对虾池悬浮颗粒附着细菌的研究

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.

A study on bacteria attached to suspended particles in shrimp ponds

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 atcached by 1,2,3 and 4 bacteria is 40%,27%,15% and 11% of the total particles attached by bacteria, respectively.The number of particles which attached more than 4 bacteria is only 70a of the total particles attached by bacteria. The percent of particles attached by bacteria is 52% to the numbers 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 rnrrelated with POC and DOC.