Mercury concentrations in gonad, liver, and muscle of white sturgeon Acipenser transmontanus in the lower columbia river
Identifieur interne : 000210 ( PascalFrancis/Corpus ); précédent : 000209; suivant : 000211Mercury concentrations in gonad, liver, and muscle of white sturgeon Acipenser transmontanus in the lower columbia river
Auteurs : M. A. H. Webb ; G. W. Feist ; M. S. Fitzpatrick ; E. P. Foster ; C. B. Schreck ; M. Plumlee ; C. Wong ; D. T. GundersenSource :
- Archives of environmental contamination and toxicology : (Print) [ 0090-4341 ] ; 2006.
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Abstract
This study determined the partitioning of total mercury in liver, gonad, and cheek muscle of white sturgeon (Acipenser transmonatus) in the lower Columbia River. The relationship between tissue mercury concentrations and various physiologic parameters was assessed. White sturgeon were captured in commercial fisheries in the estuary and Bonneville, The Dalles, and John Day Reservoirs. Condition factor (CF), relative weight (Wr), and gonadosomatic index (GSI) were determined for each fish (n = 57). Gonadal tissue was examined histologically to determine sex and stage of maturity. Liver (n = 49), gonad (n = 49), and cheek muscle (n = 57) were analyzed for total mercury using cold-vapor atomic fluorescence spectrophotometry. Tissue protein concentrations were measured by ultraviolet-visible spectroscopy. Plasma was analyzed for testosterone (T), 11-ketotestosterone (KT), and 17B-estradiol (E2) using radioimmunoassay. Mean tissue mercury concentrations were higher in muscle compared with liver and gonad at all sampling locations, except Bonneville Reservoir where mean liver mercury content was the highest tissue concentration observed in the study. Significant negative correlations between plasma androgens (T and KT) and muscle mercury content and plasma E2 and liver mercury content were found. A significant positive linear relationship between white sturgeon age and liver mercury concentrations was evident. Significant negative correlations between CF and relative weight and gonad and liver mercury content were found. In addition, immature male sturgeon with increased gonad mercury content had decreased GSIs. These results suggest that mercury, in the form of methylmercury, may have an effect on the reproductive potential of white sturgeon.
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Format Inist (serveur)
| NO : | PASCAL 06-0317795 INIST |
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| ET : | Mercury concentrations in gonad, liver, and muscle of white sturgeon Acipenser transmontanus in the lower columbia river |
| AU : | WEBB (M. A. H.); FEIST (G. W.); FITZPATRICK (M. S.); FOSTER (E. P.); SCHRECK (C. B.); PLUMLEE (M.); WONG (C.); GUNDERSEN (D. T.) |
| AF : | Department of Fisheries and Wildlife, Oregon State University, 104 Nash Hall/Corvallis, Oregon 97331/Etats-Unis (1 aut., 2 aut.); Water Quality Division, Oregon Department of Environmental Quality, 811 SW 6th Ave/Portland, Oregon 97204/Etats-Unis (3 aut., 4 aut.); Oregon Cooperative Fish and Wildlife Research Unit, Biological Resources Division, US Geological Survey, Department of Fisheries and Wildlife, Oregon State University/Corvallis, Oregon 97331/Etats-Unis (5 aut.); Department of Environmental Science, Pacific University, 2043 College Way/Forest Grove, Oregon 97116/Etats-Unis (6 aut., 7 aut., 8 aut.) |
| DT : | Publication en série; Niveau analytique |
| SO : | Archives of environmental contamination and toxicology : (Print); ISSN 0090-4341; Coden AECTCV; Etats-Unis; Da. 2006; Vol. 50; No. 3; Pp. 443-451; Bibl. 1 p.1/4 |
| LA : | Anglais |
