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对广东珠三角地区,凡纳滨对虾低盐度高产虾池环境微生物调查结果,养殖水体异养菌平均数量为5.15×104cfu·mL-1,致病性弧菌为5.00×103cfu·mL-1,池底泥浆中异养细菌平均数量为2.41×106cfu·mL-1,致病性弧菌为1.45×105cfu·mL-1。不同虾池异养细菌的数量差别小而稳定,致病性弧菌的数量差别及波动大。淤泥较深的老化虾池,水体和泥浆中异养细菌平均分别为6.10×104cfu·mL-1和2.89×106cfu·mL-1,致病性弧菌为6.00×103cfu·mL-1和2.14×105cfu·mL-1;无淤泥虾池水体和泥浆中异养细菌平均分别为4.53×104cfu·mL-1和2.08×106cfu·mL-1,致病性弧菌为4.34×103cfu·mL-1和9.86×104cfu·mL-1。老化虾池底泥致病性弧菌明显偏高,成为老化虾池易爆发虾病的重要原因。低盐度虾池水体异养菌和致病性弧菌的数量变化,表现为养殖前期高,中后期低而稳定;池底泥浆中异养菌和致病性弧菌的数量变化,呈不规则波动。高的养殖水温对养殖环境异养菌和致病性弧菌表现抑制作用,养殖环境微生物与水体浮游藻类也有一定的关系。
In the Pearl River Delta of Guangdong Province, the survey results of environmental micro-organisms of shrimp ponds with low salinity and high yield of Litopenaeus vannamei showed that the average number of heterotrophic bacteria in aquaculture water was 5.15 × 104 cfu · mL-1 and that of pathogenic Vibrio was 5.00 × 103 cfu · mL-1 , The average number of heterotrophic bacteria in bottom mud was 2.41 × 106cfu · mL-1, and the pathogenic Vibrio was 1.45 × 105cfu · mL-1. The difference in number of heterotrophic bacteria in different shrimp ponds is small but stable, and the number of pathogenic Vibrio spp. Fluctuates greatly. The average age of heterotrophic bacteria in the aged shrimp ponds, water bodies and muds was 6.10 × 104 cfu · mL-1 and 2.89 × 106 cfu · mL-1, respectively. The pathogenic Vibrio species was 6.00 × 103 cfu · mL-1 and 2.14 × 105cfu · mL-1. The average number of heterotrophic bacteria in mud-free shrimp ponds was 4.53 × 104 cfu · mL-1 and 2.08 × 106 cfu · mL-1, respectively. The pathogenic Vibrio species was 4.34 × 103 cfu · mL-1 and 9.86 × 104 cfu · mL-1. The pathogenic Vibrio of the aged shrimp ponds was obviously high, which became an important reason for the shrimp disease of the aged shrimp ponds. The number of heterotrophic bacteria and pathogenic Vibrio in low-salinity shrimp pond water body showed the characteristics of high and low middle and late stage of culture, the number of heterotrophic bacteria and pathogenic Vibrio in pond bottom mud, Rules fluctuate. High breeding water temperature on the aquaculture of heterotrophic bacteria and pathogenic Vibrio inhibition, culture of environmental microorganisms and water body algae also have a certain relationship.