Stock Origins of Subadult and Adult Atlantic Sturgeon, Acipenser oxyrinchus, in a Non-natal Estuary, Long Island Sound
Identifieur interne : 000007 ( PascalFrancis/Corpus ); précédent : 000006; suivant : 000008Stock Origins of Subadult and Adult Atlantic Sturgeon, Acipenser oxyrinchus, in a Non-natal Estuary, Long Island Sound
Auteurs : John R. Waldman ; Tim King ; Tom Savoy ; Lorraine Maceda ; Cheryl Grunwald ; Isaac WirginSource :
- Estuaries and coasts [ 1559-2723 ] ; 2013.
Descripteurs français
- Pascal (Inist)
English descriptors
Abstract
The anadromous acipenserid Atlantic sturgeon Acipenser oxyrinchus was listed in 2012 under the U.S. Endangered Species Act as having four endangered and one threatened distinct population segment (DPS) in American waters. Anthropogenic activities outside of natal estuaries, particularly bycatch, may hinder the abilities of some populations to rebuild. Most Atlantic sturgeon are residential for their first 2-6 years within their natal estuaries, whereas older subadults and adults may migrate to non-natal estuaries and coastal locations. Previous studies demonstrated that subadults and adults aggregate during summer at locations in Long Island Sound (LIS) and its tributary, the Connecticut River; however, the population origin of these fish is unknown. Because of its geographic proximity and relatively robust population, we hypothesized that the LIS and Connecticut River aggregations were almost solely derived from the Hudson River. We used microsatellite nuclear DNA analysis at 11 loci and mitochondrial DNA control region sequence analyses to estimate the relative contributions of nine Atlantic sturgeon populations and the five DPS to these aggregations using individual-based assignment tests and mixed-stock analysis. From 64 to 73 % of specimens from LIS were estimated to be of Hudson origin. Similarly, 66-76 % of specimens from the Connecticut River were of Hudson origin. However, moderate numbers of specimens were detected from distant spawning populations in the southeastern DPS and from two populations once thought to be extirpated or nearly so, the James River (6-7.3 %), and the Delaware River (7.6-12 %). Additionally, specimens were detected from all five DPS in both the LIS and Connecticut River collections. These results highlight the difficulty of evaluating the status of individual Atlantic sturgeon populations because of the propensity of subadults and adults to migrate for extended duration to distant sites where they may be vulnerable to anthropogenic disturbances.
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Format Inist (serveur)
| NO : | PASCAL 14-0245412 INIST |
|---|---|
| ET : | Stock Origins of Subadult and Adult Atlantic Sturgeon, Acipenser oxyrinchus, in a Non-natal Estuary, Long Island Sound |
| AU : | WALDMAN (John R.); KING (Tim); SAVOY (Tom); MACEDA (Lorraine); GRUNWALD (Cheryl); WIRGIN (Isaac) |
| AF : | Biology Department, Queens College of the City University of New York, 65-30 Kissena Boulevard/Flushing, NY 11367-1597/Etats-Unis (1 aut.); U.S. Geological Survey, Leetown Science Center, 11649 Leetown Road/Kearneysville, WV 25430/Etats-Unis (2 aut.); Connecticut Department of Environmental Protection, Marine Fisheries Division, 333 Ferry Road/Old Lyme, CT 06371/Etats-Unis (3 aut.); Department of Environmental Medicine, NYU School of Medicine, 57 Old Forge Road/Tuxedo, NY 10987/Etats-Unis (4 aut., 5 aut., 6 aut.) |
| DT : | Publication en série; Niveau analytique |
| SO : | Estuaries and coasts; ISSN 1559-2723; Allemagne; Da. 2013; Vol. 36; No. 2; Pp. 257-267; Bibl. 1 p. |
| LA : | Anglais |