| EA : | This study determined the partitioning of total mercury in liver, gonad, and cheek muscle of white sturgeon (Acipenser transmonatus) in the lower Columbia River. The relationship between tissue mercury concentrations and various physiologic parameters was assessed. White sturgeon were captured in commercial fisheries in the estuary and Bonneville, The Dalles, and John Day Reservoirs. Condition factor (CF), relative weight (Wr), and gonadosomatic index (GSI) were determined for each fish (n = 57). Gonadal tissue was examined histologically to determine sex and stage of maturity. Liver (n = 49), gonad (n = 49), and cheek muscle (n = 57) were analyzed for total mercury using cold-vapor atomic fluorescence spectrophotometry. Tissue protein concentrations were measured by ultraviolet-visible spectroscopy. Plasma was analyzed for testosterone (T), 11-ketotestosterone (KT), and 17B-estradiol (E2) using radioimmunoassay. Mean tissue mercury concentrations were higher in muscle compared with liver and gonad at all sampling locations, except Bonneville Reservoir where mean liver mercury content was the highest tissue concentration observed in the study. Significant negative correlations between plasma androgens (T and KT) and muscle mercury content and plasma E2 and liver mercury content were found. A significant positive linear relationship between white sturgeon age and liver mercury concentrations was evident. Significant negative correlations between CF and relative weight and gonad and liver mercury content were found. In addition, immature male sturgeon with increased gonad mercury content had decreased GSIs. These results suggest that mercury, in the form of methylmercury, may have an effect on the reproductive potential of white sturgeon. |
| CC : | 002A14D05A; 002A15B |
| FD : | Mercure; Mesure concentration; Gonade; Foie; Muscle; Pollution; Ecotoxicologie; Environnement; Milieu eau douce; Acipenser transmontanus; Rivière Columbia |
| FG : | Métal lourd; Milieu aquatique; Pisces; Vertebrata; Acipenseridae |
| ED : | Mercury; Concentration measurement; Gonad; Liver; Muscle; Pollution; Ecotoxicology; Environment; Freshwater environment; Acipenser transmontanus; Columbia River |
| EG : | Heavy metal; Aquatic environment; Pisces; Vertebrata |
| SD : | Mercurio; Medición concentración; Gónada; Hígado; Músculo; Polución; Ecotoxicología; Medio ambiente; Medio agua dulce; Acipenser transmontanus; Río Columbia |
| LO : | INIST-15790.354000115580210170 |
| ID : | 06-0317795 |
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Webb</name><affiliation><inist:fA14 i1="01"><s1>Department of Fisheries and Wildlife, Oregon State University, 104 Nash Hall</s1><s2>Corvallis, Oregon 97331</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Feist, G W" sort="Feist, G W" uniqKey="Feist G" first="G. W." last="Feist">G. W. Feist</name><affiliation><inist:fA14 i1="01"><s1>Department of Fisheries and Wildlife, Oregon State University, 104 Nash Hall</s1><s2>Corvallis, Oregon 97331</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Fitzpatrick, M S" sort="Fitzpatrick, M S" uniqKey="Fitzpatrick M" first="M. S." last="Fitzpatrick">M. S. Fitzpatrick</name><affiliation><inist:fA14 i1="02"><s1>Water Quality Division, Oregon Department of Environmental Quality, 811 SW 6th Ave</s1><s2>Portland, Oregon 97204</s2><s3>USA</s3><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Foster, E P" sort="Foster, E P" uniqKey="Foster E" first="E. P." last="Foster">E. P. Foster</name><affiliation><inist:fA14 i1="02"><s1>Water Quality Division, Oregon Department of Environmental Quality, 811 SW 6th Ave</s1><s2>Portland, Oregon 97204</s2><s3>USA</s3><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Schreck, C B" sort="Schreck, C B" uniqKey="Schreck C" first="C. B." last="Schreck">C. B. Schreck</name><affiliation><inist:fA14 i1="03"><s1>Oregon