文章摘要
何德奎.色林错裸鲤性腺发育的组织学研究[J].水产学报,2001,25(2):
色林错裸鲤性腺发育的组织学研究
Histological studies on the gonadal developmentof Gymnocypris selincuoensis
投稿时间:2014-04-15  修订日期:2014-04-15
DOI:
中文关键词: 色林错裸鲤 性腺发育 组织学 产卵类型 西藏高原 湖泊
英文关键词: Gymnocypris selincuoensis  gonadal development  histology  spawning pattern and period  Tibet
基金项目:国家重点基础研究发展计划(973计划),中国科学院资助项目,国家自然科学基金,农业部科技攻关项目
作者单位地址
何德奎 中国科学院水生生物研究所!湖北武汉430072 中国科学院水生生物研究所!湖北武汉430072
摘要点击次数: 1413
全文下载次数: 1145
中文摘要:
      采用组织切片法,对西藏特有鱼类色林错裸鲤的性腺发育、产卵时间和产卵类型等进行了研究.其性腺的发育可分为六个时期,卵母细胞的发育分为5个时相.在第2时相晚期到第3时相早期,卵母细胞中具有卵黄核和核仁物质外排现象,核仁排出物可能与核周的颗粒卵黄形成有关.第2时相到第4时相早期,核膜外侧具有一透明层.产卵后未排出的成熟卵粒通过颗粒细胞吸收和利用.已达性成熟年龄的个体并不是每年都参与繁殖活动,具有繁殖间隔现象.产卵时间始于4月上旬,持续到8月上旬.色林错裸鲤属于分次同步产卵类型.
英文摘要:
      The histology of the gonadal development of Gymnocypris selincuoensis , an endemic fish in Selincuo Lake, Northern Tibet , was studied. The development of ovary and testis was composed of Ⅵstages . The oogenesis was composed of 5 phases : 1. oogonia; 2. oocyte with follicular epithelium consisting of single layer of follicle cells; 3. oocyte with vesicles; 4. oocyte filled with yolk; 5. mature oocyte. In the later phase 2 of development of oocytes , the yolk nucleus , which was probably related to the formation of yolk , broke up and formed a ring in the outer cortex. From the later phase 2 to the middle phase 3 of development of oocytes , the nucleolar bodies extruded into cytoplasm nucleolar bodies with cytoplasm would helpful to the process of yolk formation. From the phase 2 to the early phase 4 of oocytes , there was a transparent layer in the outboard of nuclear membrane. From the early phase 3 of oocyte , between oocyte membrane and follicular layer presented zona radiata which is mostly formed by oocyte. After spawning , a few mature oocytes became astrophied and were re2absorbed subsequently in ovary. The spawning season which was evidenced by histology of oocytes and investigation of field work, extends from early April to early August. In a reproductive season, the ovary of selincuo naked carp matured only once in a year.
HTML   查看全文   下载PDF阅读器
关闭

手机扫一扫看