期刊
MARINE POLLUTION BULLETIN
卷 42, 期 11, 页码 1133-1138出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0025-326X(01)00113-8
关键词
Anodontia edentula; Philippines; ammonia; nitrite; phosphate; sulphide
Oxygen, sulphide and nutrient (ammonia, nitrite and phosphate) uptake of Anodontia edentula was measured. Oxygen and sulphide were measured from sealed containers provided with 1 l fresh mangrove mud (sulphide source) and seawater (oxygen source) with two treatments (with and without clam) at 16 replicates each. Oxygen, sulphide and other parameters were measured at days I (initial), 3 and 5 (final). Nutrients were measured from containers filled with 1.5 l wastewater from a milkfish broodstock tank with two treatments (with and without clam) at eight replicates each. Ammonia, NO2 and PO4 were measured at days 0 (initial) 3, 6, 9 and 12 (final). Results showed significantly decreasing oxygen and sulphide concentrations in treatment with clams (ANOVA, p<0.001). A significantly higher ammonia concentration (ANOVA, p<0.05) was observed in treatment with clams while no significant difference was observed in nitrite and phosphate between the two treatments. A decreasing ammonia and an increasing nitrite trend was also observed in both treatments starting at day 3. (C) 2001 Elsevier Science Ltd. All rights reserved.
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