Phototaxis in water fleas (Daphnia magna) is differently influenced by visible and UV light
Phototaxis in water fleas (Daphnia magna) is differently influenced by visible and UV light
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DOI：
10.1007/s003590050293
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发表时间：
1998-12-01
期刊：
影响因子：
--
通讯作者：
Paul, RJ
中科院分区：
文献类型：
--
作者：
Storz, UC;Paul, RJ
在五个等量子通量密度水平（188 和 6.42 . 10(-5) nEinstein 之间）下确定了测试室中单色光垂直照明对大型溞趋光性的影响。可见适应光（500 nm）和随后的光谱测试光具有相同的量子通量密度。动物对紫外线（260-380 nm）产生负趋光性反应。而可见光（420-600 nm）则引起正趋光性。基于对趋光行为的不同参数的评估来确定作用光谱。在 340 nm 处发现了紫外线的最大光谱灵敏度。可见光的最大光谱效率随光强度的变化而变化。讨论了结果的生态后果。
The effects of vertical illumination with monochromatic lights on phototaxis of Daphnia magna in a test chamber were determined at five levels of equal quantal flux density (between 188 and 6.42 . 10(-5) nEinstein). Visible adaptation light (500 nm) and subsequent spectral test light had the same quantal flux density. The animals reacted to ultraviolet light (260-380 nm) with negative phototaxis. whereas visible light (420-600 nm) caused positive phototaxis. Action spectra were determined, based on the evaluation of different parameters of phototactic behavior. The maximum spectral sensitivity in the ultraviolet was found at 340 nm. The maximum spectral efficiency in the visible varied in dependence on light intensity. Ecological consequences of the results are discussed.