Data for Geographic variation in phenotypic divergence between two hybridizing field cricket species

Patterns of morphological divergence across species’ ranges can provide insight into local adaptation and speciation. In this study, we compare phenotypic divergence among 4,221 crickets from 337 populations of two closely related species of field cricket, Gryllus firmus and G. pennsylvanicus and their hybrids. We find that these species differ across their geographic range in key morphological traits, such as body size and ovipositor length, and we directly compare phenotype with genotype for a subset of crickets to demonstrate nuclear genetic introgression, phenotypic intermediacy of hybrids, and essentially unidirectional mitochondrial introgression. We discuss how these morphological traits relate to life history differences between these two species. Our comparisons across geographic areas support prior research that suggested that cryptic variation within G. firmus may represent different species. Overall, our study highlights how variable morphology can be across wide ranging spe..., See publication for details., All data files are basic formats (text, csv).跨物种分布范围的形态分化模式，可为理解局部适应与物种形成过程提供重要视角。本研究对两种近缘田野蟋蟀——粗腿蟋（Gryllus firmus）与宾州蟋（G. pennsylvanicus）及其杂交子代的337个种群共4221只个体的表型分化进行比较分析。研究发现，这两个物种在其分布范围内的关键形态性状（如体型大小、产卵器长度）上存在显著分化；同时我们对部分蟋蟀个体的表型与基因型开展直接比对，证实了核基因渐渗、杂交子代的表型中间型特征，以及近乎单向的线粒体基因渐渗现象。我们还探讨了这些形态性状与这两个物种生活史差异之间的关联。基于地理分布的比对结果，我们支持此前的研究结论：即粗腿蟋（Gryllus firmus）内部的隐存变异可能代表不同的物种。总体而言，本研究揭示了广布类群间形态性状的巨大变异……详细内容请参阅已发表文献。所有数据文件均采用通用基础格式（文本格式、CSV格式）。