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Abstract:

The behaviour of a large, stable B-isochromosome during male meiosis of Metaleptea brevicornis adspersa Blanch. (Acridinae, Acrididae) was studied in two Argentine populations. The B-chromosome is metacentric and long as the longest members of the standard complement which consists of 23 (22 + X) telocentric chromosomes in the male. Both arms of the B are consistently completely paired in pachytene and they are positively heteropycnotic along most of their length while their distal ends are isopycnotic. At diplotene, diakinesis and metaphase I the B forms a ring in more than 95% of the analyzed cells and interstitial chiasmata were frequently observed within the euchromatic distal portions. At metaphase I the B-chromosome was oriented at the equator in almost 30% of the cells; this was correlated with a comparable frequency of lagging during anaphase I. The lagging of the B disturbs cell division in such a way that normal telophase separation is impeded with the consequent formation of a restitution diploid nucleus and, simultaneously, the spindle is displaced and an unequal cytokinesis occurs in which a large diploid cell and a small anucleated bud are formed. The abnormal cell division was also observed, though less frequently, during second meiotic division. As a consequence of this process, the production of abnormal spermatids (diploid, tetraploid and microspermatids) in Bcarriers shows a highly significant increase above the normal low level observed in standard males. © 1986 Taylor & Francis Group, LLC.

Registro:

Documento: Artículo
Título:Effects on cytokinesis and sperm formation of a b-isochromosome in metaleptea brevicorms adspersa (Acridinae, acrididae)
Autor:Bidau, C.J.
Filiación:Laboratorio de Genética, Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, 1428, Argentina
Año:1986
Volumen:39
Número:2
Página de inicio:165
Página de fin:177
DOI: http://dx.doi.org/10.1080/00087114.1986.10797778
Título revista:Caryologia
Título revista abreviado:Caryologia
ISSN:00087114
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00087114_v39_n2_p165_Bidau

Referencias:

  • Bidau, C.J., Meiotic pairing and chiasma localization in Scyllina signatipennis (Gompbocerinae, Acrididae) (1984) Caryologia, 37, pp. 87-103
  • Bidau, C.J., (1984) Estudios citogenéticos En Orthoptera De Sudamérica, , D. Sc. Thesis, Universidad de Buenos Aires
  • Bidau, C.J., Hasson, E.R., Population cytology of Leptysma argentina Bruner (Leptysminae, Acrididae) (1984) Genética, 62, pp. 161-175
  • Confalonier!, V.A., Bidau, C.J., The B-chromosomes of two species of Cylindrotettix (Leptysminae, Acrididae) (1986) Genética, 68, pp. 87-95
  • Craig-Cameron, T.A., Jones, G.H., Meiosis in Euthystira hrachyptera (1970) Ann. Stat. Biol, De Besse-En-Chandesse, 5, pp. 275-292
  • Fletcher, H.L., Hewitt, G.M., Effect of a «B» chromosome on chiasma localisation and frequency in male Euthystira hrachyptera (1980) Heredity, 44, pp. 341-347
  • Gosalvez, J., Garcia De La Vega, C., Rufas, J.S., Lopez-Fernandez, C., Unstable B-chromosomes producing abnormal spermatid nuclei in Sphingonotus coerulans (Orthoptera) (1985) Arch. Biol., 96. , press
  • Hewitt, G.M., Orthoptera. Animal Cytogenetics (1979) Insecta, 3. , Stuttgart: Born-traeger
  • John, B., Henderson, S.A., Asynapsis and polyploidy in Schistocerca paranensis (1962) Chromosoma, 13, pp. 111-147
  • John, B., Hewitt, G.M., The B-chromosomesystem of Myrmeleotettix maculatus (Thunb.). I. The mechanics (1965) Chromosoma, 16, pp. 548-578
  • John, B., King, M., Heterochromatin variation in Cryptobothrus chrysophorus. III. Synthetic hybrids (1980) Chromosoma, 78, pp. 165-186
  • John, B., Lightfoot, D.C., Weissman, D.B., The meiotic.Behaviour of natural F, hybrids between Trimerotropis suffusa Scudder and T. cyaneipennis Brunner (Orthoptera: Oedipodinae) (1983) Can. J. Genet. Cytol., 25, pp. 467-477
  • John, B., Weissman, D.B., Cytogenetic components of reproductive isolation in Trimerotropis thalassica and T. Occidentalis (1977) Chromosoma, 60, pp. 187-203
  • Jones, R.N., B chromosome systems in floweringplants and animal species (1975) Int. Rev. Cytol., 40, pp. 1-100
  • Jones, R.N., Rees, H., (1982) B Chromosomes, , London-New York, Academic Press
  • Kawamura, K., Studies on cytokinesis in neuroblasts of the grasshopper Chortophaga viridifas-ciata (De Geer). II. The role of the mitotic apparatus in cytokinesis (1960) Exp. Cell Res., 21, pp. 9-18
  • Mazia, D., Mitosis and the phisiology of cell division (1961) The Cell., 3. , J. Brachet and A. E. Mirsky, Eds.), London-New York, Academic Press
  • Muntzing, A., Accessory chromosomes (1975) Ann. Rev. Genet., 8, pp. 243-266
  • Nur, U., Mitotic instability leading to an accumulation of B-chromosomes in grasshoppers (1969) Chromosoma, 27, pp. 1-19
  • Pearse, F.K., Ehrlich, P.R., B chromosome variation in Euphydryas colon (Lepidoptera, Nymphalidae) (1979) Chromosoma, 73, pp. 263-274
  • Peters, G.B., Germ line polysomy in the grasshopper Atractomorpha similis (1981) Chromosoma, 81, pp. 593-617
  • Rothfels, K., Procunier, W.A., B-chromosomes of Neopodismopsis abdominalis (Acrididae) (1975) Chromosoma, 52, pp. 137-148
  • Suja, J.A., Gosalvez, J., Lopez-Fernandez, C., Rufas, J.S., A cytogenetic analysis in Psophus stridulus (L.) (Orthoptera: Acrididae). B-chromosomes and abnormal spermatid nuclei (1985) Genética, , press

Citas:

---------- APA ----------
(1986) . Effects on cytokinesis and sperm formation of a b-isochromosome in metaleptea brevicorms adspersa (Acridinae, acrididae). Caryologia, 39(2), 165-177.
http://dx.doi.org/10.1080/00087114.1986.10797778
---------- CHICAGO ----------
Bidau, C.J. "Effects on cytokinesis and sperm formation of a b-isochromosome in metaleptea brevicorms adspersa (Acridinae, acrididae)" . Caryologia 39, no. 2 (1986) : 165-177.
http://dx.doi.org/10.1080/00087114.1986.10797778
---------- MLA ----------
Bidau, C.J. "Effects on cytokinesis and sperm formation of a b-isochromosome in metaleptea brevicorms adspersa (Acridinae, acrididae)" . Caryologia, vol. 39, no. 2, 1986, pp. 165-177.
http://dx.doi.org/10.1080/00087114.1986.10797778
---------- VANCOUVER ----------
Bidau, C.J. Effects on cytokinesis and sperm formation of a b-isochromosome in metaleptea brevicorms adspersa (Acridinae, acrididae). Caryologia. 1986;39(2):165-177.
http://dx.doi.org/10.1080/00087114.1986.10797778