Programa de Pós-Graduação em Ecologia de Ambientes Aquáticos Continentais, Departamento de Biologia, Centro de Ciências Biológicas, Universidade Estadual de Maringá (UEM), Maringá, Brazil.
Curso de Graduação em Ciências Biológicas, Departamento de Biologia, Centro de Ciências Biológicas, Universidade Estadual de Maringá (UEM), Maringá, Brazil.
Zebrafish. 2023 Feb;20(1):37-45. doi: 10.1089/zeb.2022.0052. Epub 2023 Jan 25.
comprises 10 valid species occurring in the major river basins of South America. Recent ichthyofaunistic studies in the Ivaí River basin, upper Paraná River system, suggested the existence of a possible new species, which was identified as sp. based on morphological characters. Currently, the use of molecular tools has proved to be fundamental in aiding phylogenetics and cataloging biodiversity; therefore, in this study, we molecularly characterize a possible new species of from the Ivaí River basin encoding the mitochondrial genes Cytochrome c Oxidase, subunit I (), and NADH dehydrogenase subunit 2 (). The genetic differences found showed that this species really differs from the other species, indicating that it is a distinct species, which is possibly already in serious danger of extinction since its habitat often suffers from human exploitation and its distribution is restricted to only two sites in the upper Ivaí River basin, but it has disappeared in one of them.
包括主要分布在南美洲流域的 10 个有效物种。最近在上巴拉那河系统伊瓦伊流域的鱼类学研究表明，可能存在一个新物种，该物种基于形态特征被鉴定为 种。目前，分子工具的使用已被证明在辅助系统发育和编目生物多样性方面至关重要；因此，在这项研究中，我们对伊瓦伊河流域的一种可能的新 进行了分子特征分析，该物种编码线粒体基因细胞色素 c 氧化酶亚基 I () 和 NADH 脱氢酶亚基 2 ()。发现的遗传差异表明，该物种与其他 物种确实不同，表明它是一个独特的物种，由于其栖息地经常受到人类开发的影响，其分布仅限于上伊瓦伊河流域的两个地点，但其在其中一个地点已经消失，因此该物种可能已经处于严重的灭绝危险之中。
