凡纳滨对虾生物絮团养殖系统中泡沫体积与生物絮团及环境的关系  

Relationship among foam volume,environment parameters and biofloc situation in biofloc system in Litopenaeus vannamei culture

作　　者：宋逸飞 张家松[2] 李贤 董登攀[1] 宋协法[1] SONG Yifei;ZHANG Jiasong;LI Xian;DONG Dengpan;SONG Xiefa(Fisheries College,Ocean University of China,Qingdao 266003,China;Key Laboratory of South China Sea Fishery Resources Exploitation&Utilization,Ministry of Agriculture and Rural Affairs,South China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Guangzhou 510300,China)

机构地区：[1]中国海洋大学水产学院,山东青岛266003 [2]中国水产科学研究院南海水产研究所,农业农村部南海渔业资源开发利用重点实验室,广东广州510300

出　　处：《水产学报》2024年第8期149-157,共9页Journal of Fisheries of China

基　　金：国家重点研发计划(2022YFD2001704)。

摘　　要：为探究生物絮团(BFT)系统中泡沫体积与生物絮团及环境因子的关系,以求通过泡沫体积判断生物絮团的运行情况。实验采用3组凡纳滨对虾生物絮团养殖系统进行100 d的实验研究,测定泡沫体积、水体表面张力及水环境因子等参数,选用Pearson相关系数进行相关性分析,研究泡沫体积变化与生物絮团、环境因子之间的关系。结果显示,泡沫体积与总氨氮(TAN)呈现较强的正相关性,相关系数为0.571。泡沫体积受生物絮团状况影响,与絮团体积(FV)呈负相关性,相关系数为−0.266。泡沫体积由增转降的日期与生物絮团开始形成的日期高度拟合,二者相差在5 d内。随着生物絮团的形成,泡沫体积逐渐降低。当生物絮团成熟稳定时,泡沫体积会维持在0.0110 m^(3)/t以下(1 t水体生成0.0110 m^(3)泡沫)。研究表明,可以通过泡沫体积的变化判断生物絮团的运行情况。本研究可提高生物絮团的可控性,对凡纳滨对虾生物絮团养殖技术的推广具有重要的指导意义。Biofloc technology(BFT)regulates the carbon-to-nitrogen ratio to promote the growth of heterotrophic bacteria,which assimilates ammonia nitrogen in the water into microbial nitrogen,reducing the accumulation of ammonia nitrogen during aquaculture and forming a biofloc consisting of bacteria,organic particles,extracellular polymers,and plankton.It is widely used in Litopenaeus vannamei culture.In practical production,relying solely on monitoring indicators such as pH,dissolved oxygen,total ammoniacal nitrogen(TAN),and nitrite nitrogen(NO_(2)^(−)-N)cannot comprehensively reflect the real-time formation progress and health status of biofloc.This limitation poses challenges to effective biofloc control,demanding the identification of more appropriate monitoring indicators to ensure biofloc stability.Within the biofloc culture system,foam is a surface feature.Therefore,studying the relationship between biofloc and foam,and identifying effective monitoring indicators is crucial for achieving adequate control over the operational status of the biofloc system.This approach is important in maintaining biofloc stability and ensuring safe production during aquaculture.This study employed three commercial biofloc culture systems for L.vannamei and conducted a 100-day experiment focusing on plankton and foam.Parameters such as foam volume,water surface tension,and water environment parameters were measured.By tracking and monitoring the changes in foam volume,the relationship between plankton,foam,and the operational status of the biofloc culture system was analyzed.This allowed for determining of the biofloc's operational condition through the patterns of foam volume.Pearson correlation coefficient was employed to analyze the correlation between foam volume,water surface tension,biofloc mass,water quality factors,and other parameters,investigating the relationship between foam volume and operation status of biofloc.The results revealed that water surface tension did not significantly affect foam.It also showed a positive c

关 键 词：凡纳滨对虾 生物絮团 泡沫 环境因子 指示作用 

分 类 号：S968.22[农业科学—水产养殖]