| EA : | The anadromous acipenserid Atlantic sturgeon Acipenser oxyrinchus was listed in 2012 under the U.S. Endangered Species Act as having four endangered and one threatened distinct population segment (DPS) in American waters. Anthropogenic activities outside of natal estuaries, particularly bycatch, may hinder the abilities of some populations to rebuild. Most Atlantic sturgeon are residential for their first 2-6 years within their natal estuaries, whereas older subadults and adults may migrate to non-natal estuaries and coastal locations. Previous studies demonstrated that subadults and adults aggregate during summer at locations in Long Island Sound (LIS) and its tributary, the Connecticut River; however, the population origin of these fish is unknown. Because of its geographic proximity and relatively robust population, we hypothesized that the LIS and Connecticut River aggregations were almost solely derived from the Hudson River. We used microsatellite nuclear DNA analysis at 11 loci and mitochondrial DNA control region sequence analyses to estimate the relative contributions of nine Atlantic sturgeon populations and the five DPS to these aggregations using individual-based assignment tests and mixed-stock analysis. From 64 to 73 % of specimens from LIS were estimated to be of Hudson origin. Similarly, 66-76 % of specimens from the Connecticut River were of Hudson origin. However, moderate numbers of specimens were detected from distant spawning populations in the southeastern DPS and from two populations once thought to be extirpated or nearly so, the James River (6-7.3 %), and the Delaware River (7.6-12 %). Additionally, specimens were detected from all five DPS in both the LIS and Connecticut River collections. These results highlight the difficulty of evaluating the status of individual Atlantic sturgeon populations because of the propensity of subadults and adults to migrate for extended duration to distant sites where they may be vulnerable to anthropogenic disturbances. |
| CC : | 002A14B04D; 002A15B |
| FD : | Acipenser sturio; Lieu naissance; Estuaire; Détroit Long Island; Milieu saumâtre |
| FG : | Pisces; Vertebrata; Océan Atlantique Nord; Océan Atlantique; Acipenseridae |
| ED : | Acipenser sturio; Birth place; Estuaries; Long Island Sound; Brackish water environment |
| EG : | Pisces; Vertebrata; North Atlantic; Atlantic Ocean |
| SD : | Acipenser sturio; Lugar nacimiento; Estuario; Estrecho Long Island; Medio salobre |
| LO : | INIST-8918.354000506517520030 |
| ID : | 14-0245412 |
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Waldman</name><affiliation><inist:fA14 i1="01"><s1>Biology Department, Queens College of the City University of New York, 65-30 Kissena Boulevard</s1><s2>Flushing, NY 11367-1597</s2><s3>USA</s3><sZ>1 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="King, Tim" sort="King, Tim" uniqKey="King T" first="Tim" last="King">Tim King</name><affiliation><inist:fA14 i1="02"><s1>U.S. Geological Survey, Leetown Science Center, 11649 Leetown Road</s1><s2>Kearneysville, WV 25430</s2><s3>USA</s3><sZ>2 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Savoy, Tom" sort="Savoy, Tom" uniqKey="Savoy T" first="Tom" last="Savoy">Tom Savoy</name><affiliation><inist:fA14 i1="03"><s1>Connecticut Department of Environmental Protection, Marine Fisheries Division, 333 Ferry Road</s1><s2>Old Lyme, CT 06371</s2><s3>USA</s3><sZ>3 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Maceda, Lorraine" sort="Maceda, Lorraine" uniqKey="Maceda L" first="Lorraine" last="Maceda">Lorraine Maceda</name><affiliation><inist:fA14 i1="04"><s1>Department of Environmental Medicine, NYU School of Medicine, 57 Old Forge Road</s1><s2>Tuxedo, NY 10987</s2><s3>USA</s3><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Grunwald, Cheryl" sort="Grunwald, Cheryl" uniqKey="Grunwald C" first="Cheryl" last="Grunwald">Cheryl Grunwald</name><affiliation><inist:fA14 