Ommatidial heterogeneity in the compound eye of the male small white butterfly, Pieris rapae crucivora
Ommatidial heterogeneity in the compound eye of the male small white butterfly, Pieris rapae crucivora
复制标题
DOI：
10.1007/s00441-002-0517-z
复制
发表时间：
2002-03-01
影响因子：
3.6
通讯作者：
Arikawa, K
中科院分区：
文献类型：
--
作者：
Qiu, XD;Vanhoutte, KAJ;Arikawa, K
十字粉蝶雄性复眼腹侧2/3的小眼不均匀。每个小眼含有九个感光细胞。四个细胞（R1-4）形成了近端的三分之二，四个细胞（R5-8）大约占据了近端的三分之一，第九个细胞（R9）占据了小部分的基底部分。R5-8光感受器细胞含有邻近横纹的红色色素簇。从色素簇的位置，小眼可分为三种类型：梯形（I型）、方形（II型）和矩形（III型）。显微分光光度法与落射照明显微镜显示，反射光谱的I型和III型小眼的峰值在635 nm和II型小眼的峰值在675 nm。反射光谱的带宽为40-50 nm。II型小眼在紫外线和紫光落射照明下发出强烈荧光。这三种小眼是随机分布的。小眼的异质性可能是至关重要的颜色歧视。
The ommatidia in the ventral two-thirds of the compound eye of male Pieris rapae crucivora are not uniform. Each ommatidium contains nine photoreceptor cells. Four cells (R1-4) form the distal two-thirds of the rhabdom, four cells (R5-8) approximately occupy the proximal one-third of the rhabdom, and the ninth cell (R9) takes up a minor basal part of the rhabdom. The R5-8 photoreceptor cells contain clusters of reddish pigment adjacent to the rhabdom. From the position of the pigment clusters, three types of ommatidia can be identified: the trapezoidal (type I), square (type II), and rectangular type (type III). Microspectrophotometry with an epi-illumination microscope has revealed that the reflectance spectra of type I and type III ommatidia peak at 635 nm and those of type II ommatidia peak at 675 nm. The bandwith of the reflectance spectra is 40-50 nm. Type II ommatidia strongly fluoresce under ultra-violet and violet epi-illumination. The three types of ommatidia are randomly distributed. The ommatidial heterogeneity is presumably crucial for color discrimination.