水产学报2012，Vol.36Issue(10)：1585-1591,7.DOI:10.3724/SP.J.1231.2012.27843
象山港紫菜区和网箱区沉积物异养细菌的生态分布
Ecological distribution of bacteria in the sediment of the laver culture area and cage culture area in Xiangshangang Bay
摘要
Abstract
Microbiological investigation was performed to determine the mariculture impact on the ecological distribution of bacteria in the sediment of the laver culture area and cage culture area of Xiangshangang Bay in January and October,2006,and the results were compared with those in adjacent non-cultured area of cage and laver culture. Bacterial quantity presents a series of characters in sediment; Higher bacterial number was observed in Oct. than that in Jan. , and the horizontal distribution of bacterial quantity displayed that Cage culture area[ average of(9. 6 x 104 ±2. 0 × 105) cfu/g] ＞ Reference site near cage[ average of (1. 5 × 104 ± 2.4×104) cfu/g] ＞ Laver culture area [average of (4.3 × 103 ±1.6xl03) cfu/g] and Reference site near laver culture[average of(4. 7 ×103 ±3. 0 ×103) cfu/g]. 109 strains of heterotrophic bacteria isolated from laver culture area mainly belonged to 17 genera,and Bacillus and Coryneforms were the dominant genera.95 strains isolated from reference site near laver culture mainly belonged to 18 genera,and Bacillus and Coryneforms were the dominant genera. 136 strains isolated from cage culture area mainly belonged to 11 genera, and Bacillus, Coryneforms ,Pseudomonas ,Acinetobacter and Vibrio were the dominant genera. Bacteria in sediment under laver culture and reference site near laver culture were mostly common ones that appeared in marine sediment, and the microbial densities in these two areas were higher than that in cage culture area and reference site near cage. Because of long-term drainage of organic matters,cage culture sediment' s microbial density had reduced, its bacterial composition was similar to that in muddy sea areas, and the effect on bacterial community induced by culture has spread to its adjacent area. It is clear that there exist differences in the characters of bacterial ecological distribution in laver and cage culture areas, and bacterial quantitative distribution and community structures were closely related to self-pollution status of mariculture.关键词
细菌数量/群落组成/紫菜区/网箱区/象山港Key words
bacterial abundance/ bacterial community/ laver culture area/ cage culture area/Xiangshangang Bay分类
生物科学引用本文复制引用
刘晶晶,杜萍,曾江宁,陈全震,江志兵,寿鹿,廖一波..象山港紫菜区和网箱区沉积物异养细菌的生态分布[J].水产学报,2012,36(10):1585-1591,7.基金项目
国家重点基础研究发展计划项目(2010CB428903) （2010CB428903）
海洋公益性行业科研专项经费项目(2013418043-3,200805069) （2013418043-3,200805069）
浙江省自然科学基金项目(Y5100401) （Y5100401）
浙江省近岸水域生物资源开发与保护重点实验室开放基金项目(J2012003,2010F30003) （J2012003,2010F30003）
浙江省海水养殖重点科技创新团队项目(2010R50025) （2010R50025）
