摘要
用电镜研究了中华绒螯蟹状幼体复眼的结构 ,结果显示出从状幼体I期到状幼体V期复眼的形态发生了变化 ,其表面积从I的 15 40 0μm2 增加到V的 0 .4mm2 ,组成复眼的小眼由泡状突起发育成扁平六角形。小眼的折光部分的角膜、成角膜细胞、晶锥等均有一个发育成熟的过程。感光部分从II起组成小眼的 8个小网膜细胞分化成远端的 1个细胞和近端 7个细胞二部分 ,小眼的感杆束直径随幼体发育从 3.6μm增加到 5 .3μm ,同时组成的微纤毛数量增多。状幼体复眼结构中的一个特征是具有较多的高尔基体 ,随着幼体的发育小网膜细胞中的胞器种类和数量也逐渐增多 ,在V时小眼的结构基本上表现出与成体类似的光适应特征。从复眼的超微结构上看 。
The fine structure of zoaea compound eye of Eriocheir sinensis was studied by electron microscope. The results showed that the shape of the compound eye changed with developing of the larvae from zoaea I to zoaea V. The surface area of the compound eye increased from 15400 μm 2 in zoaea I to 0.4mm 2 in zoaea V. The shape of an ommatidium like a bubble in zoaea I changed into a hexagon in zoaea II. The dioptre part of an ommatidium, including corea, corneagenous cell and cone cell, under goes a development and a mature in zoaea stage. The eight retinular cells, which composed the sensate part of an ommatidium, were divided into distal part (one cell) and proximal part (seven cells). The diameter of the rhabdom increased from 3.6 μm to 5.3 μm with the development of the zoaea to fellow a multiplying of quantity of the microvillus. A large number of Golgi bodies are a feature of the structure of a retinular cell in zoaea. The number and the kind of the organelles in the cell increase with the developing of the zoaea. In zoaea V an ommatidium has a structure similar to adult in light adaptation. The fine structure indicates that zoaea larvae obtains the function of the light sensation gradually.
出处
《水产学报》
CAS
CSCD
北大核心
2001年第2期103-106,T001-T002,共6页
Journal of Fisheries of China
基金
教育部中青年骨干教师基金资助 (高等学校骨干教师资助计划 )
上海市科委自然科学基金 ( 99ZF14 0 2 6 )
