Changes in Sediment Fatty Acid Composition during Passage through the Gut of Deposit Feeding Holothurians: Holothuria atra (Jaeger, 1883) and Holothuria leucospilota (Brandt, 1835)
Joint Authors
Tsuchiya, Makoto
Mfilinge, Prosper
Source
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-03-02
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Sea cucumbers Holothuria atra and Holothuria leucospilota play an important role in the bioturbation of sediment in coral reef and rocky intertidal ecosystems.
This study investigated changes in sediment fatty acid (FA) composition during gut passage in H.
atra and H.
leucospilota.
The FA composition did not differ significantly between species.
Comparison of FA composition in ambient sediment (AS), foregut (FG), midgut (MG), hindgut (HG), and faecal pellets (FPs) indicated that marked changes in FA composition occurred during passage through the gut of H.
atra and H.
leucospilota.
Saturated fatty acids (SAFAs), monounsaturated fatty acids (MUFAs), polyunsaturated fatty acids (PUFAs), and branched fatty acids (BrFAs) were significantly higher in FG than in AS, suggesting that both species selectively ingested nutrient rich particles.
Significant reduction of SAFAs, MUFAs, PUFAs, and BrFAs occurred in MD and HD, with complete elimination of most PUFAs in FPs.
A decrease in PUFAs 20:5ω3, 18:4ω3, 22:5ω3, 22:6ω3, 18:2ω6, 18:3ω3, 18:3ω6, odd-numbered BrFAs, and MUFA 18:1ω7 indicated that algal detritus and bacteria were important part of diet.
These results have implications for the fate of specific dietary FAs, especially ω3 and ω6, and the contribution holothurian FPs make to the FA composition of coral reef and rocky intertidal ecosystems.
American Psychological Association (APA)
Mfilinge, Prosper& Tsuchiya, Makoto. 2016. Changes in Sediment Fatty Acid Composition during Passage through the Gut of Deposit Feeding Holothurians: Holothuria atra (Jaeger, 1883) and Holothuria leucospilota (Brandt, 1835). Journal of Lipids،Vol. 2016, no. 2016, pp.1-9.
https://search.emarefa.net/detail/BIM-1108931
Modern Language Association (MLA)
Mfilinge, Prosper& Tsuchiya, Makoto. Changes in Sediment Fatty Acid Composition during Passage through the Gut of Deposit Feeding Holothurians: Holothuria atra (Jaeger, 1883) and Holothuria leucospilota (Brandt, 1835). Journal of Lipids No. 2016 (2016), pp.1-9.
https://search.emarefa.net/detail/BIM-1108931
American Medical Association (AMA)
Mfilinge, Prosper& Tsuchiya, Makoto. Changes in Sediment Fatty Acid Composition during Passage through the Gut of Deposit Feeding Holothurians: Holothuria atra (Jaeger, 1883) and Holothuria leucospilota (Brandt, 1835). Journal of Lipids. 2016. Vol. 2016, no. 2016, pp.1-9.
https://search.emarefa.net/detail/BIM-1108931
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1108931