文章基本信息

标题：The eyes of a “nobody”, Anoplodactylus petiolatus (Pantopoda; Anoplodactylidae)
本地全文：下载
作者：M. Heß ; R. R. Melzer ; U. Smola 等
期刊名称：Helgoland Marine Research
印刷版ISSN：1438-3888
出版年度：1996
卷号：50
期号：1
页码：25-36
DOI：10.1007/BF02367135
出版社：BioMed Central
摘要：The fine structure of the four ocelli ofAnoplodactylus petiolatus was examined using serial longitudinal and transversal sections of the eye hill. Each pigment cup ocellus is composed of a (planconvex) cuticular lens, lens forming hypodermal cells, inverse retinula cells with latticed rhabdom and surrounding tapetum and pigment layers. Within the retinula cells a distal “vitreous” zone, a nucleus zone and a proximal rhabdomeric zone can be distinguished. Retinula cell axons originate proximally. The tapetum cells contain several layers of reflecting crystals. Distally, they have a common microvillous region. The intraretinal “vitreous” zone contains glycogen-like particles in the centre and rough ER in the periphery. Contrary to other Pantopoda vitreous cells, a praeretinal membrane and a vertical lens groove have not been observed inAnoplodactylus. While the presence of four (median) ocelli appears to be a primitive characteristic, the inverse orientation of the retinula cells in combination with a tapetum lucidum represents a highly derived characteristic among arthropod median eyes.
关键词：Waste Water;Transversal Section;Tapetum Cell;Pigment Layer;Cell Axon