Experimental clearance rate and intraguild predation of jellyfish <i>Cyanea nozakii</i>

doi:10.1007/s00343-023-2321-4

	Experimental clearance rate and intraguild predation of jellyfish Cyanea nozakii
	Wang, Pengpeng 1,2,3,5; Zhang, Fang 1,2,3,5; Sun, Song1,2,3,4,5 ; Lue, Shuguo 6
	2023-08-26
发表期刊	JOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN	2096-5508
页码	13
通讯作者	Zhang, Fang(zhangfang@qdio.ac.cn) ; Sun, Song(sunsong@qdio.ac.cn)
摘要	Cyanea nozakii, a common jellyfish distributed in offshore China, has a complex trophic relationship with other zooplankton groups. However, few studies have reported the predation rates and prey selection patterns of C. nozakii medusae on different prey items. Research is also lacking on the intraguild predation of Aurelia coerulea (another common bloom jellyfish in offshore China) by C. nozakii. To address the knowledge gaps, the clearance rates of C. nozakii for different prey items, including copepods (small<1 000 mu m and large>1 000 mu m), fish larvae, and gelatinous prey (hydromedusae, A. coerulea ephyrae, and chaetognaths), were measured. The influence of predator size on the clearance rate was also determined. Additionally, we examined the intraguild predation of C. nozakii on A. coerulea medusae. The clearance rates of C. nozakii varied widely with prey organisms, being independent of prey concentrations. Gelatinous organisms, except for chaetognaths, were captured with considerably high efficiency, followed by fish larvae and copepods, indicating the preferential prey selection of gelatinous organisms by C. nozakii. The clearance rate increased linearly with the cross-sectional area of C. nozakii. Body size in medusae may, to some extents, underpin their capacity to capture more prey by increasing the encounter rate and capture success through ontogeny. C. nozakii preyed voraciously on A. coerulea in high feeding efficiency, but the clearance rate decreased with increasing A. coerulea (as prey) size. This phenomenon of intraguild predation suggests a speculative hypothesis of potential population regulation of A. coerulea by C. nozakii. The information regarding the feeding ecology of C. nozakii reported in this study is important for understanding plankton dynamics in marine ecosystems with extensive occurrences of this jellyfish.
关键词	Scyphomedusae predation rate gelatinous organisms prey selection feeding mechanism
DOI	10.1007/s00343-023-2321-4
收录类别	SCI
语种	英语
资助项目	We thank the captain and crew of the R/V Haiou. We are grateful to the anonymous reviewers and the editor for their valuable comments.
WOS研究方向	Marine & Freshwater Biology ; Oceanography
WOS类目	Limnology ; Oceanography
WOS记录号	WOS:001070923300002
出版者	SCIENCE PRESS
WOS关键词	SCYPHOMEDUSAN CHRYSAORA-QUINQUECIRRHA ; AURELIA-AURITA ; POPULATION-DYNAMICS ; PELAGIC CNIDARIANS ; FORAGING BEHAVIOR ; ESCAPE RESPONSES ; PREY SELECTION ; FEEDING RATES ; CAPILLATA L. ; YELLOW SEA
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/181671
专题	海洋生态与环境科学重点实验室
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.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Ecol & Environm Sci, Qingdao 266237, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, 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 6.Hainan Acad Environm Sci, Inst Marine Ecol & Environm, Haikou 570100, 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,Sun, Song,et al. Experimental clearance rate and intraguild predation of jellyfish Cyanea nozakii[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2023:13.
APA	Wang, Pengpeng,Zhang, Fang,Sun, Song,&Lue, Shuguo.(2023).Experimental clearance rate and intraguild predation of jellyfish Cyanea nozakii.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,13.
MLA	Wang, Pengpeng,et al."Experimental clearance rate and intraguild predation of jellyfish Cyanea nozakii".JOURNAL OF OCEANOLOGY AND LIMNOLOGY (2023):13.