| 摘要: |
| 根据 2006 年 9 月—2007 年 8 月胶州湾浅水Ⅰ型浮游生物网的调查资料, 分析了胶州湾毛颚类的种类组成、数量分布、摄食、生物量、生产力情况。结果表明, 本次调查共出现毛颚类 3 种: 强壮箭虫(Sagitta crassa)、拿卡箭虫(Sagitta nagae)和百陶箭虫(Sagitta bedoti)。其中强壮箭虫全年出现, 在数量上占有绝对优势, 年平均密度达到 45.3 ind/m3; 拿卡箭虫和百陶箭虫在秋、冬、春季出现, 年平均密度分别为 0.17 ind/m3和 0.35 ind/m3。通过推算得到胶州湾毛颚类年平均生物量为 107.92 mg/m2, 年平均生产力为 1.47 mg C/ (m2·d), 占浮游动物总生产力的 11.6%。 毛颚类对浮游动物生物量和生产力的摄食压力在冬季达到全年最大值, 分别为 5.71%和 83.47%, 在春季、夏季、秋季毛颚类对浮游动物生物量的摄食压力分别为 0.67%、0.08%、6.48%, 对生产力的摄食压力分别为 27.00%、2.48%和 48.88%。由此可见, 在冬季毛颚类的摄食对浮游动物群落结构等可能会产生重要影响。
|
| 关键词: 箭虫, 密度, 生物量, 生产力, 摄食, 胶州湾 |
| DOI：10.11693/hyhz201004026026 |
| 分类号: |
| 基金项目:国家重点基础研究规划 973 项目, 2006CB400606 号; 国家自然科学基金重点项目, 40631008 号 |
|
| THE ECOLOGY OF CHAETOGNATHS IN JIAOZHOU BAY |
|
WANG Qian1,2, SUN Song3, HUO Yuan-Zi4, YANG Bo3
|
|
1.Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences;2.Graduate University, Chinese Academy of Sciences;3.Jiaozhou Bay Marine Ecosystem Research Station, Institute of Oceanology, Chinese Academy of Sciences;4.College of Fisheries and Life Science, Shanghai Ocean University
|
| Abstract: |
| The ecology of Chaetognaths was studied based on the monthly sampling data collected from September, 2006 to August, 2007 at 13 stations in the Jiaozhou Bay. Among the three species existing in the Jiaozhou Bay, Sagitta crassa was the dominant species, appearing all year around with its maximal abundance up to 45.3 ind/m3. The other two species were Sagitta nagae and Sagitta bedoti, appearing in autumn, winter and spring, and their abundance were 0.17 ind/m3 and 0.35 ind/m3, respectively. The average biomass of Chaetognaths in the Jiaozhou Bay was 107.92 mg/m2. The production was 1.47 mg C/ (m2·d), which accounted for 11.6% of the zooplankton production. The feeding pressures of Chaetognaths on zooplankton biomass and production reached 5.71% and 83.47% in winter. In spring, summer and autumn, the feeding pressure of Chaetognaths on zooplankton biomass were 0.67%, 0.08%, and 6.48%. The feeding pressures of Chaetognaths on zooplankton production were 27.00%、2.48% and 48.88%. The feeding of Chaetognaths had a significant impact on the community structure of zooplankton in winter.
|
| Key words: Chaetognaths, Abundance, biomass, Production, Feeding, Jiaozhou Bay |
