ISSN:
1439-0426
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Biology
,
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
The muscle tissue of coregonid ‘lavarello’ (Coregonus forma hybrida) from Lake Bolsena (Central Italy), ‘bondella’ (C. macrophthalmus) from Lake Maggiore (Northern Italy) and ‘bondelle’ (C. macrophthalmus) from Lake Neuchǎtel (Switzerland), sampled during the whitefishes' growth season, were analysed to evaluate the fat content and the fatty acid composition. In fact, the lipid profile of the muscle is strongly subjected to environmental influence and, as a consequence, its use as a parameter allowing ‘identification of origin’ of the fish products may be possible. ω3 HUFA (highly unsaturated fatty acids = C 20:5 + C 22:5 + C 22:6) content of fish from Lake Bolsena was lower than in coregonid from Lake Maggiore, while the saturated fraction (SFA) was higher. Fish from Lake Neuchǎtel showed a lower ω3 HUFA proportion than in the two other lakes. These data demonstrate that significant differences in fatty acid composition occur in similar fish species living in different lakes. Further studies are required to identify the role of each environmental variable, with special attention to temperature and food range.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1439-0426.1996.tb00061.x
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