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研究了不同浓度蛭弧菌在西施舌幼虫培养中的应用,在温度26～27℃,以人工授精发育的西施舌幼虫为材料,测定水中氨氮、亚硝态氮浓度和pH值,并计算幼虫的生长速率以及成活率,与对照组进行比较,实验表明,氨氮浓度最多比对照组降低34%(P<0.05),亚硝态氮浓度最多降低25%(P<0.05)。结果表明,蛭弧菌100mg/L为最适浓度,在一定程度上降低水中氨氮和亚硝态氮浓度,并促进西施舌壳顶幼虫的生长,其生长速率高于对照组22%,成活率高于对照组13%,差异显著(P<0.05),但对pH值影响不显著。
The effects of different concentrations of Bdellovibrio spp. On the culture of Xishuangongjiang larvae were studied. The concentrations of ammonia nitrogen and nitrite nitrogen and the pH value were determined at the temperature of 26-27 ℃ by using the developed larvae of Xishizanyi for artificial insemination. The results showed that ammonia nitrogen concentration was reduced by 34% (P <0.05) and that of nitrite nitrogen (25%) at most (P <0.05) compared with the control group. The results showed that the optimal concentration of Bdellovibrio 100mg / L, to a certain extent, reduce the concentrations of ammonia nitrogen and nitrite nitrogen in water and promote the growth of the top shell larvae of Castanopsis xylorus, the growth rate is higher than that of the control group 22%, the survival rate Higher than the control group 13%, the difference was significant (P <0.05), but the pH value was not significant.