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作 者 ：赵文*,王超,张路,魏杰,杨为东,藤力平

期 刊 ：生态学报 2009年 29卷 2期 页码：589~598

关键词：蒙古裸腹溞；地理品系；碱度；pH；存活；生长；生殖；

Keywords:Moina mongolica Daday, geographical strains, pH, Alkalinity, survival, growth, reproduction,

摘 要 ：在温度为(25±0.5)℃，盐度为31.5±0.5的条件下，研究了碱度和pH对两品系蒙古裸腹溞的存活、生长和生殖的影响。结果表明，两品系蒙古裸腹溞在培养液的pH 6~8时，生长率和存活率显著高于其他各组；晋南品系的内禀增长率最大为05758 ind·d-1，内蒙品系的内禀增长率最大为0.5519 ind·d-1。碱度的实验表明，两品系蒙古裸腹溞在培养液的碱度为2.05到4.58 mmol·L-1时，生长率和存活率显著高于其他各组；晋南品系的内禀增长率最大为0.5573 ind·d-1，内蒙品系的内禀增长率最大为0.5376 ind·d-1。在相同的实验条件下，两品系体长的增长差异不大，但各生殖参数晋南品系大多高于内蒙品系。两品系蒙古裸腹溞存活的最适pH为6~8，最适碱度为2.05到4.58mmol·L-1，晋南品系对于碱度和pH的适应能力大于内蒙品系。

Abstract:Effects of alkalinity (ALK) and pH on the survival, growth and reproduction of two strains of Moina mongolica (Jinnan and Neimeng strain) were investigated under temperature of (25±0.5)℃ and salinity of (31.5±0.5). In pH experiment, the results showed that growth and survival rate of M. mongolica in pH 6-8 groups were significantly higher than those in other groups. The highest intrinsic increase rates (rm) of Jinan and Neimeng strain were 0.5758 and 0.5519 ind·d-1, respectively. In ALK experiment, M. mongolica reared at ALK of 2.05-4.58 mmol·L-1 showed significantly higher growth and survival rate than those at other ALK groups. The highest rm of Jinan and Neimeng strain were 0.5573 and 0.5376 ind·d-1, respectively. There was no significant difference in growth of body length between two strains of M. mongolica under the same experimental condition, while Jinan strain of M．mongolic showed higher reproduction parameters than those of Neimeng strain. The above results indicated that optimal pH and ALK for survival of two strains of M. mongolica were pH 6-8 and ALK 2.05-4.58 mmol·L-1, respectively. The adaptability to alkalinity and pH of Jinan strain of M．mongolica is better than that of Neimeng strain.

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