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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
05/06/2008 |
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Data da última atualização: |
03/09/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MOURA, R. de C. de; MELO, N. F. de; SOUZA, M. J. de. |
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Afiliação: |
Rita de Cássia de Moura, UFPE; NATONIEL FRANKLIN DE MELO, CPATSA; Maria José de Souza, UFPE. |
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Título: |
High Levels of Chromosomal Differentiation in Euchroma gigantea L. 1735 (Coleoptera, Buprestidae) |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Genetics and Molecular Biology, Ribeirão Preto, v. 31, n. 2, p. 431-437, 2008. |
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Idioma: |
Inglês |
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Conteúdo: |
Euchroma giganteawas karyotypically studied using conventional staining, C-banding, silver nitrate staining and ribosomal fluorescent in situ hybridization (rDNA FISH). Broad wide autosomal polymorphism and a complex sex determination system were found in this beetle. Karyotype complements ranging from 2n = 32, X1X2X3Y1Y2Y3 to 2n = 36,X1X2X3Y1Y2Y3 were detected in the sample analyzed. Punctiform suernumerary chromosomes were present in the different karyotypes. The karyotypic evolution of Brazilian E. giganteamay have taken two directions, reduction in the diploid number of 2n = 36 to 24 through centric fusions or 2n = 24 to 36 due to chromosomal fissions. In addition, pericentric inversions were also involved. The complex multiple sex mechanism of this species seems to be old and well established since it is found in specimens from different populations. Small pericentromeric blocks of constitutive heterochromatin were located on the autosomes and terminal blocks were also found on some small pairs. The sex chromosomes showed larger constitutive heterochromatin blocks. Silver nitrate staining during prophase I of meiosis showed labeling of the sex chromosome chain. However, the rDNA sites could only be precisely determined by FISH, which permitted the identification of these ribosomal sites on chromosomes X1 and X2 of this species. |
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Palavras-Chave: |
Cromossomo; DNAr; RON. |
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Thesagro: |
Coleóptero. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CPATSA/37886/1/OPB1787.pdf
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Marc: |
LEADER 01918naa a2200193 a 4500
001 1162807
005 2018-09-03
008 2008 bl uuuu u00u1 u #d
100 1 $aMOURA, R. de C. de
245 $aHigh Levels of Chromosomal Differentiation in Euchroma gigantea L. 1735 (Coleoptera, Buprestidae)
260 $c2008
520 $aEuchroma giganteawas karyotypically studied using conventional staining, C-banding, silver nitrate staining and ribosomal fluorescent in situ hybridization (rDNA FISH). Broad wide autosomal polymorphism and a complex sex determination system were found in this beetle. Karyotype complements ranging from 2n = 32, X1X2X3Y1Y2Y3 to 2n = 36,X1X2X3Y1Y2Y3 were detected in the sample analyzed. Punctiform suernumerary chromosomes were present in the different karyotypes. The karyotypic evolution of Brazilian E. giganteamay have taken two directions, reduction in the diploid number of 2n = 36 to 24 through centric fusions or 2n = 24 to 36 due to chromosomal fissions. In addition, pericentric inversions were also involved. The complex multiple sex mechanism of this species seems to be old and well established since it is found in specimens from different populations. Small pericentromeric blocks of constitutive heterochromatin were located on the autosomes and terminal blocks were also found on some small pairs. The sex chromosomes showed larger constitutive heterochromatin blocks. Silver nitrate staining during prophase I of meiosis showed labeling of the sex chromosome chain. However, the rDNA sites could only be precisely determined by FISH, which permitted the identification of these ribosomal sites on chromosomes X1 and X2 of this species.
650 $aColeóptero
653 $aCromossomo
653 $aDNAr
653 $aRON
700 1 $aMELO, N. F. de
700 1 $aSOUZA, M. J. de
773 $tGenetics and Molecular Biology, Ribeirão Preto$gv. 31, n. 2, p. 431-437, 2008.
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