不同品种泥鳅怀卵量的比较分析【毕业论文】.doc

本科毕业论文 （20 届） 不同品种泥鳅怀卵量的比较分析 专业：水产养殖学 目录 中文摘要……………………………………………………………………………1 英文摘要……………………………………………………………………………2 1.前言 ………………………………………………………………………………3 2.材料与方法．………………………………………………………………………6 2.1材料鱼的收集…………………………………………………………………6 2.2取样步骤………………………………………………………………………6 2.3计算……………………………………………………………………………6 2.4数据处理………………………………………………………………………7 3.结果…………………………………………………………………………………7 3.1真泥鳅怀卵量的基本情况……………………………………………………7 3.2大鳞副泥鳅怀卵量的基本情况………………………………………………7 3.3 不同品种泥鳅不同体长区间怀卵量差异比较………………………………7 3.4 不同品种泥鳅不同体长区间怀卵量差异显著性检验………………………8 讨论 ………………………………………………………………………………9 结论…………………………………………………………………………………9 致谢 ………………………………………………………………………………9 参考文献………………………………………………………………………………10  [摘要] 研究表明，各种养殖鱼类的不同品种间怀卵量存在差异，而泥鳅两种常见养殖种的怀卵量差异问题目前有待进一步研究。本文通过对2010年7月间在舟山市场购得的167尾雌性泥鳅的研究，测量体长体重并检测泥鳅个体单位怀卵粒数的方法，发现大部分样本泥鳅体长集中在20cm以下，而其怀卵量总体也随体长体重的增加有明显增加趋势，阐述了真泥鳅和大鳞副泥鳅的怀卵量情况及其差异性，论证了两者怀卵量差异问题，得出了真泥鳅的怀卵率和怀卵强度均高于大鳞副泥鳅，真泥鳅和大鳞副泥鳅各体长段间怀卵强度差异不显著的结论。 [关键词] 大鳞副泥鳅 真泥鳅 怀卵率 怀卵量 Comparative analysis on different species of loach fecundity [Abstract] Studies have shown that a variety of different species of farmed fish fecundity differences between, but two common breeding species of loach fecundity differences matter is pending further study. Based on the July 2010 market in Zhoushan among the 167 female loach purchased research, measurement of body weight and body length unit testing pregnant Loach number of eggs per individual method, found that most samples concentrated in Loach 20cm in length below the The total fecundity with body length is also significantly increased weight gain trend, described true loach and Sauvage of fecundity and its diversity, demonstrated differences between the fecundity problems,Misgurni anguillicaudatus obtained fecundity fecundity rate and intensity were higher than dabryanus really dabryanus Loach and long segment of the body between the brood strength of the conclusions of no significant difference. [Keyword] Paramisguruns dabryanus Misgurni anguillicaudatus