| 火腿伪镖水蚤对抑食金球藻中国株的摄食行为及摄食后的表现 |
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| 引用本文： | 何学佳,韩棣棣,韩留玉,吕颂辉.火腿伪镖水蚤对抑食金球藻中国株的摄食行为及摄食后的表现[J].海洋学报(英文版),2018,37(4):69-76. |
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| 作者姓名： | 何学佳 韩棣棣 韩留玉 吕颂辉 |
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| 作者单位： | 暨南大学, 赤潮与海洋生物学研究中心, 广东 广州 510632;广东省水体富营养化与赤潮防治广东普通高校重点实验室, 广东 广州 510632,暨南大学, 赤潮与海洋生物学研究中心, 广东 广州 510632;广东省水体富营养化与赤潮防治广东普通高校重点实验室, 广东 广州 510632,暨南大学, 赤潮与海洋生物学研究中心, 广东 广州 510632;广东省水体富营养化与赤潮防治广东普通高校重点实验室, 广东 广州 510632;国家海洋局南海规划与环境研究院新港西路353, 广州 510300,暨南大学, 赤潮与海洋生物学研究中心, 广东 广州 510632;广东省水体富营养化与赤潮防治广东普通高校重点实验室, 广东 广州 510632 |
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| 基金项目： | The National Natural Science Foundation of China under contract No. 41276153; the Joint Project of National Nature Science Foundation of China-Guangdong under contract No. U1301235; the Public Science and Technology Research Funds Projects of Ocean under contract Nos 201305003-2 and 201305010-4; the Fundamental Research Funds for the Central Universities. |
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| 摘 要： | 全球河口海域屡屡爆发褐潮，但我们对致因种抑食金球藻和浮游桡足类之间的营养关系还不甚清楚。我们就浮游桡足类火腿伪镖水蚤摄食抑食金球藻中国株的单种或混合饵料时的摄食行为和生长、发育等表现进行了研究。研究发现：火腿伪镖水蚤的无节幼体、桡足幼体和成体摄食单种抑食金球藻饵料时，摄食率和食物浓度之间的关系符合米氏方程。较之桡足类幼体和成体，无节幼体摄食抑食金球藻时的Imax（最大摄食率）值最大，同时大于其摄食中肋骨条藻的Imax值。通常情况下，火腿伪镖水蚤在摄食抑食金球藻和中肋骨条藻的混合饵料时避食抑食金球藻，但于无节幼体，这种情况并不明显。无节幼体摄食单种抑食金球藻饵料在无节幼体期末期死亡，无法进入桡足类幼体期，与饥饿状态下的个体相似。但是，饵料中抑食金球藻的存在对桡足幼体的生长无明显效应，但却极大地减少了成体的生殖率。我们的研究表明火腿伪镖水蚤无节幼体，在褐潮的控制中有潜在作用，然而，这种潜在控制作用由于桡足类种群的衰落难以持续。
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| 关 键 词： | 抑食金球藻 桡足类 摄食 生长 发育 生殖 |
| 收稿时间： | 2016/11/24 0:00:00 |
Grazing and performance of the copepod Pseudodiaptomus poplesia on a Chinese strain of Aureococcus anophagefferens |
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| HE Xueji,HAN Didi,HAN Liuyu and LU Songhui.Grazing and performance of the copepod Pseudodiaptomus poplesia on a Chinese strain of Aureococcus anophagefferens[J].Acta Oceanologica Sinica,2018,37(4):69-76. |
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| Authors: | HE Xueji HAN Didi HAN Liuyu and LU Songhui |
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| Institution: | Research Center of Harmful Algae and Marine Biology, Jinan University, Guangzhou 510632, China;Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Jinan University, Guangzhou 510632, China,Research Center of Harmful Algae and Marine Biology, Jinan University, Guangzhou 510632, China;Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Jinan University, Guangzhou 510632, China,Research Center of Harmful Algae and Marine Biology, Jinan University, Guangzhou 510632, China;Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Jinan University, Guangzhou 510632, China;South China Sea Institute of Planning and Environmental Research, State Oceanic Administration, Guangzhou 510300, China and Research Center of Harmful Algae and Marine Biology, Jinan University, Guangzhou 510632, China;Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Jinan University, Guangzhou 510632, China |
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| Abstract: | Brown tides have recurred in estuary areas globally, but trophic interactions between the causative species Aureococcus anophagefferens and planktonic copepods remain poorly understood. In this study, we investigated performance (ingestion, growth, development and reproduction) of the planktonic copepod, Pseudodiaptomus poplesia, offered either mono-algal or mixed-algal diets containing a Chinese strain of A. anophagefferens. A typical Michaelis-Menten pattern existed between ingestion rate and food level when copepod fed on the mono-algal diet of this species. Nauplii exhibited the highest maximum ingestion rate (Imax) than copepodids and adult females. In addition, Imax value was higher in nauplii feeding on A. anophagefferens than on Skeletonema costatum. When fed mixtures of A. anophagefferens and S. costatum, P. poplesia selected against A. anophagefferens cells, but less strongly at the naupliar stage. Nauplii did not undergo metamorphosis and died at late naupliar stages feeding on A. anophagefferens alone, similar to those under starvation. Furthermore, the presence of A. anophagefferens greatly reduced the reproduction rate of females in mixtures but did not influence the growth rate of copepodids. These results suggest that P. poplesia nauplii may exert grazing pressure on A. anophagefferens population during a brown tide, which, however, may not be persistent because of copepod population decline. |
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| Keywords: | A anophagefferens copepod grazing growth development reproduction |
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