东方蜜蜂背单眼的结构和胚后发育
Structure and postembryonic development of thedorsal ocellus of the honeybee(Apis cerana)
李兆英**
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作者单位：陕西教育学院生物科学与技术系西安710061
中文关键词：东方蜜蜂，背单眼，结构，胚后发育
英文关键词：Apis cerana，dorsal ocellus，structure，postembryonic development，BrdU
中文摘要： 本研究通过形态解剖和BrdU 免疫组织化学方法对东方蜜蜂Apis cerana Fabricius 背单眼的胚后发育过程
进行了比较研究，结果表明:东方蜜蜂的每一个背单眼都包括角膜晶体、角膜生成细胞、小网膜细胞以及后部的单
眼神经。蜜蜂的背单眼起源自头壳上皮;其胚后发育的高峰期集中在蛹发育的前3 d;其新细胞主要来源于上皮
细胞和圆锥形单眼囊周围细胞的有丝分裂;单眼同脑的联系在P1 期前后就已经建立;角膜晶体的形成在P5 以
后。说明单眼的结构和发育同其功能密切相关。
英文摘要： The structure and postembryonic development of the dorsal ocellus of Apis cerana Fabricius was studied byanatomical observation and BrdU immunohistochemistry． The results show that each ocellus consisted of cornea，corneagenous layer，retinular cells and ocellar nerve． The 3 ocelli of the adult honeybee were of epidermal origin． Thedevelopment of the ocellus was most active during P1 － P3． New cells were the products of mitotic divisions occurring inthe epidermal cells and ocellar capsule margins． In the P1 retinula，axons were found making contact with interneuronsfrom both the ocellar nerve and the brain． The cornea appeared after the P5 stage． Ocellar structure and development is closely related to function．