Genetic variability of Tehuelche scallop, Aequipecten tehuelchus, populations from the Patagonian coasts (Argentina)

Autores
Real, Luciano Esteban; Julio, Norma; Gardenal, Cristina Noemi; Ciocco, Nestor Fernando
Año de publicación
2004
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Genetic variation was investigated in five subtidal locations from the north of San Matías Gulf (42°23′S) to the north of San Jorge Gulf (45°02′S). Fifteen loci were studied by means of vertical starch gel electrophoresis; ten loci were polymorphic. The percentages of polymorphic loci (P0.99 and P0.95 criteria) varied between 40% and 53.33% and between 33.33% and 46.67%, respectively. Expected mean heterozygosity per locus (He) ranged from 0.128 (Bajo Oliveira-El Sótano) to 0.160 (Puerto Madryn); this range is similar to those observed for other scallop species. All the loci were in Hardy-Weinberg equilibrium. The estimated genetic distances among populations were significantly lower than those reported for comparisons between populations of different pectinid species, suggesting that the five populations studied belong to the same species (Aequipecten tehuelchus). The absence of exclusive fixed alleles also supported that assumption. The results obtained suggest: (i) assignment of species or subspecies status to some morphological variants of the shells, like the 'madrynensis' form is not supported; (ii) the commercially exploited Tehuelche scallop from San Matías and San José Gulfs should be managed as distinct stocks.
Fil: Real, Luciano Esteban. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Julio, Norma. Universidad Nacional de Córdoba. Facultad de Cs.exactas Físicas y Naturales. Cátedra de Genética de Poblaciones y Evolución; Argentina
Fil: Gardenal, Cristina Noemi. Universidad Nacional de Córdoba. Facultad de Cs.exactas Físicas y Naturales. Cátedra de Genética de Poblaciones y Evolución; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Ciocco, Nestor Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
Materia
GENETIC
VARIABILITY
SCALLOP
AEQUIPECTEN
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/100339
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/100339
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Genetic variability of Tehuelche scallop, Aequipecten tehuelchus, populations from the Patagonian coasts (Argentina)Real, Luciano EstebanJulio, NormaGardenal, Cristina NoemiCiocco, Nestor FernandoGENETICVARIABILITYSCALLOPAEQUIPECTENhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Genetic variation was investigated in five subtidal locations from the north of San Matías Gulf (42°23′S) to the north of San Jorge Gulf (45°02′S). Fifteen loci were studied by means of vertical starch gel electrophoresis; ten loci were polymorphic. The percentages of polymorphic loci (P0.99 and P0.95 criteria) varied between 40% and 53.33% and between 33.33% and 46.67%, respectively. Expected mean heterozygosity per locus (He) ranged from 0.128 (Bajo Oliveira-El Sótano) to 0.160 (Puerto Madryn); this range is similar to those observed for other scallop species. All the loci were in Hardy-Weinberg equilibrium. The estimated genetic distances among populations were significantly lower than those reported for comparisons between populations of different pectinid species, suggesting that the five populations studied belong to the same species (Aequipecten tehuelchus). The absence of exclusive fixed alleles also supported that assumption. The results obtained suggest: (i) assignment of species or subspecies status to some morphological variants of the shells, like the 'madrynensis' form is not supported; (ii) the commercially exploited Tehuelche scallop from San Matías and San José Gulfs should be managed as distinct stocks.Fil: Real, Luciano Esteban. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Julio, Norma. Universidad Nacional de Córdoba. Facultad de Cs.exactas Físicas y Naturales. Cátedra de Genética de Poblaciones y Evolución; ArgentinaFil: Gardenal, Cristina Noemi. Universidad Nacional de Córdoba. Facultad de Cs.exactas Físicas y Naturales. Cátedra de Genética de Poblaciones y Evolución; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Ciocco, Nestor Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; ArgentinaCambridge University Press2004-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/100339Real, Luciano Esteban; Julio, Norma; Gardenal, Cristina Noemi; Ciocco, Nestor Fernando; Genetic variability of Tehuelche scallop, Aequipecten tehuelchus, populations from the Patagonian coasts (Argentina); Cambridge University Press; Journal of the Marine Biological Association of the United Kingdom; 84; 1; 2-2004; 235-2380025-3154CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1017/S0025315404009099hinfo:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/journal-of-the-marine-biological-association-of-the-united-kingdom/article/genetic-variability-of-tehuelche-scallop-aequipecten-tehuelchus-populations-from-the-patagonian-coasts-argentina/4511A85170FA846AE5151D1F906A8683info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:58:12Zoai:ri.conicet.gov.ar:11336/100339instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:58:12.272CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Genetic variability of Tehuelche scallop, Aequipecten tehuelchus, populations from the Patagonian coasts (Argentina)
title Genetic variability of Tehuelche scallop, Aequipecten tehuelchus, populations from the Patagonian coasts (Argentina)
spellingShingle Genetic variability of Tehuelche scallop, Aequipecten tehuelchus, populations from the Patagonian coasts (Argentina)
