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李培伦,刘伟,王继隆.2014.犬首鮈卵子发生过程及成熟卵膜形态结构观察.动物学杂志,49(5):707-715.
犬首鮈卵子发生过程及成熟卵膜形态结构观察
The Histological Studies on the Oogenesis and the Morphological Structure of the Mature Eggs Envelope in Siberian Gudgeon Gobio cynocephalus
投稿时间:2013-12-10  修订日期:2014-06-26
DOI:10.13859/j.cjz.201405010
中文关键词:  犬首鮈  卵母细胞  卵膜孔  柱状体
英文关键词:Siberian gudgeon, oocytes, micropyle, cylinder
基金项目:农业部财政专项物种资源保护项目(2010-2014);哈尔滨市科技局优秀学科带头人项目(2010RFXYNO47);公益性行业(农业)科研专项(201303056-5)
作者单位E-mail
李培伦 上海海洋大学中国水产科学研究院黑龙江水产研究所 lpl19890925@163.com 
刘伟* 黑龙江水产研究所 liuwei_1020@aliyun.com; 
王继隆 中国水产科学研究院黑龙江水产研究所 哈尔滨 150070  
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中文摘要:
      摘要:通过组织切片和扫描电镜技术对犬首鮈卵子发生过程及成熟卵膜表面结构进行观察。结果显示,犬首鮈卵子发生过程可以分为Ⅰ-Ⅵ时相:第Ⅰ时相卵母细胞主要有卵原细胞构成;第Ⅱ时相卵母细胞外层出现滤泡细胞;皮质液泡和卵黄颗粒分别发生在第Ⅲ、Ⅳ时相;第Ⅴ时相卵母细胞为成熟的卵子,富含丰富的卵黄和少量皮质液泡;第Ⅵ时相卵母细胞退化进而被卵巢吸收。卵膜孔呈漏斗状,卵孔区域类型属于降旋混合系统。犬首鮈成熟卵膜表层具有特殊的柱状体结构,高度为18.3~30.6um,平均分布密度为0.15个/um2,分析可能为该物种或生态类型的卵膜结构特征,推测对产沉粘性卵鱼类受精卵孵化、胚胎发育起重要作用。
英文摘要:
      Abstract: Using conventional histological methods and scanning electron microscope,the developing process of oocytes and the morphological structure of the mature eggs of Gobio cynocephalus were observed. The results showed that Dybowsky egg development process was divided into six phases. In Phase Ⅰ the oocytes were primarily composed of undifferentiation oogonia, and in phaseⅡ the oocytes were surrounded by a layer of follicular cells. Phase Ⅲ and Ⅳ oocytes differentiated significantly, with accumulated vitelline vacuoles from plasmalemma to karyolemma and yolk from karyolemma to plasmalemma. Phase Ⅴ oocyte was the mature egg, with rich yolk and less vitelline vacuoles in the cytoplasm,and the Phase Ⅵ oocytes, if not released, entered the degradation stage, with damaged membranes and the yolk reabsorption. The micropyle shaped like a funnel, the type of micropyle area belongs to down spin hybrid system. The special structure named cylinder was full of the mature egg surface, the height of cylinder is 18.3~30.6um, the average density was about 0.15/um2, maybe the fishes with the similar ecological type like Dybowsky have this egg envolpe structure characteristics, we conjecture that it plays a significant role in fertilized egg hatching and embryonic development.
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