美国硬壳蛤(mercenariamercenaria)又称小圆蛤、北方帘蛤或美洲帘蛤,该贝属广温、广盐性种类,对环境耐性强,适于不同底质养殖,生长速度较快,两周年可达商品规格50～60毫米壳长以上。我站2003年承担了省水产三项工程项目,于2003～2004年从浙江省海洋水产养殖研究所引进苗种20万 American hard shell clams (Mercenaria mercenaria), also known as the small round clams, northern clams or American curtain clams, the shellfish wide temperature, wide salt species, environmental resistance, suitable for different substrate culture, the growth rate is fast, two Anniversary up to 50 ~ 60 mm shell size specifications above. I station in 2003 assumed three provincial aquatic projects, from 2003 to 2004 from the Zhejiang Institute of Marine Aquaculture introduced seed 200,000