Isotopic evidence for the dietary difference between Rhizostomeae <i>Nemopilema nomurai </i>and Semaeostomeae <i>Cyanea nozakii</i>

doi:10.1016/j.marenvres.2024.106608

	Isotopic evidence for the dietary difference between Rhizostomeae Nemopilema nomurai and Semaeostomeae Cyanea nozakii
	Wang, Pengpeng 1,2,5; Zhang, Fang 1,2,3,5; Chi, Xupeng 1,2,5; Sun, Song1,2,3,4,5
	2024-07-01
发表期刊	MARINE ENVIRONMENTAL RESEARCH
ISSN	0141-1136
卷号	199 页码:10
通讯作者	Zhang, Fang(zhangfang@qdio.ac.cn) ; Sun, Song(sunsong@qdio.ac.cn)
摘要	Blooms of the Rhizostomeae Nemopilema nomurai and the Semaeostomeae Cyanea nozakii have become more prominent in the coastal waters of China since the end of the 20th century. However, the trophic ecology of these jellyfish species remain incompletely understood. In this study, the trophic characterizations of N. nomurai and C. nozakii populations were assessed using stable isotope analysis (SIA), with a focus on the important bloom area offshore of the Yangtze Estuary. Our results indicated obvious trophic differences between two scyphomedusae. The higher trophic position of the C. nozakii population in the coastal planktonic food web was reflected by its relatively large delta N-15 value compared to that of N. nomurai. The MixSIAR model indicated that small copepods (<1000 mu m) and seston were important food sources for N. nomurai, and showed a stable dietary, irrespective of N. nomurai size. Conversely, C. nozakii exhibited a more diverse diet composition, and gelatinous organisms also were an important part of the diet of C. nozakii. Moreover, a pronounced ontogenetic shift in the diet of C. nozakii was observed, consisting of an increase in the proportion of zooplanktonic prey (excluding seston) in the C. nozakii diet with diameter. This study provides isotopic evidence of the substantial difference in trophic ecology between N. nomurai and C. nozakii, which resulted from the variations in SI values and diet compositions. Inconsistent size-based variation patterns were observed in trophic ontogenetic shifts within the N. nomurai and C. nozakii groups, highlighting a need for further investigation. These results will give insights into the characteristics of trophic ecology and functional roles of Rhizostomeae and Semaeostomeae, and indicate the need for a more careful consideration of the representations of Rhizostomeae and Semaeostomeae in coastal ecosystems, so as not to underestimate the knowledge of taxon-specific ecological effects on energy flow.
关键词	Diet composition Trophic structure Jellyfish bloom Scyphomedusae Coastal planktonic food webs
DOI	10.1016/j.marenvres.2024.106608
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[42076166] ; National Natural Science Foundation of China[42130411] ; CASCSIRO Project Fund [CAS][GJHZ1888] ; National Natural Science Foundation of Shandong Province[ZR2021QD061] ; Mount Tai Scholar Climbing Plan to Sun Song ; Innovation Team of Fishery Resources and Ecology in the Yellow Sea and Bohai Sea[2020TD01]
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Toxicology
WOS类目	Environmental Sciences ; Marine & Freshwater Biology ; Toxicology
WOS记录号	WOS:001260099500001
出版者	ELSEVIER SCI LTD
WOS关键词	JELLYFISH AURELIA-AURITA ; IN-SITU OBSERVATIONS ; PREDATION IMPACT ; TROPHIC FRACTIONATION ; PREY SELECTIVITY ; CLEARANCE RATES ; STABLE-ISOTOPES ; ZOOPLANKTON ; DELTA-N-15 ; CAPILLATA
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/186414
专题	海洋生态与环境科学重点实验室胶州湾海洋生态系统国家野外研究站
通讯作者	Zhang, Fang; Sun, Song
作者单位	1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao 266237, Peoples R China 3.Univ Chinese Acad Sci, Coll Marine Sci, Qingdao 266520, Peoples R China 4.Chinese Acad Sci, Jiaozhou Bay Marine Ecosyst Res Stn, Qingdao 266071, Peoples R China 5.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China
第一作者单位	海洋生态与环境科学重点实验室
通讯作者单位	海洋生态与环境科学重点实验室
推荐引用方式 GB/T 7714	Wang, Pengpeng,Zhang, Fang,Chi, Xupeng,et al. Isotopic evidence for the dietary difference between Rhizostomeae Nemopilema nomurai and Semaeostomeae Cyanea nozakii[J]. MARINE ENVIRONMENTAL RESEARCH,2024,199:10.
APA	Wang, Pengpeng,Zhang, Fang,Chi, Xupeng,&Sun, Song.(2024).Isotopic evidence for the dietary difference between Rhizostomeae Nemopilema nomurai and Semaeostomeae Cyanea nozakii.MARINE ENVIRONMENTAL RESEARCH,199,10.
MLA	Wang, Pengpeng,et al."Isotopic evidence for the dietary difference between Rhizostomeae Nemopilema nomurai and Semaeostomeae Cyanea nozakii".MARINE ENVIRONMENTAL RESEARCH 199(2024):10.