Raw data for the analysis carried out in the article: Differential responses of body resource allocations of the parasitoid Cotesia flavipes (Hymenoptera, Braconidae) populations to altitude
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Living at high altitudes impose physiological and ecological challenges where species may show changes in their body size, proportions, and shape. Despite the importance of this topic for understanding the origin of diversity, little attention has been invested in this phenomenon at the populational level. This dataset aims to study the relationship between altitude and body size, body proportions, and forewing shape venation of two populations of the parasitoid wasp Cotesia flavipes. Wasps were collected from Diatraea spp larvae from sugarcane crops in two Colombian mountain ranges between 600 m and 2143 m altitude. Linear measurements of different body regions and geometric morphometrics of the forewing were subject to multivariate comparisons and allometric analyses to assess variation and to compare trends between ranges. Central and Eastern Cordillera populations showed opposite trends in their relationships between body size and altitude. Allometric trends were not uniform within and between populations and between structures. The data from the single altitude suggested that the trends within cordilleras and the differences between them were a consequence of altitude and not the result of intrinsic body resource allocation processes. Wing shape between populations differed; however, these changes were poorly related to altitude. It is possible that the differences and patterns from our study resulted from plasticity; but even so, it could be evolutionarily significant as these responses could be selectively important, posteriorly promoting genetic differentiation.
高海拔生存环境会带来生理与生态层面的挑战,物种在此类环境下可能出现体型、身体比例及形态的改变。尽管该主题对于理解生物多样性起源具有重要意义,但目前针对种群层面的此类现象研究仍较为匮乏。本数据集旨在探究两个种群的螟黄足绒茧蜂(Cotesia flavipes)的海拔与体型、身体比例以及前翅翅脉形态之间的关联。研究样本采集自哥伦比亚两条山脉中海拔600米至2143米区间内甘蔗田的草螟属(Diatraea)幼虫体内的该寄生蜂。研究人员对蜂类不同身体部位开展线性测量,并对前翅实施几何形态测量学(geometric morphometrics)分析,随后通过多变量比较与异速生长分析,评估形态变异情况并对比两条山脉种群间的变化趋势。中央科迪勒拉与东科迪勒拉山脉的种群,其体型与海拔的关联趋势恰好相反。种群内部、种群之间以及不同身体结构之间的异速生长趋势并不统一。基于单一位点海拔的数据显示,各山脉种群内部的变化趋势以及种群间的差异,实为海拔因素作用的结果,而非机体内在资源分配过程所致。不同种群的翅脉形态存在差异,但此类变化与海拔的关联性较弱。本研究中观察到的差异与模式,可能源于表型可塑性;即便如此,这类响应若具备选择优势,进而推动遗传分化,因此在进化层面仍具备重要意义。