Cooperative Fish and Wildlife Research Unit, Biological Resources Division, US Geological Survey, Department of Fisheries and Wildlife, Oregon State University</s1><s2>Corvallis, Oregon 97331</s2><s3>USA</s3><sZ>5 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Plumlee, M" sort="Plumlee, M" uniqKey="Plumlee M" first="M." last="Plumlee">M. Plumlee</name><affiliation><inist:fA14 i1="04"><s1>Department of Environmental Science, Pacific University, 2043 College Way</s1><s2>Forest Grove, Oregon 97116</s2><s3>USA</s3><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>8 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Wong, C" sort="Wong, C" uniqKey="Wong C" first="C." last="Wong">C. Wong</name><affiliation><inist:fA14 i1="04"><s1>Department of Environmental Science, Pacific University, 2043 College Way</s1><s2>Forest Grove, Oregon 97116</s2><s3>USA</s3><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>8 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Gundersen, D T" sort="Gundersen, D T" uniqKey="Gundersen D" first="D. T." last="Gundersen">D. T. Gundersen</name><affiliation><inist:fA14 i1="04"><s1>Department of Environmental Science, Pacific University, 2043 College Way</s1><s2>Forest Grove, Oregon 97116</s2><s3>USA</s3><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>8 aut.</sZ></inist:fA14></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="2006">2006</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>Acipenser transmontanus</term><term>Columbia River</term><term>Concentration measurement</term><term>Ecotoxicology</term><term>Environment</term><term>Freshwater environment</term><term>Gonad</term><term>Liver</term><term>Mercury</term><term>Muscle</term><term>Pollution</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Mercure</term><term>Mesure concentration</term><term>Gonade</term><term>Foie</term><term>Muscle</term><term>Pollution</term><term>Ecotoxicologie</term><term>Environnement</term><term>Milieu eau douce</term><term>Acipenser transmontanus</term><term>Rivière Columbia</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">This study determined the partitioning of total mercury in liver, gonad, and cheek muscle of white sturgeon (Acipenser transmonatus) in the lower Columbia River. The relationship between tissue mercury concentrations and various physiologic parameters was assessed. White sturgeon were captured in commercial fisheries in the estuary and Bonneville, The Dalles, and John Day Reservoirs. Condition factor (CF), relative weight (W<sub>r</sub>), and gonadosomatic index (GSI) were determined for each fish (n = 57). Gonadal tissue was examined histologically to determine sex and stage of maturity. Liver (n = 49), gonad (n = 49), and cheek muscle (n = 57) were analyzed for total mercury using cold-vapor atomic fluorescence spectrophotometry. Tissue protein concentrations were measured by ultraviolet-visible spectroscopy. Plasma was analyzed for testosterone (T), 11-ketotestosterone (KT), and 17B-estradiol (E2) using radioimmunoassay. Mean tissue mercury concentrations were higher in muscle compared with liver and gonad at all sampling locations, except Bonneville Reservoir where mean liver mercury content was the highest tissue concentration observed in the study. Significant negative correlations between plasma androgens (T and KT) and muscle mercury content and plasma E2 and liver mercury content were found. A significant positive linear relationship between white sturgeon age and liver mercury concentrations was evident. Significant negative correlations between CF and relative weight and gonad and liver mercury content were found. In addition, immature male sturgeon with increased gonad mercury content had decreased GSIs. These results suggest that mercury, in the form of methylmercury, may have an effect on the reproductive potential of white sturgeon.