趋光性

趋光性（英语：Phototaxis）是一种生物对光靠近或者远离的趋性。^[1]

生理

在有趋光性的生物中，拥有正趋光性的会靠近光源，而有负趋光性的会躲避光线的刺激。^[2]这样对于植物等自养生物来说十分重要，因为趋光性可以帮助植物获得更多阳光以进行光合作用(植物的"正趋光性"称为"向光性"，"负趋光性"称为"背光性")。

飞蛾之类具有复眼的夜间飞行的昆虫，常被误认为具有趋光性，这是一个认知偏误。虽然飞蛾在实际行为上表现为趋向光源飞行，事实上这是因为人造光源（如：火把，电灯）的光线与自然光线（阳光，月光，星光）不同，前者呈放射状，后者接近平行光。自然状态下通过保持平行光线的夹角修正自己的飞行路线，保持直线飞行。而人造光源呈现放射状，干扰了飞蛾的判断，与光源保持锐角飞行的飞蛾就表现成螺旋状飞向光源。

参考文献

^ Martin, E.A. (编), Macmillan Dictionary of Life Sciences 2nd, London: Macmillan Press: 362, 1983, ISBN 0-333-34867-2
^ Menzel, Randolf, Spectral Sensitivity and Color Vision in Invertebrates, H. Aurum (editor) (编), Comparative Physiology and Evolution of Vision in Invertebrates- A: Invertebrate Photoreceptors, Handbook of Sensory Physiology VII/6A, New York: Springer-Verlag: 503–580. See section D: Wavelength–Specific Behavior and Color Vision, 1979, ISBN 3-540-08837-7

分类

[Martin1983-1] Martin, E.A. (编), Macmillan Dictionary of Life Sciences 2nd, London: Macmillan Press: 362, 1983, ISBN 0-333-34867-2

[Menzel1979-2] Menzel, Randolf, Spectral Sensitivity and Color Vision in Invertebrates, H. Aurum (editor) (编), Comparative Physiology and Evolution of Vision in Invertebrates- A: Invertebrate Photoreceptors, Handbook of Sensory Physiology VII/6A, New York: Springer-Verlag: 503–580. See section D: Wavelength–Specific Behavior and Color Vision, 1979, ISBN 3-540-08837-7

[1]

[2]

趋光性

生理

参考文献

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