NDLI: Fatty Acid Composition of Freshwater Wild Fish in Subalpine Lakes: A Comparative Study

Content Provider	Springer Nature Link
Author	Vasconi, Mauro Capri, Fabio Bellagamba, Federica Busetto, Maria Letizia Bernardi, Cristian Puzzi, Cesare Moretti, Vittorio Maria
Copyright Year	2014
Abstract	In this study, the proximate and fatty acid compositions of the muscle tissue of 186 samples of fish belonging to fifteen species of freshwater fish harvested in subalpine lakes (bleak, shad, crucian carp, whitefish, common carp, pike, black bullhead, burbot, perch, Italian roach, roach, rudd, wels catfish, chub and tench) were investigated. Most of the fish demonstrated a lipid content in the fillet lower than 2.0 g 100 g$^{−1}$ wet weight (range 0.6–9.7). A strong relationship between feeding behavior and fatty acid composition of the muscle lipids was observed. Planktivorous fish showed the lowest amounts of n-3 fatty acids (p < 0.05), but the highest monounsaturated fatty acid (MUFA) contents, in particular 18:1n-9. Conversely, carnivorous fish showed the highest amounts of saturated fatty acids and n-3 fatty acids (p < 0.05), but the lowest MUFA contents. Omnivorous fish showed substantial proportions of n-3 fatty acids and the highest contents of n-6 fatty acids. Principal component analysis showed a distinct separation between fish species according to their feeding habits and demonstrated that the most contributing trophic markers were 18:1n-9, 18:3n-3, 22:6n-3 and 20:4n-6. The quantitative amounts n-3 polyunsaturated fatty acid in muscle tissues varied depending on the fish species, the lipid content and the feeding habits. Some species were very lean, and therefore would be poor choices for human consumption to meet dietary n-3 fatty acid requirements. Nevertheless, the more frequently consumed and appreciated fish, shad and whitefish, had EPA and DHA contents in the range 900–1,000 mg 100 g$^{−1}$ fresh fillet.
Starting Page	283
Ending Page	302
Page Count	20
File Format	PDF
ISSN	00244201
Journal	Lipids
Volume Number	50
Issue Number	3
e-ISSN	15589307
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-12-18
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Subalpine lakes Freshwater fish Fatty acids Trophic markers Fish nutrition Lipidology Neurochemistry Medical Biochemistry Nutrition Medicinal Chemistry Microbial Genetics and Genomics
Content Type	Text
Resource Type	Article
Subject	Cell Biology Organic Chemistry Biochemistry

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