CAJ | 학술논문

泥螺(Bullacta exarata)作为黄河三角洲区域成功引入的滩涂养殖种类，为当地获得了巨大的经济效益，但对其生态影响还了解不多。为了解该区域泥螺体内重金属含量并评价其生物质量，于2012年8月对该区域进行泥螺和沉积物样品采集调查和分析。采用富集系数 K、残留量指数 I 以及金属污染指数IMP进行分析。结果表明，黄河三角洲沉积物及泥螺体内6种重金属含量均相对较低，多数符合国家海洋沉积物质量标准第一类。泥螺对不同重金属的富集系数 K 有明显差别，其中对 Cu 和 Cd 的富集能力最强。残留量指数 I富集系数K及金属污染指数IMP均表明，黄河三角洲潮间带泥螺对重金属的富集程度均较低，说明该海域泥螺未受到重金属离子的污染。根据国家生物质量标准分析，黄河三角洲潮间带泥螺的生物质量总体较好，生物体内重金属含量总体上与海水中重金属含量无显著的相关性。
니라(Bullacta exarata)작위황하삼각주구역성공인입적탄도양식충류，위당지획득료거대적경제효익，단대기생태영향환료해불다。위료해해구역니라체내중금속함량병평개기생물질량，우2012년8월대해구역진행니라화침적물양품채집조사화분석。채용부집계수 K、잔류량지수 I 이급금속오염지수IMP진행분석。결과표명，황하삼각주침적물급니라체내6충중금속함량균상대교저，다수부합국가해양침적물질량표준제일류。니라대불동중금속적부집계수 K 유명현차별，기중대 Cu 화 Cd 적부집능력최강。잔류량지수 I부집계수K급금속오염지수IMP균표명，황하삼각주조간대니라대중금속적부집정도균교저，설명해해역니라미수도중금속리자적오염。근거국가생물질량표준분석，황하삼각주조간대니라적생물질량총체교호，생물체내중금속함량총체상여해수중중금속함량무현저적상관성。
The mud snail Bullacta exarata (Philippi, 1848) belongs to the Atyidae, Gastropoda, Mollusca. It is commonly distributed in the intertidal zone along the coasts of Chinese seas, especially in Zhejiang and Shandong Province, and also in Japan and North Korea. B. exarata is surface deposit-feeding, and it has no clear preference for specific food types, and can consume sources including benthic diatoms, organic detritus, small Crustacean spe-cies and eggs of invertebrate (Yu et al, 2003). As a very important economic species, mud snail had been cultured since the 1980s in China, and many researches had been carried out on its behavior characteristics, reproductive biology and development, ecotoxicology, population characters and spatial distribution. B. exarata was firstly in-troduced to the Yellow River Delta in 2001 for aquaculture in the intertidal zone. Since then, the snail has quickly spread out in this area, and its harvest was up to 50 thousand tons in 2005, with the output value of 300 million Renminbi (RMB) and a net profit of 280 million. The aim of this paper was to investigate the current status of trace metal in the mud snail and to evaluate the biological quality. Samples of mud snail and sediment were collected at the intertidal zone of Yellow River Delta in August, 2012. The results showed that the concentrations of six trace medals both in the sediment and mud snail were relatively low. The accumulation of different trace metals by mud snail was different, of which, the Cu and Cd were the two dominant metals. Compared to the criterion of Chinese marine biological quality, the mud snail in the research area was safe for human beings.