeners and 3 sets of coeluters detected in burbot from Great Slave Lake. In contrast, there were distinct sex differences in congener distributions for older burbot from Lake Erie. The results generally supported a prediction of higher proportions of lower-chlorinated PCB homologs in organisms in remote polar areas. However, the latitudinal effect on PCB congener distribution may be more complex than that portrayed in previous studies.
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Stapanian</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Lake Erie Biological Station, US Geological Survey</s1><s2>Sandusky, Ohio</s2><s3>USA</s3><sZ>1 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Ohio</region></placeName></affiliation></author><author><name sortKey="Madenjian, Charles P" sort="Madenjian, Charles P" uniqKey="Madenjian C" first="Charles P." last="Madenjian">Charles P. Madenjian</name><affiliation wicri:level="2"><inist:fA14 i1="02"><s1>Great Lakes Science Center, US Geological Survey</s1><s2>Ann Arbor, Michigan</s2><s3>USA</s3><sZ>2 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Michigan</region></placeName></affiliation></author><author><name sortKey="Cott, Peter A" sort="Cott, Peter A" uniqKey="Cott P" first="Peter A." last="Cott">Peter A. Cott</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Laurier-GNWT Partnership, Wilfrid Laurier University</s1><s2>Yellowknife, Northwest Territories</s2><s3>CAN</s3><sZ>3 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>Yellowknife, Northwest Territories</wicri:noRegion></affiliation></author><author><name sortKey="Rediske, Richard R" sort="Rediske, Richard R" uniqKey="Rediske R" first="Richard R." last="Rediske">Richard R. Rediske</name><affiliation wicri:level="2"><inist:fA14 i1="04"><s1>Annis Water Resources Institute, Grand Valley State University</s1><s2>Muskegon, Michigan</s2><s3>USA</s3><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Michigan</region></placeName></affiliation></author><author><name sortKey="O Keefe, James P" sort="O Keefe, James P" uniqKey="O Keefe J" first="James P." last="O'Keefe">James P. 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Total PCB concentrations in Great Slave Lake burbot were about one-sixtieth of the concentrations in Lake Erie burbot. Burbot from Great Slave Lake contained a higher proportion of lower-chlorinated (2-6 chlorines) congeners than did burbot from Lake Erie; the reverse occurred for more highly chlorinated (7-9 chlorines) congeners. Hexachloro congeners, followed by pentachloro congeners, dominated the proportions of total PCBs in burbot from both lakes. There were no differences between sexes in whole-body samples or between gonad and somatic tissues in the proportions of the 39 congeners and 3 sets of coeluters detected in burbot from Great Slave Lake. In contrast, there were distinct sex differences in congener distributions for older burbot from Lake Erie. The results generally supported a prediction of higher proportions of lower-chlorinated PCB homologs in organisms in remote polar areas. However, the latitudinal effect on PCB congener distribution may be more complex than that portrayed in previous studies.</div></front></TEI><affiliations><list><country><li>Canada</li><li>États-Unis</li></country><region><li>Michigan</li><li>Ohio</li></region></list><tree><country name="États-Unis"><region name="Ohio"><name sortKey="Stapanian, Martin A" sort="Stapanian, Martin A" uniqKey="Stapanian M" first="Martin A." last="Stapanian">Martin A. Stapanian</name></region><name sortKey="Madenjian, Charles P" sort="Madenjian, Charles P" uniqKey="Madenjian C" first="Charles P." last="Madenjian">Charles P. Madenjian</name><name sortKey="O Keefe, James P" sort="O Keefe, James P" uniqKey="O Keefe J" first="James P." last="O'Keefe">James P. O'Keefe</name><name sortKey="Rediske, Richard R" sort="Rediske, Richard R" uniqKey="Rediske R" first="Richard R." last="Rediske">Richard R. Rediske</name></country><country name="Canada"><noRegion><name sortKey="Cott, Peter A" sort="Cott, Peter A" uniqKey="Cott P" first="Peter A." last="Cott">Peter A. Cott</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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