Diet of chaetognaths Sagitta crassa and S. nagae in the yellow sea inferred from gut content and fatty acid analyses
SCOPUS
KCI
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Title
- Diet of chaetognaths Sagitta crassa and S. nagae in the yellow sea inferred from gut content and fatty acid analyses
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Author(s)
- Yoon, H.; Ko, A.-R.; Kang, J.-H.; Choi, J.K.; Ju, S.-J.
- KIOST Author(s)
- Yoon, Hyunjin(윤현진); Kang, Jung Hoon(강정훈); Ju, Se Jong(주세종)
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Alternative Author(s)
- 윤현진; 강정훈; 주세종
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Publication Year
- 2016
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Abstract
- To understand the diet of chaetognaths, the gut content and fatty acid trophic makers (FATMs) of Sagitta crassa and S. nagae, which are the most predominant species of chaetognath in the Yellow Sea, were analyzed. Gut contents of the two species examined by microscopic analysis revealed that copepods are the major components of the diet (> 70% of gut contents) and there was no significant changes in the gut contents of two species collected in spring and summer season. Although 16:0, 20:5(n-3) (Eicosapentaenoic acid) and 22:6(n-3) (Docosahexanoic acid), which are known as phytoplankton FA markers, were the most dominant among the fatty acids in both chaetognath species, the detection of copepod FA markers, 20:1(n-9) (Gadoleic acid) and 22:1(n-11) (Cetoleic acid), provided evidence that their food sources include copepods. These results suggest that S. crassa and S. nagae are carnivores and mainly feed on copepods in the Yellow Sea. © 2016, Korea Ocean Research and Development Institute. All rights reserved.
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ISSN
- 1598-141X
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/2299
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DOI
- 10.4217/OPR.2016.38.1.035
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Bibliographic Citation
- Ocean and Polar Research, v.38, no.1, pp.35 - 46, 2016
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Publisher
- Korea Ocean Research and Development Institute
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Subject
- benthos; diet; fatty acid; invertebrate; marine environment; stomach content; Pacific Ocean; Yellow Sea; Chaetognatha; Copepoda; Sagitta crassa
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Keywords
- Chaetognath; Diet; Fatty acid; Gut content; Yellow Sea
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Type
- Article
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Language
- Korean
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Document Type
- Article
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