报告详情
The sources and fate of omega-3 PUFA in eutrophic lakes
编号：1697
访问权限：仅限参会人
更新：2024-04-11 17:38:32 浏览：840次
口头报告
报告开始：2024年05月19日 14:40（Asia/Shanghai）
报告时间：10min
所在会场：[S4] 主题4、生态与可持续发展 [S4-9] 主题4、生态与可持续发展 专题4.4、专题4.2（19日下午，215）
暂无文件
摘要
- Omega-3 polyunsaturated fatty acids (ω3-PUFA) are central to growth and reproduction of aquatic consumers. Dissolved nutrients in aquatic ecosystems strongly affect the algal taxonomic composition and thus the production and transfer of specific ω3-PUFA to consumers at higher trophic levels. However, most studies have been conducted in nutrient-poor, oligotrophic lakes, leading to insufficiently comprehensive understanding of how water nutrients affect algal ω3-PUFA and their trophic transfer and subsequent retention in consumers of eutrophic lakes.
- We conducted a field study in a eutrophic lake and collected basal food sources (phytoplankton, periphyton and macrophytes) and aquatic consumers (invertebrates, zooplankton and fish), and measured their fatty acid (FA) composition.
- Our results showed that periphyton and phytoplankton were both important sources of ω3-PUFA for eutrophic lake food webs. High water nutrient levels coincided with low ω3-PUFA levels in phytoplankton and periphyton, resulting in decreased nutritional quality. Consequently, ω3-PUFA of invertebrates and zooplankton reflected variations in ω3-PUFA of phytoplankton and periphyton, respectively.
- The ω3-PUFA levels of fish decreased as phytoplankton and periphyton ω3-PUFA decreased. Among fishes, the Redfin Culter (Cultrichthys erythropterus) and Bar Cheek Goby (Rhinogobius giurinus) exhibited significantly higher levels of EPA and DHA compared to the Pond Loach (Misgurnus anguillicaudatus), which may have been caused by their different feeding modes.
- Decreases in the ω3-PUFA levels of basal food sources may be one of the causes leading to the reduction of trophic links in aquatic food webs.
- Our study elucidated the sources and fate of ω3-PUFAs in eutrophic lakes, complementing previous studies in oligo- and mesotrophic lakes, and emphasizes the role of high-quality food sources, offering new perspectives for the conservation and management of eutrophic lake ecosystems.
关键词
Food quality; Fish; Diatoms; Food webs; Fatty acids.
报告人
罗一多
硕士研究生 广东工业大学稿件作者
全部评论
重要日期
-
会议日期
05月17日
2024
至05月20日
2024
-
03月31日 2024
初稿截稿日期
-
03月31日 2024
报告提交截止日期
-
05月20日 2024
注册截止日期
主办单位
青年地学论坛理事会
承办单位
厦门大学近海海洋环境科学国家重点实验室
中国科学院城市环境研究所
自然资源部第三海洋研究所
中国科学院城市环境研究所
自然资源部第三海洋研究所
联系方式
- 辜克兢（会务总协调、会场安排、学术安排）
- gu******@xmu.edu.cn
- 139********
- 柳欣（会务总协调）
- li******@xmu.edu.cn
- 138********
- 孙佳妮（会务总协调）
- sc******@chytey.com
- 152********
- 窦恒（会场安排、学术安排）
- do******@chytey.com
- 186********
- 李招英（会场技术服务）
- li******@xmu.edu.cn
- 138********
- 刘琳（学术安排）
- ll******@iue.ac.cn
- 133********
- 李虎（学术安排）
- hl******@iue.ac.cn
- 189********
- 柳欣（学术安排）
- li******@xmu.edu.cn
- 138********
- 胡勤梅（会议注册）
- ma******@chytey.com
- 135********
- 孙晓笛（会议注册）
- xi******@xmu.edu.cn
- 188********
- 许心雅（会议财务）
- xu******@xmu.edu.cn
- 180********
- 朱佳（商业赞助）
- zh******@xmu.edu.cn
- 139********
- 张君（海报张贴）
- ju******@xmu.edu.cn
- 138********
- 卢巍（海报张贴）
- lu******@chytey.com
- 189********
- 李璟（酒店预订及咨询）
- li******@chytey.com
- 186********
发表评论