用实际种群分析法评估东海鲐鱼现存资源量

用实际种群分析法评估了工海及长江口区域鲐鱼近１０年来的现存资源量，结果表明，工海及长江口区域的鲐鱼自１９９７年以来历年的现存资源量分别在１３．２－２３．５万吨和４．１－１２．７万吨之间波动，近年一资源数量稳定在一个较高水平上，而近年鲐鱼的实际捕捞已逐渐接近其现存资源量，说明鲐鱼资源进一步开发利用的潜力不是很大。

STOCK ASSESSMENTOF SCOMBER JAPONISCUS FROM THE EAST CHINA SEA WITH VIRTUAL POPULATION ANALYSIS

Stock sizes of the chub mackerel (Scomber japonicus) from the East China Sea and the area off the mouth of Changjiang river were assessed with virtual population analysis. The result showed that stock sizes of chub mackerel from the East China Sea and the area off the mouth of Changjiang River were fluctuated between 132 000-235 000 and between 41 000-127 000 metric tones respectively in the past decade. The stock sizes of chub mackerel in recent years were stable on the relatively high levels. However, since the actual catches are gradually close to the stock sizes, it seems that there is not very much potential for further exploitation of this species.