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0090-4341</s0></fA01><fA02 i1="01"><s0>AECTCV</s0></fA02><fA03 i2="1"><s0>Arch. environ. contam. toxicol. : (Print)</s0></fA03><fA05><s2>50</s2></fA05><fA06><s2>3</s2></fA06><fA08 i1="01" i2="1" l="ENG"><s1>Mercury concentrations in gonad, liver, and muscle of white sturgeon Acipenser transmontanus in the lower columbia river</s1></fA08><fA11 i1="01" i2="1"><s1>WEBB (M. A. H.)</s1></fA11><fA11 i1="02" i2="1"><s1>FEIST (G. W.)</s1></fA11><fA11 i1="03" i2="1"><s1>FITZPATRICK (M. S.)</s1></fA11><fA11 i1="04" i2="1"><s1>FOSTER (E. P.)</s1></fA11><fA11 i1="05" i2="1"><s1>SCHRECK (C. B.)</s1></fA11><fA11 i1="06" i2="1"><s1>PLUMLEE (M.)</s1></fA11><fA11 i1="07" i2="1"><s1>WONG (C.)</s1></fA11><fA11 i1="08" i2="1"><s1>GUNDERSEN (D. T.)</s1></fA11><fA14 i1="01"><s1>Department of Fisheries and Wildlife, Oregon State University, 104 Nash Hall</s1><s2>Corvallis, Oregon 97331</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></fA14><fA14 i1="02"><s1>Water Quality Division, Oregon Department of Environmental Quality, 811 SW 6th Ave</s1><s2>Portland, Oregon 97204</s2><s3>USA</s3><sZ>3 aut.</sZ><sZ>4 aut.</sZ></fA14><fA14 i1="03"><s1>Oregon Cooperative Fish and Wildlife Research Unit, Biological Resources Division, US Geological Survey, Department of Fisheries and Wildlife, Oregon State University</s1><s2>Corvallis, Oregon 97331</s2><s3>USA</s3><sZ>5 aut.</sZ></fA14><fA14 i1="04"><s1>Department of Environmental Science, Pacific University, 2043 College Way</s1><s2>Forest Grove, Oregon 97116</s2><s3>USA</s3><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>8 aut.</sZ></fA14><fA20><s1>443-451</s1></fA20><fA21><s1>2006</s1></fA21><fA23 i1="01"><s0>ENG</s0></fA23><fA43 i1="01"><s1>INIST</s1><s2>15790</s2><s5>354000115580210170</s5></fA43><fA44><s0>0000</s0><s1>© 2006 INIST-CNRS. All rights reserved.</s1></fA44><fA45><s0>1 p.1/4</s0></fA45><fA47 i1="01" i2="1"><s0>06-0317795</s0></fA47><fA60><s1>P</s1></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="1"><s0>Archives of environmental contamination and toxicology : (Print)</s0></fA64><fA66 i1="01"><s0>USA</s0></fA66><fC01 i1="01" l="ENG"><s0>This study determined the partitioning of total mercury in liver, gonad, and cheek muscle of white sturgeon (Acipenser transmonatus) in the lower Columbia River. The relationship between tissue mercury concentrations and various physiologic parameters was assessed. White sturgeon were captured in commercial fisheries in the estuary and Bonneville, The Dalles, and John Day Reservoirs. Condition factor (CF), relative weight (W<sub>r</sub>), and gonadosomatic index (GSI) were determined for each fish (n = 57). Gonadal tissue was examined histologically to determine sex and stage of maturity. Liver (n = 49), gonad (n = 49), and cheek muscle (n = 57) were analyzed for total mercury using cold-vapor atomic fluorescence spectrophotometry. Tissue protein concentrations were measured by ultraviolet-visible spectroscopy. Plasma was analyzed for testosterone (T), 11-ketotestosterone (KT), and 17B-estradiol (E2) using radioimmunoassay. Mean tissue mercury concentrations were higher in muscle compared with liver and gonad at all sampling locations, except Bonneville Reservoir where mean liver mercury content was the highest tissue concentration observed in the study. Significant negative correlations between plasma androgens (T and KT) and muscle mercury content and plasma E2 and liver mercury content were found. A significant positive linear relationship between white sturgeon age and liver mercury concentrations was evident. Significant negative correlations between CF and relative weight and gonad and liver mercury content were found. In addition, immature male sturgeon with increased gonad mercury content had decreased GSIs. These results suggest that mercury, in the form of methylmercury, may have an effect on the reproductive potential of white sturgeon.