By using the methods of qualitative and quantitative analysis, the species composition and dominant genus of harmful ciliates in young abalone culture ponds are studied. Totally 68 ,species of ciliates, belonging to 3...By using the methods of qualitative and quantitative analysis, the species composition and dominant genus of harmful ciliates in young abalone culture ponds are studied. Totally 68 ,species of ciliates, belonging to 3 classes16 orders and 46 genus, are found. The dominant ciliate species are Aspidisca leptaspis, Vorticella sp. and Euplotes rariseta. During the young abalone cultivation, the numbers of young abalones increase first, and then show a trend of decreasing. The relationship between the density and composition of ciliates and the density of algae in the young abalone culture ponds is also discussed.展开更多
于2010年5月、7月、8月和10月对桑沟湾筏式养鲍区的沉积环境进行现场调查,采用挪威海洋研究所建立的鱼类养殖环境监测系统模型(Modelling-Ongrowing fish farms-Monitoring,MOM system),应用MOM-B着重对鲍养殖区的沉积环境状况进行监测...于2010年5月、7月、8月和10月对桑沟湾筏式养鲍区的沉积环境进行现场调查,采用挪威海洋研究所建立的鱼类养殖环境监测系统模型(Modelling-Ongrowing fish farms-Monitoring,MOM system),应用MOM-B着重对鲍养殖区的沉积环境状况进行监测和评价,由生物、化学和感官指标组组成。生物指标组的结果显示,各站位都有大型底栖动物,鲍养殖区处于1,2或者3等级。根据化学指标组(pH值和氧化还原电位Eh)和感官指标组(颜色、气味、气泡、粘稠度等)的监测结果进行了进一步的评价,结果显示,各站位的pH>7.0,为弱碱性,沉积物都无气泡产生,无臭味或硫化氢气味。鲍养殖区的沉积环境状况整体良好,5月和7月为1级,8月和10月为2级。虽然鲍养殖区目前的沉积环境状况较好,但需要注意的是8月和10月Eh<0,沉积环境已经处于还原状态,可能与鲍养殖压力有关。展开更多
文摘By using the methods of qualitative and quantitative analysis, the species composition and dominant genus of harmful ciliates in young abalone culture ponds are studied. Totally 68 ,species of ciliates, belonging to 3 classes16 orders and 46 genus, are found. The dominant ciliate species are Aspidisca leptaspis, Vorticella sp. and Euplotes rariseta. During the young abalone cultivation, the numbers of young abalones increase first, and then show a trend of decreasing. The relationship between the density and composition of ciliates and the density of algae in the young abalone culture ponds is also discussed.
文摘于2010年5月、7月、8月和10月对桑沟湾筏式养鲍区的沉积环境进行现场调查,采用挪威海洋研究所建立的鱼类养殖环境监测系统模型(Modelling-Ongrowing fish farms-Monitoring,MOM system),应用MOM-B着重对鲍养殖区的沉积环境状况进行监测和评价,由生物、化学和感官指标组组成。生物指标组的结果显示,各站位都有大型底栖动物,鲍养殖区处于1,2或者3等级。根据化学指标组(pH值和氧化还原电位Eh)和感官指标组(颜色、气味、气泡、粘稠度等)的监测结果进行了进一步的评价,结果显示,各站位的pH>7.0,为弱碱性,沉积物都无气泡产生,无臭味或硫化氢气味。鲍养殖区的沉积环境状况整体良好,5月和7月为1级,8月和10月为2级。虽然鲍养殖区目前的沉积环境状况较好,但需要注意的是8月和10月Eh<0,沉积环境已经处于还原状态,可能与鲍养殖压力有关。