【摘要】 根据1998年8月～2004年6月在27°00’～33°30’N、128°30’E以西一带海域作业的流网渔船累计76个航次,共1661197张网片所捕获的941144kg渔获物分鱼种渔捞记录数据,阐述了该海域深水流网渔业资源状况。经查明,其渔获物种类较多,鱼类有65种,优势种类为方头鱼Branchiostegidae、白姑鱼Argyrosonus argentatus、刺鲳Psenopsis anomala三者共占总渔获量的70.1%,其出现频率在87.5%～100%之间,其它种类比重不大,或仅交替出现。该作业平均网产56.92kg/100片网片,渔获量月变化明显,9～10月较多,6～7月较低。主要渔场是舟外渔场,渔获量占总渔获量的35.2%,平均网产60.98kg/100片网片,三大优势种类数量均比其它各渔场高。在调查期间,三大优势种类所占比重变化不大,方头鱼始终居首位,白姑鱼和刺鲳年间变动量互相交替。从上述情况看,虽其资源结构相对较稳定,但与早期深水流网渔业比较,优势种类所占份额尤其方头鱼已有所减少,且年间波动较大,所以应当控制捕捞强度,合理利用,以期达到可持续发展。更多还原

【Abstract】 In light of fish landing classified into different species captured in the deep water areas located in the west of 27°00′～33°30′N?128°30′E in the period from August 1998 to June 2004 in which 76 productions were made and 941,144 kg of fishes was got in 1,661,197 net pieces, a better understanding of the fishery resources in the areas was reached.After a detailed investigation,statistics showed that there were many species among which 65 were fishes,and that the dominant species were Branchiostegidae,Argyrosonus argentatus, Psenopsis anomala.The three species took account for 70.1 % of the total production.Their monthly frequency of occurrence was 87.5 %～100 %;while other species were rarely captured.The average production was 56.92 kg/100 pieces,but it changed from one month to another,reached its peak in September or October and went down to its valley in June or July.The major fishing ground was Zhouwai Fishing ground where the production took account for 35.2 %,with average production of 60.98 kg/100 pieces and the three species production was much higher than that of other places.In all the survey period,the percentage of the three dominant species remained stable,with Branchiostegidae ranking first,followed by Argyrosonus argentatus or Psenopsis anomala. From above-mentioned, although the resource composition is relatively stable, the dominant species, esp., Branchiostegidae,took less account than before and their percentage fluctuated inter-annually.Hence it is imperative to limit fishing strength and to exploit them reasonablly to realize sustainable development.更多还原