| 史磊磊,范立民,陈家长,邴旭文,赵志祥,胡庚东,吴伟.组合填料对水质、罗非鱼生长及水体微生物群落功能多样性的影响[J].农业环境科学学报,2017,36(8):1618-1626. |
| 组合填料对水质、罗非鱼生长及水体微生物群落功能多样性的影响 |
| Effects of combined fillers on the water quality,growth of tilapia,and functional diversity of the microbial community in tilapia aquaculture water |
| 投稿时间：2017-01-18 |
| DOI：10.11654/jaes.2017-0107 |
| 中文关键词: 组合填料 罗非鱼 净化效果 微生物群落 碳代谢特征 |
| 英文关键词: combined filler tilapia purification effect microbial community carbon metabolism |
| 基金项目:国家科技支撑计划项目（2015BAD13B03） |
| 作者 | 单位 | E-mail | | 史磊磊 | 南京农业大学无锡渔业学院, 江苏 无锡 214081 | | | 范立民 | 中国水产科学研究院淡水渔业研究中心, 农业部长江下游渔业生态环境监测中心, 农业部淡水鱼类遗传育种和养殖生物学重点开放实验室, 江苏 无锡 214081 | | | 陈家长 | 南京农业大学无锡渔业学院, 江苏 无锡 214081
中国水产科学研究院淡水渔业研究中心, 农业部长江下游渔业生态环境监测中心, 农业部淡水鱼类遗传育种和养殖生物学重点开放实验室, 江苏 无锡 214081 | | | 邴旭文 | 南京农业大学无锡渔业学院, 江苏 无锡 214081
中国水产科学研究院淡水渔业研究中心, 农业部长江下游渔业生态环境监测中心, 农业部淡水鱼类遗传育种和养殖生物学重点开放实验室, 江苏 无锡 214081 | | | 赵志祥 | 南京农业大学无锡渔业学院, 江苏 无锡 214081 | | | 胡庚东 | 中国水产科学研究院淡水渔业研究中心, 农业部长江下游渔业生态环境监测中心, 农业部淡水鱼类遗传育种和养殖生物学重点开放实验室, 江苏 无锡 214081 | | | 吴伟 | 南京农业大学无锡渔业学院, 江苏 无锡 214081
中国水产科学研究院淡水渔业研究中心, 农业部长江下游渔业生态环境监测中心, 农业部淡水鱼类遗传育种和养殖生物学重点开放实验室, 江苏 无锡 214081 | wuw@ffrc.cn |
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| 中文摘要: |
| 采用组合填料（全塑性夹片和维纶醛化丝）作为生物膜载体，以土著微生物为生物膜菌源，研究其对水质、罗非鱼生长及水体微生物群落功能多样性的影响。结果表明：组合填料可促进水体中NO2-、DO、IC含量显著升高，使水体中pH、NO3-含量显著下降，同时有使水体中NH4+、TOC含量下降的趋势；和对照组相比，组合填料组罗非鱼增重量显著升高，饵料系数显著降低，填料悬挂密度越高，增重效果越明显；组合填料能显著降低水体细菌数量，而对水体微生物多样性无显著影响；组合填料明显提高了水体微生物对糖类、醇类、酯类的利用率，降低了水体微生物对胺类和酸类的利用率。RDA分析表明，组合填料组和对照组之间的水体微生物代谢多样性存在一定的差异，而DO、pH和硝酸盐是影响处理组和对照组水体微生物代谢多样性差异的主要环境因子，显示组合填料在一定程度上可有效改善水质，促进罗非鱼生长，降低水体细菌数量，影响水体微生物群落功能多样性。 |
| 英文摘要: |
| Combined fillers were used as attachment carriers for indigenous microorganisms to study their effects on the water quality, growth of tilapia, and functional diversity of the microbial community in tilapia aquaculture water. The results showed that the combined fillers affected the water quality by increasing the concentrations of nitrite, dissolved oxygen, and inorganic carbon and by decreasing the concentration of nitrate and pH values in these aquaculture systems. At the same time, the concentrations of ammonia nitrogen and total organic carbon in these systems presented falling trends. In addition, the combined fillers significantly increased weight gain in the tilapia and reduced the feed coefficients. Moreover, with the suspension density increasing, the feed coefficients decreased. The combined fillers reduced the number of bacterial strains, but it had no significant effect on the alpha diversity of microorganisms presented via the Shannon, Simpson, McIntosh, and richness indices for these aquaculture systems. Nevertheless, the combined fillers improved the utilization rate of carbohydrates, alcohols, and esters by microorganisms, and reduced these substances to amines and acids in the process. Furtherly, RDA analysis not only showed the differences in functional diversity of the microbial community between the treated group and the control group in these systems, but also showed that the variations in functional diversity of the microbial community were more related to the changes of DO, pH, and nitrate. To summarize, the combined fillers could reduce the number of bacterial strains and affect the functional diversity of the microbial community. In addition, they could effectively improve the water quality and promote the growth of tilapia. |
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