不同大小玉筋鱼摄食、生长和生态转换效率的比较

COMPARING THE FOOD CONSUMPTIONS, GROWTHS AND CONVERSION EFFICIENCIES OF SANDLANCE (Ammodyte personatus Girard) BETWEEN TWO WEIGHT GROUPS

本研究将Eggers模型移入实验室大型玻璃钢水槽中,以细脚长虫戎为饵料,在流水条件下,比较了黄渤海主要中上层小型鱼类玉筋鱼大小两种体重组的摄食、生长和生态转换效率等生态能量学特征。结果表明:小个体的摄食率、生长率和生态转换效率分别为 12.36gW.W./100g/d或12.44kJ/100g/d,2.22 gW. W./100g/d 或 9. 09 kJ/100g/d, 0. 18% W. W.或0.73%kJ;大个体的摄食率、生长率和生态转换效率分别为9.16 gW.W./100g/d或9.22 kJ/100g/d,0.83 gW.W./100g/d或3.41 kJ/100g/d,0.09%W.W.或0.37%kJ。不管是以湿重还是以能量计算,小个体的都比大个体的要高。

The ecological energetic parameters, such as food consumption(C), growth(G) and ecological conversion efficiency(E), of two weight groups' sandlances fed with Themisto gracilipes were determined by gut content method in controlled conditions of laboratory. The results indicated that:Those parameters such as C, G and E of small weight group are 12.36gW.W./100g/d or 12.44kJ/100g/d, 2.22 gW.W./100g/d or 9.09 kJ/100g/d, 0.18%W.W. or 0.73%kJ; those of big weight group are 9.16 gW.W./100g/d or 9.22 kJ/100g/d, 0.83 gW.W./100g/d or 3.41 kJ/100g/d, 0.09%W.W or 0.37%kJ. The parameters values of small weight group, not only in wet weight but also in energy, are both more than those of big one.