XXXX Composition of Freshwater Wild Fish in Subalpine Lakes: A Comparative Study.

@entity1 @entity5204 @entity844 @entity8393 @entity22485 @entity23936 @entity8981 @entity31094 @entity9540 @entity4601 @entity16885 @entity9539 @entity7136 @entity1718 @entity30947
UNASSIGNED: In this study, the proximate and @entity844 compositions of the muscle tissue of 186 samples of fish belonging to fifteen species of freshwater fish harvested in subalpine lakes ( @entity22485 , shad, @entity30947 , whitefish, @entity7136 , pike, black bullhead, @entity31094 , perch, Italian roach, roach, rudd, @entity23936 , chub and @entity16885 ) 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 @entity844 composition of the muscle lipids was observed. Planktivorous fish showed the lowest amounts of n-3 @entity1718 (p  <  0.05), but the highest @entity8981 ( @entity8981 ) contents, in particular 18:1n-9. Conversely, carnivorous fish showed the highest amounts of @entity1718 and @entity9539 (p  <  0.05), but the lowest @entity8981 contents. Omnivorous fish showed substantial proportions of n-3 @entity1718 and the highest contents of @entity9540 . 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 @entity5204 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 @entity1 consumption to meet dietary n-3 fatty acid requirements. Nevertheless, the more frequently consumed and appreciated fish, shad and whitefish, had @entity8393 and @entity4601 contents in the range 900-1,000  mg 100  g(-1) fresh fillet.
