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根据2003年南沙群岛西南陆架区春秋2季调查的资料,结合1990～1993年的历史资料,分析南沙群岛西南陆架区金线鱼的资源现状。结果表明,渔获率有季节变动,秋季(1.13kg·h-1)高于春季(1.07kg·h-1),群体主要分布于91～100m水深。其群体组成也有季节差异,秋季的平均体长、平均体重大于春季,春季优势体长范围为151～190mm,秋季优势体长范围为141～220mm。该鱼种资源已明显衰退,平均渔获率由3.32kg·h-1减为1.10kg·h-1,资源密度由43.37kg·km-2减为14.37kg·km-2,资源量由3178.60t减为1053.15t,现存资源量只有原始资源量的33.24%。并提出合理利用该鱼种资源的管理措施和建议。
According to the data from the investigation of spring and autumn in the Nansha Islands shelf area in 2003 and the historical data from 1990 to 1993, the current situation of the golden thread fish in the southwestern shelf area of the Nansha Islands was analyzed. The results showed that there was a seasonal change in the catch rate, which was higher in autumn (1.13kg · h-1) than in spring (1.07kg · h-1) and mainly distributed in 91-100m water depth. The average body length of autumn and average body weight were greater than that of spring. The dominant body length ranged from 151 mm to 190 mm in spring and ranged from 141 mm to 220 mm in autumn. The stock resources have obviously declined, with the average catch rate reduced from 3.32kg · h-1 to 1.10kg · h-1, the resource density reduced from 43.37kg · km-2 to 14.37kg · km-2, and the resource amount increased from 3178.60 t reduced to 1053.15t, the existing resources of only 33.24% of the original amount of resources. And put forward the management measures and suggestions for rational utilization of the species.