EsturgeonV1, PascalFrancis, Curation, bibRecord, 000032

Morphological and genetic variation among Shortnose sturgeon Acipenser brevirostrum from adjacent and distant Rivers

Identifieur interne : 000032 ( PascalFrancis/Curation ); précédent : 000031; suivant : 000033

Morphological and genetic variation among Shortnose sturgeon Acipenser brevirostrum from adjacent and distant Rivers

Auteurs : Maureen G. Walsh [États-Unis] ; Mark B. Bain [États-Unis] ; Thomas Jr Squiers [États-Unis] ; John R. Waldman [États-Unis] ; Isaac Wirgin [États-Unis]

Source :

Estuaries [ 0160-8347 ] ; 2001.

RBID : Pascal:01-0389151

Descripteurs français

Pascal (Inist)
- Variation morphologique, Espèce menacée, Estuaire, Morphométrie, Population animale, Variabilité génétique, Génétique population, Comparaison intraspécifique, Etude comparative, Cours eau, Amérique du Nord, Acipenser brevirostrum, Rivière York.
Wicri :
- topic : Estuaire.

English descriptors

KwdEn :
- Animal population, Comparative study, Endangered species, Estuaries, Genetic variability, Intraspecific comparison, Morphological variation, Morphometry, North America, Population genetics, Stream.

Abstract

Shortnose sturgeon, Acipenser brevirostrum, is a small, endangered species which occurs in 19 estuary systems along the east coast of North America. These populations are considered as separate entities by the U.S. National Marine Fisheries Service although evidence of morphologic or genetic differentiation among populations has not been documented. The purpose of this study was to compare morphological and genetic attributes among shortnose sturgeon collected from the Kennebec and Androscoggin Rivers, Maine, and the Hudson River, New York. Six morphometric and five meristic characteristics were quantified, Multivariate and univariate analyses of covariance and variance were used to assess differences among populations. Our analyses provided evidence for distinct populations in the Androscoggin and Kennebec Rivers, but character differentiation was greater between fish from these two locations and the Hudson River. Analysis of morphometric characters indicated significant differences in fish shape among the three rivers, with Hudson River sturgeon differing from the Maine rivers for the characters of head length, snout length, and mouth width. Significant differences were observed for meristic characters, but pairwise comparisons did not reflect a clear pattern of variability. Sequencing of a portion of the mitochondrial DNA control region revealed 15 haplotypes among 73 total specimens from the three rivers. Shortnose sturgeon from the Kennebec and Androscoggin Rivers were different from each other (p = 0.0260); both differed significantly (p < 0.0001) from the Hudson River collection. Gene flow was estimated at approximately 7 female migrants per generation between the two Maine populations and about 1 per generation between each of the Maine populations and the Hudson River population. Such strong stock structuring among presumably recently established post-Pleistocene ( 10,000 yr) populations suggests that this species occurs in highly discrete units. Morphological and genetic variation observed in this study combined with current knowledge of life history attributes of shortnose sturgeon indicate that conservative management decisions are necessary until the patterns and extent of differentiation among populations species-wide can be investigated further.

