| 摘要: |
| 论文以强额孔雀水蚤（Parvocalanus carssirostris）为研究对象，研究了不同培养温度（18℃、22℃、26℃、30℃）、不同种类微藻（球等鞭金藻（Isochrysis galbana）、牟氏角毛藻（Chaetoceros muelleri）、青岛大扁藻（Platymonas helgolandica））饵料以及不同饵料质量浓度（0.5、1.0、1.5、2.5、5 μgC/mL）对强额孔雀水蚤摄食的影响。结果表明：强额孔雀水蚤的清滤率随温度上升而上升，随饵料浓度上升而下降，26℃～30℃以及饵料浓度为0.5μgC/mL时清滤率较高；滤食率和摄食率随温度上升而上升，摄食球等鞭金藻和牟氏角毛藻时，在26℃时达到最高；摄食青岛大扁藻时，两者随温度升高持续上升。对3种藻的摄食率大小顺序为：青岛大扁藻>；球等鞭金藻>；牟氏角毛藻；强额孔雀水蚤摄食碳量占体碳比较高，远高于中华哲水蚤（Calanus sinicus）、海洋伪镖水蚤（Pseudodiaptomus annandalei）等大中型桡足类；强额孔雀水蚤的最适饵料等效球直径约为11.5 μm，青岛大扁藻为强额孔雀水蚤较适口的饵料。 |
| 关键词: 强额孔雀水蚤(Parvocalanus carssirostris) 清滤率 滤食率 摄食率 饵料等效球直径 |
| DOI：10.11759/hykx20191015003 |
| 分类号:S917 |
| 基金项目:福建省自然科学基金项目（2018J01453）；“十三五”厦门市海洋经济创新发展示范项目（16PZY002SF18） |
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| Effects of temperature and diet on the ingestion of calanoid copepods: Parvocalanus crassirostris |
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CHENG Hao-nan1, CHENG Fang-ping2,3, WANG Shu-hong1
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1.Fisheries college of Jimei University, Ornamental Aquarium Engineering Research Centre in Universities of Fujian Province, Xiamen 361021, China;2.Shanghai Ocean University, College of Marine Ecology and Environment, Shanghai 201306, China;3.Shanghai Ocean University, Centre for Research on the Ecological Security of Ports and Shipping, Shanghai 201306, China
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| Abstract: |
| In order to optimize the culture conditions, the effects of different temperatures (18℃, 22℃, 26℃, and 30℃), different food types (Isochrysisgalbana, Chaetoceros muelleri, and Platymonas helgolandica), as well as different food concentrations (0.5, 1.0, 1.5, 2.5, and 5.0 μgC/mL) on the ingestion of Parvocalanus crassirostris were investigated. The results showed that: (1) The clearance rates increased with temperature increase, but decreased when food concentration increase. The clearance rates had the highest values at 26℃~30℃ when the food concentration was 0.5 μgC/mL; (2) The grazing and ingestion rates increased with temperature increase while feeding on I. galbana and C. muelleri and reached the highest level at 26℃. Additionally, both the grazing and ingestion rates increased while feeding on P. helgolandica when the temperature elevated from 18℃ to 30℃. The order of the ingestion rate for three algae species were as flowing: P. helgolandica>I. galbana>C. muelleri; (3) The weight- specific ingestion rates of P. crassirostris for body carbon content per day is higher than that of the large copepods such as Calanus sinicus and Pseudodiaptomus marinus; (4) The optimum food equivalent sphere diameter of P. crassirostris is about 11.5 μm, and P. helgolandica is a suitable feed when the cell size was considered. |
| Key words: Parvocalanus crassirostris clearance rate grazing rate ingestion rate optimum food equivalent sphere diameter |