i1="04"><s1>Department of Environmental Medicine, NYU School of Medicine, 57 Old Forge Road</s1><s2>Tuxedo, NY 10987</s2><s3>USA</s3><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Wirgin, Isaac" sort="Wirgin, Isaac" uniqKey="Wirgin I" first="Isaac" last="Wirgin">Isaac Wirgin</name><affiliation><inist:fA14 i1="04"><s1>Department of Environmental Medicine, NYU School of Medicine, 57 Old Forge Road</s1><s2>Tuxedo, NY 10987</s2><s3>USA</s3><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">14-0245412</idno><date when="2013">2013</date><idno type="stanalyst">PASCAL 14-0245412 INIST</idno><idno type="RBID">Pascal:14-0245412</idno><idno type="wicri:Area/PascalFrancis/Corpus">000007</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Stock Origins of Subadult and Adult Atlantic Sturgeon, Acipenser oxyrinchus, in a Non-natal Estuary, Long Island Sound</title><author><name sortKey="Waldman, John R" sort="Waldman, John R" uniqKey="Waldman J" first="John R." last="Waldman">John R. Waldman</name><affiliation><inist:fA14 i1="01"><s1>Biology Department, Queens College of the City University of New York, 65-30 Kissena Boulevard</s1><s2>Flushing, NY 11367-1597</s2><s3>USA</s3><sZ>1 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="King, Tim" sort="King, Tim" uniqKey="King T" first="Tim" last="King">Tim King</name><affiliation><inist:fA14 i1="02"><s1>U.S. Geological Survey, Leetown Science Center, 11649 Leetown Road</s1><s2>Kearneysville, WV 25430</s2><s3>USA</s3><sZ>2 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Savoy, Tom" sort="Savoy, Tom" uniqKey="Savoy T" first="Tom" last="Savoy">Tom Savoy</name><affiliation><inist:fA14 i1="03"><s1>Connecticut Department of Environmental Protection, Marine Fisheries Division, 333 Ferry Road</s1><s2>Old Lyme, CT 06371</s2><s3>USA</s3><sZ>3 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Maceda, Lorraine" sort="Maceda, Lorraine" uniqKey="Maceda L" first="Lorraine" last="Maceda">Lorraine Maceda</name><affiliation><inist:fA14 i1="04"><s1>Department of Environmental Medicine, NYU School of Medicine, 57 Old Forge Road</s1><s2>Tuxedo, NY 10987</s2><s3>USA</s3><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Grunwald, Cheryl" sort="Grunwald, Cheryl" uniqKey="Grunwald C" first="Cheryl" last="Grunwald">Cheryl Grunwald</name><affiliation><inist:fA14 i1="04"><s1>Department of Environmental Medicine, NYU School of Medicine, 57 Old Forge Road</s1><s2>Tuxedo, NY 10987</s2><s3>USA</s3><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Wirgin, Isaac" sort="Wirgin, Isaac" uniqKey="Wirgin I" first="Isaac" last="Wirgin">Isaac Wirgin</name><affiliation><inist:fA14 i1="04"><s1>Department of Environmental Medicine, NYU School of Medicine, 57 Old Forge Road</s1><s2>Tuxedo, NY 10987</s2><s3>USA</s3><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14></affiliation></author></analytic><series><title level="j" type="main">Estuaries and coasts</title><idno type="ISSN">1559-2723</idno><imprint><date when="2013">2013</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Estuaries and coasts</title><idno type="ISSN">1559-2723</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Acipenser sturio</term><term>Birth place</term><term>Brackish water environment</term><term>Estuaries</term><term>Long Island Sound</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Acipenser sturio</term><term>Lieu naissance</term><term>Estuaire</term><term>Détroit Long Island</term><term>Milieu saumâtre</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The anadromous acipenserid Atlantic sturgeon Acipenser oxyrinchus was listed in 2012 under the U.S. Endangered Species Act as having four endangered and one threatened distinct population segment (DPS) in American waters. Anthropogenic activities