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A02	`01`			`@0 ESTUDO`
A03		`1`		`@0 Estuaries`
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A08	`01`	`1`	`ENG`	`@1 Morphological and genetic variation among Shortnose sturgeon Acipenser brevirostrum from adjacent and distant Rivers`
A11	`01`	`1`		`@1 WALSH (Maureen G.)`
A11	`02`	`1`		`@1 BAIN (Mark B.)`
A11	`03`	`1`		`@1 SQUIERS (Thomas JR)`
A11	`04`	`1`		`@1 WALDMAN (John R.)`
A11	`05`	`1`		`@1 WIRGIN (Isaac)`
A14	`01`			`@1 New York Cooperative Fish and Wildlife Research Unit, Fernow Hall-Cornell University @2 Ithaca, New York 14853-3001 @3 USA @Z 1 aut. @Z 2 aut.`
A14	`02`			`@1 Maine Department of Marine Resources, 21 State House Station @2 Augusta, Maine 04333-0021 @3 USA @Z 3 aut.`
A14	`03`			`@1 Hudson River Foundation for Science and Environmental Research, 40 West 20th Street, Ninth Floor @2 New York City, New York 10011 @3 USA @Z 4 aut.`
A14	`04`			`@1 Nelson Institute of Environmental Medicine, New York University School of Medicine, 57 Old Forge Road @2 Tuxedo, New York 10987 @3 USA @Z 5 aut.`
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A21				`@1 2001`
A23	`01`			`@0 ENG`
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A44				`@0 0000 @1 © 2001 INIST-CNRS. All rights reserved.`
A45				`@0 35 ref.`
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C01	`01`		`ENG`	@0 Shortnose sturgeon, Acipenser brevirostrum, is a small, endangered species which occurs in 19 estuary systems along the east coast of North America. These populations are considered as separate entities by the U.S. National Marine Fisheries Service although evidence of morphologic or genetic differentiation among populations has not been documented. The purpose of this study was to compare morphological and genetic attributes among shortnose sturgeon collected from the Kennebec and Androscoggin Rivers, Maine, and the Hudson River, New York. Six morphometric and five meristic characteristics were quantified, Multivariate and univariate analyses of covariance and variance were used to assess differences among populations. Our analyses provided evidence for distinct populations in the Androscoggin and Kennebec Rivers, but character differentiation was greater between fish from these two locations and the Hudson River. Analysis of morphometric characters indicated significant differences in fish shape among the three rivers, with Hudson River sturgeon differing from the Maine rivers for the characters of head length, snout length, and mouth width. Significant differences were observed for meristic characters, but pairwise comparisons did not reflect a clear pattern of variability. Sequencing of a portion of the mitochondrial DNA control region revealed 15 haplotypes among 73 total specimens from the three rivers. Shortnose sturgeon from the Kennebec and Androscoggin Rivers were different from each other (p = 0.0260); both differed significantly (p < 0.0001) from the Hudson River collection. Gene flow was estimated at approximately 7 female migrants per generation between the two Maine populations and about 1 per generation between each of the Maine populations and the Hudson River population. Such strong stock structuring among presumably recently established post-Pleistocene ( 10,000 yr) populations suggests that this species occurs in highly discrete units. Morphological and genetic variation observed in this study combined with current knowledge of life history attributes of shortnose sturgeon indicate that conservative management decisions are necessary until the patterns and extent of differentiation among populations species-wide can be investigated further.
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C03	`03`	`X`	`ENG`	`@0 Estuaries @5 03`
C03	`03`	`X`	`SPA`	`@0 Estuario @5 03`
C03	`04`	`X`	`FRE`	`@0 Morphométrie @5 05`
C03	`04`	`X`	`ENG`	`@0 Morphometry @5 05`
C03	`04`	`X`	`SPA`	`@0 Morfometría @5 05`
C03	`05`	`X`	`FRE`	`@0 Population animale @5 06`
C03	`05`	`X`	`ENG`	`@0 Animal population @5 06`
C03	`05`	`X`	`SPA`	`@0 Población animal @5 06`
C03	`06`	`X`	`FRE`	`@0 Variabilité génétique @5 07`
C03	`06`	`X`	`ENG`	`@0 Genetic variability @5 07`
C03	`06`	`X`	`SPA`	`@0 Variabilidad genética @5 07`
C03	`07`	`X`	`FRE`	`@0 Génétique population @5 08`
C03	`07`	`X`	`ENG`	`@0 Population genetics @5 08`
C03	`07`	`X`	`SPA`	`@0 Genética población @5 08`
C03	`08`	`X`	`FRE`	`@0 Comparaison intraspécifique @5 10`
C03	`08`	`X`	`ENG`	`@0 Intraspecific comparison @5 10`
C03	`08`	`X`	`SPA`	`@0 Comparación intraespecífica @5 10`
C03	`09`	`X`	`FRE`	`@0 Etude comparative @5 11`
C03	`09`	`X`	`ENG`	`@0 Comparative study @5 11`
C03	`09`	`X`	`SPA`	`@0 Estudio comparativo @5 11`
C03	`10`	`X`	`FRE`	`@0 Cours eau @5 12`
C03	`10`	`X`	`ENG`	`@0 Stream @5 12`
C03	`10`	`X`	`SPA`	`@0 Curso agua @5 12`
C03	`11`	`X`	`FRE`	`@0 Amérique du Nord @2 NG @5 14`
C03	`11`	`X`	`ENG`	`@0 North America @2 NG @5 14`
C03	`11`	`X`	`SPA`	`@0 America del norte @2 NG @5 14`
C03	`12`	`X`	`FRE`	`@0 Acipenser brevirostrum @2 NS @4 INC @5 65`
C03	`13`	`X`	`FRE`	`@0 Rivière York @4 INC @5 93`
C07	`01`	`X`	`FRE`	`@0 Amérique @2 NG`
C07	`01`	`X`	`ENG`	`@0 America @2 NG`
C07	`01`	`X`	`SPA`	`@0 America @2 NG`
C07	`02`	`X`	`FRE`	`@0 Milieu saumâtre @5 18`
C07	`02`	`X`	`ENG`	`@0 Brackish water environment @5 18`
C07	`02`	`X`	`SPA`	`@0 Medio salobre @5 18`
C07	`03`	`X`	`FRE`	`@0 Pisces @2 NS @5 61`
C07	`03`	`X`	`ENG`	`@0 Pisces @2 NS @5 61`
C07	`03`	`X`	`SPA`	`@0 Pisces @2 NS @5 61`
C07	`04`	`X`	`FRE`	`@0 Vertebrata @2 NS`
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C07	`04`	`X`	`SPA`	`@0 Vertebrata @2 NS`
C07	`05`	`X`	`FRE`	`@0 Acipenseridae @2 NS @4 INC @5 71`
N21				`@1 274`

