| Starvation on changes in growth and fatty acid composition of juvenile red swamp crawfish, Procambarus clarkii |
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| 作者姓名： | 温小波 库夭梅 周开亚 |
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| 作者单位： | Department of Aquaculture South China Agriculture University Guangzhou 510642 China Department of Biology Nanjing Normal University Nanjing 210097 China，Department of Aquaculture South China Agriculture University Guangzhou 510642 China，Department of Biology Nanjing Normal University Nanjing 210097 China |
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| 基金项目： | Supported by the Scientific Fund of Chinese Postdoctor (No. 2002032195). |
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| 摘 要： | The effect of starvation on physiological and biochemical indicators of body, muscle and hepatopancreas were investigated for juvenile red swamp crawfish (Procambarus clarkii), and the results showed the effect was obvious. In a 70-day starvation experiment, mean body weight, exuvial rate, ab- dominal muscle ratio and hepatosomatic index decreased significantly. The percentage of protein, fat, ash and moisture were also significantly affected. The protein content decreased sharply at Day 30 onward and the percentage of fat decreased rapidly from Day 50 and on. The percentages of ash and moisture started to increase significantly at Day 40 and 30 respectively. After the starvation experiment, the hepa- topancreatic total and neutral lipid content decreased slightly from 23.90% to 20.39% and 73.75% to 70.35%, while the hepatopancreatic polar lipid content increased from 23.81% to 27.32%. On the other hand, all the muscular total, neutral and polar lipid contents, and the muscular fatty acid compositions did not change significantly except for the hepatopancreatic fatty acid composition. The relative percentages of 14:0, 16:0, 16:1n-7 and 18:1n-9 were decreased by 55.17%, 11.11%, 8.5% and 6.70% from the initial values, and the relative percentages of 18:2n-6, 18:3n-3, 20:4n-6, 20:5n-3 and 22:6n-3 increased obvi- ously from 5.2%, 3.9%, 2.4%, 10.6%, and 13.7% to 7.1%, 5.0%, 2.8%, 11.5%, and 14.4% respectively. Preference of utilization of fatty acids from hepatopancreas during starvation was as follows: 14:0>16:0>16:1n-7>18:1n-9, and the conservation of highly unsaturated fatty acids was in the order of: 18:2n-6 >18:3n-3>20:4n-6>20:5n-3>22:6n-3.
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| 关 键 词： | 小龙虾 脂肪酸 生物化学 沼泽 蛋白质 |
| 收稿时间： | 2005-05-27 |
| 修稿时间： | 2006-08-29 |
Starvation on changes in growth and fatty acid composition of juvenile red swamp crawfish, <Emphasis Type="Italic">Procambarus clarkii</Emphasis> |
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| Wen?Xiaobo,Ku?Yaomei,Zhou?Kaiya.Starvation on changes in growth and fatty acid composition of juvenile red swamp crawfish, Procambarus clarkii[J].Chinese Journal of Oceanology and Limnology,2007,25(1):97-105. |
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| Authors: | Wen Xiaobo Ku Yaomei Zhou Kaiya |
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| Institution: | (1) Department of Aquaculture, South China Agriculture University, Guangzhou, 510642, China;(2) Department of Biology, Nanjing Normal University, Nanjing, 210097, China |
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| Abstract: | The effect of starvation on physiological and biochemical indicators of body, muscle and hepatopancreas were investigated for juvenile red swamp crawfish (Procambarus clarkii), and the results showed the effect was obvious. In a 70-day starvation experiment, mean body weight, exuvial rate, ab- dominal muscle ratio and hepatosomatic index decreased significantly. The percentage of protein, fat, ash and moisture were also significantly affected. The protein content decreased sharply at Day 30 onward and the percentage of fat decreased rapidly from Day 50 and on. The percentages of ash and moisture started to increase significantly at Day 40 and 30 respectively. After the starvation experiment, the hepa- topancreatic total and neutral lipid content decreased slightly from 23.90% to 20.39% and 73.75% to 70.35%, while the hepatopancreatic polar lipid content increased from 23.81% to 27.32%. On the other hand, all the muscular total, neutral and polar lipid contents, and the muscular fatty acid compositions did not change significantly except for the hepatopancreatic fatty acid composition. The relative percentages of 14:0, 16:0, 16:1n-7 and 18:1n-9 were decreased by 55.17%, 11.11%, 8.5% and 6.70% from the initial values, and the relative percentages of 18:2n-6, 18:3n-3, 20:4n-6, 20:5n-3 and 22:6n-3 increased obvi- ously from 5.2%, 3.9%, 2.4%, 10.6%, and 13.7% to 7.1%, 5.0%, 2.8%, 11.5%, and 14.4% respectively. Preference of utilization of fatty acids from hepatopancreas during starvation was as follows: 14:0>16:0>16:1n-7>18:1n-9, and the conservation of highly unsaturated fatty acids was in the order of: 18:2n-6 >18:3n-3>20:4n-6>20:5n-3>22:6n-3. |
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| Keywords: | Procambarus clarkii fatty acid composition gross biochemical composition hepatopancreas muscle starvation |
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