【摘要】 <正> 带鱼Trichiurus haumela(Forsk■l)广分布于渤海、黄海、东海和南海,种群较为复杂,国内外学者已进行过多次研究,但仍需进一步探讨。我们曾在研究中国沿海带鱼的耳石与鱼体相对生长的地理变异的基础上,将中国沿海带鱼划分为四个地理种群,即:渤海-黄海种群:东海北部种群;东海南部-粤东种群及南海种群。本文是对东海南部-粤东种群作进一步的研究。主要依据鱼群各项相对生长指标的差异对栖息于台湾浅滩海域的带鱼种群问题进行探讨。更多还原

【Abstract】 This paper deals with the population of hairtails inhabiting in the region of Taiwan Bank by comparision of the differences in the relative growth and some variations on biological characters. The 603 samples were collected from the south and the north areas of the Taiwan Bank in April, May 1976 and May 1977. 1. The relative growth of the otolith weight to the body length showed very striking difference between the two shoals (α=0.005). The relative growth of the otolith weight of shoal in the north area was better than that in the south area. 2. The relative growth of the otolith weight to body weight between the two shoals exhibited obvious difference (α=0.025). In each body weight groups, the otoliths of the shoal in the south area were all heavier than that in the north area. 3. The relationship of body length and body weight between this two shoals had great disparity (α=0.005, ♀α=0.025). The condition factor of shoals in the north area was also higher. 4. In addition, the length composition and the growth of generation of the two shoals manifested difference, and the meristie characters had certain variation. So, we deemed that the two hairtail’s shoals distributing the north and the south areas of Taiwan Bank were two different population.更多还原