机构地区: 华南农业大学食品学院
出 处: 《广东农业科学》 2013年第10期131-133,共3页
摘 要: 于2011年5月和9月对杭州湾北岸大金山岛潮间带区牡蛎种群数量开展了生态调查,通过16SrDNA基因序列分析发现,分布于潮间带区的鲜活牡蛎全部为近江牡蛎(Crassostreaariakensis);5月近江牡蛎平均密度和生物量分别为941(±106)个/㎡和13006(±1509)g/㎡,9月近江牡蛎平均密度和生物量分别为821(±69)个/m。和14124(-+1470)g/㎡,两个月份间近江牡蛎的平均密度和生物量均没有显著性差异;在种群大小频率构成中,以壳高(SH)介T40~45mm的群体最多;5月和9月可收获牡蛎(SHt〉70mm)的平均密度分别达到26个/㎡和55个/㎡。 The study investigated the abundance of the oyster population in the intertidal zone of Dajinshan island in the Hangzhou bay in May and September, 2011. All live oysters were identified as Suminoe oyster (Crassostrea ariakensis) based on 16S rDNA gene sequence analysis. The mean densities and biomass of the oyster (941±106 ind/m2 and 13 006±1 509 g/m2) in May had no significant differences with the values (821±69 ind/㎡ and 14 121±1 470 g/m2) in September. It was found that the individuals with shell height of 40-45 mm dominated the oyster population based the size-frequency distribution. The market-slzed oysters (SH ≤ 70 ram) in May and September held the mean densities of 26 ind/㎡ and 55 ind/㎡, respectively.