| 摘要: |
| 于2015年夏季、秋季和2016年春季在天津大神堂海域人工鱼礁区进行砂壳纤毛虫群落的调查。三个季节共鉴定出砂壳纤毛虫10属31种，拟铃虫属种类最多，夏季砂壳纤毛虫种类最多。砂壳纤毛虫丰度、生物量和群落多样性指数存在明显的季节差异。砂壳纤毛虫丰度夏季最高（379±355 个/L），秋季最低（173±190 个/L）；生物量夏季最高（2.74±2.82 μg C/L），秋季最低（0.23±0.21 μg C/L）。砂壳纤毛虫壳的平均口径夏季最大（49.64±6.90 μm），秋季最小（26.76±4.55 μm）。砂壳纤毛虫群落Shannon多样性指数夏季最高（2.025±0.574），春季最低（0.922±0.437）；Pielou均匀度指数秋季最高（0.682±0.276），春季最低（0.448±0.266）。春季鱼礁区和对照区砂壳纤毛虫优势种存在差异，夏季和秋季鱼礁区和对照区砂壳纤毛虫优势种相同；三个季节鱼礁区第I优势种的优势度均明显高于对照区。三个季节鱼礁区砂壳纤毛虫丰度和生物量均高于对照区，这可能是由于投礁后砂壳纤毛虫的适口饵料——nano-浮游植物丰度增加导致；三个季节鱼礁区Shannon多样性指数和Pielou均匀度指数均低于对照区，可能是因为本次调查是在投礁1—2年后开展的，时间较短，鱼礁区砂壳纤毛虫群落尚不稳定，鱼礁区独特生态系统的变化尚需更长的时间来进行跟踪监测。 |
| 关键词: 砂壳纤毛虫 群落结构 季节变化 人工鱼礁 大神堂海域 |
| DOI： |
| 分类号:Q958.8 |
| 基金项目:国家自然科学基金项目(41806205)；天津市农业发展服务中心青年科技创新项目(ZXKJ201915) |
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| Seasonal variation of tintinnid community in the artificial fish reef area of Dashentang waters in Tianjin |
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YU Ying1, XU Xiao-fu2, WANG Shuo2, ZHANG Bo-lun2, ZHANG Wu-chang3
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1.Taishan University;2.Tianjin Fisheries Research Institute;3.Institute of Oceanology, Chinese Academy of Sciences
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| Abstract: |
| We investigated the abundance and biomass of tintinnid community in the artificial fish reef area of Dashentang waters in Tianjin during summer (July, 2015), autumn (October, 2015) and spring (May, 2016). Thirty one species belonging to 10 genera were identified, 15 of which were in genus Tintinnopsis. Species number was highest in summer. There were significant differences in abundance, biomass and community diversity index among three seasons. Tintinnid abundance was maximum in summer (379±355 ind/L), and minimum in autumn (173±190 ind/L); tintinnid biomass was maximum in summer (2.74±2.82 μg C/L), and minimum in autumn (0.23±0.21 μg C/L). Lorica oral diameter of tintinnid community was maximum in summer (49.64±6.90 μm), and minimum in autumn (26.76±4.55 μm). Shannon index of tintinnid community was maximum in summer (2.025±0.574) and minimum in spring (0.922±0.437); Pielou index of tintinnid community was maximum in autumn (0.682±0.276) and minimum in spring (0.448±0.266). Dominant tintinnids were different between artificial fish reef area and adjacent area in spring, while dominant species were the same between artificial fish reef area and adjacent area in summer and autumn. The dominance index of the first dominant tintinnids in artificial fish reef area was significantly higher than that in adjacent area in three seasons. Abundance and biomass of tintinnids were apparently higher in artificial fish reef area than that in adjacent area in three seasons, which was possibly due to the increase of nano-phytoplankton abundance after artificial fish reef construction. Both Shannon index and Pielou index of tintinnid community were lower in artificial fish reef area than that in adjacent area in three seasons. It could be a result of instability of tintinnid community 1-2 years after artificial fish reef construction. Long-term monitoring of tintinnid community needed to be carried out in artificial fish reef area, in order to understand the impact of artificial fish reef construction on the planktonic ecosystem. |
| Key words: tintinnid community structure seasonal variation artificial fish reef area Dashentang waters |