长江口刀鲚资源现状及保护研究进展

Research Progress on Resource Status and Protection of Coilia nasus in Yangtze River Estuary

作为重要的洄游性经济鱼类,长江刀鲚(Coilia nasus)自20世纪90年代以来,产量持续下滑,资源严重衰退.概述了20世纪70年代以来刀鲚资源的变动情况,从过度捕捞、生境破坏、水体污染及早期资源损伤等方面分析了刀鲚资源衰退的原因;结合长江刀鲚生殖洄游和早期生活史等生物学特性,探讨了近年来刀鲚自然种群恢复、保护的技术方法和政策法规的研究进展,为今后科学利用、管理与保护刀鲚资源提供参考.

As an economically important target species, fish catch and germplasm resource of a- nadromous Coilia nasus remained declining since 1990s. In order to realize the scientific manage- ment and sustainable utilization, the annual catch variation of Coilia nasus in Yangtze River estu- ary since 1970s was summarized in this paper. The causes of the decline such as over fishing, habitat destruction, water pollution and damage of early development stage individuals were analyzed. Meanwhile, combining with spawning migration and early life history, research progress on technical method, policies and regulations about population restoration and protection of Coilia nasus were discussed.