</s0></fC01><fC02 i1="01" i2="X"><s0>002A14D05A</s0></fC02><fC02 i1="02" i2="X"><s0>002A15B</s0></fC02><fC03 i1="01" i2="X" l="FRE"><s0>Mercure</s0><s2>NC</s2><s2>FX</s2><s5>01</s5></fC03><fC03 i1="01" i2="X" l="ENG"><s0>Mercury</s0><s2>NC</s2><s2>FX</s2><s5>01</s5></fC03><fC03 i1="01" i2="X" l="SPA"><s0>Mercurio</s0><s2>NC</s2><s2>FX</s2><s5>01</s5></fC03><fC03 i1="02" i2="X" l="FRE"><s0>Mesure concentration</s0><s5>02</s5></fC03><fC03 i1="02" i2="X" l="ENG"><s0>Concentration measurement</s0><s5>02</s5></fC03><fC03 i1="02" i2="X" l="SPA"><s0>Medición concentración</s0><s5>02</s5></fC03><fC03 i1="03" i2="X" l="FRE"><s0>Gonade</s0><s5>03</s5></fC03><fC03 i1="03" i2="X" l="ENG"><s0>Gonad</s0><s5>03</s5></fC03><fC03 i1="03" i2="X" l="SPA"><s0>Gónada</s0><s5>03</s5></fC03><fC03 i1="04" i2="X" l="FRE"><s0>Foie</s0><s5>04</s5></fC03><fC03 i1="04" i2="X" l="ENG"><s0>Liver</s0><s5>04</s5></fC03><fC03 i1="04" i2="X" l="SPA"><s0>Hígado</s0><s5>04</s5></fC03><fC03 i1="05" i2="X" l="FRE"><s0>Muscle</s0><s5>05</s5></fC03><fC03 i1="05" i2="X" l="ENG"><s0>Muscle</s0><s5>05</s5></fC03><fC03 i1="05" i2="X" l="SPA"><s0>Músculo</s0><s5>05</s5></fC03><fC03 i1="06" i2="X" l="FRE"><s0>Pollution</s0><s5>06</s5></fC03><fC03 i1="06" i2="X" l="ENG"><s0>Pollution</s0><s5>06</s5></fC03><fC03 i1="06" i2="X" l="SPA"><s0>Polución</s0><s5>06</s5></fC03><fC03 i1="07" i2="X" l="FRE"><s0>Ecotoxicologie</s0><s5>07</s5></fC03><fC03 i1="07" i2="X" l="ENG"><s0>Ecotoxicology</s0><s5>07</s5></fC03><fC03 i1="07" i2="X" l="SPA"><s0>Ecotoxicología</s0><s5>07</s5></fC03><fC03 i1="08" i2="X" l="FRE"><s0>Environnement</s0><s5>08</s5></fC03><fC03 i1="08" i2="X" l="ENG"><s0>Environment</s0><s5>08</s5></fC03><fC03 i1="08" i2="X" l="SPA"><s0>Medio ambiente</s0><s5>08</s5></fC03><fC03 i1="09" i2="X" l="FRE"><s0>Milieu eau douce</s0><s5>23</s5></fC03><fC03 i1="09" i2="X" l="ENG"><s0>Freshwater environment</s0><s5>23</s5></fC03><fC03 i1="09" i2="X" l="SPA"><s0>Medio agua dulce</s0><s5>23</s5></fC03><fC03 i1="10" i2="X" l="FRE"><s0>Acipenser transmontanus</s0><s2>NS</s2><s5>49</s5></fC03><fC03 i1="10" i2="X" l="ENG"><s0>Acipenser transmontanus</s0><s2>NS</s2><s5>49</s5></fC03><fC03 i1="10" i2="X" l="SPA"><s0>Acipenser transmontanus</s0><s2>NS</s2><s5>49</s5></fC03><fC03 i1="11" i2="X" l="FRE"><s0>Rivière Columbia</s0><s4>CD</s4><s5>96</s5></fC03><fC03 i1="11" i2="X" l="ENG"><s0>Columbia River</s0><s4>CD</s4><s5>96</s5></fC03><fC03 i1="11" i2="X" l="SPA"><s0>Río Columbia</s0><s4>CD</s4><s5>96</s5></fC03><fC07 i1="01" i2="X" l="FRE"><s0>Métal lourd</s0><s5>17</s5></fC07><fC07 i1="01" i2="X" l="ENG"><s0>Heavy metal</s0><s5>17</s5></fC07><fC07 i1="01" i2="X" l="SPA"><s0>Metal pesado</s0><s5>17</s5></fC07><fC07 i1="02" i2="X" l="FRE"><s0>Milieu aquatique</s0><s5>18</s5></fC07><fC07 i1="02" i2="X" l="ENG"><s0>Aquatic environment</s0><s5>18</s5></fC07><fC07 i1="02" i2="X" l="SPA"><s0>Medio acuático</s0><s5>18</s5></fC07><fC07 i1="03" i2="X" l="FRE"><s0>Pisces</s0><s2>NS</s2><s5>29</s5></fC07><fC07 i1="03" i2="X" l="ENG"><s0>Pisces</s0><s2>NS</s2><s5>29</s5></fC07><fC07 i1="03" i2="X" l="SPA"><s0>Pisces</s0><s2>NS</s2><s5>29</s5></fC07><fC07 i1="04" i2="X" l="FRE"><s0>Vertebrata</s0><s2>NS</s2></fC07><fC07 i1="04" i2="X" l="ENG"><s0>Vertebrata</s0><s2>NS</s2></fC07><fC07 i1="04" i2="X" l="SPA"><s0>Vertebrata</s0><s2>NS</s2></fC07><fC07 i1="05" i2="X" l="FRE"><s0>Acipenseridae</s0><s4>INC</s4><s5>70</s5></fC07><fN21><s1>205</s1></fN21><fN44 i1="01"><s1>OTO</s1></fN44><fN82><s1>OTO</s1></fN82></pA></standard><server><NO>PASCAL 06-0317795 INIST</NO><ET>Mercury concentrations in gonad, liver, and muscle of white sturgeon Acipenser transmontanus in the lower columbia river</ET><AU>WEBB (M. A. H.); FEIST (G. W.); FITZPATRICK (M. S.); FOSTER (E. P.); SCHRECK (C. B.); PLUMLEE (M.); WONG (C.); GUNDERSEN (D. T.)