Degrees of polarization of reflected light eliciting polarotaxis in dragonflies (Odonata), mayflies (Ephemeroptera) and tabanid flies (Tabanidae)
Degrees of polarization of reflected light eliciting polarotaxis in dragonflies (Odonata), mayflies (Ephemeroptera) and tabanid flies (Tabanidae)
复制标题
DOI：
10.1016/j.jinsphys.2009.08.013
复制
发表时间：
2009-12-01
影响因子：
2.2
通讯作者：
Horvath, Gabor
中科院分区：
文献类型：
--
作者：
Kriska, Gyoergy;Bernath, Balazs;Horvath, Gabor
除了少数例外，在淡水中发育的幼虫具有正向极化性，即被水平偏振光源吸引，因为它们通过水面反射的水平偏振光来检测水。这些昆虫可能会被反射高度水平偏振光的人造表面（例如油湖、沥青路、黑色塑料板、深色汽车、黑色墓碑、深色玻璃表面、太阳能电池板）所欺骗。除了表面特征之外，这种“偏振光污染”的程度还取决于照明条件、观察方向以及给定水生昆虫物种的偏振敏感度阈值 p*。 p*是指反射光的最小线性偏振度p，可以从给定的昆虫物种中引发正向极性。此前，没有关于水生昆虫的p*的定量数据。这项工作的目的是提供此类数据。使用红色成像偏振测定法。在光谱的绿色和蓝色部分，在多项选择现场实验中，我们测量了蜉蝣、蜻蜓和虻蝇的腹侧极化敏感性阈值p*，其正向极化性先前已在蓝色（450 nm）光谱范围中显示，例如，我们获得了以下阈值：蜻蜓。 Enallagma cyathigerum (0% < p*
With few exceptions insects whose larvae develop in freshwater possess positive polarotaxis, i.e., are attracted to sources of horizontally polarized light, because they detect water by means of the horizontal polarization of light reflected from the water surface These insects can be deceived by artificial surfaces (e.g. oil lakes. asphalt roads, black plastic sheets, dark-coloured cars, black gravestones, dark glass surfaces, solar panels) reflecting highly and horizontally polarized light. Apart from the surface characteristics, the extent of such a 'polarized light pollution' depends on the illumination conditions, direction of view, and the threshold p* of polarization sensitivity of a given aquatic insect species. p* means the minimum degree of linear polarization p of reflected light that can elicit positive polarotaxis from a given insect species Earlier there were no quantitative data on p* in aquatic insects. The aim of this work is to provide such data. Using imaging polarimetry in the red. green and blue parts of the spectrum, in multiple-choice field experiments we measured the threshold p* of ventral polarization sensitivity in mayflies, dragonflies and tabanid flies, the positive polarotaxis of which has been shown earlier In the blue (450 nm) spectral range, for example, we obtained the following thresholds: dragonflies. Enallagma cyathigerum (0% < p*