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Abstract:

Male meiosis was studied in a population of Acanonicus hahni (Stål), and nine of the sixteen individuals analyzed showed desynapsis. The frequency of univalents varied from one to seven percent in eight of them, while in the ninth the percentage of cells with univalents was higher (12%). The univalents auto-orientate at metaphase I in the center of the ring formed by autosomal bivalents and divide equationally at anaphase I; at metaphase II they show touch-and-go pairing, and lie in the center of the ring of autosomes. A desynaptic origin of the univalents is proposed, and the arrangement of the chromosomes in the first and second metaphase plate in the normal and desynaptic individuals is compared and discussed. The meiotic characteristics of these desynaptic individuals are also compared with those described in other insects with holocentric and monocentric chromosomes. It is suggested that any achiasmatic chromosome, whether a univalent, m or sex chromosome, will induce the formation of a ring and with some or all of them lying in its centre. © 1990 Kluwer Academic Publishers.

Registro:

Documento: Artículo
Título:Meiotic studies in Acanonicus hahni (Stål) (Coreidae, Heteroptera) I. Behaviour of univalents in desynaptic individuals
Autor:Papeschi, A.G.; Mola, L.M.
Filiación:Laboratorio de Genética, Depto, de Ciencias Biológicas, FCEN, UBA, Intendente Güiraldes y Costanera Norte, Buenos Aires, 1428, Argentina
Año:1990
Volumen:80
Número:1
Página de inicio:31
Página de fin:38
DOI: http://dx.doi.org/10.1007/BF00120117
Título revista:Genetica
Título revista abreviado:Genetica
ISSN:00166707
CODEN:GENEA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00166707_v80_n1_p31_Papeschi

Referencias:

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  • Diez, M., Puertas, M.J., Chiasma distribution in asynaptic Locusta migratoria (1981) Chromosoma, 84, pp. 431-437
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  • John, B., Naylor, B., Anomalous chromosome behaviour in the germ line of Schistocerca gregaria (1961) Heredity, 16, pp. 187-198
  • Kiauta, B., Studies on the germ cell chromosome cytology of some cytotaxonomically interesting or hitherto not studied Odonata from the autonomous region Friuli-Venezia, Giulia (Northern Italy) (1971) Atti Mus. civ. Stor. nat. Trieste, 27 (2), pp. 67-127
  • Kiauta, B., Boyes, J.W., Cytology of ten Southamerican Libellulidae, with cytophylogenetic considerations on the genera Orthemis Hagen and Erythrodiplax Brauer (Odonata, Anisoptera) (1972) Genetica, 43, pp. 407-421
  • Kiauta, B., Van Brink, J.M., Male chromosome complements of some Florida dragonflies, United States (1978) Odonatologica, 7 (1), pp. 15-25
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  • Papeschi, A.G., Bidau, C.J., Chromosome complement and male meiosis in four species of Belostoma Latreille (Belostomatidae, Heteroptera) (1985) Brazil. J. Genetics, 8 (2), pp. 249-261
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Citas:

---------- APA ----------
Papeschi, A.G. & Mola, L.M. (1990) . Meiotic studies in Acanonicus hahni (Stål) (Coreidae, Heteroptera) I. Behaviour of univalents in desynaptic individuals. Genetica, 80(1), 31-38.
http://dx.doi.org/10.1007/BF00120117
---------- CHICAGO ----------
Papeschi, A.G., Mola, L.M. "Meiotic studies in Acanonicus hahni (Stål) (Coreidae, Heteroptera) I. Behaviour of univalents in desynaptic individuals" . Genetica 80, no. 1 (1990) : 31-38.
http://dx.doi.org/10.1007/BF00120117
---------- MLA ----------
Papeschi, A.G., Mola, L.M. "Meiotic studies in Acanonicus hahni (Stål) (Coreidae, Heteroptera) I. Behaviour of univalents in desynaptic individuals" . Genetica, vol. 80, no. 1, 1990, pp. 31-38.
http://dx.doi.org/10.1007/BF00120117
---------- VANCOUVER ----------
Papeschi, A.G., Mola, L.M. Meiotic studies in Acanonicus hahni (Stål) (Coreidae, Heteroptera) I. Behaviour of univalents in desynaptic individuals. Genetica. 1990;80(1):31-38.
http://dx.doi.org/10.1007/BF00120117