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Abstract:

Artemia brine shrimps inhabit hypersaline ecosystems all over the world except Antarctica. In South America two bisexual diploid species are encountered: Artemia franciscana Kellogg distributed along America and Artemia persimilis Piccinelli and Prosdocimi restricted to Argentina and a few Chilean localities. A. franciscana was recently cited for the first time in our country and our results suggested a possible hybridization in Las Tunas Lagoon (Córdoba province) between both species. In the present work four new Argentinean populations of Artemia have been cytogenetically analyzed by conventional staining, silver staining, and C and DAPI banding. The populations Salina La Antigua (La Rioja province), Salinas Grandes (Córdoba province) and Pampa de las Salinas (San Luis province) gave similar results compatible with A. franciscana (2n=42, n=21). Conversely, Salitral de la Vidriera population (Buenos Aires province) would correspond to A. persimilis (2n=44). While in Salitral de la Vidriera only one or two small chromocenters C positive and DAPI bright were detected, in Pampa de las Salinas and Salinas Grandes many of them were observed. Nevertheless, both populations presented less heterochromatin than the Artemia franciscana reference strain from Great Salt Lake (USA). These results constitute further evidence to the occurrence of heterochromatin variations not only between both species but also within each one. Last but not least, with the present contribution A. franciscana is now cited in three new Argentinean localities. © 2004 Taylor & Francis Group, LLC.

Registro:

Documento: Artículo
Título:Cytogenetic analysis of four argentinean populations of Artemia (Crustacea Branchipoda: Anostraca)
Autor:Lipko, P.; Papeschi, A.G.; Cohen, R.G.
Filiación:Departamento de Ecología, Genética y Evolución, Laboratorio de Citogenética y Evolución, Brazil
Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón II, Ciudad Universitaria, Buenos Aires, C1428EHA, Argentina
Fellow of the Argentine Research Council, Brazil
Palabras clave:C-banding; Fluorescent banding; Heterochromatin; Meiosis; Mitosis; Anostraca; Artemia; Artemia franciscana; Artemia persimilis; Crustacea; Scombridae
Año:2004
Volumen:57
Número:3
Página de inicio:283
Página de fin:289
DOI: http://dx.doi.org/10.1080/00087114.2004.10589406
Título revista:Caryologia
Título revista abreviado:Caryologia
ISSN:00087114
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00087114_v57_n3_p283_Lipko

Referencias:

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Citas:

---------- APA ----------
Lipko, P., Papeschi, A.G. & Cohen, R.G. (2004) . Cytogenetic analysis of four argentinean populations of Artemia (Crustacea Branchipoda: Anostraca). Caryologia, 57(3), 283-289.
http://dx.doi.org/10.1080/00087114.2004.10589406
---------- CHICAGO ----------
Lipko, P., Papeschi, A.G., Cohen, R.G. "Cytogenetic analysis of four argentinean populations of Artemia (Crustacea Branchipoda: Anostraca)" . Caryologia 57, no. 3 (2004) : 283-289.
http://dx.doi.org/10.1080/00087114.2004.10589406
---------- MLA ----------
Lipko, P., Papeschi, A.G., Cohen, R.G. "Cytogenetic analysis of four argentinean populations of Artemia (Crustacea Branchipoda: Anostraca)" . Caryologia, vol. 57, no. 3, 2004, pp. 283-289.
http://dx.doi.org/10.1080/00087114.2004.10589406
---------- VANCOUVER ----------
Lipko, P., Papeschi, A.G., Cohen, R.G. Cytogenetic analysis of four argentinean populations of Artemia (Crustacea Branchipoda: Anostraca). Caryologia. 2004;57(3):283-289.
http://dx.doi.org/10.1080/00087114.2004.10589406