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

Genetics and Molecular Biology

Marcelo De Oliveira Barbosa²  Rubens Rodrigues Da Silva²  Vanessa Carolina De Sena Correia²  Luana Pereira Dos Santos²  Analía Del Valle Garnero¹  Ricardo José Gunski¹ 

[1] ,Universidade Federal do Tocantins Ciências Biológicas Instituto de Biologia e Saúde PúblicaPorto Nacional TO ,Brazil

关键词: cytogenetics;    woodcreepers;    Ag-NOR;    chromosomal inversion;   

DOI  :  10.1590/S1415-47572013000100010

来源: SciELO

【 摘 要 】

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.

【 授权许可】

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