Nucleolar organizer regions in Sittasomus griseicapillus and Lepidocolaptes angustirostris (Aves, Dendrocolaptidae): evidence of a chromosome inversion



Título del documento: Nucleolar organizer regions in Sittasomus griseicapillus and Lepidocolaptes angustirostris (Aves, Dendrocolaptidae): evidence of a chromosome inversion
Revista: Genetics and molecular biology
Base de datos: PERIÓDICA
Número de sistema: 000356564
ISSN: 1415-4757
Autores: 1
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1
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2
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Instituciones: 1Universidade Federal do Tocantins, Instituto de Biologia e Saude Publica, Porto Nacional, Tocantins. Brasil
2Universidade Federal do Pampa, Sao Gabriel, Rio Grande do Sul. Brasil
Año:
Periodo: Mar
Volumen: 36
Número: 1
Paginación: 70-73
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental, aplicado
Resumen en inglés Cytogenetic studies in birds are still scarce compared to other vertebrates. Woodcreepers (Dendrocolaptidae) are part of a highly specialized group within the Suboscines of the New World. They are forest birds exclusive to the Neotropical region and similar to woodpeckers, at a comparable evolutionary stage. This paper describes for the first time the karyotypes of the Olivaceous and the Narrow-billed Woodcreeper using conventional staining with Giemsa and silver nitrate staining of the nucleolar organizer regions (Ag-NORs). Metaphases were obtained by fibular bone marrow culture. The chromosome number of the Olivaceous Woodcreeper was 2n = 82 and of the Narrow-billed Woodcreeper, 2n = 82. Ag-NORs in the largest macrochromosome pair and evidence of a chromosome inversion are described herein for the first time for this group
Disciplinas: Biología
Palabras clave: Aves,
Genética,
Aves silvestres,
Citogenética,
Regiones organizadoras del nucleolo (NOR),
Inversión de cromosomas,
Sittasomus griseicapillus,
Lepidocolaptes angustirostris,
Dendrocolaptidae
Keyword: Biology,
Birds,
Genetics,
Wild birds,
Cytogenetics,
Nucleolus organizer regions (NOR),
Chromosome inversion,
Sittasomus griseicapillus,
Lepidocolaptes angustirostris,
Dendrocolaptidae
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