Key Laboratory of Plant Protection Resources and Pest Management, Ministry of Education, Entomological Museum, Northwest A&F University, Yangling, Shaanxi 712100, China.
Micron. 2010 Dec;41(8):953-9. doi: 10.1016/j.micron.2010.07.005. Epub 2010 Jul 16.
The ultrastructure of the apposition eyes in the hangingfly Bittacus planus Cheng was investigated using transmission electron microscopy. The compound eyes are composed of approximately 1000 contiguous ommatidia, each of which consists of a biconvex cornea, a crystalline cone, eight retinula cells, two primary pigment cells, and 12 secondary pigment cells. The rhabdom is of fused-type and formed by the rhabdomeres from eight retinula cells that run from the cone to the basal lamina, although the rhabdomere from the basal retinula cell (R8) only contributed to the lowest part of the rhabdom. The pigment granules are spread evenly in the primary pigment cells but are concentrated at the proximal and distal ends in the secondary pigment cells, and close to the rhabdom in retinula cells. The rhabdom is peculiar for the presence of gaps at the outer corner of each two adjoining rhabdomeres in different levels of retinula cell except for the proximal zone.
利用透射电子显微镜研究了悬挂蝇 Bittacus planus Cheng 的附肢眼的超微结构。复眼由大约 1000 个连续的小眼组成,每个小眼由一个双凸角膜、一个晶锥、八个光感受细胞、两个初级色素细胞和 12 个次级色素细胞组成。光杆是融合型的,由来自八个光感受细胞的光杆从晶锥延伸到基膜形成,尽管来自基底光感受细胞(R8)的光杆仅贡献了光杆的最低部分。色素颗粒均匀分布在初级色素细胞中,但在次级色素细胞中集中在近端和远端,并且靠近光感受细胞中的光杆。光杆的特点是在不同的光感受细胞层次中,除了近端区域外,每个相邻的两个光杆的外角处都有间隙。