Abstract
The grasshopper Eyprepocnemis plorans harbours an extremely widespread polymorphism for supernumerary (B) chromosomes, which is found in almost all circum-Mediterranean and Caucasian populations hitherto analysed. B chromosomes in this species have been shown to evolve through several stages of parasitic and near-neutral nature, presumably because of an arms race between the standard (A) and B chromosomes. This intragenomic conflict can either be solved with the extinction of the neutralised B chromosome or, more interestingly, with the replacement of the neutralised B by a mutant version being parasitic again and thus prolonging B chromosome life. This species thus provides a complete view of the long-term life-cycle of parasitic B chromosomes.
Similar content being viewed by others
References
Bakkali, 2001. Evolución de los cromosomas B del saltamontes Eyprepocnemis plorans enMarrueccos. PhD Thesis, Universidad de Granada, Granada, Spain.
Bakkali, M., F. Perfectti & J.P.M. Camacho, 2002. The Bchromosome polymorphism of the grasshopper Eyprepocnemis plorans in North Africa. II. Parasitic and neutralized B1 chromosomes. Heredity 88: 14–18.
Bakkali, M., J. Cabrero, M.D. López-León, F. Perfectti & J.P.M. Camacho, 1999. The B chromosome polymorphism of the grasshopper Eyprepocnemis plorans in North Africa. I. B variants and frequency. Heredity 83: 428–434.
Bell, G. & A. Burt, 1990. B-chromosomes: germ-line parasites which induce changes in host recombination. Parasitology 100: S19-S26.
Bugrov, A., E. Warchalowska-Sliwa & L. Vysotskaya, 1999. Karyotypic features of Eyprepocnemidinae grasshoppers from Russia and Central Asia with reference to the B chromosomes in Eyprepocnemis plorans (Charp.). Folia biol. (Kraków) 47: 97–104.
Cabrero, J., J.D. Alché & J.P.M. Camacho, 1987. Effects of B chromosomes of the grasshopper Eyprepocnemis plorans on nucleolar organiser regions activity. Activation of a latent NOR on a B chromosome fused to an autosome. Genome 29: 116–121.
Cabrero, J., M.D. López-León, R. Gómez, A.J. Castro, A. Martín-Alganza & J.P.M. Camacho, 1997. Geographical distribution of B chromosomes in the grasshopper Eyprepocnemis plorans, along a river basin, is mainly shaped by non-selective historical events. Chromosome Res. 5, 194–198.
Cabrero, J., M.D. López-León, M. Bakkali & J.P.M. Camacho, 1999. Common origin of B chromosome variants in the grasshopper Eyprepocnemis plorans. Heredity 83: 435–439.
Camacho, J.P.M., M. Bakkali, J.M. Corral, J. Cabrero, M.D. López-León, I. Aranda, A. Martín-Alganza & F. Perfectti, 2002. Host recombination is dependent on the degree of parasitism. Proc. R. Soc. Lond. Ser. B 269: 2173–2177.
Camacho, J.P.M., A.R. Carballo & J. Cabrero, 1980. The B chromosome system of the grasshopper Eyprepocnemis plorans sub. plorans (Charpentier). Chromosoma 80: 163–166.
Camacho, J.P.M., T.F. Sharbel & L.W. Beukeboom, 2000. B chromosome evolution. Phil. Trans. R. Soc. Lond. B 355: 163–178.
Camacho, J.P.M., M.W. Shaw, M.D. López-León, M.C. Pardo & J. Cabrero, 1997. Population dynamics of a selfish B chromosome neutralized by the standard genome in the grasshopper Eyprepocnemis plorans. Am. Nat. 149: 1030–1050.
Cano, M.I., N. Henriques-Gil, P. Arana & J.L. Santos, 1986. The relationship between chiasma frequency and bivalent length: effects of genotype and supernumerary chromosomes. Heredity 56: 305–310.
Cano, M.I., G.H. Jones & J.L. Santos, 1987. Sex differences in chiasma frequency and distribution in natural populations of Eyprepocnemis plorans containing B chromosomes. Heredity 59: 237–243.
Chao, L., K.A. Hanley, C.L. Burch, C. Dahlberg & P.E. Turner, 2000. Kin selection and parasite evolution: higher and lower virulence with hard and soft selection. Quart. Rev. Biol. 75: 261–275.
Dirsh, V.M., 1958. Revision of the genus Eyprepocnemis Fieber, 1853 (Orthoptera:Acridoidea). Proc. Roy. Ent. Soc. Lond. B 27: 33–45.
Frank, S.A., 2000. Polymorphism of attack and defence. Trends Ecol. Evol. 15: 167–171.
Henriques-Gil, N. & P. Arana, 1990. Origin and substitution of B chromosomes in the grasshopper Eyprepocnemis plorans. Evolution 44: 747–753.
Henriques-Gil, N., J.L. Santos & P. Arana, 1984. Evolution of a complex polymorphism in the grasshopper Eyprepocnemis plorans. Chromosoma 89: 290–293.
Henriques-Gil, N., J.L. Santos & R. Giráldez, 1982. Genotypedependent effect of B-chromosomes on chiasma frequency in Eyprepocnemis plorans (Acrididae: Orthoptera). Genetica 59: 223–227.
Herrera, J.A., M.D. López-León, J. Cabrero, M.W. Shaw & J.P.M. Camacho, 1996. Evidence for B chromosome drive suppression in the grasshopper Eyprepocnemis plorans. Heredity 76: 633–639.
