【摘要】 通过对在淡水中培育大麻哈幼鱼生长和形态测定发现:大麻哈幼鱼在2.5%日投喂量时特定生长率较高;大麻哈幼鱼体重与体长的关系符合幂函数,其关系式为W=0.661L2.1635;随着大麻哈幼鱼的生长,其肥满度有所增加,但增加幅度较小;全长/体长、体长/头长、背吻距/背尾距的比值较体长/体高、头长/吻长、头长/眼径和头长/眼间距的比值变化小,背吻距/背尾距的比值接近1,而大麻哈鱼生殖群体的比值在1.13～1.31之间。更多还原

【Abstract】 The growth and morphology of young chum salmon,raised in freshwater were measured.The results showed that the specific growth rate of young chum salmon was higher when fed with 2.5% volume of body weight daily;The relationship between body weight and body length was in line with the power function,and its equation was W = 0.661L2.1635;With the growth of young chum salmon,its relative fatness was increased slightly and slowly;The values of full length /body length,body length /head length and dorsal snout distance /dorsal tail distance were smaller than body length /body height,head length /snout length,head length /eyes interal and head length /horizontal diameter of eye;the ratio of dorsal snout distance /dorsal tail distance was close to1 in young Chum salmon,whereas the ratio was 1.13～1.31 in broodstock chum salmon.更多还原