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| 夜光藻高效培养方法建立及其有性繁殖发生机制的初步研究 |
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王君玥1,2, 徐名扬1,2, 张慧敏1,2, 张珍珍1,2, 申欣1,2, 顾海峰3, 姬南京1,2,4
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1.江苏海洋大学 江苏省海洋生物资源与环境重点实验室/江苏省海洋生物技术重点实验室, 江苏 连云港 222005;2.江苏海洋大学 江苏省海洋生物产业技术协同创新中心, 江苏 连云港 222005;3.自然资源部第三海洋研究所 海洋生物多样性实验室, 福建 厦门 361005;4.江苏省海洋资源开发研究院, 江苏 连云港 222005
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| 摘要: |
| 夜光藻（Noctiluca scintillans）是典型的赤潮生物，在世界多个海域形成过大面积赤潮，对海洋生态系统构成一定的威胁。夜光藻赤潮的发生不仅受外界环境因子的影响，其有性繁殖的方式在赤潮发生过程中也起着重要作用。本研究从连云港海域分离获得一株夜光藻，利用自行设计的饵料藻投喂装置，以天然海水为培养基，在温度20~25℃范围内实现了夜光藻的室内长期培养，并观察记录了夜光藻配子发生全过程。研究结果表明，夜光藻不同生长阶段培养体系中配子母细胞与营养细胞密度变化趋势基本一致，显示夜光藻的有性繁殖发生与种群丰度存在一定的相关性，但它们之间的因果关系还有待进一步探讨。本研究结果加深了对夜光藻有性繁殖的认识，有助于阐明其种群增长模式，并深入理解其赤潮暴发机制。 |
| 关键词: 赤潮 夜光藻 有性繁殖 配子母细胞 |
| DOI：10.11759/hykx20220429006 |
| 分类号:P735 |
| 基金项目:国家自然科学基金青年项目（42006135）；江苏省科协青年科技人才托举工程项目；江苏高校优势学科建设工程资助项目；2022年度福建省生态环境厅环保科技计划项目（2022R005） |
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| Establishment of a high-efficiency culture method for Noctiluca scintillans and a preliminary study of its sexual reproduction mechanism |
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WANG Jun-yue1,2, XU Ming-yang1,2, ZHANG Hui-min1,2, ZHANG Zhen-zhen1,2, SHEN Xin1,2, GU Hai-feng3, JI Nan-jing1,2,4
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1.Jiangsu Key Laboratory of Marine Bioresources and Environment/Jiangsu Key Laboratory of Marine Biotechnology School of Marine Science and Fisheries, Jiangsu Ocean University, Lianyungang 222005, China;2.Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, China;3.Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China;4.Jiangsu Marine Resources Development Research Institute, Lianyungang 222005, China
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| Abstract: |
| Noctiluca scintillans is a typical red tide organism and frequently forms severe red tides in coastal waters around the world, posing severe threats to marine ecosystems. Many studies have demonstrated that the occurrence of red tide due to N. scintillans is affected by external environmental factors, but its sexual reproduction also plays an important role. In this study, a strain of N. scintillans was isolated from the coastal waters of Lianyungang, Jiangsu Province, China, and a cultivation and feeding device was designed. An efficient laboratory cultivation method for N. scintillans was achieved across the temperature range of 20~25℃, and the entire gametogenesis process was observed. Furthermore, we found that the trends of N.scintillans gametogenic cell growth are consistent with those of trophonts at different growth stages. These results indicate that there is a correlation between the occurrence of sexual reproduction and the population abundance of N. scintillans; however, the causal relationship between them remains to be further explored. Generally, this study further improves our understanding of the sexual reproduction of N. scintillans, clarifies its population growth pattern, and provides insights into the mechanism of its role in red tide formation. |
| Key words: red tide Noctiluca scintillans sexual reproduction gametogenesis |