Departamento de Zootecnia, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, MG Brazil.
Genet Mol Biol. 2009 Jul;32(3):601-7. doi: 10.1590/S1415-47572009005000060. Epub 2009 Sep 1.
A molecular phylogenetic analysis based on mitochondrial 16S ribosomal DNA and Control Region sequences from native and introduced populations was undertaken, in order to characterize the introduction of Cichla (peacock bass or tucunaré) species in Brazil. Mitochondrial DNA haplotypes found in introduced fish from Minas Gerais state (southeastern Brazil) clustered only with those from native species of the Tocantins River (Cichla piquiti and C. kelberi), thereby suggesting a single or, at most, few translocation acts in this area, even though with fish from the same source-population. Our study contributes to an understanding of the introduction of Cichla in regions of Brazil outside the Amazon basin, and adds phylogenetic data to the recently describe Cichla species, endemic from the Tocantins-Araguaia basin.
为了研究彩鲷属（孔雀鲈或图库尔鱼）在巴西的引入情况，我们对来自本地和引入种群的线粒体 16S 核糖体 DNA 和控制区序列进行了分子系统发育分析。在米纳斯吉拉斯州（巴西东南部）发现的引入鱼类的线粒体 DNA 单倍型仅与托坎廷斯河的本地种（彩鲷属的 C. piquiti 和 C. kelberi）聚在一起，这表明在该地区只有一次或最多几次的转移行为，即使是来自同一来源种群的鱼类也是如此。我们的研究有助于了解彩鲷属在亚马逊河流域以外的巴西地区的引入情况，并为最近描述的托坎廷斯-阿拉瓜亚河流域特有种的彩鲷属增加了系统发育数据。
