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| 低盐胁迫对刺参存活、摄食和生长的影响 | |
| 作者姓名： | 胡炜 李成林 赵斌 邹安革 董晓亮 赵洪友 邹士方 尉淑辉 |
| 作者单位： | 1. 山东省海水养殖研究所,青岛,266002 2. 蓬莱市安源水产有限公司,265600 3. 山东省海水养殖研究所,青岛266002;中国海洋大学,青岛266003 4. 山东省莱阳市水产养殖总公司,265200 |
| 基金项目： | 国家“863”计划，山东省科技发展计划项目，山东省农业良种工程重点项目，山东省农业重大应用技术创新课题，山东省农业技术推广项目，山东省农业科技成果转化项目，青岛市科技计划项目 |
| 摘 要： | 采用实验生态学的方法设置包括自然海水在内的4个盐度组,分别为31(自然海水,对照组A)、26(B组)、22(C组)、18(D组)。按逐步降盐(DG)与盐度突变(DS)两种盐度变化模式对各组刺参进行盐度胁迫实验。结果表明,B组仅个别较小个体出现死亡现象,C组和D组刺参个体的DG与DS实验组的成活率均出现显著差异(P<0.05),DS-D组的成活率最低,仅为45.67%。不同盐度胁迫的各实验组之间,摄食率与食物转化率存在显著差异(P<0.05);而各实验组内,DG处理和DS处理的刺参个体的FR和FCR差异均未见显著(P>0.05)。B组内的两种降盐方式在降盐后的前10d生长有显著差异(P<0.05),之后20d内差异不显著(P>0.05)。C组和D组的刺参个体在实验中均出现体重负增长,与其余各组的SGR差异显著(P<0.05)。 |
| 关 键 词： | 刺参 低盐胁迫 摄食率 食物转化率 生长 |
| 收稿时间： | 2011/7/13 0:00:00 |
| 修稿时间： | 2011/11/25 0:00:00 |
Effects of low salinity stress on survival, growth and feeding rate of sea cucumber Apostichopus japonicus |
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| Authors: | HU Wei LI Cheng-lin ZHAO Bin ZOU An-ge DONG Xiao-liang ZHAO Hong-you ZOU Shi-fang WEI Shu-hui |
| Institution: | 1Mariculture Institute of Shandong Province, Qingdao 266002) (2Ocean University of China, Qingdao 266003) (3Penglai An Yuan Fisheries Co. Ltd,265600) (4Shandong Laiyang Aquaculture Corporation, 265200) |
| Abstract: | Survival, growth and feeding rate of sea cucumber Apostichopus japonicus were studied in two different salinity change modes (DG: salinity Decreased Gradually; DS: salinity Decreased Sharply). In each mode, sea cucumbers were kept in seawater at 4 different salinities (31-A, 26-B, 22-C, 18-D) for 30d. The results showed that there were only a few individuals died in group B. There was significant difference between group C and D in DG and DS modes (P<0.05). The lowest survival rate was in group DS-D as 45.67%. There was significantly different FR and FCR between treatments under different low salinity stress (P<0.05). However, no significantly different FR and FCR appeared between different salinity change modes (DG and DS) during the experimental period (P>0.05). In group B, there was significant difference on growth of sea cucumber between two salinity change modes in the first 10d after the salinity decreased (P<0.05), but no significant difference in the next 20d (P>0.05). During the experiment, there were negative growth in group C and D, being significantly different from the other groups (P<0.05). |
| Keywords: | Apostichopus japonicus Low salinity stress FR FCR Growth |
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