期刊
GENETICS AND MOLECULAR BIOLOGY
卷 33, 期 1, 页码 57-61出版社
SOC BRASIL GENETICA
DOI: 10.1590/S1415-47572010005000009
关键词
Amphisbaena ridleyi; karyotype; Fernando de Noronha; Ag-NOR; FISH with telomeric probes
资金
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP)
- CNPq
- CAPES
The karyotype of Amphisbaena ridleyi, an endemic species of the archipelago of Fernando de Noronha, in State of Pernambuco, Brazil, is described after conventional staining, Ag-NOR impregnation and fluorescence in situ hybridization (FISH) with a telomeric probe. The diploid number is 46, with nine pairs of macrochromosomes (three metacentrics, four subtelocentrics and two acrocentrics) and 14 pairs of microchromosomes. The Ag-NOR is located in the telomeric region of the long arm of metacentric chromosome 2 and FISH revealed signals only in the telomeric region of all chromosomes. Further cytogenetic data on other amphisbaenians as well as a robust phylogenetic hypothesis of this clade is needed in order to understand the evolutionary changes on amphisbaenian karyotypes.
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