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Abstract:

C-banding was carried out on Belostoma elegans (2n=26+X1X2Y) (♂), B. micantulum (2n=14+XY) (♂) and B. oxyurum (2n=6+XY) (♂) (Belostomatidae, Heteroptera). The C-bands always have a telomeric localization and no interstitial bands were detected. An inverse relationship between chromosome size and chromosome number exists, and besides, an inverse relationship between chromosome size and the size of the C-bands was observed. The DNA content was determined in all three species. B. elegans has a C content of 1.55±0.06 pg, B. micantulum has 0.88±0.04 pg and B. oxyurum had 0.53±0.04 pg. Considering the male meiotic characteristics, the chromosome complement and the results of C-banding and DNA content, the karyotype of B. oxyurum probably originated through autosomal fusions. The karyotype of B. micantulum and B. elegans could have originated through autosomal fusions or fragmentations respectively; with the information available up to now it is not possible to discard any of the two pathways. © 1988 Kluwer Academic Publishers.

Registro:

Documento: Artículo
Título:C-banding and DNA content in three species of Belostoma (Heteroptera) with large differences in chromosome size and number
Autor:Papeschi, A.G.
Filiación:Laboratorio de Genética, Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón II, Buenos Aires, 1428, Argentina
Becaria de la Comisión de Investigaciones Científicas de la Provincia de Buenos Aires, Buenos Aires, Argentina
Año:1988
Volumen:76
Número:1
Página de inicio:43
Página de fin:51
DOI: http://dx.doi.org/10.1007/BF00126009
Título revista:Genetica
Título revista abreviado:Genetica
ISSN:00166707
CODEN:GENEA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00166707_v76_n1_p43_Papeschi

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Citas:

---------- APA ----------
(1988) . C-banding and DNA content in three species of Belostoma (Heteroptera) with large differences in chromosome size and number. Genetica, 76(1), 43-51.
http://dx.doi.org/10.1007/BF00126009
---------- CHICAGO ----------
Papeschi, A.G. "C-banding and DNA content in three species of Belostoma (Heteroptera) with large differences in chromosome size and number" . Genetica 76, no. 1 (1988) : 43-51.
http://dx.doi.org/10.1007/BF00126009
---------- MLA ----------
Papeschi, A.G. "C-banding and DNA content in three species of Belostoma (Heteroptera) with large differences in chromosome size and number" . Genetica, vol. 76, no. 1, 1988, pp. 43-51.
http://dx.doi.org/10.1007/BF00126009
---------- VANCOUVER ----------
Papeschi, A.G. C-banding and DNA content in three species of Belostoma (Heteroptera) with large differences in chromosome size and number. Genetica. 1988;76(1):43-51.
http://dx.doi.org/10.1007/BF00126009