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- Title
Effect of habitat and motor activity of molluscs on fatty acid composition of triglycerides and phospholipids.
- Authors
E. Arakelova; M. Chebotareva; S. Zabelinskii; V. Ivanova
- Abstract
Abstract A comparative analysis of fatty acids (FA) in neutral lipids and phospholipids of digestive gland and pedal muscle has been performed in molluscs from various ecological groups differing by belonging to sea or fresh water, trophic types or the associated motor activity. In freshwater pulmonary gastropods Lymnaea stagnalis and Lymnaea ovalis and marine prosobranchial molluscs Buccinum undatum and Littorina littorea the total content of ω3-acids in phospholipids of the studied tissues differed more than twice, predominantly due to the combined effect of temperature and salinity of the habitat. The lower viscosity of cell membranes in marine species (ω3/ω6 B. undulatum (L. littorea inhabiting the high-low tide littoral was inferior to freshwater pulmonary gastropods and to the marine predator, as it stops moving twice a day during the low tide. In phospholipids of pedal muscle of this mollusc the amount of long-chain polyunsaturated C: 22 FA was 3–6 times lower than that in other studied species, which might possibly indicate the role of these acids in functioning of the pedal muscle contractile tissue. On the whole, use of the FA characteristics as the parameters determining belonging to certain ecological group requires a certain caution due to a complex action of biotic and abiotic factors on the animal metabolism. The exception is the ω3/ω6 ratio in total phospholipids of fresh water and marine gastropods.
- Subjects
WILDLIFE-habitat relationships; MOTOR ability; GASTROPODA physiology; FATTY acids; TRIGLYCERIDES; PHOSPHOLIPIDS; COMPARATIVE studies; DIGESTIVE organ physiology
- Publication
Journal of Evolutionary Biochemistry & Physiology, 2009, Vol 45, Issue 1, p51
- ISSN
0022-0930
- Publication type
Article
- DOI
10.1134/S0022093009010049