论文部分内容阅读
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。
In this paper, we use the discriminant function method to calculate the data of the characteristics of six subfamilies, such as the number of rays of left pectoral fin, the number of dorsal fin, the number of anal fin, the number of abdominal vertebra, the number of left gill rake and the number of left lower gill rake. The differences between octopus in the sea area and in the northern catchment are based on the distribution of the number of larvae in the same month in 1975 and 1976-1977. It is concluded that the octopus in the two sea areas should belong to different ecological populations. According to the survey data of fish and eggs larvae and the fishery production, it shows that except for spring and winter mixed seabream fish, there are settled octopus, which is good for fishery management. In estimating the status of resources, consider.