Journal
AQUACULTURE
Volume 252, Issue 2-4, Pages 598-607Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.aquaculture.2005.07.027
Keywords
Eriocheir sinensis; fatty acid composition; gross biochemical composition; hepatopancreas; muscle; neutral lipid; polar lipid; starvation
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The effect of feeding and starvation on growth, gross biochemical composition and fatty acid composition of body, muscle and hepatopancreas were investigated in juvenile Chinese mitten-handed crab (Eriocheir sinensis). The growth, biochemical composition, and relative composition of fatty acids were influenced by starvation. During starvation, body fat, especially hepatopancreatic neutral lipid content, decreased significantly (p < 0.01). In hepatopancreas, there were marked relative decreases of 14:0, 16:0, 16:1n - 7 and 18: 1n - 9 fatty acids and relative increases of 18:2n - 6, 18:3n - 3, 20:5n - 3 and 22:6n - 3 when these were compared with the controls during starvation prolonged 70 days (p < 0.01). Meanwhile, in muscle 14:0 and 16:0 saturated fatty acids decreased remarkably and 18:2n - 6 and 18:3n - 3 polyunsaturated fatty acids increased significantly at the end of study (day 70) (p < 0.01). Preference of utilization of fatty acids from hepatopancreas during starvation was as follows: 14:0 > 16:0 > 16:1n-7 > 18:1n-9 and conservation as follows: 18:3n-3 > 18:2n-6 > 22:6n-3 > 20:5n-3 > 20:4n-6, and 14:0 > 16:0 and 18:3n-3 > 18:2n-6 from muscle. The changes of fatty acids were smaller in muscle than in hepatopancreas. The experimental results also indicated the tolerance of juvenile Chinese mitten-handed crab to starvation was over 70 days. (c) 2005 Elsevier B.V. All rights reserved.
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