| 摘要: |
| 于1996年8–12月，分别从青岛海洋大学太平角实验基地和胶南市水产养殖研究所采集海湾扇贝和太平洋牡蛎，采用室内实验的方法，比较研究了不同规格的两种贝类对4种不同大小藻类的选择性及水温对其滤除率的影响。结果表明，海湾扇贝和太平洋牡蛎的小口的摄食率随藻类规格的增大而增加；而大贝则表现出明显的差异，海湾扇贝对中等规格（Φ=5.55–5.79μm）的藻类、太平洋牡蛎对小规格（Φ=4.35μm）的藻类具有较高的选择性，表明相同条件下两种贝类对海洋浮游植物群落结构产生不同的影响。在水温对滤除率的影响实验中，当水温从20°C升至26°C时，小贝和成贝的滤除率均随水温的升高而增加；当水温从26°C升至29°C时，海湾扇贝的滤除率略有增加，而太平洋牡蛎的滤除率则下降。 |
| 关键词: 海湾扇贝 太平洋牡蛎 藻类 食物选择性 水温 滤除率 |
| DOI：10.11693/hyhz200002005005 |
| 分类号: |
| 基金项目:国家杰出青年科学基金资助项目，39725023号;国家自然科学基金资助项目，39570567、39430150号 |
附件 |
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| EXPERIMENTAL STUDIES ON FEEDING SELECTIVITY AND THE FILTER-FEEDING RATE OF ARGOPECTEN IRRADIANS AND CRASSOSTREA GIGAS |
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WANG Fang, DONG Shuang-lin, ZHANG Shuo, WANG Ru-cai
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Fishery College, Ocean University of Qingdao, Qingdao, 266003
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| Abstract: |
| For research of bivalve’s effect on marine plankton community structure, we conducted Aug.–Dec. 1996 experiment to study the two bivalves’ feeding selectivity and their filter-feeding rates. For observing the feeding selectivity, Chlorella sp., Chaetoceros muelleri, Lermmerman, Nitzschia closterium (Ehrenb) and Pyramidomonas sp. were used; for filter-feeding experiment, the alga used was Nitzschia closterium (Ehrenb), and the experimental temperatures were 20, 23, 26, 29°C. Results show that the feeding selectivity of small-sized bay scallop and the oyster increase with algae size: when the algae increased from 4.35μm to 11.6μm, the feeding rate of bay scallop increased from 4.21% to 11.0% and that of the Pacific oyster from 0.81% to 3.15%. But large-sized bay scallop had the highest feeding rate when the algae was middle sized (Φ=4.35μm). So the two bivalves have different effects on marine phytoplankton community structure. |
| Key words: Argopecten irradians, Crassostrea gigas, Algae, Feeding selectivity, Water temperature, Filter-feeding rate |
