摘要
研究了深圳海域2008年4月、9月的水体弧菌数量、种类组成及其分布,探讨了弧菌总数及各优势类群的数量分布与环境因子间的相关关系。结果表明:弧菌总数分布具有季节性,东部海域春季(4月)的弧菌数量高于秋季(9月)的,其均值分别为1.50×104,8.89×102CFU/cm3;在西部海域秋季的略高于春季的,其均值分别为5.09×102,2.66×102CFU/cm3;弧菌数量最高值出现在大亚湾(4.40×104CFU/cm3)。弧菌的优势类群具有季节性分布特征:春季特有的优势类群有Vibrio gigantis类似种和V.splendidus类似种,秋季特有的优势类群有V.natriegens类似种;V.alginolyticus类似种是两个季节共有的优势类群,其数量春季高于秋季的。弧菌种类、数量与海水温度、盐度及细菌总数、Chl-a等环境因子有一定的相关性,其中盐度为弧菌种类及数量分布的主要影响因子。
The diversity and distribution of vibrios in Shenzhen coastal waters were studied,and the relationships between environmental factors and vibrio quantity were investigated.Results showed that the seasonal variations of culturable vibrios in Shenzhen coastal sea seemed to be obvious.In the east costal sea,the number of marine vibrios in April（with an average value of 1.50×104 CFU/cm3） was higher than that in September（with an average value of 8.89×102 CFU/cm3）,while in the west costal sea,the number of marine vibrios in September（with an average value of 5.09×102 CFU/cm3） was higher than that in April（with an average value of 2.66×102 CFU/cm3）.The highest number was detected in the Daya Bay.The seasonal variations of each dominant Vibrio sp.in the coastal waters indicate that V.gigantis-like species and V.splendidus-like species were dominant in April with lower temperature,while V.natriegens-like species were dominant in September with higher temperature;V.alginolyticus-like species were the dominant group in both seasons,the average number of it in April are higher than that in September.The vibrios density showed certain relationship between temperature,salinity,pH,level of fecal coliforms,level of total bacteria and culturable bacteria,and the salinity controls the distribution of vibrios obviously.
出处
《海洋学报》
CAS
CSCD
北大核心
2010年第5期117-126,共10页
基金
国家自然科学基金资助项目(41006117)
海洋公益性行业科研专项经费项目(200805064)
国家“908”专项课题评价项目(908-02-04-01)
国家“908”、福建“908”专项课题调查项目(908-01-ST06
FJ908-01-01-HS)
国家海洋局第三海洋研究所引进人才基金项目(海三科2005003
2005007)
国家海洋局第三海洋研究所基本科研业务费专项资助项目(海三科2007021)
关键词
深圳海域
弧菌种类与数量分布
环境因子
Shenzhen coastal waters
diversity and distribution of vibrios
environmental factors