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Le document en format XML

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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Morphological and genetic variation among Shortnose sturgeon Acipenser brevirostrum from adjacent and distant Rivers</title>
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<front><div type="abstract" xml:lang="en">Shortnose sturgeon, Acipenser brevirostrum, is a small, endangered species which occurs in 19 estuary systems along the east coast of North America. These populations are considered as separate entities by the U.S. National Marine Fisheries Service although evidence of morphologic or genetic differentiation among populations has not been documented. The purpose of this study was to compare morphological and genetic attributes among shortnose sturgeon collected from the Kennebec and Androscoggin Rivers, Maine, and the Hudson River, New York. Six morphometric and five meristic characteristics were quantified, Multivariate and univariate analyses of covariance and variance were used to assess differences among populations. Our analyses provided evidence for distinct populations in the Androscoggin and Kennebec Rivers, but character differentiation was greater between fish from these two locations and the Hudson River. Analysis of morphometric characters indicated significant differences in fish shape among the three rivers, with Hudson River sturgeon differing from the Maine rivers for the characters of head length, snout length, and mouth width. Significant differences were observed for meristic characters, but pairwise comparisons did not reflect a clear pattern of variability. Sequencing of a portion of the mitochondrial DNA control region revealed 15 haplotypes among 73 total specimens from the three rivers. Shortnose sturgeon from the Kennebec and Androscoggin Rivers were different from each other (p = 0.0260); both differed significantly (p < 0.0001) from the Hudson River collection. Gene flow was estimated at approximately 7 female migrants per generation between the two Maine populations and about 1 per generation between each of the Maine populations and the Hudson River population. Such strong stock structuring among presumably recently established post-Pleistocene ( 10,000 yr) populations suggests that this species occurs in highly discrete units. Morphological and genetic variation observed in this study combined with current knowledge of life history attributes of shortnose sturgeon indicate that conservative management decisions are necessary until the patterns and extent of differentiation among populations species-wide can be investigated further.</div>
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<fC01 i1="01" l="ENG"><s0>Shortnose sturgeon, Acipenser brevirostrum, is a small, endangered species which occurs in 19 estuary systems along the east coast of North America. These populations are considered as separate entities by the U.S. National Marine Fisheries Service although evidence of morphologic or genetic differentiation among populations has not been documented. The purpose of this study was to compare morphological and genetic attributes among shortnose sturgeon collected from the Kennebec and Androscoggin Rivers, Maine, and the Hudson River, New York. Six morphometric and five meristic characteristics were quantified, Multivariate and univariate analyses of covariance and variance were used to assess differences among populations. Our analyses provided evidence for distinct populations in the Androscoggin and Kennebec Rivers, but character differentiation was greater between fish from these two locations and the Hudson River. Analysis of morphometric characters indicated significant differences in fish shape among the three rivers, with Hudson River sturgeon differing from the Maine rivers for the characters of head length, snout length, and mouth width. Significant differences were observed for meristic characters, but pairwise comparisons did not reflect a clear pattern of variability. Sequencing of a portion of the mitochondrial DNA control region revealed 15 haplotypes among 73 total specimens from the three rivers. Shortnose sturgeon from the Kennebec and Androscoggin Rivers were different from each other (p = 0.0260); both differed significantly (p < 0.0001) from the Hudson River collection. Gene flow was estimated at approximately 7 female migrants per generation between the two Maine populations and about 1 per generation between each of the Maine populations and the Hudson River population. Such strong stock structuring among presumably recently established post-Pleistocene ( 10,000 yr) populations suggests that this species occurs in highly discrete units. Morphological and genetic variation observed in this study combined with current knowledge of life history attributes of shortnose sturgeon indicate that conservative management decisions are necessary until the patterns and extent of differentiation among populations species-wide can be investigated further.</s0>
