对虾池悬浮颗粒附着细菌的研究

A study on bacteria attached to suspended particles in shrimp ponds

用5个实验围隔研究了对虾池悬浮颗粒上的附着细菌，结果表明：附着细菌数量波动在0．65×104～23．49×104个／cm3之间，平均为（4．57±3．64）×104个／cm3，占水体细菌总数的1．47％×1．41％（0．28％～8．73％）．附着细菌数为1、2、3、4个的附菌颗粒占总附菌颗粒的比数分别为40％、27％、15％及11％，多于4个附着细菌的附菌颗粒数仅占总附菌颗粒数的7％；总悬浮颗粒中的附菌颗粒所占比例为52％；附着细菌数与水体总悬浮颗粒数关系最为密切，与水温及总细菌数也具有显著相关性，但与水层POC及DOC含量却未呈现显著的相关性．

Bacteria attached to suspended particles in shrimp ponds are studied with five experimental enclosures and several important results are obtained. The number of those bacteria fluctuated between 0. 65 ×104 and 23. 49 ×104 ind /cm3, averaged (4. 57 ×104±3. 64 ×104) ind ·/cm3, and is 1. 47% (0. 28%~8. 73%) of the total bacteria. The number of Particles which attached by 1, 2, 3 and 4 bacteria is 40%, 27%, 15% and 11% of the total particles attached by bacteria, respectively. The numberof articles which attached more than 4 bacteria is only 7% of the total particles attached by bacteria. The percent of Particles attached by bacteria is 52% to the numbes of total particles. There is an obvious correlation between the number of bacteria attached to particles and the number of total particles. The number of particle-bound bacteria is correlated positively with water temperature and the total number of bacteria, but is not correlated with POC and DOC.