</AU><AF>Department of Fisheries and Wildlife, Oregon State University, 104 Nash Hall/Corvallis, Oregon 97331/Etats-Unis (1 aut., 2 aut.); Water Quality Division, Oregon Department of Environmental Quality, 811 SW 6th Ave/Portland, Oregon 97204/Etats-Unis (3 aut., 4 aut.); Oregon Cooperative Fish and Wildlife Research Unit, Biological Resources Division, US Geological Survey, Department of Fisheries and Wildlife, Oregon State University/Corvallis, Oregon 97331/Etats-Unis (5 aut.); Department of Environmental Science, Pacific University, 2043 College Way/Forest Grove, Oregon 97116/Etats-Unis (6 aut., 7 aut., 8 aut.)</AF><DT>Publication en série; Niveau analytique</DT><SO>Archives of environmental contamination and toxicology : (Print); ISSN 0090-4341; Coden AECTCV; Etats-Unis; Da. 2006; Vol. 50; No. 3; Pp. 443-451; Bibl. 1 p.1/4</SO><LA>Anglais</LA><EA>This study determined the partitioning of total mercury in liver, gonad, and cheek muscle of white sturgeon (Acipenser transmonatus) in the lower Columbia River. The relationship between tissue mercury concentrations and various physiologic parameters was assessed. White sturgeon were captured in commercial fisheries in the estuary and Bonneville, The Dalles, and John Day Reservoirs. Condition factor (CF), relative weight (W<sub>r</sub>), and gonadosomatic index (GSI) were determined for each fish (n = 57). Gonadal tissue was examined histologically to determine sex and stage of maturity. Liver (n = 49), gonad (n = 49), and cheek muscle (n = 57) were analyzed for total mercury using cold-vapor atomic fluorescence spectrophotometry. Tissue protein concentrations were measured by ultraviolet-visible spectroscopy. Plasma was analyzed for testosterone (T), 11-ketotestosterone (KT), and 17B-estradiol (E2) using radioimmunoassay. Mean tissue mercury concentrations were higher in muscle compared with liver and gonad at all sampling locations, except Bonneville Reservoir where mean liver mercury content was the highest tissue concentration observed in the study. Significant negative correlations between plasma androgens (T and KT) and muscle mercury content and plasma E2 and liver mercury content were found. A significant positive linear relationship between white sturgeon age and liver mercury concentrations was evident. Significant negative correlations between CF and relative weight and gonad and liver mercury content were found. In addition, immature male sturgeon with increased gonad mercury content had decreased GSIs. These results suggest that mercury, in the form of methylmercury, may have an effect on the reproductive potential of white sturgeon.</EA><CC>002A14D05A; 002A15B</CC><FD>Mercure; Mesure concentration; Gonade; Foie; Muscle; Pollution; Ecotoxicologie; Environnement; Milieu eau douce; Acipenser transmontanus; Rivière Columbia</FD><FG>Métal lourd; Milieu aquatique; Pisces; Vertebrata; Acipenseridae</FG><ED>Mercury; Concentration measurement; Gonad; Liver; Muscle; Pollution; Ecotoxicology; Environment; Freshwater environment; Acipenser transmontanus; Columbia River</ED><EG>Heavy metal; Aquatic environment; Pisces; Vertebrata</EG><SD>Mercurio; Medición concentración; Gónada; Hígado; Músculo; Polución; Ecotoxicología; Medio ambiente; Medio agua dulce; Acipenser transmontanus; Río Columbia</SD><LO>INIST-15790.354000115580210170</LO><ID>06-0317795</ID></server></inist></record>Pour manipuler ce document sous Unix (Dilib)
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