| 摘要: |
| 研究了杂色鲍(Haliotis diversicolor Reeve)鲍苗脱落死亡周期中水质、硅藻和细菌变化情况。结果显示,鲍苗脱落前各水质指标无明显变化,脱落前硅藻数量大幅度增 加,以卵形藻(Cocconeis spp.)和舟形藻(Navicula spp.)为主要种类。同时发现一株可疑致病菌,初步鉴定为溶藻弧菌 (Vibrio alginolyticus)。实验表明水质等相关因子与鲍苗脱落无直接关系,而硅藻很可能是致病菌的“载体”,整个附着膜微环境与鲍苗存亡息息相关。 |
| 关键词: 杂色鲍(Haliotis diversicolor Reeve) 水质 底栖硅藻 细菌 |
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| 基金项目:广东省重大招标项目(2KB05301N);中国水产科学院青年项目基金项目(2003-青-8) |
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| Studies on the stripping off and death of larvaes of Haliotis diversicolor Reeve |
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| Abstract: |
| The water quality, growth of diatom and changes of bacterium during larvaes of Haliotis diversicolor stripping off and death were studied to find the cause. Results showed that the water quality hadn’t changed distinctly before the larvaes stripped off. By the time of larvaes of abalones stripping off, the amount of diatom increased significantly, and dominant species were Navicula spp.and Cocconei spp. Meanwhile, we found a vibrion which might be the pathogenic bacteria which had caused stripping off and death of larvaes, and was identified as Vibrio alginolyticus. It was showed that water quality had no directly relationship with the abalones stripping off of H.diversicolor, but it could impact diatom phase. We found that diatom was likely to be the carrier of pathogenic bacteria, and the microenvironment of plates was very important. |
| Key words: Haliotis diversicolor Reeve water quality diatom bacterium |
