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Hyposalinity and incremental micro-zooplankton supply in early-developed Nemopilema nomurai polyp survival, growth, and podocyst reproduction
Feng, Song1; Lin, Jianing2,3; Sun, Song1,4,5; Zhang, Fang1; Li, Chaolun1
2018-03-19
Source PublicationMARINE ECOLOGY PROGRESS SERIES
ISSN0171-8630
Volume591Pages:117-128
SubtypeArticle
AbstractEarly-developed polyps of the giant jellyfish Nemopilema nomurai that are sexually produced during the rainy season form the principal recruitment for benthic population stages, regulating the mass outbreaks of medusae that occur in east Asian marginal seas. Their survival, development and subsequent asexual reproduction are likely facilitated by hyposaline seawater and potentially enhanced micro-zooplankton around the estuaries that comprise the major nurseries of medusae. In this study, 8-tentacled polyps that developed from planulae were incubated at 11 salinities from low to high (8, 11, 13, 15, 18, 20, 23, 25, 28, 31, 33) with 3 feeding frequencies (once every 3 d, once every 9 d, unfed; Brachionus plicatilis concentration: 0.16 mg C l(-1)) at a constant temperature (19 degrees C). Survival rate of early-developed polyps increased 3-fold at salinities 11 to 20, > 80% greater than at salinities 25 to 33. The composition of fully developed polyps, somatic growth, and podocyst diameter positively depended on food supply, except at salinity 8. The potential podocyst production of polyp colonization reached normal peak at salinity 20 in the group that was fed once every 3 d. Excystments were significantly restricted at salinity < 20. These findings confirm that estuarine areas with salinities from 11 to 20 are appropriate for N. nomurai polyp colonization, where prospectively increasing micro-zooplankton supply rooted in frequent eutrophication may benefit polyps. An asexual reproduction strategy also corresponded with autumn salinity fluctuations. The intensity of diluted water and monsoonal rainfall, as well as plankton supply around the estuaries in autumn may fundamentally affect polyp abundance and size, determining the population size of medusae in the following spring.
KeywordPolyps Low salinity Survival Growth Podocyst reproduction
Subject AreaEnvironmental Sciences & Ecology ; Marine & Freshwater Biology ; Oceanography
DOI10.3354/meps12204
Indexed BySCIE
Language英语
WOS Research AreaEcology ; Marine & Freshwater Biology ; Oceanography
WOS IDWOS:000428818100010
PublisherINTER-RESEARCH
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/157589
Collection海洋生态与环境科学重点实验室
Affiliation1.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 266071, Peoples R China
3.Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing 100012, Peoples R China
4.Chinese Res Inst Environm Sci, Lab Riverine Ecol Conservat & Technol, Beijing 100012, Peoples R China
5.Chinese Acad Sci, Inst Oceanol, Jiaozhou Bay Marine Ecosyst Res Stn, Qingdao 266071, Peoples R China
6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
First Author AffilicationKey Laboratory of Marine Ecology & Environmental Sciences, CAS
Recommended Citation
GB/T 7714
Feng, Song,Lin, Jianing,Sun, Song,et al. Hyposalinity and incremental micro-zooplankton supply in early-developed Nemopilema nomurai polyp survival, growth, and podocyst reproduction[J]. MARINE ECOLOGY PROGRESS SERIES,2018,591:117-128.
APA Feng, Song,Lin, Jianing,Sun, Song,Zhang, Fang,&Li, Chaolun.(2018).Hyposalinity and incremental micro-zooplankton supply in early-developed Nemopilema nomurai polyp survival, growth, and podocyst reproduction.MARINE ECOLOGY PROGRESS SERIES,591,117-128.
MLA Feng, Song,et al."Hyposalinity and incremental micro-zooplankton supply in early-developed Nemopilema nomurai polyp survival, growth, and podocyst reproduction".MARINE ECOLOGY PROGRESS SERIES 591(2018):117-128.
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