真鲷在饥饿后恢复生长中的生态转换效率  

ECOLOGICAL CONVERSION EFFICIENCY OF RED SEA BREAM (PAGROSOMUS MAJOR) IN RECOVERY GROWTH AFTER STARVATION

作　　者：张波[1] 孙耀[1] 王俊[1] 郭学武[1] 唐启升[1] 

机构地区：[1]中国水产科学研究院黄海水产研究所,青岛266071

出　　处：《海洋水产研究》1999年第2期38-41,共4页Marine Fisheries Research

基　　金：国家自然科学基金!497901001

摘　　要：在 20℃条件下，对分别饥饿处理 0（对照）、3、6、9、12和15d的真鲷进行了再投饵的恢复生长实验。 结果发现，饥饿 3 和 6 d的真鲷在恢复生长中的特殊生长率、摄食率显著高于对照组，而生态转换效率与对照组无显著差异；饥饿 9、12 和 15 d的真鲷在恢复生长中的特殊生长率和生态转换效率均显著高于对照组，而摄食率与对照组无显著差异。这表明短期饥饿的真鲷通过显著提高摄食水平来达到补偿生长，继续延长饥饿时间则通过显著提高生态转换效率来达到补偿生长。作者认为，真鲷在饥饿后恢复生长中的生态转换效率升高的机制可能有两种：一种是高摄入、低消耗的结果；另一种是某些酶的分泌或活性增加。This recovery growth experiment on red sea bream following deprivation of food for 0(control)、 3 、6 、9、 12 and 15 days, respectively at 20℃.Showed that the sp ecific growth rate and feed rate of groups starved for 3 and 6 days were significantly higher than those of the c ontrol group, but that the ecological conversion efficiency was similar to that of the control group;that t he specific growth rate and ecological conversion efficiency of groups starved for 9、12 an d 15 days was significantly higher than that of the control group; but that the feed rate was similar to tha t of the control group. This result suggests that the compensatory growth in red sea bream of deprived food for 6 days resulted fro m the significant increase of the feed rate in the recovery growth;but that the compensatory growth in red sea bream deprived food for 9、12 and 15 days resulted from the significant increase of the ecologi cal conversion efficiency in the recovery growth. The author considers the mechanism of ecological conversion eff iciency in recovery growth after starvation was due to: 1) Ｈigh feeding rate、low consumption; 2) Ｓecretion and activity of some increasing enzyme.

关 键 词：真鲷 饥饿 恢复生长 生态转化效率 

分 类 号：S965.231[农业科学—水产养殖]