【摘要】 本文用判别函数法,计算带鱼左胸鳍鳍条数、背鳍鳍条数、臀鳍棘数、腹椎骨数、左上鳃耙数和左下鳃耙数等六项分节特征的数据,比较闽南—台湾浅滩渔场南部海区和北部渔区带鱼之间的差别,结合1975年和1976-1977年在相同月份鱼卵仔鱼的数量分布,认为两海区的带鱼应属于不同生态种群。又根据鱼卵仔鱼的调查材料和渔业生产情况,说明本渔场的带鱼除了春、冬季夹杂泅游性带鱼外,存在着定居性带鱼,这部分带鱼有利于渔业管理,在估计资源状况时应予考虑。更多还原

【Abstract】 A Comparison was made between the hail-tail populations from south and north regions of South-Fujian and Taiwan Bank Fishing Ground, the differences estimated from the data of merictic Characters, including the numbers of the fin ray of left pectoral fin and dorsal fin, the number of anal spine, the number of abdominal vertebrae, the numbers of left-upper and left-lower gill rakers, were shown by the method of discrimirate function to be statistically significant. It was found that the eggs and larvae of hair-tails hauled at the same month in. 1975-77 in these two regions were at the same stage of development. Based on these evidences, it was suggested that the hair tail of these two regions should be divided into different ecological populations. They spawn in this fishing ground and should be considered as local populations of hair-tails. These groups of hair tails are of great advantage to administration of fisheries, it should be taken into consideration when we estimate the fishery resources of this coastal region.更多还原