title: Chromosomal evolution in the Drosophila cardini group (Diptera: Drosophilidae): photomaps and inversion analysis.
abstract: Detailed chromosome photomaps are the first step to develop further chromosomal analysis to study the evolution of the genetic architecture in any set of species, considering that chromosomal rearrangements, such as inversions, are common features of genome evolution. In this report, we analyzed inversion polymorphisms in 25 different populations belonging to six neotropical species in the cardini group: Drosophila cardini, D. cardinoides, D. neocardini, D. neomorpha, D. parthenogenetica and D. polymorpha. Furthermore, we present the first reference photomaps for the Neotropical D. cardini and D. parthenogenetica and improved photomaps for D. cardinoides, D. neocardini and D. polymorpha. We found 19 new inversions for these species. An exhaustive pairwise comparison of the polytene chromosomes was conducted for the six species in order to understand evolutionary patterns of their chromosomes.
authors.affiliation: Departamento de Ecologia, Zoologia e Genética, Instituto de Biologia, Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul, CEP 96001-970, Brazil, jlncdr@gmail.com.
authors.forename: Juliana
authors.initials: J
authors.lastname: Cordeiro
authors.forename: Daniela Cristina
authors.initials: DC
authors.lastname: De Toni
authors.forename: Gisele de Souza
authors.initials: Gde S
authors.lastname: da Silva
authors.forename: Vera Lucia da Silva
authors.initials: VL
authors.lastname: Valente
mesh_terms: D000818:Animals; D007446:Chromosome Inversion; D002874:Chromosome Mapping / Q000379:methods*; D059006:Chromosomes, Insect / Q000235:genetics*; D004330:Drosophila / Q000145:classification / Q000235:genetics*; D019143:Evolution, Molecular; D005260:Female; D007814:Larva / Q000235:genetics; D008677:Metaphase / Q000235:genetics; D059007:Polytene Chromosomes / Q000235:genetics; D013045:Species Specificity; D026801:Synteny