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Seasonal changes in lipid classes and fatty acid composition in the digestive gland of Pecten maximus.

Published on Feb 1, 2003in Comparative Biochemistry and Physiology B1.99
· DOI :10.1016/S1096-4959(02)00286-5
Antonio J. Pazos14
Estimated H-index: 14
(University of Santiago de Compostela),
José L. Sánchez8
Estimated H-index: 8
(University of Santiago de Compostela)
+ 2 AuthorsM. Abad14
Estimated H-index: 14
(University of Santiago de Compostela)
Abstract
Abstract Seasonal variations in lipid classes and fatty acid composition of triacylglycerols and phospholipids in the digestive gland of Pecten maximus were studied over a period of 16 months. Acylglycerols predominated (19–77% of total lipids), in accordance with the role of the digestive gland as an organ for lipid storage in scallops. Seasonal variations were mainly seen in the acylglycerol content, while phospholipids (2.5–10.0% of total lipids) and sterols (1.9–7.4% of total lipids) showed only minor changes. The most abundant fatty acids were 14:0, 16:0, 18:0, 16:1(n-7), 18:1(n-9), 18:1(n-7), 18:4(n-3), 20:5(n-3) and 22:6(n-3) and these showed similar seasonal profiles in both, triacylglycerol and phospholipid fractions. In contrast to the phospholipid fraction, the triacylglycerol fraction contained more 20:5(n-3) than 22:6(n-3). In three phospholipid samples we noted a high percentage of a 22-2-non-methylene-interrupted fatty acid, previously described to have a structural role in several bivalve species. The main polyunsaturated fatty acids displayed important seasonal variations parallel to those of the acylglycerols, suggesting good nutritional conditions. A positive correlation existed between the level of saturated fatty acids and temperature, whereas the levels of polyunsaturated fatty acids correlated negatively with temperature.
  • References (34)
  • Citations (56)
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References34
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Cytological and biochemical changes in the digestive gland of Pecten maximus throughout a one-year period were investigated in the Bay of Brest (France) relative to lipid storage and glycogen and α-amylase concentrations in tubuloacinar terminations. Seasonal variations in both cell structure and biochemical composition were observed. These changes were independent of the tidal cycle, but correspond to phytoplankton abundance. From November to January, cells of digestive acini were hypertrophied...
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Copyright (c) 1997 Elsevier Science B.V. All rights reserved. Seasonal changes in condition and biochemical composition of striated adductor muscle, digestive gland and female gonad of raft cultured Pecten maximus L. in the Ria de Arousa (Galicia, N.W. Spain) were studied over 16 months in relation to environmental conditions and reproductive events. Pecten maximus in the Ria de Arousa showed a clear cycle of energy storage and utilisation. Between March−April and October carbohydrates and prote...
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