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Abstract:

Cytogenetic analysis of an Argentine population of Largus rufipennis has revealed the presence of autosomal univalents and a supernumerary chromosome. All individuals present univalents at a variable frequency (0.31-21.83 per cent), and half of them carry a B chromosome at low frequency. Both the B chromosome and univalents divide equationally at anaphase I and reductionally at the second division. The present population is very heterogeneous with respect to chiasma frequency and distribution: desynapsis is responsible for the appearance of univalents, while the presence of the B chromosome is associated with an increase in chiasma frequency. However, two individuals that lack the supernumerary chromosome show a strikingly high chiasma frequency. This variation in chiasma frequency should be the result of the interaction between genes controlling chiasmata and the environmental conditions (both internal and external) together with the genetic background of each individual. © 1993 The Genetical Society of Great Britain.

Registro:

Documento: Artículo
Título:Meiotic studies in largus rufipennis (Castelnau) (largidae, heteroptera): Frequency and behaviour of ring bivalents, univalents and b chromosomes
Autor:Mola, L.M.; Papeschi, A.G.
Filiación:Laboratorio de Genetica, Depto de Ciencias Biologicas, FCEN and UBA Int, Buenos Aires, 1428, Argentina
Palabras clave:B chromosome; Chiasma frequency; Holokinetic chromosomes; Ring bivalents; Univalents
Año:1993
Volumen:71
Número:1
Página de inicio:33
Página de fin:40
DOI: http://dx.doi.org/10.1038/hdy.1993.104
Título revista:Heredity
Título revista abreviado:Heredity
ISSN:0018067X
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0018067X_v71_n1_p33_Mola

Referencias:

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  • Camacho, J.P.M., Belda, J., Cabrero, J., Meiotic Behaviour Of The Holocentric Chromosomes Of Nezara Viridula (Insecta, Heteroptera) Analysed By C-Banding And Silver Impregnation (1985) Can. J. Genet. Cytol., 27, pp. 490-497
  • Jackson, R.C., Polyploidy And Diploidy: New Perspectives On Chromosome Pairing And Its Evolutionary Implications (1982) Am. J. Bot., 69, pp. 1512-1523
  • Jackson, R.C., Chromosome Pairing In Species And Hybrids (1984) Plant Biosystematics, pp. 67-86. , Grant, W. H. (Ed.), Academic Press, London
  • Jones, G.H., Chiasmata (1987) Meiosis, pp. 213-244. , Moens, P. B. (Ed.), Academic Press, London
  • Manna, G.K., Chromosomes In Evolution In Heteroptera (1984) Chromosomes in Evolution of Eukaryotic Groups, 2, pp. 189-225. , Sharma, A. K. And Sharma, A, Crc Press, Florida
  • Manna, G.K., Ueshima, N., Dey, S.K., Deb-Mallick, S., Marked Sex Chromosomal Variations Between Indian And Japanese Species Of Physopelta (Largidae, Heteroptera) (1985) Cytologia, 5, pp. 621-630
  • Papeschi, A.G., (1992) Estudios Citogeneticos Y Evolutivos En Heteroptera., , Tesis De Doctorado, Fcen, Uba
  • Papeschi, A.G., Mola, L.M., Meiotic Studies In Acanonicus Hahni (Stal) (Coreidae, Heteroptera). I. Behaviour Of Univalents In Desynaptic Individuals (1990) Genetica, 80, pp. 31-38
  • Piza, S.D., De, T., Comportamento Dos Cromossomios Na Meiose De Euryophthalmus Rufipennis Laporte (Hemip- Tera, Pyrrhocoridae) (1946) Luiz De Queiroz, 3, pp. 27-54
  • Piza, S.D.T., De, T., Provas Cruciais Da Dicentricedade Dos Cromossomios Dos Hemipteros (1953) Luiz De Queiroz, 10, pp. 156-186
  • Ray-Chaudhuri, S.P., Manna, G.K., Evidence Of A Multiple Sex Chromosome Mechanism In Pyrrhocorid Bug Physopelta Schlanbuschi Fabr (1955) Proc. Zool. Soc Calcutta), 8, pp. 65-77. , Cited By Manna, 1962
  • Ueshima, N., Hemiptera Ii. Heteroptera (1979) Animal Cytogenetics, 3. , John, B. (Ed.), Borntraeger, Berlin
  • Vidal, O.R., Lacau, I.M., Los Cromosomas De Euryophthalmus Fasciatus Blanchard (Heteroptera, Pyrrhocoridae) (1985) Physis (Buenos Aires), Sect. C, 43, pp. 13-17
  • White, M.J.D., (1973) Animal Cytology and Evolution, , 3rd Edn. Cambridge University Press, London
  • Wilson, E.B., Studies On Chromosomes. Iv. The Accesory Chromosomes In Syromastes And Pyrrhocoris, Which A Comparative Review Of The Types Of Sexual Differences Of The Chromosome Groups (1909) J. Exp. Zool., 6, pp. 69-99

Citas:

---------- APA ----------
Mola, L.M. & Papeschi, A.G. (1993) . Meiotic studies in largus rufipennis (Castelnau) (largidae, heteroptera): Frequency and behaviour of ring bivalents, univalents and b chromosomes. Heredity, 71(1), 33-40.
http://dx.doi.org/10.1038/hdy.1993.104
---------- CHICAGO ----------
Mola, L.M., Papeschi, A.G. "Meiotic studies in largus rufipennis (Castelnau) (largidae, heteroptera): Frequency and behaviour of ring bivalents, univalents and b chromosomes" . Heredity 71, no. 1 (1993) : 33-40.
http://dx.doi.org/10.1038/hdy.1993.104
---------- MLA ----------
Mola, L.M., Papeschi, A.G. "Meiotic studies in largus rufipennis (Castelnau) (largidae, heteroptera): Frequency and behaviour of ring bivalents, univalents and b chromosomes" . Heredity, vol. 71, no. 1, 1993, pp. 33-40.
http://dx.doi.org/10.1038/hdy.1993.104
---------- VANCOUVER ----------
Mola, L.M., Papeschi, A.G. Meiotic studies in largus rufipennis (Castelnau) (largidae, heteroptera): Frequency and behaviour of ring bivalents, univalents and b chromosomes. Heredity. 1993;71(1):33-40.
http://dx.doi.org/10.1038/hdy.1993.104