【作者】 王松；

【导师】 龚世园；

【作者基本信息】 华中农业大学 ， 水产养殖， 2008， 硕士

【摘要】 2006年7月到2007年6月,我们在池塘内进行了黄鳝的网箱养殖试验,对网箱内黄鳝的性腺发育和繁殖力进行了研究,试验结果如下:1.在网箱养殖条件下,黄鳝的性腺有着完整的发育过程,其发育正常。2.在网箱养殖条件下,黄鳝的性腺发育可分为雌性、间性、雄性三个阶段。卵巢发育分为Ⅰ-Ⅵ期;间性性腺发育分为间性Ⅰ期和间性Ⅱ期;精巢发育分为Ⅰ-Ⅵ期。各期性腺主要包含对应时相的生殖细胞,有时也有其它时相生殖细胞存在,生殖细胞的发育速度并不一致。3.在网箱养殖条件下,对296-350mm、351-400mm和401-442mm这三个体长段雌鳝的卵进行统计,结果表明:各体长段雌鳝的性腺系数、卵径无显著性差异(P＞0.05);绝对繁殖力随着体长的增大而增大,其变化范围为532±87至714±142粒,各体长段之间无显著性差异(P＞0.05);相对繁殖力(AF/L)的变化范围为1.63±0.27至1.74±0.31粒/mm,各体长段之间无显著性差异(P＞0.05);相对繁殖力(AF/W)的变化范围为7.89±1.57至11.96±1.96粒/g,各组间亦无显著性差异(P＞0.05)。更多还原

【Abstract】 From July 2006 to June 2007, cage culture experiment of Monopterus albus was carried on in the same pond, the gonadal development and productivity had been studied, the results are as follows:1. In cage culture condition, the development process of Gonad is complete, gonadal development of Monopterus albus is normal.2. Gonadal development of Monopterus albus is divided into three stages, they are stages of female, intersex and male. Female stage includesⅠtoⅥ, intersex stage includesⅠandⅡ, male stage includes I to VI. In different development stages, gonad is mainly included by the corresponding reproductive cells, sometimes there are other phases of reproductive cells exist, the development speed of reproductive cells is not consistent.3. Female Monopterus albus were divided into 3 groups by length in the trial, they were 296-350mm group, 351-400mm group and 401-442mm group. Statistic result of the eggs show that: In cage culture condition, gonad coefficient and egg drive have no significant difference among the 3 groups(P>0.05). Absolute fecundity is increased with length, its range is 532±87-714±142 tablets, there are no significant difference among the groups(P>0.05). The change scope of relative fecundity (AF/L) is 1.63±0.27-1.74±0.31 tablets/mm, there are no significant difference among the groups (P>0.05). The change scope of relative fecundity (AF/W) is 7.89±1.57-11.96±1.96 tablets/g, there are also no significant difference among the groups(P>0.05).更多还原