outside of natal estuaries, particularly bycatch, may hinder the abilities of some populations to rebuild. Most Atlantic sturgeon are residential for their first 2-6 years within their natal estuaries, whereas older subadults and adults may migrate to non-natal estuaries and coastal locations. Previous studies demonstrated that subadults and adults aggregate during summer at locations in Long Island Sound (LIS) and its tributary, the Connecticut River; however, the population origin of these fish is unknown. Because of its geographic proximity and relatively robust population, we hypothesized that the LIS and Connecticut River aggregations were almost solely derived from the Hudson River. We used microsatellite nuclear DNA analysis at 11 loci and mitochondrial DNA control region sequence analyses to estimate the relative contributions of nine Atlantic sturgeon populations and the five DPS to these aggregations using individual-based assignment tests and mixed-stock analysis. From 64 to 73 % of specimens from LIS were estimated to be of Hudson origin. Similarly, 66-76 % of specimens from the Connecticut River were of Hudson origin. However, moderate numbers of specimens were detected from distant spawning populations in the southeastern DPS and from two populations once thought to be extirpated or nearly so, the James River (6-7.3 %), and the Delaware River (7.6-12 %). Additionally, specimens were detected from all five DPS in both the LIS and Connecticut River collections. These results highlight the difficulty of evaluating the status of individual Atlantic sturgeon populations because of the propensity of subadults and adults to migrate for extended duration to distant sites where they may be vulnerable to anthropogenic disturbances.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>1559-2723</s0></fA01><fA05><s2>36</s2></fA05><fA06><s2>2</s2></fA06><fA08 i1="01" i2="1" l="ENG"><s1>Stock Origins of Subadult and Adult Atlantic Sturgeon, Acipenser oxyrinchus, in a Non-natal Estuary, Long Island Sound</s1></fA08><fA11 i1="01" i2="1"><s1>WALDMAN (John R.)</s1></fA11><fA11 i1="02" i2="1"><s1>KING (Tim)</s1></fA11><fA11 i1="03" i2="1"><s1>SAVOY (Tom)</s1></fA11><fA11 i1="04" i2="1"><s1>MACEDA (Lorraine)</s1></fA11><fA11 i1="05" i2="1"><s1>GRUNWALD (Cheryl)</s1></fA11><fA11 i1="06" i2="1"><s1>WIRGIN (Isaac)</s1></fA11><fA14 i1="01"><s1>Biology Department, Queens College of the City University of New York, 65-30 Kissena Boulevard</s1><s2>Flushing, NY 11367-1597</s2><s3>USA</s3><sZ>1 aut.</sZ></fA14><fA14 i1="02"><s1>U.S. Geological Survey, Leetown Science Center, 11649 Leetown Road</s1><s2>Kearneysville, WV 25430</s2><s3>USA</s3><sZ>2 aut.</sZ></fA14><fA14 i1="03"><s1>Connecticut Department of Environmental Protection, Marine Fisheries Division, 333 Ferry Road</s1><s2>Old Lyme, CT 06371</s2><s3>USA</s3><sZ>3 aut.</sZ></fA14><fA14 i1="04"><s1>Department of Environmental Medicine, NYU School of Medicine, 57 Old Forge Road</s1><s2>Tuxedo, NY 10987</s2><s3>USA</s3><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></fA14><fA20><s1>257-267</s1></fA20><fA21><s1>2013</s1></fA21><fA23 i1="01"><s0>ENG</s0></fA23><fA43 i1="01"><s1>INIST</s1><s2>8918</s2><s5>354000506517520030</s5></fA43><fA44><s0>0000</s0><s1>© 2014 INIST-CNRS. All rights reserved.</s1></fA44><fA45><s0>1 p.