Data from: Attraction to water and polarization in dragonflies and damselflies along a light pollution gradient

This study tested whether artificial polarization imposes a selective pressure that modifies odonate behavior and sensitivity to water and polarization signals. We predicted that odonate species exposed to higher light pollution would show a reduced preference for artificial polarizing traps and an increased preference for natural water bodies. We found interspecific differences in habitat choice criteria with some species favoring polarization above water and vice versa, suggesting that some species avoid ecological traps. We found weak differences in behavior frequency between polarization exposure categories, suggesting either a weak selective pressure imposed by this light pollution, the possibility that selection has already occurred in some species, leading to avoidance behavior, or the existence of alternative physiological-behavioral strategies that prioritize other habitat queues. About database: The first sheet has odonate reproductive behavior frequencies categorized by polarization exposure (null, light, moderate, high), odonate species, suborder, individual, and treatment (Greenpol=high polarization no water, Waterpol=high polarization with water, Metalwater=low polarization with water, Metal=low polarization no water). Data was collected at the end of the rainy season in 2023 in the municipality of La Huerta, Jalisco, México. The reproductive behaviors taken into account were perching, patrolling, and aggression. All behaviors were recorded for male individuals. The second sheet has the recorded temperatures for each study treatment along with the soil in the sun, shade, and the water body temperature at the beginning, middle, and end of behavior observations each time the multiple-choice experiment was carried out.

本研究旨在探究人工偏振（artificial polarization）是否构成选择压力，进而改变蜻蛉目（Odonata）的行为及其对水体与偏振信号的敏感性。本研究提出假设：暴露于更高水平光污染的蜻蛉目物种，对人工偏振诱捕器的偏好会降低，而对自然水体的偏好则会增强。研究结果显示，蜻蛉目的栖息地选择标准存在种间差异：部分物种更偏好水体上方的偏振信号，反之亦然，这表明部分物种会规避生态陷阱（ecological traps）。同时，不同偏振暴露组间的行为频率差异微弱，这可能源于以下几种情形：一是该光污染施加的选择压力较弱；二是部分物种已发生选择作用，进而形成规避行为；三是存在优先考量其他生境线索的替代性生理-行为策略。关于数据集：第一个工作表包含按偏振暴露水平（无暴露、轻度、中度、重度）分类的蜻蛉目繁殖行为频率、蜻蛉目物种、亚目、个体编号以及处理组信息，具体处理组如下：Greenpol（高偏振无水体组、Waterpol（高偏振有水组、Metalwater（低偏振有水组、Metal（低偏振无水体组。数据采集于2023年雨季末期，采集地点为墨西哥哈利斯科州拉韦尔塔（La Huerta）市。本次纳入统计的繁殖行为包括停栖、巡逻与攻击行为，所有行为观测均针对雄性个体。第二个工作表包含各研究处理组的实测温度，具体为每次开展多选实验时，行为观测的起始、中期与结束节点处的露天土壤温度、遮阴土壤温度以及水体温度。