| 香港巨牡蛎对3种微藻的选择性摄食研究 |
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| 引用本文： | 蓝文陆,付家想,杨斌,李天深,范航清,李琼珍,黄凌风.香港巨牡蛎对3种微藻的选择性摄食研究[J].海洋学报,2018,40(8):79-88. |
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| 作者姓名： | 蓝文陆 付家想 杨斌 李天深 范航清 李琼珍 黄凌风 |
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| 作者单位： | 1.广西科学院 广西红树林研究中心 广西红树林保护与利用重点实验室, 广西 北海 536007;钦州学院 广西北部湾海洋灾害研究重点实验室, 广西 钦州 535099;广西壮族自治区海洋环境监测中心站, 广西 北海 536000 |
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| 基金项目： | 国家自然科学基金项目（41466001）；广西科技计划项目（桂科AA17129001，桂科AD17129041）；广西自然科学基金项目（2015GXNSFBA139194，2015GXNSFAA139244）；广西红树林保护与利用重点实验室开放基金项目（GKLMC-200504）。 |
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| 摘 要： | 从微藻粒径大小、饵料密度以及营养价值角度，选取牟氏角毛藻（Chaetoceros muelleri）、亚心形扁藻（Platymonas subcordiformis）、球等鞭金藻（Isochrysis galbana）分别作为硅藻、绿藻和金藻的代表，开展了不同规格的香港巨牡蛎对3种微藻在同等密度、同等生物量混合条件下的摄食选择性研究。结果显示，香港巨牡蛎在两种不同混合藻条件下对3种不同微藻摄食选择性有显著性差异（P<0.01）。3种藻相同密度混合条件下，大、中、小3种规格香港巨牡蛎更倾向摄食粒径较大的亚心形扁藻，且贝类规格越大选择倾向性越低，摄食选择效率分别为0.32、0.35、0.48，对球等鞭金藻无明显选择性。3种藻等生物量混合条件下，香港巨牡蛎对亚心形扁藻和球等鞭金藻的摄食有选择性，且规格大小对选择效率影响显著（P<0.01），个体越小选择性越强，小规格香港巨牡蛎倾向滤食亚心形扁藻（P<0.01），大、中规格更倾向摄食粒径较小的球等鞭金藻。两种混合条件下，香港巨牡蛎都对牟氏角毛藻都有负的选择效率，而且牟氏角毛藻密度越高负值绝对值越大。微藻的细胞大小、形状、营养价值以及香港巨牡蛎的个体大小都对摄食选择性有着明显的影响，香港巨牡蛎的摄食选择性在现场海区中还明显受到生境及食物条件的限制。
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| 关 键 词： | 香港巨牡蛎 微藻 选择性摄食 摄食选择效率 |
| 收稿时间： | 2018/1/5 0:00:00 |
| 修稿时间： | 2018/3/13 0:00:00 |
Study on feeding selectivity of Crassostrea hongkongensis feeding on there different phytoplankton |
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| Lan Wenlu,Fu Jiaxiang,Yang Bin,Li Tianshen,Fan Hangqing,Li Qiongzhen and Huang Lingfeng.Study on feeding selectivity of Crassostrea hongkongensis feeding on there different phytoplankton[J].Acta Oceanologica Sinica (in Chinese),2018,40(8):79-88. |
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| Authors: | Lan Wenlu Fu Jiaxiang Yang Bin Li Tianshen Fan Hangqing Li Qiongzhen and Huang Lingfeng |
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| Institution: | Guangxi Key Laboratory of Mangrove Protection, Guangxi Mangrove Research Center, Guangxi Academy of Sciences, Beihai 536007, China;Guangxi Key Laboratory of Beibu Gulf Marine Disasters Research, Qinzhou University, Qinzhou 535099, China;Marine Environmental Monitoring Center of Guangxi, Beihai 536000, China,Marine Environmental Monitoring Center of Guangxi, Beihai 536000, China,Guangxi Key Laboratory of Beibu Gulf Marine Disasters Research, Qinzhou University, Qinzhou 535099, China,Marine Environmental Monitoring Center of Guangxi, Beihai 536000, China,Guangxi Key Laboratory of Mangrove Protection, Guangxi Mangrove Research Center, Guangxi Academy of Sciences, Beihai 536007, China,Guangxi Academy of Fishery Science, Nanning 530004, China and College of the Environment and Ecological Science, Xiamen University, Xiamen 361102, China |
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| Abstract: | Chaetoceros muelleri, Platymonas subcordiformis and Isochrysis galbana were chosen as a representative of diatom, chlorophyta and chrysophyta for the food of Crassostrea hongkongensis, and the clearance rate, filtration rate and selection efficiency of different size Crassostrea hongkongensis feeding on these three algae were examined on the same density and biomass, to study the feeding selectivity of Crassostrea hongkongensis. The results showed that there were significant differences among the feeding selection efficiency of C. hongkongens is on the three algae in the condition of same density as well as same biomass. Selection efficiency of large-size, medium-size and small-size of the C. hongkongens on Platymonas subcordiformis were 0.32,0.35,0.48 under the circumstance of same density, respectively. C. hongkongensis had higher feeding selectivity on the large size algae than small size algae. C. hongkongensis showed feeding selectivity on Isochrysis galbana and Platymonas subcordiformis under the same biomass of algae. However, C. hongkongensis feeding on Chaetoceros muelleri showed negative selection efficiency both under the same density and biomass mixed conditions. The smaller size of the C. hongkongensis showed the higher feeding selectivity on the studied algae. And the size, shape and nutritive value of microalgae and the size of C. hongkongensis had obvious effects on the feeding selectivity of the C. hongkongensis. |
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| Keywords: | Crassostrea hongkongensis phytoplankton feeding selectivity selection efficiency |
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