似刺鳊鮈的性腺发育组织学观察  

Observation on the gonad development of Paracanthobrama guichenoti

作　　者：徐钢春[1] 张呈祥[2] 聂志娟[1] 张守领[1] 顾若波[1] 

机构地区：[1]中国水产科学研究院淡水渔业研究中心,农业部淡水渔业和种质资源利用重点实验室,江苏无锡214081 [2]江苏省江阴市水产指导站,江苏江阴214431

出　　处：《淡水渔业》2014年第1期26-31,共6页Freshwater Fisheries

基　　金：国家科技支撑计划项目(2012BAD26B05);中央级公益性科研院所基本科研业务费专项资金(2011JBFC11);江苏省水产三项工程项目(PJ2010-55)

摘　　要：对似刺鳊（ Paracanthobrama guichenoti）的性腺组织进行周年取样，采用石蜡切片技术，观察了似刺鳊卵巢、精巢发育的组织学特征和周年变化过程，结果显示：似刺鳊性成熟年龄为1龄，卵巢发育属于部分同步性，一次性产卵类型。产卵时间始于3月底，持续到5月初，在整个生殖周期内，性腺发育分六个时期，雌性全年的成熟系数一般波动在1.01％～16.50％，雄性全年的成熟系数一般波动在0.08％～0.93％。精巢属于典型的小叶型结构。精子发生经历了精原细胞、初级精母细胞、次级精母细胞及精子细胞和成熟的精子5个阶段。The gonads of Paracanthobrama guichenoti were sampled during one year .The histological characteristics , an-nual development of ovary and spermary of P.guichenoti were observed by paraffin slice and HE staining techniques .The results showed that P.guichenoti spawned only once in a year and the age of sexual maturity is one year old .The ovarian development was partial synchronous , and its spawning period lasted from March to May .In the reproductive cycle , the development of gonads could be divided into six stages .The female gonadosomatic indexs （ GSI） were ranging from 1.01%to 16.5%all the year round , while the GSI of male were ranging from 0.08%to 0.93%.The spermary had typical lobu-lar structures, the sperms developed through five stages , including androgone, first spermatocyte, secondary spermato-cyte, spermatoblast and mature sperms .

关 键 词：似刺鳊 ( Paracanthobrama guichenoti) 卵巢 精巢 组织学 

分 类 号：S917.4[农业科学—水产科学]