Rhabdom evolution in butterflies: insights from the uniquely tiered and heterogeneous ommatidia of the Glacial Apollo butterfly, Parnassius glacialis
Rhabdom evolution in butterflies: insights from the uniquely tiered and heterogeneous ommatidia of the Glacial Apollo butterfly, Parnassius glacialis
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DOI：
10.1098/rspb.2012.0475
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发表时间：
2012-09
期刊：
影响因子：
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通讯作者：
A. Matsushita;Hiroko Awata;M. Wakakuwa;Shin-ya Takemura;K. Arikawa
中科院分区：
文献类型：
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作者：
A. Matsushita;Hiroko Awata;M. Wakakuwa;Shin-ya Takemura;K. Arikawa
冰期阿波罗蝴蝶的眼睛，冰川拟青蝶科的活化石物种，包含三种类型的光谱不同的小眼。电子显微镜显示，阿波罗狂想症是分层的。远端层仅由表达紫外光或蓝色吸收视色素视蛋白的光感受器组成，近端层由表达绿色或红色吸收视色素视蛋白的光感受器组成。这种组织是独一无二的，因为其他已知蝴蝶的远端层包含两个对绿色敏感的光感受器，它们可能在改善空间和/或运动视觉方面发挥作用。种间比较表明，阿波罗流纹体保留了祖先的分层图案，但进行了一些修改，以增强其对光谱长波区域的色觉。
The eye of the Glacial Apollo butterfly, Parnassius glacialis, a ‘living fossil’ species of the family Papilionidae, contains three types of spectrally heterogeneous ommatidia. Electron microscopy reveals that the Apollo rhabdom is tiered. The distal tier is composed exclusively of photoreceptors expressing opsins of ultraviolet or blue-absorbing visual pigments, and the proximal tier consists of photoreceptors expressing opsins of green or red-absorbing visual pigments. This organization is unique because the distal tier of other known butterflies contains two green-sensitive photoreceptors, which probably function in improving spatial and/or motion vision. Interspecific comparison suggests that the Apollo rhabdom retains an ancestral tiered pattern with some modification to enhance its colour vision towards the long-wavelength region of the spectrum.