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细鳞鲴卵巢发育的组织学观察
引用本文:刘敏,熊邦喜,吕光俊.细鳞鲴卵巢发育的组织学观察[J].水产科学,2010,29(3).
作者姓名:刘敏  熊邦喜  吕光俊
作者单位:华中农业大学,水产学院,湖北,武汉,430070
基金项目:湖北省“十一五”重大科技攻关计划项目(2006AA203A03-03);;“十一五”国家科技支撑计划项目(2006BAD03B02-04)
摘    要:采用组织学方法对细鳞鲴卵巢周年变化和卵母细胞发育进行了观察研究。结果表明,细鳞鲴卵巢发育分为6个时期,卵母细胞发育分5个时相,从第Ⅲ时相卵母细胞开始表现出种的特异性。3月卵巢处于产前发育阶段,4-7月为繁殖期,5-6月为繁殖盛期,8月卵巢基本修整完毕,9-10月为Ⅱ′期发育,11月至翌年2月以Ⅲ期卵巢越冬。细鳞鲴的产卵方式为短期分批同步产卵类型,在一个生殖周期内一般产卵2~3次。

关 键 词:细鳞鲴  卵巢发育  组织学  卵母细胞  性成熟系数  

Histological Observation of Ovary Development in Xenocypris microlepis
LIU Min,XIONG Bang-xi,L Guang-jun.Histological Observation of Ovary Development in Xenocypris microlepis[J].Fisheries Science,2010,29(3).
Authors:LIU Min  XIONG Bang-xi  L Guang-jun
Institution:Fisheries College;Huazhong Agricultural University;Wuhan 430070;China
Abstract:Annual changes in ovaries and oocyte development were histologically observed in Xenocypris microlepis collected monthly in Daoguanhe Reservoir, Hubei Province from Autumn 2007 to August 2008. The development of the ovary underwent six consequent stages while oocytes had five phases, with species specificity from phase Ⅲ. The ovary was under the developing stage before spawning in March. The spawn occurred from April to July, and peaked in May and June. In late July and August, the ovary was in a stage of degeneration after spawning, and then it returned to stageⅡin September and October. From November to February of the following year, the ovary aws in stage Ⅲin the winter. A histological observation of the oocyte development showed that the fish was in a successive process and female seemed to be able to spawn twice, even three times, in one spawning season.
Keywords:Xenocypris microlepis  ovary development  histology  oocyte  gonado-somatic index  
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