Laboratory of Ecological and Evolutionary Genetics-LaGEEvo, Institute of Biological and Health Sciences, Federal University of Viçosa, Rio Paranaíba, Brazil.
Postgraduate Course of Management and Conservation of Natural and Agricultural Ecosystems, Federal University of Viçosa-Campus Florestal, Florestal, Brazil.
Zebrafish. 2021 Apr;18(2):149-161. doi: 10.1089/zeb.2020.1916. Epub 2021 Feb 24.
is a fish genus in the order Characiformes, distributed from southern Mexico to the La Plata River in Argentina. Several of its species, including , are threatened with extinction or considered vulnerable because they are highly sensitive to anthropogenic factors. The decline of these species may be related to the growth of agriculture and mining in the Brazilian Cerrado region, thus their recovery requires management plans. In this study, we use morphological, chromosomal, and genetic analysis to suggest that two distinct evolutionary units exist under the same denomination , indistinguishable by the descriptive morphological characters of the species until the present moment and show that the population of the São Francisco River is more diverse than that of the upper Paraná River basin. These results may help with future management and conservation programs of species in the Paraná and São Francisco river basins, two major Brazilian hydrographic basins.
是脂鲤目鲤科中的一个鱼类属，分布于从墨西哥南部到阿根廷的拉普拉塔河。其多个物种，包括 ，因对人为因素高度敏感而面临灭绝或被认为易危。这些物种的减少可能与巴西塞拉多地区农业和采矿业的发展有关，因此它们的恢复需要管理计划。在这项研究中，我们使用形态学、染色体和遗传分析来表明，在相同的名称 下存在两个不同的进化单元，直到目前为止，这些单元在物种的描述性形态特征上无法区分，并且表明圣弗朗西斯科河的种群比上巴拉那河流域的种群更加多样化。这些结果可能有助于未来对巴拉那河和圣弗朗西斯科河流域 的管理和保护计划，这两个流域是巴西的两个主要水系。