</s0></fA45><fA47 i1="01" i2="1"><s0>14-0245412</s0></fA47><fA60><s1>P</s1></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="2"><s0>Estuaries and coasts</s0></fA64><fA66 i1="01"><s0>DEU</s0></fA66><fC01 i1="01" l="ENG"><s0>The anadromous acipenserid Atlantic sturgeon Acipenser oxyrinchus was listed in 2012 under the U.S. Endangered Species Act as having four endangered and one threatened distinct population segment (DPS) in American waters. Anthropogenic activities outside of natal estuaries, particularly bycatch, may hinder the abilities of some populations to rebuild. Most Atlantic sturgeon are residential for their first 2-6 years within their natal estuaries, whereas older subadults and adults may migrate to non-natal estuaries and coastal locations. Previous studies demonstrated that subadults and adults aggregate during summer at locations in Long Island Sound (LIS) and its tributary, the Connecticut River; however, the population origin of these fish is unknown. Because of its geographic proximity and relatively robust population, we hypothesized that the LIS and Connecticut River aggregations were almost solely derived from the Hudson River. We used microsatellite nuclear DNA analysis at 11 loci and mitochondrial DNA control region sequence analyses to estimate the relative contributions of nine Atlantic sturgeon populations and the five DPS to these aggregations using individual-based assignment tests and mixed-stock analysis. From 64 to 73 % of specimens from LIS were estimated to be of Hudson origin. Similarly, 66-76 % of specimens from the Connecticut River were of Hudson origin. However, moderate numbers of specimens were detected from distant spawning populations in the southeastern DPS and from two populations once thought to be extirpated or nearly so, the James River (6-7.3 %), and the Delaware River (7.6-12 %). Additionally, specimens were detected from all five DPS in both the LIS and Connecticut River collections. These results highlight the difficulty of evaluating the status of individual Atlantic sturgeon populations because of the propensity of subadults and adults to migrate for extended duration to distant sites where they may be vulnerable to anthropogenic disturbances.</s0></fC01><fC02 i1="01" i2="X"><s0>002A14B04D</s0></fC02><fC02 i1="02" i2="X"><s0>002A15B</s0></fC02><fC03 i1="01" i2="X" l="FRE"><s0>Acipenser sturio</s0><s2>NS</s2><s5>03</s5></fC03><fC03 i1="01" i2="X" l="ENG"><s0>Acipenser sturio</s0><s2>NS</s2><s5>03</s5></fC03><fC03 i1="01" i2="X" l="SPA"><s0>Acipenser sturio</s0><s2>NS</s2><s5>03</s5></fC03><fC03 i1="02" i2="X" l="FRE"><s0>Lieu naissance</s0><s5>05</s5></fC03><fC03 i1="02" i2="X" l="ENG"><s0>Birth place</s0><s5>05</s5></fC03><fC03 i1="02" i2="X" l="SPA"><s0>Lugar nacimiento</s0><s5>05</s5></fC03><fC03 i1="03" i2="X" l="FRE"><s0>Estuaire</s0><s5>08</s5></fC03><fC03 i1="03" i2="X" l="ENG"><s0>Estuaries</s0><s5>08</s5></fC03><fC03 i1="03" i2="X" l="SPA"><s0>Estuario</s0><s5>08</s5></fC03><fC03 i1="04" i2="X" l="FRE"><s0>Détroit Long Island</s0><s2>NG</s2><s5>09</s5></fC03><fC03 i1="04" i2="X" l="ENG"><s0>Long Island Sound</s0><s2>NG</s2><s5>09</s5></fC03><fC03 i1="04" i2="X" l="SPA"><s0>Estrecho Long Island</s0><s2>NG</s2><s5>09</s5></fC03><fC03 i1="05" i2="X" l="FRE"><s0>Milieu saumâtre</s0><s5>11</s5></fC03><fC03 i1="05" i2="X" l="ENG"><s0>Brackish water environment</s0><s5>11</s5></fC03><fC03 i1="05" i2="X" l="SPA"><s0>Medio salobre</s0><s5>11</s5></fC03><fC07 i1="01" i2="X" l="FRE"><s0>Pisces</s0><s2>NS</s2></fC07><fC07 i1="01" i2="X" l="ENG"><s0>Pisces</s0><s2>NS</s2></fC07><fC07 i1="01" i2="X" l="SPA"><s0>Pisces</s0><s2>NS</s2></fC07><fC07 i1="02" i2="X" l="FRE"><s0>Vertebrata</s0><s2>NS</s2></fC07><fC07 i1="02" i2="X" l="ENG"><s0>Vertebrata</s0><s2>NS</s2></fC07><fC07 i1="02" i2="X" l="SPA"><s0>Vertebrata</s0><s2>NS</s2></fC07><fC07 i1="03" i2="X" l="FRE"><s0>Océan Atlantique Nord</s0><s2>NG</s2></fC07><fC07 i1="03" i2="X" l="ENG"><s0>North Atlantic</s0><s2>NG</s2></fC07><fC07 i1="03" i2="X" l="SPA"><s0>Océano Atlántico Norte</s0><s2>NG</s2></fC07><fC07 i1="04" i2="X" l="FRE"><s0>Océan Atlantique</s0><s2>NG</s2></fC07><fC07 i1="04" i2="X" l="ENG"><s0>Atlantic Ocean</s0><s2>NG</s2></fC07><fC07 i1="04" i2="X" l="SPA"><s0>Océano