Laboratório de Ecofisiologia Animal do Departamento de Sistemática e Ecologia, Universidade Federal da Paraíba, João Pessoa, Paraíba, Brazil.
Departamento de Biologia, Universidade Estadual da Paraíba, Campina Grande, Paraíba, Brazil.
PeerJ. 2022 Mar 25;10:e12879. doi: 10.7717/peerj.12879. eCollection 2022.
Quantifying variability is important for understanding how evolution operates in polymorphic species such as those of the genus Miranda-Ribeiro, 1920, which is widely distributed in South America. distribution is limited to the Caatinga biome in Brazil. We examined its chromatic variation from a populational perspective, looking at different phenetic polymorphism levels and probable chromotypic association by applying statistical and GIS tools that could facilitate future taxonomic research regarding this and other species. We characterized colour patterns and re-evaluated its geographic variation, highlighting potential consequences for the taxonomy of the genus. Our results revealed six principle chromotypes whose frequencies varied among sex and ontogenetic classes. Phenotypic expression appeared to respect defined proportions and evidenced selective value for the species. We conclude that individual variation, together with typological traditionalism may overestimate the polymorphic magnitude at the population level and cause taxonomic inflation. Our data support the usefulness of as a model for microevolutionary studies.
量化变异性对于理解进化在多态物种中的作用非常重要，例如 Miranda-Ribeiro 属的物种，这些物种广泛分布在南美洲。 Miranda-Ribeiro 属的物种分布仅限于巴西的卡廷加生物群系。我们从种群的角度研究了它们的颜色变化，通过应用统计和 GIS 工具，研究了不同的表型多态性水平和可能的色型关联，这有助于未来对该物种和其他物种的分类学研究。我们描述了颜色模式，并重新评估了其地理变异，突出了对该属分类学的潜在影响。我们的结果揭示了六个主要的色型，它们在性别和个体发育等级之间的频率有所不同。表型表达似乎遵守了既定的比例，并证明了对物种的选择价值。我们得出结论，个体变异和类型学的传统主义可能会高估种群水平的多态性程度，并导致分类学膨胀。我们的数据支持将 Miranda-Ribeiro 属作为微进化研究的模型的有用性。
