| 饵料和盐度对罗氏沼虾幼虾生长和存活率的影响 |
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| 引用本文： | 杨世平,丁树军,孙成波,陈兆明,王成桂.饵料和盐度对罗氏沼虾幼虾生长和存活率的影响[J].热带生物学报,2014(2):101-106. |
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| 作者姓名： | 杨世平 丁树军 孙成波 陈兆明 王成桂 |
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| 作者单位： | 广东海洋大学水产学院,广东湛江524088 |
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| 基金项目： | 广东省海洋与渔业局项目（A201201B01）;广东省良种体系项目（湛财农2012年221号） |
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| 摘 要： | 研究了不同饵料(5种饵料)和不同盐度(9个盐度梯度)对罗氏沼虾生长和存活率的影响。结果表明,饵料和盐度对罗氏沼虾幼虾的生长和存活率均有显著的影响(P0.05)。投喂卤虫无节幼体组和鱼肉组的幼虾各项生长参数都显著高于其他各组(P0.05),其中,卤虫无节幼体对幼虾生长和存活的效应尤为突出,体长增长率、体质量增长率和存活率分别达(108.00±6.928)%,(445.45±74.828)%和92.67%。在盐度为5的养殖环境中,罗氏沼虾幼虾终末体长和终末体质量最大,分别达(1.29±0.025)cm和(0.090±0.003)g。但在盐度为0~25的养殖环境中,罗氏沼虾幼虾的体长生长指标的差异不显著(P0.05),说明罗氏沼虾幼虾对盐度的适应范围较广。当盐度超过35时,罗氏沼虾幼虾的生长会变慢,成活率也会下降,与其他组之间存在显著的差异(P0.05)。
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| 关 键 词： | 饵料 盐度 罗氏沼虾 生长 存活率 |
Effect of Diet and Salinity on the Growth and Survival Rate of Juvenile Shrimps of Macrobrachium rosenbergii |
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| YANG Shiping,DING Shujun,SUN Chengbo,CHEN Zhaoming,WANG Chenggui.Effect of Diet and Salinity on the Growth and Survival Rate of Juvenile Shrimps of Macrobrachium rosenbergii[J].Journal of Tropical Biology,2014(2):101-106. |
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| Authors: | YANG Shiping DING Shujun SUN Chengbo CHEN Zhaoming WANG Chenggui |
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| Institution: | (College of Fisheries, Guangdong Ocean University, Zhanjiang 524088, China) |
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| Abstract: | Juvenile shrimps of Macrobrachium rosenbergii were fed with five foods under 9 different salinity levels,and their growth and survival rate were observed and analyzed.The results showed that the food and salinity had significantly different effect on the growth and survival rate of M.rosenbergii （P ＜ 0.05）.The shrimps feeding on Anemia nauplii and fish meat were significantly higher in growth parameters than the others （P ＜ 0.05）.M.rosenbergii feeding on Anemia nauplii showed an obviously higher growth and survival rate with the body length gain rate being （108.00 ±6.928）％ and the body weight gain rate （445.45 ±74.828）％ as well as the survival rate 92.67％.At the salinity level 5 the final body length and the final body weight also were maximum,（1.29 ± 0.025） cm and （0.090 ± 0.003） g,respectively.However,no significant difference was observed in the body length growth of M.rosenbergii feeding on the foods at the salinity levels from 0 to 25 （P ＞ 0.05）.This showed that M.rosenbergii adapted to a wide range of salinity.When the salinity level was over 35,M.rosenbergii had a significantly lower survival rate and growth rate at the salinity levels above 35 than at the other salinity levels （P ＜ 0.05）. |
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| Keywords: | diet salinity Macrobrachium rosenbergii growth survival rate |
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