美洲鲥鱼卵巢发育规律和性类固醇激素变化研究  

The study of ovary development and steroid hormone changes in Alosa sapidissima

作　　者：洪磊[1] 李兆新[1] 陈超[1] 郭正龙 王蔚芳[1] 雷霁霖[1] 

机构地区：[1]中国水产科学研究院黄海水产研究所,农业部海洋渔业可持续发展重点实验室,青岛市海水鱼类种子工程与生物技术重点实验室,山东青岛266071 [2]江苏中洋集团,江苏南通226600

出　　处：《中国工程科学》2014年第9期86-92,共7页Strategic Study of CAE

基　　金：国家级星火计划重大项目"长江洄游珍稀鱼类产业化关键技术集成"(2012GA690001)

摘　　要：采用组织学、形态学及电化学等技术方法,研究了人工养殖条件下美洲鲥鱼雌性亲鱼卵巢发育和性类固醇激素的周期变化规律。结果表明,美洲鲥鱼属于非同步分批产卵类型;根据卵巢外部形状大小及色泽等的不同,可将美洲鲥鱼卵巢发育过程分为6个时期;根据卵母细胞的形态结构、卵黄物质的积累和滤泡细胞的变化,将卵子发生划分为6个时相;卵巢周期变化过程中,肝脏指数(HSI)和肥满度(CF)变化不显著,性腺指数(GSI)与血浆中雌二醇(E2)水平表现出与性腺发育协同一致的变化规律。In this study,the morphological changes of ovary development and variation of correlated plasma sex steroids levels were detected in Alosa sapidissima. The result shown that Alosa sapidissima belongs to the non-synchronized multiple batch spawner;based on size, shape and external color,the development of ovary was divided into six stages;according to changes of inner structures,yolk accumulating and development of follicle cells,the oogenesis could be divided into six phases. There were no significant differences about hepatosomatic in-dex （HSI） and condition factor （CF） during the ovarian maturation cycle,but gonadosomatic in-dex （GSI） and 17β-estradiol （E2） were found to increase during the peak phase of vitellogenic growth corresponding to the ovary development.

关 键 词：美洲鲥鱼 卵巢发育 卵子发生 组织学 形态学 性类固醇激素 

分 类 号：S961[农业科学—水产养殖]