摘要
以玉筋鱼为饵料生物， 采用室内流水模拟实验法研究了摄食水平和饵料种类对真鲷能量收支各组分和能量收支分配模式的影响。结果表明，真鲷的生长量、总代谢量、排泄量及生态转换效率均随日粮水平升高呈减速增长趋势，二者之间的定量关系均可用对数曲线加以定量描述；不同生物饵料能造成真鲷摄食、生长、排泄和总代谢水平的显著差异，但却不能改变以比能值为单位的生态转换效率。依据各收支过程的量化结果，可得到真鲷的能量分配模式。玉筋鱼：１00%日粮水平，１00C＝4.60F+7.83U+66.１１R+2１.46G；78.4%日粮水平，１00C＝5.83F+7.47U+55.9１R+30.80G；50.１%日粮水平，１00C＝4.34F+7.76U+59.75R+28.１5G；27.6%日粮水平，１00C＝2.73F+8.00U+63.23R+26.03G；鹰爪糙对虾：１00%日粮水平，１00C＝2.0１F + １１.１0U+57.99R+28.90G。真鲷的各能量收支分配率随摄食水平不同有较显著差异； 代谢能分配率和排泄能分配率随摄食水平增大呈U型变化趋势，而生长能分配率却恰恰相反。除摄食高蛋白饵料时引起排泄能分配率增加外，摄食不同饵料对真鲷的能量分配模式影响不显著。
The energy budget of Pagrosomus major was determined by continuousflow simulating method in laboratory under different ration level and food species condition.The results s howed that excretion energy (R), total metabolism energy (R),and growth energy (G) all tended to increase with ration level, with different feed,there was remarkable change of each enenrgy bu dget constituent, but no remarkable change in the ecological conversion efficiency. The energy ass igning models could be expressed with the following budget formulas: Ammodytes personatus: １00% FL １00C＝4.60 F + 7.83U +66.１１R + 2１.46G 78.4%FL１00C＝5.83F + 7.47U + 55.9１R + 30.80G 50.１%FL１00C＝4.34F + 7.76U + 59.75R + 28.１5G 27.6%FL１00C＝2.73F + 8.00U +63.23R + 26.03G Trachypenaeus curvirostris:１00% FL１00C＝2.0１F + １１.１0U +57.99R + 28.90G The energy components in the assigning models changed with ration level.The chan ge of the rates of metabolism energy and excretion energy was Ushaped with ration level rise, but that of growth energy had opposite trend. There was no remarkable difference in the model's energy exc retion rate when different food was fed.
出处
《海洋水产研究》
CSCD
1999年第2期60-65,共6页
Marine Fisheries Research
基金
国家自然科学基金! 497901001
关键词
能量收支
日粮水平
饵料种类
真鲷
Energy budget
Ration level
Food
Pagrosomus major
