乐清湾泥蚶、缢蛏体内及养殖水环境细菌菌群的初步调查

本文对浙江省乐清湾滩涂和池塘养殖的泥蚶和缢蛏体内及养殖环境细菌菌群组成进行了初步调查。2000年7月—2001年7月间分四个季度进行采样分析。细菌总数分析表明，蒲歧和翁样海水中细菌总数在10^3—10^5个／mL之间，蒲歧和翁样两地每次海水样品部是池塘细菌总数高于滩涂；无论哪个季节和采样点，在一年内泥蚶和缢蛏体内的细菌总数均高于水中的细菌总数，且缢蛏体内细菌总数高于泥蚶，翁样贝体内细菌总数几乎均高于蒲歧贝体内细菌总数。对贝体内细菌属组成分析表明，在不同季节，同一滩涂或池塘中泥蚶和缢蛏体内菌群的组成及优势菌属比较相近，蒲歧滩涂和池塘、翁样滩涂和池塘贝体内菌群的组成及优势菌属具有一定的相似性；贝体内细菌优势菌属具有明显的季节性变化，在夏季(2001年7月31日)，以弧菌属和气单胞菌属占优势，而在冬季则以莫拉氏菌属占优势。

Preliminary Investigation on Bacteria Colonies in Clams and Their Living Environment in Leging Bay

The bacterial colonies in clams and their living environment were preliminarily investigated in Leqing Bay, Zhejiang province from July 2000 to July 2003. The total bacterial numbers in seawater from Leqing Bay were about 103 to 105 cfu/mL. In any seasons and sampling sites the total bacterial numbers in pond seawater, in clams, in Agarnaki clam, and in clams from Wengyang site, were large than those in sea beach water, in seawater, in Arca granosa and from Puyi site, respectively. In different seasons the same ponds or sea beaches were relatively similar in the bacterial colonies and dominant groups. The dominant bacterial colonies in clams fluctuated seasonally, which were Vibrio and Aeromonas in summer and Moraxella in winter.