长乐沿海食用双壳贝类及其可持续利用的研究

为了探讨长乐沿海食用双壳贝类的现状及其衰退的主要原因，以便保护和可持续利用这一水产资源，2005～2008年对长乐沿海食用双壳贝类和可持续利用进行调查研究。结果表明：长乐沿海有食用双壳贝类91种，隶属27科62属。较东海北部增加了翡翠贻贝（Perna viridis）、反转拟猿头蛤（Psendochama retroversa）、扭转蚶（Trisidos tortuosa）、大獭蛤（Lutraria maxima）、辐射英蛏（Siliqua radiata）、旗江珧（Atfrina vexillum）等亚热带的经济双壳贝类。岩相潮向带的团聚牡蛎（Saccostrea glomerata）生物量最高（3．56kg／m^2），附着密度为275个／m^2；砂相潮间带以中国蛤蜊（Mactra chinensis）生物量最高（2．06kg／m^2），栖息密度872个／m^2。年采捕量30t以上的种类有牡蛎（Oyster）、文蛤（Meretris spp．）、毛蚶（Scapharca spp）、中国蛤蜊4种。西施舌的群体分布比率，以低龄群体占优势。

Study on Edible Lamellibranch in Changle Inshore and Their Sustainable Utilization

This paper reported the research results of edible lamellibranch in coastland area of Changle and their sustainable utilization from 2005 to 2008.In this area,91 species of edible lamellibranch were belong to 62 genera and 27 families and collected.Some species such as Perna viridis,Psendochama retroversa,Trisidos tortuosa,Lutraria maxima,Siliqua radiata,Atrina vexillum were found in this area but not in northeast-sea.In rocky tideland area,Saccostrea glomerata had the highest biomass of 3.56 kg/m2 and adhesion density of 275/m2.In sandy tideland,Mactra chinensis had the highest biomass of 2.06 kg/m2 and adhesion density of 872/m2.Annual production of more than 30 tons was five species of Oyster,Meretris spp.Scapharca spp.and Mactra chinensis respectively.In the population distribution of Coelomactra antiquate,the young was dominated