

FOLLOWUS
1.Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
2.Laboratory for Marine Ecology and Environmental Science, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China
3.Engineering and Technology Department, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
4.Jiaozhou Bay National Marine Ecosystem Research Station, Chinese Academy of Sciences, Qingdao 266071, China
5.Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
6.Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
7.University of Chinese Academy of Sciences, Beijing 100049, China
Chaolun LI, E-mail: lcl@qdio.ac.cn
Received:16 September 2020,
Accepted:09 November 2020,
Online First:06 January 2021,
Published:2022-01
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Yanqing WANG, Zhencheng TAO, Chaolun LI, et al. Factors affecting lipid and fatty acid composition of
Yanqing WANG, Zhencheng TAO, Chaolun LI, et al. Factors affecting lipid and fatty acid composition of
The factors affecting lipid and fatty acid composition of copepod
Calanus sinicus
in the Yellow Sea (YS) and the East China Sea (ECS) were examined in this study. In spring
there were significant differences between these two regions for both environmental conditions and food availability. Such regional difference significantly influenced the lipid and fatty acid profiles of
C. sinicus
. Our results show that
C. sinicus
has a higher lipids content in ECS
especially for wax ester and triglyceride lipids
indicating a more active and efficient predation. According to BIO-ENV analysis
the variation of lipids profiles may be influenced majorly by water temperature. Moreover
the fatty acids (FAs) profiles of
C. sinicus
were also different between YS and ECS
especially in the four major contributors
C22:1ω11
eicosapentaenoic acid (EPA)
docosahexenoic acid (DHA)
and C20:1ω9. The considerable amounts of self-biosynthesized FAs of herbivorous copepod (C22:1ω11 and C20:1ω9) and low DHA/EPA ratio may indicate that
C. sinicus
in ECS feed mainly on phytoplankton comparing to those in YS. The fatty acid profiles of
C. sinicus
were affected by the differences in food availability.
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