Polychlorinated Biphenyl Concentrations of Burbot Lota lota From Great Slave Lake Are Very Low but Vary by Sex
Identifieur interne : 000102 ( Main/Exploration ); précédent : 000101; suivant : 000103Polychlorinated Biphenyl Concentrations of Burbot Lota lota From Great Slave Lake Are Very Low but Vary by Sex
Auteurs : C. P. Madenjian [États-Unis] ; M. A. Stapanian [États-Unis] ; P. A. Cott [Canada] ; R. R. Rediske [États-Unis] ; J. P. O'Keefe [États-Unis]Source :
- Archives of environmental contamination and toxicology : (Print) [ 0090-4341 ] ; 2014.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Lac.
English descriptors
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Abstract
Total polychlorinated biphenyl concentrations (ΣPCBs) in whole fish were determined for 18 ripe female burbot Lota lota and 14 ripe male burbot from Great Slave Lake, a lake with no known point sources of PCBs. In addition, ΣPCBs were determined in both somatic tissue and gonads for a randomly selected subset of 5 females and 5 males. Mean ΣPCBs for females and males were 2.89 and 3.76 ng/g, respectively. Thus, males had 30 % greater ΣPCBs than females. Based on ΣPCB determinations for somatic tissue and gonads, ΣPCBs of females and males would be expected to decrease by 18 % and increase by 6 %, respectively, immediately after spawning due to the release of gametes. Results from a previous study in eastern Lake Erie indicated that males had 28 and 71 % greater ΣPCBs than females from populations of younger (ages 6-13 years) and older (ages 14-17 years) burbot, respectively. Thus, although younger burbot from Lake Erie had approximately 50 times greater ΣPCBs than Great Slave Lake burbot, the relative difference in ΣPCBs between the sexes was remarkably similar across both populations. Our results supported the contention that the widening of the difference in ΣPCBs between the sexes in older burbot from Lake Erie was attributable to a "hot spot" effect operating on older burbot because Lake Erie has received PCB point source loadings. Our results also supported the contention that male fish expend energy at a rate between 15 and 30 % greater than females. Eventually, these results will be useful in developing sex-specific bioenergetics models for fish.
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P." last="Madenjian">C. P. Madenjian</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Great Lakes Science Center, United States Geological Survey, 1451 Green Road</s1><s2>Ann Arbor, MI 48105</s2><s3>USA</s3><sZ>1 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Michigan</region></placeName></affiliation></author><author><name sortKey="Stapanian, M A" sort="Stapanian, M A" uniqKey="Stapanian M" first="M. A." last="Stapanian">M. A. Stapanian</name><affiliation wicri:level="2"><inist:fA14 i1="02"><s1>Lake Erie Biological Station, Great Lakes Science Center, United States Geological Survey, 6100 Columbus Avenue</s1><s2>Sandusky, OH 44870</s2><s3>USA</s3><sZ>2 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Ohio</region></placeName></affiliation></author><author><name sortKey="Cott, P A" sort="Cott, P A" uniqKey="Cott P" first="P. A." last="Cott">P. A. Cott</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Laurier-GNWT Partnership, Wilfred Laurier University, Box 1591</s1><s2>Yellowknife, NT X1A 2P2</s2><s3>CAN</s3><sZ>3 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>Yellowknife, NT X1A 2P2</wicri:noRegion></affiliation></author><author><name sortKey="Rediske, R R" sort="Rediske, R R" uniqKey="Rediske R" first="R. R." last="Rediske">R. R. Rediske</name><affiliation wicri:level="2"><inist:fA14 i1="04"><s1>Annis Water Resources Institute, Grand Valley State University, 740 West Shoreline Drive</s1><s2>Muskegon, MI 49441</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, J P" sort="O Keefe, J P" uniqKey="O Keefe J" first="J. P." last="O'Keefe">J. P. O'Keefe</name><affiliation wicri:level="2"><inist:fA14 i1="04"><s1>Annis Water Resources Institute, Grand Valley State University, 740 West Shoreline Drive</s1><s2>Muskegon, MI 49441</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></analytic><series><title level="j" type="main">Archives of environmental contamination and toxicology : (Print)</title><title level="j" type="abbreviated">Arch. environ. contam. toxicol. : (Print)</title><idno type="ISSN">0090-4341</idno><imprint><date when="2014">2014</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Archives of environmental contamination and toxicology : (Print)</title><title level="j" type="abbreviated">Arch. environ. contam. toxicol. : (Print)</title><idno type="ISSN">0090-4341</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Concentration measurement</term><term>Freshwater environment</term><term>Gender</term><term>Great Slave Lake</term><term>Lake Erie</term><term>Lakes</term><term>Lota lota</term><term>Polychlorobiphenyls</term><term>Sex</term><term>Water pollution</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Polychlorobiphényles</term><term>Mesure concentration</term><term>Lota lota</term><term>Lac</term><term>Sexe</term><term>Pollution eau</term><term>Milieu eau douce</term><term>Genre</term><term>Lac Erié</term><term>Grand Lac de l'Esclave</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Lac</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Total polychlorinated biphenyl concentrations (ΣPCBs) in whole fish were determined for 18 ripe female burbot Lota lota and 14 ripe male burbot from Great Slave Lake, a lake with no known point sources of PCBs. In addition, ΣPCBs were determined in both somatic tissue and gonads for a randomly selected subset of 5 females and 5 males. Mean ΣPCBs for females and males were 2.89 and 3.76 ng/g, respectively. Thus, males had 30 % greater ΣPCBs than females. Based on ΣPCB determinations for somatic tissue and gonads, ΣPCBs of females and males would be expected to decrease by 18 % and increase by 6 %, respectively, immediately after spawning due to the release of gametes. Results from a previous study in eastern Lake Erie indicated that males had 28 and 71 % greater ΣPCBs than females from populations of younger (ages 6-13 years) and older (ages 14-17 years) burbot, respectively. Thus, although younger burbot from Lake Erie had approximately 50 times greater ΣPCBs than Great Slave Lake burbot, the relative difference in ΣPCBs between the sexes was remarkably similar across both populations. Our results supported the contention that the widening of the difference in ΣPCBs between the sexes in older burbot from Lake Erie was attributable to a "hot spot" effect operating on older burbot because Lake Erie has received PCB point source loadings. Our results also supported the contention that male fish expend energy at a rate between 15 and 30 % greater than females. Eventually, these results will be useful in developing sex-specific bioenergetics models for fish.</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="Michigan"><name sortKey="Madenjian, C P" sort="Madenjian, C P" uniqKey="Madenjian C" first="C. P." last="Madenjian">C. P. Madenjian</name></region><name sortKey="O Keefe, J P" sort="O Keefe, J P" uniqKey="O Keefe J" first="J. P." last="O'Keefe">J. P. O'Keefe</name><name sortKey="Rediske, R R" sort="Rediske, R R" uniqKey="Rediske R" first="R. R." last="Rediske">R. R. Rediske</name><name sortKey="Stapanian, M A" sort="Stapanian, M A" uniqKey="Stapanian M" first="M. A." last="Stapanian">M. A. Stapanian</name></country><country name="Canada"><noRegion><name sortKey="Cott, P A" sort="Cott, P A" uniqKey="Cott P" first="P. A." last="Cott">P. A. Cott</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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