东南太平洋智利竹鱼卵巢发育的组织学观察  

Histological observation on the ovary development of Chilean jack mackerel(Trachurus murphyi) in the southeast Pacific Ocean

作　　者：周斌[1] 张敏[1,2,3,4] 邹晓荣 陆奇巍[1] 吴超[1] 晋伟红[1] 

机构地区：[1]上海海洋大学海洋科学学院,上海201306 [2]国家远洋渔业工程技术研究中心,上海201306 [3]上海海洋大学农业部大洋渔业资源环境科学观测实验站,上海201306 [4]上海海洋大学大洋渔业资源可持续开发省部共建教育部重点实验室,上海201306

出　　处：《上海海洋大学学报》2012年第5期892-898,共7页Journal of Shanghai Ocean University

基　　金：上海市重点学科建设项目(S30702);农业部渔业局项目(D-8005-10-0202);科技部农业科技成果转化资金项目(2010GB2C000145)

摘　　要：根据大型拖网渔船"开欣"轮2010年9-10月以及"开富"轮2011年8月在东南太平洋海域采集的441尾智利竹鱼样本,对雌鱼卵巢进行组织学切片与观察。结果表明:(1)智利竹鱼卵母细胞发育分为5个时相,其中第2时相核膜外出现透明层,第3时相胞质中形成大量卵黄颗粒和油滴,第4时相核膜开始溶解并且能观察到精孔结构,第5时相成熟卵粒与滤泡膜分离;(2)卵径分布图显示,Ⅳ期卵巢中有各种不同卵径的卵粒,并且存在两个明显的高峰;(3)卵巢内卵母细胞发育不同步,产卵类型属于分批非同步型;(4)从8月底到10月初是智利竹鱼性腺发育高峰期。A total of 441 Chilean jack mackerel（Trachurus murphyi） were collected by two large-scale trawlers named ＂KAIXIN＂ from September to October 2010 and ＂KAIFU＂ in August 2011 in the southeast Pacific Ocean.In this paper,the histology of ovary was studied.The main results are：（1） The development of oocytes of Chilean jack mackerel was composed of five phases.In the phase 2 of oocyte development,there appeared a transparent layer in the outboard of nuclear membrane.A lot of yolk granules and lipoid vesicles formed in the cytoplasm during the phase 3 of oocyte development.Some of the nuclear membranes began to dissolve when the phase 4 came and we could find micropyle near the animal polar.The mature oocytes were apart from follicle membrane in the phase 5 of oocyte development.（2） The size distribution of eggs showed there were varied oocytes in the ovary of stage Ⅳ and there were two obvious pinnacles in the figure.（3） The spawning pattern of jack mackerel is multiple spawning that we could find more than one phase of oocytes in the same ovary at the same time.（4） The gonads were developing at a high speed from late August to early October.

关 键 词：智利竹鱼 卵巢发育 组织学 东南太平洋 

分 类 号：S932.4[农业科学—渔业资源]