Dietary preferences and potential ecological impact on the zooplankton community of Nemopilema nomurai based on stable isotope and fatty acid analyses
文献类型：CNKI期刊论文
| 作者 | Junjian WANG; Chaolun LI ; Guang YANG; Zhencheng TAO; Yanqing WANG; Haochen XIAN
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| 发表日期 | 2022-05-15 |
| 出处 | Journal of Oceanology and Limnology
 |
| 关键词 | Nemopilema nomurai fatty acid stable isotope dietary preferences |
| 英文摘要 | Information on the dietary composition and food preferences of the giant j elly fish Nemopilema nomurai is important for understanding the trophic drivers of jellyfish outbreaks and their ecological consequences.We used fatty acid(FA) and stable isotope(SI) biomarkers to analyze the diet of nomurai from the Yellow Sea in August 2016.N.nomurai was found at all sampling stations,with abundances ranging from 59 inds./km~2 to 1 651 inds./km~2.There were no significant differences between large(>80 cm in diameter) and small(20-30 cm in diameter) medusae,either in FA compositions or in SI values,which suggests that large and small jellyfish have the same food composition and similar trophic levels.Compared to other zooplanktons,the relatively high levels of C20:4 n-6 in total FAs(～12%) indicates that organic detritus contributes considerably to the food composition of the jelly fish.The mixed model Stable Isotope Analysis in R(SIAR) revealed that nomurai tended to prey on smaller organisms(<1 000 μm in diameter)which comprised about 70% of its diet.This means the N.nomurai blooms will put high feeding pressure on the small plankton.The similar SI values and FA composition indicates that krill may share the same food resources with N. nomurai, which suggests that the jellyfish blooms may affect krill populations as a result of food competition. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Supported by the National Key Research and Development Program of China (Nos.2017YFC1404401,2017YFC1404402) ; the National Natural Science Foundation of China (No.41706189) |
| 卷 | v.40期:03页:257-268 |
| 语种 | 英文; |
| 分类号 | Q958.8 |
| ISSN号 | 2096-5508 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/187437]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.KeyLaboratoryofMarineEcologyandEnvironmentalSciences,InstituteofOceanology,ChineseAcademyofSciences 2.NorthChinaSeaMarineForecastingCenterofStateOceanicAdministration 3.UniversityofChineseAcademyofSciences 4.LaboratoryforMarineEcologyandEnvironmentalScience,PilotNationalLaboratoryforMarineScienceandTechnology(Qingdao) 5.CenterforOceanMega-Science,ChineseAcademyofSciences 6.DepartmentofEngineeringandTechnologyInstituteofOceanology,ChineseAcademyofSciences |
| 推荐引用方式 GB/T 7714 | Junjian WANG,Chaolun LI,Guang YANG,et al. Dietary preferences and potential ecological impact on the zooplankton community of Nemopilema nomurai based on stable isotope and fatty acid analyses. 2022. |
入库方式： OAI收割
来源：海洋研究所
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