Abstract
The relationship between the symmetry of the meiotic configuration and the type of meiotic orientation (disjunctional and non-disjunctional) in Robertsonian trivalente of Dichroplus pratensis (Melanoplinae, Acrididae) was analysed. The results indicate, first, that neither chromosomal size nor the relation between the length of the chromosomes involved in each fusion are important factors for the determination of the orientation. Second, chiasmata localization, which in turn determines effective inter-centromeric distance, may be central. A high positive correlation between proximal chiasma frequency and non-disjunctional orientation at Prometaphase I and Metaphase I was found. These results are in agreement with the hypothesis that the shorter the inter-centromeric distance the greater is the probability that both centromeres migrate to the same pole. The importance of these results is also discussed in relation to the stability of the polymorphisms in this species.
Similar content being viewed by others
Article PDF
References
Arana, P, Henriques-Gil, N, and Santos, J L. 1987a. Orientation behaviour of interchanges forming chiasmata in interstitial regions: A cytological approach. Heredity, 58, 15–24.
Arana, P, Santos, J L, and Henriques-Gil, N. 1987b. Interference relationships in grasshopper reciprocal translocation heterozygotes. Heredity, 59, 85–93.
Arana, P, Santos, J L, Henriques-Gil, N, and Giraldez, R. 1982. Centromere co-orientation in a spontaneous translocation heterozygote of Euchorthippus pulvinatus gallicus (Acrididae, Orthoptera). Genetica, 58, 81–84.
Arundhati, A, Narasinga Rao, P S R L, and Sybenga, J. 1986. Possible causes of variation in trivalent orientation frequencies in pearl millet and rye. Genetica, 70, 81–87.
Baker, R J, and Bickham, J W. 1986. Speciation by monobrachial centric fusions. Proc Natl Acad Sci USA, 83, 8245–8248.
Bidau, C J. 1986. Geographic distribution of chromosome polymorphism in Dichroplus pratensis Bruner (Melanoplinae, Acrididae) in Argentina. In: Proceedings of the 4th Triennial Meeting of the Pan American Society, pp. 165–166.
Bidau, C J. 1989. Zonas hibridas en ortopteros: el ejemplo de Dichroplus pratensis (Acrididae). In: Proceedings I Congreso Argentino de Entomologia Tucuman, Republica Argentina, (ed.) Sociedad Argentina de Entomologia, pp. 109–124.
Bidau, C J. 1990. The complex Robertsonian system of Dichroplus pratensis (Melanoplinae, Acrididae). II. Effects of the fusion polymorphisms on chiasma frequency and distribution. Heredity, 64, 145–159.
Bidau, C J. 1991. Multivalents resulting from monobrachial homologies within a hybrid zone in Dichroplus pratensis (Acrididae): meiotic orientation and segregation. Heredity, 66, 219–232.
Bidau, C J, Belinco, C, Mirol, P M, and Tosto, D S. 1991. The complex Robertsonian system of Dichroplus pratensis (Melanoplinae, Acrididae). I. Geographic distribution of fusion polymorphisms. Selection, Genetique. Evolution, 23, 353–370.
Bidau, C J, and Gimenez, M D. 1990. Orientación y segregación meióticas en heterocigotas estructurales: un modelo basado en la orientación de Rabl. In: Proceedings XXI Congreso Argentino de Genética, Entre Rios, República Argentina, (ed.) Sociedad Argentina de Genética, pp. 58.
Bidau, C J, and Mirol, P M. 1988. Orientation and segregation of Robertsonian trivalents in Dichroplus pratensis (Melanoplinae, Acrididae). Genome, 30, 947–955.
Cabrero, J, and Camacho, J P M. 1985. A spontaneous interchange heterozygote mosaic in the grasshopper Stauroderus scalaris: interchromosomal chiasma effects. Heredity, 54, 235–243.
Cano, M I, and Santos, J L. 1990. Chiasma frequencies and distributions in gomphocerine grasshoppers: a comparative study between sexes. Heredity, 64, 17–23.
De Boer, P, and Van Beek, M E A B. 1982. Meiosis of T70H translocation trisomic male mice. I. Meiotic configurations and segregation. Chromosoma, 87, 303–313.
Diez, M, and Puertas, M J. 1984. Interchromosome effects on chiasma distribution due to translocations in Locusta migratoria. Genetica, 63, 189–194.
Fussel, C P. 1987. The Rabl orientation: a prelude to synapsis. In: Moens, P. B. ed., Meiosis, Academic Press, New York, pp. 275–299.
John, B. 1987. The orientation behavior of multiple chromosome configurations in acridid grasshoppers. Genome, 29, 292–308.
King, M. 1987. Chromosomal rearrangements, speciation and the theoretical approach. Heredity, 59, 1–6.
Lopez-Fernandez, C, Rufas, J S, Garcia De La Vega, C, and Gosalvez, J. 1984. Cytogenetics studies on Chorthippus jucundus (Fish.) (Orthoptera) III. The meiotic consequences of a spontaneous centric fusion. Genetica, 63, 3–7.
Mirol, P M, and Bidau, C J. 1991. Meiotic behavior of Robert sonian heterozygotes in populations of Dichroplus pratensis (Acrididae) with different fusion frequencies. Genetica, 84, 171–178.
Narasinga Rao, P S R L, and Sybenga, J. 1984. Linear orientation of trivalents and quadrivalents in late metaphase I pollen mother cells of pearl millet. Can J Genet Cytol 26, 506–510.
Parker, J S. 1987. Increased chiasma frequency as a result of chromosome rearrangement. Heredity, 58, 87–94.
Rees, H, and Sun, S. 1965. Chiasma frequency and the disjunction of interchange associations in rye. Chromosoma, 16, 500–510.
Rickards, G K. 1977. Prometaphase I and anaphase I in an interchange heterozygote of Allium triquetrum (Liliaceae). Chromosoma, 64, 1–23.
Rickards, G K. 1983. Orientation behavior of chromosome multiples of interchange (reciprocal translocation) heterozygotes. Ann Rev Genet, 17, 443–498.
Sites, J W, Jr, and Moritz, C. 1987. Chromosomal evolution and speciation revisited. Syst Zool, 36, 153–174.
Sybenga, J. 1975. Meiotic Configurations. Springer-Verlag, Berlin.
Sybenga, J, and Rickards, G K. 1987. The orientation of multivalents at meiotic metaphase I: a workshop report. Genome, 29, 612–620.
Tease, C, and Jones, G H. 1978. Analysis of exchanges in differentially stained meiotic chromosomes of Locusta migratoria after BrdU substitution and FPG staining. I. Crossover exchanges in monochiasmata bivalents. Chromosoma, 69, 163–178.
Tosto, D S, and Bidau, C J. 1991. Distribution of chromosome frequencies within a hybrid zone of Dichroplus pratensis (Melanoplinae, Acrididae). Heredity, 67, 299–307.
White, M J D. 1978. Modes of speciation. W. H. Freeman & Co., San Francisco.
Wise, D, and Rickards, G K. 1977. A quadrivalent studied in living and fixed grasshopper spermatocytes. Chromosoma, 63, 305–315.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Mirol, P., Bidau, C. Proximal chiasmata induce non-disjunctional orientation of Robertsonian trivalents in a grasshopper. Heredity 69, 268–278 (1992). https://doi.org/10.1038/hdy.1992.125
Received:
Issue Date:
DOI: https://doi.org/10.1038/hdy.1992.125