渤、黄海蓝点马鲛种群鉴别的研究

本文讨论了渤海和黄海海域蓝点马鲛的种群问题,通过对各项性状特征差异的分析、计算以及生殖、分布回游习性的综合对比判别的结果表明:渤海与黄海诸海域群体均属同一种群。但黄海南部群体可视为同一种群的不同群体。

THE IDENTIFICATIONS OF POPULATIONS OF THE SPANISH MACKEREL, SCOMBEROMORUS MPHONIUS (CUVIER ET VALENCIENNES) IN THE BOHAI SEA AND THE YELLOW SEA

This paper deals with the population identification of the Spanish mackerel. Samples of spawning stocks, all two-yearold mature fish, were collected from spawning areas of the Bohai Sea, the southern, central and the northern parts of the Yellow Sea during the spawning period from May 2nd to 25th, 1984-1985.According to the 75% rule of subspecies identifications there is no speciations of subspecies among the above-mentioned stocks by means of coefficient of difference. Eleven meristical characters of the Spanish mackerel showed that there is significant differences between the stock of the Southern Yellow Sea and the stocks of the .other areas. The result of discriminate function analysis also showed that there is also differences between the stocks of the Southern Yellw Sea and the stocks of the other areas, and the difference between the stocks of other areas has no statistical meaning.The analysed result was coincided with the spawning and migration characters of diffe-reant stocks of the Spanish mackerel. So we considered that Spanish mackerel described above were all from the same population but the stock of the Southern Yellow Sea, may be a different.