PDF(Pubmed)
Abstract：
The functional anatomy of the split compound eyes of whirligig beetles Dineutus mellyi (Coleoptera: Gyrinidae) was examined by advanced microscopy and microcomputed tomography. We report the first 3D visualization and analysis of the split compound eyes. On average, the dorsal and ventral eyes contain 1913 ± 44.5 facets and 3099 ± 86.2 facets, respectively. The larger area of ventral eyes ensures a higher field of vision underwater. The ommatidium of the split compound eyes is made up of laminated cornea lenses that offer protection against mechanical injuries, bullet-shaped crystalline cones that guide light to the photoreceptive regions, and screening pigments that ensure directional light passage. The photoreceptive elements, made up of eight retinular cells, exhibit a tri-tiered rhabdom structure, including the upper distal rhabdom, a clear zone that ensures maximum light passage, and an enlarged lower distal rhabdom that ensures optimal photon capture.
摘要：
通过先进的显微镜和显微计算机断层扫描检查了Whirligig甲虫Dineutusmellyi（鞘翅目：Gyrinidae）的分裂复眼的功能解剖。我们报告了分裂复眼的第一个3D可视化和分析。平均而言,背侧和腹侧眼包含1913±44.5小平面和3099±86.2小平面，分别。更大的腹侧眼睛区域确保了水下更高的视野。裂开的复眼由层压角膜镜片组成，可防止机械伤害，将光线引导到感光区域的子弹状晶体锥，和筛选颜料，确保定向光的通过。感光元件，由八个视网膜细胞组成，表现出三层的横纹肌结构，包括上远端横纹肌，一个清晰的区域，确保最大的光通道，和扩大的下远端横纹肌，确保最佳的光子捕获。
