Abstract
The segregation of a B chromosome from the X chromosome was studied in male meiosis in two psyllid species, Rhinocola aceris (L.) and Psylla foersteri (Flor.) (Psylloidea, Homoptera). The frequency of segregation was determined from cells at metaphase II. In R. aceris, the B chromosome was mitotically stable and segregated quite regularly from the X chromosome in four geographically distant populations, while it showed less regular, but preferential segregation in one population. This was attributed to the presence of B chromosome variants that differ in their ability to interact with the X chromosome in segregation. In P. foersteri, the B chromosome was mitotically unstable and segregated preferentially from the X chromosome in spermatocyte cysts, which displayed one B chromosome in every cell. Behaviour of the B chromosome and X chromosome univalents during meiotic prophase and at metaphase I in R. aceris, and during anaphase I in P. foersteri suggested that the regular segregation resulted from the incorporation of B chromosomes in achiasmate segregation mechanisms with the X chromosome in the place occupied by the Y chromosome in species with XY system. The regular segregation of a B chromosome from the X chromosome may obscure the distinction of a B chromosome and an achiasmate Y chromosome in some cases.
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References
Grell, R.F., 1976. Distributive pairing, pp. 435–486 in Genetics and Biology of Drosophila. Vol. 1A, edited by M. Ashburner and E. Novitski. Academic Press, London.
Hawley, R.S. & W.E. Theurkauf, 1993. Requiem for distributive segregation: achiasmate segregation in Drosophila females. Trends Genet. 9: 310–317.
Hawley, R.S., K.S. McKim & T. Arbel, 1993. Meiotic segregation in Drosophila melanogaster females: molecules, mechanisms, and myths. Annu. Rev. Genet. 27: 271–317.
Henderson, S.A., 1961. The chromosomes of the British Tetrigidae (Orthoptera). Chromosoma 12: 553–572.
Jackson, W.D. & D.S. Cheung, 1967. Distortional meiotic segregation of supernumerary chromosomes producing differential frequencies in the sexes in the short-horned grasshopper Phaulacridium vittatum. Chromosoma 23: 24–37.
John, B., 1990. Meiosis. The University Press, Cambridge.
John, B. & M. Freeman, 1974. B-chromosome behaviour in Phaulacridium vittatum. Chromosoma 46: 181–195.
John, B. & M. Freeman, 1975. The cytogenetic structure of tasmanian populations of Phaulacridium vittatum. Chromosoma 53: 283–293.
John, B. & G.M. Hewitt, 1965a. The B-chromosome system of Myrmeleotettix maculatus (Thunb.). I. The mechanics. Chromosoma 16: 548–578.
John, B. & G.M. Hewitt, 1965b. The B-chromosome system of Myrmeleotettix maculatus (Thunb.). II. The statistics. Chromosoma 17: 121–138.
Jones, R.N. & H. Rees, 1982. B Chromosomes. Academic Press, London.
Kirillova, V.I. & V.G. Kuznetsova, 1990. B-chromosomes in cicad Javesella pellucida Fabr. and other Delphacidae (Homoptera, Cicadinea). Citologya 32: 282–289. (In Russian)
Kuznetsova, V.G., 1986. Phylogenetic analysis of chromosome variability and karyosystematics of cicadina family Dictyopharidae (Homoptera, Auchenorryncha). Entomol. Rev. 65: 88–106.
Kuznetsova, V.G., S. Nokkala & A. Maryańska-Nadachowska, 1997. Karyotypes, sex chromosome systems, and male meiosis in Finnish psyllids (Homoptera: Psylloidea). Folia Biol. (Krakow) 45: 143–152.
Lopez-Leon, M.D., J. Cabrero & J.P.M. Camacho, 1991. Distributive pairing in the grasshopper Chorthippus binotatus. Genome 34: 139–143.
Lopez-Leon, M.D., J. Cabrero & J.P.M. Camacho 1996. Achiasmate segregation of X and B univalents in males of the grasshopper Eyprepocnemis plorans is independent of previous association. Chromosome Res. 4: 43–48.
Matcharashvili, I.D. & V.G. Kuznetsova 1997. Karyotypes, spermatogenesis, and morphology of the internal reproductive system in males of some species of psyllids (Homoptera, Psylloidea) of the Fauna of Georgia. I. Karyotypes and spermatogonial meiosis. Entomol. Rev. 77: 12–20.
Maryańska-Nadachowska, A., 1999. B-chromosome polymorphism in Rhinocola aceris (L.) (Psylloidea, Homoptera). Folia Biol. (Krakow) 47: 115–122.
Maryańska-Nadachowska, A., V.G. Kuznetsova & E. Warchalowska-Śliwa, 1992. Karyotypes of Psyllina (Homoptera). I. New data and check-list. Folia Biol. (Krakow) 40: 15–25.
Maryańska-Nadachowska, A., V.G. Kuznetsova, C.H.-T. Yang & I.H. Woudstra, 1996. New data on karyotypes and the number of testicular follicles in the psyllid families Aphalaridae, Psyllidae, Carsidaridae, and Triozidae (Homoptera, Psylloidea). Caryologia 49: 279–285.
Nokkala, S., 1986a. The meiotic behaviour of B-chromosomes and their effect on the segregation of sex chromosomes in males of Hemerobius marginatus L. (Hemerobidae, Neuroptera). Hereditas 105: 221–227.
Nokkala, S., 1986b. The nonsignificance of distance pairing for the regular segregation of sex chromosomes in Hemerobius marginatus L. (Hemerobidae, Neuroptera). Hereditas 105: 135–139.
Nokkala, S., 1986c. The mechanism behind the regular segregation of the m-chromosomes in Coreus marginatus L. (Coreidae, Hemiptera). Hereditas 105: 73–85.
Puro, J. & S. Nokkala, 1977. Meiotic segregation of chromosomes in Drosophila melanogaster oocytes: a cytological approach. Chromosoma 63: 273–286.
Rowe, H.J. & M. Westerman, 1974. Population cytology of the genus Phaulacridium. I. Phaulacridium vittatum (Sjöst): Australian mainland populations. Chromosoma 46: 197–205.
Smith, S.G. & N. Virkki, 1978. Animal Cytogenetics 3. Insecta 5. Coleoptera. Gebrüder Borntraeger, Berlin-Stuttgart.
Suomalainen, E. & O. Halkka, 1963. The mode of meiosis in the Psyllina. Chromosoma 14: 498–510.
Webb, G.C., 1976. Chromosome organization in the Australian plague locust Chorcoicetes terminifera. 1. Banding relationships of the normal and supernumerary chromosomes. Chromosoma 55: 229–246.
Westerman, M. & P.G. Fontana, 1973. Polymorphism for extra heterochromatin in Phaulacridium marginale. Heredity 31: 223–229.
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Nokkala, S., Kuznetsova, V. & Maryańska-Nadachowska, A. Achiasmate Segregation of a B Chromosome from the X Chromosome in Two Species of Psyllids (Psylloidea, Homoptera). Genetica 108, 181–189 (2000). https://doi.org/10.1023/A:1004146118610
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DOI: https://doi.org/10.1023/A:1004146118610