不同悉生培养条件下食细菌线虫对细菌种群的影响

应用生态学报 ›› 2003, Vol. ›› Issue (9): 1585-1587.

不同悉生培养条件下食细菌线虫对细菌种群的影响

陈小云, 胡锋, 李辉信, 毛小芳

南京农业大学资源与环境学院, 南京 210095

收稿日期:2001-11-09 修回日期:2002-03-12 出版日期:2003-09-15
通讯作者: 胡锋
基金资助:
国家自然科学基金资助项目(39970419)

Effect of bacterivorous nematodes on bacteria population under gnotobiotic culture

CHEN Xiaoyun, HU Feng, LI Huixin, MAO Xiaofang

College of Resources and Environmental Science, Nanjing Agricultural University, Nanjing 210095. China

Received:2001-11-09 Revised:2002-03-12 Online:2003-09-15

摘要/Abstract

Abstract: Agnotobiotic microcosm experiment was conducted to study the influence of bacterivorous nematodes (Protorhab-ditis sp.) on bacteria (Pseudomonas fluorescens) population under different conditions including substrate concentration, oscillation pattern, and numbers of nematodes inoculated.When the bacteria were incubated under intermittent oscillation by hand (6 times at 0.5 h intervals, 22℃), their growth was stimulated in the presence of nematodes, and the bacteria grew faster with the increase of nematode numbers and substrate (liquid potato-sucrose medium) concentration.However, when the incubation was under continuous oscillation (100 rpm, 22℃), bacteria population was deflated with the addition of nematodes, and the inhibition was greater when a higher concentration of substrate was used.It was found that the stimulation or inhibition of bacteria population by nematodes occurred in the logarithmic stage of bacteria growth.The optimal and over-grazing of nematodes on regulating bacteria population was discussed.

中图分类号:

Q938.1

陈小云, 胡锋, 李辉信, 毛小芳. 不同悉生培养条件下食细菌线虫对细菌种群的影响[J]. 应用生态学报, 2003, (9): 1585-1587.

CHEN Xiaoyun, HU Feng, LI Huixin, MAO Xiaofang. Effect of bacterivorous nematodes on bacteria population under gnotobiotic culture[J]. Chinese Journal of Applied Ecology, 2003, (9): 1585-1587.

参考文献

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