| 大鳞副泥鳅性腺发生和分化的组织学研究 |
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| 引用本文： | 史改花,杜启艳,张晓亚,吴小华,常重杰.大鳞副泥鳅性腺发生和分化的组织学研究[J].河南师范大学学报(自然科学版),2008,36(6). |
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| 作者姓名： | 史改花 杜启艳 张晓亚 吴小华 常重杰 |
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| 作者单位： | 河南师范大学,生命科学学院,河南,新乡,453007 |
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| 基金项目： | 国家自然科学基金(30771666); 河南省杰出青年科学基金(0512001800); 河南省省级重点学科动物学资助 |
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| 摘 要： | 通过人工繁殖技术获得大鳞副泥鳅幼体,采用石蜡显微切片技术对幼体性腺发生、分化的组织学特征进行了系统观察.结果表明大鳞副泥鳅是在出膜后14 d出现了未分化性腺,卵巢分化始于25日龄,到45日龄分化完全;精巢则是分化于30日龄,于75日龄分化为I期精巢.卵巢分化早于精巢.从性腺分化开始,将要发育为卵巢的性腺还表现为体积快速增大,向体腔中间靠拢,横截面变宽,而将要发育为精巢的性腺则呈两端尖中间稍突的梭形,增生并不明显,这些特征可能与雌雄性腺的发育和生殖细胞的分化速度有关,可以作为大鳞副泥鳅性腺早期分化的形态特征.
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| 关 键 词： | 大鳞副泥鳅 性腺分化 形态发生 |
Histological Study of Gonadogenesis and Differentiationin Paramisgarnus Dabryanus |
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| SHI Gai-hua,DU Qi-yan,ZHANG Xiao-ya,WU Xiao-Hua,CHANG Zhong-jie.Histological Study of Gonadogenesis and Differentiationin Paramisgarnus Dabryanus[J].Journal of Henan Normal University(Natural Science),2008,36(6). |
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| Authors: | SHI Gai-hua DU Qi-yan ZHANG Xiao-ya WU Xiao-Hua CHANG Zhong-jie |
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| Abstract: | Obtaining larvae of Paramisgarnus dabryanus by artificial fertilization,the gonadogenesis and differentiation of larvae were studied by light microscope.The results showed that: On 14 day postfertilization(dpf) in Paramisgarnus dabryanus,undifferentiation gondal primordia are presented.Ovarian differentiation initiated in 25 dpf.Ovary has formed in 45 dpf.Undifferentiation gonads on 30 dpf are recognizable as presumptive testes.Until 75 dpf,testes has formed.The differentiation of ovarian is earlier than te... |
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| Keywords: | Paramisgarnus dabryanus gonadogenesis morphogenesis |
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