Lipids and fatty acids in Calanus sinicus during over-summering in the southern Yellow Sea  

作　　者：王延清 李超伦 刘梦坛 金鑫 

机构地区：[1]Key Laboratory of Marine Ecology and Environmental Sciences,Institute of Oceanology,Chinese Academy of Sciences [2]University of Chinese Academy of Sciences [3]Laboratory for Marine Ecology and Environmental Science,Qingdao National Laboratory for Marine Science and Technology [4]Jiaozhou Bay Marine Ecosystem Research Station,Chinese Ecosystem Research Network

出　　处：《Chinese Journal of Oceanology and Limnology》2017年第4期874-882,共9页中国海洋湖沼学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China(Nos.41076099,41121064,41406159);the National Basic Research Program of China(973 Program)(No.2011CB403604)

摘　　要：Over-summering is a crucial period for Calanus sinicus in the southern Yellow Sea,where it is a key member of the zooplankton community.Lipids play an important role in copepod diapause,which is part of their over-summering strategy.We investigated how different fatty acids and lipid classes,including wax esters,changed during over-summering of C.sinicus during three cruises in June and August 2011 and November 2010,corresponding to the pre-,during and post-diapause periods,respectively.Large amounts of lipids were accumulated,mainly wax esters as previously found in C.finmarchicus during its diapause,and most of the storage lipids were used during over-summering.Wax ester polyunsaturated fatty acids(PUFAs) showed the most variation of the fatty acids(FAs),while the percentage composition of FAs in polar lipids was relatively stable.Selective use of wax ester PUFAs has already been shown to play important roles in the winter diapause of Calanus species in other regions,and our FA results show that this is the case for the Yellow Sea Cold Bottom Water(YSCBW) population that diapauses in summer.Over-summering is a crucial period for Calanus sinicus in the southern Yellow Sea, where it is a key member of the zooplankton community. Lipids play an important role in copepod diapause, which is part of their over-summering strategy. We investigated how different fatty acids and lipid classes, including wax esters, changed during over-summering of C. sinicus during three cruises in June and August 2011 and November 2010, corresponding to the pre-, during and post- diapause periods, respectively. Large amounts of lipids were accumulated, mainly wax esters as previously found in C. finmarchicus during its diapause, and most of the storage lipids were used during over-summering. Wax ester polyunsaturated fatty acids （PUFAs） showed the most variation of the fatty acids （FAs）, while the percentage composition of FAs in polar lipids was relatively stable. Selective use of wax ester PUFAs has already been shown to play important roles in the winter diapause of Calanus species in other regions, and our FA results show that this is the case for the Yellow Sea Cold Bottom Water （YSCBW） population that diapauses in summer.

关 键 词：Calanus sinicus LIPID wax ester polar lipid polyunsaturated fatty acids （PUFAs） 

分 类 号：Q493.5[生物学—生理学]