粤东深澳湾养殖区域异养细菌和弧菌的动态分布

doi:10.11978/j.issn.1009-5470.2010.06.110

热带海洋学报 ›› 2010, Vol. 29 ›› Issue (6): 110-117.doi: 10.11978/j.issn.1009-5470.2010.06.110cstr: 32234.14.j.issn.1009-5470.2010.06.110

粤东深澳湾养殖区域异养细菌和弧菌的动态分布

杜虹, 黄显兵, 郑兵, 陈伟洲, 庄东红, 胡忠

广东省汕头大学生物系, 广东汕头 510063

收稿日期:2009-03-25 修回日期:2009-06-15 出版日期:2010-12-15 发布日期:2010-12-15
作者简介:杜虹(1976—), 女, 广东省汕头市人, 博士, 主要从事近岸水域生态学和海洋环境保护方面的研究,.E-mail: hdu@stu.edu.cn
基金资助:
广东省科技计划重点项目(2006A36502001, 2007A032600003)

Dynamics of heterotrophic bacteria and vibrios in mariculture area of Shen’ao Bay, east Guangdong Province

DU Hong, HUANG Xian-bing, ZHENG Bing, CHENG Wei-zhou, ZHUANG Dong-hong, HU Zhong

Department of Biology at Shantou University in Guangdong Province, Shantou 510063, China

Received:2009-03-25 Revised:2009-06-15 Online:2010-12-15 Published:2010-12-15
About author:杜虹(1976—), 女, 广东省汕头市人, 博士, 主要从事近岸水域生态学和海洋环境保护方面的研究,.E-mail: hdu@stu.edu.cn
Supported by:
广东省科技计划重点项目(2006A36502001, 2007A032600003)

摘要/Abstract

摘要：

调查于2007年1月至2008年12月进行, 对异养细菌和弧菌丰度的时间和空间分布开展了相关的研究, 结果显示深澳养殖海湾水体中以上2种被调查菌类的丰度全年变化范围分别为1.20×105―1.27×108cfu•L?1和1.00×103―3.90×105cfu•L?1; 底质中的丰度变化范围分别为2.73×104―4.06×107cfu•g?1和3.25×102―7.23×104cfu•g?1。从时间上来看, 营养盐类与异养细菌的相关性要强于温度、盐度、pH值和溶氧等物理因素的相关性; 而弧菌与物理因素的相关性要强于与营养盐类的相关性。从空间分布来看水体环境的变化要比底质的大, 水体中经常出现异养细菌和弧菌丰度的剧烈变化, 变化程度也远远高于底质中细菌的变化。而且不同的养殖活动也会很明显地影响异养细菌和弧菌的丰度: S3站位水体中异养细菌的丰度比底质中的高; S5站位的底质中异养细菌和弧菌的丰度都是较高的。龙须菜的养殖可以很明显地改善底质环境, 特别是降低底质中对养殖和水质环境有很大负面影响的生物和非生物因子如硫化物和弧菌等。

关键词: 深澳湾, 异养细菌, 弧菌, 时空变化, 主成分分析

Abstract:

The spatio-temporal dynamics of heterotrophic bacteria (HB) and Vibrios bacteria in the Shen’ao Bay were studied based on a two-year sampling from Jan. 2007 to Dec. 2008. The results showed that the abundances of HB and Vibiros bacteria in the water body ranged from 1.20×105 to 1.27×108 and 1.00×103 to 3.90×105cfu•L?1, respectively, while those in the sedi-ment only ranged from 2.73×104 to 4.06×107 and 3.25×102 to 7.23×104cfu•g?1, respectively. Stronger fluctuations were also found in the abundances of HB and Vibiros bacteria from water body than those from sediment, possibly in responses to highly changing environmental factors of water body, especially nutrients. In fact, significant correlations were recorded between the abundances of HB and Vibiros bacteria and nutrients (N and P). At the same time, the distribution patterns of HB or Vibiros in this study varied with different aquaculture activity. In the seaweed (Gracilaria sp.) culture area (S3), the abundance of HB in the water body was much higher than that in the sediment. However, in the cage-culture area (S5), higher abundances of HB and Vibiros bacteria were found in the sediment. These results may suggest that seaweed culture (e.g. Gracilaria sp.) can im-prove the sediment quality, especially those factors that can cause detrimental effects on aquaculture animals and water quality including abiotic and biotic ones, such as sulfide and Vibrios bacteria.

Key words: Shen’ao Bay, Heterotrophic bacteria, Vibrios bacteria, spatiotemporal patterns, PCA

杜虹,黄显兵,郑兵,陈伟洲,庄东红,胡忠. 粤东深澳湾养殖区域异养细菌和弧菌的动态分布[J]. 热带海洋学报, 2010, 29(6): 110-117.

DU Hong,HUANG Xian-bing,ZHENG Bing,CHENG Wei-zhou,ZHUANG Dong-hong,HU Zhong. Dynamics of heterotrophic bacteria and vibrios in mariculture area of Shen’ao Bay, east Guangdong Province[J]. Journal of Tropical Oceanography, 2010, 29(6): 110-117.

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粤东深澳湾养殖区域异养细菌和弧菌的动态分布

Dynamics of heterotrophic bacteria and vibrios in mariculture area of Shen’ao Bay, east Guangdong Province

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