Atlántico</s0><s2>NG</s2></fC07><fC07 i1="05" i2="X" l="FRE"><s0>Acipenseridae</s0><s4>INC</s4><s5>86</s5></fC07><fN21><s1>300</s1></fN21></pA></standard><server><NO>PASCAL 14-0245412 INIST</NO><ET>Stock Origins of Subadult and Adult Atlantic Sturgeon, Acipenser oxyrinchus, in a Non-natal Estuary, Long Island Sound</ET><AU>WALDMAN (John R.); KING (Tim); SAVOY (Tom); MACEDA (Lorraine); GRUNWALD (Cheryl); WIRGIN (Isaac)</AU><AF>Biology Department, Queens College of the City University of New York, 65-30 Kissena Boulevard/Flushing, NY 11367-1597/Etats-Unis (1 aut.); U.S. Geological Survey, Leetown Science Center, 11649 Leetown Road/Kearneysville, WV 25430/Etats-Unis (2 aut.); Connecticut Department of Environmental Protection, Marine Fisheries Division, 333 Ferry Road/Old Lyme, CT 06371/Etats-Unis (3 aut.); Department of Environmental Medicine, NYU School of Medicine, 57 Old Forge Road/Tuxedo, NY 10987/Etats-Unis (4 aut., 5 aut., 6 aut.)</AF><DT>Publication en série; Niveau analytique</DT><SO>Estuaries and coasts; ISSN 1559-2723; Allemagne; Da. 2013; Vol. 36; No. 2; Pp. 257-267; Bibl. 1 p.</SO><LA>Anglais</LA><EA>The anadromous acipenserid Atlantic sturgeon Acipenser oxyrinchus was listed in 2012 under the U.S. Endangered Species Act as having four endangered and one threatened distinct population segment (DPS) in American waters. Anthropogenic activities outside of natal estuaries, particularly bycatch, may hinder the abilities of some populations to rebuild. Most Atlantic sturgeon are residential for their first 2-6 years within their natal estuaries, whereas older subadults and adults may migrate to non-natal estuaries and coastal locations. Previous studies demonstrated that subadults and adults aggregate during summer at locations in Long Island Sound (LIS) and its tributary, the Connecticut River; however, the population origin of these fish is unknown. Because of its geographic proximity and relatively robust population, we hypothesized that the LIS and Connecticut River aggregations were almost solely derived from the Hudson River. We used microsatellite nuclear DNA analysis at 11 loci and mitochondrial DNA control region sequence analyses to estimate the relative contributions of nine Atlantic sturgeon populations and the five DPS to these aggregations using individual-based assignment tests and mixed-stock analysis. From 64 to 73 % of specimens from LIS were estimated to be of Hudson origin. Similarly, 66-76 % of specimens from the Connecticut River were of Hudson origin. However, moderate numbers of specimens were detected from distant spawning populations in the southeastern DPS and from two populations once thought to be extirpated or nearly so, the James River (6-7.3 %), and the Delaware River (7.6-12 %). Additionally, specimens were detected from all five DPS in both the LIS and Connecticut River collections. These results highlight the difficulty of evaluating the status of individual Atlantic sturgeon populations because of the propensity of subadults and adults to migrate for extended duration to distant sites where they may be vulnerable to anthropogenic disturbances.</EA><CC>002A14B04D; 002A15B</CC><FD>Acipenser sturio; Lieu naissance; Estuaire; Détroit Long Island; Milieu saumâtre</FD><FG>Pisces; Vertebrata; Océan Atlantique Nord; Océan Atlantique; Acipenseridae</FG><ED>Acipenser sturio; Birth place; Estuaries; Long Island Sound; Brackish water environment</ED><EG>Pisces; Vertebrata; North Atlantic; Atlantic Ocean</EG><SD>Acipenser sturio; Lugar nacimiento; Estuario; Estrecho Long Island; Medio salobre</SD><LO>INIST-8918.354000506517520030</LO><ID>14-0245412</ID></server></inist></record>Pour manipuler ce document sous Unix (Dilib)
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