Colour vision in the glow-worm Lampytis noctiluca (L.) (Coleoptera: Lampyridae):: evidence for a green-blue chromatic mechanism
Colour vision in the glow-worm Lampytis noctiluca (L.) (Coleoptera: Lampyridae):: evidence for a green-blue chromatic mechanism
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DOI：
10.1242/jeb.01044
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发表时间：
2004-06-01
影响因子：
2.8
通讯作者：
Osorio, D
中科院分区：
文献类型：
--
作者：
Booth, D;Stewart, AJA;Osorio, D
雄性萤火虫在夜间通过趋光性寻找它们的发光配偶。有很好的证据表明，由七鳃鳗甲虫的配偶的位置是通过一个单一的光谱类的感光器，其光谱灵敏度被调谐到同种发出的生物发光光谱，是无色的。我们问萤火虫趋光性是否涉及两个光谱类感光器之间的相互作用。二元选择实验中，男性提出了不同的光谱组成的人工光刺激。对绿色刺激（λ（max）=555 nm）的正常偏好，对应于由发信号雌性产生的生物发光波长，通过向信号中添加蓝色（λ（max）=485 nm）成分而显著降低。这意味着长波长和短波长敏感的光感受器之间的拮抗相互作用，表明基于色度的色觉。冷冻切片显示，在雄性复眼的额背区域有一条黄色的过滤色素带，这可能严重限制昆虫在昏暗条件下发出信号的色觉。这一明显的悖论的背景下，眼睛内的色素分布和光生态位的物种进行了讨论。
Male glow-worms Lampyris noctiluca find their bioluminescent mates at night by phototaxis. There is good evidence that location of mates by lampyrid beetles is achieved by a single spectral class of photoreceptor, whose spectral sensitivity is tuned to the bioluminescent spectrum emitted by conspecifics, and is achromatic. We ask whether glow-worm phototaxis involves interactions between two spectral classes of photoreceptor. Binary choice experiments were conducted in which males were presented with artificial light stimuli that differ in spectral composition. The normal preference for a green stimulus (lambda(max)=555 nm), corresponding to the bioluminescence wavelength produced by signalling females, was significantly reduced by adding a blue (lambda(max)=485 nm) component to the signal. This implies an antagonistic interaction between long- and short-wavelength sensitive photoreceptors, suggesting colour vision based on chromatic opponency. Cryosections showed a band of yellow filter pigment in the fronto-dorsal region of the male compound eye, which could severely constrain colour vision in the dim conditions in which the insects signal. This apparent paradox is discussed in the context of the distribution of the pigment within the eye and the photic niche of the species.