Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: The complex Robertsonian system of Dichroplus pratensis (Melanoplinae, Acrididae). I. Geographic distribution of fusion polymorphisms | . . Département de Génétique Animate BIBLIOTHÈQUE . 09 o7n F- 78352 JOUY EN JOSAS Genet Sei Evol 1991 23 353-370 Elsevier INRA 353 Original article The complex Robertsonian system of Dichroplus pratensis Melanoplinae Acrididae . I. Geographic distribution of fusion polymorphisms CJ Bidau1 c Belinco2 p Mirol3 D Tosto3 1 Univer sidad National de Misiones Departamento de Genética Facultad de Cientias Exactas Quimicas y Naturales Felix de Azara 1552 6 Piso 3300 Posadas Misiones Argentina 2 Biological Sciences Center Dept of Genetics and Cell Biology 1445 Gartner Ave St Paul MN USA 3 Dept Ciencias Biológicas Facultad de Ciencias Exactas y Naturales Universidad de Buenos Aires Laboratorio de Genética 1428 Buenos Aires Argentina Received 20 July 1990 accepted 17 June 1991 Summary A chromosomal survey was performed in Argentine natural populations of the South-American melanopline grasshopper Dichroplus pratensis Bruner Acrididae . The cytogenetic study of samples from different populations revealed the existence of at least 7 distinct Robertsonian translocations which involve the 6 L large autosomes of the 2n 20 ọ 19 cT all-telocentric standard karyotype. Some of the fusions thus share monobrachial homologies. The Robertsonian variation found in D pratensis is discussed in relation to a model of chromosomal evolution for the species in which the changes in recombination patterns produced by the fusions are central. centric fusion polymorphism polytypism grasshopper Resume - Le système robertsonien complexe de Dichroplus pratensis Melanoplinés Acrididés . I. Distribution géographique des polymorphismes de fusion. Une enquête chromosomique a été réalisée sur des populations naturelies de sauterelles mélanoplines Member of the Carrera del Investigador Cientifico y Tecnológico CONICET Correspondence and reprints 354 CJ Bidau et al sud-américaines Dichroplus pratensis Bruner Acrididés . L étude cytogénétique d echan-tillons en provenance de differentes .
