摘要
1998年 8月在一个养虾场蓄水池利用网箱进行了小鳞鱼箴维持日粮与转换效率的研究 .小鳞鱼箴生长率(GR)与日粮 (DR)的关系可表示为GR =14 0 .37DR -2 4.0 3 ;食物转换效率和能量转换效率分别为 13 .96 %和16 .12 % .从生长率和特定生长率计算的小鳞鱼箴维持日粮分别为体重的 17.12 %和 2 0 .39% ,表明从生长率和特定生长率计算维持日粮可能会导致不同的结果 .当日粮水平低于 3 .30 %时 ,小鳞鱼箴生长表现异常 ,意味着它可能利用了网采浮游动物以外的其它食物源 .
The maintenance ration and conversion efficiency of Japanese halfbeak,Hyporhamphus sajori were tested with enclosures installed in a shrimp raising pond.The results showed that there existed an evident relationship between daily ration(DR)and growth rate(GR) of the fish,GR=140.37DR-24.03.The conversion efficiency was 13.96% in biomass or 16.12% in energy.The maintenance ration was 17.12% and 20.39% of body weight in terms of growth rate and specific growth rate,respectively,indicating that it could be deduced from growth rate quite differently from that from specific growth rate in the same experiment.The abnormal growth rate appeared when daily ration was below 3.30% of body weight,implied that Japanese halfbeak may get other food resources besides supplied net zooplankton.
出处
《应用生态学报》
CAS
CSCD
2001年第2期293-295,共3页
Chinese Journal of Applied Ecology
基金
国家自然科学基金!重大资助项目 (49790 1 0 0 1 )
