Food consumption and ecological conversion efficiency of a marine small-size fish,Ammodytes personatus,determined in laboratory

The ecological energetic parameters of Ammodytes personatu s (Girard), such as food consumption, growth and ecological conversion efficie ncy, were determined by gut content method in controlled conditions of laborator y. The results indicated that: (1)Relationship between the body weight and cor responding empty stomach weight could be described as W = 0 271 e 79 .984·ESW , and from above relationship, the calculating equation of instan taneous food content in stomach could be obtained S t =100×[SW-(Ln W+1.305)/79.984]/W; (2) Relationship between instantaneous food content in stomach and corresponding time could be described as S t=1.784e - 0.214 t , and instantaneous gastric evacuation rate calculated by above form ula was 0.214g/100g·h (W.W.); (3) Food consumption calculated according to Eggers’ formula was 22.53 g/100 g·d (W.W.)or 60.14 kJ/100g·d;(4) Because re al determining value of growth was 3.45 g/100 g·d (W.W.) or 22.94 kJ/100 g ·d, ecological conversion efficiency could be evaluated, which was 15.34% (W.W.) or 38 14% kJ.