Hiatt, E.N., E.K. Kentner & K. Dawe, 2002. Independently regulated neocentromere activity of two classes of tandem repeat arrays. The Plant Cell 14: 407–420.
John, B. & K.R. Lewis, 1965. Genetic speciation in the grasshopper Eyprepocnemis plorans. Chromosoma 16: 548–578.
Johnson, N.A., 1997. Selfish genetic elements: long-range dynamics predicted by non-equilibrium models. Trends Ecol. Evol. 12: 376–378.
Jones, R.N., 1985. Are B chromosomes selfish? pp. 397–425 in The Evolution of Genome Size, edited by T. Cavalier-Smith, Wiley, London.
Jones, R.N. & H. Rees, 1982. B Chromosomes. Academic Press, New York.
Lehmann, T., 1993. Ectoparasites: direct impact on host fitness. Parasitol. Today 9: 8–13.
López-Fernández, C., R. Mezzanotte & J. Gosálvez, 1992. Autosomal, sex and B chromosomes in Eyprepocnemis plorans (Orthoptera) viewed with restriction endonuclease in situ digestion. Heredity 68: 365–372.
López-León, M.D., J. Cabrero & J.P.M. Camacho, 1991. A nucleolus organizer region in a B chromosome inactivated by DNA methylation. Chromosoma 100: 134–138.
López-León, M.D., J. Cabrero & J.P.M. Camacho, 1995. Changes in DNA methylation during development in the B chromosome NOR of the grasshopper Eyprepocnemis plorans. Heredity 74: 296–302.
López-León, M.D., J. Cabrero, J.P.M. Camacho, M.I. Cano & J.L. Santos, 1992a. A widespread B chromosome polymorphism maintained without apparent drive. Evolution 46: 529–539.
López-León, M.D., M.C. Pardo, J. Cabrero & J.P.M. Camacho, 1992b. Random mating and absence of sexual selection for B chromosomes in two natural populations of the grasshopper Eyprepocnemis plorans. Heredity 69: 558–561.
López-León, M.D., J. Cabrero, M.C. Pardo, E. Viseras, J.P.M. Camacho & J.L. Santos, 1993. Generating high variability of B chromosomes in the grasshopper Eyprepocnemis plorans. Heredity 71: 352–362.
López-León, M.D., N. Neves, T. Schwarzacher, T.S. Heslop-Harrison, G.M. Hewitt & J.P.M. Camacho, 1994. Possible origin of a B chromosome deduced from its DNA composition using double FISH technique. Chromosome Res. 2: 87–92.
López-León, M.D., P. Vázquez, G.M. Hewitt & J.P.M. Camacho, 1995. Cloning and sequence analysis of an extremely homogeneous tandemly repeated DNA in the grasshopper Eyprepocnemis plorans. Heredity 75: 370–375.
Martín-Alganza, A., J. Cabrero, M.D. López-León, F. Perfectti & J.P.M. Camacho, 1997. Supernumerary heterochromatin does not affect several morphological and physiological traits in the grasshopper Eyprepocnemis plorans. Hereditas 126: 187–189.
Muñoz, E., F. Perfectti, A. Martín-Alganza & J.P.M. Camacho, 1998. Parallel effect of a B chromosome and a mite decreasing female fitness in the grasshopper Eyprepocnemis plorans. Proc. R. Soc. Lond. Ser. B. 265: 1903–1909.
Nur, U., 1977 Maintenance of a 'parasitic' B chromosome in the grasshopper Melanoplus femur-rubrum. Genetics 87: 499–512.
Östergren, G., 1945. Parasitic nature of extra fragment chromosomes. Bot. Notiser 2: 157–163.
Rausher, M.D., 2001. Co-evolution and plant resistance to natural enemies. Nature 411: 857–864.
Shaw, M.W., 1984. The population genetics of the B-chromosome polymorphism of Myrmeleotettix maculatus (Orthoptera: Acridae). Biol. J. Linn. Soc. 23: 77–100.
Sorci, G., A.P. Møller & T. Boulinier, 1997. Genetics of host-parasite interactions. Trends Ecol. Evol. 12: 196–200.
Stouthamer, R., M. van Tilborg, J.H. de Jong, L. Nunney & R.F. Luck, 2001. Selfish element maintains sex in natural populations of a parasitoid wasp. Proc. R. Soc. Lond. B. 268: 617–622.
Werren, J.H., 1991. The paternal-sex-ratio chromosome of Nasonia. Am. Nat. 137: 392–402.
Werren, J.H. & R. Stouthamer. PRS (Paternal Sex Ratio) chromosomes: the ultimate selfish genetic element. Genetica, this issue. White, M.J.D., 1973. Animal Cytology and Evolution. 3rd edn. Cambridge University Press, London.
Wilson, E.B., 1907. The supernumerary chromosomes of Hemiptera. Science 26: 870–871.
Zurita, S., J. Cabrero, M.D. López-León & J.P.M. Camacho, 1998. Polymorphism regeneration for a neutralized selfish B chromosome. Evolution 52: 274–277.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Camacho, J., Cabrero, J., López-León, M. et al. The B Chromosomes of the Grasshopper Eyprepocnemis Plorans and the Intragenomic Conflict. Genetica 117, 77–84 (2003). https://doi.org/10.1023/A:1022311320394
Issue Date:
DOI: https://doi.org/10.1023/A:1022311320394