Spectral composition and visual foraging in the three-spined stickleback (Gasterosteidae: Gasterosteus aculeatus L.): elucidating the role of ultraviolet wavelengths
Spectral composition and visual foraging in the three-spined stickleback (Gasterosteidae: Gasterosteus aculeatus L.): elucidating the role of ultraviolet wavelengths
复制标题
三刺刺鱼（Gasterosteidae：Gasterosteus aculeatus L.）的光谱组成和视觉觅食：阐明紫外线波长的作用
DOI：
10.1111/j.1095-8312.2011.01796.x
复制
发表时间：
2012
影响因子：
1.9
通讯作者：
T. Bakker
中科院分区：
文献类型：
--
作者：
I. P. Rick;Dominique Bloemker;T. Bakker
视觉信号可以受到环境光的强度和光谱分布的影响。在浅水生境中，可用于视觉介导行为（如觅食）的光谱范围可以从紫外线（UV）到人类可见光范围内的长波。然而，不同波段在觅食行为中的相对重要性通常是未知的。在这里，我们测试环境光的光谱组成如何影响的行为，三刺棘鱼（Gasterosteus aculeatus）时，活枝水蚤大型觅食。虽然特别注意的紫外波段，我们测量了四种不同的光谱条件下提出的猎物刺鱼的觅食偏好。这些条件从整个光谱中选择性地去除UV（UV-）、短波（SW-）、中波（MW-）或长波（LW-）光。紫外线和长波长的缺乏强烈地降低了对G. aculeatus相比，没有短波和中波光的条件下。为了控制潜在的光栖息地偏好的主要实验中，我们进行了进一步的选择实验，没有猎物的刺激。鱼在这些试验中没有区别显着不同的光谱条件。当比较两个实验时，可以观察到，尽管MW和LW条件的过滤器偏好几乎一致，但它们在较短波长处不同，对UV条件的偏好降低，同时在存在猎物的情况下对SW条件的偏好增加。因此，猎物的选择似乎受到强烈的影响，在光谱的短波端的视觉信息。觅食的喜好也反映了猎物和实验背景之间的色彩对比度值，计算每个照明条件下使用一系列的生理模型刺鱼的感知。© 2011伦敦林奈学会，林奈学会生物学杂志，2012，105，359 - 368。
Visual signalling can be affected by both the intensity and spectral distribution of environmental light. In shallow aquatic habitats, the spectral range available for visually mediated behaviour, such as foraging, can reach from ultraviolet (UV) to long wavelengths in the human visible range. However, the relative importance of different wavebands in foraging behaviour is generally unknown. Here, we test how the spectral composition of ambient light influences the behaviour of three-spined sticklebacks (Gasterosteus aculeatus) when foraging for live cladoceran Daphnia magna. Although paying particular attention to the UV waveband, we measured the foraging preferences of sticklebacks for prey presented under four different spectral conditions. These conditions selectively removed UV (UV‐), short-wave (SW‐), mid-wave (MW‐) or long-wave (LW‐) light from the entire spectrum. The absence of UV and long wavelengths strongly reduced prey attractiveness for G. aculeatus compared with conditions without short-wave and mid-wave light. To control for potential light habitat preferences in the main experiment, we conducted a further choice experiment without prey stimuli. Fish in these trials did not discriminate significantly between the different spectral conditions. When comparing both experiments, it was observed that, although filter preferences for MW‐ and LW‐ conditions were virtually consistent, they differed at shorter wavelengths, with a reduced preference for UV‐ conditions and, at the same time, an increased preference for SW‐ conditions in the presence of prey. Thus, prey choice seems to be strongly affected by visual information at the short-wave end of the spectrum. The foraging preferences were also mirrored by the chromatic contrast values between prey and the experimental background, as calculated for each lighting condition using a series of physiological models on stickleback perception. © 2011 The Linnean Society of London, Biological Journal of the Linnean Society, 2012, 105, 359‐368.