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<s5>01</s5>
</fC03>
<fC03 i1="01" i2="X" l="SPA"><s0>Variación morfológica</s0>
<s5>01</s5>
</fC03>
<fC03 i1="02" i2="X" l="FRE"><s0>Espèce menacée</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="X" l="ENG"><s0>Endangered species</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="X" l="SPA"><s0>Especie amenazada</s0>
<s5>02</s5>
</fC03>
<fC03 i1="03" i2="X" l="FRE"><s0>Estuaire</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="X" l="ENG"><s0>Estuaries</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="X" l="SPA"><s0>Estuario</s0>
<s5>03</s5>
</fC03>
<fC03 i1="04" i2="X" l="FRE"><s0>Morphométrie</s0>
<s5>05</s5>
</fC03>
<fC03 i1="04" i2="X" l="ENG"><s0>Morphometry</s0>
<s5>05</s5>
</fC03>
<fC03 i1="04" i2="X" l="SPA"><s0>Morfometría</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="X" l="FRE"><s0>Population animale</s0>
<s5>06</s5>
</fC03>
<fC03 i1="05" i2="X" l="ENG"><s0>Animal population</s0>
<s5>06</s5>
</fC03>
<fC03 i1="05" i2="X" l="SPA"><s0>Población animal</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="X" l="FRE"><s0>Variabilité génétique</s0>
<s5>07</s5>
</fC03>
<fC03 i1="06" i2="X" l="ENG"><s0>Genetic variability</s0>
<s5>07</s5>
</fC03>
<fC03 i1="06" i2="X" l="SPA"><s0>Variabilidad genética</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="X" l="FRE"><s0>Génétique population</s0>
<s5>08</s5>
</fC03>
<fC03 i1="07" i2="X" l="ENG"><s0>Population genetics</s0>
<s5>08</s5>
</fC03>
<fC03 i1="07" i2="X" l="SPA"><s0>Genética población</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="X" l="FRE"><s0>Comparaison intraspécifique</s0>
<s5>10</s5>
</fC03>
<fC03 i1="08" i2="X" l="ENG"><s0>Intraspecific comparison</s0>
<s5>10</s5>
</fC03>
<fC03 i1="08" i2="X" l="SPA"><s0>Comparación intraespecífica</s0>
<s5>10</s5>
</fC03>
<fC03 i1="09" i2="X" l="FRE"><s0>Etude comparative</s0>
<s5>11</s5>
</fC03>
<fC03 i1="09" i2="X" l="ENG"><s0>Comparative study</s0>
<s5>11</s5>
</fC03>
<fC03 i1="09" i2="X" l="SPA"><s0>Estudio comparativo</s0>
<s5>11</s5>
</fC03>
<fC03 i1="10" i2="X" l="FRE"><s0>Cours eau</s0>
<s5>12</s5>
</fC03>
<fC03 i1="10" i2="X" l="ENG"><s0>Stream</s0>
<s5>12</s5>
</fC03>
<fC03 i1="10" i2="X" l="SPA"><s0>Curso agua</s0>
<s5>12</s5>
</fC03>
<fC03 i1="11" i2="X" l="FRE"><s0>Amérique du Nord</s0>
<s2>NG</s2>
<s5>14</s5>
</fC03>
<fC03 i1="11" i2="X" l="ENG"><s0>North America</s0>
<s2>NG</s2>
<s5>14</s5>
</fC03>
<fC03 i1="11" i2="X" l="SPA"><s0>America del norte</s0>
<s2>NG</s2>
<s5>14</s5>
</fC03>
<fC03 i1="12" i2="X" l="FRE"><s0>Acipenser brevirostrum</s0>
<s2>NS</s2>
<s4>INC</s4>
<s5>65</s5>
</fC03>
<fC03 i1="13" i2="X" l="FRE"><s0>Rivière York</s0>
<s4>INC</s4>
<s5>93</s5>
</fC03>
<fC07 i1="01" i2="X" l="FRE"><s0>Amérique</s0>
<s2>NG</s2>
</fC07>
<fC07 i1="01" i2="X" l="ENG"><s0>America</s0>
<s2>NG</s2>
</fC07>
<fC07 i1="01" i2="X" l="SPA"><s0>America</s0>
<s2>NG</s2>
</fC07>
<fC07 i1="02" i2="X" l="FRE"><s0>Milieu saumâtre</s0>
<s5>18</s5>
</fC07>
<fC07 i1="02" i2="X" l="ENG"><s0>Brackish water environment</s0>
<s5>18</s5>
</fC07>
<fC07 i1="02" i2="X" l="SPA"><s0>Medio salobre</s0>
<s5>18</s5>
</fC07>
<fC07 i1="03" i2="X" l="FRE"><s0>Pisces</s0>
<s2>NS</s2>
<s5>61</s5>
</fC07>
<fC07 i1="03" i2="X" l="ENG"><s0>Pisces</s0>
<s2>NS</s2>
<s5>61</s5>
</fC07>
<fC07 i1="03" i2="X" l="SPA"><s0>Pisces</s0>
<s2>NS</s2>
<s5>61</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>
<s2>NS</s2>
<s4>INC</s4>
<s5>71</s5>
</fC07>
<fN21><s1>274</s1>
</fN21>
</pA>
</standard>
</inist>
</record>

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Morphological and genetic variation among Shortnose sturgeon Acipenser brevirostrum from adjacent and distant Rivers

Morphological and genetic variation among Shortnose sturgeon Acipenser brevirostrum from adjacent and distant Rivers

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