摘要
应用光镜技术和透射电镜技术,研究了日本沼虾胚胎复眼的发生。在原肠期,胚区前端的外胚层细胞增殖形成视叶原基。发育至后无节幼体期开始形成视神经节。在前状幼体早期胚胎出现复眼色素,同时构成复眼的细胞开始分化。前状幼体晚期,复眼色素区扩大到复眼直径的一半。复眼由个眼构成,每个个眼由角膜、角膜生成细胞、晶锥、小网膜细胞等组成。超微结构显示,胚胎的复眼结构与成体的相似,但感杆束直径比成体小。至胚胎孵化,眼柄尚未发育完善。
We studied the development of the compound eyes in Macrobrachium nipponense by histological section methods and electron microscopy.The results showed:At gastrula stage,the cells in front of the embryonic area gradually cleave to form optic disc rudiment.When the embryo reaches egg-metanauplius stage,the optic ganglion begins to form At egg-protozoea stage, the pigment begins to appear The structure of the compound eyes at egg-zoea stage is similar to the adult,which including lentigen,lentigen cell,crystalline cell,retirular cell and rhabdom.
出处
《华东师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2003年第3期56-60,共5页
Journal of East China Normal University(Natural Science)
基金
上海市曙光计划
教育部骨干教师计划基金
高等学校博士点基金(20010269102)赞助.
关键词
日本沼虾
胚胎发育
视叶原基
复眼
Macrobrachium nipponense
embryonic development
optic disc rudiment
compound eyes
