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Copepod feeding strategies in the epipelagic to bathypelagic zone of Prydz Bay, Antarctica: an assessment through fatty acids and stable isotopes
Yang, Guang1; Li, Chaolun1,2; Wang, Yanqing; Peng, Quancai2,3
2018-07-01
Source PublicationPOLAR BIOLOGY
ISSN0722-4060
Volume41Issue:7Pages:1307-1317
SubtypeArticle
AbstractInformation on the feeding strategies and dietary preferences of copepods from epipelagic to bathypelagic zones of the Southern Ocean are important for understanding the role of zooplankton in carbon and energy transfers through the food web. Using fatty acids (FA) and stable isotopic biomarkers, the present study investigated the feeding strategies and trophic niches of seven dominant copepod species (Calanoides acutus, Calanus propinquus, Metridia gerlachei, Rhincalanus gigas, Paraeuchaeta antarctica, Aetideopsis minor and Bathycalanus richardi) collected from various water strata of Prydz Bay, Antarctica during the austral summer of 2013. Copepods showed species-specific and depth-related differences in FA biomarkers and stable isotopic values. C. acutus and C. propinquus had the largest content of long-chain monounsaturated FA, while M. gerlachei had the smallest FA content (approximately 40 mg g(-1) dry weight) and the highest 18:1n-9. FA of R. gigas were dominated by short- and medium-length carbon chains. The species P. antarctica and meso- and bathypelagic species A. minor and B. richardi showed relatively higher levels of carnivorous FA ratios and delta N-15 values. Higher delta N-15 values in M. gerlachei and P. antarctica dwelled in the mesopelagic and bathypelagic zone indicated the high diversity of feeding strategies of these copepods responding to the changing food availability. The flexible feeding strategies of copepods could enable them to utilise different ecological niches and minimise inter- and intra-specific competition in the Prydz Bay.
KeywordCopepods Prydz Bay Southern Ocean Trophic biomarker Dietary composition Fatty acids Stable isotopes
Subject AreaBiodiversity & Conservation ; Environmental Sciences & Ecology
DOI10.1007/s00300-018-2286-5
Indexed BySCIE
Language英语
WOS Research AreaBiodiversity Conservation ; Ecology
WOS IDWOS:000437102400001
PublisherSPRINGER
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Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/157560
Collection海洋生态与环境科学重点实验室
Affiliation1.Chinese Acad Sci, Key Lab Marine Ecol & Environm Sci, Inst Oceanol, 7 Nanhai Rd, Qingdao 266071, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
3.Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Res Ctr Anal & Measurement, Inst Oceanol, 7 Nanhai Rd, Qingdao 266071, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Yang, Guang,Li, Chaolun,Wang, Yanqing,et al. Copepod feeding strategies in the epipelagic to bathypelagic zone of Prydz Bay, Antarctica: an assessment through fatty acids and stable isotopes[J]. POLAR BIOLOGY,2018,41(7):1307-1317.
APA Yang, Guang,Li, Chaolun,Wang, Yanqing,&Peng, Quancai.(2018).Copepod feeding strategies in the epipelagic to bathypelagic zone of Prydz Bay, Antarctica: an assessment through fatty acids and stable isotopes.POLAR BIOLOGY,41(7),1307-1317.
MLA Yang, Guang,et al."Copepod feeding strategies in the epipelagic to bathypelagic zone of Prydz Bay, Antarctica: an assessment through fatty acids and stable isotopes".POLAR BIOLOGY 41.7(2018):1307-1317.
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