Real, Luciano Esteban
GENETIC
VARIABILITY
SCALLOP
AEQUIPECTEN
title_short Genetic variability of Tehuelche scallop, Aequipecten tehuelchus, populations from the Patagonian coasts (Argentina)
title_full Genetic variability of Tehuelche scallop, Aequipecten tehuelchus, populations from the Patagonian coasts (Argentina)
title_fullStr Genetic variability of Tehuelche scallop, Aequipecten tehuelchus, populations from the Patagonian coasts (Argentina)
title_full_unstemmed Genetic variability of Tehuelche scallop, Aequipecten tehuelchus, populations from the Patagonian coasts (Argentina)
title_sort Genetic variability of Tehuelche scallop, Aequipecten tehuelchus, populations from the Patagonian coasts (Argentina)
dc.creator.none.fl_str_mv Real, Luciano Esteban
Julio, Norma
Gardenal, Cristina Noemi
Ciocco, Nestor Fernando
author Real, Luciano Esteban
author_facet Real, Luciano Esteban
Julio, Norma
Gardenal, Cristina Noemi
Ciocco, Nestor Fernando
author_role author
author2 Julio, Norma
Gardenal, Cristina Noemi
Ciocco, Nestor Fernando
author2_role author
author
author
dc.subject.none.fl_str_mv GENETIC
VARIABILITY
SCALLOP
AEQUIPECTEN
topic GENETIC
VARIABILITY
SCALLOP
AEQUIPECTEN
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Genetic variation was investigated in five subtidal locations from the north of San Matías Gulf (42°23′S) to the north of San Jorge Gulf (45°02′S). Fifteen loci were studied by means of vertical starch gel electrophoresis; ten loci were polymorphic. The percentages of polymorphic loci (P0.99 and P0.95 criteria) varied between 40% and 53.33% and between 33.33% and 46.67%, respectively. Expected mean heterozygosity per locus (He) ranged from 0.128 (Bajo Oliveira-El Sótano) to 0.160 (Puerto Madryn); this range is similar to those observed for other scallop species. All the loci were in Hardy-Weinberg equilibrium. The estimated genetic distances among populations were significantly lower than those reported for comparisons between populations of different pectinid species, suggesting that the five populations studied belong to the same species (Aequipecten tehuelchus). The absence of exclusive fixed alleles also supported that assumption. The results obtained suggest: (i) assignment of species or subspecies status to some morphological variants of the shells, like the 'madrynensis' form is not supported; (ii) the commercially exploited Tehuelche scallop from San Matías and San José Gulfs should be managed as distinct stocks.
Fil: Real, Luciano Esteban. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Julio, Norma. Universidad Nacional de Córdoba. Facultad de Cs.exactas Físicas y Naturales. Cátedra de Genética de Poblaciones y Evolución; Argentina
Fil: Gardenal, Cristina Noemi. Universidad Nacional de Córdoba. Facultad de Cs.exactas Físicas y Naturales. Cátedra de Genética de Poblaciones y Evolución; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Ciocco, Nestor Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
description Genetic variation was investigated in five subtidal locations from the north of San Matías Gulf (42°23′S) to the north of San Jorge Gulf (45°02′S). Fifteen loci were studied by means of vertical starch gel electrophoresis; ten loci were polymorphic. The percentages of polymorphic loci (P0.99 and P0.95 criteria) varied between 40% and 53.33% and between 33.33% and 46.67%, respectively. Expected mean heterozygosity per locus (He) ranged from 0.128 (Bajo Oliveira-El Sótano) to 0.160 (Puerto Madryn); this range is similar to those observed for other scallop species. All the loci were in Hardy-Weinberg equilibrium. The estimated genetic distances among populations were significantly lower than those reported for comparisons between populations of different pectinid species, suggesting that the five populations studied belong to the same species (Aequipecten tehuelchus). The absence of exclusive fixed alleles also supported that assumption. The results obtained suggest: (i) assignment of species or subspecies status to some morphological variants of the shells, like the 'madrynensis' form is not supported; (ii) the commercially exploited Tehuelche scallop from San Matías and San José Gulfs should be managed as distinct stocks.
publishDate 2004
dc.date.none.fl_str_mv 2004-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/100339
Real, Luciano Esteban; Julio, Norma; Gardenal, Cristina Noemi; Ciocco, Nestor Fernando; Genetic variability of Tehuelche scallop, Aequipecten tehuelchus, populations from the Patagonian coasts (Argentina); Cambridge University Press; Journal of the Marine Biological Association of the United Kingdom; 84; 1; 2-2004; 235-238
0025-3154
CONICET Digital
CONICET
url http://hdl.handle.net/11336/100339
identifier_str_mv Real, Luciano Esteban; Julio, Norma; Gardenal, Cristina Noemi; Ciocco, Nestor Fernando; Genetic variability of Tehuelche scallop, Aequipecten tehuelchus, populations from the Patagonian coasts (Argentina); Cambridge University Press; Journal of the Marine Biological Association of the United Kingdom; 84; 1; 2-2004; 235-238
0025-3154
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1017/S0025315404009099h
info:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/journal-of-the-marine-biological-association-of-the-united-kingdom/article/genetic-variability-of-tehuelche-scallop-aequipecten-tehuelchus-populations-from-the-patagonian-coasts-argentina/4511A85170FA846AE5151D1F906A8683
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Cambridge University Press
publisher.none.fl_str_mv Cambridge University Press
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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