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引用本文:王丹丽,徐善良,王家琰.不同盐度对多刺裸腹溞内禀增长率的影响.湖泊科学,1999,11(1):57-62. DOI:10.18307/1999.0109
WANG Dan-li,XU San-liang,WANG Jia-yan.Effects of Different Salinities on the Intrinsic Increase Rate of Moina macrocopa Straus. J. Lake Sci.1999,11(1):57-62. DOI:10.18307/1999.0109
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不同盐度对多刺裸腹溞内禀增长率的影响
王丹丽, 徐善良, 王家琰
宁波大学水产系, 宁波 315211
摘要:
于25℃时, 观察了多刺探腹溞Moina macrocopa Straus在盐度为2‰、3‰、4‰、 6‰、8‰、10‰6个浓度梯度下的生殖与生存.试验表明, 多刺裸腹溞的寿命随盐度升高而缩短, 在 盐度2‰-4‰范围内, 每溞的平均产仔量、产仔总量及种群的内禀增长率(rm)无显著差异, 其最 适盐度为2‰-4‰, 6‰, 为其生殖的盐度上限, 经过短期的海水驯化, 多刺裸腹溞的生殖和生存盐 度上限可达8‰.
关键词:  多刺裸腹溞  盐度  内禀增长率  驯化
DOI:10.18307/1999.0109
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Effects of Different Salinities on the Intrinsic Increase Rate of Moina macrocopa Straus
WANG Dan-li, XU San-liang, WANG Jia-yan
Department of Fisheries, Ningbo University, Ningbo 315111
Abstract:
The reproduction and survival of the Moina macrocopa Straus under 25X3 and six salinities of seawater (2‰, 3‰, 4‰, 6‰, 8‰ and 10‰) has been studied.The experiment results show the total life span on a decrescendo basis varies with the increasing of salinity.Mean number of young produced per female and total number of young produced and the intrinsic increase rate (rm) haven't significant differences (2‰-4‰).The results of the experiments also show that the appropriate salinity is 2‰-4‰, while lethal upper salinity limit of reproduction is 6%o.Finally, it is found that after short term training, the lethal upper salinity limit of reproduction and survival of Moina macrocopa may rech 8‰.
Key words:  Moina macrocopa  salinity, intrinsic rate of increase  training
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