CAPABILITY OF SEA CUCUMBER Holothuria scabra TO REMOVE NITROGEN AND PHOSPHOR WASTE FROM SHRIMP PONDS CULTURE

Q4 Environmental Science
E. Supriyono, K. Nirmala, K. Sabilu, Wa Iba Wa Iba, Murni Sabilu
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引用次数: 0

Abstract

Solid organic waste (PSW) in shrimp ponds contains relatively high levels of nitrogen and phosphorus and can endanger the ecological balance of the waters. This study evaluates the ability of sea cucumber Holothuria scabra to remove nitrogen and phosphorus loads from shrimp pond sediment waste in water and sediment. Sea cucumbers were reared for 40 days with a density of 20 individuals/m2 (average body weight 2.65±0.09 g) and a double-bottom recirculation system. Five levels of PSW accumulation were inserted into the aquarium substrate and were the sole source of nutrition for sea cucumbers without additional feeding: 10%, 20%, 30%, 40%, and 50% (with three replications). The results showed that increasing the PSW content in the aquarium research substrate significantly increased the substrate's TOC, TN, and TP content and increased the concentrations of TOM, DOC, NH3, NO2, and PO4 in the water column. The activity of sea cucumbers in utilizing PSW nutrients in all treatments up to a PSW level of 50% significantly reduced TOC, TN, and TP in sediments. This activity also substantially removes the concentration of TOM, DOC, NH3, NO2, and PO4 in the water. It is estimated that every kilogram of H. scabra can remove up to 12.65-12.73 g of nitrogen/day and 2.57-2.60 g of phosphorus/day contained in the solid organic waste of shrimp ponds. Therefore, this study concluded that H. scabra has great potential to be used as integrated multi-trophic aquaculture (IMTA) species, especially to remove nitrogen and phosphorus loads from shrimp pond sediment waste in waters.
黑斑海参去除虾池养殖中氮磷废物的能力
虾池中的固体有机废物(PSW)含有相对较高的氮和磷,可能危及水域的生态平衡。本研究评估了海参对虾池沉积物中氮和磷负荷的去除能力。海参饲养40天,密度为20个体/m2(平均体重2.65±0.09g),采用双层底部再循环系统。将五个水平的PSW积累插入水族馆基质中,这是海参在没有额外喂养的情况下的唯一营养来源:10%、20%、30%、40%和50%(三次重复)。结果表明,水族馆研究基质中PSW含量的增加显著增加了基质的TOC、TN和TP含量,并增加了水柱中TOM、DOC、NH3、NO2和PO4的浓度。在所有处理中,当PSW水平达到50%时,海参利用PSW营养物质的活性显著降低了沉积物中的TOC、TN和TP。这种活性还基本上去除了水中TOM、DOC、NH3、NO2和PO4的浓度。据估计,每公斤刀鞘虾每天可去除虾池固体有机废物中的12.65-12.73克氮和2.57-2.60克磷。因此,本研究得出结论,H.scabra作为综合多营养水产养殖(IMTA)物种具有巨大的潜力,特别是在去除虾池沉积物中的氮和磷负荷方面。
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来源期刊
Indonesian Aquaculture Journal
Indonesian Aquaculture Journal Environmental Science-Water Science and Technology
CiteScore
0.50
自引率
0.00%
发文量
9
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