| 摘要: |
| 水母暴发是一个全球广泛关注的生态问题, 水螅体阶段的环境影响是研究水母暴发的重要切入点。本实验从温度(10, 15, 20, 25℃)和投饵频次(无投喂, 每周投喂, 每天投喂)两个角度进行研究。结果表明, 温度对横裂过程、碟状体产生过程影响显著, 饵料对水螅体数量影响显著。水螅体从20℃降温至10℃和15℃可发生横裂产生碟状体, 适宜横裂的温度范围内, 相对高温和充足饵料有利于释放更多碟状体; 适宜横裂的温度范围外, 相对高温和充足饵料有利于水螅体数量的增加。适宜横裂的温度范围持续时间达到水螅体的响应时间阈值, 才能够完成从底栖阶段的水螅体到浮游阶段水母体的转化。 |
| 关键词: 海月水母, 温度, 饵料, 横裂, 暴发 |
| DOI：10.11693/hyhz201205004004 |
| 分类号: |
| 基金项目:国家重点基础研究发展计划(973)项目, 2011CB403601号; 中国科学院知识创新工程重要方向项目群, KZCX2-YW-Q07号; 国家海洋公益性行业科研专项经费项目, 201005018 号 |
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| EFFECTS OF TEMPERATURE AND FOOD ON ASEXUAL REPRODUCTION OF THE SCYPHOZOAN, AURELIA sp.1 |
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WANG Yan-Tao1,2, SUN Song1,3, LI Chao-Lun1, ZHANG Fang1
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1.Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences;2.Graduate University, Chinese Academy of Sciences;3.Jiaozhou Bay Marine Ecosystem Research Station, Institute of Oceanology, Chinese Academy of Sciences
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| Abstract: |
| Temperature and food play a vital role in determining asexual direction of jelly fish in its polyp stage. The combinations of four temperature grades (10, 15, 20 and 25℃) and three food levels (no food, feed once a week and feed everyday) were set up to exam Aurelia sp.1 life cycle strategy. Temperature could determine the strobilation and ephyrae release. Food determined the number of polyps. Temperature changing from 20℃to 15℃and 10℃induced ephyrae release. In suitable temperature range for strobilation, relatively higher temperature and sufficient food enabled polyps to produce more ephyrae. At temperatures beyond range for strobilation, sufficient food condition enabled polyp produce polyps. Higher temperature and lower food level induced higher polyp mortality. |
| Key words: Aurelia sp.1, Temperature, Food, Strobilation, Bloom |
