Este artículo es de Acceso Abierto y puede ser descargado en su versión final desde nuestro repositorio
Consulte el artículo en la página del editor
Consulte la política de Acceso Abierto del editor


Grasshoppers have been much less studied than Drosophila when it comes to inversion polymorphisms, despite the occurrence of this rearrangement in several species of grasshoppers. In the present study, 354 males from a natural population of the New World species Trimerotropis pallidipennis, polymorphic for 6 pericentric inversions in 4 chromosome pairs, were sampled at the beginning and at the end of the adult life span. This sampling, along with the fact that generations in this grasshopper are annual and discrete, was done to detect differential adult male longevity among karyotypes and departures from formal null models, such as gametic phase equilibrium. These methods allow the detection of natural selection taking place in the wild. The comparison between age classes showed that some inversions were significantly more frequent in one sample, thus revealing the operation of natural selection. Gametic phase disequilibrium was detected in the sample of aged males but not in the sample of young ones. Furthermore, here we aim to detect the phenotypic targets of longevity selection by examining morphometric characters, in order to have a clearer idea of the relation between inversions and natural selection in this species. These results corroborate previous studies that suggested that the inversions are involved in natural selection, and an adaptive model has been proposed for the pattern of inversion frequencies throughout several populations at different altitudes and latitudes.


Documento: Artículo
Título:Inversion polymorphisms and natural selection in Trimerotropis pallidipennis (Orthoptera)
Autor:Colombo, P.C.
Filiación:Depto. Cs. Biológicas, FCEN, UBA, 1428 Ciudad Univ., Buenos Aires, Argentina
Palabras clave:age; altitude; article; chromosome pairing; controlled study; gamete; gene frequency; gene rearrangement; genetic polymorphism; grasshopper; karyotype; latitude; lifespan; longevity; male; morphometrics; natural population; natural selection; nonhuman; Orthoptera; pericentric chromosome inversion; phenotype; population genetics; species distribution; species identification; Trimerotropis pallidipennis; Animals; Chromosome Mapping; Grasshoppers; Karyotyping; Linkage Disequilibrium; Male; Orthoptera; Phenotype; Polymorphism, Genetic; Regression Analysis; Time Factors; Insecta; Orthoptera; Trimerotropis
Página de inicio:68
Página de fin:74
Título revista:Hereditas
Título revista abreviado:Hereditas


  • Colombo, P.C., Chromosome polymorphisms and natural selection in Leptysma argentina (Orthoptera). II. Gametic phase disequilibrium and differential adult male viability (1993) Heredity, 71, pp. 295-299
  • Colombo, P.C., Chromosome inversion polymorphisms influence morphological traits in Trimerotropis pallidipennis (Orthoptera) (2002) Genetica, 114, pp. 247-252
  • Colombo, P.C., Confalonieri, V.A., Adaptive pattern of inversion polymorphism in Trimerotropis pallidipennis. Correlation with environmental variables: An overall view (1996) Hereditas, 125, pp. 289-296
  • Confalonieri, V.A., Inversion polymorphism and natural selection in Trimerotropis pallidipennis: Correlations with geographical variables (1994) Hereditas, 121, pp. 79-86
  • Confalonieri, V.A., Colombo, P.C., Inversion polymorphism in Trimerotropis pallidipennis (Orthoptera): Clinical variation along an altitudinal gradient (1989) Heredity, 62, pp. 107-112
  • Endler, J.A., (1986) Natural Selection in the Wild., , Princeton Univ. Press
  • Goñi, B., De Vaio, E., Beltrami, M., Geographic patterns of chromosomal variation in populations of the grasshopper (Trimerotropis pallidipennis) from southern Argentina (1985) Can. J. Genet. Cytol., 27, pp. 259-271
  • Hartl, D.L., (1989) Principles of Population Genetics, 2nd edn., , Sinauer Associates Inc
  • John, B., The role of chromosome change in the evolution of orthopteroid insects (1984) Chromosomes in the Evolution of Eukaryotic Groups., 1, pp. 1-114. , In: Sharma, A. K. and Sharma, A. M. (eds); C.R.C. Press
  • (1992) Drosophila Inversion Polymorphism., , Krimbas, C. B. and Powell J. R. (eds); CRC Press
  • Lewontin, R.C., White, M.J.D., Interaction between inversion polymorphisms of two chromosome pairs in the grasshopper Moraba scurra (1960) Evolution, 14, pp. 116-129
  • Mousseau, T.A., Roff, D.A., Adaptation to seasonality in a cricket: Patterns of phenotypic and genotypic variation in body size and diapause expression along a cline in season length (1989) Evolution, 43, pp. 1483-1496
  • Orr, M.R., Life-history adaptation and reproductive isolation in a grasshopper hybrid zone (1996) Evolution, 50, pp. 704-716
  • Powell, J.R., (1997) Progress and Prospects in Evolutionary Biology. The Drosophila Model., , Oxford Univ. Press
  • Raymond, M., Rousset, F., GENEPOP (version 1.2): Population genetics software for exact tests and ecumenicism (1995) J. Heredity, 86, pp. 248-249
  • Remis, M.I., Pensel, S.M., Vilardi, J.C., Multivariate analysis of male mating success on morphometric traits and chromosome dosage in the grasshopper Sinipta dalmani (2000) Heredity, 84, pp. 548-554
  • Ruiz, A., Fontdevila, A., Santos, M., The evolutionary history of Drosophila buzzatti. VIII. Evidence for endocyclic selection acting on the inversion polymorphism in a natural population (1986) Evolution, 40, pp. 740-755
  • Telfer, M.G., Hassall, M., Ecotypic differentiation in the grasshopper Chorthippus brunneus: Life history varies in relation to climate (1999) Oecologia, 121, pp. 245-254
  • Vaio, E., De Goñi, B., Rey, C., Chromosome polymorphisms in populations of the grasshopper Trimerotropis pallidipennis from southern Argentina (1979) Chromosoma, 71, pp. 371-386
  • White, M.J.D., Lewontin, R.C., Andrew, L.E., Cytogenetics of the grasshopper Moraba scurra. VII. Geographic variation of adaptive properties of inversions (1963) Evolution, 17, pp. 147-1162
  • Willot, S.J., Hassall, M., Life-history responses of British grasshoppers (Orthoptera. Acridadae) to temperature change (1998) Funct. Ecol., 12, pp. 232-241


---------- APA ----------
(2003) . Inversion polymorphisms and natural selection in Trimerotropis pallidipennis (Orthoptera). Hereditas, 139(1), 68-74.
---------- CHICAGO ----------
Colombo, P.C. "Inversion polymorphisms and natural selection in Trimerotropis pallidipennis (Orthoptera)" . Hereditas 139, no. 1 (2003) : 68-74.
---------- MLA ----------
Colombo, P.C. "Inversion polymorphisms and natural selection in Trimerotropis pallidipennis (Orthoptera)" . Hereditas, vol. 139, no. 1, 2003, pp. 68-74.
---------- VANCOUVER ----------
Colombo, P.C. Inversion polymorphisms and natural selection in Trimerotropis pallidipennis (Orthoptera). Hereditas. 2003;139(1):68-74.