| 不同投喂率对南方鲇稚鱼生长和存活率的影响 |
| Impacts of Different Feeding Rates on the Growth and Survival Rate of Silur meridionalis Juvenile |
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| 中文关键词:南方鲇 投喂率 存活率 生长 |
| 英文关键词:Silur meridionalis feeding rate survival quotiety growth |
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| 中文摘要: |
| 以６个水丝蚓投喂水平培育６日龄南方鲇稚鱼，测定了不同投喂率下稚鱼的摄食水平、生长、存活率和残食率。结果表明，鱼苗体长小于５ｃｍ时，投喂鱼苗体重６０％的饵料鱼苗生长最快，特定生长率高达１９．１％；体长大于５ｃｍ时，体长增长和体重特定生长率以５０％投喂率组较高，但与６０％投喂率组的差异不显著。Ａ、Ｂ、Ｃ、Ｄ、Ｅ和Ｆ组（分别投喂３０％、４０％、５０％、６０％、７０％和８０％稚鱼体重的饵料）的存活率分别为５６％、７５％、８７％、８９％、９１％和９０％。Ａ、Ｂ组的残食率较高，分别是３０％和１９％；Ｅ、Ｆ组最小，分别是４％和４．５％。
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| 英文摘要: |
| Growth and survival rates of 6 day old Silur meridionalis juveniles feeding on Limnodrilus at 6 different levels for 21 days were investigated. The results showed that the juveniles at 60% feeding rate grew faster than any other levels when the body length was less than 5 centimeters and 50% feeding rate resulted in faster growth with more than 5 centimeters. The survival rates of group A,B,C,D,E and F（feeding quotiety were 30% ,40% ,50%, 60% ,70% and 80% ）were 56% ,75% ,89% ,93% ,94% and 91% respectively. The cannibal rate of A and B was 30% and 19%, higher than all other groups. The cannibal rate of group E and F was lower, 4% and 4.5% respectively. |
| 史则超,陈孝煊,王卫民,姬伟.2008.不同投喂率对南方鲇稚鱼生长和存活率的影响[J].水生态学杂志,29(1):93-0. |
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