Barroso Cristiane Xerez, de Freitas João Eduardo Pereira, Matthews-Cascon Helena, Bezerra Luis Ernesto Arruda, Lotufo Tito Monteiro da Cruz
Graduate Program on Marine Tropical Sciences, Instituto de Ciências do Mar -LABOMAR, Universidade Federal do Ceará, Av. da Abolição, 3207, Meireles, CEP: 60165-081, Fortaleza, CE, Brazil.
Laboratório de Invertebrados Marinhos do Ceará - LIMCE, Departamento de Biologia, Centro de Ciências, Universidade Federal do Ceará, Rua Campus do Pici, s/n, Bloco 909, Pici, CEP: 60440-900, Fortaleza, CE, Brazil.
Zookeys. 2020 Jan 16;904:117-130. doi: 10.3897/zookeys.904.46790. eCollection 2020.
A reliable taxonomy, together with more accurate knowledge of the geographical distribution of species, is a fundamental element for the study of biodiversity. Multiple studies on the gastropod family Neritidae record three species of the genus in the Brazilian Province: (Bruguière, 1792), (Linnaeus, 1758), and Lamarck, 1822. While has a well-established taxonomic status and geographical distribution, the same cannot be said regarding its congeners. A widely cited reference for the group in Brazil considers a junior synonym of . Using a molecular approach (phylogenetic, species delimitation, and statistical parsimony network analyses), based on two mitochondrial markers (COI and 16S), this study investigated if and are distinct species. The molecular results confirmed the existence of two strongly supported distinct taxonomic entities in the Brazilian Province, which is consistent with the morphological descriptions previously proposed for and . These species occur in sympatry in the intertidal sandstone formations of Northeastern Brazil. Despite the great variation in the colour patterns of the shells, the present study reinforced previous observations that allowed the differentiation of these two species based on these patterns. It also emphasized the importance of the separation of these two clades in future studies, especially those conducted in the Brazilian Province, since these species may cohabit.
一个可靠的分类系统，连同对物种地理分布更准确的了解，是生物多样性研究的基本要素。多项关于腹足纲蜑螺科的研究记录了巴西区域该属的三个物种：（布鲁吉耶尔，1792年）、（林奈，1758年）和拉马克，1822年。虽然具有明确的分类地位和地理分布，但其同属物种的情况并非如此。巴西该类群一个被广泛引用的参考文献认为是 的次异名。本研究基于两个线粒体标记（COI和16S），采用分子方法（系统发育、物种界定和统计简约网络分析），调查了和是否为不同物种。分子结果证实了巴西区域存在两个得到有力支持的不同分类实体，这与先前对和的形态描述一致。这些物种在巴西东北部潮间带砂岩地层中共存。尽管贝壳的颜色模式差异很大，但本研究强化了先前的观察结果，即可以根据这些模式区分这两个物种。它还强调了在未来研究中分离这两个进化枝的重要性，特别是在巴西区域进行的研究，因为这些物种可能共存。
