连续孤雌生殖对蒙古裸腹溞繁殖能力的影响  

The effect of continuous parthenogenesis on reproduction capacity of Moina mongolica

作　　者：陈桃英[1] 王岩[1] 

机构地区：[1]上海水产大学农业部水产增养殖生态生理重点开放实验室,上海200090

出　　处：《水产学报》2002年第6期498-502,共5页Journal of Fisheries of China

基　　金：教育部骨干教师资助计划(1462);国家自然科学基金(30070584)资助

摘　　要：在实验室内采用单个体培养方法对蒙古裸腹进行了105d的连续孤雌生殖培养。在适宜而稳定的温度、盐度和食物条件下,连续孤雌生殖24个世代后,蒙古裸腹的繁殖能力未出现明显的下降趋势。实验中,74.1%的蒙古裸腹生殖窝数超过4窝,产幼前发育时间为4.28±0.37d,两次生殖间隔期为2.30±0.41d,前4窝平均每窝生殖量为7.52±1.39个。本实验结果表明:在适宜环境条件下,连续孤雌生殖24个世代不会对蒙古裸腹繁殖能力产生明显的负影响。Moina mongolica continuously reproduced 24 generations through parthenogenetic reproduction in 105 days during which M. mongolica were individually reared in laboratory under constant temperature (25℃),salinity (10), and food condition(3×106cell·ml-1 Chlorella spp.).There was not significant decline in reproduction capacity for the progenies that were parthenogenetically reproduced.74.1% individuals in the experiment reproduced four broods. Time for the first brood was 4.28± 0.37days (mean±SD). Interval between two broods was 2.30 ± 0.41 days within 1 to 4 broods while number of offspring per brood was 7.52±1.39. This experiment indicated that there was not significantly negative effect on reproduction capacity of M. mongolica following 24 generations of continuously parthenogenetic reproduction.

关 键 词：连续孤雌生殖 蒙古裸腹Sao 繁殖能力 生殖频率 生殖量 活铒料 

分 类 号：S963.21[农业科学—水产养殖]