| 摘要: |
| 在室内水泥池条件下, 对平均体质量为65.3 g±1.52 g 的锯缘青蟹(Scylla Serrata)进行了30 d 的养殖实验, 分别测定其在两种不同盐度和有无水流条件下的蜕壳率和存活率。实验结果表明,盐度15 组和25 组青蟹成活率差异不显著(P﹥ 0.05), 但在蜕壳方面盐度15 组明显快于盐度25 组(P﹤ 0.05); 水流对青蟹的蜕壳无明显促进作用, 但有水流组的存活率显著高于无水流组(P﹤ 0.05)。因此, 软壳蟹养殖应在适当降低盐度情况下, 增加一定量的水流。 |
| 关键词: 锯缘青蟹(Scylla Serrata) 盐度 水流 蜕壳率 存活率 |
| DOI： |
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| 基金项目:中央级公益性科研院所基本科研业务费专项资金项目2007M21 |
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| Effects of salinity and water current on the molting and survival rate of Scylla Serrata |
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YU Zhong-li,QIAO Zhen-guo,WANG Jian-gang
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| Abstract: |
| Scylla Serrata (average weight, 65.3 ± 1.52 g) had a 30-days breeding in indoor cement pools; and the survival rate and molting rate in two different salinities with or without water current were measured. The survival rates of bred under 15 ‰ and 25 ‰ salinity were not significantly different (P﹥> 0.05); but the molting rate of the group of 15 ‰ salinity was significantly faster than that of the group of 25 ‰ salinity (P﹥< 0.05). Water current played no significant positive role on the molting, but signicantly increased the survival rate (P﹥<0.05). Therefore, low salinity and appropriate water current should be beneficial to the soft-shell crab breeding. |
| Key words: Scylla Serrata salinity water current molting rate, survival rate |
