Summary
Pre- and post-diapause embryonic development was described in Myrmeleotettix maculatus in 24 stages up to hatching. The rate of development and mitotic index of 0B, 1B and 2B karyotypes in males and females were compared in the laboratory in material from two disjunct locations. The overall influence of one B chromosome on development does not appear to be major ; however, higher numbers of Bs have a more noticeable effect. The B chromosome quite clearly slows down the early prediapause development of male embryos, and individuals with 2B or 3B chromosomes are on average retarded in the later stages of the post-diapause period prior to hatching. The presence of B chromosomes produces a variety of chromosomally mutant embryos, many of which are arrested prior to diapause and few develop to hatching. The results are discussed in relation to the maintenance of the B chromosome polymorphism in this insect.
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Ayonoadu, U W, and Rees, H. 1968. The regulation of mitosis by B-chromosomes in rye. Exp Cell Res, 52, 284–290.
Barker, J F. 1966. Climatological distribution of a grasshopper supernumerary chromosome. Evolution, 20, 665–667.
Barlow, P W. 1973. In The Cell Cycle in Development and Differentiation, ed. M. Balls and F. S. Billet, pp. 133–165. Cambridge University Press, London.
Harvey, A W. 1977. The expression of supernumerary chromosomes in Myrmeleotettix maculatus (Thunberg) (Acrididae). Ph.D. thesis, University of East Anglia.
Hewitt, G M. 1973a. Variable transmission rates of a B-chromosome in Myrmeloetettix maculatus (Thunb.) (Acrididae: Orthoptera). Chromosoma, 40, 83–106.
Hewitt, G M. 1973b. The integration of supernumerary chromosomes into the Orthopteran genome. Cold Spring Harbor Symp Quant Biol, 38, 183–194.
Hewitt, G M. 1976. Meiotic drive for B-chromosomes in the primary oocytes of Myrmeleotettix maculatus (Orthoptera: Acrididae). Chromosoma, 56, 381–391.
Hewitt, G M, and Brown, F M. 1970. The B-chromosome system of Myrmeleotettix maculatus. V. A steep cline in East Anglia. Heredity, 25, 363–371.
Hewitt, G M, and John, B. 1967. The B-chromosome system of Myrmeleotettix maculatus (Thunb.) III. The statistics. Chromosoma, 21, 140–162.
Hewitt, G M, and John, B. 1970. The B-chromosome system of Myrmeleotettix maculatus (Thunb.). IV. The dynamics. Evolution, 24, 169–180.
Hewitt, G M, and Ruscoe, C N E. 1971. Changes in microclimate correlated with a cline for B-chromosomes in the grasshopper Myrmeleotettix maculatus. J Anim Ecol, 40, 753–765.
John, B, and Hewitt, G M. 1965. The B-chromosome system of Myrmeleotettix maculatus (Thunb.). I. The mechanics. Chromosoma, 16, 548–578.
Jones, R N. 1975. B-chromosome systems in flowering plants and animal species. Int Rev Cytol, 40, 1–100.
Nur, U. 1962. Population studies of supernumerary chromosomes in a mealy bug. Genetics, 47, 1679–1690.
Nur, U. 1969. Mitotic instability leading to an accumulation of B-chromosomes in grasshoppers. Chromosoma, 27, 1–19.
Procunier, W S. 1975. B-chromosomes of Cnephia dacotensis and C. ornithophilia (Diptera: Simuliidae). Can J Zool, 53, 1638–1647.
Robinson, P M. 1973. The ecological genetics of the polymorphism for B-chromosomes in the grasshopper Myrmeleotettix maculatus (Thunb.) (Acrididae: Orthoptera). Ph.D. thesis, University of East Anglia.
Robinson, P M, and Hewitt, G M. 1976. Annual cycles in the incidence of B-chromosomes in the grasshopper Myrmeleotettix maculatus (Acrididae: Orthoptera). Heredity, 36, 399–412.
Snedecor, G W. 1956. Statistical Methods, 5th edition. Iowa State University Press.
Stebbings, A F K, and Hewitt, G M. 1972. The laboratory breeding of British Gompho-cerine grasshoppers (Acrididae: Orthoptera). Acrida, 1, 233–245.
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Hewitt, G., East, T. Effects of B chromosomes on development in grasshopper embryos. Heredity 41, 347–356 (1978). https://doi.org/10.1038/hdy.1978.105
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DOI: https://doi.org/10.1038/hdy.1978.105
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