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Chromosome Painting in Trogon s. surrucura (Aves, Trogoniformes) Reveals a Karyotype Derived by Chromosomal Fissions, Fusions, and Inversions.
Degrandi, Tiago M; Del Valle Garnero, Analía; O'Brien, Patricia C M; Ferguson-Smith, Malcolm A; Kretschmer, Rafael; de Oliveira, Edivaldo H C; Gunski, Ricardo J.
Afiliação
  • Degrandi TM; Programa de Pós Graduação em Genética, Laboratório de Citogenética e Genética da Conservação Animal, Universidade Federal do Paraná, Curitiba, Brazil.
Cytogenet Genome Res ; 151(4): 208-215, 2017.
Article em En | MEDLINE | ID: mdl-28501862
Trogons are forest birds with a wide distribution, being found in Africa, Asia, and America, and are included in the order Trogoniformes, family Trogonidae. Phylogenetic studies using molecular data have not been able to determine the phylogenetic relationship among the different genera of trogons. So far, no cytogenetic data for these birds exist. Hence, the aim of this study was to characterize the karyotype of Trogon surrucura surrucura by means of classical and molecular cytogenetics. We found a diploid chromosome number of 2n = 82, similar to most birds, with several derived features compared to chicken and the putative ancestral avian karyotype. T. s. surrucura showed 3 pairs of microchromosomes bearing 18S rDNA clusters. The Z and W sex chromosomes were of similar size but could readily be identified by morphological differences. Using chromosome painting with whole chromosome probes from Gallus gallus and Leucopternis albicollis, we found that the chromosomes homologous to chicken chromosomes 2 and 5 correspond to 2 different pairs in T. s. surrucura and L. albicollis, due to the occurrence of centric fissions. Paracentric inversions were detected in the segment homologous to chicken chromosome 1q, and we confirmed the recurrence of breakpoints when our results were compared to other species of birds already analyzed by FISH or by in silico genome assembly.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Aves / Rearranjo Gênico / Inversão Cromossômica Limite: Animals Idioma: En Revista: Cytogenet Genome Res Assunto da revista: GENETICA Ano de publicação: 2017 Tipo de documento: Article País de afiliação: Brasil País de publicação: Suíça

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Aves / Rearranjo Gênico / Inversão Cromossômica Limite: Animals Idioma: En Revista: Cytogenet Genome Res Assunto da revista: GENETICA Ano de publicação: 2017 Tipo de documento: Article País de afiliação: Brasil País de publicação: Suíça