And the results obtained are summarized as follows : ( 1 ) the mean cpue of yearly total landings of the double - trap net has been increasing more than three times while compared with that of the single - trap net 其中，尤以底栖性的红甘? 、浪人? 、双带? 、白?及?鱼，与洄游性的鲔、 ? 、旗鱼、塞氏? 、细文鳐鱼及鬼头刀等的增产，明显地受网型改变之影响。
