Lipid classes consumption related to fasting and thermal stress in the shrimp Macrobrachium borellii

POLLERO, R.J.; GONZALEZ BARO, M.R.; IRAZU, C.E.

COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. PART B, BIOCHEMISTRY & MOLECULAR BIOLOGY.

ELSEVIER SCIENCE INC

Lugar: Amsterdam; Año: 1991 vol. 99B p. 233 - 238

1096-4959

1. The effect of the environmental temperature on lipids of unfed and fed shrimps, was studied.Lipid and fatty acid classes from the hepatopancreas, gills and muscle, were analyzed.2. Each organ responds in a different way to food deprivation or to changes in the water temperature. The hepatopancreas is the main organ where lipids are stored and great variations are observed.3. A 4-week fasting did not modify energetic lipid levels of the hepatopancreas either at low environmental temperature (13°C) or moderate temperature (14-20°C). In contrast, a significant consumption of triacylglycerols and free fatty acids at high temperature (29°C) was found.4. Consumption of neutral lipids due to thermal stress also appeared in the fed animals.5. The changes in the fatty acid composition could be attributed to those found in the lipids they belong to. Besides, such changes partially reflected the composition of the diet.