CAJ | 학술논문

在水温为(17.5±0.5)℃的条件下，研究了泥沙悬浮物对菲律宾蛤仔 Ruditapes philippinarum幼贝(壳长为7.28 mm±0.40 mm)存活、生长和滤水率的影响。急性试验结果表明，悬浮物浓度(均为实测浓度)在9888 mg/L以下时，蛤仔幼贝96 h的存活率为100%。亚急性试验(20 d)结果表明：随着悬浮物浓度的增加，试验水中氨氮、亚硝酸氮和化学需氧量( CODMn )的含量随之增加；悬浮物浓度为300 mg/L或以上时，对蛤仔幼贝的生长有显著影响(P<0.05)。滤水率试验(胁迫12 d)结果表明，悬浮物浓度为300 mg/L时，对蛤仔幼贝的滤水率有显著影响(P<0.05)。研究表明，对蛤仔幼贝生长和滤水率没有影响的悬浮物最大允许浓度在188~300 mg/L。
재수온위(17.5±0.5)℃적조건하，연구료니사현부물대비률빈합자 Ruditapes philippinarum유패(각장위7.28 mm±0.40 mm)존활、생장화려수솔적영향。급성시험결과표명，현부물농도(균위실측농도)재9888 mg/L이하시，합자유패96 h적존활솔위100%。아급성시험(20 d)결과표명：수착현부물농도적증가，시험수중안담、아초산담화화학수양량( CODMn )적함량수지증가；현부물농도위300 mg/L혹이상시，대합자유패적생장유현저영향(P<0.05)。려수솔시험(협박12 d)결과표명，현부물농도위300 mg/L시，대합자유패적려수솔유현저영향(P<0.05)。연구표명，대합자유패생장화려수솔몰유영향적현부물최대윤허농도재188~300 mg/L。
The effects of increase in suspended sediment concentration on survival rate, growth and filtration rate of juvenile Manila clam Ruditapes philippinarum with shell length of 7 . 28 mm±0 . 40 mm at water temperature of (17. 5±0. 5)℃ in a laboratory. Acute test showed that Manila clam had survival rate of 100% at suspended sedi-ment concentration( determined concentration) of less than 9888 mg/L for 96 h. Chronic test (20 d) showed that levels of ammonia, nitrite and CODMn were found increase with elevated suspended sediment concentration. Signifi-cantly poor growth was observed in the Manila clam exposed to suspended sediment concentration of over 300 mg/L ( P<0 . 05 ) . The significantly lower filtration rate was found in the Manila clam exposed to suspended sediment con-centration of 300 mg/L for 12 days(P<0. 05). The maximum allowable suspended sediment concentration without effect on growth and filtration was between 188 and 300 mg/L.