【摘要】 为探讨养殖模式对方斑东风螺生长及养殖系统主要环境因子的影响,开展方斑东风螺与玉足海参、细基江蓠的多营养层次综合养殖。试验结果显示,细基江蓠、玉足海参与东风螺混养可显著促进东风螺的生长,养殖成活率提高10.42%,养殖产量提高28.48%,饵料效率提高3.21%;江蓠对养殖水体中氨氮、亚硝酸盐氮有较好的净化作用,吸收率分别为60.2%、62.4%;玉足海参对养殖底沙中总氮、总磷、有机碳的去除率分别为40.8%、41.4%、37.9%,显著改善养殖底沙环境;整个养殖过程中,养殖水体弧菌、底沙弧菌和东风螺体内弧菌密度均未出现较大波动。更多还原

【Abstract】 To explore the effects of culture model on growth and main environmental factors in culture system, the integrated multi-trophic aquculture(IMTA) of snail Babylonia arelata, sea cucumber Holothuria leucospilota and seaweed Gracilaria tenuistipitata were studied. The results showed that IMTA significantly promoted the growth of B. arelata, the survival rate increase by 10.42%, the output increase by 28.48%, and the feed efficiency increase by 3.21%. G. tenuistipitata had function of purifying of ammonia-nitrogen and nitrite-nitrogen, with the corresponding absorption rates of 60.2%, and 62.4%, respectively. The removal rates were found to be 41.4% in total phosphorus of the H. leucospilota, 40.8% in total nitrogen, and 37.9% in organic carbon in the bottom sediment, significantly improving the environment of the bottom sediment. During the whole aquaculture, there was no large fluctuation in Vibrio quantity in water, bottom sediment and B. arelata.更多还原